refactor(dsp): improve reverb algorithm and update audio presets

- Enable edge-to-edge display in `MainActivity` and handle window insets in `PlayerFragment`.
- Add a fade-out animation when hiding the loading overlay.
- Sync player state with the controller during setup and reset playing state in preferences on service destruction.
- Simplify splash screen drawable and update background color attributes in layout.
- Remove manual navigation bar color overrides.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,38 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+1. Go to '...'
+2. Click on '....'
+3. Scroll down to '....'
+4. See error
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Desktop (please complete the following information):**
+ - OS: [e.g. iOS]
+ - Browser [e.g. chrome, safari]
+ - Version [e.g. 22]
+
+**Smartphone (please complete the following information):**
+ - Device: [e.g. iPhone6]
+ - OS: [e.g. iOS8.1]
+ - Browser [e.g. stock browser, safari]
+ - Version [e.g. 22]
+
+**Additional context**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/workflows/gradle-publish.yml

@@ -0,0 +1,76 @@
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
+name: Build and publish APK
+on:
+  workflow_dispatch:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+    
+
+env:
+  ANDROID_HOME: /usr/local/lib/android/sdk/
+  APK_PATH: app/build/outputs/apk/release/Radio.apk
+  APKSIGNER: /usr/local/lib/android/sdk/build-tools/34.0.0/apksigner
+  ZIPALIGN: /usr/local/lib/android/sdk/build-tools/34.0.0/zipalign
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v6
+
+      - name: Setup JDK
+        uses: actions/setup-java@v5
+        with:
+          java-version: 17
+          distribution: adopt
+          cache: gradle
+
+      - name: Cache Android SDK
+        #id: cache-android-sdk
+        uses: actions/cache@v5
+        with:
+          path: ${{ env.ANDROID_HOME }}
+          key: ${{ runner.os }}-android-sdk
+
+      - name: Setup Android SDK
+        ## It is not necessary to check for cache hit as it
+        ## will not download Android SDK again
+        #if: steps.cache-android-sdk.outputs.cache-hit != 'true'
+        uses: android-actions/setup-android@v4
+        with:
+          packages: 'ndk;29.0.14206865'
+
+      - name: Grant execute permission for gradlew
+        run: chmod +x ./gradlew
+
+      - name: Build unsigned APK
+        run: ./gradlew --no-daemon assembleRelease
+
+      - name: Check APK path
+        run: ls -R app/build/outputs/apk
+
+      - name: Zipalign APK
+        run: |
+          ${{ env.ZIPALIGN }} -v -p 4 ${{ env.APK_PATH }} app-release-aligned.apk
+
+      - name: Sign APK
+        env:
+          SIGN_CERT: ${{ secrets.SIGN_CERT }}
+          SIGN_KEY: ${{ secrets.SIGN_KEY }}
+        run: |
+          echo "$SIGN_CERT" | base64 -d > cert.der
+          echo "$SIGN_KEY" | base64 -d > key.der
+          ${{ env.APKSIGNER }} sign --key key.der --cert cert.der app-release-aligned.apk
+          rm cert.der key.der
+          mv app-release-aligned.apk app-release.apk
+
+      - name: Upload artifact
+        uses: actions/upload-artifact@v7
+        with:
+          name: app-release
+          path: app-release.apk

.gitignore

@@ -4,4 +4,7 @@
 /local.properties
 /.idea
 /build
-/captures
+/captures
+/gradle/gradle-daemon-jvm.properties
+/.kotlin
+/app/.cxx/

.vscode/c_cpp_properties.json

@@ -0,0 +1,16 @@
+{
+    "configurations": [
+        {
+            "name": "Android",
+            "includePath": [
+                "${workspaceFolder}/**"
+            ],
+            "defines": [
+                "_DEBUG",
+                "UNICODE",
+                "_UNICODE"
+            ]
+        }
+    ],
+    "version": 4
+}

.vscode/settings.json

@@ -0,0 +1,3 @@
+{
+    "C_Cpp.default.compilerPath": ""
+}

LICENSE.md

@@ -1,23 +1,678 @@
-The MIT License (MIT)
+GNU GENERAL PUBLIC LICENSE
+Version 3, 29 June 2007
 =====================
 
-Copyright (c) 2025 - Michatec
+ Copyright (C) 2007 Free Software Foundation, Inc. <https://fsf.org/>
+
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+of this license document, but changing it is not allowed.
+
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+sale, or importing the Program or any portion of it.
+
+  11. Patents.
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+work thus licensed is called the contributor's "contributor version".
+
+  A contributor's "essential patent claims" are all patent claims
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+  If you convey a covered work, knowingly relying on a patent license,
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+then you must either (1) cause the Corresponding Source to be so
+available, or (2) arrange to deprive yourself of the benefit of the
+patent license for this particular work, or (3) arrange, in a manner
+consistent with the requirements of this License, to extend the patent
+license to downstream recipients.  "Knowingly relying" means you have
+actual knowledge that, but for the patent license, your conveying the
+covered work in a country, or your recipient's use of the covered work
+in a country, would infringe one or more identifiable patents in that
+country that you have reason to believe are valid.
+
+  If, pursuant to or in connection with a single transaction or
+arrangement, you convey, or propagate by procuring conveyance of, a
+covered work, and grant a patent license to some of the parties
+receiving the covered work authorizing them to use, propagate, modify
+or convey a specific copy of the covered work, then the patent license
+you grant is automatically extended to all recipients of the covered
+work and works based on it.
+
+  A patent license is "discriminatory" if it does not include within
+the scope of its coverage, prohibits the exercise of, or is
+conditioned on the non-exercise of one or more of the rights that are
+specifically granted under this License.  You may not convey a covered
+work if you are a party to an arrangement with a third party that is
+in the business of distributing software, under which you make payment
+to the third party based on the extent of your activity of conveying
+the work, and under which the third party grants, to any of the
+parties who would receive the covered work from you, a discriminatory
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+conveyed by you (or copies made from those copies), or (b) primarily
+for and in connection with specific products or compilations that
+contain the covered work, unless you entered into that arrangement,
+or that patent license was granted, prior to 28 March 2007.
+
+  Nothing in this License shall be construed as excluding or limiting
+any implied license or other defenses to infringement that may
+otherwise be available to you under applicable patent law.
+
+  12. No Surrender of Others' Freedom.
+
+  If conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot convey a
+covered work so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you may
+not convey it at all.  For example, if you agree to terms that obligate you
+to collect a royalty for further conveying from those to whom you convey
+the Program, the only way you could satisfy both those terms and this
+License would be to refrain entirely from conveying the Program.
+
+  13. Use with the GNU Affero General Public License.
+
+  Notwithstanding any other provision of this License, you have
+permission to link or combine any covered work with a work licensed
+under version 3 of the GNU Affero General Public License into a single
+combined work, and to convey the resulting work.  The terms of this
+License will continue to apply to the part which is the covered work,
+but the special requirements of the GNU Affero General Public License,
+section 13, concerning interaction through a network will apply to the
+combination as such.
+
+  14. Revised Versions of this License.
+
+  The Free Software Foundation may publish revised and/or new versions of
+the GNU General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+  Each version is given a distinguishing version number.  If the
+Program specifies that a certain numbered version of the GNU General
+Public License "or any later version" applies to it, you have the
+option of following the terms and conditions either of that numbered
+version or of any later version published by the Free Software
+Foundation.  If the Program does not specify a version number of the
+GNU General Public License, you may choose any version ever published
+by the Free Software Foundation.
+
+  If the Program specifies that a proxy can decide which future
+versions of the GNU General Public License can be used, that proxy's
+public statement of acceptance of a version permanently authorizes you
+to choose that version for the Program.
+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
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+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.

README.md

@@ -1,19 +1,39 @@
+<p align="center">
+	<a href="https://github.com/michatec/Radio/releases"><img src="https://img.shields.io/github/v/release/michatec/Radio?style=flat-square&include_prereleases&label=version" /></a>
+	<a href="https://github.com/michatec/Radio/releases"><img src="https://img.shields.io/github/downloads/michatec/Radio/total.svg?style=flat-square" /></a>
+	<a href="https://github.com/michatec/Radio/issues"><img src="https://img.shields.io/github/issues-raw/michatec/Radio.svg?style=flat-square&label=issues" /></a>
+	<a href="https://github.com/michatec/Radio/graphs/contributors"><img src="https://img.shields.io/github/contributors/michatec/Radio?style=flat-square" /></a>
+</p>
 <div align="center">
 
 ### ℹ️ About Radio
 **Radio is an application with a minimalist approach to listening to radio over the Internet.** <br>
 **Radio only offers a very basic search option, and it imports audio streaming links when you tap them in a web browser.** <br>
+**Radio now also supports Android TV (Beta) and Cast to Devices (Beta).** <br>
 **Pull request are welcome at any time.**<br>
 
-**Radio is free software. It is released under the [MIT open source license](https://opensource.org/licenses/MIT).**
+**Radio is free software. It is released under the [GPLv3 open source license](https://opensource.org/licenses/GPL-3.0).**
 </div>
 
 ----------------------------------------
 
+<details>
+<summary>❗Warning</summary>
+<br>
+<p>
+Google has announced that, starting in 2026/2027, all apps on certified Android devices will require the developer to submit personal identity details directly to Google.
+
+Since the developers of this app do not agree to this requirement, this app will no longer work on certified Android devices after that time.
+</p>
+<a href="https://github.com/woheller69/FreeDroidWarn">ℹ️ More Information</a>
+</details>
+
+----------------------------------------
+
 <details>
 <summary>⚙️ Install Radio</summary>
 <br>
-<a href="https://github.com/michatec/Radio/releases/latest"><img src="https://user-images.githubusercontent.com/15986930/229208526-e5a63be5-0d0b-48ab-a222-9f2f2faf0ee4.png" height="80px"></a>
+<a href="https://github.com/michatec/Radio/releases/latest"><img src="https://user-images.githubusercontent.com/15986930/229208526-e5a63be5-0d0b-48ab-a222-9f2f2faf0ee4.png" alt="Preview" height="80px"></a>
 </details>
 
 ----------------------------------------
@@ -57,10 +77,32 @@ You can help out the radio-browser.info community by [adding the missing station
 
 ----------------------------------------
 
+<details>
+<summary>📺 Android TV Controls</summary>
+<br>
+
+When **Edit Stations** is enabled:
+- Press **← (Left)** on the remote to open the detailed station editing area
+- Press **3** or **Back** to close the editing area
+
+**General TV** Controls:
+- Press **0** or **DEL** to remove the selected radio station
+- Press **1** or **SPACE** to make the selected radio station favourite
+- Press **2** or **PLUS** to reorder the selected radio station
+
+</details>
+
+----------------------------------------
+
 <details>
 <summary>📜️ Credit</summary>
 
-Base app Michatec.
+- [Radio Browser](http://www.radio-browser.info/) for providing the radio station database
+- [AndroidX Leanback](https://developer.android.com/jetpack/androidx/releases/leanback) for providing the Android TV UI components
+
+- Michatec for developing the app and maintaining the project
+- All the contributors who have contributed to the project by submitting pull requests, reporting issues, or providing feedback
+
 </details>
 
 <div align="right">

app/build.gradle

@@ -1,19 +1,32 @@
-apply plugin: 'com.android.application'
-apply plugin: 'kotlin-android'
-apply plugin: 'kotlin-parcelize'
+plugins {
+    alias libs.plugins.android.application
+    id 'kotlin-parcelize'
+}
+
+androidComponents {
+    onVariants(selector().all()) { variant ->
+        variant.outputs.forEach { output ->
+            output.outputFileName.set("Radio.apk")
+        }
+    }
+}
 
 android {
     namespace 'com.michatec.radio'
-    compileSdk 34
+    compileSdk 36
 
     defaultConfig {
         applicationId 'com.michatec.radio'
-        minSdk 23
-        targetSdk 34
-        versionCode 128
-        versionName '12.8'
-        resourceConfigurations += ['en', 'de', 'el', 'nl', 'pl', 'ru','uk']
-        setProperty('archivesBaseName', 'Radio_' + versionName)
+        minSdk 28
+        targetSdk 36
+        versionCode 145
+        versionName '14.5'
+        resourceConfigurations += ['en', 'de', 'el', 'nl', 'pl', 'ru','uk', 'ja', 'da', 'fr']
+        externalNativeBuild {
+            cmake {
+                cppFlags ''
+            }
+        }
     }
 
     compileOptions {
@@ -41,28 +54,42 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+    ndkVersion "29.0.14206865"
+    externalNativeBuild {
+        cmake {
+            path file('src/main/cpp/CMakeLists.txt')
+            version '3.22.1'
+        }
+    }
 }
 
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
     // Google Stuff //
-    implementation 'com.google.android.material:material:1.10.0'
-    implementation 'com.google.code.gson:gson:2.10.1'
+    implementation libs.material
+    implementation libs.gson
+    implementation libs.play.services.cast.framework
 
     // AndroidX Stuff //
-    implementation 'androidx.activity:activity-ktx:1.8.1'
-    implementation 'androidx.palette:palette-ktx:1.0.0'
-    implementation 'androidx.preference:preference-ktx:1.2.1'
-    implementation 'androidx.media:media:1.7.0'
-    implementation 'androidx.media3:media3-exoplayer:1.2.0'
-    implementation 'androidx.media3:media3-exoplayer-hls:1.2.0'
-    implementation 'androidx.media3:media3-session:1.2.0'
-    implementation 'androidx.media3:media3-datasource-okhttp:1.2.0'
-    implementation 'androidx.navigation:navigation-fragment-ktx:2.7.5'
-    implementation 'androidx.navigation:navigation-ui-ktx:2.7.5'
-    implementation 'androidx.work:work-runtime-ktx:2.9.0'
+    implementation libs.core.ktx
+    implementation libs.activity.ktx
+    implementation libs.palette.ktx
+    implementation libs.preference.ktx
+    implementation libs.media
+    implementation libs.media3.exoplayer
+    implementation libs.media3.exoplayer.hls
+    implementation libs.media3.session
+    implementation libs.media3.cast
+    implementation libs.media3.datasource.okhttp
+    implementation libs.navigation.fragment.ktx
+    implementation libs.navigation.ui.ktx
+    implementation libs.work.runtime.ktx
+    implementation libs.leanback
 
+    implementation libs.freedroidwarn
+	
     // Volley HTTP request //
-    implementation 'com.android.volley:volley:1.2.1'
+    implementation libs.volley
+    implementation libs.material3
 }

app/src/main/AndroidManifest.xml

@@ -1,6 +1,13 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-feature
+        android:name="android.software.leanback"
+        android:required="false" />
+    <uses-feature
+        android:name="android.hardware.touchscreen"
+        android:required="false" />
+
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
@@ -10,6 +17,7 @@
     <application
         android:name=".Radio"
         android:allowBackup="true"
+        android:banner="@mipmap/ic_launcher"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"
@@ -21,10 +29,9 @@
         android:supportsRtl="true"
         android:theme="@style/AppTheme"
         android:usesCleartextTraffic="true"
-        tools:targetApi="tiramisu">
+        tools:targetApi="33">
 
         <!-- ANDROID AUTO SUPPORT -->
-        <!--  https://developer.android.com/training/auto/audio/ -->
         <meta-data
             android:name="com.google.android.gms.car.application"
             android:resource="@xml/automotive_app_desc" />
@@ -32,56 +39,60 @@
             android:name="com.google.android.gms.car.notification.SmallIcon"
             android:resource="@mipmap/ic_launcher" />
 
-        <!-- Main activity for radio station playback on phone -->
+        <!-- GOOGLE CAST SUPPORT -->
+        <receiver android:name="androidx.mediarouter.media.MediaTransferReceiver" />
+        <meta-data
+            android:name="com.google.android.gms.cast.framework.OPTIONS_PROVIDER_CLASS_NAME"
+            android:value="com.michatec.radio.CastOptionsProvider" />
+
+        <activity
+            android:name=".ExpandedControllerActivity"
+            android:exported="false"
+            android:launchMode="singleTask" />
+
+        <!-- Main activity for radio station playback on phone and TV -->
         <activity
             android:name=".MainActivity"
             android:configChanges="orientation|screenSize"
             android:windowSoftInputMode="adjustPan"
+            android:theme="@style/SplashTheme"
             android:exported="true">
 
-            <!-- react to main intents -->
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
                 <category android:name="android.intent.category.LAUNCHER" />
+                <category android:name="android.intent.category.LEANBACK_LAUNCHER" />
             </intent-filter>
 
-            <!-- react to be recognized as a music player -->
             <intent-filter>
                 <action android:name="android.intent.action.MUSIC_PLAYER" />
                 <category android:name="android.intent.category.CATEGORY_APP_MUSIC" />
             </intent-filter>
 
-            <!-- react to voice searches, like "Play Security Now" -->
             <intent-filter>
                 <action android:name="android.media.action.MEDIA_PLAY_FROM_SEARCH" />
                 <category android:name="android.intent.category.DEFAULT" />
             </intent-filter>
 
-            <!-- react to playlist-links based on file extension -->
-            <intent-filter>
+            <intent-filter android:autoVerify="true">
                 <action android:name="android.intent.action.VIEW" />
-
                 <category android:name="android.intent.category.BROWSABLE" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="http" />
                 <data android:scheme="https" />
-                <data android:host="*" />
+                <data android:host="*" tools:ignore="AppLinkUrlError" />
                 <data android:pathPattern=".*\\.m3u" />
                 <data android:pathPattern=".*\\.m3u8" />
                 <data android:pathPattern=".*\\.pls" />
             </intent-filter>
 
-            <!-- react to playlist-links based on mimetype -->
-            <intent-filter>
+            <intent-filter android:autoVerify="false">
                 <action android:name="android.intent.action.VIEW" />
-
                 <category android:name="android.intent.category.BROWSABLE" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="http" />
                 <data android:scheme="https" />
-                <data android:host="*" />
+                <data android:host="*" tools:ignore="AppLinkUrlError" />
                 <data android:mimeType="audio/x-scpls" />
                 <data android:mimeType="audio/mpegurl" />
                 <data android:mimeType="audio/x-mpegurl" />
@@ -92,11 +103,9 @@
                 <data android:mimeType="application/octet-stream" />
             </intent-filter>
 
-            <!-- react to hls playlist-links based on mimetype -->
             <intent-filter>
                 <action android:name="android.intent.action.VIEW" />
                 <category android:name="android.intent.category.DEFAULT" />
-
                 <data android:scheme="content" />
                 <data android:host="*" />
                 <data android:mimeType="audio/x-scpls" />
@@ -108,20 +117,16 @@
                 <data android:mimeType="application/vnd.apple.mpegurl.audio" />
             </intent-filter>
 
-            <!-- react to "start player service" intents -->
             <intent-filter>
                 <action android:name="com.michatec.radio.action.START_PLAYER_SERVICE" />
             </intent-filter>
 
-            <!-- App Shortcuts -->
             <meta-data
                 android:name="android.app.shortcuts"
                 android:resource="@xml/shortcuts" />
 
         </activity>
 
-
-        <!-- Player Service -->
         <service
             android:name=".PlayerService"
             android:enabled="true"
@@ -135,8 +140,6 @@
             </intent-filter>
         </service>
 
-
-        <!-- handles completed downloads -->
         <receiver
             android:name=".helpers.DownloadFinishedReceiver"
             android:exported="true">
@@ -145,8 +148,6 @@
             </intent-filter>
         </receiver>
 
-
-        <!-- handles media buttons -->
         <receiver
             android:name="androidx.media.session.MediaButtonReceiver"
             android:exported="true">
@@ -155,8 +156,6 @@
             </intent-filter>
         </receiver>
 
-
-        <!-- file provider -->
         <provider
             android:name="androidx.core.content.FileProvider"
             android:authorities="${applicationId}.provider"

app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,42 @@
+
+# For more information about using CMake with Android Studio, read the
+# documentation: https://d.android.com/studio/projects/add-native-code.html.
+# For more examples on how to use CMake, see https://github.com/android/ndk-samples.
+
+# Sets the minimum CMake version required for this project.
+cmake_minimum_required(VERSION 3.22.1)
+
+# Declares the project name. The project name can be accessed via ${ PROJECT_NAME},
+# Since this is the top level CMakeLists.txt, the project name is also accessible
+# with ${CMAKE_PROJECT_NAME} (both CMake variables are in-sync within the top level
+# build script scope).
+project("radio")
+
+# Creates and names a library, sets it as either STATIC
+# or SHARED, and provides the relative paths to its source code.
+# You can define multiple libraries, and CMake builds them for you.
+# Gradle automatically packages shared libraries with your APK.
+#
+# In this top level CMakeLists.txt, ${CMAKE_PROJECT_NAME} is used to define
+# the target library name; in the sub-module's CMakeLists.txt, the project name
+# is preferred for the same purpose.
+#
+# In order to load a library into your app from Java/Kotlin, you must call
+# System.loadLibrary() and pass the name of the library defined here;
+# for GameActivity/NativeActivity derived applications, the same library name must be
+# used in the AndroidManifest.xml file.
+add_library(dsp SHARED
+    dsp.cpp)
+
+add_library(extra SHARED
+    extra.cpp)
+
+# Specifies libraries CMake should link to your target library. You
+# can link libraries from various origins, such as libraries defined in this
+# build script, prebuilt third-party libraries, or Android system libraries.
+target_link_libraries(dsp
+    android
+    log)
+target_link_libraries(extra
+    android
+    log)

app/src/main/cpp/dsp.cpp

@@ -0,0 +1,479 @@
+#include <jni.h>
+#include <vector>
+#include <cmath>
+#include <complex>
+#include <array>
+#include <atomic>
+
+#if defined(__ARM_NEON)
+#include <arm_neon.h>
+#endif
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+static std::atomic<float> gSampleRate(44100.0f);
+static constexpr int FFT_SIZE = 2048;
+static constexpr int NUM_EQ_BANDS = 10;
+static constexpr float INV_32768 = 1.0f / 32768.0f;
+static constexpr float SQRT_2_INV = 0.70710678f;
+static constexpr float DENORMAL_OFFSET = 1e-18f;
+static constexpr float INTERPOLATION_SPEED = 0.1f;
+
+static constexpr std::array<float, NUM_EQ_BANDS> EQ_FREQUENCIES = {
+        31.25f, 62.5f, 125.0f, 250.0f, 500.0f,
+        1000.0f, 2000.0f, 4000.0f, 8000.0f, 16000.0f
+};
+
+struct alignas(16) EqBandInterpolator {
+    std::atomic<float> targetGain{0.0f};
+    std::atomic<float> currentGain{0.0f};
+    float a0 = 1.0f, a1 = 0.0f, a2 = 0.0f, b1 = 0.0f, b2 = 0.0f;
+    float z1 = 0.0f, z2 = 0.0f;
+    bool active = false;
+
+    inline void setTargetGain(float g) { targetGain.store(g, std::memory_order_release); }
+    
+    inline void updateInterpolation() {
+        float target = targetGain.load(std::memory_order_acquire);
+        float current = currentGain.load(std::memory_order_relaxed);
+        float diff = target - current;
+        if (std::abs(diff) > 0.001f) {
+            currentGain.store(current + diff * INTERPOLATION_SPEED, std::memory_order_release);
+        }
+    }
+    
+    inline float process(float x) {
+        if (!active) return x;
+        updateInterpolation();
+        float g = currentGain.load(std::memory_order_acquire);
+        if (std::abs(g) < 0.01f) return x;
+        float y = x * a0 + z1;
+        z1 = x * a1 + z2 - b1 * y + DENORMAL_OFFSET;
+        z2 = x * a2 - b2 * y;
+        return y;
+    }
+    
+    inline void setCoefficients(float sr, float f, float g, float bw) {
+        const bool isActive = std::abs(g) > 0.1f;
+        active = isActive;
+        if (!isActive) return;
+        const float A = powf(10.0f, g / 40.0f);
+        const float w = 2.0f * static_cast<float>(M_PI) * f / sr;
+        const float alpha = sinf(w) * sinhf(logf(2.0f) / 2.0f * bw * w / sinf(w));
+        const float c = cosf(w);
+        const float a0_raw = 1.0f + alpha / A;
+        const float invA0 = 1.0f / a0_raw;
+        a0 = (1.0f + alpha * A) * invA0;
+        a1 = (-2.0f * c) * invA0;
+        a2 = (1.0f - alpha * A) * invA0;
+        b1 = (-2.0f * c) * invA0;
+        b2 = (1.0f - alpha / A) * invA0;
+    }
+};
+
+struct alignas(16) BassFilter {
+    alignas(16) float a0 = 1.2f, a1 = 1.2f, a2 = 1.2f, b1 = 0.0f, b2 = 0.0f;
+    alignas(16) float z1 = 0.0f, z2 = 0.0f;
+    std::atomic<bool> active{false};
+    std::atomic<float> targetGain{0.0f};
+    std::atomic<float> currentGain{0.0f};
+
+    inline void updateInterpolation() {
+        float target = targetGain.load(std::memory_order_acquire);
+        float current = currentGain.load(std::memory_order_relaxed);
+        float diff = target - current;
+        if (std::abs(diff) > 0.001f) {
+            currentGain.store(current + diff * INTERPOLATION_SPEED, std::memory_order_release);
+        }
+    }
+
+    inline float process(float x) {
+        if (!active.load(std::memory_order_acquire)) return x;
+        updateInterpolation();
+        float g = currentGain.load(std::memory_order_acquire);
+        if (std::abs(g) < 0.01f) return x;
+        float y = x * a0 + z1;
+        z1 = x * a1 + z2 - b1 * y + DENORMAL_OFFSET;
+        z2 = x * a2 - b2 * y;
+        if(y > 1.2f) y = 1.2f; else if(y < -1.2f) y = -1.2f;
+        return y;
+    }
+
+    void setCoefficients(float sr, float f, float g, float q){
+        float A=powf(10.0f,g/40.0f);
+        float w=2.0f*static_cast<float>(M_PI)*f/sr;
+        float alpha=sinf(w)/2.0f*sqrtf((A+1.0f/A)*(1.0f/q-1.0f)+2.0f);
+        float c=cosf(w),sqrtA=sqrtf(A);
+        float a0_raw=(A+1.0f)+(A-1.0f)*c+2.0f*sqrtA*alpha;
+        float invA0=1.0f/a0_raw;
+        a0=A*((A+1.0f)-(A-1.0f)*c+2.0f*sqrtA*alpha)*invA0;
+        a1=2.0f*A*((A-1.0f)-(A+1.0f)*c)*invA0;
+        a2=A*((A+1.0f)-(A-1.0f)*c-2.0f*sqrtA*alpha)*invA0;
+        b1=-2.0f*((A-1.0f)+(A+1.0f)*c)*invA0;
+        b2=((A+1.0f)+(A-1.0f)*c-2.0f*sqrtA*alpha)*invA0;
+    }
+    
+    void applyGain(float sr) {
+        float g = currentGain.load(std::memory_order_acquire);
+        setCoefficients(sr, 150.0f, g, SQRT_2_INV);
+    }
+};
+
+class ReverbOptimized {
+    struct DelayLine {
+        float buffer[48000]{};
+        int size = 48000;
+        int pos = 0;
+
+        inline float read(float delaySamples) {
+            float readPos = static_cast<float>(pos) - delaySamples;
+            if (readPos < 0.0f) readPos += static_cast<float>(size);
+
+            int i1 = static_cast<int>(readPos);
+            int i2 = (i1 + 1) % size;
+            float frac = readPos - static_cast<float>(i1);
+
+            return buffer[i1] * (1.0f - frac) + buffer[i2] * frac;
+        }
+
+        inline void write(float x) {
+            buffer[pos] = x;
+            pos++;
+            if (pos >= size) pos = 0;
+        }
+    };
+
+    DelayLine delays[8];
+
+    float feedback[8] = {
+            0.78f, 0.80f, 0.82f, 0.84f,
+            0.76f, 0.79f, 0.81f, 0.83f
+    };
+
+    float baseDelay[8] = {
+            1423.0f, 1557.0f, 1617.0f, 1789.0f,
+            1867.0f, 1999.0f, 2137.0f, 2251.0f
+    };
+
+    float modPhase[8] = {};
+    float modSpeed[8] = {
+            0.10f, 0.12f, 0.09f, 0.11f,
+            0.13f, 0.08f, 0.14f, 0.07f
+    };
+
+public:
+    std::atomic<float> mix{0.0f};
+
+    inline float processSample(float x) {
+        float m = mix.load(std::memory_order_relaxed);
+        if (m < 0.01f) return x;
+        float out = 0.0f;
+
+#pragma GCC unroll 8
+        for (int i = 0; i < 8; i++) {
+            modPhase[i] += modSpeed[i];
+            if (modPhase[i] > 2.0f * static_cast<float>(M_PI)) modPhase[i] -= 2.0f * static_cast<float>(M_PI);
+
+            float mod = sinf(modPhase[i]) * 5.0f;
+
+            float delayTime = baseDelay[i] + mod;
+
+            float delayed = delays[i].read(delayTime);
+
+            float input = x + delayed * feedback[i] + DENORMAL_OFFSET;
+
+            delays[i].write(input);
+
+            out += delayed;
+        }
+
+        return x * (1.0f - m) + (out * 0.125f) * m;
+    }
+
+    inline void processBlock(float* __restrict__ left, float* __restrict__ right, int count) {
+        float m = mix.load(std::memory_order_relaxed);
+        if (m < 0.01f) return;
+
+        for (int i = 0; i < count; i++) {
+            float l = processSample(left[i]);
+            float r = processSample(right[i]);
+
+            float wetL = l * 0.7f + r * 0.3f;
+            float wetR = r * 0.7f + l * 0.3f;
+
+            left[i] = wetL;
+            right[i] = wetR;
+        }
+    }
+};
+
+class CompressorOptimized {
+public:
+    std::atomic<float> threshold{0.3f}, ratio{4.0f}, attack{0.08f}, release{0.8f};
+    std::atomic<float> sampleRate{44100.0f};
+    std::atomic<bool> enabled{false};
+private:
+    float envelopeL = 0.0f, envelopeR = 0.0f;
+    float attackCoef = 0.0f, releaseCoef = 0.0f;
+public:
+    inline void updateCoefficients() {
+        float a = attack.load(std::memory_order_relaxed);
+        float r = release.load(std::memory_order_relaxed);
+        float sr = sampleRate.load(std::memory_order_relaxed);
+
+        attackCoef = expf(-1.0f / (a * sr));
+        releaseCoef = expf(-1.0f / (r * sr));
+    }
+    inline void processBlock(float* __restrict__ buffer, int count, float& envelope) {
+        updateCoefficients();
+        float th = threshold.load(std::memory_order_acquire);
+        float rt = ratio.load(std::memory_order_acquire);
+        for(int i=0; i<count; i++){
+            float absInput = fabsf(buffer[i]);
+            envelope = (absInput > envelope) ? attackCoef*envelope + (1.0f-attackCoef)*absInput : releaseCoef*envelope + (1.0f-releaseCoef)*absInput;
+            float gain = (envelope>th)? (th + (envelope-th)/rt)/(envelope+1e-9f) : 1.0f;
+            buffer[i]*=gain;
+        }
+    }
+    inline void process(float* __restrict__ left, float* __restrict__ right, int count) {
+        if (!enabled.load(std::memory_order_acquire)) return;
+        processBlock(left, count, envelopeL);
+        processBlock(right, count, envelopeR);
+    }
+};
+
+static std::atomic<bool> gEqEnabled{false};
+static std::atomic<float> gStereoWidth{1.0f};
+alignas(16) std::array<float, 4096> gLeftBuf, gRightBuf;
+alignas(16) std::array<float, 256> gFFTData;
+
+inline void fastFFT(std::complex<float>* __restrict__ data, int n) {
+    for (int i = 1, j = 0; i < n; i++) {
+        int bit = n >> 1;
+        for (; j & bit; bit >>= 1) j ^= bit;
+        j ^= bit;
+        if (i < j) std::swap(data[i], data[j]);
+    }
+    for (int len = 2; len <= n; len <<= 1) {
+        float ang = -2.0f * static_cast<float>(M_PI) / static_cast<float>(len);
+        std::complex<float> wlen(cosf(ang), sinf(ang));
+        for (int i = 0; i < n; i += len) {
+            std::complex<float> w(1.0f);
+            for (int j = 0; j < len / 2; j++) {
+                std::complex<float> u = data[i + j];
+                std::complex<float> v = data[i + j + len / 2] * w;
+                data[i + j] = u + v;
+                data[i + j + len / 2] = u - v;
+                w *= wlen;
+            }
+        }
+    }
+}
+
+inline void applyHannWindowToReal(std::complex<float>* __restrict__ data, int size) {
+    const auto fSizeMinus1 = static_cast<float>(size - 1);
+    for (int i = 0; i < size; i++) {
+        float window = 0.5f * (1.0f - cosf(2.0f * static_cast<float>(M_PI) * static_cast<float>(i) / fSizeMinus1));
+        data[i] = std::complex<float>(data[i].real() * window, data[i].imag());
+    }
+}
+
+inline float fastSoftClip(float x) {
+    float ax = fabsf(x);
+    float sign = x > 0.0f ? 1.0f : -1.0f;
+    if (ax > 1.0f) return sign;
+    return x * (1.5f - 0.5f * x * x);
+}
+
+static EqBandInterpolator gEqL[NUM_EQ_BANDS];
+static EqBandInterpolator gEqR[NUM_EQ_BANDS];
+static BassFilter gBassL, gBassR;
+static CompressorOptimized gCompressor;
+static ReverbOptimized gReverbL, gReverbR;
+static std::array<std::complex<float>, FFT_SIZE> gFFTWork;
+static int gEqUpdateCounter = 0;
+
+inline void updateAllEqBands() {
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    for (int b = 0; b < NUM_EQ_BANDS; b++) {
+        float g = gEqL[b].targetGain.load(std::memory_order_acquire);
+        gEqL[b].setCoefficients(sr, EQ_FREQUENCIES[static_cast<size_t>(b)], g, 1.0f);
+        gEqR[b].setCoefficients(sr, EQ_FREQUENCIES[static_cast<size_t>(b)], g, 1.0f);
+    }
+    bool anyActive = false;
+    for (auto const& band : gEqL) {
+        if (std::abs(band.targetGain.load(std::memory_order_acquire)) > 0.1f) {
+            anyActive = true;
+            break;
+        }
+    }
+    gEqEnabled.store(anyActive, std::memory_order_release);
+}
+
+extern "C" {
+
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setSampleRate(JNIEnv*, jobject, jfloat sr) {
+    gSampleRate.store(sr, std::memory_order_release);
+    gCompressor.sampleRate.store(sr, std::memory_order_release);
+    gBassL.applyGain(sr);
+    gBassR.applyGain(sr);
+    gEqUpdateCounter = 1;
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setDrcEnabled(JNIEnv*, jobject, jboolean e) {
+    gCompressor.enabled.store(e == JNI_TRUE, std::memory_order_release);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setReverbMix(JNIEnv*, jobject, jfloat m) {
+    gReverbL.mix.store(m, std::memory_order_release);
+    gReverbR.mix.store(m, std::memory_order_release);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setEqFull(JNIEnv* env, jobject thiz, jfloatArray gains) {
+    if (!gains) return;
+    
+    jsize len = env->GetArrayLength(gains);
+    int bandsToUpdate = std::min(static_cast<int>(len), NUM_EQ_BANDS);
+    
+    jfloat* gainsPtr = env->GetFloatArrayElements(gains, nullptr);
+    if (!gainsPtr) return;
+    
+    for (int b = 0; b < bandsToUpdate; b++) {
+        gEqL[b].setTargetGain(gainsPtr[b]);
+        gEqR[b].setTargetGain(gainsPtr[b]);
+    }
+    
+    gEqUpdateCounter = 1;
+    
+    env->ReleaseFloatArrayElements(gains, gainsPtr, JNI_ABORT);
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setBassBoost(JNIEnv*, jobject, jfloat g) {
+    float scaledGain = g * 4.0f;
+    gBassL.targetGain.store(scaledGain, std::memory_order_release);
+    gBassR.targetGain.store(scaledGain, std::memory_order_release);
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    gBassL.applyGain(sr);
+    gBassR.applyGain(sr);
+    if (std::abs(g) > 0.01f) {
+        gBassL.active.store(true, std::memory_order_release);
+        gBassR.active.store(true, std::memory_order_release);
+    } else {
+        gBassL.active.store(false, std::memory_order_release);
+        gBassR.active.store(false, std::memory_order_release);
+    }
+}
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_setStereoWidth(JNIEnv*, jobject, jfloat w) {
+    gStereoWidth.store(fmaxf(0.0f, fminf(w, 2.0f)), std::memory_order_release);
+}
+
+JNIEXPORT jfloatArray JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_getFftData(JNIEnv* env, jobject) {
+    jfloatArray arr = env->NewFloatArray(256);
+    env->SetFloatArrayRegion(arr, 0, 256, gFFTData.data());
+    return arr;
+}
+
+inline void computeLogarithmicFFT(float* output, const std::complex<float>* input, int inputSize) {
+    float sr = gSampleRate.load(std::memory_order_acquire);
+    float binWidth = sr / (2.0f * static_cast<float>(inputSize));
+    constexpr int NUM_BANDS = 256;
+    constexpr float MIN_FREQ = 20.0f;
+    constexpr float MAX_FREQ = 20000.0f;
+    float logMin = logf(MIN_FREQ);
+    float logMax = logf(MAX_FREQ);
+    float logRange = logMax - logMin;
+    
+    for (int b = 0; b < NUM_BANDS; b++) {
+        float f1 = expf(logMin + (logRange * static_cast<float>(b) / static_cast<float>(NUM_BANDS)));
+        float f2 = expf(logMin + (logRange * static_cast<float>(b + 1) / static_cast<float>(NUM_BANDS)));
+        int idx1 = static_cast<int>(f1 / binWidth);
+        int idx2 = static_cast<int>(f2 / binWidth);
+        idx1 = std::max(0, std::min(idx1, inputSize - 1));
+        idx2 = std::max(0, std::min(idx2, inputSize - 1));
+        
+        float sum = 0.0f;
+        int count = idx2 - idx1 + 1;
+        for (int i = idx1; i <= idx2 && i < inputSize; i++) {
+            sum += std::abs(input[i]);
+        }
+        float avg = (count > 0) ? sum / static_cast<float>(count) : 0.0f;
+        output[b] = avg * 0.5f;
+    }
+}
+
+JNIEXPORT void JNICALL Java_com_michatec_radio_helpers_NativeAudioProcessor_processAudioDirect(JNIEnv* env, jobject, jobject byteBuffer, jint size) {
+    auto* buffer = static_cast<jshort*>(env->GetDirectBufferAddress(byteBuffer));
+    if (!buffer) return;
+    int numFrames = (size / 2) / 2;
+    if (numFrames > 4096) numFrames = 4096;
+
+    if (gEqUpdateCounter > 0) {
+        updateAllEqBands();
+        gEqUpdateCounter--;
+    }
+
+    for (int i = 0; i < numFrames; i++) {
+        gLeftBuf[static_cast<size_t>(i)] = static_cast<float>(buffer[i * 2]) * INV_32768;
+        gRightBuf[static_cast<size_t>(i)] = static_cast<float>(buffer[i * 2 + 1]) * INV_32768;
+    }
+
+    bool eqEnabled = gEqEnabled.load(std::memory_order_relaxed);
+    if (eqEnabled) {
+        for (int i = 0; i < numFrames; i++) {
+            float xL = gLeftBuf[static_cast<size_t>(i)];
+            float xR = gRightBuf[static_cast<size_t>(i)];
+
+            for (int b = 0; b < NUM_EQ_BANDS; b++) {
+                float g = gEqL[b].currentGain.load(std::memory_order_relaxed);
+                if (std::abs(g) < 0.01f) continue;
+
+                xL = gEqL[b].process(xL);
+                xR = gEqR[b].process(xR);
+            }
+
+            gLeftBuf[static_cast<size_t>(i)] = xL;
+            gRightBuf[static_cast<size_t>(i)] = xR;
+        }
+    }
+
+    for(int i = 0; i < numFrames; i++) {
+        gLeftBuf[static_cast<size_t>(i)] = gBassL.process(gLeftBuf[static_cast<size_t>(i)]);
+        gRightBuf[static_cast<size_t>(i)] = gBassR.process(gRightBuf[static_cast<size_t>(i)]);
+    }
+
+    gReverbL.processBlock(gLeftBuf.data(), gRightBuf.data(), numFrames);
+
+    float stereoWidth = gStereoWidth.load(std::memory_order_relaxed);
+    if (stereoWidth != 1.0f) {
+        float halfWidth = stereoWidth * 0.5f;
+        for (int j = 0; j < numFrames; j++) {
+            float mid = (gLeftBuf[static_cast<size_t>(j)] + gRightBuf[static_cast<size_t>(j)]) * 0.5f;
+            float side = (gLeftBuf[static_cast<size_t>(j)] - gRightBuf[static_cast<size_t>(j)]) * halfWidth;
+            gLeftBuf[static_cast<size_t>(j)] = mid + side;
+            gRightBuf[static_cast<size_t>(j)] = mid - side;
+        }
+    }
+
+    gCompressor.process(gLeftBuf.data(), gRightBuf.data(), numFrames);
+
+    if (numFrames >= FFT_SIZE) {
+        for (int k = 0; k < FFT_SIZE; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(gLeftBuf[static_cast<size_t>(k)], 0.0f);
+        }
+    } else {
+        for (int k = 0; k < numFrames; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(gLeftBuf[static_cast<size_t>(k)], 0.0f);
+        }
+        for (int k = numFrames; k < FFT_SIZE; k++) {
+            gFFTWork[static_cast<size_t>(k)] = std::complex<float>(0.0f, 0.0f);
+        }
+    }
+    
+    applyHannWindowToReal(gFFTWork.data(), FFT_SIZE);
+    fastFFT(gFFTWork.data(), FFT_SIZE);
+    computeLogarithmicFFT(gFFTData.data(), gFFTWork.data(), FFT_SIZE / 2);
+
+    for (int k = 0; k < numFrames; k++) {
+        buffer[k * 2] = static_cast<jshort>(fastSoftClip(gLeftBuf[static_cast<size_t>(k)]) * 32767.0f);
+        buffer[k * 2 + 1] = static_cast<jshort>(fastSoftClip(gRightBuf[static_cast<size_t>(k)]) * 32767.0f);
+    }
+}
+}

app/src/main/cpp/extra.cpp

@@ -0,0 +1,86 @@
+#include <jni.h>
+#include <android/native_window_jni.h>
+#include <android/native_window.h>
+#include <android/log.h>
+#include <vector>
+#include <algorithm>
+#include <cmath>
+
+extern "C" {
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_ExtrasHelper_visualize(JNIEnv *env, jclass clazz, jobject surface, jfloatArray data) {
+    if (!surface) return;
+    ANativeWindow* window = ANativeWindow_fromSurface(env, surface);
+    if (!window) return;
+
+    jsize len = env->GetArrayLength(data);
+    if (len == 0) {
+        ANativeWindow_release(window);
+        return;
+    }
+    jfloat* body = env->GetFloatArrayElements(data, nullptr);
+
+    ANativeWindow_Buffer buffer;
+    ANativeWindow_setBuffersGeometry(window, 0, 0, WINDOW_FORMAT_RGBA_8888);
+
+    if (ANativeWindow_lock(window, &buffer, nullptr) == 0) {
+        auto* pixels = static_cast<uint32_t*>(buffer.bits);
+
+        // Clear background (Dark Grey)
+        for (int y = 0; y < buffer.height; y++) {
+            uint32_t* row = pixels + (y * buffer.stride);
+            for (int x = 0; x < buffer.width; x++) {
+                row[x] = 0xFF121212;
+            }
+        }
+
+        // Draw bars - fewer bins = thicker bars
+        int displayBins = 40;
+        float barWidth = static_cast<float>(buffer.width) / static_cast<float>(displayBins);
+        int padding = static_cast<int>(barWidth * 0.2f);
+        if (padding < 1) padding = 1;
+
+        for (int i = 0; i < displayBins; i++) {
+            // Map display bin to data index
+            int dataIdx = (i * len) / displayBins;
+            float val = body[dataIdx];
+
+            // Use square root to compress the range (so peaks don't hit the top too easily)
+            // and a lower multiplier (0.4f) to reduce overall height
+            float scaledVal = sqrtf(val) * 0.5f;
+            int barHeight = static_cast<int>(scaledVal * static_cast<float>(buffer.height));
+
+            // Cap height at 75% to leave some room at the top
+            int maxH = static_cast<int>(static_cast<float>(buffer.height) * 0.75f);
+            if (barHeight > maxH) barHeight = maxH;
+            if (barHeight < 4) barHeight = 4; // Minimal visible line
+
+            int startX = static_cast<int>(static_cast<float>(i) * barWidth);
+            int endX = static_cast<int>(static_cast<float>(i + 1) * barWidth);
+
+            int drawStartX = startX + padding;
+            int drawEndX = endX - padding;
+            if (drawEndX <= drawStartX) drawEndX = drawStartX + 1;
+
+            int barBottom = buffer.height - 4; // Bottom margin
+            int barTop = barBottom - barHeight;
+
+            for (int x = drawStartX; x < drawEndX; x++) {
+                if (x < 0 || x >= buffer.width) continue;
+                for (int y = barTop; y < barBottom; y++) {
+                    if (y < 0 || y >= buffer.height) continue;
+                    // Using the same color, but now height is controlled
+                    pixels[y * buffer.stride + x] = 0xFFC5DA03;
+                }
+            }
+        }
+
+        ANativeWindow_unlockAndPost(window);
+    }
+
+    env->ReleaseFloatArrayElements(data, body, JNI_ABORT);
+    ANativeWindow_release(window);
+}
+
+} // extern "C"

app/src/main/java/com/michatec/radio/AddStationFragment.kt

@@ -0,0 +1,214 @@
+package com.michatec.radio
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.os.Bundle
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.inputmethod.InputMethodManager
+import android.widget.Button
+import android.widget.EditText
+import android.widget.ProgressBar
+import androidx.appcompat.widget.SearchView
+import androidx.core.view.isGone
+import androidx.core.view.isVisible
+import androidx.fragment.app.Fragment
+import androidx.lifecycle.ViewModelProvider
+import androidx.navigation.fragment.findNavController
+import androidx.recyclerview.widget.DefaultItemAnimator
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.google.android.material.textview.MaterialTextView
+import com.michatec.radio.collection.CollectionViewModel
+import com.michatec.radio.core.Station
+import com.michatec.radio.helpers.CollectionHelper
+import com.michatec.radio.helpers.NetworkHelper
+import com.michatec.radio.search.DirectInputCheck
+import com.michatec.radio.search.RadioBrowserResult
+import com.michatec.radio.search.RadioBrowserSearch
+import com.michatec.radio.search.SearchResultAdapter
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.Dispatchers.IO
+import kotlinx.coroutines.Dispatchers.Main
+import kotlinx.coroutines.launch
+import kotlinx.coroutines.withContext
+
+class AddStationFragment : Fragment(),
+    SearchResultAdapter.SearchResultAdapterListener,
+    RadioBrowserSearch.RadioBrowserSearchListener,
+    DirectInputCheck.DirectInputCheckListener {
+
+    private lateinit var collectionViewModel: CollectionViewModel
+    private lateinit var stationSearchBoxView: SearchView
+    private lateinit var searchRequestProgressIndicator: ProgressBar
+    private lateinit var noSearchResultsTextView: MaterialTextView
+    private lateinit var stationSearchResultList: RecyclerView
+    private lateinit var positiveButton: Button
+    private lateinit var negativeButton: Button
+    private lateinit var searchResultAdapter: SearchResultAdapter
+    private lateinit var radioBrowserSearch: RadioBrowserSearch
+    private lateinit var directInputCheck: DirectInputCheck
+    private var station: Station = Station()
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        // We reuse the dialog layout as it's already optimized for TV in layout-television
+        val view = inflater.inflate(R.layout.dialog_find_station, container, false)
+        
+        collectionViewModel = ViewModelProvider(requireActivity())[CollectionViewModel::class.java]
+        radioBrowserSearch = RadioBrowserSearch(this)
+        directInputCheck = DirectInputCheck(this)
+
+        stationSearchBoxView = view.findViewById(R.id.station_search_box_view)
+        searchRequestProgressIndicator = view.findViewById(R.id.search_request_progress_indicator)
+        stationSearchResultList = view.findViewById(R.id.station_search_result_list)
+        noSearchResultsTextView = view.findViewById(R.id.no_results_text_view)
+        positiveButton = view.findViewById(R.id.dialog_positive_button)
+        negativeButton = view.findViewById(R.id.dialog_negative_button)
+
+        setupRecyclerView()
+        setupSearchView()
+
+        positiveButton.setOnClickListener {
+            addStationAndExit()
+        }
+
+        negativeButton.setOnClickListener {
+            searchResultAdapter.stopPrePlayback()
+            findNavController().navigateUp()
+        }
+
+        stationSearchBoxView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
+            override fun onQueryTextChange(query: String): Boolean {
+                handleSearch(query)
+                return true
+            }
+            override fun onQueryTextSubmit(query: String): Boolean {
+                handleSearch(query)
+                return true
+            }
+        })
+
+        return view
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        // Stop playback when fragment is destroyed (e.g. via back button)
+        if (this::searchResultAdapter.isInitialized) {
+            searchResultAdapter.stopPrePlayback()
+        }
+    }
+
+    private fun setupRecyclerView() {
+        searchResultAdapter = SearchResultAdapter(this, listOf())
+        stationSearchResultList.adapter = searchResultAdapter
+        stationSearchResultList.layoutManager = LinearLayoutManager(context)
+        stationSearchResultList.itemAnimator = DefaultItemAnimator()
+    }
+
+    private fun setupSearchView() {
+        // TV specific: ensure keyboard opens when search view gets focus
+        stationSearchBoxView.setOnQueryTextFocusChangeListener { v, hasFocus ->
+            if (hasFocus) {
+                // Find the internal EditText of the SearchView
+                val searchEditText = v.findViewById<EditText>(androidx.appcompat.R.id.search_src_text)
+                if (searchEditText != null) {
+                    searchEditText.requestFocus()
+                    val imm = requireContext().getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
+                    imm.showSoftInput(searchEditText, InputMethodManager.SHOW_IMPLICIT)
+                }
+            }
+        }
+
+        // Make the SearchView always expanded and ready for input
+        stationSearchBoxView.isIconified = false
+    }
+
+    private fun handleSearch(query: String) {
+        if (query.isEmpty()) {
+            resetLayout(true)
+            return
+        }
+        showProgressIndicator()
+        if (query.startsWith("http")) {
+            directInputCheck.checkStationAddress(requireContext(), query)
+        } else {
+            radioBrowserSearch.searchStation(requireContext(), query, Keys.SEARCH_TYPE_BY_KEYWORD)
+        }
+    }
+
+    private fun addStationAndExit() {
+        searchResultAdapter.stopPrePlayback()
+        val currentCollection = collectionViewModel.collectionLiveData.value ?: return
+        if (station.streamContent.isNotEmpty() && station.streamContent != Keys.MIME_TYPE_UNSUPPORTED) {
+            CollectionHelper.addStation(requireContext(), currentCollection, station)
+            findNavController().navigateUp()
+        } else {
+            CoroutineScope(IO).launch {
+                val contentType = NetworkHelper.detectContentType(station.getStreamUri())
+                station.streamContent = contentType.type
+                withContext(Main) {
+                    CollectionHelper.addStation(requireContext(), currentCollection, station)
+                    findNavController().navigateUp()
+                }
+            }
+        }
+    }
+
+    override fun onSearchResultTapped(result: Station) {
+        station = result
+        activateAddButton()
+    }
+
+    override fun activateAddButton() {
+        positiveButton.isEnabled = true
+    }
+
+    override fun deactivateAddButton() {
+        positiveButton.isEnabled = false
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    override fun onRadioBrowserSearchResults(results: Array<RadioBrowserResult>) {
+        if (results.isNotEmpty()) {
+            searchResultAdapter.searchResults = results.map { it.toStation() }
+            searchResultAdapter.notifyDataSetChanged()
+            resetLayout(false)
+        } else {
+            showNoResultsError()
+        }
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    override fun onDirectInputCheck(stationList: MutableList<Station>) {
+        if (stationList.isNotEmpty()) {
+            searchResultAdapter.searchResults = stationList
+            searchResultAdapter.notifyDataSetChanged()
+            resetLayout(false)
+        } else {
+            showNoResultsError()
+        }
+    }
+
+    private fun resetLayout(clear: Boolean) {
+        positiveButton.isEnabled = false
+        searchRequestProgressIndicator.isGone = true
+        noSearchResultsTextView.isGone = true
+        if (clear) searchResultAdapter.resetSelection(true)
+    }
+
+    private fun showProgressIndicator() {
+        searchRequestProgressIndicator.isVisible = true
+        noSearchResultsTextView.isGone = true
+    }
+
+    private fun showNoResultsError() {
+        searchRequestProgressIndicator.isGone = true
+        noSearchResultsTextView.isVisible = true
+    }
+}

app/src/main/java/com/michatec/radio/CastOptionsProvider.kt

@@ -0,0 +1,33 @@
+package com.michatec.radio
+
+import android.content.Context
+import com.google.android.gms.cast.CastMediaControlIntent
+import com.google.android.gms.cast.framework.CastOptions
+import com.google.android.gms.cast.framework.OptionsProvider
+import com.google.android.gms.cast.framework.SessionProvider
+import com.google.android.gms.cast.framework.media.CastMediaOptions
+import com.google.android.gms.cast.framework.media.NotificationOptions
+
+@Suppress("unused")
+class CastOptionsProvider : OptionsProvider {
+    override fun getCastOptions(context: Context): CastOptions {
+        val notificationOptions = NotificationOptions.Builder()
+            .setTargetActivityClassName(MainActivity::class.java.name)
+            .build()
+        val mediaOptions = CastMediaOptions.Builder()
+            .setNotificationOptions(notificationOptions)
+            .setExpandedControllerActivityClassName(ExpandedControllerActivity::class.java.name)
+            .build()
+
+        return CastOptions.Builder()
+            .setReceiverApplicationId(CastMediaControlIntent.DEFAULT_MEDIA_RECEIVER_APPLICATION_ID)
+            .setResumeSavedSession(true)
+            .setStopReceiverApplicationWhenEndingSession(true)
+            .setCastMediaOptions(mediaOptions)
+            .build()
+    }
+
+    override fun getAdditionalSessionProviders(context: Context): List<SessionProvider>? {
+        return null
+    }
+}

app/src/main/java/com/michatec/radio/EqualizerFragment.kt

@@ -0,0 +1,68 @@
+package com.michatec.radio
+
+import android.os.Bundle
+import android.view.View
+import androidx.appcompat.app.AppCompatActivity
+import androidx.preference.Preference
+import androidx.preference.PreferenceFragmentCompat
+import androidx.preference.SeekBarPreference
+import com.michatec.radio.helpers.PreferencesHelper
+
+/*
+ * EqualizerFragment class: Handles audio frequency settings with 10-band EQ
+ */
+class EqualizerFragment : PreferenceFragmentCompat() {
+
+    // EQ band frequencies matching radio.cpp
+    private val eqFrequencies = arrayOf("31 Hz", "62 Hz", "125 Hz", "250 Hz", "500 Hz", "1 kHz", "2 kHz", "4 kHz", "8 kHz", "16 kHz")
+    private val eqKeys = arrayOf(
+        Keys.PREF_EQ_LOW,           // Band 0: 31 Hz
+        Keys.PREF_EQ_BAND_1,        // Band 1: 62 Hz
+        Keys.PREF_EQ_BAND_2,        // Band 2: 125 Hz
+        Keys.PREF_EQ_BAND_3,        // Band 3: 250 Hz
+        Keys.PREF_EQ_BAND_4,        // Band 4: 500 Hz
+        Keys.PREF_EQ_BAND_5,        // Band 5: 1 kHz
+        Keys.PREF_EQ_MID,           // Band 6: 2 kHz
+        Keys.PREF_EQ_BAND_6,        // Band 7: 4 kHz
+        Keys.PREF_EQ_BAND_7,        // Band 8: 8 kHz
+        Keys.PREF_EQ_HIGH           // Band 9: 16 kHz
+    )
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.pref_equalizer_title)
+    }
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+        val context = preferenceManager.context
+        val screen = preferenceManager.createPreferenceScreen(context)
+
+        // Reset Button
+        val resetPreference = Preference(context)
+        resetPreference.title = getString(R.string.pref_equalizer_reset_title)
+        resetPreference.setIcon(R.drawable.ic_refresh_24dp)
+        resetPreference.setOnPreferenceClickListener {
+            PreferencesHelper.resetEqualizer()
+            for (key in eqKeys) {
+                findPreference<SeekBarPreference>(key)?.value = 0
+            }
+            return@setOnPreferenceClickListener true
+        }
+        screen.addPreference(resetPreference)
+
+        // Create 10-band EQ
+        for (i in eqKeys.indices) {
+            val eqBand = SeekBarPreference(context)
+            eqBand.title = "Equalizer: ${eqFrequencies[i]}"
+            eqBand.key = eqKeys[i]
+            eqBand.setIcon(R.drawable.ic_music_note_24dp)
+            eqBand.min = -12
+            eqBand.max = 12
+            eqBand.showSeekBarValue = true
+            eqBand.setDefaultValue(0)
+            screen.addPreference(eqBand)
+        }
+
+        preferenceScreen = screen
+    }
+}

app/src/main/java/com/michatec/radio/ExpandedControllerActivity.kt

@@ -0,0 +1,14 @@
+package com.michatec.radio
+
+import android.view.Menu
+import com.google.android.gms.cast.framework.CastButtonFactory
+import com.google.android.gms.cast.framework.media.widget.ExpandedControllerActivity
+
+class ExpandedControllerActivity : ExpandedControllerActivity() {
+    override fun onCreateOptionsMenu(menu: Menu): Boolean {
+        super.onCreateOptionsMenu(menu)
+        menuInflater.inflate(R.menu.expanded_controller, menu)
+        CastButtonFactory.setUpMediaRouteButton(this, menu, R.id.media_route_menu_item)
+        return true
+    }
+}

app/src/main/java/com/michatec/radio/Keys.kt

@@ -1,17 +1,3 @@
-/*
- * Keys.kt
- * Implements the keys used throughout the app
- * This object hosts all keys used to control Radio state
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import java.util.*
@@ -41,6 +27,7 @@ object Keys {
     const val EXTRA_START_LAST_PLAYED_STATION: String = "START_LAST_PLAYED_STATION"
     const val EXTRA_SLEEP_TIMER_REMAINING: String = "SLEEP_TIMER_REMAINING"
     const val EXTRA_METADATA_HISTORY: String = "METADATA_HISTORY"
+    const val EXTRA_VISUALIZER_DATA: String = "VISUALIZER_DATA"
 
     // arguments
     const val ARG_UPDATE_COLLECTION: String = "ArgUpdateCollection"
@@ -57,10 +44,10 @@ object Keys {
     const val CMD_PLAY_STREAM: String = "PLAY_STREAM"
     const val CMD_REQUEST_SLEEP_TIMER_REMAINING: String = "REQUEST_SLEEP_TIMER_REMAINING"
     const val CMD_REQUEST_METADATA_HISTORY: String = "REQUEST_METADATA_HISTORY"
+    const val CMD_GET_VISUALIZER_DATA: String = "GET_VISUALIZER_DATA"
 
     // preferences
     const val PREF_RADIO_BROWSER_API: String = "RADIO_BROWSER_API"
-    const val PREF_ONE_TIME_HOUSEKEEPING_NECESSARY: String = "ONE_TIME_HOUSEKEEPING_NECESSARY_VERSIONCODE_95" // increment to current app version code to trigger housekeeping that runs only once
     const val PREF_THEME_SELECTION: String = "THEME_SELECTION"
     const val PREF_LAST_UPDATE_COLLECTION: String = "LAST_UPDATE_COLLECTION"
     const val PREF_COLLECTION_SIZE: String = "COLLECTION_SIZE"
@@ -75,11 +62,40 @@ object Keys {
     const val PREF_LARGE_BUFFER_SIZE: String = "LARGE_BUFFER_SIZE"
     const val PREF_EDIT_STATIONS: String = "EDIT_STATIONS"
     const val PREF_EDIT_STREAMS_URIS: String = "EDIT_STREAMS_URIS"
+    const val PREF_BASS_BOOST: String = "BASS_BOOST"
+    const val PREF_REVERB: String = "REVERB"
+    const val PREF_DRC: String = "DRC"
+    const val PREF_EQ_LOW: String = "EQ_LOW"
+    const val PREF_EQ_MID: String = "EQ_MID"
+    const val PREF_EQ_HIGH: String = "EQ_HIGH"
+    const val PREF_EQUALIZER: String = "EQUALIZER_SETTINGS"
+    const val PREF_EQ_BAND_1: String = "EQ_BAND_1"
+    const val PREF_EQ_BAND_2: String = "EQ_BAND_2"
+    const val PREF_EQ_BAND_3: String = "EQ_BAND_3"
+    const val PREF_EQ_BAND_4: String = "EQ_BAND_4"
+    const val PREF_EQ_BAND_5: String = "EQ_BAND_5"
+    const val PREF_EQ_BAND_6: String = "EQ_BAND_6"
+    const val PREF_EQ_BAND_7: String = "EQ_BAND_7"
+    const val PREF_EQ_BAND_8: String = "EQ_BAND_8"
+    const val PREF_PRESET_SELECTED: String = "PRESET_SELECTED"
+    const val PREF_PRESET_EQ_BAND_0: String = "PRESET_EQ_BAND_0"
+    const val PREF_PRESET_EQ_BAND_1: String = "PRESET_EQ_BAND_1"
+    const val PREF_PRESET_EQ_BAND_2: String = "PRESET_EQ_BAND_2"
+    const val PREF_PRESET_EQ_BAND_3: String = "PRESET_EQ_BAND_3"
+    const val PREF_PRESET_EQ_BAND_4: String = "PRESET_EQ_BAND_4"
+    const val PREF_PRESET_EQ_BAND_5: String = "PRESET_EQ_BAND_5"
+    const val PREF_PRESET_EQ_BAND_6: String = "PRESET_EQ_BAND_6"
+    const val PREF_PRESET_EQ_BAND_7: String = "PRESET_EQ_BAND_7"
+    const val PREF_PRESET_EQ_BAND_8: String = "PRESET_EQ_BAND_8"
+    const val PREF_PRESET_EQ_BAND_9: String = "PRESET_EQ_BAND_9"
+    const val PREF_PRESET_BASS_BOOST: String = "PRESET_BASS_BOOST"
+    const val PREF_PRESET_REVERB: String = "PRESET_REVERB"
+    const val PREF_PRESET_DRC: String = "PRESET_DRC"
+    const val PREF_PRESET_STEREO_WIDTH: String = "PRESET_STEREO_WIDTH"
 
     // default const values
     const val DEFAULT_SIZE_OF_METADATA_HISTORY: Int = 25
     const val DEFAULT_MAX_LENGTH_OF_METADATA_ENTRY: Int = 127
-    const val DEFAULT_DOWNLOAD_OVER_MOBILE: Boolean = false
     const val ACTIVE_DOWNLOADS_EMPTY: String = "zero"
     const val DEFAULT_MAX_RECONNECTION_COUNT: Int = 30
     const val LARGE_BUFFER_SIZE_MULTIPLIER: Int = 8
@@ -138,7 +154,7 @@ object Keys {
     const val FOLDER_AUDIO: String = "audio"
     const val FOLDER_IMAGES: String = "images"
     const val FOLDER_TEMP: String = "temp"
-    const val URLRADIO_LEGACY_FOLDER_COLLECTION: String = "Collection"
+    const val RADIO_LEGACY_FOLDER_COLLECTION: String = "Collection"
 
     // file names and extensions
     const val COLLECTION_FILE: String = "collection.json"
@@ -150,9 +166,6 @@ object Keys {
     const val RADIO_BROWSER_API_BASE: String = "all.api.radio-browser.info"
     const val RADIO_BROWSER_API_DEFAULT: String = "de1.api.radio-browser.info"
 
-    // locations
-    const val LOCATION_DEFAULT_STATION_IMAGE: String = "android.resource://com.michatec.radio/drawable/ic_default_station_image_24dp"
-
     // sizes (in dp)
     const val SIZE_STATION_IMAGE_CARD: Int = 72
     const val SIZE_STATION_IMAGE_MAXIMUM: Int = 640

app/src/main/java/com/michatec/radio/MainActivity.kt

@@ -1,32 +1,23 @@
-/*
- * MainActivity.kt
- * Implements the MainActivity class
- * MainActivity is the default activity that can host the player fragment and the settings fragment
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.view.View
+import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.appcompat.widget.Toolbar
+import androidx.core.view.isVisible
 import androidx.navigation.fragment.NavHostFragment
 import androidx.navigation.ui.AppBarConfiguration
 import androidx.navigation.ui.NavigationUI
 import androidx.navigation.ui.navigateUp
 import com.michatec.radio.helpers.AppThemeHelper
 import com.michatec.radio.helpers.FileHelper
-import com.michatec.radio.helpers.ImportHelper
 import com.michatec.radio.helpers.PreferencesHelper
-
+import org.woheller69.freeDroidWarn.FreeDroidWarn
 
 /*
  * MainActivity class
@@ -36,22 +27,14 @@ class MainActivity : AppCompatActivity() {
     /* Main class variables */
     private lateinit var appBarConfiguration: AppBarConfiguration
 
-
     /* Overrides onCreate from AppCompatActivity */
     override fun onCreate(savedInstanceState: Bundle?) {
+        enableEdgeToEdge()
+        setTheme(R.style.AppTheme)
         super.onCreate(savedInstanceState)
 
-        // house-keeping: determine if edit stations is enabled by default todo: remove in 2023
-        if (PreferencesHelper.isHouseKeepingNecessary()) {
-            // house-keeping 1: remove hard coded default image
-            ImportHelper.removeDefaultStationImageUris(this)
-            // house-keeping 2: if existing user detected, enable Edit Stations by default
-            if (PreferencesHelper.loadCollectionSize() != -1) {
-                // existing user detected - enable Edit Stations by default
-                PreferencesHelper.saveEditStationsEnabled(true)
-            }
-            PreferencesHelper.saveHouseKeepingNecessaryState()
-        }
+        // Free Android
+        FreeDroidWarn.showWarningOnUpgrade(this, BuildConfig.VERSION_CODE)
 
         // set up views
         setContentView(R.layout.activity_main)
@@ -62,21 +45,51 @@ class MainActivity : AppCompatActivity() {
         // set up action bar
         setSupportActionBar(findViewById(R.id.main_toolbar))
         val toolbar: Toolbar = findViewById(R.id.main_toolbar)
-        val navHostFragment = supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
+        val navHostFragment =
+            supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
         val navController = navHostFragment.navController
         appBarConfiguration = AppBarConfiguration(navController.graph)
         NavigationUI.setupWithNavController(toolbar, navController, appBarConfiguration)
         supportActionBar?.hide()
 
+        // TV-specific loading logic: Hide the overlay once the app is ready
+        if (packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
+            Handler(Looper.getMainLooper()).postDelayed({
+                hideLoadingOverlay()
+            }, 1200)
+        } else {
+            findViewById<View>(R.id.loading_layout)?.visibility = View.GONE
+        }
+
         // register listener for changes in shared preferences
         PreferencesHelper.registerPreferenceChangeListener(sharedPreferenceChangeListener)
     }
 
+    /* Hides the loading/splash overlay */
+    private fun hideLoadingOverlay() {
+        findViewById<View>(R.id.loading_layout)?.let { overlay ->
+            if (overlay.isVisible) {
+                overlay.animate().alpha(0f).setDuration(500)
+                    .withEndAction { overlay.visibility = View.GONE }
+            }
+        }
+    }
+
+
+    /* Overrides onResume from AppCompatActivity */
+    override fun onResume() {
+        try {
+            super.onResume()
+        } catch (_: ClassCastException) {
+            // Do nothing
+        }
+    }
+
 
     /* Overrides onSupportNavigateUp from AppCompatActivity */
     override fun onSupportNavigateUp(): Boolean {
-        // Taken from: https://developer.android.com/guide/navigation/navigation-ui#action_bar
-        val navHostFragment = supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
+        val navHostFragment =
+            supportFragmentManager.findFragmentById(R.id.main_host_container) as NavHostFragment
         val navController = navHostFragment.navController
         return navController.navigateUp(appBarConfiguration) || super.onSupportNavigateUp()
     }

app/src/main/java/com/michatec/radio/PlayerFragment.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerFragment.kt
- * Implements the PlayerFragment class
- * PlayerFragment is the fragment that hosts Radio's list of stations and a player sheet
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Activity
@@ -32,17 +18,23 @@ import androidx.activity.OnBackPressedCallback
 import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.PickVisualMediaRequest
 import androidx.activity.result.contract.ActivityResultContracts
+import androidx.annotation.OptIn
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+import androidx.core.view.updatePadding
 import androidx.fragment.app.Fragment
 import androidx.lifecycle.ViewModelProvider
 import androidx.media3.common.MediaItem
 import androidx.media3.common.PlaybackException
 import androidx.media3.common.Player
+import androidx.media3.common.util.UnstableApi
 import androidx.media3.session.MediaController
 import androidx.media3.session.SessionResult
 import androidx.media3.session.SessionToken
+import androidx.navigation.fragment.findNavController
 import androidx.recyclerview.widget.ItemTouchHelper
 import androidx.recyclerview.widget.RecyclerView
 import com.android.volley.Request
@@ -179,9 +171,11 @@ class PlayerFragment : Fragment(),
         // hide action bar
         (activity as AppCompatActivity).supportActionBar?.hide()
 
-        // set the same background color of the player sheet for the navigation bar
-        (activity as AppCompatActivity).window.navigationBarColor = ContextCompat.getColor(requireActivity(), R.color.player_sheet_background)
-
+        ViewCompat.setOnApplyWindowInsetsListener(layout.rootView) { v, insets ->
+            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
+            v.updatePadding(bottom = systemBars.bottom)
+            insets
+        }
         // associate the ItemTouchHelper with the RecyclerView
         itemTouchHelper = ItemTouchHelper(ItemTouchHelperCallback())
         itemTouchHelper?.attachToRecyclerView(layout.recyclerView)
@@ -209,14 +203,14 @@ class PlayerFragment : Fragment(),
         }
 
         override fun onMove(recyclerView: RecyclerView, viewHolder: RecyclerView.ViewHolder, target: RecyclerView.ViewHolder): Boolean {
-            val fromPosition = viewHolder.adapterPosition
-            val toPosition = target.adapterPosition
+            val fromPosition = viewHolder.bindingAdapterPosition
+            val toPosition = target.bindingAdapterPosition
             collectionAdapter.onItemMove(fromPosition, toPosition)
             return true
         }
 
         override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
-            val position = viewHolder.adapterPosition
+            val position = viewHolder.bindingAdapterPosition
             collectionAdapter.onItemDismiss(position)
         }
 
@@ -255,7 +249,6 @@ class PlayerFragment : Fragment(),
         // load player state
         playerState = PreferencesHelper.loadPlayerState()
         // recreate player ui
-//        setupPlaybackControls()
         updatePlayerViews()
         updateStationListState()
         togglePeriodicSleepTimerUpdateRequest()
@@ -263,8 +256,8 @@ class PlayerFragment : Fragment(),
         observeCollectionViewModel()
         // handle navigation arguments
         handleNavigationArguments()
-//        // handle start intent - if started via tap on rss link
-//        handleStartIntent()
+        // handle start intent - if started via tap on rss link
+        handleStartIntent()
         // start watching for changes in shared preferences
         PreferencesHelper.registerPreferenceChangeListener(this as SharedPreferences.OnSharedPreferenceChangeListener)
     }
@@ -350,7 +343,14 @@ class PlayerFragment : Fragment(),
 
     /* Overrides onAddNewButtonTapped from CollectionAdapterListener */
     override fun onAddNewButtonTapped() {
-        FindStationDialog(activity as Activity, this as FindStationDialog.FindStationDialogListener).show()
+        // stop playback when adding a new station
+        controller?.stop()
+
+        if (activity?.packageManager?.hasSystemFeature(PackageManager.FEATURE_LEANBACK) == true) {
+            findNavController().navigate(R.id.action_map_fragment_to_player_to_add_station)
+        } else {
+            FindStationDialog(activity as Activity, this as FindStationDialog.FindStationDialogListener).show()
+        }
     }
 
 
@@ -395,6 +395,7 @@ class PlayerFragment : Fragment(),
 
 
     /* Initializes the MediaController - handles connection to PlayerService under the hood */
+    @OptIn(UnstableApi::class)
     private fun initializeController() {
         controllerFuture = MediaController.Builder(
             activity as Context,
@@ -409,6 +410,7 @@ class PlayerFragment : Fragment(),
 
     /* Releases MediaController */
     private fun releaseController() {
+        controller?.removeListener(playerListener)
         MediaController.releaseFuture(controllerFuture)
     }
 
@@ -417,6 +419,13 @@ class PlayerFragment : Fragment(),
     private fun setupController() {
         val controller: MediaController = this.controller ?: return
         controller.addListener(playerListener)
+
+        // Sync local playerState with actual controller state
+        if (playerState.isPlaying != controller.isPlaying) {
+            playerState.isPlaying = controller.isPlaying
+            updatePlayerViews()
+        }
+
         requestMetadataUpdate()
         // handle start intent
         handleStartIntent()
@@ -432,15 +441,15 @@ class PlayerFragment : Fragment(),
         val swipeToDeleteHandler = object : UiHelper.SwipeToDeleteCallback(activity as Context) {
             override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
                 // ask user
-                val adapterPosition: Int = viewHolder.adapterPosition
+                val bindingAdapterPosition: Int = viewHolder.bindingAdapterPosition
                 val dialogMessage =
-                    "${getString(R.string.dialog_yes_no_message_remove_station)}\n\n- ${collection.stations[adapterPosition].name}"
+                    "${getString(R.string.dialog_yes_no_message_remove_station)}\n\n- ${collection.stations[bindingAdapterPosition].name}"
                 YesNoDialog(this@PlayerFragment as YesNoDialog.YesNoDialogListener).show(
                     context = activity as Context,
                     type = Keys.DIALOG_REMOVE_STATION,
                     messageString = dialogMessage,
                     yesButton = R.string.dialog_yes_no_positive_button_remove_station,
-                    payload = adapterPosition
+                    payload = bindingAdapterPosition
                 )
             }
         }
@@ -452,15 +461,15 @@ class PlayerFragment : Fragment(),
             object : UiHelper.SwipeToMarkStarredCallback(activity as Context) {
                 override fun onSwiped(viewHolder: RecyclerView.ViewHolder, direction: Int) {
                     // mark card starred
-                    val adapterPosition: Int = viewHolder.adapterPosition
-                    collectionAdapter.toggleStarredStation(activity as Context, adapterPosition)
+                    val bindingAdapterPosition: Int = viewHolder.bindingAdapterPosition
+                    collectionAdapter.toggleStarredStation(activity as Context, bindingAdapterPosition)
                 }
             }
         val swipeToMarkStarredItemTouchHelper = ItemTouchHelper(swipeToMarkStarredHandler)
         swipeToMarkStarredItemTouchHelper.attachToRecyclerView(layout.recyclerView)
 
         // set up sleep timer start button
-        layout.sheetSleepTimerStartButtonView.setOnClickListener {
+        layout.sheetSleepTimerStartButtonView?.setOnClickListener {
             when (controller?.isPlaying) {
                 true -> {
                     val timePicker = MaterialTimePicker.Builder()
@@ -490,30 +499,30 @@ class PlayerFragment : Fragment(),
         }
 
         // set up sleep timer cancel button
-        layout.sheetSleepTimerCancelButtonView.setOnClickListener {
+        layout.sheetSleepTimerCancelButtonView?.setOnClickListener {
             playerState.sleepTimerRunning = false
             controller?.cancelSleepTimer()
             togglePeriodicSleepTimerUpdateRequest()
         }
 
+        // set up TV station navigation
+        layout.playerPrevButtonView?.setOnClickListener {
+            val currentPosition = CollectionHelper.getStationPosition(collection, playerState.stationUuid)
+            if (currentPosition > 0) {
+                val prevStation = collection.stations[currentPosition - 1]
+                onPlayButtonTapped(prevStation.uuid)
+            }
+        }
+        layout.playerNextButtonView?.setOnClickListener {
+            val currentPosition = CollectionHelper.getStationPosition(collection, playerState.stationUuid)
+            if (currentPosition < collection.stations.size - 1) {
+                val nextStation = collection.stations[currentPosition + 1]
+                onPlayButtonTapped(nextStation.uuid)
+            }
+        }
+
     }
 
-
-//    /* Sets up the general playback controls - Note: station specific controls and views are updated in updatePlayerViews() */
-//    // it is probably okay to suppress this warning - the OnTouchListener on the time played view does only toggle the time duration / remaining display
-//    private fun setupPlaybackControls() {
-//
-//        // main play/pause button
-//        layout.playButtonView.setOnClickListener {
-//            onPlayButtonTapped(playerState.stationUuid, playerState.playbackState)
-//            //onPlayButtonTapped(playerState.stationUuid, playerController.getPlaybackState().state) // todo remove
-//        }
-//
-//        // register a callback to stay in sync
-//        playerController.registerCallback(mediaControllerCallback)
-//    }
-
-
     /* Sets up the player */
     private fun updatePlayerViews() {
         // get station
@@ -549,7 +558,7 @@ class PlayerFragment : Fragment(),
     private fun requestSleepTimerUpdate() {
         val resultFuture: ListenableFuture<SessionResult>? =
             controller?.requestSleepTimerRemaining()
-        resultFuture?.addListener(Runnable {
+        resultFuture?.addListener({
             val timeRemaining: Long = resultFuture.get().extras.getLong(Keys.EXTRA_SLEEP_TIMER_REMAINING)
             layout.updateSleepTimer(activity as Context, timeRemaining)
         }, MoreExecutors.directExecutor())
@@ -559,7 +568,7 @@ class PlayerFragment : Fragment(),
     /* Requests an update of the metadata history from the player service */
     private fun requestMetadataUpdate() {
         val resultFuture: ListenableFuture<SessionResult>? = controller?.requestMetadataHistory()
-        resultFuture?.addListener(Runnable {
+        resultFuture?.addListener({
             val metadata: ArrayList<String>? = resultFuture.get().extras.getStringArrayList(Keys.EXTRA_METADATA_HISTORY)
             layout.updateMetadata(metadata?.toMutableList())
         }, MoreExecutors.directExecutor())
@@ -573,22 +582,34 @@ class PlayerFragment : Fragment(),
 
     /* Handles this activity's start intent */
     private fun handleStartIntent() {
-        if ((activity as Activity).intent.action != null) {
-            when ((activity as Activity).intent.action) {
-                Keys.ACTION_SHOW_PLAYER -> handleShowPlayer()
-                Intent.ACTION_VIEW -> handleViewIntent()
-                Keys.ACTION_START -> handleStartPlayer()
+        val intent = (activity as Activity).intent
+        if (intent.action != null && intent.action?.isNotEmpty() == true) {
+            var handled = false
+            when (intent.action) {
+                Keys.ACTION_SHOW_PLAYER -> {
+                    handleShowPlayer()
+                    handled = true
+                }
+                Intent.ACTION_VIEW -> {
+                    handleViewIntent()
+                    handled = true
+                }
+                Keys.ACTION_START -> {
+                    handled = handleStartPlayer()
+                }
+            }
+            if (handled) {
+                // clear intent action to prevent double calls
+                intent.action = ""
             }
         }
-        // clear intent action to prevent double calls
-        (activity as Activity).intent.action = ""
     }
 
 
     /* Handles ACTION_SHOW_PLAYER request from notification */
     private fun handleShowPlayer() {
         Log.i(TAG, "Tap on notification registered.")
-        // todo implement
+        layout.showPlayer(requireActivity())
     }
 
 
@@ -602,16 +623,18 @@ class PlayerFragment : Fragment(),
                 val scheme: String = intentUri.scheme ?: String()
                 // CASE: intent is a web link
                 if (scheme.startsWith("http")) {
-                    Log.i(TAG, "Transistor was started to handle a web link.")
+                    Log.i(TAG, "Radio was started to handle a web link.")
                     stationList.addAll(CollectionHelper.createStationsFromUrl(intentUri.toString()))
                 }
                 // CASE: intent is a local file
                 else if (scheme.startsWith("content")) {
-                    Log.i(TAG, "Transistor was started to handle a local audio playlist.")
+                    Log.i(TAG, "Radio was started to handle a local audio playlist.")
                     stationList.addAll(CollectionHelper.createStationListFromContentUri(activity as Context, intentUri))
                 }
                 withContext(Main) {
                     if (stationList.isNotEmpty()) {
+                        // stop playback when adding a new station via intent
+                        controller?.stop()
                         AddStationDialog(activity as Activity, stationList, this@PlayerFragment as AddStationDialog.AddStationDialogListener).show()
                     } else {
                         // invalid address
@@ -624,17 +647,30 @@ class PlayerFragment : Fragment(),
 
 
     /* Handles START_PLAYER_SERVICE request from App Shortcut */
-    private fun handleStartPlayer() {
+    private fun handleStartPlayer(): Boolean {
+        if (controller == null || collection.stations.isEmpty()) {
+            return false
+        }
         val intent: Intent = (activity as Activity).intent
         if (intent.hasExtra(Keys.EXTRA_START_LAST_PLAYED_STATION)) {
-            controller?.play(activity as Context, CollectionHelper.getStation(collection, playerState.stationUuid))
+            val station = CollectionHelper.getStation(collection, playerState.stationUuid)
+            if (station.isValid()) {
+                controller?.play(activity as Context, station)
+                return true
+            }
         } else if (intent.hasExtra(Keys.EXTRA_STATION_UUID)) {
             val uuid: String = intent.getStringExtra(Keys.EXTRA_STATION_UUID) ?: String()
-            controller?.play(activity as Context, CollectionHelper.getStation(collection, uuid))
+            val station = CollectionHelper.getStation(collection, uuid)
+            if (station.isValid()) {
+                controller?.play(activity as Context, station)
+                return true
+            }
         } else if (intent.hasExtra(Keys.EXTRA_STREAM_URI)) {
             val streamUri: String = intent.getStringExtra(Keys.EXTRA_STREAM_URI) ?: String()
             controller?.playStreamDirectly(streamUri)
+            return true
         }
+        return false
     }
 
 
@@ -650,16 +686,16 @@ class PlayerFragment : Fragment(),
         collectionViewModel.collectionLiveData.observe(this) {
             // update collection
             collection = it
-////            // updates current station in player views
-////            playerState = PreferencesHelper.loadPlayerState()
-//            // get station
-//            val station: Station = CollectionHelper.getStation(collection, playerState.stationUuid)
-//            // update player views
-//            layout.updatePlayerViews(activity as Context, station, playerState.isPlaying)
-////            // handle start intent
-////            handleStartIntent()
-////            // handle navigation arguments
-////            handleNavigationArguments()
+            // updates current station in player views
+            playerState = PreferencesHelper.loadPlayerState()
+            // get station
+            val station: Station = CollectionHelper.getStation(collection, playerState.stationUuid)
+            // update player views
+            layout.updatePlayerViews(activity as Context, station, playerState.isPlaying)
+            // handle start intent
+            handleStartIntent()
+            // handle navigation arguments
+            handleNavigationArguments()
         }
         collectionViewModel.collectionSizeLiveData.observe(this) {
             // size of collection changed
@@ -754,6 +790,7 @@ class PlayerFragment : Fragment(),
                 layout.showBufferingIndicator(buffering = false)
             } else {
                 // playback is paused or stopped
+                layout.updateSleepTimer(activity as Context, 0L)
                 // check if buffering (playback is not active but playWhenReady is true)
                 if (controller?.playWhenReady == true) {
                     // playback is buffering, show the buffering indicator
@@ -783,7 +820,7 @@ class PlayerFragment : Fragment(),
 
 
     /*
-     * Check for update on github
+     * Check for update on GitHub
      */
     private fun checkForUpdates() {
         val url = getString(R.string.snackbar_github_update_check_url)
@@ -801,7 +838,7 @@ class PlayerFragment : Fragment(),
                         .setAction(R.string.snackbar_show) {
                             val releaseurl = getString(R.string.snackbar_url_app_home_page)
                             val i = Intent(Intent.ACTION_VIEW)
-                            i.data = Uri.parse(releaseurl)
+                            i.data = releaseurl.toUri()
                             // Not sure that does anything
                             i.putExtra("SOURCE", "SELF")
                             startActivity(i)
@@ -820,9 +857,4 @@ class PlayerFragment : Fragment(),
         request.tag = TAG
         queue.add(request)
     }
-
-    /*
-     * End of declaration
-     */
 }
-

app/src/main/java/com/michatec/radio/PlayerService.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerService.kt
- * Implements the PlayerService class
- * PlayerService is Radio's foreground service that plays radio station audio
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.PendingIntent
@@ -24,12 +10,16 @@ import android.os.CountDownTimer
 import android.util.Log
 import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import androidx.media.MediaBrowserServiceCompat.BrowserRoot.EXTRA_RECENT
+import androidx.media3.cast.CastPlayer
 import androidx.media3.common.*
 import androidx.media3.common.util.UnstableApi
 import androidx.media3.datasource.HttpDataSource
 import androidx.media3.exoplayer.DefaultLoadControl
+import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.ExoPlayer
 import androidx.media3.exoplayer.analytics.AnalyticsListener
+import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.audio.DefaultAudioSink
 import androidx.media3.exoplayer.source.DefaultMediaSourceFactory
 import androidx.media3.exoplayer.upstream.DefaultAllocator
 import androidx.media3.exoplayer.upstream.DefaultLoadErrorHandlingPolicy
@@ -39,10 +29,7 @@ import com.google.common.collect.ImmutableList
 import com.google.common.util.concurrent.Futures
 import com.google.common.util.concurrent.ListenableFuture
 import com.michatec.radio.core.Collection
-import com.michatec.radio.helpers.AudioHelper
-import com.michatec.radio.helpers.CollectionHelper
-import com.michatec.radio.helpers.FileHelper
-import com.michatec.radio.helpers.PreferencesHelper
+import com.michatec.radio.helpers.*
 import kotlinx.coroutines.*
 import kotlinx.coroutines.Dispatchers.Main
 import java.util.*
@@ -52,13 +39,15 @@ import java.util.*
  * PlayerService class
  */
 @UnstableApi
-class PlayerService : MediaLibraryService() {
+class PlayerService : MediaLibraryService(), SharedPreferences.OnSharedPreferenceChangeListener {
 
     /* Define log tag */
     private val TAG: String = PlayerService::class.java.simpleName
 
     /* Main class variables */
     private lateinit var player: Player
+    private lateinit var exoPlayer: ExoPlayer
+    private lateinit var castPlayer: CastPlayer
     private lateinit var mediaLibrarySession: MediaLibrarySession
     private lateinit var sleepTimer: CountDownTimer
     var sleepTimerTimeRemaining: Long = 0L
@@ -70,6 +59,9 @@ class PlayerService : MediaLibraryService() {
     private var playbackRestartCounter: Int = 0
     private var playLastStation: Boolean = false
     private var manuallyCancelledSleepTimer = false
+    
+    // Native Audio Processor instance
+    private val nativeAudioProcessor = NativeAudioProcessor()
 
 
     /* Overrides onCreate from Service */
@@ -90,21 +82,31 @@ class PlayerService : MediaLibraryService() {
         setMediaNotificationProvider(notificationProvider)
         // fetch the metadata history
         metadataHistory = PreferencesHelper.loadMetadataHistory()
+        
+        // register preference change listener
+        PreferencesHelper.registerPreferenceChangeListener(this)
+        // apply initial audio effects
+        applyAudioEffects()
     }
 
 
     /* Overrides onDestroy from Service */
     override fun onDestroy() {
-        // player.removeAnalyticsListener(analyticsListener)
+        // Reset playing state in preferences
+        PreferencesHelper.saveIsPlaying(false)
         player.removeListener(playerListener)
         player.release()
+        exoPlayer.release()
+        castPlayer.release()
         mediaLibrarySession.release()
+        // unregister preference change listener
+        PreferencesHelper.unregisterPreferenceChangeListener(this)
         super.onDestroy()
     }
 
 
     /* Overrides onTaskRemoved from Service */
-    override fun onTaskRemoved(rootIntent: Intent) {
+    override fun onTaskRemoved(rootIntent: Intent?) {
         if (!player.playWhenReady) {
             stopSelf()
         }
@@ -119,8 +121,26 @@ class PlayerService : MediaLibraryService() {
 
     /* Initializes the ExoPlayer */
     private fun initializePlayer() {
-        val exoPlayer: ExoPlayer = ExoPlayer.Builder(this).apply {
-            setAudioAttributes(AudioAttributes.DEFAULT, true)
+        val audioAttributes = AudioAttributes.Builder()
+            .setContentType(C.AUDIO_CONTENT_TYPE_MUSIC)
+            .setUsage(C.USAGE_MEDIA)
+            .build()
+
+        // Create a RenderersFactory that injects the NativeAudioProcessor
+        val renderersFactory = object : DefaultRenderersFactory(this) {
+            override fun buildAudioSink(
+                context: Context,
+                enableFloatOutput: Boolean,
+                enableAudioTrackPlaybackParams: Boolean
+            ): AudioSink? {
+                return DefaultAudioSink.Builder(context)
+                    .setAudioProcessors(arrayOf(nativeAudioProcessor))
+                    .build()
+            }
+        }
+
+        exoPlayer = ExoPlayer.Builder(this, renderersFactory).apply {
+            setAudioAttributes(audioAttributes, true)
             setHandleAudioBecomingNoisy(true)
             setLoadControl(createDefaultLoadControl(bufferSizeMultiplier))
             setMediaSourceFactory(
@@ -132,8 +152,12 @@ class PlayerService : MediaLibraryService() {
         exoPlayer.addAnalyticsListener(analyticsListener)
         exoPlayer.addListener(playerListener)
 
-        // manually add seek to next and seek to previous since headphones issue them and they are translated to next and previous station
-        player = object : ForwardingPlayer(exoPlayer) {
+        // Initialize CastPlayer
+        castPlayer = CastPlayer.Builder(this).setLocalPlayer(exoPlayer).build()
+
+        // manually add seek to next and seek to previous since headphones issue them, and they are translated to next and previous station
+        // IMPORTANT: Use castPlayer here instead of exoPlayer so the session controls both local and remote playback
+        player = object : ForwardingPlayer(castPlayer) {
             override fun getAvailableCommands(): Player.Commands {
                 return super.getAvailableCommands().buildUpon().add(COMMAND_SEEK_TO_NEXT)
                     .add(COMMAND_SEEK_TO_PREVIOUS).build()
@@ -147,6 +171,7 @@ class PlayerService : MediaLibraryService() {
                 return C.TIME_UNSET // this will hide progress bar for HLS stations in the notification
             }
         }
+        player.addListener(playerListener)
     }
 
 
@@ -210,12 +235,9 @@ class PlayerService : MediaLibraryService() {
     /* Cancels sleep timer */
     private fun cancelSleepTimer() {
         if (this::sleepTimer.isInitialized) {
-            if (manuallyCancelledSleepTimer) {
-                sleepTimerTimeRemaining = 0L
-                sleepTimer.cancel()
-            }
-            manuallyCancelledSleepTimer = false
+            sleepTimer.cancel()
         }
+        sleepTimerTimeRemaining = 0L
         // store timer state
         PreferencesHelper.saveSleepTimerRunning(isRunning = false)
     }
@@ -258,11 +280,69 @@ class PlayerService : MediaLibraryService() {
                 async(Dispatchers.Default) { FileHelper.readCollectionSuspended(context) }
             // wait for result and update collection
             collection = deferred.await()
-//            // special case: trigger metadata view update for stations that have no metadata
-//            if (player.isPlaying && station.name == getCurrentMetadata()) {
-//                station = CollectionHelper.getStation(collection, station.uuid)
-//                updateMetadata(null)
-//            }
+        }
+    }
+
+
+    /* Applies audio effects based on preferences */
+    private fun applyAudioEffects() {
+        val selectedPreset = PreferencesHelper.loadSelectedPreset()
+        if (selectedPreset.isNotEmpty()) {
+            applyPreset(selectedPreset)
+        } else {
+            // Apply manual settings
+            nativeAudioProcessor.enableBassBoost(PreferencesHelper.loadBassBoost())
+            nativeAudioProcessor.setReverb(PreferencesHelper.loadReverb())
+            nativeAudioProcessor.enableDrc(PreferencesHelper.loadDrcEnabled())
+            nativeAudioProcessor.setWidth(1f)
+            // Apply all 10 EQ bands
+            val eqGains = FloatArray(10)
+            for (i in 0 until 10) {
+                eqGains[i] = PreferencesHelper.loadEqBand(i).toFloat()
+            }
+            nativeAudioProcessor.setEqAll(eqGains)
+        }
+    }
+
+    /* Applies a saved preset */
+    private fun applyPreset(presetName: String) {
+        when (presetName) {
+            getString(R.string.pref_preset_rock) -> nativeAudioProcessor.setPresetRock()
+            getString(R.string.pref_preset_pop) -> nativeAudioProcessor.setPresetPop()
+            getString(R.string.pref_preset_jazz) -> nativeAudioProcessor.setPresetJazz()
+            getString(R.string.pref_preset_flat) -> nativeAudioProcessor.setPresetFlat()
+            else -> {
+                // Custom preset - load from preferences
+                nativeAudioProcessor.enableDrc(PreferencesHelper.loadPresetDrc())
+                nativeAudioProcessor.setReverb(PreferencesHelper.loadPresetReverb())
+                nativeAudioProcessor.setWidth(PreferencesHelper.loadPresetStereoWidth())
+                nativeAudioProcessor.enableBassBoost(PreferencesHelper.loadPresetBassBoost())
+                val eqGains = FloatArray(10)
+                for (i in 0 until 10) {
+                    eqGains[i] = PreferencesHelper.loadPresetEqBand(i).toFloat()
+                }
+                nativeAudioProcessor.setEqAll(eqGains)
+            }
+        }
+    }
+
+    /* Overrides onSharedPreferenceChanged from SharedPreferences.OnSharedPreferenceChangeListener */
+    override fun onSharedPreferenceChanged(sharedPreferences: SharedPreferences?, key: String?) {
+        when (key) {
+            Keys.PREF_BASS_BOOST, Keys.PREF_REVERB, Keys.PREF_DRC,
+            Keys.PREF_EQ_LOW, Keys.PREF_EQ_MID, Keys.PREF_EQ_HIGH,
+            Keys.PREF_EQ_BAND_1, Keys.PREF_EQ_BAND_2, Keys.PREF_EQ_BAND_3,
+            Keys.PREF_EQ_BAND_4, Keys.PREF_EQ_BAND_5, Keys.PREF_EQ_BAND_6,
+            Keys.PREF_EQ_BAND_7, Keys.PREF_EQ_BAND_8,
+            Keys.PREF_PRESET_SELECTED,
+            Keys.PREF_PRESET_EQ_BAND_0, Keys.PREF_PRESET_EQ_BAND_1, Keys.PREF_PRESET_EQ_BAND_2,
+            Keys.PREF_PRESET_EQ_BAND_3, Keys.PREF_PRESET_EQ_BAND_4, Keys.PREF_PRESET_EQ_BAND_5,
+            Keys.PREF_PRESET_EQ_BAND_6, Keys.PREF_PRESET_EQ_BAND_7, Keys.PREF_PRESET_EQ_BAND_8,
+            Keys.PREF_PRESET_EQ_BAND_9,
+            Keys.PREF_PRESET_BASS_BOOST, Keys.PREF_PRESET_REVERB,
+            Keys.PREF_PRESET_DRC, Keys.PREF_PRESET_STEREO_WIDTH -> {
+                applyAudioEffects()
+            }
         }
     }
 
@@ -280,19 +360,8 @@ class PlayerService : MediaLibraryService() {
             val updatedMediaItems: List<MediaItem> =
                 mediaItems.map { mediaItem ->
                     CollectionHelper.getItem(this@PlayerService, collection, mediaItem.mediaId)
-//                    if (mediaItem.requestMetadata.searchQuery != null)
-//                        getMediaItemFromSearchQuery(mediaItem.requestMetadata.searchQuery!!)
-//                    else MediaItemTree.getItem(mediaItem.mediaId) ?: mediaItem
                 }
             return Futures.immediateFuture(updatedMediaItems)
-
-
-//            val updatedMediaItems = mediaItems.map { mediaItem ->
-//                mediaItem.buildUpon().apply {
-//                    setUri(mediaItem.requestMetadata.mediaUri)
-//                }.build()
-//            }
-//            return Futures.immediateFuture(updatedMediaItems)
         }
 
 
@@ -300,13 +369,13 @@ class PlayerService : MediaLibraryService() {
             session: MediaSession,
             controller: MediaSession.ControllerInfo
         ): MediaSession.ConnectionResult {
-            // add custom commands
             val connectionResult: MediaSession.ConnectionResult = super.onConnect(session, controller)
             val builder: SessionCommands.Builder = connectionResult.availableSessionCommands.buildUpon()
             builder.add(SessionCommand(Keys.CMD_START_SLEEP_TIMER, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_CANCEL_SLEEP_TIMER, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_REQUEST_SLEEP_TIMER_REMAINING, Bundle.EMPTY))
             builder.add(SessionCommand(Keys.CMD_REQUEST_METADATA_HISTORY, Bundle.EMPTY))
+            builder.add(SessionCommand(Keys.CMD_GET_VISUALIZER_DATA, Bundle.EMPTY))
             return MediaSession.ConnectionResult.accept(builder.build(), connectionResult.availablePlayerCommands)
         }
 
@@ -393,79 +462,23 @@ class PlayerService : MediaLibraryService() {
                         )
                     )
                 }
+                Keys.CMD_GET_VISUALIZER_DATA -> {
+                    val resultBundle = Bundle()
+                    resultBundle.putFloatArray(
+                        Keys.EXTRA_VISUALIZER_DATA,
+                        nativeAudioProcessor.getVisualizer()
+                    )
+                    return Futures.immediateFuture(
+                        SessionResult(
+                            SessionResult.RESULT_SUCCESS,
+                            resultBundle
+                        )
+                    )
+                }
             }
             return super.onCustomCommand(session, controller, customCommand, args)
         }
 
-        override fun onPlayerCommandRequest(
-            session: MediaSession,
-            controller: MediaSession.ControllerInfo,
-            playerCommand: Int
-        ): Int {
-            // playerCommand = one of COMMAND_PLAY_PAUSE, COMMAND_PREPARE, COMMAND_STOP, COMMAND_SEEK_TO_DEFAULT_POSITION, COMMAND_SEEK_IN_CURRENT_MEDIA_ITEM, COMMAND_SEEK_TO_PREVIOUS_MEDIA_ITEM, COMMAND_SEEK_TO_PREVIOUS, COMMAND_SEEK_TO_NEXT_MEDIA_ITEM, COMMAND_SEEK_TO_NEXT, COMMAND_SEEK_TO_MEDIA_ITEM, COMMAND_SEEK_BACK, COMMAND_SEEK_FORWARD, COMMAND_SET_SPEED_AND_PITCH, COMMAND_SET_SHUFFLE_MODE, COMMAND_SET_REPEAT_MODE, COMMAND_GET_CURRENT_MEDIA_ITEM, COMMAND_GET_TIMELINE, COMMAND_GET_MEDIA_ITEMS_METADATA, COMMAND_SET_MEDIA_ITEMS_METADATA, COMMAND_CHANGE_MEDIA_ITEMS, COMMAND_GET_AUDIO_ATTRIBUTES, COMMAND_GET_VOLUME, COMMAND_GET_DEVICE_VOLUME, COMMAND_SET_VOLUME, COMMAND_SET_DEVICE_VOLUME, COMMAND_ADJUST_DEVICE_VOLUME, COMMAND_SET_VIDEO_SURFACE, COMMAND_GET_TEXT, COMMAND_SET_TRACK_SELECTION_PARAMETERS or COMMAND_GET_TRACK_INFOS. */
-            // emulate headphone buttons
-            // start/pause: adb shell input keyevent 85
-            // next: adb shell input keyevent 87
-            // prev: adb shell input keyevent 88
-            when (playerCommand) {
-                Player.COMMAND_SEEK_TO_NEXT -> {
-                    player.addMediaItem(
-                        CollectionHelper.getNextMediaItem(
-                            this@PlayerService,
-                            collection,
-                            player.currentMediaItem?.mediaId ?: String()
-                        )
-                    )
-                    player.prepare()
-                    player.play()
-                    return SessionResult.RESULT_SUCCESS
-                }
-                Player.COMMAND_SEEK_TO_PREVIOUS -> {
-                    player.addMediaItem(
-                        CollectionHelper.getPreviousMediaItem(
-                            this@PlayerService,
-                            collection,
-                            player.currentMediaItem?.mediaId ?: String()
-                        )
-                    )
-                    player.prepare()
-                    player.play()
-                    return SessionResult.RESULT_SUCCESS
-                }
-                Player.COMMAND_PREPARE -> {
-                    return if (playLastStation) {
-                        // special case: system requested media resumption (see also onGetLibraryRoot)
-                        player.addMediaItem(CollectionHelper.getRecent(this@PlayerService, collection))
-                        player.prepare()
-                        playLastStation = false
-                        SessionResult.RESULT_SUCCESS
-                    } else {
-                        super.onPlayerCommandRequest(session, controller, playerCommand)
-                    }
-                }
-                Player.COMMAND_PLAY_PAUSE -> {
-                    return if (player.isPlaying) {
-                        super.onPlayerCommandRequest(session, controller, playerCommand)
-                    } else {
-                        // seek to the start of the "live window"
-                        player.seekTo(0)
-                        SessionResult.RESULT_SUCCESS
-                    }
-                }
-//                Player.COMMAND_PLAY_PAUSE -> {
-//                    // override pause with stop, to prevent unnecessary buffering
-//                    if (player.isPlaying) {
-//                        player.stop()
-//                        return SessionResult.RESULT_INFO_SKIPPED
-//                    } else {
-//                       return super.onPlayerCommandRequest(session, controller, playerCommand)
-//                    }
-//                }
-                else -> {
-                    return super.onPlayerCommandRequest(session, controller, playerCommand)
-                }
-            }
-        }
     }
 
 
@@ -480,21 +493,21 @@ class PlayerService : MediaLibraryService() {
             customLayout: ImmutableList<CommandButton>,
             showPauseButton: Boolean
         ): ImmutableList<CommandButton> {
-            val seekToPreviousCommandButton = CommandButton.Builder().apply {
-                setPlayerCommand(Player.COMMAND_SEEK_TO_PREVIOUS)
-                setIconResId(R.drawable.ic_notification_skip_to_previous_36dp)
-                setEnabled(true)
-            }.build()
-            val playCommandButton = CommandButton.Builder().apply {
-                setPlayerCommand(Player.COMMAND_PLAY_PAUSE)
-                setIconResId(if (player.isPlaying) R.drawable.ic_notification_stop_36dp else R.drawable.ic_notification_play_36dp)
-                setEnabled(true)
-            }.build()
-            val seekToNextCommandButton = CommandButton.Builder().apply {
-                setPlayerCommand(Player.COMMAND_SEEK_TO_NEXT)
-                setIconResId(R.drawable.ic_notification_skip_to_next_36dp)
-                setEnabled(true)
-            }.build()
+            val seekToPreviousCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
+                .setPlayerCommand(Player.COMMAND_SEEK_TO_PREVIOUS)
+                .setCustomIconResId(R.drawable.ic_notification_skip_to_previous_36dp)
+                .setEnabled(true)
+                .build()
+            val playCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
+                .setPlayerCommand(Player.COMMAND_PLAY_PAUSE)
+                .setCustomIconResId(if (player.isPlaying) R.drawable.ic_notification_stop_36dp else R.drawable.ic_notification_play_36dp)
+                .setEnabled(true)
+                .build()
+            val seekToNextCommandButton = CommandButton.Builder(CommandButton.ICON_UNDEFINED)
+                .setPlayerCommand(Player.COMMAND_SEEK_TO_NEXT)
+                .setCustomIconResId(R.drawable.ic_notification_skip_to_next_36dp)
+                .setEnabled(true)
+                .build()
             val commandButtons: MutableList<CommandButton> = mutableListOf(
                 seekToPreviousCommandButton,
                 playCommandButton,
@@ -526,37 +539,24 @@ class PlayerService : MediaLibraryService() {
                 currentMediaId,
                 isPlaying
             )
-            //updatePlayerState(station, playbackState)
 
-            if (isPlaying) {
-                // playback is active
-            } else {
+            if (!isPlaying) {
                 // cancel sleep timer
                 cancelSleepTimer()
                 // reset metadata
                 updateMetadata()
 
-                // playback is not active
-                // Not playing because playback is paused, ended, suppressed, or the player
-                // is buffering, stopped or failed. Check player.getPlayWhenReady,
-                // player.getPlaybackState, player.getPlaybackSuppressionReason and
-                // player.getPlaybackError for details.
+                // Check playback state to decide whether to stop the service
                 when (player.playbackState) {
-                    // player is able to immediately play from its current position
+                    Player.STATE_ENDED, Player.STATE_IDLE -> {
+                        stopSelf()
+                    }
                     Player.STATE_READY -> {
-                        // todo
+                        // Playback is paused. For radio, we can stop the service to remove the notification.
+                        stopSelf()
                     }
-                    // buffering - data needs to be loaded
                     Player.STATE_BUFFERING -> {
-                        // todo
-                    }
-                    // player finished playing all media
-                    Player.STATE_ENDED -> {
-                        // todo
-                    }
-                    // initial state or player is stopped or playback failed
-                    Player.STATE_IDLE -> {
-                        // todo
+                        // DO NOT stop the service while buffering (especially important for Cast)
                     }
                 }
             }
@@ -565,18 +565,9 @@ class PlayerService : MediaLibraryService() {
         override fun onPlayWhenReadyChanged(playWhenReady: Boolean, reason: Int) {
             super.onPlayWhenReadyChanged(playWhenReady, reason)
             if (!playWhenReady) {
-                when (reason) {
-                    Player.PLAY_WHEN_READY_CHANGE_REASON_END_OF_MEDIA_ITEM -> {
-                        // playback reached end: stop / end playback
-                    }
-                    else -> {
-                        // playback has been paused by user or OS: update media session and save state
-                        // PLAY_WHEN_READY_CHANGE_REASON_USER_REQUEST or
-                        // PLAY_WHEN_READY_CHANGE_REASON_AUDIO_FOCUS_LOSS or
-                        // PLAY_WHEN_READY_CHANGE_REASON_AUDIO_BECOMING_NOISY or
-                        // PLAY_WHEN_READY_CHANGE_REASON_REMOTE
-                        // handlePlaybackChange(PlaybackStateCompat.STATE_PAUSED)
-                    }
+                // Only stop if not buffering and not ready to play (i.e. truly stopped/paused)
+                if (player.playbackState != Player.STATE_BUFFERING) {
+                    stopSelf()
                 }
             }
         }
@@ -585,7 +576,10 @@ class PlayerService : MediaLibraryService() {
         override fun onPlayerError(error: PlaybackException) {
             super.onPlayerError(error)
             Log.d(TAG, "PlayerError occurred: ${error.errorCodeName}")
-            // todo: test if playback needs to be restarted
+            if (error.errorCode == PlaybackException.ERROR_CODE_IO_NETWORK_CONNECTION_FAILED || error.errorCode == PlaybackException.ERROR_CODE_IO_NETWORK_CONNECTION_TIMEOUT) {
+                player.prepare()
+                player.play()
+            }
         }
 
 
@@ -598,17 +592,13 @@ class PlayerService : MediaLibraryService() {
 
 
     /*
-     * Custom LoadErrorHandlingPolicy that network drop outs
+     * Custom LoadErrorHandlingPolicy that network drop-outs
      */
     private val loadErrorHandlingPolicy: DefaultLoadErrorHandlingPolicy = object: DefaultLoadErrorHandlingPolicy()  {
         override fun getRetryDelayMsFor(loadErrorInfo: LoadErrorHandlingPolicy.LoadErrorInfo): Long {
             // try to reconnect every 5 seconds - up to 20 times
             if (loadErrorInfo.errorCount <= Keys.DEFAULT_MAX_RECONNECTION_COUNT && loadErrorInfo.exception is HttpDataSource.HttpDataSourceException) {
                 return Keys.RECONNECTION_WAIT_INTERVAL
-//            } else {
-//                CoroutineScope(Main).launch {
-//                    player.stop()
-//                }
             }
             return C.TIME_UNSET
         }
@@ -636,22 +626,6 @@ class PlayerService : MediaLibraryService() {
     }
 
 
-    /*
-    * Defines the listener for changes in shared preferences
-    */
-    private val sharedPreferenceChangeListener =
-        SharedPreferences.OnSharedPreferenceChangeListener { _, key ->
-            when (key) {
-                Keys.PREF_LARGE_BUFFER_SIZE -> {
-                    bufferSizeMultiplier = PreferencesHelper.loadBufferSizeMultiplier()
-                    if (!player.isPlaying && !player.isLoading) {
-                        initializePlayer()
-                    }
-                }
-            }
-        }
-
-
     /*
      * Custom AnalyticsListener that enables AudioFX equalizer integration
      */
@@ -667,7 +641,6 @@ class PlayerService : MediaLibraryService() {
             intent.putExtra(AudioEffect.EXTRA_PACKAGE_NAME, packageName)
             intent.putExtra(AudioEffect.EXTRA_CONTENT_TYPE, AudioEffect.CONTENT_TYPE_MUSIC)
             sendBroadcast(intent)
-            // note: remember to broadcast AudioEffect.ACTION_CLOSE_AUDIO_EFFECT_CONTROL_SESSION, when not needed anymore
         }
     }
 }

app/src/main/java/com/michatec/radio/Radio.kt

@@ -1,17 +1,3 @@
-/*
- * Radio.kt
- * Implements the Radio class
- * Radio is the base Application class that sets up day and night theme
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Application
@@ -25,8 +11,6 @@ import com.michatec.radio.helpers.PreferencesHelper.initPreferences
  */
 class Radio : Application() {
 
-    /* Define log tag */
-    private val TAG: String = Radio::class.java.simpleName
 
     /* Implements onCreate */
     override fun onCreate() {
@@ -36,10 +20,4 @@ class Radio : Application() {
         AppThemeHelper.setTheme(PreferencesHelper.loadThemeSelection())
     }
 
-
-    /* Implements onTerminate */
-    override fun onTerminate() {
-        super.onTerminate()
-    }
-
 }

app/src/main/java/com/michatec/radio/SettingsFragment.kt

@@ -1,17 +1,3 @@
-/*
- * SettingsFragment.kt
- * Implements the SettingsFragment fragment
- * A SettingsFragment displays the user accessible settings of the app
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio
 
 import android.app.Activity
@@ -20,24 +6,21 @@ import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
 import android.net.Uri
-import android.os.Build
 import android.os.Bundle
 import android.util.Log
 import android.view.View
 import androidx.activity.result.ActivityResult
 import androidx.activity.result.contract.ActivityResultContracts.StartActivityForResult
 import androidx.appcompat.app.AppCompatActivity
-import androidx.appcompat.app.AppCompatDelegate
-import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
-import androidx.core.os.bundleOf
 import androidx.navigation.fragment.findNavController
 import androidx.preference.*
 import com.google.android.material.snackbar.Snackbar
 import com.michatec.radio.dialogs.ErrorDialog
+import com.michatec.radio.dialogs.PresetSelectionDialog
+import com.michatec.radio.dialogs.ThemeSelectionDialog
 import com.michatec.radio.dialogs.YesNoDialog
 import com.michatec.radio.helpers.*
-import com.michatec.radio.helpers.AppThemeHelper.getColor
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers.IO
 import kotlinx.coroutines.launch
@@ -48,7 +31,7 @@ import java.util.*
 /*
  * SettingsFragment class
  */
-class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogListener {
+class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogListener, ThemeSelectionDialog.ThemeSelectionDialogListener, PresetSelectionDialog.PresetSelectionDialogListener {
 
 
     /* Define log tag */
@@ -62,20 +45,6 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         (activity as AppCompatActivity).supportActionBar?.show()
         (activity as AppCompatActivity).supportActionBar?.setDisplayHomeAsUpEnabled(true)
         (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.fragment_settings_title)
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            // above Android Oreo
-            (activity as AppCompatActivity).window.navigationBarColor = getColor(requireContext(), android.R.attr.colorBackground)
-        } else {
-            val nightMode = AppCompatDelegate.getDefaultNightMode()
-            if (nightMode == AppCompatDelegate.MODE_NIGHT_YES) {
-                // night mode is active, set navigation bar color to a suitable color for night mode
-                (activity as AppCompatActivity).window.navigationBarColor = getColor(requireContext(), android.R.attr.colorBackground)
-            } else {
-                // night mode is not active, set navigation bar color to a suitable color for day mode
-                (activity as AppCompatActivity).window.navigationBarColor = ContextCompat.getColor(requireContext(), android.R.color.black)
-            }
-        }
     }
 
     /* Overrides onCreatePreferences from PreferenceFragmentCompat */
@@ -84,34 +53,21 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         val context = preferenceManager.context
         val screen = preferenceManager.createPreferenceScreen(context)
 
+        // Load current preset once
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+
         // set up "App Theme" preference
-        val preferenceThemeSelection = ListPreference(activity as Context)
+        val preferenceThemeSelection = Preference(activity as Context)
         preferenceThemeSelection.title = getString(R.string.pref_theme_selection_title)
         preferenceThemeSelection.setIcon(R.drawable.ic_brush_24dp)
         preferenceThemeSelection.key = Keys.PREF_THEME_SELECTION
         preferenceThemeSelection.summary = "${getString(R.string.pref_theme_selection_summary)} ${
             AppThemeHelper.getCurrentTheme(activity as Context)
         }"
-        preferenceThemeSelection.entries = arrayOf(
-            getString(R.string.pref_theme_selection_mode_device_default),
-            getString(R.string.pref_theme_selection_mode_light),
-            getString(R.string.pref_theme_selection_mode_dark)
-        )
-        preferenceThemeSelection.entryValues = arrayOf(
-            Keys.STATE_THEME_FOLLOW_SYSTEM,
-            Keys.STATE_THEME_LIGHT_MODE,
-            Keys.STATE_THEME_DARK_MODE
-        )
-        preferenceThemeSelection.setDefaultValue(Keys.STATE_THEME_FOLLOW_SYSTEM)
-        preferenceThemeSelection.setOnPreferenceChangeListener { preference, newValue ->
-            if (preference is ListPreference) {
-                val index: Int = preference.entryValues.indexOf(newValue)
-                preferenceThemeSelection.summary =
-                    "${getString(R.string.pref_theme_selection_summary)} ${preference.entries[index]}"
-                return@setOnPreferenceChangeListener true
-            } else {
-                return@setOnPreferenceChangeListener false
-            }
+        preferenceThemeSelection.setOnPreferenceClickListener {
+            // show theme selection dialog
+            ThemeSelectionDialog(this).show(activity as Context)
+            return@setOnPreferenceClickListener true
         }
 
         // set up "Update Station Images" preference
@@ -130,17 +86,21 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             return@setOnPreferenceClickListener true
         }
 
-
-//        // set up "Update Stations" preference
-//        val preferenceUpdateCollection: Preference = Preference(activity as Context)
-//        preferenceUpdateCollection.title = getString(R.string.pref_update_collection_title)
-//        preferenceUpdateCollection.setIcon(R.drawable.ic_refresh_24dp)
-//        preferenceUpdateCollection.summary = getString(R.string.pref_update_collection_summary)
-//        preferenceUpdateCollection.setOnPreferenceClickListener {
-//            // show dialog
-//            YesNoDialog(this).show(context = activity as Context, type = Keys.DIALOG_UPDATE_COLLECTION, message = R.string.dialog_yes_no_message_update_collection, yesButton = R.string.dialog_yes_no_positive_button_update_collection)
-//            return@setOnPreferenceClickListener true
-//        }
+        // set up "Update Stations" preference
+        val preferenceUpdateCollection = Preference(activity as Context)
+        preferenceUpdateCollection.title = getString(R.string.pref_update_collection_title)
+        preferenceUpdateCollection.setIcon(R.drawable.ic_refresh_24dp)
+        preferenceUpdateCollection.summary = getString(R.string.pref_update_collection_summary)
+        preferenceUpdateCollection.setOnPreferenceClickListener {
+            // show dialog
+            YesNoDialog(this).show(
+                context = activity as Context,
+                type = Keys.DIALOG_UPDATE_COLLECTION,
+                message = R.string.dialog_yes_no_message_update_collection,
+                yesButton = R.string.dialog_yes_no_positive_button_update_collection,
+            )
+            return@setOnPreferenceClickListener true
+        }
 
 
         // set up "M3U Export" preference
@@ -204,7 +164,8 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         preferenceEnableEditingStreamUri.key = Keys.PREF_EDIT_STREAMS_URIS
         preferenceEnableEditingStreamUri.summaryOn = getString(R.string.pref_edit_station_stream_summary_enabled)
         preferenceEnableEditingStreamUri.summaryOff = getString(R.string.pref_edit_station_stream_summary_disabled)
-        preferenceEnableEditingStreamUri.setDefaultValue(PreferencesHelper.loadEditStreamUrisEnabled())
+        preferenceEnableEditingStreamUri.setDefaultValue(PreferencesHelper.loadEditStreamUrisEnabled(context))
+        preferenceEnableEditingStreamUri.isEnabled = PreferencesHelper.loadEditStreamUrisEnabled(context)
 
 
         // set up "Edit Stations" preference
@@ -214,7 +175,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         preferenceEnableEditingGeneral.key = Keys.PREF_EDIT_STATIONS
         preferenceEnableEditingGeneral.summaryOn = getString(R.string.pref_edit_station_summary_enabled)
         preferenceEnableEditingGeneral.summaryOff = getString(R.string.pref_edit_station_summary_disabled)
-        preferenceEnableEditingGeneral.setDefaultValue(PreferencesHelper.loadEditStationsEnabled())
+        preferenceEnableEditingGeneral.setDefaultValue(PreferencesHelper.loadEditStationsEnabled(context))
         preferenceEnableEditingGeneral.setOnPreferenceChangeListener { _, newValue ->
             when (newValue) {
                 true -> {
@@ -228,6 +189,75 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             return@setOnPreferenceChangeListener true
         }
 
+        // set up "Bass Boost" preference
+        val preferenceBassBoost = MarqueeSwitchPreference(context)
+        preferenceBassBoost.title = getString(R.string.pref_bass_boost_title)
+        preferenceBassBoost.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceBassBoost.key = Keys.PREF_BASS_BOOST
+        preferenceBassBoost.isEnabled = currentPreset.isEmpty()
+        preferenceBassBoost.summary = getString(R.string.pref_bass_boost_summary)
+        preferenceBassBoost.setDefaultValue(false)
+
+        // set up "Reverb" preference
+        val preferenceReverb = MarqueeSwitchPreference(context)
+        preferenceReverb.title = getString(R.string.pref_reverb_title)
+        preferenceReverb.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceReverb.key = Keys.PREF_REVERB
+        preferenceReverb.isEnabled = currentPreset.isEmpty()
+        preferenceReverb.summary = getString(R.string.pref_reverb_summary)
+        preferenceReverb.setDefaultValue(false)
+
+        // set up "DRC" preference
+        val preferenceDrc = MarqueeSwitchPreference(context)
+        preferenceDrc.title = getString(R.string.pref_drc_title)
+        preferenceDrc.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceDrc.key = Keys.PREF_DRC
+        preferenceDrc.isEnabled = currentPreset.isEmpty()
+        preferenceDrc.summary = getString(R.string.pref_drc_summary)
+        preferenceDrc.setDefaultValue(true)
+
+        // set up "Preset Selection" preference
+        val preferencePresetSelection = Preference(context)
+        preferencePresetSelection.title = getString(R.string.pref_preset_selection_title)
+        preferencePresetSelection.setIcon(R.drawable.ic_music_note_24dp)
+        preferencePresetSelection.key = Keys.PREF_PRESET_SELECTED
+        val presetSummary = currentPreset.ifEmpty {
+            getString(R.string.pref_preset_none)
+        }
+        preferencePresetSelection.summary = "${getString(R.string.pref_preset_selection_summary)}: $presetSummary"
+        preferencePresetSelection.setOnPreferenceClickListener {
+            PresetSelectionDialog(this).show(activity as Context)
+            return@setOnPreferenceClickListener true
+        }
+
+        // Initialize EQ control states based on current preset
+        updateEqControlStates()
+
+        // set up "Equalizer" preference entry
+        val preferenceEqualizer = Preference(context)
+        preferenceEqualizer.title = getString(R.string.pref_equalizer_title)
+        preferenceEqualizer.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceEqualizer.key = Keys.PREF_EQUALIZER
+        if (currentPreset.isEmpty()) {
+            preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary)
+            preferenceEqualizer.isEnabled = true
+        } else {
+            preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary_off)
+            preferenceEqualizer.isEnabled = false
+        }
+        preferenceEqualizer.setOnPreferenceClickListener {
+            findNavController().navigate(R.id.action_settings_to_equalizer)
+            return@setOnPreferenceClickListener true
+        }
+
+        val preferenceVisualizer = Preference(context)
+        preferenceVisualizer.title = getString(R.string.pref_visualizer_title)
+        preferenceVisualizer.setIcon(R.drawable.ic_music_note_24dp)
+        preferenceVisualizer.summary = getString(R.string.pref_visualizer_summary)
+        preferenceVisualizer.setOnPreferenceClickListener {
+            findNavController().navigate(R.id.action_settings_to_visualizer)
+            return@setOnPreferenceClickListener true
+        }
 
         // set up "App Version" preference
         val preferenceAppVersion = Preference(context)
@@ -239,10 +269,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             val clip: ClipData = ClipData.newPlainText("simple text", preferenceAppVersion.summary)
             val cm: ClipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
             cm.setPrimaryClip(clip)
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.TIRAMISU) {
-                // since API 33 (TIRAMISU) the OS displays its own notification when content is copied to the clipboard
-                Snackbar.make(requireView(), R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
-            }
+            Snackbar.make(requireView(), R.string.toastmessage_copied_to_clipboard, Snackbar.LENGTH_LONG).show()
             return@setOnPreferenceClickListener true
         }
 
@@ -281,54 +308,122 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
         // set preference categories
         val preferenceCategoryGeneral = PreferenceCategory(activity as Context)
         preferenceCategoryGeneral.title = getString(R.string.pref_general_title)
-        preferenceCategoryGeneral.contains(preferenceThemeSelection)
+
+        val preferenceCategoryAudioEffects = PreferenceCategory(context)
+        preferenceCategoryAudioEffects.title = getString(R.string.pref_audio_effects_title)
 
         val preferenceCategoryMaintenance = PreferenceCategory(activity as Context)
         preferenceCategoryMaintenance.title = getString(R.string.pref_maintenance_title)
-        preferenceCategoryMaintenance.contains(preferenceUpdateStationImages)
-//        preferenceCategoryMaintenance.contains(preferenceUpdateCollection)
 
         val preferenceCategoryImportExport = PreferenceCategory(activity as Context)
         preferenceCategoryImportExport.title = getString(R.string.pref_backup_import_export_title)
-        preferenceCategoryImportExport.contains(preferenceM3uExport)
-        preferenceCategoryImportExport.contains(preferencePlsExport)
-        preferenceCategoryImportExport.contains(preferenceBackupCollection)
-        preferenceCategoryImportExport.contains(preferenceRestoreCollection)
 
         val preferenceCategoryAdvanced = PreferenceCategory(activity as Context)
         preferenceCategoryAdvanced.title = getString(R.string.pref_advanced_title)
-        preferenceCategoryAdvanced.contains(preferenceBufferSize)
-        preferenceCategoryAdvanced.contains(preferenceEnableEditingGeneral)
-        preferenceCategoryAdvanced.contains(preferenceEnableEditingStreamUri)
 
         val preferenceCategoryLinks = PreferenceCategory(context)
         preferenceCategoryLinks.title = getString(R.string.pref_links_title)
-        preferenceCategoryLinks.contains(preferenceAppVersion)
-        preferenceCategoryLinks.contains(preferenceGitHub)
 
 
         // setup preference screen
         screen.addPreference(preferenceAppVersion)
-        screen.addPreference(preferenceLicense)
+
         screen.addPreference(preferenceCategoryGeneral)
-        screen.addPreference(preferenceThemeSelection)
+        preferenceCategoryGeneral.addPreference(preferenceThemeSelection)
+
+        screen.addPreference(preferenceCategoryAudioEffects)
+        preferenceCategoryAudioEffects.addPreference(preferenceBassBoost)
+        preferenceCategoryAudioEffects.addPreference(preferenceReverb)
+        preferenceCategoryAudioEffects.addPreference(preferenceDrc)
+        preferenceCategoryAudioEffects.addPreference(preferencePresetSelection)
+        preferenceCategoryAudioEffects.addPreference(preferenceEqualizer)
+        preferenceCategoryAudioEffects.addPreference(preferenceVisualizer)
+
         screen.addPreference(preferenceCategoryMaintenance)
-        screen.addPreference(preferenceUpdateStationImages)
-//        screen.addPreference(preferenceUpdateCollection)
+        preferenceCategoryMaintenance.addPreference(preferenceUpdateStationImages)
+        preferenceCategoryMaintenance.addPreference(preferenceUpdateCollection)
+
         screen.addPreference(preferenceCategoryImportExport)
-        screen.addPreference(preferenceM3uExport)
-        screen.addPreference(preferencePlsExport)
-        screen.addPreference(preferenceBackupCollection)
-        screen.addPreference(preferenceRestoreCollection)
+        preferenceCategoryImportExport.addPreference(preferenceM3uExport)
+        preferenceCategoryImportExport.addPreference(preferencePlsExport)
+        preferenceCategoryImportExport.addPreference(preferenceBackupCollection)
+        preferenceCategoryImportExport.addPreference(preferenceRestoreCollection)
+
         screen.addPreference(preferenceCategoryAdvanced)
-        screen.addPreference(preferenceBufferSize)
-        screen.addPreference(preferenceEnableEditingGeneral)
-        screen.addPreference(preferenceEnableEditingStreamUri)
+        preferenceCategoryAdvanced.addPreference(preferenceBufferSize)
+        preferenceCategoryAdvanced.addPreference(preferenceEnableEditingGeneral)
+        preferenceCategoryAdvanced.addPreference(preferenceEnableEditingStreamUri)
+
         screen.addPreference(preferenceCategoryLinks)
-        screen.addPreference(preferenceGitHub)
+        preferenceCategoryLinks.addPreference(preferenceGitHub)
+        preferenceCategoryLinks.addPreference(preferenceLicense)
+
         preferenceScreen = screen
     }
 
+    /* Overrides onThemeSelectionDialog from ThemeSelectionDialogListener */
+    override fun onThemeSelectionDialog(dialogResult: Boolean, selectedTheme: String) {
+        if (dialogResult) {
+            // update summary
+            val themes = arrayOf(
+                getString(R.string.pref_theme_selection_mode_device_default),
+                getString(R.string.pref_theme_selection_mode_light),
+                getString(R.string.pref_theme_selection_mode_dark)
+            )
+            val themeValues = arrayOf(
+                Keys.STATE_THEME_FOLLOW_SYSTEM,
+                Keys.STATE_THEME_LIGHT_MODE,
+                Keys.STATE_THEME_DARK_MODE
+            )
+            val index = themeValues.indexOf(selectedTheme)
+            val preferenceThemeSelection = findPreference<Preference>(Keys.PREF_THEME_SELECTION)
+            preferenceThemeSelection?.summary = "${getString(R.string.pref_theme_selection_summary)} ${themes[index]}"
+        }
+    }
+
+
+    /* Overrides onPresetSelectionDialog from PresetSelectionDialogListener */
+    override fun onPresetSelectionDialog(dialogResult: Boolean, selectedPreset: String) {
+        if (dialogResult) {
+            // update summary
+            val presetPreference = findPreference<Preference>(Keys.PREF_PRESET_SELECTED)
+            val presetSummary = selectedPreset.ifEmpty {
+                getString(R.string.pref_preset_none)
+            }
+            presetPreference?.summary = "${getString(R.string.pref_preset_selection_summary)}: $presetSummary"
+
+            // Enable/disable manual EQ controls based on preset selection
+            updateEqControlStates()
+        }
+    }
+
+    /* Updates the enabled/disabled state of EQ controls based on preset selection */
+    private fun updateEqControlStates() {
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+        val isPresetSelected = currentPreset.isNotEmpty()
+
+        // Update Bass Boost
+        findPreference<Preference>(Keys.PREF_BASS_BOOST)?.isEnabled = !isPresetSelected
+
+        // Update Reverb
+        findPreference<Preference>(Keys.PREF_REVERB)?.isEnabled = !isPresetSelected
+
+        // Update DRC
+        findPreference<Preference>(Keys.PREF_DRC)?.isEnabled = !isPresetSelected
+
+        // Update Equalizer with proper key
+        val preferenceEqualizer = findPreference<Preference>(Keys.PREF_EQUALIZER)
+        if (preferenceEqualizer != null) {
+            if (isPresetSelected) {
+                preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary_off)
+                preferenceEqualizer.isEnabled = false
+            } else {
+                preferenceEqualizer.summary = getString(R.string.pref_equalizer_summary)
+                preferenceEqualizer.isEnabled = true
+            }
+        }
+    }
+
 
     /* Overrides onYesNoDialog from YesNoDialogListener */
     override fun onYesNoDialog(
@@ -437,9 +532,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             val sourceUri: Uri? = result.data?.data
             if (sourceUri != null) {
                 // open and import OPML in player fragment
-                val bundle: Bundle = bundleOf(
-                    Keys.ARG_RESTORE_COLLECTION to "$sourceUri"
-                )
+                val bundle = Bundle().apply {
+                    putString(Keys.ARG_RESTORE_COLLECTION, "$sourceUri")
+                }
                 this.findNavController().navigate(R.id.player_destination, bundle)
             }
         }
@@ -455,7 +550,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
                 Snackbar.LENGTH_LONG
             ).show()
             // update collection in player screen
-            val bundle: Bundle = bundleOf(Keys.ARG_UPDATE_COLLECTION to true)
+            val bundle = Bundle().apply {
+                putBoolean(Keys.ARG_UPDATE_COLLECTION, true)
+            }
             this.findNavController().navigate(R.id.player_destination, bundle)
         } else {
             ErrorDialog().show(
@@ -476,9 +573,9 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
                 Snackbar.LENGTH_LONG
             ).show()
             // update collection in player screen
-            val bundle: Bundle = bundleOf(
-                Keys.ARG_UPDATE_IMAGES to true
-            )
+            val bundle = Bundle().apply {
+                putBoolean(Keys.ARG_UPDATE_IMAGES, true)
+            }
             this.findNavController().navigate(R.id.player_destination, bundle)
         } else {
             ErrorDialog().show(
@@ -512,28 +609,6 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
     }
 
 
-    /* Opens up a file picker to select the save location */
-    private fun openSavePlsDialog() {
-        val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
-            addCategory(Intent.CATEGORY_OPENABLE)
-            type = Keys.MIME_TYPE_PLS
-
-            val timeStamp: String
-            val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
-            timeStamp = dateFormat.format(Date())
-
-            putExtra(Intent.EXTRA_TITLE, "collection$timeStamp.pls")
-        }
-        // file gets saved in the ActivityResult
-        try {
-            requestSavePlsLauncher.launch(intent)
-        } catch (exception: Exception) {
-            Log.e(TAG, "Unable to save PLS.\n$exception")
-            Snackbar.make(requireView(), R.string.toastmessage_install_file_helper, Snackbar.LENGTH_LONG).show()
-        }
-    }
-
-
     /* Opens up a file picker to select the backup location */
     private fun openBackupCollectionDialog() {
         val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
@@ -544,7 +619,7 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
             timeStamp = dateFormat.format(Date())
 
-            putExtra(Intent.EXTRA_TITLE, "URL_Radio$timeStamp.zip")
+            putExtra(Intent.EXTRA_TITLE, "Radio$timeStamp.zip")
         }
         // file gets saved in the ActivityResult
         try {
@@ -568,7 +643,26 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             requestRestoreCollectionLauncher.launch(intent)
         } catch (exception: Exception) {
             Log.e(TAG, "Unable to open file picker for ZIP.\n$exception")
-            // Toast.makeText(activity as Context, R.string.toast_message_install_file_helper, Toast.LENGTH_LONG).show()
+        }
+    }
+
+    private fun openSavePlsDialog() {
+        val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = Keys.MIME_TYPE_PLS
+
+            val timeStamp: String
+            val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
+            timeStamp = dateFormat.format(Date())
+
+            putExtra(Intent.EXTRA_TITLE, "collection$timeStamp.pls")
+        }
+        // file gets saved in the ActivityResult
+        try {
+            requestSavePlsLauncher.launch(intent)
+        } catch (exception: Exception) {
+            Log.e(TAG, "Unable to save PLS.\n$exception")
+            Snackbar.make(requireView(), R.string.toastmessage_install_file_helper, Snackbar.LENGTH_LONG).show()
         }
     }
 }

app/src/main/java/com/michatec/radio/VisualizerFragment.kt

@@ -0,0 +1,122 @@
+package com.michatec.radio
+
+import android.content.ComponentName
+import android.os.Bundle
+import android.os.Handler
+import android.os.Looper
+import android.util.Log
+import android.view.View
+import androidx.annotation.OptIn
+import androidx.appcompat.app.AppCompatActivity
+import androidx.media3.common.util.UnstableApi
+import androidx.media3.session.MediaController
+import androidx.media3.session.SessionToken
+import androidx.preference.PreferenceFragmentCompat
+import com.google.common.util.concurrent.ListenableFuture
+import com.google.common.util.concurrent.MoreExecutors
+import com.michatec.radio.extensions.requestVisualizerData
+import com.michatec.radio.helpers.ExtrasHelper
+
+/*
+ * VisualizerFragment class: Handles audio visualization
+ */
+@OptIn(UnstableApi::class)
+class VisualizerFragment : PreferenceFragmentCompat() {
+
+    private val TAG = "VisualizerFragment"
+    private lateinit var controllerFuture: ListenableFuture<MediaController>
+    private val controller: MediaController?
+        get() = if (this::controllerFuture.isInitialized && controllerFuture.isDone) {
+            try { controllerFuture.get() } catch (_: Exception) { null }
+        } else null
+
+    private var visualizerPref: ExtrasHelper.VisualizerPreference? = null
+    private val handler = Handler(Looper.getMainLooper())
+
+    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
+        super.onViewCreated(view, savedInstanceState)
+        (activity as AppCompatActivity).supportActionBar?.title = getString(R.string.pref_visualizer_title)
+        (activity as AppCompatActivity).supportActionBar?.show()
+    }
+
+    override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
+        val context = preferenceManager.context
+        val screen = preferenceManager.createPreferenceScreen(context)
+        
+        visualizerPref = ExtrasHelper.VisualizerPreference(context)
+        visualizerPref?.key = "visualizer_key"
+        screen.addPreference(visualizerPref!!)
+
+        preferenceScreen = screen
+    }
+
+    override fun onStart() {
+        super.onStart()
+        initializeController()
+    }
+
+    override fun onStop() {
+        super.onStop()
+        releaseController()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        startPolling()
+    }
+
+    override fun onPause() {
+        super.onPause()
+        stopPolling()
+    }
+
+    private fun initializeController() {
+        controllerFuture = MediaController.Builder(
+            requireContext(),
+            SessionToken(requireContext(), ComponentName(requireContext(), PlayerService::class.java))
+        ).buildAsync()
+        controllerFuture.addListener({
+            Log.d(TAG, "MediaController connected: ${controller != null}")
+        }, MoreExecutors.directExecutor())
+    }
+
+    private fun releaseController() {
+        if (this::controllerFuture.isInitialized) {
+            MediaController.releaseFuture(controllerFuture)
+        }
+    }
+
+    private val pollRunnable = object : Runnable {
+        override fun run() {
+            val c = controller
+            if (c != null && c.isPlaying) {
+                val resultFuture = c.requestVisualizerData()
+                resultFuture.addListener({
+                    try {
+                        val result = resultFuture.get()
+                        if (result.resultCode == androidx.media3.session.SessionResult.RESULT_SUCCESS) {
+                            val data = result.extras.getFloatArray(Keys.EXTRA_VISUALIZER_DATA)
+                            if (data != null && data.isNotEmpty()) {
+                                visualizerPref?.update(data)
+                            }
+                        } else {
+                            Log.e(TAG, "Custom command failed with result code: ${result.resultCode}")
+                        }
+                    } catch (e: Exception) {
+                        Log.e(TAG, "Error fetching visualizer data", e)
+                    }
+                }, MoreExecutors.directExecutor())
+            }
+            handler.postDelayed(this, 18) // ~60 FPS
+        }
+    }
+
+    private fun startPolling() {
+        handler.removeCallbacks(pollRunnable)
+        handler.post(pollRunnable)
+    }
+
+    private fun stopPolling() {
+        handler.removeCallbacks(pollRunnable)
+    }
+}

app/src/main/java/com/michatec/radio/collection/CollectionAdapter.kt

@@ -1,33 +1,22 @@
-/*
- * CollectionAdapter.kt
- * Implements the CollectionAdapter class
- * A CollectionAdapter is a custom adapter providing station card views for a RecyclerView
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.collection
 
 import android.annotation.SuppressLint
 import android.content.Context
 import android.content.SharedPreferences
+import android.content.res.ColorStateList
 import android.text.Editable
 import android.text.TextWatcher
+import android.view.KeyEvent
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.view.inputmethod.EditorInfo
 import android.widget.ImageView
+import android.widget.ProgressBar
 import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
-import androidx.cardview.widget.CardView
 import androidx.constraintlayout.widget.Group
+import androidx.core.content.ContextCompat
 import androidx.core.net.toUri
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
@@ -37,6 +26,7 @@ import androidx.navigation.findNavController
 import androidx.recyclerview.widget.DiffUtil
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.button.MaterialButton
+import com.google.android.material.card.MaterialCardView
 import com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
 import com.google.android.material.textfield.TextInputEditText
 import com.michatec.radio.Keys
@@ -61,11 +51,12 @@ class CollectionAdapter(
     /* Main class variables */
     private lateinit var collectionViewModel: CollectionViewModel
     private var collection: Collection = Collection()
-    private var editStationsEnabled: Boolean = PreferencesHelper.loadEditStationsEnabled()
-    private var editStationStreamsEnabled: Boolean = PreferencesHelper.loadEditStreamUrisEnabled()
+    private var editStationsEnabled: Boolean = PreferencesHelper.loadEditStationsEnabled(context)
+    private var editStationStreamsEnabled: Boolean = PreferencesHelper.loadEditStreamUrisEnabled(context)
     private var expandedStationUuid: String = PreferencesHelper.loadStationListStreamUuid()
     private var expandedStationPosition: Int = -1
     var isExpandedForEdit: Boolean = false
+    private var reorderStationUuid: String = ""
 
 
     /* Listener Interface */
@@ -178,6 +169,9 @@ class CollectionAdapter(
                 addNewViewHolder.settingsButtonView.setOnClickListener {
                     it.findNavController().navigate(R.id.settings_destination)
                 }
+                addNewViewHolder.visualizerButtonView.setOnClickListener {
+                    it.findNavController().navigate(R.id.visualizer_destination)
+                }
             }
             // CASE STATION CARD
             is StationViewHolder -> {
@@ -193,6 +187,19 @@ class CollectionAdapter(
                 setStationImage(stationViewHolder, station)
                 setStationButtons(stationViewHolder, station)
                 setEditViews(stationViewHolder, station)
+                setPlaybackProgress(stationViewHolder, station)
+                setDownloadProgress(stationViewHolder, station)
+
+                stationViewHolder.playButtonView.isGone = true
+
+                // highlight if reordering
+                if (reorderStationUuid == station.uuid) {
+                    stationViewHolder.stationCardView.setStrokeColor(
+                        ColorStateList.valueOf(
+                            ContextCompat.getColor(context, R.color.cardview_reordering)
+                        )
+                    )
+                }
 
                 // show / hide edit views
                 when (expandedStationPosition) {
@@ -211,6 +218,8 @@ class CollectionAdapter(
                             stationViewHolder.stationNameEditView.imeOptions =
                                 EditorInfo.IME_ACTION_DONE
                         }
+                        // Allow internal focus
+                        stationViewHolder.stationCardView.descendantFocusability = ViewGroup.FOCUS_AFTER_DESCENDANTS
                     }
                     // hide edit views
                     else -> {
@@ -219,6 +228,8 @@ class CollectionAdapter(
                         stationViewHolder.stationStarredView.isVisible = station.starred
                         stationViewHolder.editViews.isGone = true
                         stationViewHolder.stationUriEditView.isGone = true
+                        // Block internal focus
+                        stationViewHolder.stationCardView.descendantFocusability = ViewGroup.FOCUS_BLOCK_DESCENDANTS
                     }
                 }
             }
@@ -248,6 +259,28 @@ class CollectionAdapter(
     }
 
 
+    /* Sets the playback progress view */
+    private fun setPlaybackProgress(stationViewHolder: StationViewHolder, station: Station) {
+        if (station.bufferingProgress > 0) {
+            stationViewHolder.bufferingProgress.progress = station.bufferingProgress
+            stationViewHolder.bufferingProgress.isVisible = true
+        } else {
+            stationViewHolder.bufferingProgress.isGone = true
+        }
+    }
+
+
+    /* Sets the download progress view */
+    private fun setDownloadProgress(stationViewHolder: StationViewHolder, station: Station) {
+        if (station.downloadProgress > 0) {
+            stationViewHolder.downloadProgress.progress = station.downloadProgress
+            stationViewHolder.downloadProgress.isVisible = true
+        } else {
+            stationViewHolder.downloadProgress.isGone = true
+        }
+    }
+
+
     /* Sets the edit views */
     private fun setEditViews(stationViewHolder: StationViewHolder, station: Station) {
         stationViewHolder.stationNameEditView.setText(station.name, TextView.BufferType.EDITABLE)
@@ -264,12 +297,12 @@ class CollectionAdapter(
             override fun onTextChanged(s: CharSequence?, start: Int, before: Int, count: Int) {}
         })
         stationViewHolder.cancelButton.setOnClickListener {
-            val position: Int = stationViewHolder.adapterPosition
+            val position: Int = stationViewHolder.bindingAdapterPosition
             toggleEditViews(position, station.uuid)
             UiHelper.hideSoftKeyboard(context, stationViewHolder.stationNameEditView)
         }
         stationViewHolder.saveButton.setOnClickListener {
-            val position: Int = stationViewHolder.adapterPosition
+            val position: Int = stationViewHolder.bindingAdapterPosition
             toggleEditViews(position, station.uuid)
             saveStation(
                 station,
@@ -280,22 +313,38 @@ class CollectionAdapter(
             UiHelper.hideSoftKeyboard(context, stationViewHolder.stationNameEditView)
         }
         stationViewHolder.placeOnHomeScreenButton.setOnClickListener {
-            val position: Int = stationViewHolder.adapterPosition
+            val position: Int = stationViewHolder.bindingAdapterPosition
             ShortcutHelper.placeShortcut(context, station)
             toggleEditViews(position, station.uuid)
             UiHelper.hideSoftKeyboard(context, stationViewHolder.stationNameEditView)
         }
         stationViewHolder.stationImageChangeView.setOnClickListener {
-            val position: Int = stationViewHolder.adapterPosition
+            val position: Int = stationViewHolder.bindingAdapterPosition
             collectionAdapterListener.onChangeImageButtonTapped(station.uuid)
-            stationViewHolder.adapterPosition
+            stationViewHolder.bindingAdapterPosition
             toggleEditViews(position, station.uuid)
             UiHelper.hideSoftKeyboard(context, stationViewHolder.stationNameEditView)
         }
     }
 
+    /* Shows / hides the reorder highlight for a station */
+    private fun toggleReorderMode(position: Int, stationUuid: String) {
+        if (reorderStationUuid == stationUuid) {
+            reorderStationUuid = ""
+            saveCollectionAfterDragDrop()
+        } else {
+            // collapse edit views if necessary
+            if (isExpandedForEdit) {
+                toggleEditViews(expandedStationPosition, expandedStationUuid)
+            }
+            reorderStationUuid = stationUuid
+        }
+        notifyItemChanged(position)
+    }
+
 
     /* Shows / hides the edit view for a station */
+    @SuppressLint("NotifyDataSetChanged")
     private fun toggleEditViews(position: Int, stationUuid: String) {
         when (stationUuid) {
             // CASE: this station's edit view is already expanded
@@ -328,12 +377,16 @@ class CollectionAdapter(
         when (station.starred) {
             true -> {
                 if (station.imageColor != -1) {
-                    // stationViewHolder.stationCardView.setCardBackgroundColor(station.imageColor)
                     stationViewHolder.stationStarredView.setColorFilter(station.imageColor)
+                } else {
+                    stationViewHolder.stationStarredView.clearColorFilter()
                 }
                 stationViewHolder.stationStarredView.isVisible = true
             }
-            false -> stationViewHolder.stationStarredView.isGone = true
+            false -> {
+                stationViewHolder.stationStarredView.clearColorFilter()
+                stationViewHolder.stationStarredView.isGone = true
+            }
         }
     }
 
@@ -361,6 +414,8 @@ class CollectionAdapter(
             false -> stationViewHolder.playButtonView.visibility = View.INVISIBLE
         }
         stationViewHolder.stationCardView.setOnClickListener {
+            if (reorderStationUuid.isNotEmpty()) return@setOnClickListener
+            if (expandedStationPosition == stationViewHolder.bindingAdapterPosition) return@setOnClickListener
             collectionAdapterListener.onPlayButtonTapped(station.uuid)
         }
         stationViewHolder.playButtonView.setOnClickListener {
@@ -375,9 +430,71 @@ class CollectionAdapter(
         stationViewHolder.stationImageView.setOnClickListener {
             collectionAdapterListener.onPlayButtonTapped(station.uuid)
         }
+
+        // TV improvement: Allow reordering with DPAD
+        stationViewHolder.stationCardView.setOnKeyListener { _, keyCode, event ->
+            if (event.action == KeyEvent.ACTION_DOWN) {
+                // Reorder mode handling
+                if (reorderStationUuid == station.uuid) {
+                    when (keyCode) {
+                        KeyEvent.KEYCODE_DPAD_UP -> {
+                            val currentPos = stationViewHolder.bindingAdapterPosition
+                            if (currentPos > 0) {
+                                onItemMove(currentPos, currentPos - 1)
+                            }
+                            return@setOnKeyListener true
+                        }
+                        KeyEvent.KEYCODE_DPAD_DOWN -> {
+                            val currentPos = stationViewHolder.bindingAdapterPosition
+                            if (currentPos < collection.stations.size - 1) {
+                                onItemMove(currentPos, currentPos + 1)
+                            }
+                            return@setOnKeyListener true
+                        }
+                        KeyEvent.KEYCODE_NUMPAD_2, KeyEvent.KEYCODE_2, KeyEvent.KEYCODE_PLUS,
+                        KeyEvent.KEYCODE_BACK, KeyEvent.KEYCODE_ENTER, KeyEvent.KEYCODE_DPAD_CENTER -> {
+                            toggleReorderMode(stationViewHolder.bindingAdapterPosition, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                        else -> return@setOnKeyListener true // Consume other keys in reorder mode
+                    }
+                }
+
+                when (keyCode) {
+                    KeyEvent.KEYCODE_DPAD_LEFT -> {
+                        if (editStationsEnabled && expandedStationPosition != stationViewHolder.bindingAdapterPosition) {
+                            val position: Int = stationViewHolder.bindingAdapterPosition
+                            toggleEditViews(position, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_3, KeyEvent.KEYCODE_3, KeyEvent.KEYCODE_BACK -> {
+                        if (expandedStationPosition == stationViewHolder.bindingAdapterPosition) {
+                            val position: Int = stationViewHolder.bindingAdapterPosition
+                            toggleEditViews(position, station.uuid)
+                            return@setOnKeyListener true
+                        }
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_0, KeyEvent.KEYCODE_0, KeyEvent.KEYCODE_DEL -> {
+                        removeStation(context, stationViewHolder.bindingAdapterPosition)
+                        return@setOnKeyListener true
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_1, KeyEvent.KEYCODE_1, KeyEvent.KEYCODE_SPACE -> {
+                        toggleStarredStation(context, stationViewHolder.bindingAdapterPosition)
+                        return@setOnKeyListener true
+                    }
+                    KeyEvent.KEYCODE_NUMPAD_2, KeyEvent.KEYCODE_2, KeyEvent.KEYCODE_PLUS -> {
+                        toggleReorderMode(stationViewHolder.bindingAdapterPosition, station.uuid)
+                        return@setOnKeyListener true
+                    }
+                }
+            }
+            false
+        }
+
         stationViewHolder.playButtonView.setOnLongClickListener {
             if (editStationsEnabled) {
-                val position: Int = stationViewHolder.adapterPosition
+                val position: Int = stationViewHolder.bindingAdapterPosition
                 toggleEditViews(position, station.uuid)
                 return@setOnLongClickListener true
             } else {
@@ -386,7 +503,7 @@ class CollectionAdapter(
         }
         stationViewHolder.stationNameView.setOnLongClickListener {
             if (editStationsEnabled) {
-                val position: Int = stationViewHolder.adapterPosition
+                val position: Int = stationViewHolder.bindingAdapterPosition
                 toggleEditViews(position, station.uuid)
                 return@setOnLongClickListener true
             } else {
@@ -395,7 +512,7 @@ class CollectionAdapter(
         }
         stationViewHolder.stationStarredView.setOnLongClickListener {
             if (editStationsEnabled) {
-                val position: Int = stationViewHolder.adapterPosition
+                val position: Int = stationViewHolder.bindingAdapterPosition
                 toggleEditViews(position, station.uuid)
                 return@setOnLongClickListener true
             } else {
@@ -404,7 +521,7 @@ class CollectionAdapter(
         }
         stationViewHolder.stationImageView.setOnLongClickListener {
             if (editStationsEnabled) {
-                val position: Int = stationViewHolder.adapterPosition
+                val position: Int = stationViewHolder.bindingAdapterPosition
                 toggleEditViews(position, station.uuid)
                 return@setOnLongClickListener true
             } else {
@@ -470,24 +587,25 @@ class CollectionAdapter(
 
         } else if (holder is StationViewHolder) {
             // get station from position
-            collection.stations[holder.getAdapterPosition()]
+            val station: Station = collection.stations[holder.bindingAdapterPosition]
 
             for (data in payloads) {
                 when (data as Int) {
                     Keys.HOLDER_UPDATE_COVER -> {
-                        // todo implement
+                        setStationImage(holder, station)
+                        setStarredIcon(holder, station)
                     }
                     Keys.HOLDER_UPDATE_NAME -> {
-                        // todo implement
+                        setStationName(holder, station)
                     }
                     Keys.HOLDER_UPDATE_PLAYBACK_STATE -> {
-                        // todo implement
+                        setStationButtons(holder, station)
                     }
                     Keys.HOLDER_UPDATE_PLAYBACK_PROGRESS -> {
-                        // todo implement
+                        setPlaybackProgress(holder, station)
                     }
                     Keys.HOLDER_UPDATE_DOWNLOAD_STATE -> {
-                        // todo implement
+                        setDownloadProgress(holder, station)
                     }
                 }
             }
@@ -574,21 +692,6 @@ class CollectionAdapter(
     }
 
 
-//    /* Initiates update of a station's information */ // todo move to CollectionHelper
-//    private fun updateStation(context: Context, station: Station) {
-//        if (station.radioBrowserStationUuid.isNotEmpty()) {
-//            // get updated station from radio browser - results are handled by onRadioBrowserSearchResults
-//            val radioBrowserSearch: RadioBrowserSearch = RadioBrowserSearch(context, this)
-//            radioBrowserSearch.searchStation(context, station.radioBrowserStationUuid, Keys.SEARCH_TYPE_BY_UUID)
-//        } else if (station.remoteStationLocation.isNotEmpty()) {
-//            // download playlist // todo check content type detection is necessary here
-//            DownloadHelper.downloadPlaylists(context, arrayOf(station.remoteStationLocation))
-//        } else {
-//            Log.w(TAG, "Unable to update station: ${station.name}.")
-//        }
-//    }
-
-
     /* Determines if position is last */
     private fun isPositionFooter(position: Int): Boolean {
         return position == collection.stations.size
@@ -599,7 +702,7 @@ class CollectionAdapter(
     @SuppressLint("NotifyDataSetChanged")
     private fun updateRecyclerView(oldCollection: Collection, newCollection: Collection) {
         collection = newCollection
-        if (oldCollection.stations.size == 0 && newCollection.stations.size > 0) {
+        if (oldCollection.stations.isEmpty() && newCollection.stations.isNotEmpty()) {
             // data set has been initialized - redraw the whole list
             notifyDataSetChanged()
         } else {
@@ -637,9 +740,9 @@ class CollectionAdapter(
         SharedPreferences.OnSharedPreferenceChangeListener { _, key ->
             when (key) {
                 Keys.PREF_EDIT_STATIONS -> editStationsEnabled =
-                    PreferencesHelper.loadEditStationsEnabled()
+                    PreferencesHelper.loadEditStationsEnabled(context)
                 Keys.PREF_EDIT_STREAMS_URIS -> editStationStreamsEnabled =
-                    PreferencesHelper.loadEditStreamUrisEnabled()
+                    PreferencesHelper.loadEditStreamUrisEnabled(context)
             }
         }
     /*
@@ -650,12 +753,14 @@ class CollectionAdapter(
     /*
      * Inner class: ViewHolder for the Add New Station action
      */
-    private inner class AddNewViewHolder(listItemAddNewLayout: View) :
+    private class AddNewViewHolder(listItemAddNewLayout: View) :
         RecyclerView.ViewHolder(listItemAddNewLayout) {
         val addNewStationView: ExtendedFloatingActionButton =
             listItemAddNewLayout.findViewById(R.id.card_add_new_station)
         val settingsButtonView: ExtendedFloatingActionButton =
             listItemAddNewLayout.findViewById(R.id.card_settings)
+        val visualizerButtonView: ExtendedFloatingActionButton =
+            listItemAddNewLayout.findViewById(R.id.card_visualizer)
     }
     /*
      * End of inner class
@@ -665,14 +770,15 @@ class CollectionAdapter(
     /*
      * Inner class: ViewHolder for a station
      */
-    private inner class StationViewHolder(stationCardLayout: View) :
+    private class StationViewHolder(stationCardLayout: View) :
         RecyclerView.ViewHolder(stationCardLayout) {
-        val stationCardView: CardView = stationCardLayout.findViewById(R.id.station_card)
+        val stationCardView: MaterialCardView = stationCardLayout.findViewById(R.id.station_card)
         val stationImageView: ImageView = stationCardLayout.findViewById(R.id.station_icon)
         val stationNameView: TextView = stationCardLayout.findViewById(R.id.station_name)
         val stationStarredView: ImageView = stationCardLayout.findViewById(R.id.starred_icon)
+        val bufferingProgress: ProgressBar = stationCardLayout.findViewById(R.id.buffering_progress)
+        val downloadProgress: ProgressBar = stationCardLayout.findViewById(R.id.download_progress)
 
-        //        val menuButtonView: ImageView = stationCardLayout.findViewById(R.id.menu_button)
         val playButtonView: ImageView = stationCardLayout.findViewById(R.id.playback_button)
         val editViews: Group = stationCardLayout.findViewById(R.id.default_edit_views)
         val stationImageChangeView: ImageView =

app/src/main/java/com/michatec/radio/collection/CollectionViewModel.kt

@@ -1,17 +1,3 @@
-/*
- * CollectionViewModel.kt
- * Implements the CollectionViewModel class
- * A CollectionViewModel stores the collection of stations as live data
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.collection
 
 import android.app.Application

app/src/main/java/com/michatec/radio/core/Collection.kt

@@ -1,16 +1,3 @@
-/*
- * Collection.kt
- * Implements the Collection class
- * A Collection object holds a list of radio stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
 package com.michatec.radio.core
 
 import android.os.Parcelable

app/src/main/java/com/michatec/radio/core/Station.kt

@@ -1,17 +1,3 @@
-/*
- * Station.kt
- * Implements the Station class
- * A Station object holds the base data of a radio
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.core
 
 import android.os.Parcelable
@@ -48,7 +34,9 @@ data class Station(
     @Expose var radioBrowserStationUuid: String = String(),
     @Expose var radioBrowserChangeUuid: String = String(),
     @Expose var bitrate: Int = 0,
-    @Expose var codec: String = String()
+    @Expose var codec: String = String(),
+    @Expose var bufferingProgress: Int = 0,
+    @Expose var downloadProgress: Int = 0
 ) : Parcelable {
 
 
@@ -79,6 +67,12 @@ data class Station(
     }
 
 
+    /* Getter for media type */
+    fun getMediaType(): String {
+        return streamContent
+    }
+
+
     /* Creates a deep copy of a Station */
     fun deepCopy(): Station {
         return Station(
@@ -101,7 +95,9 @@ data class Station(
             radioBrowserStationUuid = radioBrowserStationUuid,
             radioBrowserChangeUuid = radioBrowserChangeUuid,
             bitrate = bitrate,
-            codec = codec
+            codec = codec,
+            bufferingProgress = bufferingProgress,
+            downloadProgress = downloadProgress
         )
     }
 }

app/src/main/java/com/michatec/radio/dialogs/AddStationDialog.kt

@@ -1,22 +1,10 @@
-/*
- * AddStationDialog.kt
- * Implements the AddStationDialog class
- * A AddStationDialog shows a dialog with list of stations to import
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-23 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context
 import android.view.LayoutInflater
+import android.widget.Button
 import androidx.appcompat.app.AlertDialog
+import androidx.core.view.isGone
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
@@ -42,13 +30,11 @@ class AddStationDialog (
     }
 
 
-    /* Define log tag */
-    private val TAG = AddStationDialog::class.java.simpleName
-
-
     /* Main class variables */
     private lateinit var dialog: AlertDialog
     private lateinit var stationSearchResultList: RecyclerView
+    private var customPositiveButton: Button? = null
+    private var customNegativeButton: Button? = null
     private lateinit var searchResultAdapter: SearchResultAdapter
     private var station: Station = Station()
 
@@ -77,6 +63,10 @@ class AddStationDialog (
         // set up list of search results
         setupRecyclerView(context)
 
+        // find custom buttons (for TV layout)
+        customPositiveButton = view.findViewById(R.id.dialog_positive_button)
+        customNegativeButton = view.findViewById(R.id.dialog_negative_button)
+
         // add okay ("Add") button
         builder.setPositiveButton(R.string.dialog_find_station_button_add) { _, _ ->
             // listen for click on add button
@@ -92,6 +82,17 @@ class AddStationDialog (
             searchResultAdapter.stopPrePlayback()
         }
 
+        // set up custom buttons if they exist (TV layout)
+        customPositiveButton?.setOnClickListener {
+            listener.onAddStationDialog(station)
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+        customNegativeButton?.setOnClickListener {
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+
         // set dialog view
         builder.setView(view)
 
@@ -99,8 +100,16 @@ class AddStationDialog (
         dialog = builder.create()
         dialog.show()
 
-        // initially disable "Add" button
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        // handle button visibility and state
+        if (customPositiveButton != null) {
+            // hide default buttons if custom ones are used
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isGone = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isGone = true
+            customPositiveButton?.isEnabled = false
+        } else {
+            // initially disable default "Add" button
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        }
     }
 
 
@@ -121,12 +130,14 @@ class AddStationDialog (
     /* Implement activateAddButton to enable the "Add" button */
     override fun activateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = true
+        customPositiveButton?.isEnabled = true
     }
 
 
     /* Implement deactivateAddButton to disable the "Add" button */
     override fun deactivateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
     }
 
 

app/src/main/java/com/michatec/radio/dialogs/ErrorDialog.kt

@@ -1,17 +1,3 @@
-/*
- * ErrorDialog.kt
- * Implements the ErrorDialog class
- * An ErrorDialog shows an error dialog with details
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context
@@ -19,6 +5,7 @@ import android.text.method.ScrollingMovementMethod
 import android.view.LayoutInflater
 import android.view.View
 import android.widget.TextView
+import android.widget.Toast
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
@@ -46,9 +33,9 @@ class ErrorDialog {
         // get views
         val inflater: LayoutInflater = LayoutInflater.from(context)
         val view: View = inflater.inflate(R.layout.dialog_generic_with_details, null)
-        val errorMessageView: TextView = view.findViewById(R.id.dialog_message) as TextView
-        val errorDetailsLinkView: TextView = view.findViewById(R.id.dialog_details_link) as TextView
-        val errorDetailsView: TextView = view.findViewById(R.id.dialog_details) as TextView
+        val errorMessageView: TextView = view.findViewById(R.id.dialog_message)
+        val errorDetailsLinkView: TextView = view.findViewById(R.id.dialog_details_link)
+        val errorDetailsView: TextView = view.findViewById(R.id.dialog_details)
 
         // set dialog view
         builder.setView(view)
@@ -81,8 +68,7 @@ class ErrorDialog {
 
         // add okay button
         builder.setPositiveButton(R.string.dialog_generic_button_okay) { _, _ ->
-            // listen for click on okay button
-            // do nothing
+            Toast.makeText(context, R.string.dialog_generic_button_okay, Toast.LENGTH_SHORT).show()
         }
 
         // display error dialog

app/src/main/java/com/michatec/radio/dialogs/FindStationDialog.kt

@@ -1,17 +1,3 @@
-/*
- * FindStationDialog.kt
- * Implements the FindStationDialog class
- * A FindStationDialog shows a dialog with search box and list of results
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.annotation.SuppressLint
@@ -21,6 +7,7 @@ import android.os.Handler
 import android.os.Looper
 import android.view.LayoutInflater
 import android.view.inputmethod.InputMethodManager
+import android.widget.Button
 import android.widget.ProgressBar
 import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.widget.SearchView
@@ -63,6 +50,8 @@ class FindStationDialog (
     private lateinit var searchRequestProgressIndicator: ProgressBar
     private lateinit var noSearchResultsTextView: MaterialTextView
     private lateinit var stationSearchResultList: RecyclerView
+    private var customPositiveButton: Button? = null
+    private var customNegativeButton: Button? = null
     private lateinit var searchResultAdapter: SearchResultAdapter
     private lateinit var radioBrowserSearch: RadioBrowserSearch
     private lateinit var directInputCheck: DirectInputCheck
@@ -134,6 +123,10 @@ class FindStationDialog (
         // set up list of search results
         setupRecyclerView(context)
 
+        // find custom buttons (for TV layout)
+        customPositiveButton = view.findViewById(R.id.dialog_positive_button)
+        customNegativeButton = view.findViewById(R.id.dialog_negative_button)
+
         // add okay ("Add") button
         builder.setPositiveButton(R.string.dialog_find_station_button_add) { _, _ ->
             // listen for click on add button
@@ -152,6 +145,18 @@ class FindStationDialog (
             searchResultAdapter.stopPrePlayback()
         }
 
+        // set up custom buttons if they exist (TV layout)
+        customPositiveButton?.setOnClickListener {
+            listener.onFindStationDialog(station)
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+        customNegativeButton?.setOnClickListener {
+            radioBrowserSearch.stopSearchRequest()
+            searchResultAdapter.stopPrePlayback()
+            dialog.dismiss()
+        }
+
         // listen for input
         stationSearchBoxView.setOnQueryTextListener(object : SearchView.OnQueryTextListener {
             override fun onQueryTextChange(query: String): Boolean {
@@ -174,10 +179,18 @@ class FindStationDialog (
         dialog = builder.create()
         dialog.show()
 
-        // initially disable "Add" button
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
-        dialog.getButton(AlertDialog.BUTTON_POSITIVE).isAllCaps = true
-        dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isAllCaps = true
+        // handle button visibility and state
+        if (customPositiveButton != null) {
+            // hide default buttons if custom ones are used
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isGone = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isGone = true
+            customPositiveButton?.isEnabled = false
+        } else {
+            // initially disable default "Add" button
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+            dialog.getButton(AlertDialog.BUTTON_POSITIVE).isAllCaps = true
+            dialog.getButton(AlertDialog.BUTTON_NEGATIVE).isAllCaps = true
+        }
     }
 
 
@@ -242,12 +255,14 @@ class FindStationDialog (
     /* Makes the "Add" button clickable */
     override fun activateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = true
+        customPositiveButton?.isEnabled = true
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
     }
 
     override fun deactivateAddButton() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
     }
@@ -256,6 +271,7 @@ class FindStationDialog (
     /* Resets the dialog layout to default state */
     private fun resetLayout(clearAdapter: Boolean = false) {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isGone = true
         searchResultAdapter.resetSelection(clearAdapter)
@@ -265,6 +281,7 @@ class FindStationDialog (
     /* Display the "No Results" error - hide other unneeded views */
     private fun showNoResultsError() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isGone = true
         noSearchResultsTextView.isVisible = true
     }
@@ -273,6 +290,7 @@ class FindStationDialog (
     /* Display the "No Results" error - hide other unneeded views */
     private fun showProgressIndicator() {
         dialog.getButton(AlertDialog.BUTTON_POSITIVE).isEnabled = false
+        customPositiveButton?.isEnabled = false
         searchRequestProgressIndicator.isVisible = true
         noSearchResultsTextView.isGone = true
     }

app/src/main/java/com/michatec/radio/dialogs/PresetSelectionDialog.kt

@@ -0,0 +1,86 @@
+package com.michatec.radio.dialogs
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.widget.RadioButton
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat.getString
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.michatec.radio.R
+import com.michatec.radio.helpers.PreferencesHelper
+
+
+/*
+ * PresetSelectionDialog class
+ */
+class PresetSelectionDialog(private var presetSelectionDialogListener: PresetSelectionDialogListener) {
+
+    /* Interface used to communicate back to activity */
+    interface PresetSelectionDialogListener {
+        fun onPresetSelectionDialog(dialogResult: Boolean, selectedPreset: String)
+    }
+
+
+    /* Main class variables */
+    private lateinit var dialog: AlertDialog
+
+
+    /* Construct and show dialog */
+    fun show(context: Context) {
+        // prepare dialog builder
+        val builder = MaterialAlertDialogBuilder(context)
+
+        // inflate custom layout
+        val inflater = LayoutInflater.from(context)
+        val view = inflater.inflate(R.layout.dialog_preset_selection, null)
+
+        // find radio buttons
+        val radioGroup = view.findViewById<android.widget.RadioGroup>(R.id.preset_radio_group)
+        val radioNone = view.findViewById<RadioButton>(R.id.radio_preset_none)
+        val radioRock = view.findViewById<RadioButton>(R.id.radio_preset_rock)
+        val radioPop = view.findViewById<RadioButton>(R.id.radio_preset_pop)
+        val radioJazz = view.findViewById<RadioButton>(R.id.radio_preset_jazz)
+        val radioFlat = view.findViewById<RadioButton>(R.id.radio_preset_flat)
+
+        // set current selection
+        val currentPreset = PreferencesHelper.loadSelectedPreset()
+        when (currentPreset) {
+            "" -> radioNone.isChecked = true
+            getString(context, R.string.pref_preset_rock) -> radioRock.isChecked = true
+            getString(context, R.string.pref_preset_pop) -> radioPop.isChecked = true
+            getString(context, R.string.pref_preset_jazz) -> radioJazz.isChecked = true
+            getString(context, R.string.pref_preset_flat) -> radioFlat.isChecked = true
+            else -> radioNone.isChecked = true
+        }
+
+        // set up radio group listener
+        radioGroup.setOnCheckedChangeListener { _, checkedId ->
+            val selectedPreset = when (checkedId) {
+                R.id.radio_preset_none -> ""
+                R.id.radio_preset_rock -> getString(context, R.string.pref_preset_rock)
+                R.id.radio_preset_pop -> getString(context, R.string.pref_preset_pop)
+                R.id.radio_preset_jazz -> getString(context, R.string.pref_preset_jazz)
+                R.id.radio_preset_flat -> getString(context, R.string.pref_preset_flat)
+                else -> ""
+            }
+            // save preset selection to preferences
+            PreferencesHelper.saveSelectedPreset(selectedPreset)
+            // notify listener
+            presetSelectionDialogListener.onPresetSelectionDialog(true, selectedPreset)
+            // dismiss dialog
+            dialog.dismiss()
+        }
+
+        // set custom view
+        builder.setView(view)
+
+        // handle outside-click as cancel
+        builder.setOnCancelListener {
+            presetSelectionDialogListener.onPresetSelectionDialog(false, "")
+        }
+
+        // display dialog
+        dialog = builder.create()
+        dialog.show()
+    }
+}

app/src/main/java/com/michatec/radio/dialogs/ThemeSelectionDialog.kt

@@ -0,0 +1,89 @@
+package com.michatec.radio.dialogs
+
+import android.content.Context
+import android.view.LayoutInflater
+import android.widget.RadioButton
+import androidx.appcompat.app.AlertDialog
+import com.google.android.material.dialog.MaterialAlertDialogBuilder
+import com.michatec.radio.Keys
+import com.michatec.radio.R
+import com.michatec.radio.helpers.AppThemeHelper
+import com.michatec.radio.helpers.PreferencesHelper
+
+
+/*
+ * ThemeSelectionDialog class
+ */
+class ThemeSelectionDialog(private var themeSelectionDialogListener: ThemeSelectionDialogListener) {
+
+    /* Interface used to communicate back to activity */
+    interface ThemeSelectionDialogListener {
+        fun onThemeSelectionDialog(dialogResult: Boolean, selectedTheme: String) {
+        }
+    }
+
+
+    /* Main class variables */
+    private lateinit var dialog: AlertDialog
+
+
+    /* Construct and show dialog */
+    fun show(context: Context) {
+        // prepare dialog builder
+        val builder = MaterialAlertDialogBuilder(context)
+
+        // inflate custom layout
+        val inflater = LayoutInflater.from(context)
+        val view = inflater.inflate(R.layout.dialog_theme_selection, null)
+
+        // find radio buttons
+        val radioGroup = view.findViewById<android.widget.RadioGroup>(R.id.theme_radio_group)
+        val radioFollowSystem = view.findViewById<RadioButton>(R.id.radio_theme_follow_system)
+        val radioLight = view.findViewById<RadioButton>(R.id.radio_theme_light)
+        val radioDark = view.findViewById<RadioButton>(R.id.radio_theme_dark)
+
+        // set current selection
+        val currentTheme = AppThemeHelper.getCurrentTheme(context)
+        when (currentTheme) {
+            context.getString(R.string.pref_theme_selection_mode_device_default) -> {
+                radioFollowSystem.isChecked = true
+            }
+            context.getString(R.string.pref_theme_selection_mode_light) -> {
+                radioLight.isChecked = true
+            }
+            context.getString(R.string.pref_theme_selection_mode_dark) -> {
+                radioDark.isChecked = true
+            }
+        }
+
+        // set up radio group listener
+        radioGroup.setOnCheckedChangeListener { _, checkedId ->
+            val selectedTheme = when (checkedId) {
+                R.id.radio_theme_follow_system -> Keys.STATE_THEME_FOLLOW_SYSTEM
+                R.id.radio_theme_light -> Keys.STATE_THEME_LIGHT_MODE
+                R.id.radio_theme_dark -> Keys.STATE_THEME_DARK_MODE
+                else -> Keys.STATE_THEME_FOLLOW_SYSTEM
+            }
+            // save theme selection to preferences
+            PreferencesHelper.saveThemeSelection(selectedTheme)
+            // apply theme immediately
+            AppThemeHelper.setTheme(selectedTheme)
+            // notify listener
+            themeSelectionDialogListener.onThemeSelectionDialog(true, selectedTheme)
+            // dismiss dialog
+            dialog.dismiss()
+        }
+
+        // set custom view
+        builder.setView(view)
+
+        // handle outside-click as cancel
+        builder.setOnCancelListener {
+            themeSelectionDialogListener.onThemeSelectionDialog(false, Keys.STATE_THEME_FOLLOW_SYSTEM)
+        }
+
+        // display dialog
+        dialog = builder.create()
+        dialog.show()
+    }
+}

app/src/main/java/com/michatec/radio/dialogs/YesNoDialog.kt

@@ -1,17 +1,3 @@
-/*
- * YesNoDialog
- * Implements the YesNoDialog class
- * A YesNoDialog asks the user if he/she wants to do something or not
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.dialogs
 
 import android.content.Context

app/src/main/java/com/michatec/radio/extensions/ArrayListExt.kt

@@ -1,18 +1,3 @@
-/*
- * ArrayListExt.kt
- * Implements the ArrayListExt extension methods
- * Useful extension methods for ArrayLists
- * Source: https://raw.githubusercontent.com/googlesamples/android-UniversalMusicPlayer/master/common/src/main/java/com/example/android/uamp/media/extensions/MediaMetadataCompatExt.kt
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.extensions
 
 

app/src/main/java/com/michatec/radio/extensions/MediaControllerExt.kt

@@ -1,22 +1,7 @@
-/*
- * MediaControllerExt.kt
- * Implements the MediaControllerExt extension methods
- * Useful extension methods for MediaController
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.extensions
 
 import android.content.Context
 import android.os.Bundle
-import androidx.core.os.bundleOf
 import androidx.media3.session.MediaController
 import androidx.media3.session.SessionCommand
 import androidx.media3.session.SessionResult
@@ -50,7 +35,7 @@ fun MediaController.requestSleepTimerRemaining(): ListenableFuture<SessionResult
 }
 
 
-/* Request sleep timer remaining */
+/* Request metadata history */
 fun MediaController.requestMetadataHistory(): ListenableFuture<SessionResult> {
     return sendCustomCommand(
         SessionCommand(Keys.CMD_REQUEST_METADATA_HISTORY, Bundle.EMPTY),
@@ -58,6 +43,14 @@ fun MediaController.requestMetadataHistory(): ListenableFuture<SessionResult> {
     )
 }
 
+/* Request visualizer data */
+fun MediaController.requestVisualizerData(): ListenableFuture<SessionResult> {
+    return sendCustomCommand(
+        SessionCommand(Keys.CMD_GET_VISUALIZER_DATA, Bundle.EMPTY),
+        Bundle.EMPTY
+    )
+}
+
 
 /* Starts playback with a new media item */
 fun MediaController.play(context: Context, station: Station) {
@@ -71,8 +64,11 @@ fun MediaController.play(context: Context, station: Station) {
 
 /* Starts playback with of a stream url */
 fun MediaController.playStreamDirectly(streamUri: String) {
+    val bundle = Bundle().apply {
+        putString(Keys.KEY_STREAM_URI, streamUri)
+    }
     sendCustomCommand(
         SessionCommand(Keys.CMD_PLAY_STREAM, Bundle.EMPTY),
-        bundleOf(Pair(Keys.KEY_STREAM_URI, streamUri))
+        bundle
     )
 }

app/src/main/java/com/michatec/radio/helpers/AppThemeHelper.kt

@@ -1,25 +1,7 @@
-/*
- * AppThemeHelper.kt
- * Implements the AppThemeHelper object
- * A AppThemeHelper can set the different app themes: Light Mode, Dark Mode, Follow System
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
-import android.content.res.TypedArray
 import android.util.Log
-import android.util.TypedValue
-import androidx.annotation.AttrRes
-import androidx.annotation.ColorInt
 import androidx.appcompat.app.AppCompatDelegate
 import com.michatec.radio.Keys
 import com.michatec.radio.R
@@ -33,8 +15,6 @@ object AppThemeHelper {
     /* Define log tag */
     private val TAG: String = AppThemeHelper::class.java.simpleName
 
-    private val sTypedValue = TypedValue()
-
     /* Sets app theme */
     fun setTheme(nightModeState: String) {
         when (nightModeState) {
@@ -76,14 +56,4 @@ object AppThemeHelper {
             else -> context.getString(R.string.pref_theme_selection_mode_device_default)
         }
     }
-
-
-    @ColorInt
-    fun getColor(context: Context, @AttrRes resource: Int): Int {
-        val a: TypedArray = context.obtainStyledAttributes(sTypedValue.data, intArrayOf(resource))
-        val color = a.getColor(0, 0)
-        a.recycle()
-        return color
-    }
-
 }

app/src/main/java/com/michatec/radio/helpers/AudioHelper.kt

@@ -1,23 +1,13 @@
-/*
- * AudioHelper.kt
- * Implements the AudioHelper object
- * A AudioHelper provides helper methods for handling audio files
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.util.Log
+import androidx.annotation.OptIn
 import androidx.media3.common.Metadata
+import androidx.media3.common.util.UnstableApi
 import androidx.media3.extractor.metadata.icy.IcyHeaders
 import androidx.media3.extractor.metadata.icy.IcyInfo
+import androidx.media3.extractor.metadata.id3.Id3Frame
+import androidx.media3.extractor.metadata.id3.TextInformationFrame
 import com.michatec.radio.Keys
 import kotlin.math.min
 
@@ -33,29 +23,53 @@ object AudioHelper {
 
 
     /* Extract audio stream metadata */
+    @OptIn(UnstableApi::class)
     fun getMetadataString(metadata: Metadata): String {
-        var metadataString = String()
+        var title = ""
+        var artist = ""
+        var album = ""
         for (i in 0 until metadata.length()) {
             // extract IceCast metadata
             when (val entry = metadata.get(i)) {
                 is IcyInfo -> {
-                    metadataString = entry.title.toString()
+                    title = entry.title.toString()
                 }
 
                 is IcyHeaders -> {
                     Log.i(TAG, "icyHeaders:" + entry.name + " - " + entry.genre)
                 }
 
+                is Id3Frame -> {
+                    when (entry) {
+                        is TextInformationFrame -> {
+                            when (entry.id) {
+                                "TIT2" -> title = entry.values.getOrNull(0) ?: "" // Title
+                                "TPE1" -> artist = entry.values.getOrNull(0) ?: "" // Artist
+                                "TALB" -> album = entry.values.getOrNull(0) ?: "" // Album
+                            }
+                        }
+                        else -> {
+                            Log.d(TAG, "Unhandled ID3 frame: ${entry.javaClass.simpleName}")
+                        }
+                    }
+                }
+
                 else -> {
                     Log.w(TAG, "Unsupported metadata received (type = ${entry.javaClass.simpleName})")
                 }
             }
-            // TODO implement HLS metadata extraction (Id3Frame / PrivFrame)
-            // https://exoplayer.dev/doc/reference/com/google/android/exoplayer2/metadata/Metadata.Entry.html
+        }
+        // Build metadata string
+        var metadataString = title
+        if (artist.isNotEmpty() && title.isNotEmpty()) {
+            metadataString = "$artist - $title"
+        }
+        if (album.isNotEmpty() && metadataString.isNotEmpty()) {
+            metadataString += " ($album)"
         }
         // ensure a max length of the metadata string
         if (metadataString.isNotEmpty()) {
-            metadataString = metadataString.substring(0, min(metadataString.length, Keys.DEFAULT_MAX_LENGTH_OF_METADATA_ENTRY))
+            metadataString = metadataString.take(min(metadataString.length, Keys.DEFAULT_MAX_LENGTH_OF_METADATA_ENTRY))
         }
         return metadataString
     }

app/src/main/java/com/michatec/radio/helpers/BackupHelper.kt

@@ -1,17 +1,3 @@
-/*
- * BackupHelper.kt
- * Implements the BackupHelper object
- * A BackupHelper provides helper methods for backing up and restoring the radio station collection
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.ContentResolver
@@ -67,7 +53,7 @@ object BackupHelper {
         Snackbar.make(view, R.string.toastmessage_restored, Snackbar.LENGTH_LONG).show()
 
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
-            // bypass "ZipException" for Android 14 or above applications when zip file names contain ".." or start with "/"
+            // bypass "ZipException" for Android 14 or above applications when zip file names contain "." or start with "/"
             dalvik.system.ZipPathValidator.clearCallback()
         }
 

app/src/main/java/com/michatec/radio/helpers/CollectionHelper.kt

@@ -1,17 +1,3 @@
-/*
- * CollectionHelper.kt
- * Implements the CollectionHelper object
- * A CollectionHelper provides helper methods for the collection of stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -288,32 +274,6 @@ object CollectionHelper {
     }
 
 
-    /* Gets MediaIem for next station within collection */
-    fun getNextMediaItem(context: Context, collection: Collection, stationUuid: String): MediaItem {
-        val currentStationPosition: Int = getStationPosition(collection, stationUuid)
-        return if (collection.stations.isEmpty() || currentStationPosition == -1) {
-            buildMediaItem(context, Station())
-        } else if (currentStationPosition < collection.stations.size -1) {
-            buildMediaItem(context, collection.stations[currentStationPosition + 1])
-        } else {
-            buildMediaItem(context, collection.stations.first())
-        }
-    }
-
-
-    /* Gets MediaIem for previous station within collection */
-    fun getPreviousMediaItem(context: Context, collection: Collection, stationUuid: String): MediaItem {
-        val currentStationPosition: Int = getStationPosition(collection, stationUuid)
-        return if (collection.stations.isEmpty() || currentStationPosition == -1) {
-            buildMediaItem(context, Station())
-        } else if (currentStationPosition > 0) {
-            buildMediaItem(context, collection.stations[currentStationPosition - 1])
-        } else {
-            buildMediaItem(context, collection.stations.last())
-        }
-    }
-
-
     /* Get the position from collection for given UUID */
     fun getStationPosition(collection: Collection, stationUuid: String): Int {
         collection.stations.forEachIndexed { stationId, station ->
@@ -339,7 +299,7 @@ object CollectionHelper {
     }
 
 
-    /* Returns the children stations under under root (simple media library structure: root > stations) */
+    /* Returns the children stations under root (simple media library structure: root > stations) */
     fun getChildren(context: Context, collection: Collection): List<MediaItem> {
         val mediaItems: MutableList<MediaItem> = mutableListOf()
         collection.stations.forEach { station ->
@@ -561,7 +521,7 @@ object CollectionHelper {
     fun exportCollectionM3u(context: Context, collection: Collection) {
         Log.v(TAG, "Exporting collection of stations as M3U")
         // export collection as M3U - launch = fire & forget (no return value from save collection)
-        if (collection.stations.size > 0) {
+        if (collection.stations.isNotEmpty()) {
             CoroutineScope(IO).launch {
                 FileHelper.backupCollectionAsM3uSuspended(
                     context,
@@ -603,7 +563,7 @@ object CollectionHelper {
     fun exportCollectionPls(context: Context, collection: Collection) {
         Log.v(TAG, "Exporting collection of stations as PLS")
         // export collection as PLS - launch = fire & forget (no return value from save collection)
-        if (collection.stations.size > 0) {
+        if (collection.stations.isNotEmpty()) {
             CoroutineScope(IO).launch {
                 FileHelper.backupCollectionAsPlsSuspended(
                     context,
@@ -670,76 +630,38 @@ object CollectionHelper {
         LocalBroadcastManager.getInstance(context).sendBroadcast(collectionChangedIntent)
     }
 
-
-    //    /* Creates MediaMetadata for a single station - used in media session*/
-//    fun buildStationMediaMetadata(context: Context, station: Station, metadata: String): MediaMetadataCompat {
-//        return MediaMetadataCompat.Builder().apply {
-//            putString(MediaMetadataCompat.METADATA_KEY_ARTIST, station.name)
-//            putString(MediaMetadataCompat.METADATA_KEY_TITLE, metadata)
-//            putString(MediaMetadataCompat.METADATA_KEY_ALBUM, context.getString(R.string.app_name))
-//            putString(MediaMetadataCompat.METADATA_KEY_MEDIA_URI, station.getStreamUri())
-//            putBitmap(MediaMetadataCompat.METADATA_KEY_ALBUM_ART, ImageHelper.getScaledStationImage(context, station.image, Keys.SIZE_COVER_LOCK_SCREEN))
-//            //putString(MediaMetadataCompat.METADATA_KEY_ALBUM_ART_URI, station.image)
-//        }.build()
-//    }
-//
-//
-//    /* Creates MediaItem for a station - used by collection provider */
-//    fun buildStationMediaMetaItem(context: Context, station: Station): MediaBrowserCompat.MediaItem {
-//        val mediaDescriptionBuilder = MediaDescriptionCompat.Builder()
-//        mediaDescriptionBuilder.setMediaId(station.uuid)
-//        mediaDescriptionBuilder.setTitle(station.name)
-//        mediaDescriptionBuilder.setIconBitmap(ImageHelper.getScaledStationImage(context, station.image, Keys.SIZE_COVER_LOCK_SCREEN))
-//        // mediaDescriptionBuilder.setIconUri(station.image.toUri())
-//        return MediaBrowserCompat.MediaItem(mediaDescriptionBuilder.build(), MediaBrowserCompat.MediaItem.FLAG_PLAYABLE)
-//    }
-//
-//
-//    /* Creates description for a station - used in MediaSessionConnector */
-//    fun buildStationMediaDescription(context: Context, station: Station, metadata: String): MediaDescriptionCompat {
-//        val coverBitmap: Bitmap = ImageHelper.getScaledStationImage(context, station.image, Keys.SIZE_COVER_LOCK_SCREEN)
-//        val extras: Bundle = Bundle()
-//        extras.putParcelable(MediaMetadataCompat.METADATA_KEY_ALBUM_ART, coverBitmap)
-//        extras.putParcelable(MediaMetadataCompat.METADATA_KEY_DISPLAY_ICON, coverBitmap)
-//        return MediaDescriptionCompat.Builder().apply {
-//            setMediaId(station.uuid)
-//            setIconBitmap(coverBitmap)
-//            setIconUri(station.image.toUri())
-//            setTitle(metadata)
-//            setSubtitle(station.name)
-//            setExtras(extras)
-//        }.build()
-//    }
-
-
     /* Creates a MediaItem with MediaMetadata for a single radio station - used to prepare player */
     fun buildMediaItem(context: Context, station: Station): MediaItem {
-        // todo implement HLS MediaItems
         // put uri in RequestMetadata - credit: https://stackoverflow.com/a/70103460
         val requestMetadata = MediaItem.RequestMetadata.Builder().apply {
             setMediaUri(station.getStreamUri().toUri())
         }.build()
         // build MediaMetadata
         val mediaMetadata = MediaMetadata.Builder().apply {
+            setTitle(station.name)
             setArtist(station.name)
-            //setTitle(station.name)
+            
+            // Set artwork URI for casting (remote devices need a public URL)
+            if (station.remoteImageLocation.isNotEmpty()) {
+                setArtworkUri(station.remoteImageLocation.toUri())
+            }
+
             /* check for "file://" prevents a crash when an old backup was restored */
             if (station.image.isNotEmpty() && station.image.startsWith("file://")) {
-                //setArtworkUri(station.image.toUri())
                 setArtworkData(station.image.toUri().toFile().readBytes(), MediaMetadata.PICTURE_TYPE_FRONT_COVER)
             } else {
-                //setArtworkUri(Uri.parse(Keys.LOCATION_RESOURCES + R.raw.ic_default_station_image))
                 setArtworkData(ImageHelper.getStationImageAsByteArray(context), MediaMetadata.PICTURE_TYPE_FRONT_COVER)
             }
             setIsBrowsable(false)
             setIsPlayable(true)
+            setMediaType(MediaMetadata.MEDIA_TYPE_RADIO_STATION)
         }.build()
         // build MediaItem and return it
         return MediaItem.Builder().apply {
             setMediaId(station.uuid)
             setRequestMetadata(requestMetadata)
             setMediaMetadata(mediaMetadata)
-            //setMimeType(station.getMediaType())
+            setMimeType(station.getMediaType())
             setUri(station.getStreamUri().toUri())
         }.build()
     }

app/src/main/java/com/michatec/radio/helpers/DateTimeHelper.kt

@@ -1,17 +1,3 @@
-/*
- * DateTimeHelper.kt
- * Implements the DateTimeHelper object
- * A DateTimeHelper provides helper methods for converting Date and Time objects
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.util.Log
@@ -31,14 +17,14 @@ object DateTimeHelper {
 
 
     /* Main class variables */
-    private const val pattern: String = "EEE, dd MMM yyyy HH:mm:ss Z"
-    private val dateFormat: SimpleDateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
+    private const val PATTERN: String = "EEE, dd MMM yyyy HH:mm:ss Z"
+    private val dateFormat: SimpleDateFormat = SimpleDateFormat(PATTERN, Locale.ENGLISH)
 
 
     /* Converts RFC 2822 string representation of a date to DATE */
     fun convertFromRfc2822(dateString: String): Date {
         val date: Date = try {
-            // parse date string using standard pattern
+            // parse date string using standard PATTERN
             dateFormat.parse((dateString)) ?: Keys.DEFAULT_DATE
         } catch (e: Exception) {
             Log.w(TAG, "Unable to parse. Trying an alternative Date format. $e")
@@ -51,7 +37,7 @@ object DateTimeHelper {
 
     /* Converts a DATE to its RFC 2822 string representation */
     fun convertToRfc2822(date: Date): String {
-        val dateFormat = SimpleDateFormat(pattern, Locale.ENGLISH)
+        val dateFormat = SimpleDateFormat(PATTERN, Locale.ENGLISH)
         return dateFormat.format(date)
     }
 

app/src/main/java/com/michatec/radio/helpers/DownloadFinishedReceiver.kt

@@ -1,17 +1,3 @@
-/*
- * DownloadFinishedReceiver.kt
- * Implements the DownloadFinishedReceiver class
- * A DownloadFinishedReceiver listens for finished downloads
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.DownloadManager

app/src/main/java/com/michatec/radio/helpers/DownloadHelper.kt

@@ -1,17 +1,3 @@
-/*
- * DownloadHelper.kt
- * Implements the DownloadHelper object
- * A DownloadHelper provides helper methods for downloading files
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.DownloadManager
@@ -384,7 +370,7 @@ object DownloadHelper {
     private fun determineAllowedNetworkTypes(type: Int, ignoreWifiRestriction: Boolean): Int {
         var allowedNetworkTypes: Int =
             (DownloadManager.Request.NETWORK_WIFI or DownloadManager.Request.NETWORK_MOBILE)
-        // restrict download of audio files to WiFi if necessary
+        // restrict download of audio files to Wi-Fi if necessary
         if (type == Keys.FILE_TYPE_AUDIO) {
             if (!ignoreWifiRestriction && !PreferencesHelper.downloadOverMobile()) {
                 allowedNetworkTypes = DownloadManager.Request.NETWORK_WIFI

app/src/main/java/com/michatec/radio/helpers/ExtrasHelper.kt

@@ -0,0 +1,117 @@
+package com.michatec.radio.helpers
+
+import android.content.Context
+import android.util.AttributeSet
+import android.util.Log
+import android.view.Surface
+import android.view.SurfaceHolder
+import android.view.SurfaceView
+import android.view.ViewGroup
+import android.widget.FrameLayout
+import androidx.preference.Preference
+import androidx.preference.PreferenceViewHolder
+import com.michatec.radio.R
+
+class ExtrasHelper {
+    companion object {
+        private const val TAG = "ExtrasHelper"
+        init {
+            try {
+                System.loadLibrary("extra")
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to load extra library", e)
+            }
+        }
+
+        @JvmStatic
+        private external fun visualize(surface: Surface, data: FloatArray)
+
+        fun render(surface: Surface, data: FloatArray) {
+            if (!surface.isValid) return
+            try {
+                visualize(surface, data)
+            } catch (e: Exception) {
+                Log.e(TAG, "Native visualize failed", e)
+            }
+        }
+    }
+
+    class VisualizerPreference(context: Context, attrs: AttributeSet? = null) : Preference(context, attrs) {
+        private var visualizerView: VisualizerView? = null
+
+        init {
+            // We can use a standard layout and inject our view
+            layoutResource = R.layout.preference_visualizer
+        }
+
+        override fun onBindViewHolder(holder: PreferenceViewHolder) {
+            super.onBindViewHolder(holder)
+            
+            // Try to find the container in the inflated layout
+            var container = holder.findViewById(R.id.visualizer_container) as? ViewGroup
+
+            // Fallback: If not found by ID, maybe the root is the container?
+            if (container == null && holder.itemView is ViewGroup) {
+                container = holder.itemView as ViewGroup
+            }
+
+            if (container != null) {
+                if (visualizerView == null) {
+                    visualizerView = VisualizerView(context).apply {
+                        layoutParams = ViewGroup.LayoutParams(
+                            ViewGroup.LayoutParams.MATCH_PARENT,
+                            ViewGroup.LayoutParams.MATCH_PARENT
+                        )
+                    }
+                }
+
+                val currentParent = visualizerView?.parent as? ViewGroup
+                if (currentParent != container) {
+                    currentParent?.removeView(visualizerView)
+                    // If we injected into a standard preference, don't clear everything, just add
+                    if (container is FrameLayout || container.childCount == 0) {
+                        container.removeAllViews()
+                    }
+                    container.addView(visualizerView)
+                }
+            } else {
+                Log.e("VisualizerPreference", "Could not find any container to attach VisualizerView!")
+            }
+        }
+
+        fun update(data: FloatArray) {
+            visualizerView?.update(data)
+        }
+    }
+
+    class VisualizerView @JvmOverloads constructor(
+        context: Context, attrs: AttributeSet? = null, defStyleAttr: Int = 0
+    ) : SurfaceView(context, attrs, defStyleAttr), SurfaceHolder.Callback {
+
+        private var surface: Surface? = null
+
+        init {
+            Log.d("VisualizerView", "VisualizerView initialized")
+            holder.addCallback(this)
+        }
+
+        fun update(data: FloatArray) {
+            val s = surface
+            if (s != null && s.isValid) {
+                render(s, data)
+            }
+        }
+
+        override fun surfaceCreated(holder: SurfaceHolder) {
+            surface = holder.surface
+        }
+
+        override fun surfaceChanged(holder: SurfaceHolder, format: Int, width: Int, height: Int) {
+            surface = holder.surface
+        }
+
+        override fun surfaceDestroyed(holder: SurfaceHolder) {
+            surface = null
+        }
+    }
+}

app/src/main/java/com/michatec/radio/helpers/FileHelper.kt

@@ -1,17 +1,3 @@
-/*
- * FileHelper.kt
- * Implements the FileHelper object
- * A FileHelper provides helper methods for reading and writing files from and to device storage
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.app.Activity
@@ -33,7 +19,6 @@ import kotlinx.coroutines.Dispatchers.IO
 import java.io.*
 import java.util.*
 import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 
 
 /*
@@ -246,7 +231,7 @@ object FileHelper {
             File(activity.getExternalFilesDir(Keys.FOLDER_COLLECTION), Keys.COLLECTION_M3U_FILE)
         if (!m3uFile.exists()) {
             m3uFile = File(
-                activity.getExternalFilesDir(Keys.URLRADIO_LEGACY_FOLDER_COLLECTION),
+                activity.getExternalFilesDir(Keys.RADIO_LEGACY_FOLDER_COLLECTION),
                 Keys.COLLECTION_M3U_FILE
             )
         }
@@ -270,7 +255,7 @@ object FileHelper {
             File(activity.getExternalFilesDir(Keys.FOLDER_COLLECTION), Keys.COLLECTION_PLS_FILE)
         if (!plsFile.exists()) {
             plsFile = File(
-                activity.getExternalFilesDir(Keys.URLRADIO_LEGACY_FOLDER_COLLECTION),
+                activity.getExternalFilesDir(Keys.RADIO_LEGACY_FOLDER_COLLECTION),
                 Keys.COLLECTION_PLS_FILE
             )
         }
@@ -292,7 +277,7 @@ object FileHelper {
         collection: Collection,
         lastUpdate: Date
     ) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(saveCollection(context, collection, lastUpdate))
         }
     }
@@ -311,7 +296,7 @@ object FileHelper {
         originalFileUri: Uri,
         targetFileUri: Uri
     ): Boolean {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(copyFile(context, originalFileUri, targetFileUri))
         }
     }
@@ -319,7 +304,7 @@ object FileHelper {
 
     /* Suspend function: Exports collection of stations as M3U file - local backup copy */
     suspend fun backupCollectionAsM3uSuspended(context: Context, collection: Collection) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             Log.v(TAG, "Backing up collection as M3U - Thread: ${Thread.currentThread().name}")
             // create M3U string
             val m3uString: String = CollectionHelper.createM3uString(collection)
@@ -338,7 +323,7 @@ object FileHelper {
 
     /* Suspend function: Exports collection of stations as PLS file - local backup copy */
     suspend fun backupCollectionAsPlsSuspended(context: Context, collection: Collection) {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             Log.v(TAG, "Backing up collection as PLS - Thread: ${Thread.currentThread().name}")
             // create PLS string
             val plsString: String = CollectionHelper.createPlsString(collection)
@@ -417,16 +402,14 @@ object FileHelper {
 
     /* Reads InputStream from file uri and returns it as String */
     private fun readTextFileFromFile(context: Context): String {
-        // todo read https://commonsware.com/blog/2016/03/15/how-consume-content-uri.html
-        // https://developer.android.com/training/secure-file-sharing/retrieve-info
-
         // check if file exists
         val file = File(context.getExternalFilesDir(Keys.FOLDER_COLLECTION), Keys.COLLECTION_FILE)
         if (!file.exists() || !file.canRead()) {
             return String()
         }
         // read until last line reached
-        val stream: InputStream = file.inputStream()
+        val uri = Uri.fromFile(file)
+        val stream: InputStream = context.contentResolver.openInputStream(uri) ?: return String()
         val reader = BufferedReader(InputStreamReader(stream))
         val builder: StringBuilder = StringBuilder()
         reader.forEachLine {

app/src/main/java/com/michatec/radio/helpers/ImageHelper.kt

@@ -1,17 +1,3 @@
-/*
- * ImageHelper.kt
- * Implements the ImageHelper object
- * An ImageHelper provides helper methods for image related operations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -25,6 +11,7 @@ import com.michatec.radio.R
 import java.io.ByteArrayOutputStream
 import java.io.IOException
 import java.io.InputStream
+import androidx.core.graphics.createBitmap
 
 
 /*
@@ -98,7 +85,7 @@ object ImageHelper {
         }
 
         // create empty bitmap and canvas
-        val outputImage: Bitmap = Bitmap.createBitmap(size, size, Bitmap.Config.ARGB_8888)
+        val outputImage: Bitmap = createBitmap(size, size, Bitmap.Config.ARGB_8888)
         val imageCanvas = Canvas(outputImage)
 
         // draw square background

app/src/main/java/com/michatec/radio/helpers/ImportHelper.kt

@@ -1,42 +0,0 @@
-/*
- * ImportHelper.kt
- * Implements the ImportHelper object
- * A ImportHelper provides methods for integrating station files from Radio v3
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
-package com.michatec.radio.helpers
-
-import android.content.Context
-import com.michatec.radio.Keys
-import com.michatec.radio.core.Collection
-
-
-/*
- * ImportHelper object
- */
-object ImportHelper {
-
-
-    /* */
-    fun removeDefaultStationImageUris(context: Context) {
-        val collection: Collection = FileHelper.readCollection(context)
-        collection.stations.forEach { station ->
-            if (station.image == Keys.LOCATION_DEFAULT_STATION_IMAGE) {
-                station.image = String()
-            }
-            if (station.smallImage == Keys.LOCATION_DEFAULT_STATION_IMAGE) {
-                station.smallImage = String()
-            }
-        }
-        CollectionHelper.saveCollection(context, collection, async = false)
-    }
-
-}

app/src/main/java/com/michatec/radio/helpers/MarqueeSwitchPreference.kt

@@ -0,0 +1,25 @@
+package com.michatec.radio.helpers
+
+import android.content.Context
+import android.text.TextUtils
+import android.widget.TextView
+import androidx.preference.PreferenceViewHolder
+import androidx.preference.SwitchPreferenceCompat
+
+/*
+ * Custom SwitchPreferenceCompat that enables marquee (scrolling text) for the title
+ */
+class MarqueeSwitchPreference(context: Context) : SwitchPreferenceCompat(context) {
+
+    override fun onBindViewHolder(holder: PreferenceViewHolder) {
+        super.onBindViewHolder(holder)
+        val title = holder.findViewById(android.R.id.title) as? TextView
+        title?.apply {
+            ellipsize = TextUtils.TruncateAt.MARQUEE
+            setSingleLine(true)
+            marqueeRepeatLimit = -1 // Repeat indefinitely
+            isSelected = true       // Required for marquee to start
+            setHorizontallyScrolling(true)
+        }
+    }
+}

app/src/main/java/com/michatec/radio/helpers/NativeAudioProcessor.kt

@@ -0,0 +1,129 @@
+package com.michatec.radio.helpers
+
+import android.util.Log
+import androidx.annotation.OptIn
+import androidx.media3.common.C
+import androidx.media3.common.audio.AudioProcessor
+import androidx.media3.common.audio.AudioProcessor.AudioFormat
+import androidx.media3.common.audio.BaseAudioProcessor
+import androidx.media3.common.util.UnstableApi
+import java.nio.ByteBuffer
+import java.nio.ByteOrder
+
+@OptIn(UnstableApi::class)
+class NativeAudioProcessor : BaseAudioProcessor() {
+
+    companion object {
+        private const val TAG = "NativeAudioProcessor"
+        init {
+            try {
+                System.loadLibrary("dsp")
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to load dsp library", e)
+            }
+        }
+    }
+
+    private var directBuffer: ByteBuffer? = null
+
+    // ===== JNI =====
+    private external fun setSampleRate(sampleRate: Float)
+    private external fun setDrcEnabled(enabled: Boolean)
+    private external fun setReverbMix(mix: Float)
+    private external fun setEqFull(gains: FloatArray)
+    private external fun setBassBoost(gainDb: Float)
+    private external fun setStereoWidth(width: Float)
+    private external fun processAudioDirect(buf: ByteBuffer, size: Int)
+    private external fun getFftData(): FloatArray
+
+    // ===== API =====
+    fun enableDrc(enabled: Boolean) = setDrcEnabled(enabled)
+    fun setReverb(mix: Float) = setReverbMix(mix)
+    fun setEqAll(gains: FloatArray) = setEqFull(gains)
+    fun enableBassBoost(gainDb: Float) = setBassBoost(gainDb)
+    fun setWidth(width: Float) = setStereoWidth(width)
+
+    fun getVisualizer(): FloatArray {
+        val raw = getFftData()
+        val out = FloatArray(raw.size)
+        for (i in raw.indices) out[i] = kotlin.math.log10(1f + raw[i])
+        return out
+    }
+
+    // ===== AudioProcessor Overrides =====
+    override fun onConfigure(inputAudioFormat: AudioFormat): AudioFormat {
+        // Always try to support the input format if it is PCM 16-bit
+        if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) {
+            Log.e(TAG, "Unsupported encoding: ${inputAudioFormat.encoding}")
+            throw AudioProcessor.UnhandledAudioFormatException(inputAudioFormat)
+        }
+        // Pass the actual sample rate to native
+        setSampleRate(inputAudioFormat.sampleRate.toFloat())
+        return inputAudioFormat
+    }
+
+    override fun queueInput(inputBuffer: ByteBuffer) {
+        val size = inputBuffer.remaining()
+        if (size == 0) return
+
+        val bufferToProcess: ByteBuffer
+        if (inputBuffer.isDirect) {
+            bufferToProcess = inputBuffer
+        } else {
+            if (directBuffer == null || directBuffer!!.capacity() < size) {
+                directBuffer = ByteBuffer.allocateDirect(size).order(ByteOrder.nativeOrder())
+            }
+            directBuffer!!.clear()
+            inputBuffer.position()
+            directBuffer!!.put(inputBuffer)
+            directBuffer!!.flip()
+            bufferToProcess = directBuffer!!
+        }
+
+        processAudioDirect(bufferToProcess, size)
+
+        val out = replaceOutputBuffer(size)
+        out.order(ByteOrder.nativeOrder())
+        bufferToProcess.position(0)
+        out.put(bufferToProcess)
+        out.flip()
+    }
+
+    override fun onReset() {
+        super.onReset()
+        directBuffer = null
+    }
+
+    // ===== Presets =====
+    fun setPresetRock() {
+        enableDrc(true)
+        setReverb(0.26f)
+        setWidth(1.1f)
+        setEqAll(floatArrayOf(2f, 1f, 0f, -1f, -1f, 0f, 1f, 2f, 2f, 3f))
+        enableBassBoost(0.9f)
+    }
+
+    fun setPresetPop() {
+        enableDrc(true)
+        setReverb(0.18f)
+        setWidth(1.05f)
+        setEqAll(floatArrayOf(0f, 1f, 1f, 1f, 0f, 0f, 1f, 2f, 2f, 1f))
+        enableBassBoost(0.6f)
+    }
+
+    fun setPresetJazz() {
+        enableDrc(false)
+        setReverb(0.15f)
+        setWidth(0.8f)
+        setEqAll(floatArrayOf(0f, 0f, 1f, 1f, 0f, 0f, 1f, 1f, 0f, 0f))
+        enableBassBoost(0.2f)
+    }
+
+    fun setPresetFlat() {
+        enableDrc(false)
+        setReverb(0f)
+        setWidth(1f)
+        setEqAll(FloatArray(10))
+        enableBassBoost(0f)
+    }
+}

app/src/main/java/com/michatec/radio/helpers/NetworkHelper.kt

@@ -1,17 +1,3 @@
-/*
- * NetworkHelper.kt
- * Implements the NetworkHelper object
- * A NetworkHelper provides helper methods for network related operations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
@@ -19,13 +5,13 @@ import android.net.ConnectivityManager
 import android.net.Network
 import android.util.Log
 import com.michatec.radio.Keys
+import kotlinx.coroutines.suspendCancellableCoroutine
 import java.net.HttpURLConnection
 import java.net.InetAddress
 import java.net.URL
 import java.net.UnknownHostException
 import java.util.*
 import kotlin.coroutines.resume
-import kotlin.coroutines.suspendCoroutine
 
 
 /*
@@ -105,7 +91,7 @@ object NetworkHelper {
 
     /* Suspend function: Detects content type (mime type) from given URL string - async using coroutine */
     suspend fun detectContentTypeSuspended(urlString: String): ContentType {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             cont.resume(detectContentType(urlString))
         }
     }
@@ -113,14 +99,14 @@ object NetworkHelper {
 
     /* Suspend function: Gets a random radio-browser.info api address - async using coroutine */
     suspend fun getRadioBrowserServerSuspended(): String {
-        return suspendCoroutine { cont ->
+        return suspendCancellableCoroutine { cont ->
             val serverAddress: String = try {
                 // get all available radio browser servers
                 val serverAddressList: Array<InetAddress> =
                     InetAddress.getAllByName(Keys.RADIO_BROWSER_API_BASE)
                 // select a random address
                 serverAddressList[Random().nextInt(serverAddressList.size)].canonicalHostName
-            } catch (e: UnknownHostException) {
+            } catch (_: UnknownHostException) {
                 Keys.RADIO_BROWSER_API_DEFAULT
             }
             PreferencesHelper.saveRadioBrowserApiAddress(serverAddress)
@@ -129,7 +115,7 @@ object NetworkHelper {
     }
 
 
-    /* Creates a http connection from given url string */
+    /* Creates an http connection from given url string */
     private fun createConnection(urlString: String, redirectCount: Int = 0): HttpURLConnection? {
         var connection: HttpURLConnection? = null
 

app/src/main/java/com/michatec/radio/helpers/PreferencesHelper.kt

@@ -1,21 +1,8 @@
-/*
- * PreferencesHelper.kt
- * Implements the PreferencesHelper object
- * A PreferencesHelper provides helper methods for the saving and loading values from shared preferences
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
 import android.content.SharedPreferences
+import android.content.pm.PackageManager
 import android.util.Log
 import androidx.core.content.edit
 import androidx.preference.PreferenceManager
@@ -213,20 +200,6 @@ object PreferencesHelper {
     }
 
 
-    /* Checks if housekeeping work needs to be done - used usually in DownloadWorker "REQUEST_UPDATE_COLLECTION" */
-    fun isHouseKeepingNecessary(): Boolean {
-        return sharedPreferences.getBoolean(Keys.PREF_ONE_TIME_HOUSEKEEPING_NECESSARY, true)
-    }
-
-
-    /* Saves state of housekeeping */
-    fun saveHouseKeepingNecessaryState(state: Boolean = false) {
-        sharedPreferences.edit {
-            putBoolean(Keys.PREF_ONE_TIME_HOUSEKEEPING_NECESSARY, state)
-        }
-    }
-
-
     /* Load currently selected app theme */
     fun loadThemeSelection(): String {
         return sharedPreferences.getString(
@@ -236,23 +209,24 @@ object PreferencesHelper {
     }
 
 
-    /* Loads value of the option: Edit Stations */
-    fun loadEditStationsEnabled(): Boolean {
-        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STATIONS, true)
-    }
-
-
-    /* Saves value of the option: Edit Stations (only needed for migration) */
-    fun saveEditStationsEnabled(enabled: Boolean = false) {
+    /* Save currently selected app theme */
+    fun saveThemeSelection(theme: String) {
         sharedPreferences.edit {
-            putBoolean(Keys.PREF_EDIT_STATIONS, enabled)
+            putString(Keys.PREF_THEME_SELECTION, theme)
         }
     }
 
 
+    /* Loads value of the option: Edit Stations */
+    fun loadEditStationsEnabled(context: Context): Boolean {
+        val defaultValue = !context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STATIONS, defaultValue)
+    }
+
     /* Loads value of the option: Edit Station Streams */
-    fun loadEditStreamUrisEnabled(): Boolean {
-        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STREAMS_URIS, true)
+    fun loadEditStreamUrisEnabled(context: Context): Boolean {
+        val defaultValue = !context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)
+        return sharedPreferences.getBoolean(Keys.PREF_EDIT_STREAMS_URIS, defaultValue)
     }
 
 
@@ -276,8 +250,99 @@ object PreferencesHelper {
     fun downloadOverMobile(): Boolean {
         return sharedPreferences.getBoolean(
             Keys.PREF_DOWNLOAD_OVER_MOBILE,
-            Keys.DEFAULT_DOWNLOAD_OVER_MOBILE
+            false
         )
     }
 
+
+    /* Loads Bass Boost gain */
+    fun loadBassBoost(): Float {
+        return if (sharedPreferences.getBoolean(Keys.PREF_BASS_BOOST, false)) 1f else 0.0f
+    }
+
+
+    /* Loads Reverb mix */
+    fun loadReverb(): Float {
+        return if (sharedPreferences.getBoolean(Keys.PREF_REVERB, false)) 0.3f else 0.0f
+    }
+
+
+    /* Loads DRC enabled state */
+    fun loadDrcEnabled(): Boolean {
+        return sharedPreferences.getBoolean(Keys.PREF_DRC, false)
+    }
+
+    /* Loads all EQ bands (10 bands for full range) */
+    fun loadEqBand(band: Int): Int {
+        return when (band) {
+            0 -> sharedPreferences.getInt(Keys.PREF_EQ_LOW, 0)
+            1 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_1, 0)
+            2 -> sharedPreferences.getInt(Keys.PREF_EQ_MID, 0)
+            3 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_3, 0)
+            4 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_4, 0)
+            5 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_5, 0)
+            6 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_6, 0)
+            7 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_7, 0)
+            8 -> sharedPreferences.getInt(Keys.PREF_EQ_BAND_8, 0)
+            9 -> sharedPreferences.getInt(Keys.PREF_EQ_HIGH, 0)
+            else -> 0
+        }
+    }
+
+    /* Loads selected preset name */
+    fun loadSelectedPreset(): String {
+        return sharedPreferences.getString(Keys.PREF_PRESET_SELECTED, "") ?: ""
+    }
+
+    /* Saves selected preset name */
+    fun saveSelectedPreset(preset: String) {
+        sharedPreferences.edit { putString(Keys.PREF_PRESET_SELECTED, preset) }
+    }
+
+    /* Loads preset EQ band values */
+    fun loadPresetEqBand(band: Int): Int {
+        return when (band) {
+            0 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_0, 0)
+            1 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_1, 0)
+            2 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_2, 0)
+            3 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_3, 0)
+            4 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_4, 0)
+            5 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_5, 0)
+            6 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_6, 0)
+            7 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_7, 0)
+            8 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_8, 0)
+            9 -> sharedPreferences.getInt(Keys.PREF_PRESET_EQ_BAND_9, 0)
+            else -> 0
+        }
+    }
+
+    /* Loads preset Bass Boost */
+    fun loadPresetBassBoost(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_BASS_BOOST, 0f)
+    }
+
+    /* Loads preset Reverb */
+    fun loadPresetReverb(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_REVERB, 0f)
+    }
+
+    /* Loads preset DRC */
+    fun loadPresetDrc(): Boolean {
+        return sharedPreferences.getBoolean(Keys.PREF_PRESET_DRC, false)
+    }
+
+    /* Loads preset Stereo Width */
+    fun loadPresetStereoWidth(): Float {
+        return sharedPreferences.getFloat(Keys.PREF_PRESET_STEREO_WIDTH, 1f)
+    }
+
+    /* Resets Equalizer settings to default */
+    fun resetEqualizer() {
+        sharedPreferences.edit {
+            putInt(Keys.PREF_EQ_LOW, 0)
+            putInt(Keys.PREF_EQ_MID, 0)
+            putInt(Keys.PREF_EQ_HIGH, 0)
+        }
+    }
+
 }

app/src/main/java/com/michatec/radio/helpers/ShortcutHelper.kt

@@ -1,23 +1,8 @@
-/*
- * ShortcutHelper.kt
- * Implements the ShortcutHelper object
- * A ShortcutHelper creates and handles station shortcuts on the Home screen
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context
 import android.content.Intent
 import android.graphics.Bitmap
-import android.os.Build
 import android.widget.Toast
 import androidx.core.content.pm.ShortcutInfoCompat
 import androidx.core.content.pm.ShortcutManagerCompat
@@ -36,7 +21,6 @@ object ShortcutHelper {
 
     /* Places shortcut on Home screen */
     fun placeShortcut(context: Context, station: Station) {
-        // credit: https://medium.com/@BladeCoder/using-support-library-26-0-0-you-can-do-bb75911e01e8
         if (ShortcutManagerCompat.isRequestPinShortcutSupported(context)) {
             val shortcut: ShortcutInfoCompat = ShortcutInfoCompat.Builder(context, station.name)
                 .setShortLabel(station.name)
@@ -73,27 +57,15 @@ object ShortcutHelper {
     ): IconCompat {
         val stationImageBitmap: Bitmap =
             ImageHelper.getScaledStationImage(context, stationImage.toUri(), 192)
-        return if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            IconCompat.createWithAdaptiveBitmap(
-                ImageHelper.createSquareImage(
-                    context,
-                    stationImageBitmap,
-                    stationImageColor,
-                    192,
-                    true
-                )
-            )
-        } else {
-            IconCompat.createWithAdaptiveBitmap(
-                ImageHelper.createSquareImage(
-                    context,
-                    stationImageBitmap,
-                    stationImageColor,
-                    192,
-                    false
-                )
-            )
-        }
-    }
 
+        return IconCompat.createWithAdaptiveBitmap(
+            ImageHelper.createSquareImage(
+                context,
+                stationImageBitmap,
+                stationImageColor,
+                192,
+                true
+            )
+        )
+    }
 }

app/src/main/java/com/michatec/radio/helpers/UiHelper.kt

@@ -1,17 +1,3 @@
-/*
- * UiHelper.kt
- * Implements the UiHelper object
- * A UiHelper provides helper methods for User Interface related tasks
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context

app/src/main/java/com/michatec/radio/helpers/UpdateHelper.kt

@@ -1,17 +1,3 @@
-/*
- * UpdateHelper.kt
- * Implements the UpdateHelper class
- * A UpdateHelper provides methods to update a single station or the whole collection of stations
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.helpers
 
 import android.content.Context

app/src/main/java/com/michatec/radio/search/DirectInputCheck.kt

@@ -1,17 +1,3 @@
-/*
- * DirectInputCheck.kt
- * Implements the DirectInputCheck class
- * A DirectInputCheck checks if a station url is valid and returns station via a listener
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-23 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context

app/src/main/java/com/michatec/radio/search/RadioBrowserResult.kt

@@ -1,17 +1,3 @@
-/*
- * RadioBrowserResult.kt
- * Implements the RadioBrowserResult class
- * A RadioBrowserResult is the search result of a request to api.radio-browser.info
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import com.google.gson.annotations.Expose

app/src/main/java/com/michatec/radio/search/RadioBrowserSearch.kt

@@ -1,17 +1,3 @@
-/*
- * RadioBrowserSearch.kt
- * Implements the RadioBrowserSearch class
- * A RadioBrowserSearch performs searches on the radio-browser.info database
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context
@@ -129,7 +115,7 @@ class RadioBrowserSearch(private var radioBrowserSearchListener: RadioBrowserSea
 
 
     /* Listens for (positive) server responses to search requests */
-    private val responseListener: Response.Listener<JSONArray> = Response.Listener<JSONArray> { response ->
+    private val responseListener: Response.Listener<JSONArray> = Response.Listener { response ->
         if (response != null) {
             radioBrowserSearchListener.onRadioBrowserSearchResults(createRadioBrowserResult(response.toString()))
         }

app/src/main/java/com/michatec/radio/search/SearchResultAdapter.kt

@@ -1,37 +1,28 @@
-/*
- * SearchResultAdapter.kt
- * Implements the SearchResultAdapter class
- * A SearchResultAdapter is a custom adapter providing search result views for a RecyclerView
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.search
 
 import android.content.Context
 import android.media.AudioAttributes
 import android.media.AudioFocusRequest
 import android.media.AudioManager
-import android.os.Build
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import android.widget.Toast
+import androidx.annotation.OptIn
 import androidx.appcompat.app.AppCompatActivity
 import androidx.lifecycle.DefaultLifecycleObserver
 import androidx.lifecycle.LifecycleOwner
-import androidx.media3.common.MediaItem
+import androidx.media3.common.*
+import androidx.media3.common.util.UnstableApi
+import androidx.media3.exoplayer.DefaultRenderersFactory
 import androidx.media3.exoplayer.ExoPlayer
+import androidx.media3.exoplayer.audio.AudioSink
+import androidx.media3.exoplayer.audio.DefaultAudioSink
 import androidx.recyclerview.widget.RecyclerView
 import com.google.android.material.textview.MaterialTextView
 import com.michatec.radio.R
 import com.michatec.radio.core.Station
+import com.michatec.radio.helpers.NativeAudioProcessor
 
 
 /*
@@ -46,6 +37,7 @@ class SearchResultAdapter(
     private var exoPlayer: ExoPlayer? = null
     private var paused: Boolean = false
     private var isItemSelected: Boolean = false
+    private var nativeAudioProcessor = NativeAudioProcessor()
 
     /* Listener Interface */
     interface SearchResultAdapterListener {
@@ -106,7 +98,7 @@ class SearchResultAdapter(
         }
 
         // mark selected if necessary
-        val isSelected = selectedPosition == holder.adapterPosition
+        val isSelected = selectedPosition == holder.bindingAdapterPosition
         searchResultViewHolder.searchResultLayout.isSelected = isSelected
 
         // toggle text scrolling (marquee) if necessary
@@ -121,7 +113,7 @@ class SearchResultAdapter(
         searchResultViewHolder.searchResultLayout.setOnClickListener {
             // move marked position
             val previousSelectedPosition = selectedPosition
-            selectedPosition = holder.adapterPosition
+            selectedPosition = holder.bindingAdapterPosition
             notifyItemChanged(previousSelectedPosition)
             notifyItemChanged(selectedPosition)
 
@@ -133,7 +125,7 @@ class SearchResultAdapter(
                 resetSelection(false)
             } else {
                 // get the selected station from searchResults
-                val selectedStation = searchResults[holder.adapterPosition]
+                val selectedStation = searchResults[holder.bindingAdapterPosition]
                 // perform pre-playback here
                 performPrePlayback(searchResultViewHolder.searchResultLayout.context, selectedStation.getStreamUri())
                 // hand over station
@@ -153,6 +145,7 @@ class SearchResultAdapter(
     }
 
 
+    @OptIn(UnstableApi::class)
     private fun performPrePlayback(context: Context, streamUri: String) {
         if (streamUri.contains(".m3u8")) {
             // release previous player if it exists
@@ -166,8 +159,30 @@ class SearchResultAdapter(
             // release previous player if it exists
             stopPrePlayback()
 
-            // create a new instance of ExoPlayer
-            exoPlayer = ExoPlayer.Builder(context).build()
+            // set up audio attributes for the preview player
+            val audioAttributes = androidx.media3.common.AudioAttributes.Builder()
+                .setContentType(C.AUDIO_CONTENT_TYPE_MUSIC)
+                .setUsage(C.USAGE_MEDIA)
+                .build()
+
+            // Create a RenderersFactory that injects the NativeAudioProcessor
+            val renderersFactory = object : DefaultRenderersFactory(context) {
+                override fun buildAudioSink(
+                    context: Context,
+                    enableFloatOutput: Boolean,
+                    enableAudioTrackPlaybackParams: Boolean
+                ): AudioSink? {
+                    return DefaultAudioSink.Builder(context)
+                        .setAudioProcessors(arrayOf(nativeAudioProcessor))
+                        .build()
+                }
+            }
+
+            // create a new instance of ExoPlayer with focus handling
+            exoPlayer = ExoPlayer.Builder(context, renderersFactory)
+                .setAudioAttributes(audioAttributes, true)
+                .setHandleAudioBecomingNoisy(true)
+                .build()
 
             // create a MediaItem with the streamUri
             val mediaItem = MediaItem.fromUri(streamUri)
@@ -209,22 +224,16 @@ class SearchResultAdapter(
         // stop radio playback when one is active
         val audioManager = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
 
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            val audioAttributes = AudioAttributes.Builder()
-                .setUsage(AudioAttributes.USAGE_MEDIA)
-                .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
-                .build()
+        val audioAttributes = AudioAttributes.Builder()
+            .setUsage(AudioAttributes.USAGE_MEDIA)
+            .setContentType(AudioAttributes.CONTENT_TYPE_MUSIC)
+            .build()
 
-            val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
-                .setAudioAttributes(audioAttributes)
-                .build()
+        val focusRequest = AudioFocusRequest.Builder(AudioManager.AUDIOFOCUS_GAIN)
+            .setAudioAttributes(audioAttributes)
+            .build()
 
-            audioManager.requestAudioFocus(focusRequest)
-        } else {
-            @Suppress("DEPRECATION")
-            // For older versions where AudioFocusRequest is not available
-            audioManager.requestAudioFocus(null, AudioManager.STREAM_MUSIC, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT)
-        }
+        audioManager.requestAudioFocus(focusRequest)
     }
 
 
@@ -246,7 +255,7 @@ class SearchResultAdapter(
     /*
      * Inner class: ViewHolder for a radio station search result
      */
-    private inner class SearchResultViewHolder(var searchResultLayout: View) :
+    private class SearchResultViewHolder(var searchResultLayout: View) :
         RecyclerView.ViewHolder(searchResultLayout) {
         val nameView: MaterialTextView = searchResultLayout.findViewById(R.id.station_name)
         val streamView: MaterialTextView = searchResultLayout.findViewById(R.id.station_url)

app/src/main/java/com/michatec/radio/ui/LayoutHolder.kt

@@ -1,23 +1,11 @@
-/*
- * LayoutHolder.kt
- * Implements the LayoutHolder class
- * A LayoutHolder hold references to the main views
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.ui
 
+import android.annotation.SuppressLint
 import android.content.ClipData
 import android.content.ClipboardManager
 import android.content.Context
 import android.content.Intent
+import android.content.pm.PackageManager
 import android.graphics.drawable.AnimatedVectorDrawable
 import android.os.Build
 import android.view.View
@@ -31,9 +19,11 @@ import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.constraintlayout.widget.Group
 import androidx.core.view.isGone
 import androidx.core.view.isVisible
+import androidx.mediarouter.app.MediaRouteButton
 import androidx.recyclerview.widget.DefaultItemAnimator
 import androidx.recyclerview.widget.LinearLayoutManager
 import androidx.recyclerview.widget.RecyclerView
+import com.google.android.gms.cast.framework.CastButtonFactory
 import com.google.android.material.bottomsheet.BottomSheetBehavior
 import com.google.android.material.snackbar.Snackbar
 import com.michatec.radio.Keys
@@ -53,30 +43,33 @@ data class LayoutHolder(var rootView: View) {
     /* Main class variables */
     var recyclerView: RecyclerView = rootView.findViewById(R.id.station_list)
     val layoutManager: LinearLayoutManager
-    private var bottomSheet: ConstraintLayout = rootView.findViewById(R.id.bottom_sheet)
+    private var bottomSheet: ConstraintLayout? = rootView.findViewById(R.id.bottom_sheet)
 
     //private var sheetMetadataViews: Group
-    private var sleepTimerRunningViews: Group = rootView.findViewById(R.id.sleep_timer_running_views)
-    private var downloadProgressIndicator: ProgressBar = rootView.findViewById(R.id.download_progress_indicator)
-    private var stationImageView: ImageView = rootView.findViewById(R.id.station_icon)
-    private var stationNameView: TextView = rootView.findViewById(R.id.player_station_name)
-    private var metadataView: TextView = rootView.findViewById(R.id.player_station_metadata)
+    private var sleepTimerRunningViews: Group? = rootView.findViewById(R.id.sleep_timer_running_views)
+    private var downloadProgressIndicator: ProgressBar? = rootView.findViewById(R.id.download_progress_indicator)
+    private var stationImageView: ImageView? = rootView.findViewById(R.id.station_icon)
+    private var stationNameView: TextView? = rootView.findViewById(R.id.player_station_name)
+    private var metadataView: TextView? = rootView.findViewById(R.id.player_station_metadata)
     var playButtonView: ImageButton = rootView.findViewById(R.id.player_play_button)
+    var playerPrevButtonView: ImageButton? = rootView.findViewById(R.id.player_prev_button)
+    var playerNextButtonView: ImageButton? = rootView.findViewById(R.id.player_next_button)
     private var bufferingIndicator: ProgressBar = rootView.findViewById(R.id.player_buffering_indicator)
-    private var sheetStreamingLinkHeadline: TextView = rootView.findViewById(R.id.sheet_streaming_link_headline)
-    private var sheetStreamingLinkView: TextView = rootView.findViewById(R.id.sheet_streaming_link)
-    private var sheetMetadataHistoryHeadline: TextView = rootView.findViewById(R.id.sheet_metadata_headline)
-    private var sheetMetadataHistoryView: TextView = rootView.findViewById(R.id.sheet_metadata_history)
-    private var sheetNextMetadataView: ImageButton = rootView.findViewById(R.id.sheet_next_metadata_button)
-    private var sheetPreviousMetadataView: ImageButton = rootView.findViewById(R.id.sheet_previous_metadata_button)
-    private var sheetCopyMetadataButtonView: ImageButton = rootView.findViewById(R.id.copy_station_metadata_button)
-    private var sheetShareLinkButtonView: ImageView = rootView.findViewById(R.id.sheet_share_link_button)
-    private var sheetBitrateView: TextView = rootView.findViewById(R.id.sheet_bitrate_view)
-    var sheetSleepTimerStartButtonView: ImageButton = rootView.findViewById(R.id.sleep_timer_start_button)
-    var sheetSleepTimerCancelButtonView: ImageButton = rootView.findViewById(R.id.sleep_timer_cancel_button)
+    private var sheetStreamingLinkHeadline: TextView? = rootView.findViewById(R.id.sheet_streaming_link_headline)
+    private var sheetStreamingLinkView: TextView? = rootView.findViewById(R.id.sheet_streaming_link)
+    private var sheetMetadataHistoryHeadline: TextView? = rootView.findViewById(R.id.sheet_metadata_headline)
+    private var sheetMetadataHistoryView: TextView? = rootView.findViewById(R.id.sheet_metadata_history)
+    private var sheetNextMetadataView: ImageButton? = rootView.findViewById(R.id.sheet_next_metadata_button)
+    private var sheetPreviousMetadataView: ImageButton? = rootView.findViewById(R.id.sheet_previous_metadata_button)
+    private var sheetCopyMetadataButtonView: ImageButton? = rootView.findViewById(R.id.copy_station_metadata_button)
+    private var mediaRouteButton: MediaRouteButton? = rootView.findViewById(R.id.media_route_button)
+    private var sheetShareLinkButtonView: ImageView? = rootView.findViewById(R.id.sheet_share_link_button)
+    private var sheetBitrateView: TextView? = rootView.findViewById(R.id.sheet_bitrate_view)
+    var sheetSleepTimerStartButtonView: ImageButton? = rootView.findViewById(R.id.sleep_timer_start_button)
+    var sheetSleepTimerCancelButtonView: ImageButton? = rootView.findViewById(R.id.sleep_timer_cancel_button)
     private var sheetSleepTimerRemainingTimeView: TextView = rootView.findViewById(R.id.sleep_timer_remaining_time)
     private var onboardingLayout: ConstraintLayout = rootView.findViewById(R.id.onboarding_layout)
-    private var bottomSheetBehavior: BottomSheetBehavior<ConstraintLayout> = BottomSheetBehavior.from(bottomSheet)
+    private var bottomSheetBehavior: BottomSheetBehavior<ConstraintLayout>? = bottomSheet?.let { BottomSheetBehavior.from(it) }
     private var metadataHistory: MutableList<String>
     private var metadataHistoryPosition: Int
     private var isBuffering: Boolean
@@ -96,80 +89,91 @@ data class LayoutHolder(var rootView: View) {
         recyclerView.itemAnimator = DefaultItemAnimator()
 
         // set up metadata history next and previous buttons
-        sheetPreviousMetadataView.setOnClickListener {
+        sheetPreviousMetadataView?.setOnClickListener {
             if (metadataHistory.isNotEmpty()) {
                 if (metadataHistoryPosition > 0) {
                     metadataHistoryPosition -= 1
                 } else {
                     metadataHistoryPosition = metadataHistory.size - 1
                 }
-                sheetMetadataHistoryView.text = metadataHistory[metadataHistoryPosition]
+                sheetMetadataHistoryView?.text = metadataHistory[metadataHistoryPosition]
             }
         }
-        sheetNextMetadataView.setOnClickListener {
+        sheetNextMetadataView?.setOnClickListener {
             if (metadataHistory.isNotEmpty()) {
                 if (metadataHistoryPosition < metadataHistory.size - 1) {
                     metadataHistoryPosition += 1
                 } else {
                     metadataHistoryPosition = 0
                 }
-                sheetMetadataHistoryView.text = metadataHistory[metadataHistoryPosition]
+                sheetMetadataHistoryView?.text = metadataHistory[metadataHistoryPosition]
             }
         }
-        sheetMetadataHistoryView.setOnLongClickListener {
+        sheetMetadataHistoryView?.setOnLongClickListener {
             copyMetadataHistoryToClipboard()
             return@setOnLongClickListener true
         }
-        sheetMetadataHistoryHeadline.setOnLongClickListener {
+        sheetMetadataHistoryHeadline?.setOnLongClickListener {
             copyMetadataHistoryToClipboard()
             return@setOnLongClickListener true
         }
 
+        // Set up MediaRouteButton (Google Cast)
+        mediaRouteButton?.let {
+            CastButtonFactory.setUpMediaRouteButton(rootView.context, it)
+        }
+
         // set layout for player
         setupBottomSheet()
     }
 
 
     /* Updates the player views */
+    @SuppressLint("DefaultLocale")
     fun updatePlayerViews(context: Context, station: Station, isPlaying: Boolean) {
-
-        // set default metadata views, when playback has stopped
         if (!isPlaying) {
-            metadataView.text = station.name
-            sheetMetadataHistoryView.text = station.name
-//            sheetMetadataHistoryView.isSelected = true
+            metadataView?.text = station.name
+            sheetMetadataHistoryView?.text = station.name
         }
 
         // update name
-        stationNameView.text = station.name
+        stationNameView?.text = station.name
 
         // toggle text scrolling (marquee) if necessary
-        stationNameView.isSelected = isPlaying
+        stationNameView?.isSelected = isPlaying
 
         // reduce the shadow left and right because of scrolling (Marquee)
-        stationNameView.setFadingEdgeLength(8)
+        stationNameView?.setFadingEdgeLength(8)
 
         // update cover
         if (station.imageColor != -1) {
-            stationImageView.setBackgroundColor(station.imageColor)
+            stationImageView?.setBackgroundColor(station.imageColor)
         }
-        stationImageView.setImageBitmap(ImageHelper.getStationImage(context, station.smallImage))
-        stationImageView.contentDescription = "${context.getString(R.string.descr_player_station_image)}: ${station.name}"
+        stationImageView?.setImageBitmap(ImageHelper.getStationImage(context, station.smallImage))
+        stationImageView?.contentDescription = "${context.getString(R.string.descr_player_station_image)}: ${station.name}"
 
         // update streaming link
-        sheetStreamingLinkView.text = station.getStreamUri()
+        sheetStreamingLinkView?.text = station.getStreamUri()
 
         val bitrateText: CharSequence = if (station.codec.isNotEmpty()) {
             if (station.bitrate == 0) {
                 // show only the codec when the bitrate is at "0" from radio-browser.info API
                 station.codec
             } else {
+                val kiloBytesPerSecond = station.bitrate / 8F
+                val dataRateString = if (kiloBytesPerSecond >= 1000) {
+                    String.format("%.2f mb/s", kiloBytesPerSecond / 1000F)
+                } else {
+                    String.format("%.0f kb/s", kiloBytesPerSecond)
+                }
                 // show the bitrate and codec if the result is available in the radio-browser.info API
                 buildString {
                     append(station.codec)
                     append(" | ")
                     append(station.bitrate)
                     append("kbps")
+                    append(" | ")
+                    append(dataRateString)
                 }
             }
         } else {
@@ -178,50 +182,50 @@ data class LayoutHolder(var rootView: View) {
         }
 
         // update bitrate
-        sheetBitrateView.text = bitrateText
+        sheetBitrateView?.text = bitrateText
 
         // update click listeners
-        sheetStreamingLinkHeadline.setOnClickListener {
+        sheetStreamingLinkHeadline?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetStreamingLinkView.text
+                sheetStreamingLinkView?.text ?: ""
             )
         }
-        sheetStreamingLinkView.setOnClickListener {
+        sheetStreamingLinkView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetStreamingLinkView.text
+                sheetStreamingLinkView?.text ?: ""
             )
         }
-        sheetMetadataHistoryHeadline.setOnClickListener {
+        sheetMetadataHistoryHeadline?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
         }
-        sheetMetadataHistoryView.setOnClickListener {
+        sheetMetadataHistoryView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
         }
-        sheetCopyMetadataButtonView.setOnClickListener {
+        sheetCopyMetadataButtonView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetMetadataHistoryView.text
+                sheetMetadataHistoryView?.text ?: ""
             )
         }
-        sheetBitrateView.setOnClickListener {
+        sheetBitrateView?.setOnClickListener {
             copyToClipboard(
                 context,
-                sheetBitrateView.text
+                sheetBitrateView?.text ?: ""
             )
         }
-        sheetShareLinkButtonView.setOnClickListener {
+        sheetShareLinkButtonView?.setOnClickListener {
             val share = Intent.createChooser(Intent().apply {
                 action = Intent.ACTION_SEND
-                putExtra(Intent.EXTRA_TITLE, stationNameView.text)
-                putExtra(Intent.EXTRA_TEXT, sheetStreamingLinkView.text)
+                putExtra(Intent.EXTRA_TITLE, stationNameView?.text)
+                putExtra(Intent.EXTRA_TEXT, sheetStreamingLinkView?.text ?: "")
                 type = "text/plain"
             }, null)
             context.startActivity(share)
@@ -254,11 +258,11 @@ data class LayoutHolder(var rootView: View) {
     fun updateMetadata(metadataHistoryList: MutableList<String>?) {
         if (!metadataHistoryList.isNullOrEmpty()) {
             metadataHistory = metadataHistoryList
-            if (metadataHistory.last() != metadataView.text) {
+            if (metadataHistory.last() != metadataView?.text) {
                 metadataHistoryPosition = metadataHistory.size - 1
                 val metadataString = metadataHistory[metadataHistoryPosition]
-                metadataView.text = metadataString
-                sheetMetadataHistoryView.text = metadataString
+                metadataView?.text = metadataString
+                sheetMetadataHistoryView?.text = metadataString
             }
         }
     }
@@ -268,14 +272,16 @@ data class LayoutHolder(var rootView: View) {
     fun updateSleepTimer(context: Context, timeRemaining: Long = 0L) {
         when (timeRemaining) {
             0L -> {
-                sleepTimerRunningViews.isGone = true
+                sleepTimerRunningViews?.isGone = true
+                sheetSleepTimerRemainingTimeView.isVisible = false
             }
             else -> {
-                sleepTimerRunningViews.isVisible = true
+                sleepTimerRunningViews?.isVisible = true
+                sheetSleepTimerRemainingTimeView.isVisible = true
                 val sleepTimerTimeRemaining = DateTimeHelper.convertToHoursMinutesSeconds(timeRemaining)
                 sheetSleepTimerRemainingTimeView.text = sleepTimerTimeRemaining
                 sheetSleepTimerRemainingTimeView.contentDescription = "${context.getString(R.string.descr_expanded_player_sleep_timer_remaining_time)}: $sleepTimerTimeRemaining"
-                stationNameView.isSelected = false
+                stationNameView?.isSelected = false
             }
         }
     }
@@ -287,12 +293,10 @@ data class LayoutHolder(var rootView: View) {
             playButtonView.setImageResource(R.drawable.ic_audio_waves_animated)
             val animatedVectorDrawable = playButtonView.drawable as? AnimatedVectorDrawable
             animatedVectorDrawable?.start()
-            sheetSleepTimerStartButtonView.isVisible = true
-            // bufferingIndicator.isVisible = false
+            sheetSleepTimerStartButtonView?.isVisible = true
         } else {
             playButtonView.setImageResource(R.drawable.ic_player_play_symbol_42dp)
-            sheetSleepTimerStartButtonView.isVisible = false
-            // bufferingIndicator.isVisible = isBuffering
+            sheetSleepTimerStartButtonView?.isVisible = false
         }
     }
 
@@ -303,23 +307,11 @@ data class LayoutHolder(var rootView: View) {
         isBuffering = buffering
     }
 
-
-    /* Toggles visibility of player depending on playback state - hiding it when playback is stopped (not paused or playing) */
-//    fun togglePlayerVisibility(context: Context, playbackState: Int): Boolean {
-//        when (playbackState) {
-//            PlaybackStateCompat.STATE_STOPPED -> return hidePlayer(context)
-//            PlaybackStateCompat.STATE_NONE -> return hidePlayer(context)
-//            PlaybackStateCompat.STATE_ERROR -> return hidePlayer(context)
-//            else -> return showPlayer(context)
-//        }
-//    }
-
-
     /* Toggles visibility of the download progress indicator */
     fun toggleDownloadProgressIndicator() {
         when (PreferencesHelper.loadActiveDownloads()) {
-            Keys.ACTIVE_DOWNLOADS_EMPTY -> downloadProgressIndicator.isGone = true
-            else -> downloadProgressIndicator.isVisible = true
+            Keys.ACTIVE_DOWNLOADS_EMPTY -> downloadProgressIndicator?.isGone = true
+            else -> downloadProgressIndicator?.isVisible = true
         }
     }
 
@@ -340,27 +332,27 @@ data class LayoutHolder(var rootView: View) {
 
     /* Initiates the rotation animation of the play button  */
     fun animatePlaybackButtonStateTransition(context: Context, isPlaying: Boolean) {
-        when (isPlaying) {
-            true -> {
-                val rotateClockwise = AnimationUtils.loadAnimation(context, R.anim.rotate_clockwise_slow)
-                rotateClockwise.setAnimationListener(createAnimationListener(true))
-                playButtonView.startAnimation(rotateClockwise)
-            }
-            false -> {
-                val rotateCounterClockwise = AnimationUtils.loadAnimation(context, R.anim.rotate_counterclockwise_fast)
-                rotateCounterClockwise.setAnimationListener(createAnimationListener(false))
-                playButtonView.startAnimation(rotateCounterClockwise)
-            }
-
+        if (context.packageManager.hasSystemFeature(PackageManager.FEATURE_LEANBACK)) {
+            // TV: Toggle play button immediately for snappier feel
+            togglePlayButton(isPlaying)
+        } else {
+            // Handy/Tablet: Rotate the play button
+            val rotateAnimation = AnimationUtils.loadAnimation(context, if (isPlaying) R.anim.rotate_clockwise_slow else R.anim.rotate_counterclockwise_fast)
+            rotateAnimation.setAnimationListener(createAnimationListener(isPlaying))
+            playButtonView.startAnimation(rotateAnimation)
         }
     }
 
 
     /* Shows player */
     fun showPlayer(context: Context): Boolean {
-        UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, Keys.BOTTOM_SHEET_PEEK_HEIGHT)
-        if (bottomSheetBehavior.state == BottomSheetBehavior.STATE_HIDDEN && onboardingLayout.visibility == View.GONE) {
-            bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+        if (bottomSheetBehavior != null) {
+            UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, Keys.BOTTOM_SHEET_PEEK_HEIGHT)
+            if (bottomSheetBehavior?.state == BottomSheetBehavior.STATE_HIDDEN && onboardingLayout.isGone) {
+                bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
+            }
+        } else {
+            UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, 0)
         }
         return true
     }
@@ -369,15 +361,15 @@ data class LayoutHolder(var rootView: View) {
     /* Hides player */
     private fun hidePlayer(context: Context): Boolean {
         UiHelper.setViewMargins(context, recyclerView, 0, 0, 0, 0)
-        bottomSheetBehavior.state = BottomSheetBehavior.STATE_HIDDEN
+        bottomSheetBehavior?.state = BottomSheetBehavior.STATE_HIDDEN
         return true
     }
 
 
     /* Minimizes player sheet if expanded */
     fun minimizePlayerIfExpanded(): Boolean {
-        return if (bottomSheetBehavior.state == BottomSheetBehavior.STATE_EXPANDED) {
-            bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+        return if (bottomSheetBehavior?.state == BottomSheetBehavior.STATE_EXPANDED) {
+            bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
             true
         } else {
             false
@@ -390,7 +382,7 @@ data class LayoutHolder(var rootView: View) {
         return object : Animation.AnimationListener {
             override fun onAnimationStart(animation: Animation) {}
             override fun onAnimationEnd(animation: Animation) {
-                // set up button symbol and playback indicator afterwards
+                // set up button symbol and playback indicator afterward
                 togglePlayButton(isPlaying)
             }
 
@@ -401,38 +393,40 @@ data class LayoutHolder(var rootView: View) {
 
     /* Sets up the player (BottomSheet) */
     private fun setupBottomSheet() {
-        // show / hide the small player
-        bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
-        bottomSheetBehavior.addBottomSheetCallback(object :
-            BottomSheetBehavior.BottomSheetCallback() {
-            override fun onSlide(view: View, slideOffset: Float) {
-            }
-
-            override fun onStateChanged(view: View, state: Int) {
-                when (state) {
-                    BottomSheetBehavior.STATE_COLLAPSED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_DRAGGING -> Unit // do nothing
-                    BottomSheetBehavior.STATE_EXPANDED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_HALF_EXPANDED -> Unit // do nothing
-                    BottomSheetBehavior.STATE_SETTLING -> Unit // do nothing
-                    BottomSheetBehavior.STATE_HIDDEN -> showPlayer(rootView.context)
+        if (bottomSheetBehavior != null) {
+            // show / hide the small player
+            bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
+            bottomSheetBehavior?.addBottomSheetCallback(object :
+                BottomSheetBehavior.BottomSheetCallback() {
+                override fun onSlide(view: View, slideOffset: Float) {
                 }
-            }
-        })
-        // toggle collapsed state on tap
-        bottomSheet.setOnClickListener { toggleBottomSheetState() }
-        stationImageView.setOnClickListener { toggleBottomSheetState() }
-        stationNameView.setOnClickListener { toggleBottomSheetState() }
-        metadataView.setOnClickListener { toggleBottomSheetState() }
+
+                override fun onStateChanged(view: View, state: Int) {
+                    when (state) {
+                        BottomSheetBehavior.STATE_COLLAPSED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_DRAGGING -> Unit // do nothing
+                        BottomSheetBehavior.STATE_EXPANDED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_HALF_EXPANDED -> Unit // do nothing
+                        BottomSheetBehavior.STATE_SETTLING -> Unit // do nothing
+                        BottomSheetBehavior.STATE_HIDDEN -> showPlayer(rootView.context)
+                    }
+                }
+            })
+            // toggle collapsed state on tap
+            bottomSheet?.setOnClickListener { toggleBottomSheetState() }
+            stationImageView?.setOnClickListener { toggleBottomSheetState() }
+            stationNameView?.setOnClickListener { toggleBottomSheetState() }
+            metadataView?.setOnClickListener { toggleBottomSheetState() }
+        }
     }
 
 
     /* Toggle expanded/collapsed state of bottom sheet */
     private fun toggleBottomSheetState() {
-        when (bottomSheetBehavior.state) {
-            BottomSheetBehavior.STATE_COLLAPSED -> bottomSheetBehavior.state =
+        when (bottomSheetBehavior?.state) {
+            BottomSheetBehavior.STATE_COLLAPSED -> bottomSheetBehavior?.state =
                 BottomSheetBehavior.STATE_EXPANDED
-            else -> bottomSheetBehavior.state = BottomSheetBehavior.STATE_COLLAPSED
+            else -> bottomSheetBehavior?.state = BottomSheetBehavior.STATE_COLLAPSED
         }
     }
 
@@ -440,7 +434,7 @@ data class LayoutHolder(var rootView: View) {
     /*
      * Inner class: Custom LinearLayoutManager
      */
-    private inner class CustomLayoutManager(context: Context) :
+    private class CustomLayoutManager(context: Context) :
         LinearLayoutManager(context, VERTICAL, false) {
         override fun supportsPredictiveItemAnimations(): Boolean {
             return true

app/src/main/java/com/michatec/radio/ui/PlayerState.kt

@@ -1,17 +1,3 @@
-/*
- * PlayerState.kt
- * Implements the PlayerState class
- * A PlayerState holds parameters describing the state of the player part of the UI
- *
- * This file is part of
- * TRANSISTOR - Radio App for Android
- *
- * Copyright (c) 2015-22 - Y20K.org
- * Licensed under the MIT-License
- * http://opensource.org/licenses/MIT
- */
-
-
 package com.michatec.radio.ui
 
 import android.os.Parcelable

app/src/main/res/color/selector_card_station_stroke.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/list_card_stroke_focused" android:state_focused="true" />
+    <item android:color="@color/list_card_stroke_background" />
+</selector>

app/src/main/res/drawable/ic_codeberg_24dp.xml

@@ -1,9 +0,0 @@
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="24dp"
-    android:height="24dp"
-    android:viewportWidth="24.0"
-    android:viewportHeight="24.0">
-  <path
-      android:fillColor="@color/icon_default"
-      android:pathData="m11.999,2.623c-5.54,0 -9.999,4.462 -9.999,10.001 -0,1.878 0.529,3.721 1.528,5.313l8.336,-10.778c0.06,-0.077 0.209,-0.077 0.27,0l3.482,4.502h-2.494l0.054,0.199h2.594l0.736,0.949h-3.062l0.086,0.311h3.217l0.647,0.836h-3.631l0.113,0.402h3.827l0.579,0.745h-4.198l0.137,0.49h4.438l0.508,0.655h-4.764l0.152,0.542h5.031l0.468,0.606h-5.33l0.152,0.542h5.598c0.998,-1.592 1.528,-3.435 1.528,-5.313 0,-5.54 -4.462,-10.001 -10.001,-10.001zM15.044,18.543 L15.196,19.085h4.438c0.145,-0.171 0.294,-0.361 0.428,-0.542zM15.365,19.69 L15.515,20.232h2.969c0.194,-0.166 0.405,-0.357 0.594,-0.542zM15.684,20.838 L15.836,21.377h1.003c0.296,-0.17 0.571,-0.343 0.868,-0.539z" />
-</vector>

app/src/main/res/drawable/ic_refresh_24dp.xml

@@ -0,0 +1,17 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+
+    <path
+        android:fillColor="@color/icon_default"
+        android:pathData="M17.65,6.35C16.2,4.9 14.21,4 12,4
+                          7.58,4 4,7.58 4,12h2
+                          c0,-3.31 2.69,-6 6,-6
+                          1.66,0 3.14,0.69 4.22,1.78L13,11h7V4l-2.35,2.35z
+                          M6.35,17.65C7.8,19.1 9.79,20 12,20
+                          c4.42,0 8,-3.58 8,-8h-2
+                          c0,3.31 -2.69,6 -6,6
+                          -1.66,0 -3.14,-0.69 -4.22,-1.78L11,13H4v7l2.35,-2.35z"/>
+</vector>

app/src/main/res/drawable/selector_card_station_background.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/search_result_background_selected" android:state_focused="true" />
+    <item android:drawable="@android:color/transparent" />
+</selector>

app/src/main/res/drawable/selector_card_station_stroke.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@color/list_card_stroke_focused" android:state_focused="true" />
+    <item android:color="@color/list_card_stroke_background" />
+</selector>

app/src/main/res/drawable/selector_generic_button_focus.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:state_focused="true">
+        <shape android:shape="rectangle">
+            <solid android:color="#80FFFFFF" />
+            <corners android:radius="8dp" />
+            <stroke android:width="3dp" android:color="@color/default_neutral_white" />
+        </shape>
+    </item>
+    <item android:drawable="@android:color/transparent" />
+</selector>

app/src/main/res/drawable/selector_search_result_item.xml

@@ -1,8 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <selector xmlns:android="http://schemas.android.com/apk/res/android">
 
-    <!-- View is "selected" -->
+    <!-- View is "selected" or "focused" (for TV) -->
     <item android:drawable="@drawable/shape_search_result_item_selected" android:state_selected="true" />
+    <item android:drawable="@drawable/shape_search_result_item_selected" android:state_focused="true" />
 
     <!-- Default state. -->
     <item android:drawable="@drawable/shape_search_result_item" />

app/src/main/res/drawable/shape_player_button_small_selected.xml

@@ -1,8 +1,8 @@
 <shape xmlns:android="http://schemas.android.com/apk/res/android"
     android:shape="oval">
     <stroke
-        android:width="2dp"
-        android:color="@color/default_neutral_lighter" />
+        android:width="4dp"
+        android:color="@color/default_neutral_white" />
     <size
         android:width="56dp"
         android:height="56dp" />

app/src/main/res/drawable/splash_screen.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:drawable="@color/splashBackgroundColor" />
+    <item
+        android:width="160dp"
+        android:height="160dp"
+        android:gravity="center"
+        android:drawable="@mipmap/ic_launcher" />
+</layer-list>

app/src/main/res/layout-television/bottom_sheet_playback_controls.xml

@@ -0,0 +1,135 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/bottom_sheet"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:background="@drawable/shape_player_sheet_background"
+    android:padding="24dp">
+
+    <com.google.android.material.imageview.ShapeableImageView
+        android:id="@+id/station_icon"
+        android:layout_width="120dp"
+        android:layout_height="120dp"
+        android:background="@drawable/shape_cover_small"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:shapeAppearanceOverlay="@style/RoundedCorners"
+        app:srcCompat="@drawable/ic_default_station_image_72dp" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/player_station_name"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="24dp"
+        android:textAppearance="@style/TextAppearance.Material3.HeadlineMedium"
+        android:textColor="@color/player_sheet_text_main"
+        android:textStyle="bold"
+        app:layout_constraintEnd_toStartOf="@+id/player_play_button"
+        app:layout_constraintStart_toEndOf="@+id/station_icon"
+        app:layout_constraintTop_toTopOf="@+id/station_icon"
+        tools:text="Station Name" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/player_station_metadata"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:textColor="@color/player_sheet_text_main"
+        app:layout_constraintEnd_toEndOf="@+id/player_station_name"
+        app:layout_constraintStart_toStartOf="@+id/player_station_name"
+        app:layout_constraintTop_toBottomOf="@+id/player_station_name"
+        tools:text="Metadata Info" />
+
+    <ImageButton
+        android:id="@+id/player_play_button"
+        android:layout_width="80dp"
+        android:layout_height="80dp"
+        android:background="@drawable/selector_play_button"
+        android:focusable="true"
+        android:scaleType="center"
+        app:layout_constraintBottom_toBottomOf="@+id/station_icon"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@+id/station_icon"
+        app:srcCompat="@drawable/ic_player_play_symbol_42dp" />
+
+    <LinearLayout
+        android:id="@+id/detailed_controls_row"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="32dp"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        app:layout_constraintTop_toBottomOf="@+id/station_icon">
+
+        <ImageButton
+            android:id="@+id/sheet_previous_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_chevron_left_24dp" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/sheet_metadata_history"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:layout_marginHorizontal="16dp"
+            android:textAlignment="center"
+            android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+            android:textColor="@color/player_sheet_text_main"
+            tools:text="Metadata History" />
+
+        <ImageButton
+            android:id="@+id/sheet_next_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_chevron_right_24dp" />
+
+        <ImageButton
+            android:id="@+id/copy_station_metadata_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="16dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_copy_content_24dp" />
+
+        <ImageButton
+            android:id="@+id/sleep_timer_start_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="16dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            app:srcCompat="@drawable/ic_sleep_timer_24dp" />
+
+        <ImageButton
+            android:id="@+id/sleep_timer_cancel_button"
+            android:layout_width="48dp"
+            android:layout_height="48dp"
+            android:layout_marginStart="8dp"
+            android:background="@drawable/selector_generic_button_focus"
+            android:focusable="true"
+            android:visibility="gone"
+            app:srcCompat="@drawable/ic_clear_24dp" />
+
+    </LinearLayout>
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/sleep_timer_remaining_time"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+        android:textColor="@color/player_sheet_text_main"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/detailed_controls_row"
+        tools:text="15:00" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_add_station.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/station_list"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:clipToPadding="false"
+        android:paddingBottom="16dp"
+        android:nextFocusRight="@id/dialog_negative_button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/guideline"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.7" />
+
+    <LinearLayout
+        android:id="@+id/dialog_button_container"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/guideline"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <Button
+            android:id="@+id/dialog_positive_button"
+            style="@style/Widget.Material3.Button"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:nextFocusLeft="@id/station_list"
+            android:text="@string/dialog_find_station_button_add" />
+
+        <Button
+            android:id="@+id/dialog_negative_button"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:nextFocusLeft="@id/station_list"
+            android:text="@string/dialog_generic_button_cancel" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_find_station.xml

@@ -0,0 +1,98 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:padding="16dp">
+
+    <androidx.appcompat.widget.SearchView
+        android:id="@+id/station_search_box_view"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:focusable="true"
+        android:focusableInTouchMode="true"
+        android:clickable="true"
+        android:nextFocusRight="@id/dialog_negative_button"
+        android:nextFocusDown="@id/station_search_result_list"
+        app:iconifiedByDefault="false"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:queryHint="@string/dialog_find_station_hint" />
+
+    <ProgressBar
+        android:id="@+id/search_request_progress_indicator"
+        style="?android:attr/progressBarStyleHorizontal"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:indeterminate="true"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="@+id/station_search_box_view"
+        app:layout_constraintStart_toStartOf="@+id/station_search_box_view"
+        app:layout_constraintTop_toBottomOf="@+id/station_search_box_view" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/no_results_text_view"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_find_station_no_results"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:visibility="gone"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/search_request_progress_indicator" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/station_search_result_list"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
+        android:layout_marginTop="8dp"
+        android:clipToPadding="false"
+        android:paddingBottom="16dp"
+        android:nextFocusRight="@id/dialog_negative_button"
+        android:nextFocusUp="@id/station_search_box_view"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toStartOf="@+id/guideline"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/no_results_text_view" />
+
+    <androidx.constraintlayout.widget.Guideline
+        android:id="@+id/guideline"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        app:layout_constraintGuide_percent="0.7" />
+
+    <!-- Right side: Actions -->
+    <LinearLayout
+        android:id="@+id/dialog_button_container"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:padding="16dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/guideline"
+        app:layout_constraintTop_toTopOf="parent">
+
+        <Button
+            android:id="@+id/dialog_positive_button"
+            style="@style/Widget.Material3.Button"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:nextFocusUp="@id/station_search_box_view"
+            android:nextFocusLeft="@id/station_search_result_list"
+            android:text="@string/dialog_find_station_button_add" />
+
+        <Button
+            android:id="@+id/dialog_negative_button"
+            style="@style/Widget.Material3.Button.TextButton"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="12dp"
+            android:nextFocusLeft="@id/station_search_result_list"
+            android:text="@string/dialog_generic_button_cancel" />
+
+    </LinearLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_generic_with_details.xml

@@ -0,0 +1,57 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="800dp"
+    android:layout_height="wrap_content"
+    android:padding="24dp">
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_message"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/dialog_error_message_default"
+        android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+        android:textColor="@color/text_default"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        tools:text="@string/dialog_error_message_default" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_details_link"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="24dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:background="?attr/selectableItemBackground"
+        android:padding="8dp"
+        android:text="@string/dialog_generic_details_button"
+        android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+        android:textColor="@color/text_default"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dialog_message"
+        tools:text="@string/dialog_generic_details_button" />
+
+    <com.google.android.material.textview.MaterialTextView
+        android:id="@+id/dialog_details"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="12dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:scrollbars="vertical"
+        android:text="@string/dialog_opml_import_details_default"
+        android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+        android:textColor="@color/text_default"
+        android:textIsSelectable="true"
+        android:visibility="gone"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/dialog_details_link"
+        tools:text="@string/dialog_opml_import_details_default" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout-television/dialog_preset_selection.xml

@@ -0,0 +1,75 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_preset_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <RadioGroup
+        android:id="@+id/preset_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_preset_none"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_none"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_rock"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_rock"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_pop"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_pop"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_jazz"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_jazz"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_preset_flat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_flat"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout-television/dialog_theme_selection.xml

@@ -0,0 +1,55 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="24dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_theme_selection_title"
+        android:textSize="24sp"
+        android:textStyle="bold"
+        android:paddingBottom="16dp" />
+
+    <RadioGroup
+        android:id="@+id/theme_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_theme_follow_system"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_device_default"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_theme_light"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_light"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+        <RadioButton
+            android:id="@+id/radio_theme_dark"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_dark"
+            android:textSize="20sp"
+            android:padding="12dp"
+            android:focusable="true"
+            android:clickable="true" />
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout-television/element_search_result.xml

@@ -0,0 +1,63 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_marginBottom="8dp"
+    android:focusable="true"
+    android:clickable="true"
+    android:nextFocusRight="@+id/dialog_negative_button"
+    android:background="@drawable/selector_search_result_item">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_margin="16dp">
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_name"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:ellipsize="marquee"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.TitleLarge"
+            android:textColor="@color/text_default"
+            android:textStyle="bold"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            tools:text="Station Name" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_url"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="4dp"
+            android:ellipsize="marquee"
+            android:marqueeRepeatLimit="marquee_forever"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+            android:textColor="@color/text_lightweight"
+            app:layout_constraintEnd_toEndOf="@+id/station_name"
+            app:layout_constraintStart_toStartOf="@+id/station_name"
+            app:layout_constraintTop_toBottomOf="@+id/station_name"
+            tools:text="http://stream.url" />
+
+        <com.google.android.material.textview.MaterialTextView
+            android:id="@+id/station_bitrate"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="2dp"
+            android:singleLine="true"
+            android:textAppearance="@style/TextAppearance.Material3.LabelLarge"
+            android:textColor="@color/text_lightweight"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="@+id/station_url"
+            app:layout_constraintStart_toStartOf="@+id/station_url"
+            app:layout_constraintTop_toBottomOf="@+id/station_url"
+            tools:text="128 kbps" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+</LinearLayout>

app/src/main/res/layout-television/fragment_player.xml

@@ -0,0 +1,206 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="horizontal"
+    android:baselineAligned="false">
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1">
+
+        <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/station_list"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:clipToPadding="false"
+            android:padding="8dp"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintTop_toTopOf="parent" />
+
+        <include
+            layout="@layout/element_onboarding"
+            android:visibility="gone" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <ScrollView
+        android:layout_width="0dp"
+        android:layout_height="match_parent"
+        android:layout_weight="1.2"
+        android:background="@color/player_sheet_background"
+        android:fillViewport="true">
+
+        <androidx.constraintlayout.widget.ConstraintLayout
+            android:id="@+id/player_ui"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:padding="24dp">
+
+            <com.google.android.material.imageview.ShapeableImageView
+                android:id="@+id/station_icon"
+                android:layout_width="160dp"
+                android:layout_height="160dp"
+                android:layout_marginTop="16dp"
+                android:background="@drawable/shape_cover_small"
+                android:contentDescription="@string/descr_player_station_image"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toTopOf="parent"
+                app:shapeAppearanceOverlay="@style/RoundedCorners"
+                app:srcCompat="@drawable/ic_default_station_image_72dp" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/player_station_name"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="16dp"
+                android:ellipsize="marquee"
+                android:marqueeRepeatLimit="marquee_forever"
+                android:singleLine="true"
+                android:textAlignment="center"
+                android:textAppearance="@style/TextAppearance.Material3.HeadlineMedium"
+                android:textColor="@color/player_sheet_text_main"
+                android:textStyle="bold"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/station_icon"
+                tools:text="Station Name" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/player_station_metadata"
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="4dp"
+                android:ellipsize="end"
+                android:singleLine="true"
+                android:textAlignment="center"
+                android:textAppearance="@style/TextAppearance.Material3.BodyLarge"
+                android:textColor="@color/player_sheet_text_main"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/player_station_name"
+                tools:text="Artist - Title" />
+
+            <LinearLayout
+                android:id="@+id/controls_row"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="24dp"
+                android:gravity="center"
+                android:orientation="horizontal"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/player_station_metadata">
+
+                <ImageButton
+                    android:id="@+id/player_prev_button"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_marginEnd="16dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:contentDescription="@string/descr_expanded_player_metadata_previous_button"
+                    android:focusable="true"
+                    android:padding="12dp"
+                    app:srcCompat="@drawable/ic_chevron_left_24dp" />
+
+                <ImageButton
+                    android:id="@+id/player_play_button"
+                    android:layout_width="80dp"
+                    android:layout_height="80dp"
+                    android:background="@drawable/selector_play_button"
+                    android:contentDescription="@string/descr_player_playback_button"
+                    android:focusable="true"
+                    android:scaleType="center"
+                    app:srcCompat="@drawable/ic_player_play_symbol_42dp" />
+
+                <ImageButton
+                    android:id="@+id/player_next_button"
+                    android:layout_width="60dp"
+                    android:layout_height="60dp"
+                    android:layout_marginStart="16dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:contentDescription="@string/descr_expanded_player_metadata_next_button"
+                    android:focusable="true"
+                    android:padding="12dp"
+                    app:srcCompat="@drawable/ic_chevron_right_24dp" />
+
+            </LinearLayout>
+
+            <LinearLayout
+                android:id="@+id/secondary_controls_row"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:gravity="center"
+                android:orientation="horizontal"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/controls_row">
+
+                <ImageButton
+                    android:id="@+id/copy_station_metadata_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:layout_marginEnd="12dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    app:srcCompat="@drawable/ic_copy_content_24dp"
+                    tools:ignore="ContentDescription" />
+
+                <ImageButton
+                    android:id="@+id/sleep_timer_start_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:layout_marginEnd="12dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    app:srcCompat="@drawable/ic_sleep_timer_24dp"
+                    tools:ignore="ContentDescription" />
+
+                <ImageButton
+                    android:id="@+id/sleep_timer_cancel_button"
+                    android:layout_width="48dp"
+                    android:layout_height="48dp"
+                    android:background="@drawable/selector_generic_button_focus"
+                    android:focusable="true"
+                    android:padding="8dp"
+                    android:visibility="gone"
+                    app:srcCompat="@drawable/ic_clear_24dp"
+                    tools:ignore="ContentDescription" />
+
+            </LinearLayout>
+
+            <ProgressBar
+                android:id="@+id/player_buffering_indicator"
+                style="?android:attr/progressBarStyleLarge"
+                android:layout_width="96dp"
+                android:layout_height="96dp"
+                android:indeterminateTint="@color/player_button_buffering"
+                android:visibility="invisible"
+                app:layout_constraintBottom_toBottomOf="@+id/controls_row"
+                app:layout_constraintEnd_toEndOf="@+id/controls_row"
+                app:layout_constraintStart_toStartOf="@+id/controls_row"
+                app:layout_constraintTop_toTopOf="@+id/controls_row" />
+
+            <com.google.android.material.textview.MaterialTextView
+                android:id="@+id/sleep_timer_remaining_time"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_marginTop="12dp"
+                android:textAppearance="@style/TextAppearance.Material3.BodyMedium"
+                android:textColor="@color/player_sheet_text_main"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintTop_toBottomOf="@+id/secondary_controls_row"
+                tools:text="15:00" />
+
+        </androidx.constraintlayout.widget.ConstraintLayout>
+    </ScrollView>
+
+</LinearLayout>

app/src/main/res/layout-television/preference_visualizer.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/visualizer_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FF000000"
+        android:focusable="true" />
+
+</LinearLayout>

app/src/main/res/layout/activity_main.xml

@@ -4,6 +4,8 @@
     xmlns:tools="http://schemas.android.com/tools"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:background="?android:attr/colorBackground"
+    android:fitsSystemWindows="true"
     tools:context=".MainActivity">
 
     <com.google.android.material.appbar.MaterialToolbar
@@ -28,4 +30,49 @@
         app:layout_constraintTop_toBottomOf="@+id/main_toolbar"
         app:navGraph="@navigation/nav_graph_main" />
 
+    <!-- SPLASH / LOADING SCREEN -->
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/loading_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/splashBackgroundColor"
+        android:elevation="10dp"
+        android:visibility="visible">
+
+        <ImageView
+            android:id="@+id/loading_logo"
+            android:layout_width="160dp"
+            android:layout_height="160dp"
+            android:contentDescription="@string/icon_launcher"
+            android:src="@mipmap/ic_launcher"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.4" />
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
+            android:text="@string/loading"
+            android:textAppearance="@style/TextAppearance.Material3.HeadlineSmall"
+            android:textColor="@color/default_neutral_white"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/loading_logo" />
+
+        <ProgressBar
+            style="?android:attr/progressBarStyleHorizontal"
+            android:layout_width="200dp"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="16dp"
+            android:indeterminate="true"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toBottomOf="@+id/loading_logo"
+            android:visibility="invisible" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
 </androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/bottom_sheet_playback_controls.xml

@@ -211,6 +211,18 @@
         app:layout_constraintTop_toBottomOf="@+id/sheet_previous_metadata_button"
         app:srcCompat="@drawable/ic_copy_content_24dp" />
 
+    <androidx.mediarouter.app.MediaRouteButton
+        android:id="@+id/media_route_button"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        android:background="?attr/selectableItemBackgroundBorderless"
+        android:padding="8dp"
+        app:layout_constraintBottom_toBottomOf="@+id/copy_station_metadata_button"
+        app:layout_constraintStart_toEndOf="@+id/copy_station_metadata_button"
+        app:layout_constraintTop_toTopOf="@+id/copy_station_metadata_button"
+        app:mediaRouteButtonTint="@color/player_sheet_text_main" />
+
     <com.google.android.material.textview.MaterialTextView
         android:id="@+id/sheet_bitrate_view"
         android:layout_width="wrap_content"
@@ -290,4 +302,4 @@
         android:visibility="gone"
         app:constraint_referenced_ids="sleep_timer_remaining_time,sleep_timer_cancel_button" />
 
-</androidx.constraintlayout.widget.ConstraintLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

app/src/main/res/layout/card_add_new_station.xml

@@ -12,6 +12,8 @@
         android:layout_marginStart="8dp"
         android:layout_marginTop="10dp"
         android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
         android:stateListAnimator="@null"
         app:backgroundTint="@color/list_card_background"
         app:icon="@drawable/ic_add_24dp"
@@ -20,6 +22,24 @@
         app:strokeColor="@color/list_card_stroke_background"
         app:strokeWidth="3dp" />
 
+    <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
+        android:id="@+id/card_visualizer"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="end"
+        android:layout_marginTop="10dp"
+        android:layout_marginEnd="70dp"
+        android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
+        android:stateListAnimator="@null"
+        app:backgroundTint="@color/list_card_background"
+        app:icon="@drawable/ic_music_note_24dp"
+        app:iconTint="@color/icon_default"
+        app:rippleColor="@color/list_card_stroke_background"
+        app:strokeColor="@color/list_card_stroke_background"
+        app:strokeWidth="3dp" />
+
     <com.google.android.material.floatingactionbutton.ExtendedFloatingActionButton
         android:id="@+id/card_settings"
         android:layout_width="wrap_content"
@@ -28,6 +48,8 @@
         android:layout_marginTop="10dp"
         android:layout_marginEnd="8dp"
         android:layout_marginBottom="24dp"
+        android:focusable="true"
+        android:clickable="true"
         android:stateListAnimator="@null"
         app:backgroundTint="@color/list_card_background"
         app:icon="@drawable/ic_settings_24dp"

app/src/main/res/layout/card_station.xml

@@ -31,6 +31,21 @@
             app:shapeAppearanceOverlay="@style/RoundedCorners"
             app:srcCompat="@drawable/ic_default_station_image_72dp" />
 
+        <ProgressBar
+            android:id="@+id/download_progress"
+            style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+            android:layout_width="0dp"
+            android:layout_height="4dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginTop="8dp"
+            android:progressTint="@color/player_button_background"
+            android:visibility="gone"
+            app:layout_constraintEnd_toEndOf="@+id/station_icon"
+            app:layout_constraintStart_toStartOf="@+id/station_icon"
+            app:layout_constraintTop_toTopOf="@+id/station_icon"
+            tools:visibility="visible" />
+
         <com.google.android.material.imageview.ShapeableImageView
             android:id="@+id/change_image_view"
             android:layout_width="0dp"
@@ -155,6 +170,21 @@
             app:layout_constraintEnd_toStartOf="@+id/save_button"
             app:layout_constraintTop_toTopOf="@+id/save_button" />
 
+        <ProgressBar
+            android:id="@+id/buffering_progress"
+            style="@style/Widget.AppCompat.ProgressBar.Horizontal"
+            android:layout_width="0dp"
+            android:layout_height="4dp"
+            android:layout_marginStart="8dp"
+            android:layout_marginEnd="8dp"
+            android:layout_marginBottom="4dp"
+            android:progressTint="@color/player_button_background"
+            android:visibility="gone"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            tools:visibility="visible" />
+
         <androidx.constraintlayout.widget.Group
             android:id="@+id/default_edit_views"
             android:layout_width="0dp"

app/src/main/res/layout/dialog_preset_selection.xml

@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_preset_selection_title"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:paddingBottom="12dp" />
+
+    <RadioGroup
+        android:id="@+id/preset_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_preset_none"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_none"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_rock"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_rock"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_pop"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_pop"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_jazz"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_jazz"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_preset_flat"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_preset_flat"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout/dialog_theme_selection.xml

@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:orientation="vertical"
+    android:padding="16dp">
+
+    <TextView
+        android:id="@+id/dialog_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/pref_theme_selection_title"
+        android:textSize="18sp"
+        android:textStyle="bold"
+        android:paddingBottom="12dp" />
+
+    <RadioGroup
+        android:id="@+id/theme_radio_group"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
+
+        <RadioButton
+            android:id="@+id/radio_theme_follow_system"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_device_default"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_theme_light"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_light"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+        <RadioButton
+            android:id="@+id/radio_theme_dark"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/pref_theme_selection_mode_dark"
+            android:textSize="16sp"
+            android:padding="8dp"/>
+
+    </RadioGroup>
+
+</LinearLayout>

app/src/main/res/layout/preference_visualizer.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <FrameLayout
+        android:id="@+id/visualizer_container"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="#FF000000" />
+
+</LinearLayout>

app/src/main/res/menu/expanded_controller.xml

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/media_route_menu_item"
+        android:title="@string/media_route_menu_title"
+        app:actionProviderClass="androidx.mediarouter.app.MediaRouteActionProvider"
+        app:showAsAction="always" />
+
+</menu>

app/src/main/res/navigation/nav_graph_main.xml

@@ -13,12 +13,43 @@
         <action
             android:id="@+id/action_map_fragment_to_settings_fragment"
             app:destination="@id/settings_destination" />
+        <action
+            android:id="@+id/action_map_fragment_to_visualizer_fragment"
+            app:destination="@id/visualizer_destination" />
+        <action
+            android:id="@+id/action_map_fragment_to_player_to_add_station"
+            app:destination="@id/add_station_destination" />
     </fragment>
 
     <!-- SETTINGS -->
     <fragment
         android:id="@+id/settings_destination"
         android:name="com.michatec.radio.SettingsFragment"
-        android:label="Settings" />
+        android:label="Settings">
+        <action
+            android:id="@+id/action_settings_to_equalizer"
+            app:destination="@id/equalizer_destination" />
+        <action
+            android:id="@+id/action_settings_to_visualizer"
+            app:destination="@id/visualizer_destination" />
+    </fragment>
 
-</navigation>
+    <!-- EQUALIZER -->
+    <fragment
+        android:id="@+id/equalizer_destination"
+        android:name="com.michatec.radio.EqualizerFragment"
+        android:label="Equalizer" />
+
+    <!-- VISUALIZER -->
+    <fragment
+        android:id="@+id/visualizer_destination"
+        android:name="com.michatec.radio.VisualizerFragment"
+        android:label="Visualizer" />
+
+    <!-- ADD STATION (TV) -->
+    <fragment
+        android:id="@+id/add_station_destination"
+        android:name="com.michatec.radio.AddStationFragment"
+        android:label="Add Station"
+        tools:layout="@layout/dialog_find_station" />
+</navigation>

app/src/main/res/values-da/strings.xml

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Appnavn -->
+    <!-- Tilgængelighedsbeskrivelser -->
+    <string name="descr_app_icon">App-ikon i form af en gammel radio</string>
+    <string name="descr_card_small_play_button">Afspil/Stop</string>
+    <string name="descr_card_starred_station">Favoritstation</string>
+    <string name="descr_card_station_image_change">Skift stationsbillede</string>
+    <string name="descr_card_station_image">Stationsbillede</string>
+    <string name="descr_expanded_player_metadata_copy_button">Kopiér oplysninger om den aktuelle afspilning</string>
+    <string name="descr_expanded_player_metadata_next_button">Næste metadataelement, der afspilles nu</string>
+    <string name="descr_expanded_player_metadata_previous_button">Forrige metadataelement, der afspilles</string>
+    <string name="descr_expanded_player_sleep_timer_cancel_button">Annuller soveur</string>
+    <string name="descr_expanded_player_sleep_timer_remaining_time">Resterende tid på soveuret</string>
+    <string name="descr_expanded_player_sleep_timer_start_button">Start soveur</string>
+    <string name="descr_player_playback_button">Afspil/Pause</string>
+    <string name="descr_player_station_image">Stationsbillede</string>
+    <!-- Dialoger -->
+    <string name="dialog_add_station_title">Tilføj station</string>
+    <string name="dialog_edit_station_name">Stationsnavn</string>
+    <string name="dialog_edit_stream_uri">Streamadresse</string>
+    <string name="dialog_error_message_default">Der opstod en fejl</string>
+    <string name="dialog_error_message_no_network">Opret forbindelse til internettet.</string>
+    <string name="dialog_error_title_no_network">Offline</string>
+    <string name="dialog_find_station_button_add">Tilføj</string>
+    <string name="dialog_find_station_hint">Navn eller streamadresse</string>
+    <string name="dialog_find_station_no_results">Ingen resultater fundet.</string>
+    <string name="dialog_find_station_title">Find station</string>
+    <string name="dialog_generic_button_cancel">Annuller</string>
+    <string name="dialog_generic_button_okay">OK</string>
+    <string name="dialog_generic_details_button">Vis detaljer</string>
+    <string name="dialog_opml_import_details_default">Ingen detaljer tilgængelige</string>
+    <string name="dialog_restore_collection_replace_existing">Vil du erstatte din nuværende stationssamling med den fra backup\'en?</string>
+    <string name="dialog_yes_no_message_remove_station">Fjern denne station?</string>
+    <string name="dialog_yes_no_message_update_station_images">Download den nyeste version af alle stationsbilleder?</string>
+    <string name="dialog_yes_no_positive_button_default">Ja</string>
+    <string name="dialog_yes_no_positive_button_remove_station">Fjern</string>
+    <string name="dialog_yes_no_positive_button_update_covers">Opdater</string>
+    <!-- Fragment -->
+    <string name="fragment_settings_title">Indstillinger</string>
+    <!-- Notifikation -->
+    <string name="notification_now_playing_channel_name">Afspilningskontrol</string>
+    <string name="notification_play">Afspil</string>
+    <string name="notification_stop">Stop</string>
+    <string name="notification_skip_to_previous">Forrige</string>
+    <string name="notification_skip_to_next">Næste</string>
+    <!-- Onboarding -->
+    <string name="onboarding_app_description">Fordyb dig i lyden du elsker!</string>
+    <string name="onboarding_app_get_started">Kom i gang</string>
+    <!-- Afspiller -->
+    <string name="player_sheet_h2_station_metadata">Spiller nu</string>
+    <string name="player_sheet_h2_stream_url">Streamadresse</string>
+    <!-- Indstillinger -->
+    <string name="pref_advanced_title">Avanceret</string>
+    <string name="pref_app_version_summary">Version</string>
+    <string name="pref_app_version_title">App-version</string>
+    <string name="pref_backup_import_export_title">Importer &amp; eksporter</string>
+    <string name="pref_buffer_size_summary_disabled">Standardbufferstørrelse bruges til at afspille radiostreams.</string>
+    <string name="pref_buffer_size_summary_enabled">Større buffer aktiveret. Det kan tage længere tid at starte afspilningen.</string>
+    <string name="pref_buffer_size_title">Brug større buffer</string>
+    <string name="pref_edit_station_stream_summary_disabled">Redigering af stream-links er deaktiveret.</string>
+    <string name="pref_edit_station_stream_summary_enabled">Redigering af stream-links er aktiveret. Sørg for at angive en korrekt streamadresse.</string>
+    <string name="pref_edit_station_summary_disabled">Redigering af stationsoplysninger er deaktiveret.</string>
+    <string name="pref_edit_station_summary_enabled">Redigering er aktiveret. Langt tryk for at redigere.</string>
+    <string name="pref_edit_station_title">Rediger station</string>
+    <string name="pref_general_title">Generelt</string>
+    <string name="pref_license_title">Denne app er open source</string>
+    <string name="pref_license_summary">Licenseret under GPLv3-licensen</string>
+    <string name="pref_links_title">Links</string>
+    <string name="pref_m3u_export_summary">Gem stationer som M3U-playlister til brug i andre afspillere.</string>
+    <string name="pref_m3u_export_title">Eksportér M3U-playliste</string>
+    <string name="pref_maintenance_title">Vedligeholdelse</string>
+    <string name="pref_pls_export_summary">Gem stationer som PLS-playlister til brug i andre afspillere.</string>
+    <string name="pref_pls_export_title">Eksportér PLS-playliste</string>
+    <string name="pref_station_export_summary">Gem hele stationssamlingen inkl. billeder på enheden.</string>
+    <string name="pref_station_export_title">Eksportér stationer</string>
+    <string name="pref_station_restore_summary">Gendan stationssamling fra backup. Eksisterende stationer erstattes.</string>
+    <string name="pref_station_restore_title">Importer stationer</string>
+    <string name="pref_theme_selection_mode_dark">Mørkt tema</string>
+    <string name="pref_theme_selection_mode_device_default">Systemstandard</string>
+    <string name="pref_theme_selection_mode_light">Lyst tema</string>
+    <string name="pref_theme_selection_summary">Aktuelt:</string>
+    <string name="pref_theme_selection_title">App-tema</string>
+    <string name="pref_update_station_images_summary">Download nyeste stationsbilleder.</string>
+    <string name="pref_update_station_images_title">Opdater stationsbilleder</string>
+    <!-- App-genveje -->
+    <string name="shortcut_last_station_disabled_message">Genvej til seneste station er deaktiveret.</string>
+    <string name="shortcut_last_station_long_label">Afspil seneste station</string>
+    <string name="shortcut_last_station_short_label">Seneste station</string>
+    <!-- Toasts -->
+    <string name="toastalert_failed_picking_media">Valg af billede mislykkedes.</string>
+    <string name="toastmessage_backed_up">blev sikkerhedskopieret.</string>
+    <string name="toastmessage_connection_failed">Forbindelse kunne ikke oprettes eller gendannes.</string>
+    <string name="toastmessage_copied_to_clipboard">Kopieret til udklipsholder</string>
+    <string name="toastmessage_error_download_error">Fejl under download</string>
+    <string name="toastmessage_error_restart_playback_failed">Kunne ikke starte eller genstarte afspilning</string>
+    <string name="toastmessage_install_file_helper">Installer en filhåndtering</string>
+    <string name="toastmessage_preview_playback_failed">Forhåndsvisning kunne ikke afspilles.</string>
+    <string name="toastmessage_preview_playback_started">Forhåndsvisning startet.</string>
+    <string name="toastmessage_restored">Stationer blev gendannet.</string>
+    <string name="toastmessage_save_m3u">Stationer gemt som M3U…</string>
+    <string name="toastmessage_save_pls">Stationer gemt som PLS…</string>
+    <string name="toastmessage_shortcut_created">Genvej tilføjet til startskærmen</string>
+    <string name="toastmessage_shortcut_not_created">Kunne ikke tilføje genvej. Enheden forhindrer det.</string>
+    <string name="toastmessage_sleep_timer_unable_to_start">Start afspilning først</string>
+    <string name="toastmessage_station_duplicate">Denne station findes allerede</string>
+    <string name="toastmessage_station_not_valid">Denne station findes ikke</string>
+    <string name="toastmessage_updating_collection">Opdaterer alle stationer</string>
+    <string name="toastmessage_updating_station_images">Opdaterer alle stationsbilleder</string>
+    <!-- Snackbars -->
+    <string name="snackbar_show">Vis</string>
+    <string name="snackbar_update_available">er tilgængelig!</string>
+</resources>

app/src/main/res/values-de/strings.xml

@@ -51,6 +51,10 @@
     <string name="player_sheet_h2_station_metadata">Momentan läuft</string>
     <string name="player_sheet_h2_stream_url">Streaming-Adresse</string>
     <!-- Settings -->
+    <string name="pref_update_collection_title">Senderinformationnen aktualisieren</string>
+    <string name="pref_update_collection_summary">Die neueste Version aller Senderinformationen herunterladen.</string>
+    <string name="dialog_yes_no_message_update_collection">Die neueste Version aller Senderinformationen herunterladen?</string>
+    <string name="dialog_yes_no_positive_button_update_collection">Aktualisieren</string>
     <string name="pref_advanced_title">Erweitert</string>
     <string name="pref_app_version_summary">Version</string>
     <string name="pref_app_version_title">App-Version</string>
@@ -66,7 +70,7 @@
     <string name="pref_edit_station_title">Sender bearbeiten</string>
     <string name="pref_general_title">Allgemein</string>
     <string name="pref_license_title">Diese Anwendung ist Open Source</string>
-    <string name="pref_license_summary">Lizenziert unter der MIT License</string>
+    <string name="pref_license_summary">Lizenziert unter der GPLv3 License</string>
     <string name="pref_links_title">Links</string>
     <string name="pref_m3u_export_summary">Radiosender in einer M3U-Playlistdatei sichern, die in andere Player importiert werden können.</string>
     <string name="pref_m3u_export_title">M3U-Playlist exportieren</string>
@@ -113,4 +117,34 @@
     <!-- Snackbars -->
     <string name="snackbar_show">Zeigen</string>
     <string name="snackbar_update_available">ist verfügbar!</string>
+    <string name="pref_audio_effects_title">Audio-Effekte</string>
+    <string name="pref_bass_boost_title">Bass-Boost</string>
+    <string name="pref_bass_boost_summary">Erhöhen Sie die Bassverstärkung.</string>
+    <string name="pref_reverb_title">Hall</string>
+    <string name="pref_reverb_summary">Reverb-Mix anpassen.</string>
+    <string name="pref_drc_title">Dynamikkompression</string>
+    <string name="pref_drc_summary">Den Dynamikbereich für eine gleichbleibende Lautstärke komprimieren.</string>
+    <string name="pref_eq_low_title">Equalizer: 31 Hz</string>
+    <string name="pref_eq_mid_title">Equalizer: 2 kHz</string>
+    <string name="pref_eq_high_title">Equalizer: 16 kHz</string>
+    <string name="pref_eq_band_1_title">Equalizer: 62 Hz</string>
+    <string name="pref_eq_band_2_title">Equalizer: 125 Hz</string>
+    <string name="pref_eq_band_3_title">Equalizer: 250 Hz</string>
+    <string name="pref_eq_band_4_title">Equalizer: 500 Hz</string>
+    <string name="pref_eq_band_5_title">Equalizer: 1 kHz</string>
+    <string name="pref_eq_band_6_title">Equalizer: 4 kHz</string>
+    <string name="pref_eq_band_7_title">Equalizer: 8 kHz</string>
+    <string name="pref_equalizer_title">Equalizer</string>
+    <string name="pref_equalizer_summary">Passen Sie die Audio-Frequenzen an.</string>
+    <string name="pref_equalizer_summary_off">Das Anpassen von den Audio-Frequenzen ist deaktiviert.</string>
+    <string name="pref_equalizer_reset_title">Equalizer zurücksetzen</string>
+    <string name="pref_preset_selection_title">Preset auswählen</string>
+    <string name="pref_preset_selection_summary">Wählen Sie ein Klangprofil</string>
+    <string name="pref_preset_none">Keines (Manuell)</string>
+    <string name="pref_preset_rock">Rock</string>
+    <string name="pref_preset_pop">Pop</string>
+    <string name="pref_preset_jazz">Jazz</string>
+    <string name="pref_preset_flat">Flach</string>
+    <string name="pref_visualizer_title">Spektrumanzeige</string>
+    <string name="pref_visualizer_summary">Sehe die Spektrumanzeige.</string>
 </resources>

app/src/main/res/values-el/strings.xml

@@ -63,7 +63,7 @@
     <string name="pref_edit_station_title">Επεξεργασία Σταθμών</string>
     <string name="pref_general_title">Γενικές ρυθμίσεις</string>
     <string name="pref_license_title">Αυτή η εφαρμογή είναι ανοικτού κώδικα</string>
-    <string name="pref_license_summary">Αδειοδότηση με άδεια MIT</string>
+    <string name="pref_license_summary">Αδειοδότηση με άδεια GPLv3</string>
     <string name="pref_links_title">Σύνδεσμοι</string>
     <string name="pref_m3u_export_summary">Αποθηκεύστε τους ραδιοφωνικούς σας σταθμούς σε ένα αρχείο λίστας αναπαραγωγής M3U που μπορεί να εισαχθεί σε άλλους αναπαραγωγούς.</string>
     <string name="pref_m3u_export_title">Εξαγωγή M3U</string>

app/src/main/res/values-fr/strings.xml

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- Nom de l'application -->
+    <!-- Descriptions d'accessibilité -->
+    <string name="descr_app_icon">Icône de lapplication en forme dancienne radio</string>
+    <string name="descr_card_small_play_button">Démarrer/Arrêter</string>
+    <string name="descr_card_starred_station">Station favorite</string>
+    <string name="descr_card_station_image_change">Changer limage de la station</string>
+    <string name="descr_card_station_image">Image de la station</string>
+    <string name="descr_expanded_player_metadata_copy_button">Copier les informations de lecture actuelles</string>
+    <string name="descr_expanded_player_metadata_next_button">Entrée suivante des métadonnées en cours de lecture</string>
+    <string name="descr_expanded_player_metadata_previous_button">Entrée précédente des métadonnées en cours de lecture</string>
+    <string name="descr_expanded_player_sleep_timer_cancel_button">Annuler la minuterie de sommeil</string>
+    <string name="descr_expanded_player_sleep_timer_remaining_time">Temps restant de la minuterie de sommeil</string>
+    <string name="descr_expanded_player_sleep_timer_start_button">Démarrer la minuterie de sommeil</string>
+    <string name="descr_player_playback_button">Lecture/Pause</string>
+    <string name="descr_player_station_image">Image de la station</string>
+    <!-- Dialogues -->
+    <string name="dialog_add_station_title">Ajouter une station</string>
+    <string name="dialog_edit_station_name">Nom de la station</string>
+    <string name="dialog_edit_stream_uri">Adresse du flux</string>
+    <string name="dialog_error_message_default">Une erreur est survenue</string>
+    <string name="dialog_error_message_no_network">Connectez-vous à Internet.</string>
+    <string name="dialog_error_title_no_network">Hors ligne</string>
+    <string name="dialog_find_station_button_add">Ajouter</string>
+    <string name="dialog_find_station_hint">Nom ou adresse du flux</string>
+    <string name="dialog_find_station_no_results">Aucun résultat trouvé.</string>
+    <string name="dialog_find_station_title">Trouver une station</string>
+    <string name="dialog_generic_button_cancel">Annuler</string>
+    <string name="dialog_generic_button_okay">OK</string>
+    <string name="dialog_generic_details_button">Afficher les détails</string>
+    <string name="dialog_opml_import_details_default">Aucun détail disponible</string>
+    <string name="dialog_restore_collection_replace_existing">Voulez-vous remplacer votre collection actuelle de stations par celle de la sauvegarde ?</string>
+    <string name="dialog_yes_no_message_remove_station">Supprimer cette station ?</string>
+    <string name="dialog_yes_no_message_update_station_images">Télécharger la dernière version de toutes les images des stations ?</string>
+    <string name="dialog_yes_no_positive_button_default">Oui</string>
+    <string name="dialog_yes_no_positive_button_remove_station">Supprimer</string>
+    <string name="dialog_yes_no_positive_button_update_covers">Mettre à jour</string>
+    <!-- Fragment -->
+    <string name="fragment_settings_title">Paramètres</string>
+    <!-- Notification -->
+    <string name="notification_now_playing_channel_name">Contrôle de lecture</string>
+    <string name="notification_play">Lecture</string>
+    <string name="notification_stop">Arrêt</string>
+    <string name="notification_skip_to_previous">Précédent</string>
+    <string name="notification_skip_to_next">Suivant</string>
+    <!-- Onboarding -->
+    <string name="onboarding_app_description">Plongez dans le son de votre choix !</string>
+    <string name="onboarding_app_get_started">Commencer maintenant</string>
+    <!-- Lecteur -->
+    <string name="player_sheet_h2_station_metadata">En cours de lecture</string>
+    <string name="player_sheet_h2_stream_url">Adresse du flux</string>
+    <!-- Paramètres -->
+    <string name="pref_advanced_title">Avancé</string>
+    <string name="pref_app_version_summary">Version</string>
+    <string name="pref_app_version_title">Version de lapplication</string>
+    <string name="pref_backup_import_export_title">Importer &amp; Exporter</string>
+    <string name="pref_buffer_size_summary_disabled">La taille de tampon standard est utilisée pour la lecture du flux radio.</string>
+    <string name="pref_buffer_size_summary_enabled">Taille de tampon plus grande activée. La lecture peut prendre plus de temps à démarrer.</string>
+    <string name="pref_buffer_size_title">Utiliser un tampon plus grand</string>
+    <string name="pref_edit_station_stream_summary_disabled">La modification des liens de streaming est désactivée.</string>
+    <string name="pref_edit_station_stream_summary_enabled">La modification des liens de streaming est activée. Assurez-vous dentrer une adresse de flux correcte.</string>
+    <string name="pref_edit_station_summary_disabled">La modification des informations de la station est désactivée.</string>
+    <string name="pref_edit_station_summary_enabled">La modification est activée. Maintenez appuyé pour éditer.</string>
+    <string name="pref_edit_station_title">Modifier la station</string>
+    <string name="pref_general_title">Général</string>
+    <string name="pref_license_title">Cette application est Open Source</string>
+    <string name="pref_license_summary">Sous licence GPLv3</string>
+    <string name="pref_links_title">Liens</string>
+    <string name="pref_m3u_export_summary">Enregistrez les stations dans un fichier de playlist M3U pouvant être importé dans dautres lecteurs.</string>
+    <string name="pref_m3u_export_title">Exporter la playlist M3U</string>
+    <string name="pref_maintenance_title">Maintenance</string>
+    <string name="pref_pls_export_summary">Enregistrez les stations dans un fichier de playlist PLS pouvant être importé dans dautres lecteurs.</string>
+    <string name="pref_pls_export_title">Exporter la playlist PLS</string>
+    <string name="pref_station_export_summary">Sauvegardez toute la collection de stations, y compris les images, sur lappareil.</string>
+    <string name="pref_station_export_title">Exporter les stations</string>
+    <string name="pref_station_restore_summary">Restaurer la collection de stations depuis la sauvegarde. Les stations existantes seront remplacées.</string>
+    <string name="pref_station_restore_title">Importer les stations</string>
+    <string name="pref_theme_selection_mode_dark">Thème sombre</string>
+    <string name="pref_theme_selection_mode_device_default">Par défaut du système</string>
+    <string name="pref_theme_selection_mode_light">Thème clair</string>
+    <string name="pref_theme_selection_summary">Actuel :</string>
+    <string name="pref_theme_selection_title">Thème de lapplication</string>
+    <string name="pref_update_station_images_summary">Télécharger la dernière version de toutes les images des stations.</string>
+    <string name="pref_update_station_images_title">Mettre à jour les images des stations</string>
+    <!-- Raccourcis de l'app -->
+    <string name="shortcut_last_station_disabled_message">Raccourci pour lire la dernière station désactivé.</string>
+    <string name="shortcut_last_station_long_label">Lire la dernière station</string>
+    <string name="shortcut_last_station_short_label">Dernière station</string>
+    <!-- Toasts -->
+    <string name="toastalert_failed_picking_media">Sélection dimage échouée.</string>
+    <string name="toastmessage_backed_up">a été sauvegardé avec succès.</string>
+    <string name="toastmessage_connection_failed">La connexion na pas pu être établie ou restaurée.</string>
+    <string name="toastmessage_copied_to_clipboard">Copié dans le presse-papiers</string>
+    <string name="toastmessage_error_download_error">Erreur lors du téléchargement</string>
+    <string name="toastmessage_error_restart_playback_failed">La lecture na pas pu être démarrée ou redémarrée</string>
+    <string name="toastmessage_install_file_helper">Veuillez installer un gestionnaire de fichiers</string>
+    <string name="toastmessage_preview_playback_failed">Lecture de prévisualisation impossible.</string>
+    <string name="toastmessage_preview_playback_started">Lecture de prévisualisation démarrée.</string>
+    <string name="toastmessage_restored">Stations restaurées avec succès.</string>
+    <string name="toastmessage_save_m3u">Stations enregistrées au format M3U…</string>
+    <string name="toastmessage_save_pls">Stations enregistrées au format PLS…</string>
+    <string name="toastmessage_shortcut_created">Raccourci ajouté à lécran daccueil</string>
+    <string name="toastmessage_shortcut_not_created">Impossible dajouter le raccourci. Lappareil lempêche.</string>
+    <string name="toastmessage_sleep_timer_unable_to_start">Veuillez démarrer la lecture dabord</string>
+    <string name="toastmessage_station_duplicate">Cette station existe déjà</string>
+    <string name="toastmessage_station_not_valid">Cette station nexiste pas</string>
+    <string name="toastmessage_updating_collection">Mise à jour de toutes les stations</string>
+    <string name="toastmessage_updating_station_images">Mise à jour de toutes les images des stations</string>
+    <!-- Snackbars -->
+    <string name="snackbar_show">Afficher</string>
+    <string name="snackbar_update_available">est disponible !</string>
+</resources>

app/src/main/res/values-ja/strings.xml

@@ -0,0 +1,114 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <!-- アプリ名 -->
+    <!-- アクセシビリティの説明 -->
+    <string name="descr_app_icon">昔のラジオの形をしたアプリアイコン</string>
+    <string name="descr_card_small_play_button">再生/停止</string>
+    <string name="descr_card_starred_station">お気に入りの局</string>
+    <string name="descr_card_station_image_change">局の画像を変更</string>
+    <string name="descr_card_station_image">局の画像</string>
+    <string name="descr_expanded_player_metadata_copy_button">現在再生中の情報をコピー</string>
+    <string name="descr_expanded_player_metadata_next_button">次の再生中のメタデータ項目</string>
+    <string name="descr_expanded_player_metadata_previous_button">前の再生中のメタデータ項目</string>
+    <string name="descr_expanded_player_sleep_timer_cancel_button">スリープタイマーをキャンセル</string>
+    <string name="descr_expanded_player_sleep_timer_remaining_time">スリープタイマーの残り時間</string>
+    <string name="descr_expanded_player_sleep_timer_start_button">スリープタイマーを開始</string>
+    <string name="descr_player_playback_button">再生/一時停止</string>
+    <string name="descr_player_station_image">局の画像</string>
+    <!-- ダイアログ -->
+    <string name="dialog_add_station_title">局を追加</string>
+    <string name="dialog_edit_station_name">局名</string>
+    <string name="dialog_edit_stream_uri">ストリームアドレス</string>
+    <string name="dialog_error_message_default">エラーが発生しました</string>
+    <string name="dialog_error_message_no_network">インターネットに接続してください。</string>
+    <string name="dialog_error_title_no_network">オフライン</string>
+    <string name="dialog_find_station_button_add">追加</string>
+    <string name="dialog_find_station_hint">名前またはストリームアドレス</string>
+    <string name="dialog_find_station_no_results">結果が見つかりませんでした。</string>
+    <string name="dialog_find_station_title">局を検索</string>
+    <string name="dialog_generic_button_cancel">キャンセル</string>
+    <string name="dialog_generic_button_okay">OK</string>
+    <string name="dialog_generic_details_button">詳細を表示</string>
+    <string name="dialog_opml_import_details_default">詳細情報はありません</string>
+    <string name="dialog_restore_collection_replace_existing">現在の局のコレクションをバックアップからのものに置き換えますか？</string>
+    <string name="dialog_yes_no_message_remove_station">この局を削除しますか？</string>
+    <string name="dialog_yes_no_message_update_station_images">すべての局の画像を最新に更新しますか？</string>
+    <string name="dialog_yes_no_positive_button_default">はい</string>
+    <string name="dialog_yes_no_positive_button_remove_station">削除</string>
+    <string name="dialog_yes_no_positive_button_update_covers">更新</string>
+    <!-- フラグメント -->
+    <string name="fragment_settings_title">設定</string>
+    <!-- 通知 -->
+    <string name="notification_now_playing_channel_name">再生コントロール</string>
+    <string name="notification_play">再生</string>
+    <string name="notification_stop">停止</string>
+    <string name="notification_skip_to_previous">前へ</string>
+    <string name="notification_skip_to_next">次へ</string>
+    <!-- オンボーディング -->
+    <string name="onboarding_app_description">お気に入りのサウンドの世界に飛び込もう！</string>
+    <string name="onboarding_app_get_started">今すぐ始める</string>
+    <!-- プレイヤー -->
+    <string name="player_sheet_h2_station_metadata">現在再生中</string>
+    <string name="player_sheet_h2_stream_url">ストリーミングアドレス</string>
+    <!-- 設定 -->
+    <string name="pref_advanced_title">詳細設定</string>
+    <string name="pref_app_version_summary">バージョン</string>
+    <string name="pref_app_version_title">アプリバージョン</string>
+    <string name="pref_backup_import_export_title">インポートとエクスポート</string>
+    <string name="pref_buffer_size_summary_disabled">ラジオストリーム再生には標準のバッファサイズが使用されます。</string>
+    <string name="pref_buffer_size_summary_enabled">大きなバッファを使用すると、再生の開始に時間がかかることがあります。</string>
+    <string name="pref_buffer_size_title">大きなバッファを使用</string>
+    <string name="pref_edit_station_stream_summary_disabled">ストリームリンクの編集は無効です。</string>
+    <string name="pref_edit_station_stream_summary_enabled">ストリームリンクの編集は有効です。正しいURLを入力してください。</string>
+    <string name="pref_edit_station_summary_disabled">局情報の編集は無効です。</string>
+    <string name="pref_edit_station_summary_enabled">局情報の編集は有効です。長押しで編集モードに入ります。</string>
+    <string name="pref_edit_station_title">局を編集</string>
+    <string name="pref_general_title">一般</string>
+    <string name="pref_license_title">このアプリはオープンソースです</string>
+    <string name="pref_license_summary">GPLv3ライセンスで提供されています</string>
+    <string name="pref_links_title">リンク</string>
+    <string name="pref_m3u_export_summary">ラジオ局をM3Uプレイリストとして保存し、他のプレイヤーにインポートできます。</string>
+    <string name="pref_m3u_export_title">M3Uプレイリストをエクスポート</string>
+    <string name="pref_maintenance_title">メンテナンス</string>
+    <string name="pref_pls_export_summary">ラジオ局をPLSプレイリストとして保存し、他のプレイヤーにインポートできます。</string>
+    <string name="pref_pls_export_title">PLSプレイリストをエクスポート</string>
+    <string name="pref_station_export_summary">局と画像を端末にバックアップとして保存します。</string>
+    <string name="pref_station_export_title">局をエクスポート</string>
+    <string name="pref_station_restore_summary">バックアップから局を復元します。現在の局は上書きされます。</string>
+    <string name="pref_station_restore_title">局をインポート</string>
+    <string name="pref_theme_selection_mode_dark">ダークテーマ</string>
+    <string name="pref_theme_selection_mode_device_default">システムデフォルト</string>
+    <string name="pref_theme_selection_mode_light">ライトテーマ</string>
+    <string name="pref_theme_selection_summary">現在：</string>
+    <string name="pref_theme_selection_title">アプリテーマ</string>
+    <string name="pref_update_station_images_summary">すべての局画像を最新に更新します。</string>
+    <string name="pref_update_station_images_title">局画像を更新</string>
+    <!-- ショートカット -->
+    <string name="shortcut_last_station_disabled_message">最後に再生した局のショートカットは無効になっています。</string>
+    <string name="shortcut_last_station_long_label">最後の局を再生</string>
+    <string name="shortcut_last_station_short_label">最後の局</string>
+    <!-- トーストアラート -->
+    <string name="toastalert_failed_picking_media">メディアの選択に失敗しました。</string>
+    <!-- トーストメッセージ -->
+    <string name="toastmessage_backed_up">正常にバックアップされました。</string>
+    <string name="toastmessage_connection_failed">接続に失敗しました。</string>
+    <string name="toastmessage_copied_to_clipboard">クリップボードにコピーしました</string>
+    <string name="toastmessage_error_download_error">ダウンロードエラー</string>
+    <string name="toastmessage_error_restart_playback_failed">再生の開始または再開に失敗しました</string>
+    <string name="toastmessage_install_file_helper">ファイルマネージャーをインストールしてください</string>
+    <string name="toastmessage_preview_playback_failed">プレビュー再生はできません。</string>
+    <string name="toastmessage_preview_playback_started">プレビュー再生を開始しました。</string>
+    <string name="toastmessage_restored">局が正常に復元されました。</string>
+    <string name="toastmessage_save_m3u">M3U形式で局を保存しました…</string>
+    <string name="toastmessage_save_pls">PLS形式で局を保存しました…</string>
+    <string name="toastmessage_shortcut_created">局をホーム画面に追加しました</string>
+    <string name="toastmessage_shortcut_not_created">局をホーム画面に追加できません。デバイスがショートカットの追加を制限しています。</string>
+    <string name="toastmessage_sleep_timer_unable_to_start">再生を開始してください</string>
+    <string name="toastmessage_station_duplicate">この局はすでに存在します</string>
+    <string name="toastmessage_station_not_valid">この局は存在しません</string>
+    <string name="toastmessage_updating_collection">すべての局を更新中</string>
+    <string name="toastmessage_updating_station_images">すべての局画像を更新中</string>
+    <!-- スナックバー -->
+    <string name="snackbar_show">表示</string>
+    <string name="snackbar_update_available">が利用可能です！</string>
+</resources>

app/src/main/res/values-night-v31/colors.xml

@@ -32,4 +32,5 @@
     <color name="player_sheet_text_main">@android:color/system_neutral1_50</color>
     <color name="player_sheet_icon">@android:color/system_neutral1_50</color>
 
+    <color name="cardview_reordering">@android:color/system_accent1_100</color>
 </resources>

app/src/main/res/values-night-v31/styles.xml

@@ -11,6 +11,9 @@
         <item name="colorOnSurfaceVariant">@android:color/system_accent1_100</item>
         <item name="android:colorBackground">@android:color/system_neutral1_900</item>
         <item name="android:textColorHighlight">@android:color/system_accent1_500</item>
+        <item name="colorControlHighlight">#33FFFFFF</item>
+        <item name="android:colorControlHighlight">#33FFFFFF</item>
+        <item name="android:colorFocusedHighlight">#80FFFFFF</item>
 
         <!-- Do not use primary colored elevation overlays to present a visual hierarchy - TOO COLORFUL  -->
         <item name="elevationOverlayEnabled">false</item>
@@ -28,9 +31,6 @@
         <!-- Don't show light status bar -->
         <item name="android:statusBarColor">@android:color/transparent</item>
 
-        <!-- Set Navigation Bar color -->
-        <item name="android:navigationBarColor">@color/player_sheet_background</item>
-
         <!-- Set splash screen icon background color -->
         <item name="android:windowSplashScreenIconBackgroundColor">@color/splashBackgroundColor</item>
     </style>
@@ -39,6 +39,7 @@
         <item name="colorSurface">@color/player_sheet_background</item>
         <item name="materialAlertDialogBodyTextStyle">@style/TextAppearance.MaterialComponents.Body1</item>
         <item name="android:backgroundDimAmount">0.64</item>
+        <item name="colorControlActivated">#FFDAE2FF</item>
     </style>
 
     <style name="ThemeOverlay.App.TimePicker" parent="ThemeOverlay.MaterialComponents.TimePicker">
@@ -49,5 +50,12 @@
         <item name="android:background">@color/player_sheet_background</item>
         <item name="dialogCornerRadius">28dp</item>
         <item name="checkedTextViewStyle">@style/AlertDialog.TextColor</item>
+        <item name="colorControlActivated">#FFDAE2FF</item>
+        <item name="colorControlHighlight">#33FFFFFF</item>
+        <item name="android:colorFocusedHighlight">#80FFFFFF</item>
     </style>
-</resources>
+
+    <style name="AlertDialog.TextColor" parent="@style/TextAppearance.MaterialComponents.Body1">
+        <item name="android:textColor">?attr/colorControlNormal</item>
+    </style>
+</resources>

app/src/main/res/values-night/colors.xml

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
-
 <resources>
     <!-- NIGHT THEME COLORS -->
 
@@ -32,4 +31,5 @@
     <color name="player_sheet_text_main">#FFFFFFFF</color>
     <color name="player_sheet_icon">#FFFFFFFF</color>
 
+    <color name="cardview_reordering">#FFDAE2FF</color>
 </resources>

app/src/main/res/values-night/styles.xml

@@ -7,6 +7,9 @@
         <item name="colorAccent">#FFDAE2FF</item>
         <item name="colorOnPrimary">#FF182E60</item>
         <item name="android:textColorHighlight">#FF495D92</item>
+        <item name="colorControlHighlight">#33FFFFFF</item>
+        <item name="android:colorControlHighlight">#33FFFFFF</item>
+        <item name="android:colorFocusedHighlight">#80FFFFFF</item>
 
         <!-- Do not use primary colored elevation overlays to present a visual hierarchy - TOO COLORFUL  -->
         <item name="elevationOverlayEnabled">false</item>
@@ -24,4 +27,10 @@
         <!-- Don't show light status bar -->
         <item name="android:statusBarColor">@android:color/transparent</item>
     </style>
+
+    <style name="CustomCastExpandedControllerStyle" parent="CastExpandedController">
+        <item name="android:windowBackground">#FFFFFF</item>
+        <item name="castBackground">#FFFFFF</item>
+        <item name="castButtonColor">#FF495D92</item>
+    </style>
 </resources>

app/src/main/res/values-ru/strings.xml

@@ -63,7 +63,7 @@
     <string name="pref_edit_station_title">Редактировать станции</string>
     <string name="pref_general_title">Общие</string>
     <string name="pref_license_title">Это приложение с открытым исходным кодом</string>
-    <string name="pref_license_summary">Лицензировано под лицензией MIT</string>
+    <string name="pref_license_summary">Лицензировано под лицензией GPLv3</string>
     <string name="pref_links_title">Ссылки</string>
     <string name="pref_m3u_export_summary">Сохраните ваши радиостанции в файл плейлиста M3U, который можно импортировать в другие проигрыватели.</string>
     <string name="pref_m3u_export_title">Экспорт M3U</string>
@@ -98,7 +98,7 @@
     <string name="toastmessage_preview_playback_started">Было запущено воспроизведение предварительного просмотра.</string>
     <string name="toastmessage_restored">Станции были успешно восстановлены.</string>
     <string name="toastmessage_save_m3u">Сохранение радиостанций как M3U…</string>
-    <string name="toastmessage_save_pls">Сохранение радиостанций в формате PLS...</string>
+    <string name="toastmessage_save_pls">Сохранение радиостанций в формате PLS</string>
     <string name="toastmessage_shortcut_created">Ярлык создан.</string>
     <string name="toastmessage_shortcut_not_created">Ярлык не создан. Устройство не позволяет создавать ярлыки.</string>
     <string name="toastmessage_sleep_timer_unable_to_start">Пожалуйста, запустите сперва воспроизведение.</string>

app/src/main/res/values-television/styles.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="SplashTheme" parent="Theme.Material3.DayNight.NoActionBar">
+        <item name="android:windowBackground">@drawable/splash_screen</item>
+        <item name="android:statusBarColor">@color/splashBackgroundColor</item>
+    </style>
+</resources>

app/src/main/res/values-uk/strings.xml

@@ -63,7 +63,7 @@
     <string name="pref_edit_station_title">Редагувати станції</string>
     <string name="pref_general_title">Загальні</string>
     <string name="pref_license_title">Цей застосунок має відкритий початковий код</string>
-    <string name="pref_license_summary">На умовах ліцензії MIT</string>
+    <string name="pref_license_summary">На умовах ліцензії GPLv3</string>
     <string name="pref_links_title">Посилання</string>
     <string name="pref_m3u_export_summary">Збережіть свої радіостанції у файлі списку відтворення M3U, який можна імпортувати в інші програвачі.</string>
     <string name="pref_m3u_export_title">Експорт M3U</string>

app/src/main/res/values-v27/styles.xml

@@ -1,26 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<resources>
-
-    <style name="AppTheme" parent="Theme.Material3.DayNight.NoActionBar">
-        <!-- Set AppCompat’s colors -->
-        <item name="colorPrimary">#FF495D92</item>
-        <item name="colorAccent">#FF495D92</item>
-        <item name="android:textColorHighlight">#FF495D92</item>
-
-        <!-- Do not use primary colored elevation overlays to present a visual hierarchy - TOO COLORFUL  -->
-        <item name="elevationOverlayEnabled">false</item>
-
-        <!-- Switch Theming  -->
-        <item name="switchPreferenceCompatStyle">@style/Preference.SwitchPreferenceCompat.Material3</item>
-
-        <!-- Material Alert Dialog Theming -->
-        <item name="alertDialogTheme">@style/ThemeOverlay.App.AlertDialogTheme</item>
-
-        <!-- Use "light" Status Bar -->
-        <item name="android:windowLightStatusBar">true</item>
-        <item name="android:statusBarColor">@android:color/transparent</item>
-
-        <!-- Use "light" Navigation Bar -->
-        <item name="android:windowLightNavigationBar">true</item>
-    </style>
-</resources>