ui(settings): move app version to top of preference screen

.gitignore

@@ -6,4 +6,5 @@
 /build
 /captures
 /gradle/gradle-daemon-jvm.properties
-/.kotlin
+/.kotlin
+/app/.cxx/

app/build.gradle

@@ -19,9 +19,14 @@ android {
         applicationId 'com.michatec.radio'
         minSdk 28
         targetSdk 36
-        versionCode 144
-        versionName '14.4'
+        versionCode 145
+        versionName '14.5'
         resourceConfigurations += ['en', 'de', 'el', 'nl', 'pl', 'ru','uk', 'ja', 'da', 'fr']
+        externalNativeBuild {
+            cmake {
+                cppFlags ''
+            }
+        }
     }
 
     compileOptions {
@@ -49,6 +54,12 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
         }
     }
+    externalNativeBuild {
+        cmake {
+            path file('src/main/cpp/CMakeLists.txt')
+            version '3.22.1'
+        }
+    }
 }
 
 dependencies {
@@ -57,6 +68,7 @@ dependencies {
     // Google Stuff //
     implementation libs.material
     implementation libs.gson
+    implementation libs.play.services.cast.framework
 
     // AndroidX Stuff //
     implementation libs.core.ktx
@@ -67,6 +79,7 @@ dependencies {
     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

app/src/main/AndroidManifest.xml

@@ -32,7 +32,6 @@
         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" />
@@ -40,6 +39,17 @@
             android:name="com.google.android.gms.car.notification.SmallIcon"
             android:resource="@mipmap/ic_launcher" />
 
+        <!-- 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"
@@ -48,54 +58,41 @@
             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 -->
-            <!-- This is intended as an App Link for specific extensions -->
             <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="*"
-                    tools:ignore="AppLinkUrlError" />
+                <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 -->
-            <!-- Note: MIME types prevent strict App Link verification, but are kept as requested -->
             <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="*"
-                    tools:ignore="AppLinkUrlError" />
+                <data android:host="*" tools:ignore="AppLinkUrlError" />
                 <data android:mimeType="audio/x-scpls" />
                 <data android:mimeType="audio/mpegurl" />
                 <data android:mimeType="audio/x-mpegurl" />
@@ -106,11 +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" />
@@ -122,20 +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"
@@ -149,8 +140,6 @@
             </intent-filter>
         </service>
 
-
-        <!-- handles completed downloads -->
         <receiver
             android:name=".helpers.DownloadFinishedReceiver"
             android:exported="true">
@@ -159,8 +148,6 @@
             </intent-filter>
         </receiver>
 
-
-        <!-- handles media buttons -->
         <receiver
             android:name="androidx.media.session.MediaButtonReceiver"
             android:exported="true">
@@ -169,8 +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 +1,38 @@
+
+# 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, ${PROJECT_NAME}
+# is preferred for the same purpose.
+#
+# In order to load a library into your app from Java/Kotlin, you must call
+# System.loadLibrary() and pass the name of the library defined here;
+# for GameActivity/NativeActivity derived applications, the same library name must be
+# used in the AndroidManifest.xml file.
+add_library(${CMAKE_PROJECT_NAME} SHARED
+    # List C/C++ source files with relative paths to this CMakeLists.txt.
+    radio.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(${CMAKE_PROJECT_NAME}
+    # List libraries link to the target library
+    android
+    log)

app/src/main/cpp/radio.cpp

@@ -0,0 +1,192 @@
+#include <jni.h>
+#include <string>
+#include <vector>
+#include <cmath>
+#include <algorithm>
+#include <android/log.h>
+
+// --- DSP Classes ---
+
+/**
+ * Biquad Filter for EQ and Shelving
+ */
+class Biquad {
+public:
+    float a0 = 1.0f, a1 = 0.0f, a2 = 0.0f, b1 = 0.0f, b2 = 0.0f;
+    float z1 = 0.0f, z2 = 0.0f;
+
+    void setPeakingEQ(float sampleRate, float freq, float gainDb, float bandwidth) {
+        float a = powf(10.0f, gainDb / 40.0f);
+        float w0 = 2.0f * static_cast<float>(M_PI) * freq / sampleRate;
+        float alpha = sinf(w0) * sinhf(logf(2.0f) / 2.0f * bandwidth * w0 / sinf(w0));
+
+        float b0 = 1.0f + alpha * a;
+        a1 = -2.0f * cosf(w0);
+        a2 = 1.0f - alpha * a;
+        float b0_inv = 1.0f / (1.0f + alpha / a);
+        b1 = -2.0f * cosf(w0) * b0_inv;
+        b2 = (1.0f - alpha / a) * b0_inv;
+        a0 = b0 * b0_inv;
+        a1 *= b0_inv;
+        a2 *= b0_inv;
+    }
+
+    void setLowShelf(float sampleRate, float frequency, float gainDb, float q) {
+        float a = powf(10.0f, gainDb / 40.0f);
+        float w0 = 2.0f * static_cast<float>(M_PI) * frequency / sampleRate;
+        float alpha = sinf(w0) / 2.0f * sqrtf((a + 1.0f / a) * (1.0f / q - 1.0f) + 2.0f);
+        float cosW0 = cosf(w0);
+
+        float b0 = a * ((a + 1.0f) - (a - 1.0f) * cosW0 + 2.0f * sqrtf(a) * alpha);
+        a1 = 2.0f * a * ((a - 1.0f) - (a + 1.0f) * cosW0);
+        a2 = a * ((a + 1.0f) - (a - 1.0f) * cosW0 - 2.0f * sqrtf(a) * alpha);
+        float b0_inv = 1.0f / ((a + 1.0f) + (a - 1.0f) * cosW0 + 2.0f * sqrtf(a) * alpha);
+        b1 = -2.0f * ((a - 1.0f) + (a + 1.0f) * cosW0) * b0_inv;
+        b2 = ((a + 1.0f) + (a - 1.0f) * cosW0 - 2.0f * sqrtf(a) * alpha) * b0_inv;
+        a0 = b0 * b0_inv;
+        a1 *= b0_inv;
+        a2 *= b0_inv;
+    }
+
+    float process(float in) {
+        float out = in * a0 + z1;
+        z1 = in * a1 + z2 - b1 * out;
+        z2 = in * a2 - b2 * out;
+        return out;
+    }
+};
+
+/**
+ * Dynamic Range Compressor
+ */
+class Compressor {
+public:
+    float threshold = 0.3f;
+    float ratio = 4.0f;
+    float attack = 0.01f;
+    float release = 0.2f;
+    float sampleRate = 44100.0f;
+    float envelope = 0.0f;
+
+    void process(float* buffer, int size) {
+        float attackCoef = expf(-1.0f / (attack * sampleRate));
+        float releaseCoef = expf(-1.0f / (release * sampleRate));
+
+        for (int i = 0; i < size; ++i) {
+            float absInput = std::abs(buffer[i]);
+            if (absInput > envelope)
+                envelope = attackCoef * (envelope - absInput) + absInput;
+            else
+                envelope = releaseCoef * (envelope - absInput) + absInput;
+
+            if (envelope > threshold) {
+                float gainReduction = threshold + (envelope - threshold) / ratio;
+                buffer[i] *= (gainReduction / envelope);
+            }
+        }
+    }
+};
+
+/**
+ * Simple Reverb (Comb Filter based)
+ */
+class Reverb {
+public:
+    std::vector<float> delayLine;
+    int pos = 0;
+    float feedback = 0.4f;
+    float mix = 0.0f;
+
+    Reverb() { delayLine.resize(4410, 0.0f); } // ~100ms
+
+    float process(float in) {
+        float delayed = delayLine[static_cast<size_t>(pos)];
+        delayLine[static_cast<size_t>(pos)] = in + delayed * feedback;
+        pos = (pos + 1) % static_cast<int>(delayLine.size());
+        return in + delayed * mix;
+    }
+};
+
+// --- Global Engine State ---
+Compressor gCompressor;
+Reverb gReverb;
+std::vector<Biquad> gEqBands(10);
+Biquad gBassBoost;
+
+bool gDrcEnabled = false;
+bool gReverbEnabled = false;
+bool gEqEnabled = false;
+bool gBassBoostEnabled = false;
+
+extern "C" {
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_NativeAudioProcessor_setDrcEnabled(JNIEnv *env, jobject thiz, jboolean enabled) {
+    gDrcEnabled = enabled;
+}
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_NativeAudioProcessor_setReverbMix(JNIEnv *env, jobject thiz, jfloat mix) {
+    gReverb.mix = mix;
+    gReverbEnabled = (mix > 0.01f);
+}
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_NativeAudioProcessor_setEqBand(JNIEnv *env, jobject thiz, jint band, jfloat gainDb) {
+    float freqs[] = {31.25f, 62.5f, 125.0f, 250.0f, 500.0f, 1000.0f, 2000.0f, 4000.0f, 8000.0f, 16000.0f};
+    if (band >= 0 && band < 10) {
+        gEqBands[static_cast<size_t>(band)].setPeakingEQ(44100.0f, freqs[band], gainDb, 1.0f);
+        gEqEnabled = true;
+    }
+}
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_NativeAudioProcessor_setBassBoost(JNIEnv *env, jobject thiz, jfloat gainDb) {
+    if (gainDb > 0.0f) {
+        gBassBoost.setLowShelf(44100.0f, 150.0f, gainDb, 0.707f);
+        gBassBoostEnabled = true;
+    } else {
+        gBassBoostEnabled = false;
+    }
+}
+
+JNIEXPORT void JNICALL
+Java_com_michatec_radio_helpers_NativeAudioProcessor_processAudio(JNIEnv *env, jobject thiz, jshortArray data, jint size) {
+    jshort *buffer = env->GetShortArrayElements(data, nullptr);
+    if (!buffer) return;
+
+    std::vector<float> floatBuf(static_cast<size_t>(size));
+    for (int i = 0; i < size; ++i) floatBuf[static_cast<size_t>(i)] = static_cast<float>(buffer[i]) / 32768.0f;
+
+    // Apply EQ
+    if (gEqEnabled) {
+        for (auto &band : gEqBands) {
+            for (int i = 0; i < size; ++i) floatBuf[static_cast<size_t>(i)] = band.process(floatBuf[static_cast<size_t>(i)]);
+        }
+    }
+
+    // Apply Bass Boost
+    if (gBassBoostEnabled) {
+        for (int i = 0; i < size; ++i) floatBuf[static_cast<size_t>(i)] = gBassBoost.process(floatBuf[static_cast<size_t>(i)]);
+    }
+
+    // Apply Reverb
+    if (gReverbEnabled) {
+        for (int i = 0; i < size; ++i) floatBuf[static_cast<size_t>(i)] = gReverb.process(floatBuf[static_cast<size_t>(i)]);
+    }
+
+    // Apply Compressor (at the end to prevent clipping)
+    if (gDrcEnabled) {
+        gCompressor.process(floatBuf.data(), size);
+    }
+
+    // Back to short
+    for (int i = 0; i < size; ++i) {
+        float out = std::max(-1.0f, std::min(1.0f, floatBuf[static_cast<size_t>(i)]));
+        buffer[i] = static_cast<jshort>(out * 32767.0f);
+    }
+
+    env->ReleaseShortArrayElements(data, buffer, 0);
+}
+
+} // extern "C"

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 +1,74 @@
+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
+ */
+class EqualizerFragment : PreferenceFragmentCompat() {
+
+    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()
+            // Manually update SeekBars to 0
+            findPreference<SeekBarPreference>(Keys.PREF_EQ_LOW)?.value = 0
+            findPreference<SeekBarPreference>(Keys.PREF_EQ_MID)?.value = 0
+            findPreference<SeekBarPreference>(Keys.PREF_EQ_HIGH)?.value = 0
+            return@setOnPreferenceClickListener true
+        }
+        screen.addPreference(resetPreference)
+
+        // EQ Low
+        val eqLow = SeekBarPreference(context)
+        eqLow.title = getString(R.string.pref_eq_low_title)
+        eqLow.key = Keys.PREF_EQ_LOW
+        eqLow.setIcon(R.drawable.ic_music_note_24dp)
+        eqLow.min = -12
+        eqLow.max = 12
+        eqLow.showSeekBarValue = true
+        eqLow.setDefaultValue(0)
+        screen.addPreference(eqLow)
+
+        // EQ Mid
+        val eqMid = SeekBarPreference(context)
+        eqMid.title = getString(R.string.pref_eq_mid_title)
+        eqMid.key = Keys.PREF_EQ_MID
+        eqMid.setIcon(R.drawable.ic_music_note_24dp)
+        eqMid.min = -12
+        eqMid.max = 12
+        eqMid.showSeekBarValue = true
+        eqMid.setDefaultValue(0)
+        screen.addPreference(eqMid)
+
+        // EQ High
+        val eqHigh = SeekBarPreference(context)
+        eqHigh.title = getString(R.string.pref_eq_high_title)
+        eqHigh.key = Keys.PREF_EQ_HIGH
+        eqHigh.setIcon(R.drawable.ic_music_note_24dp)
+        eqHigh.min = -12
+        eqHigh.max = 12
+        eqHigh.showSeekBarValue = true
+        eqHigh.setDefaultValue(0)
+        screen.addPreference(eqHigh)
+
+        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

@@ -60,6 +60,12 @@ 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"
 
     // default const values
     const val DEFAULT_SIZE_OF_METADATA_HISTORY: Int = 25
@@ -84,7 +90,6 @@ object Keys {
     const val DIALOG_REMOVE_STATION: Int = 2
     const val DIALOG_UPDATE_STATION_IMAGES: Int = 4
     const val DIALOG_RESTORE_COLLECTION: Int = 5
-    const val DIALOG_THEME_SELECTION: Int = 6
 
     // dialog results
     const val DIALOG_EMPTY_PAYLOAD_STRING: String = ""

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

@@ -27,13 +27,12 @@ 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)
-        
+
         // Free Android
         FreeDroidWarn.showWarningOnUpgrade(this, BuildConfig.VERSION_CODE)
 
@@ -46,7 +45,8 @@ 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)
@@ -69,9 +69,7 @@ class MainActivity : AppCompatActivity() {
     private fun hideLoadingOverlay() {
         findViewById<View>(R.id.loading_layout)?.let { overlay ->
             if (overlay.isVisible) {
-                overlay.animate()
-                    .alpha(0f)
-                    .setDuration(500)
+                overlay.animate().alpha(0f).setDuration(500)
                     .withEndAction { overlay.visibility = View.GONE }
             }
         }
@@ -90,7 +88,8 @@ class MainActivity : AppCompatActivity() {
 
     /* Overrides onSupportNavigateUp from AppCompatActivity */
     override fun onSupportNavigateUp(): Boolean {
-        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

@@ -402,6 +402,7 @@ class PlayerFragment : Fragment(),
 
     /* Releases MediaController */
     private fun releaseController() {
+        controller?.removeListener(playerListener)
         MediaController.releaseFuture(controllerFuture)
     }
 
@@ -809,7 +810,7 @@ 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)

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

@@ -10,12 +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
@@ -25,10 +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.*
@@ -38,13 +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
@@ -56,6 +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 */
@@ -76,6 +82,11 @@ class PlayerService : MediaLibraryService() {
         setMediaNotificationProvider(notificationProvider)
         // fetch the metadata history
         metadataHistory = PreferencesHelper.loadMetadataHistory()
+        
+        // register preference change listener
+        PreferencesHelper.registerPreferenceChangeListener(this)
+        // apply initial audio effects
+        applyAudioEffects()
     }
 
 
@@ -85,7 +96,11 @@ class PlayerService : MediaLibraryService() {
         PreferencesHelper.saveIsPlaying(false)
         player.removeListener(playerListener)
         player.release()
+        exoPlayer.release()
+        castPlayer.release()
         mediaLibrarySession.release()
+        // unregister preference change listener
+        PreferencesHelper.unregisterPreferenceChangeListener(this)
         super.onDestroy()
     }
 
@@ -106,8 +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(
@@ -119,7 +152,10 @@ 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
+        // 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
         player = object : ForwardingPlayer(exoPlayer) {
             override fun getAvailableCommands(): Player.Commands {
                 return super.getAvailableCommands().buildUpon().add(COMMAND_SEEK_TO_NEXT)
@@ -246,6 +282,28 @@ class PlayerService : MediaLibraryService() {
     }
 
 
+    /* Applies audio effects based on preferences */
+    private fun applyAudioEffects() {
+        nativeAudioProcessor.enableBassBoost(PreferencesHelper.loadBassBoost())
+        nativeAudioProcessor.setReverb(PreferencesHelper.loadReverb())
+        nativeAudioProcessor.enableDrc(PreferencesHelper.loadDrcEnabled())
+        nativeAudioProcessor.setEq(0, PreferencesHelper.loadEqLow())
+        nativeAudioProcessor.setEq(1, PreferencesHelper.loadEqMid())
+        nativeAudioProcessor.setEq(2, PreferencesHelper.loadEqHigh())
+    }
+
+
+    /* 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 -> {
+                applyAudioEffects()
+            }
+        }
+    }
+
+
     /*
      * Custom MediaSession Callback that handles player commands
      */
@@ -268,7 +326,6 @@ 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))
@@ -494,7 +551,7 @@ 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 {

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

@@ -6,7 +6,6 @@ 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
@@ -186,6 +185,40 @@ 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.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.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.summary = getString(R.string.pref_drc_summary)
+        preferenceDrc.setDefaultValue(true)
+
+        // 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.summary = getString(R.string.pref_equalizer_summary)
+        preferenceEqualizer.setOnPreferenceClickListener {
+            findNavController().navigate(R.id.action_settings_to_equalizer)
+            return@setOnPreferenceClickListener true
+        }
+
         // set up "App Version" preference
         val preferenceAppVersion = Preference(context)
         preferenceAppVersion.title = getString(R.string.pref_app_version_title)
@@ -196,10 +229,7 @@ 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
         }
 
@@ -238,51 +268,54 @@ 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(preferenceEqualizer)
+
         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
     }
 
@@ -491,28 +524,6 @@ 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 {
@@ -549,4 +560,24 @@ class SettingsFragment : PreferenceFragmentCompat(), YesNoDialog.YesNoDialogList
             Log.e(TAG, "Unable to open file picker for ZIP.\n$exception")
         }
     }
+
+    private fun openSavePlsDialog() {
+        val intent = Intent(Intent.ACTION_CREATE_DOCUMENT).apply {
+            addCategory(Intent.CATEGORY_OPENABLE)
+            type = Keys.MIME_TYPE_PLS
+
+            val timeStamp: String
+            val dateFormat = SimpleDateFormat("_yyyy-MM-dd'T'HH_mm", Locale.US)
+            timeStamp = dateFormat.format(Date())
+
+            putExtra(Intent.EXTRA_TITLE, "collection$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/helpers/CollectionHelper.kt

@@ -638,18 +638,23 @@ object CollectionHelper {
         }.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 {

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 +1,58 @@
+package com.michatec.radio.helpers
+
+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 {
+        init {
+            System.loadLibrary("radio")
+        }
+    }
+
+    // JNI Methods
+    private external fun setDrcEnabled(enabled: Boolean)
+    private external fun setReverbMix(mix: Float)
+    private external fun setEqBand(band: Int, gainDb: Float)
+    private external fun setBassBoost(gainDb: Float)
+    private external fun processAudio(data: ShortArray, size: Int)
+
+    // Public API
+    fun enableDrc(enabled: Boolean) = setDrcEnabled(enabled)
+    fun setReverb(mix: Float) = setReverbMix(mix)
+    fun setEq(band: Int, gainDb: Float) = setEqBand(band, gainDb)
+    fun enableBassBoost(gainDb: Float) = setBassBoost(gainDb)
+
+    override fun onConfigure(inputAudioFormat: AudioFormat): AudioFormat {
+        if (inputAudioFormat.encoding != C.ENCODING_PCM_16BIT) {
+            throw AudioProcessor.UnhandledAudioFormatException(inputAudioFormat)
+        }
+        return inputAudioFormat
+    }
+
+    override fun queueInput(inputBuffer: ByteBuffer) {
+        val remaining = inputBuffer.remaining()
+        if (remaining == 0) return
+
+        val shortArraySize = remaining / 2
+        val shortArray = ShortArray(shortArraySize)
+
+        inputBuffer.order(ByteOrder.nativeOrder()).asShortBuffer().get(shortArray)
+
+        processAudio(shortArray, shortArraySize)
+
+        val outputBuffer = replaceOutputBuffer(remaining)
+        outputBuffer.asShortBuffer().put(shortArray)
+        outputBuffer.limit(remaining)
+
+        inputBuffer.position(inputBuffer.limit())
+    }
+}

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

@@ -254,4 +254,36 @@ object PreferencesHelper {
         )
     }
 
+
+    /* Loads Bass Boost gain */
+    fun loadBassBoost(): Float {
+        return if (sharedPreferences.getBoolean(Keys.PREF_BASS_BOOST, false)) 5.0f 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 EQ gains */
+    fun loadEqLow(): Float = sharedPreferences.getInt(Keys.PREF_EQ_LOW, 0).toFloat()
+    fun loadEqMid(): Float = sharedPreferences.getInt(Keys.PREF_EQ_MID, 0).toFloat()
+    fun loadEqHigh(): Float = sharedPreferences.getInt(Keys.PREF_EQ_HIGH, 0).toFloat()
+
+    /* 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/ui/LayoutHolder.kt

@@ -19,9 +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
@@ -60,6 +62,7 @@ data class LayoutHolder(var rootView: View) {
     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)
@@ -115,6 +118,11 @@ data class LayoutHolder(var rootView: View) {
             return@setOnLongClickListener true
         }
 
+        // Set up MediaRouteButton (Google Cast)
+        mediaRouteButton?.let {
+            CastButtonFactory.setUpMediaRouteButton(rootView.context, it)
+        }
+
         // set layout for player
         setupBottomSheet()
     }
@@ -123,8 +131,6 @@ data class LayoutHolder(var rootView: View) {
     /* 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

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/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

@@ -19,6 +19,16 @@
     <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" />
+    </fragment>
 
-</navigation>
+    <!-- EQUALIZER -->
+    <fragment
+        android:id="@+id/equalizer_destination"
+        android:name="com.michatec.radio.EqualizerFragment"
+        android:label="Equalizer" />
+
+</navigation>

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

@@ -55,6 +55,7 @@
     <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_eq_high_title">Equalizer: Höhen</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>
@@ -117,4 +118,16 @@
     <!-- 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: Bass</string>
+    <string name="pref_eq_mid_title">Equalizer: Mitten</string>
+    <string name="pref_equalizer_title">Equalizer</string>
+    <string name="pref_equalizer_summary">Passen Sie die Audio-Frequenzen an.</string>
+    <string name="pref_equalizer_reset_title">Equalizer zurücksetzen</string>
 </resources>

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

@@ -27,4 +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/strings.xml

@@ -63,6 +63,19 @@
     <string name="pref_update_collection_summary">Download latest version of all station.</string>
     <string name="dialog_yes_no_message_update_collection">Download latest version of all station?</string>
     <string name="dialog_yes_no_positive_button_update_collection">Update</string>
+    <string name="pref_audio_effects_title">Audio Effects</string>
+    <string name="pref_bass_boost_title">Bass Boost</string>
+    <string name="pref_bass_boost_summary">Increase bass gain.</string>
+    <string name="pref_reverb_title">Reverb</string>
+    <string name="pref_reverb_summary">Adjust reverb mix.</string>
+    <string name="pref_drc_title">Dynamic Range Compression</string>
+    <string name="pref_drc_summary">Compress dynamic range for consistent volume.</string>
+    <string name="pref_eq_low_title">Equalizer: Low</string>
+    <string name="pref_eq_mid_title">Equalizer: Mid</string>
+    <string name="pref_eq_high_title">Equalizer: High</string>
+    <string name="pref_equalizer_title">Equalizer</string>
+    <string name="pref_equalizer_summary">Adjust audio frequencies</string>
+    <string name="pref_equalizer_reset_title">Reset Equalizer</string>
     <string name="pref_advanced_title">Advanced</string>
     <string name="pref_app_version_summary">Version</string>
     <string name="pref_app_version_title">App Version</string>
@@ -144,4 +157,5 @@
 
     <!-- Extras -->
     <string name="loading">Loading...</string>
+    <string name="media_route_menu_title">Cast</string>
 </resources>

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

@@ -74,4 +74,10 @@
         <item name="cornerSizeBottomRight">16dp</item>
         <item name="cornerFamilyBottomRight">rounded</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>

build.gradle

@@ -7,5 +7,5 @@ plugins {
 }
 
 tasks.register('clean', Delete) {
-    delete rootProject.buildDir()
+    delete layout.buildDirectory
 }

gradle/libs.versions.toml

@@ -15,6 +15,7 @@ paletteKtx = "1.0.0"
 preferenceKtx = "1.2.1"
 volley = "1.2.1"
 workRuntimeKtx = "2.11.2"
+playServicesCastFramework = "22.3.0"
 
 [libraries]
 activity-ktx = { group = "androidx.activity", name = "activity-ktx", version.ref = "activityKtx" }
@@ -29,12 +30,14 @@ media3-datasource-okhttp = { group = "androidx.media3", name = "media3-datasourc
 media3-exoplayer = { group = "androidx.media3", name = "media3-exoplayer", version.ref = "media3" }
 media3-exoplayer-hls = { group = "androidx.media3", name = "media3-exoplayer-hls", version.ref = "media3" }
 media3-session = { group = "androidx.media3", name = "media3-session", version.ref = "media3" }
+media3-cast = { group = "androidx.media3", name = "media3-cast", version.ref = "media3" }
 navigation-fragment-ktx = { group = "androidx.navigation", name = "navigation-fragment-ktx", version.ref = "navigation" }
 navigation-ui-ktx = { group = "androidx.navigation", name = "navigation-ui-ktx", version.ref = "navigation" }
 palette-ktx = { group = "androidx.palette", name = "palette-ktx", version.ref = "paletteKtx" }
 preference-ktx = { group = "androidx.preference", name = "preference-ktx", version.ref = "preferenceKtx" }
 volley = { group = "com.android.volley", name = "volley", version.ref = "volley" }
 work-runtime-ktx = { group = "androidx.work", name = "work-runtime-ktx", version.ref = "workRuntimeKtx" }
+play-services-cast-framework = { group = "com.google.android.gms", name = "play-services-cast-framework", version.ref = "playServicesCastFramework" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }