Rollback of https://github.com/androidx/media/commit/26aee812d59a63d040d2a3ac4475e6c538665f0b

*** Original commit ***

Rollback of https://github.com/androidx/media/commit/6109a0eb624dfc8d4153e85f67556b6b3c38b9cc

*** Original commit ***

Intercept audio capabilities change in `DefaultAudioSink`

***

***

PiperOrigin-RevId: 520619600

RELEASENOTES.md

@@ -29,6 +29,11 @@
     *   Extrapolate current position during sleep with offload scheduling.
     *   Add `Renderer.release()` and `AudioSink.release()` for releasing the
         resources at the end of player's lifecycle.
+    *   Listen to audio capabilities changes in `DefaultAudioSink`. Add a
+        required parameter `context` in the constructor of `DefaultAudioSink`,
+        with which the `DefaultAudioSink` will register as the listener to the
+        `AudioCapabilitiesReceiver` and update its `audioCapabilities` property
+        when informed with a capabilities change.
 *   DRM:
     *   Reduce the visibility of several internal-only methods on
         `DefaultDrmSession` that aren't expected to be called from outside the

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/DefaultRenderersFactory.java

@@ -26,7 +26,6 @@ import androidx.annotation.IntDef;
 import androidx.annotation.Nullable;
 import androidx.media3.common.util.Log;
 import androidx.media3.common.util.UnstableApi;
-import androidx.media3.exoplayer.audio.AudioCapabilities;
 import androidx.media3.exoplayer.audio.AudioRendererEventListener;
 import androidx.media3.exoplayer.audio.AudioSink;
 import androidx.media3.exoplayer.audio.DefaultAudioSink;
@@ -649,8 +648,7 @@ public class DefaultRenderersFactory implements RenderersFactory {
       boolean enableFloatOutput,
       boolean enableAudioTrackPlaybackParams,
       boolean enableOffload) {
-    return new DefaultAudioSink.Builder()
-        .setAudioCapabilities(AudioCapabilities.getCapabilities(context))
+    return new DefaultAudioSink.Builder(context)
         .setEnableFloatOutput(enableFloatOutput)
         .setEnableAudioTrackPlaybackParams(enableAudioTrackPlaybackParams)
         .setOffloadMode(

libraries/exoplayer/src/main/java/androidx/media3/exoplayer/audio/DefaultAudioSink.java

@@ -17,13 +17,16 @@ package androidx.media3.exoplayer.audio;
 
 import static androidx.media3.common.audio.AudioProcessor.EMPTY_BUFFER;
 import static androidx.media3.common.util.Assertions.checkNotNull;
+import static androidx.media3.common.util.Assertions.checkState;
 import static androidx.media3.common.util.Util.constrainValue;
 import static androidx.media3.exoplayer.audio.AudioCapabilities.DEFAULT_AUDIO_CAPABILITIES;
+import static androidx.media3.exoplayer.audio.AudioCapabilities.getCapabilities;
 import static java.lang.Math.max;
 import static java.lang.Math.min;
 import static java.lang.annotation.ElementType.TYPE_USE;
 
 import android.annotation.SuppressLint;
+import android.content.Context;
 import android.media.AudioDeviceInfo;
 import android.media.AudioFormat;
 import android.media.AudioManager;
@@ -227,6 +230,7 @@ public final class DefaultAudioSink implements AudioSink {
   /** A builder to create {@link DefaultAudioSink} instances. */
   public static final class Builder {
 
+    @Nullable private final Context context;
     private AudioCapabilities audioCapabilities;
     @Nullable private androidx.media3.common.audio.AudioProcessorChain audioProcessorChain;
     private boolean enableFloatOutput;
@@ -235,19 +239,36 @@ public final class DefaultAudioSink implements AudioSink {
     AudioTrackBufferSizeProvider audioTrackBufferSizeProvider;
     @Nullable AudioOffloadListener audioOffloadListener;
 
-    /** Creates a new builder. */
+    /**
+     * @deprecated Use {@link #Builder(Context)} instead.
+     */
+    @Deprecated
     public Builder() {
+      this.context = null;
       audioCapabilities = DEFAULT_AUDIO_CAPABILITIES;
       offloadMode = OFFLOAD_MODE_DISABLED;
       audioTrackBufferSizeProvider = AudioTrackBufferSizeProvider.DEFAULT;
     }
 
     /**
-     * Sets audio capabilities for playback on this device. May be {@code null} if the default
-     * capabilities (no encoded audio passthrough support) should be assumed.
+     * Creates a new builder.
      *
-     * <p>Default is {@link AudioCapabilities#DEFAULT_AUDIO_CAPABILITIES}.
+     * @param context The {@link Context}.
      */
+    public Builder(Context context) {
+      this.context = context;
+      audioCapabilities = DEFAULT_AUDIO_CAPABILITIES;
+      offloadMode = OFFLOAD_MODE_DISABLED;
+      audioTrackBufferSizeProvider = AudioTrackBufferSizeProvider.DEFAULT;
+    }
+
+    /**
+     * @deprecated These {@linkplain AudioCapabilities audio capabilities} are only used in the
+     *     absence of a {@linkplain Context context}. In the case when the {@code Context} is {@code
+     *     null} and the {@code audioCapabilities} is not set to the {@code Builder}, the default
+     *     capabilities (no encoded audio passthrough support) should be assumed.
+     */
+    @Deprecated
     @CanIgnoreReturnValue
     public Builder setAudioCapabilities(AudioCapabilities audioCapabilities) {
       checkNotNull(audioCapabilities);
@@ -466,6 +487,7 @@ public final class DefaultAudioSink implements AudioSink {
   @GuardedBy("releaseExecutorLock")
   private static int pendingReleaseCount;
 
+  @Nullable private final Context context;
   private final androidx.media3.common.audio.AudioProcessorChain audioProcessorChain;
   private final boolean enableFloatOutput;
   private final ChannelMappingAudioProcessor channelMappingAudioProcessor;
@@ -491,6 +513,7 @@ public final class DefaultAudioSink implements AudioSink {
   private @MonotonicNonNull AudioProcessingPipeline audioProcessingPipeline;
   @Nullable private AudioTrack audioTrack;
   private AudioCapabilities audioCapabilities;
+  private @MonotonicNonNull AudioCapabilitiesReceiver audioCapabilitiesReceiver;
 
   private AudioAttributes audioAttributes;
   @Nullable private MediaPositionParameters afterDrainParameters;
@@ -529,10 +552,12 @@ public final class DefaultAudioSink implements AudioSink {
   private long lastFeedElapsedRealtimeMs;
   private boolean offloadDisabledUntilNextConfiguration;
   private boolean isWaitingForOffloadEndOfStreamHandled;
+  @Nullable private Looper playbackLooper;
 
   @RequiresNonNull("#1.audioProcessorChain")
   private DefaultAudioSink(Builder builder) {
-    audioCapabilities = builder.audioCapabilities;
+    context = builder.context;
+    audioCapabilities = context != null ? getCapabilities(context) : builder.audioCapabilities;
     audioProcessorChain = builder.audioProcessorChain;
     enableFloatOutput = Util.SDK_INT >= 21 && builder.enableFloatOutput;
     preferAudioTrackPlaybackParams = Util.SDK_INT >= 23 && builder.enableAudioTrackPlaybackParams;
@@ -599,7 +624,7 @@ public final class DefaultAudioSink implements AudioSink {
     if (!offloadDisabledUntilNextConfiguration && useOffloadedPlayback(format, audioAttributes)) {
       return SINK_FORMAT_SUPPORTED_DIRECTLY;
     }
-    if (audioCapabilities.isPassthroughPlaybackSupported(format)) {
+    if (getAudioCapabilities().isPassthroughPlaybackSupported(format)) {
       return SINK_FORMAT_SUPPORTED_DIRECTLY;
     }
     return SINK_FORMAT_UNSUPPORTED;
@@ -692,7 +717,7 @@ public final class DefaultAudioSink implements AudioSink {
         outputMode = OUTPUT_MODE_PASSTHROUGH;
         @Nullable
         Pair<Integer, Integer> encodingAndChannelConfig =
-            audioCapabilities.getEncodingAndChannelConfigForPassthrough(inputFormat);
+            getAudioCapabilities().getEncodingAndChannelConfigForPassthrough(inputFormat);
         if (encodingAndChannelConfig == null) {
           throw new ConfigurationException(
               "Unable to configure passthrough for: " + inputFormat, inputFormat);
@@ -1431,6 +1456,22 @@ public final class DefaultAudioSink implements AudioSink {
     offloadDisabledUntilNextConfiguration = false;
   }
 
+  @Override
+  public void release() {
+    if (audioCapabilitiesReceiver != null) {
+      audioCapabilitiesReceiver.unregister();
+    }
+  }
+
+  // AudioCapabilitiesReceiver.Listener implementation.
+
+  public void onAudioCapabilitiesChanged(AudioCapabilities audioCapabilities) {
+    checkState(playbackLooper == Looper.myLooper());
+    if (!audioCapabilities.equals(getAudioCapabilities())) {
+      this.audioCapabilities = audioCapabilities;
+    }
+  }
+
   // Internal methods.
 
   private void resetSinkStateForFlush() {
@@ -1646,6 +1687,18 @@ public final class DefaultAudioSink implements AudioSink {
     }
   }
 
+  private AudioCapabilities getAudioCapabilities() {
+    if (audioCapabilitiesReceiver == null && context != null) {
+      // Must be lazily initialized to receive audio capabilities receiver listener event on the
+      // current (playback) thread as the constructor is not called in the playback thread.
+      playbackLooper = Looper.myLooper();
+      audioCapabilitiesReceiver =
+          new AudioCapabilitiesReceiver(context, this::onAudioCapabilitiesChanged);
+      audioCapabilities = audioCapabilitiesReceiver.register();
+    }
+    return audioCapabilities;
+  }
+
   @RequiresApi(29)
   @SuppressLint("InlinedApi")
   private int getOffloadedPlaybackSupport(