public class

MediaCodecAudioRenderer

extends MediaCodecRenderer

implements MediaClock

 java.lang.Object

androidx.media3.exoplayer.BaseRenderer

androidx.media3.exoplayer.mediacodec.MediaCodecRenderer

↳androidx.media3.exoplayer.audio.MediaCodecAudioRenderer

Gradle dependencies

compile group: 'androidx.media3', name: 'media3-exoplayer', version: '1.0.0-alpha03'

  • groupId: androidx.media3
  • artifactId: media3-exoplayer
  • version: 1.0.0-alpha03

Artifact androidx.media3:media3-exoplayer:1.0.0-alpha03 it located at Google repository (https://maven.google.com/)

Overview

Decodes and renders audio using MediaCodec and an AudioSink.

This renderer accepts the following messages sent via ExoPlayer on the playback thread:

Summary

Fields
from MediaCodecRendererCODEC_OPERATING_RATE_UNSET, decoderCounters
Constructors
publicMediaCodecAudioRenderer(Context context, MediaCodecAdapter.Factory codecAdapterFactory, MediaCodecSelector mediaCodecSelector, boolean enableDecoderFallback, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

Creates a new instance.

publicMediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector)

publicMediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, boolean enableDecoderFallback, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

publicMediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener)

publicMediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener, AudioCapabilities audioCapabilities, AudioProcessor audioProcessors[])

publicMediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

Methods
protected DecoderReuseEvaluationcanReuseCodec(MediaCodecInfo codecInfo, Format oldFormat, Format newFormat)

Evaluates whether the existing MediaCodec can be kept for a new Format, and if it can whether it requires reconfiguration.

public voidexperimentalSetEnableKeepAudioTrackOnSeek(boolean enableKeepAudioTrackOnSeek)

Sets whether to enable the experimental feature that keeps and flushes the when a seek occurs, as opposed to releasing and reinitialising.

protected intgetCodecMaxInputSize(MediaCodecInfo codecInfo, Format format, Format streamFormats[])

Returns a maximum input size suitable for configuring a codec for format in a way that will allow possible adaptation to other compatible formats in streamFormats.

protected floatgetCodecOperatingRateV23(float targetPlaybackSpeed, Format format, Format streamFormats[])

Returns the value for a given playback speed, current Format and set of possible stream formats.

protected abstract java.util.List<MediaCodecInfo>getDecoderInfos(MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder)

Returns a list of decoders that can decode media in the specified format, in priority order.

public MediaClockgetMediaClock()

protected abstract MediaCodecAdapter.ConfigurationgetMediaCodecConfiguration(MediaCodecInfo codecInfo, Format format, MediaCrypto crypto, float codecOperatingRate)

Returns the MediaCodecAdapter.Configuration that will be used to create and configure a MediaCodec to decode the given Format for a playback.

protected MediaFormatgetMediaFormat(Format format, java.lang.String codecMimeType, int codecMaxInputSize, float codecOperatingRate)

Returns the framework that can be used to configure a MediaCodec for decoding the given Format for playback.

public java.lang.StringgetName()

public PlaybackParametersgetPlaybackParameters()

public longgetPositionUs()

public voidhandleMessage(int messageType, java.lang.Object message)

public booleanisEnded()

public booleanisReady()

protected voidonCodecError(java.lang.Exception codecError)

Called when a codec error has occurred.

protected voidonCodecInitialized(java.lang.String name, MediaCodecAdapter.Configuration configuration, long initializedTimestampMs, long initializationDurationMs)

Called when a MediaCodec has been created and configured.

protected voidonCodecReleased(java.lang.String name)

Called when a MediaCodec has been released.

protected voidonDisabled()

Called when the renderer is disabled.

protected voidonEnabled(boolean joining, boolean mayRenderStartOfStream)

Called when the renderer is enabled.

protected DecoderReuseEvaluationonInputFormatChanged(FormatHolder formatHolder)

Called when a new Format is read from the upstream MediaPeriod.

protected voidonOutputFormatChanged(Format format, MediaFormat mediaFormat)

Called when one of the output formats changes.

protected voidonPositionDiscontinuity()

See AudioSink.Listener.onPositionDiscontinuity().

protected voidonPositionReset(long positionUs, boolean joining)

Called when the position is reset.

protected voidonProcessedStreamChange()

Called after the last output buffer before a stream change has been processed.

protected voidonQueueInputBuffer(DecoderInputBuffer buffer)

Called immediately before an input buffer is queued into the codec.

protected voidonReset()

Called when the renderer is reset.

protected voidonStarted()

Called when the renderer is started.

protected voidonStopped()

Called when the renderer is stopped.

protected abstract booleanprocessOutputBuffer(long positionUs, long elapsedRealtimeUs, MediaCodecAdapter codec, java.nio.ByteBuffer buffer, int bufferIndex, int bufferFlags, int sampleCount, long bufferPresentationTimeUs, boolean isDecodeOnlyBuffer, boolean isLastBuffer, Format format)

Processes an output media buffer.

protected voidrenderToEndOfStream()

Incrementally renders any remaining output.

public voidsetPlaybackParameters(PlaybackParameters playbackParameters)

protected booleanshouldUseBypass(Format format)

Returns whether buffers in the input format can be processed without a codec.

protected abstract intsupportsFormat(MediaCodecSelector mediaCodecSelector, Format format)

Returns the for the given Format.

from MediaCodecRenderercreateDecoderException, flushOrReinitializeCodec, flushOrReleaseCodec, getCodec, getCodecInfo, getCodecNeedsEosPropagation, getCodecOperatingRate, getCodecOutputMediaFormat, getOutputStreamOffsetUs, getPlaybackSpeed, handleInputBufferSupplementalData, maybeInitCodecOrBypass, onProcessedOutputBuffer, onStreamChanged, releaseCodec, render, resetCodecStateForFlush, resetCodecStateForRelease, setPendingOutputEndOfStream, setPendingPlaybackException, setPlaybackSpeed, setRenderTimeLimitMs, shouldInitCodec, shouldReinitCodec, supportsFormat, supportsFormatDrm, supportsMixedMimeTypeAdaptation, updateCodecOperatingRate, updateOutputFormatForTime
from BaseRenderercreateRendererException, createRendererException, disable, enable, getCapabilities, getConfiguration, getFormatHolder, getIndex, getLastResetPositionUs, getPlayerId, getReadingPositionUs, getState, getStream, getStreamFormats, getTrackType, hasReadStreamToEnd, init, isCurrentStreamFinal, isSourceReady, maybeThrowStreamError, readSource, replaceStream, reset, resetPosition, setCurrentStreamFinal, skipSource, start, stop
from java.lang.Objectclone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructors

public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector)

Parameters:

context: A context.
mediaCodecSelector: A decoder selector.

public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener)

Parameters:

context: A context.
mediaCodecSelector: A decoder selector.
eventHandler: A handler to use when delivering events to eventListener. May be null if delivery of events is not required.
eventListener: A listener of events. May be null if delivery of events is not required.

public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener, AudioCapabilities audioCapabilities, AudioProcessor audioProcessors[])

Parameters:

context: A context.
mediaCodecSelector: A decoder selector.
eventHandler: A handler to use when delivering events to eventListener. May be null if delivery of events is not required.
eventListener: A listener of events. May be null if delivery of events is not required.
audioCapabilities: The audio capabilities for playback on this device. Use AudioCapabilities.DEFAULT_AUDIO_CAPABILITIES if default capabilities (no encoded audio passthrough support) should be assumed.
audioProcessors: Optional AudioProcessors that will process PCM audio before output.

public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

Parameters:

context: A context.
mediaCodecSelector: A decoder selector.
eventHandler: A handler to use when delivering events to eventListener. May be null if delivery of events is not required.
eventListener: A listener of events. May be null if delivery of events is not required.
audioSink: The sink to which audio will be output.

public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector, boolean enableDecoderFallback, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

Parameters:

context: A context.
mediaCodecSelector: A decoder selector.
enableDecoderFallback: Whether to enable fallback to lower-priority decoders if decoder initialization fails. This may result in using a decoder that is slower/less efficient than the primary decoder.
eventHandler: A handler to use when delivering events to eventListener. May be null if delivery of events is not required.
eventListener: A listener of events. May be null if delivery of events is not required.
audioSink: The sink to which audio will be output.

public MediaCodecAudioRenderer(Context context, MediaCodecAdapter.Factory codecAdapterFactory, MediaCodecSelector mediaCodecSelector, boolean enableDecoderFallback, Handler eventHandler, AudioRendererEventListener eventListener, AudioSink audioSink)

Creates a new instance.

Parameters:

context: A context.
codecAdapterFactory: The used to create MediaCodecAdapter instances.
mediaCodecSelector: A decoder selector.
enableDecoderFallback: Whether to enable fallback to lower-priority decoders if decoder initialization fails. This may result in using a decoder that is slower/less efficient than the primary decoder.
eventHandler: A handler to use when delivering events to eventListener. May be null if delivery of events is not required.
eventListener: A listener of events. May be null if delivery of events is not required.
audioSink: The sink to which audio will be output.

Methods

public java.lang.String getName()

public void experimentalSetEnableKeepAudioTrackOnSeek(boolean enableKeepAudioTrackOnSeek)

Sets whether to enable the experimental feature that keeps and flushes the when a seek occurs, as opposed to releasing and reinitialising. Off by default.

This method is experimental, and will be renamed or removed in a future release.

Parameters:

enableKeepAudioTrackOnSeek: Whether to keep the on seek.

protected abstract int supportsFormat(MediaCodecSelector mediaCodecSelector, Format format)

Returns the for the given Format.

Parameters:

mediaCodecSelector: The decoder selector.
format: The Format.

Returns:

The for this Format.

protected abstract java.util.List<MediaCodecInfo> getDecoderInfos(MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder)

Returns a list of decoders that can decode media in the specified format, in priority order.

Parameters:

mediaCodecSelector: The decoder selector.
format: The Format for which a decoder is required.
requiresSecureDecoder: Whether a secure decoder is required.

Returns:

A list of MediaCodecInfos corresponding to decoders. May be empty.

protected boolean shouldUseBypass(Format format)

Returns whether buffers in the input format can be processed without a codec.

This method is only called if the content is not DRM protected, because if the content is DRM protected use of bypass is never possible.

Parameters:

format: The input Format.

Returns:

Whether playback bypassing MediaCodec is supported.

protected abstract MediaCodecAdapter.Configuration getMediaCodecConfiguration(MediaCodecInfo codecInfo, Format format, MediaCrypto crypto, float codecOperatingRate)

Returns the MediaCodecAdapter.Configuration that will be used to create and configure a MediaCodec to decode the given Format for a playback.

Parameters:

codecInfo: Information about the MediaCodec being configured.
format: The Format for which the codec is being configured.
crypto: For drm protected playbacks, a to use for decryption.
codecOperatingRate: The codec operating rate, or MediaCodecRenderer.CODEC_OPERATING_RATE_UNSET if no codec operating rate should be set.

Returns:

The parameters needed to call MediaCodec.

protected DecoderReuseEvaluation canReuseCodec(MediaCodecInfo codecInfo, Format oldFormat, Format newFormat)

Evaluates whether the existing MediaCodec can be kept for a new Format, and if it can whether it requires reconfiguration.

The default implementation does not allow decoder reuse.

Parameters:

codecInfo: A MediaCodecInfo describing the decoder.
oldFormat: The Format for which the existing instance is configured.
newFormat: The new Format.

Returns:

The result of the evaluation.

public MediaClock getMediaClock()

protected float getCodecOperatingRateV23(float targetPlaybackSpeed, Format format, Format streamFormats[])

Returns the value for a given playback speed, current Format and set of possible stream formats.

The default implementation returns MediaCodecRenderer.CODEC_OPERATING_RATE_UNSET.

Parameters:

targetPlaybackSpeed: The target factor by which playback should be sped up. This may be different from the current playback speed, for example, if the speed is temporarily adjusted for live playback.
format: The Format for which the codec is being configured.
streamFormats: The possible stream formats.

Returns:

The codec operating rate, or MediaCodecRenderer.CODEC_OPERATING_RATE_UNSET if no codec operating rate should be set.

protected void onCodecInitialized(java.lang.String name, MediaCodecAdapter.Configuration configuration, long initializedTimestampMs, long initializationDurationMs)

Called when a MediaCodec has been created and configured.

The default implementation is a no-op.

Parameters:

name: The name of the codec that was initialized.
configuration: The MediaCodecAdapter.Configuration used to configure the codec.
initializedTimestampMs: when initialization finished.
initializationDurationMs: The time taken to initialize the codec in milliseconds.

protected void onCodecReleased(java.lang.String name)

Called when a MediaCodec has been released.

The default implementation is a no-op.

Parameters:

name: The name of the codec that was released.

protected void onCodecError(java.lang.Exception codecError)

Called when a codec error has occurred.

The default implementation is a no-op.

Parameters:

codecError: The error.

protected DecoderReuseEvaluation onInputFormatChanged(FormatHolder formatHolder)

Called when a new Format is read from the upstream MediaPeriod.

Parameters:

formatHolder: A FormatHolder that holds the new Format.

Returns:

The result of the evaluation to determine whether the existing decoder instance can be reused for the new format, or null if the renderer did not have a decoder.

protected void onOutputFormatChanged(Format format, MediaFormat mediaFormat)

Called when one of the output formats changes.

The default implementation is a no-op.

Parameters:

format: The input Format to which future output now corresponds. If the renderer is in bypass mode, this is also the output format.
mediaFormat: The codec output , or null if the renderer is in bypass mode.

protected void onPositionDiscontinuity()

See AudioSink.Listener.onPositionDiscontinuity().

protected void onEnabled(boolean joining, boolean mayRenderStartOfStream)

Called when the renderer is enabled.

The default implementation is a no-op.

Parameters:

joining: Whether this renderer is being enabled to join an ongoing playback.
mayRenderStartOfStream: Whether this renderer is allowed to render the start of the stream even if the state is not Renderer.STATE_STARTED yet.

protected void onPositionReset(long positionUs, boolean joining)

Called when the position is reset. This occurs when the renderer is enabled after BaseRenderer.onStreamChanged(Format[], long, long) has been called, and also when a position discontinuity is encountered.

After a position reset, the renderer's SampleStream is guaranteed to provide samples starting from a key frame.

The default implementation is a no-op.

Parameters:

positionUs: The new playback position in microseconds.
joining: Whether this renderer is being enabled to join an ongoing playback.

protected void onStarted()

Called when the renderer is started.

The default implementation is a no-op.

protected void onStopped()

Called when the renderer is stopped.

The default implementation is a no-op.

protected void onDisabled()

Called when the renderer is disabled.

The default implementation is a no-op.

protected void onReset()

Called when the renderer is reset.

The default implementation is a no-op.

public boolean isEnded()

public boolean isReady()

public long getPositionUs()

public void setPlaybackParameters(PlaybackParameters playbackParameters)

public PlaybackParameters getPlaybackParameters()

protected void onQueueInputBuffer(DecoderInputBuffer buffer)

Called immediately before an input buffer is queued into the codec.

The default implementation is a no-op.

Parameters:

buffer: The buffer to be queued.

protected void onProcessedStreamChange()

Called after the last output buffer before a stream change has been processed.

protected abstract boolean processOutputBuffer(long positionUs, long elapsedRealtimeUs, MediaCodecAdapter codec, java.nio.ByteBuffer buffer, int bufferIndex, int bufferFlags, int sampleCount, long bufferPresentationTimeUs, boolean isDecodeOnlyBuffer, boolean isLastBuffer, Format format)

Processes an output media buffer.

When a new java.nio.ByteBuffer is passed to this method its position and limit delineate the data to be processed. The return value indicates whether the buffer was processed in full. If true is returned then the next call to this method will receive a new buffer to be processed. If false is returned then the same buffer will be passed to the next call. An implementation of this method is free to modify the buffer and can assume that the buffer will not be externally modified between successive calls. Hence an implementation can, for example, modify the buffer's position to keep track of how much of the data it has processed.

Note that the first call to this method following a call to MediaCodecRenderer.onPositionReset(long, boolean) will always receive a new java.nio.ByteBuffer to be processed.

Parameters:

positionUs: The current media time in microseconds, measured at the start of the current iteration of the rendering loop.
elapsedRealtimeUs: in microseconds, measured at the start of the current iteration of the rendering loop.
codec: The MediaCodecAdapter instance, or null in bypass mode were no codec is used.
buffer: The output buffer to process, or null if the buffer data is not made available to the application layer (see MediaCodec). This buffer can only be null for video data. Note that the buffer data can still be rendered in this case by using the bufferIndex.
bufferIndex: The index of the output buffer.
bufferFlags: The flags attached to the output buffer.
sampleCount: The number of samples extracted from the sample queue in the buffer. This allows handling multiple samples as a batch for efficiency.
bufferPresentationTimeUs: The presentation time of the output buffer in microseconds.
isDecodeOnlyBuffer: Whether the buffer was marked with C.BUFFER_FLAG_DECODE_ONLY by the source.
isLastBuffer: Whether the buffer is known to contain the last sample of the current stream. This flag is set on a best effort basis, and any logic relying on it should degrade gracefully to handle cases where it's not set.
format: The Format associated with the buffer.

Returns:

Whether the output buffer was fully processed (for example, rendered or skipped).

protected void renderToEndOfStream()

Incrementally renders any remaining output.

The default implementation is a no-op.

public void handleMessage(int messageType, java.lang.Object message)

protected int getCodecMaxInputSize(MediaCodecInfo codecInfo, Format format, Format streamFormats[])

Returns a maximum input size suitable for configuring a codec for format in a way that will allow possible adaptation to other compatible formats in streamFormats.

Parameters:

codecInfo: A MediaCodecInfo describing the decoder.
format: The Format for which the codec is being configured.
streamFormats: The possible stream formats.

Returns:

A suitable maximum input size.

protected MediaFormat getMediaFormat(Format format, java.lang.String codecMimeType, int codecMaxInputSize, float codecOperatingRate)

Returns the framework that can be used to configure a MediaCodec for decoding the given Format for playback.

Parameters:

format: The Format of the media.
codecMimeType: The MIME type handled by the codec.
codecMaxInputSize: The maximum input size supported by the codec.
codecOperatingRate: The codec operating rate, or MediaCodecRenderer.CODEC_OPERATING_RATE_UNSET if no codec operating rate should be set.

Returns:

The framework .

Source

/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package androidx.media3.exoplayer.audio;

import static androidx.media3.common.util.Assertions.checkNotNull;
import static androidx.media3.exoplayer.DecoderReuseEvaluation.DISCARD_REASON_MAX_INPUT_SIZE_EXCEEDED;
import static androidx.media3.exoplayer.DecoderReuseEvaluation.REUSE_RESULT_NO;
import static com.google.common.base.MoreObjects.firstNonNull;
import static java.lang.Math.max;

import android.annotation.SuppressLint;
import android.content.Context;
import android.media.AudioFormat;
import android.media.MediaCodec;
import android.media.MediaCrypto;
import android.media.MediaFormat;
import android.os.Handler;
import androidx.annotation.CallSuper;
import androidx.annotation.Nullable;
import androidx.media3.common.AudioAttributes;
import androidx.media3.common.AuxEffectInfo;
import androidx.media3.common.C;
import androidx.media3.common.Format;
import androidx.media3.common.MimeTypes;
import androidx.media3.common.PlaybackException;
import androidx.media3.common.PlaybackParameters;
import androidx.media3.common.util.Log;
import androidx.media3.common.util.MediaFormatUtil;
import androidx.media3.common.util.UnstableApi;
import androidx.media3.common.util.Util;
import androidx.media3.decoder.DecoderInputBuffer;
import androidx.media3.exoplayer.DecoderReuseEvaluation;
import androidx.media3.exoplayer.DecoderReuseEvaluation.DecoderDiscardReasons;
import androidx.media3.exoplayer.ExoPlaybackException;
import androidx.media3.exoplayer.ExoPlayer;
import androidx.media3.exoplayer.FormatHolder;
import androidx.media3.exoplayer.MediaClock;
import androidx.media3.exoplayer.PlayerMessage.Target;
import androidx.media3.exoplayer.RendererCapabilities;
import androidx.media3.exoplayer.audio.AudioRendererEventListener.EventDispatcher;
import androidx.media3.exoplayer.audio.AudioSink.InitializationException;
import androidx.media3.exoplayer.audio.AudioSink.WriteException;
import androidx.media3.exoplayer.mediacodec.MediaCodecAdapter;
import androidx.media3.exoplayer.mediacodec.MediaCodecInfo;
import androidx.media3.exoplayer.mediacodec.MediaCodecRenderer;
import androidx.media3.exoplayer.mediacodec.MediaCodecSelector;
import androidx.media3.exoplayer.mediacodec.MediaCodecUtil;
import androidx.media3.exoplayer.mediacodec.MediaCodecUtil.DecoderQueryException;
import com.google.common.collect.ImmutableList;
import java.nio.ByteBuffer;
import java.util.List;

/**
 * Decodes and renders audio using {@link MediaCodec} and an {@link AudioSink}.
 *
 * <p>This renderer accepts the following messages sent via {@link ExoPlayer#createMessage(Target)}
 * on the playback thread:
 *
 * <ul>
 *   <li>Message with type {@link #MSG_SET_VOLUME} to set the volume. The message payload should be
 *       a {@link Float} with 0 being silence and 1 being unity gain.
 *   <li>Message with type {@link #MSG_SET_AUDIO_ATTRIBUTES} to set the audio attributes. The
 *       message payload should be an {@link AudioAttributes} instance that will configure the
 *       underlying audio track.
 *   <li>Message with type {@link #MSG_SET_AUX_EFFECT_INFO} to set the auxiliary effect. The message
 *       payload should be an {@link AuxEffectInfo} instance that will configure the underlying
 *       audio track.
 *   <li>Message with type {@link #MSG_SET_SKIP_SILENCE_ENABLED} to enable or disable skipping
 *       silences. The message payload should be a {@link Boolean}.
 *   <li>Message with type {@link #MSG_SET_AUDIO_SESSION_ID} to set the audio session ID. The
 *       message payload should be a session ID {@link Integer} that will be attached to the
 *       underlying audio track.
 * </ul>
 */
@UnstableApi
public class MediaCodecAudioRenderer extends MediaCodecRenderer implements MediaClock {

  private static final String TAG = "MediaCodecAudioRenderer";
  /**
   * Custom key used to indicate bits per sample by some decoders on Vivo devices. For example
   * OMX.vivo.alac.decoder on the Vivo Z1 Pro.
   */
  private static final String VIVO_BITS_PER_SAMPLE_KEY = "v-bits-per-sample";

  private final Context context;
  private final EventDispatcher eventDispatcher;
  private final AudioSink audioSink;

  private int codecMaxInputSize;
  private boolean codecNeedsDiscardChannelsWorkaround;
  /** Codec used for DRM decryption only in passthrough and offload. */
  @Nullable private Format decryptOnlyCodecFormat;

  private long currentPositionUs;
  private boolean allowFirstBufferPositionDiscontinuity;
  private boolean allowPositionDiscontinuity;
  private boolean audioSinkNeedsReset;

  private boolean experimentalKeepAudioTrackOnSeek;

  @Nullable private WakeupListener wakeupListener;

  /**
   * @param context A context.
   * @param mediaCodecSelector A decoder selector.
   */
  public MediaCodecAudioRenderer(Context context, MediaCodecSelector mediaCodecSelector) {
    this(context, mediaCodecSelector, /* eventHandler= */ null, /* eventListener= */ null);
  }

  /**
   * @param context A context.
   * @param mediaCodecSelector A decoder selector.
   * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
   *     null if delivery of events is not required.
   * @param eventListener A listener of events. May be null if delivery of events is not required.
   */
  public MediaCodecAudioRenderer(
      Context context,
      MediaCodecSelector mediaCodecSelector,
      @Nullable Handler eventHandler,
      @Nullable AudioRendererEventListener eventListener) {
    this(
        context,
        mediaCodecSelector,
        eventHandler,
        eventListener,
        AudioCapabilities.DEFAULT_AUDIO_CAPABILITIES);
  }

  /**
   * @param context A context.
   * @param mediaCodecSelector A decoder selector.
   * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
   *     null if delivery of events is not required.
   * @param eventListener A listener of events. May be null if delivery of events is not required.
   * @param audioCapabilities The audio capabilities for playback on this device. Use {@link
   *     AudioCapabilities#DEFAULT_AUDIO_CAPABILITIES} if default capabilities (no encoded audio
   *     passthrough support) should be assumed.
   * @param audioProcessors Optional {@link AudioProcessor}s that will process PCM audio before
   *     output.
   */
  public MediaCodecAudioRenderer(
      Context context,
      MediaCodecSelector mediaCodecSelector,
      @Nullable Handler eventHandler,
      @Nullable AudioRendererEventListener eventListener,
      AudioCapabilities audioCapabilities,
      AudioProcessor... audioProcessors) {
    this(
        context,
        mediaCodecSelector,
        eventHandler,
        eventListener,
        new DefaultAudioSink.Builder()
            .setAudioCapabilities( // For backward compatibility, null == default.
                firstNonNull(audioCapabilities, AudioCapabilities.DEFAULT_AUDIO_CAPABILITIES))
            .setAudioProcessors(audioProcessors)
            .build());
  }

  /**
   * @param context A context.
   * @param mediaCodecSelector A decoder selector.
   * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
   *     null if delivery of events is not required.
   * @param eventListener A listener of events. May be null if delivery of events is not required.
   * @param audioSink The sink to which audio will be output.
   */
  public MediaCodecAudioRenderer(
      Context context,
      MediaCodecSelector mediaCodecSelector,
      @Nullable Handler eventHandler,
      @Nullable AudioRendererEventListener eventListener,
      AudioSink audioSink) {
    this(
        context,
        MediaCodecAdapter.Factory.DEFAULT,
        mediaCodecSelector,
        /* enableDecoderFallback= */ false,
        eventHandler,
        eventListener,
        audioSink);
  }

  /**
   * @param context A context.
   * @param mediaCodecSelector A decoder selector.
   * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder
   *     initialization fails. This may result in using a decoder that is slower/less efficient than
   *     the primary decoder.
   * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
   *     null if delivery of events is not required.
   * @param eventListener A listener of events. May be null if delivery of events is not required.
   * @param audioSink The sink to which audio will be output.
   */
  public MediaCodecAudioRenderer(
      Context context,
      MediaCodecSelector mediaCodecSelector,
      boolean enableDecoderFallback,
      @Nullable Handler eventHandler,
      @Nullable AudioRendererEventListener eventListener,
      AudioSink audioSink) {
    this(
        context,
        MediaCodecAdapter.Factory.DEFAULT,
        mediaCodecSelector,
        enableDecoderFallback,
        eventHandler,
        eventListener,
        audioSink);
  }

  /**
   * Creates a new instance.
   *
   * @param context A context.
   * @param codecAdapterFactory The {@link MediaCodecAdapter.Factory} used to create {@link
   *     MediaCodecAdapter} instances.
   * @param mediaCodecSelector A decoder selector.
   * @param enableDecoderFallback Whether to enable fallback to lower-priority decoders if decoder
   *     initialization fails. This may result in using a decoder that is slower/less efficient than
   *     the primary decoder.
   * @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
   *     null if delivery of events is not required.
   * @param eventListener A listener of events. May be null if delivery of events is not required.
   * @param audioSink The sink to which audio will be output.
   */
  public MediaCodecAudioRenderer(
      Context context,
      MediaCodecAdapter.Factory codecAdapterFactory,
      MediaCodecSelector mediaCodecSelector,
      boolean enableDecoderFallback,
      @Nullable Handler eventHandler,
      @Nullable AudioRendererEventListener eventListener,
      AudioSink audioSink) {
    super(
        C.TRACK_TYPE_AUDIO,
        codecAdapterFactory,
        mediaCodecSelector,
        enableDecoderFallback,
        /* assumedMinimumCodecOperatingRate= */ 44100);
    context = context.getApplicationContext();
    this.context = context;
    this.audioSink = audioSink;
    eventDispatcher = new EventDispatcher(eventHandler, eventListener);
    audioSink.setListener(new AudioSinkListener());
  }

  @Override
  public String getName() {
    return TAG;
  }

  /**
   * Sets whether to enable the experimental feature that keeps and flushes the {@link
   * android.media.AudioTrack} when a seek occurs, as opposed to releasing and reinitialising. Off
   * by default.
   *
   * <p>This method is experimental, and will be renamed or removed in a future release.
   *
   * @param enableKeepAudioTrackOnSeek Whether to keep the {@link android.media.AudioTrack} on seek.
   */
  public void experimentalSetEnableKeepAudioTrackOnSeek(boolean enableKeepAudioTrackOnSeek) {
    this.experimentalKeepAudioTrackOnSeek = enableKeepAudioTrackOnSeek;
  }

  @Override
  protected @Capabilities int supportsFormat(MediaCodecSelector mediaCodecSelector, Format format)
      throws DecoderQueryException {
    if (!MimeTypes.isAudio(format.sampleMimeType)) {
      return RendererCapabilities.create(C.FORMAT_UNSUPPORTED_TYPE);
    }
    @TunnelingSupport
    int tunnelingSupport = Util.SDK_INT >= 21 ? TUNNELING_SUPPORTED : TUNNELING_NOT_SUPPORTED;
    boolean formatHasDrm = format.cryptoType != C.CRYPTO_TYPE_NONE;
    boolean supportsFormatDrm = supportsFormatDrm(format);
    // In direct mode, if the format has DRM then we need to use a decoder that only decrypts.
    // Else we don't don't need a decoder at all.
    if (supportsFormatDrm
        && audioSink.supportsFormat(format)
        && (!formatHasDrm || MediaCodecUtil.getDecryptOnlyDecoderInfo() != null)) {
      return RendererCapabilities.create(C.FORMAT_HANDLED, ADAPTIVE_NOT_SEAMLESS, tunnelingSupport);
    }
    // If the input is PCM then it will be passed directly to the sink. Hence the sink must support
    // the input format directly.
    if (MimeTypes.AUDIO_RAW.equals(format.sampleMimeType) && !audioSink.supportsFormat(format)) {
      return RendererCapabilities.create(C.FORMAT_UNSUPPORTED_SUBTYPE);
    }
    // For all other input formats, we expect the decoder to output 16-bit PCM.
    if (!audioSink.supportsFormat(
        Util.getPcmFormat(C.ENCODING_PCM_16BIT, format.channelCount, format.sampleRate))) {
      return RendererCapabilities.create(C.FORMAT_UNSUPPORTED_SUBTYPE);
    }
    List<MediaCodecInfo> decoderInfos =
        getDecoderInfos(mediaCodecSelector, format, /* requiresSecureDecoder= */ false, audioSink);
    if (decoderInfos.isEmpty()) {
      return RendererCapabilities.create(C.FORMAT_UNSUPPORTED_SUBTYPE);
    }
    if (!supportsFormatDrm) {
      return RendererCapabilities.create(C.FORMAT_UNSUPPORTED_DRM);
    }
    // Check whether the first decoder supports the format. This is the preferred decoder for the
    // format's MIME type, according to the MediaCodecSelector.
    MediaCodecInfo decoderInfo = decoderInfos.get(0);
    boolean isFormatSupported = decoderInfo.isFormatSupported(format);
    boolean isPreferredDecoder = true;
    if (!isFormatSupported) {
      // Check whether any of the other decoders support the format.
      for (int i = 1; i < decoderInfos.size(); i++) {
        MediaCodecInfo otherDecoderInfo = decoderInfos.get(i);
        if (otherDecoderInfo.isFormatSupported(format)) {
          decoderInfo = otherDecoderInfo;
          isFormatSupported = true;
          isPreferredDecoder = false;
          break;
        }
      }
    }
    @C.FormatSupport
    int formatSupport = isFormatSupported ? C.FORMAT_HANDLED : C.FORMAT_EXCEEDS_CAPABILITIES;
    @AdaptiveSupport
    int adaptiveSupport =
        isFormatSupported && decoderInfo.isSeamlessAdaptationSupported(format)
            ? ADAPTIVE_SEAMLESS
            : ADAPTIVE_NOT_SEAMLESS;
    @HardwareAccelerationSupport
    int hardwareAccelerationSupport =
        decoderInfo.hardwareAccelerated
            ? HARDWARE_ACCELERATION_SUPPORTED
            : HARDWARE_ACCELERATION_NOT_SUPPORTED;
    @DecoderSupport
    int decoderSupport = isPreferredDecoder ? DECODER_SUPPORT_PRIMARY : DECODER_SUPPORT_FALLBACK;
    return RendererCapabilities.create(
        formatSupport,
        adaptiveSupport,
        tunnelingSupport,
        hardwareAccelerationSupport,
        decoderSupport);
  }

  @Override
  protected List<MediaCodecInfo> getDecoderInfos(
      MediaCodecSelector mediaCodecSelector, Format format, boolean requiresSecureDecoder)
      throws DecoderQueryException {
    return MediaCodecUtil.getDecoderInfosSortedByFormatSupport(
        getDecoderInfos(mediaCodecSelector, format, requiresSecureDecoder, audioSink), format);
  }

  /**
   * Returns a list of decoders that can decode media in the specified format, in the priority order
   * specified by the {@link MediaCodecSelector}. Note that since the {@link MediaCodecSelector}
   * only has access to {@link Format#sampleMimeType}, the list is not ordered to account for
   * whether each decoder supports the details of the format (e.g., taking into account the format's
   * profile, level, channel count and so on). {@link
   * MediaCodecUtil#getDecoderInfosSortedByFormatSupport} can be used to further sort the list into
   * an order where decoders that fully support the format come first.
   *
   * @param mediaCodecSelector The decoder selector.
   * @param format The {@link Format} for which a decoder is required.
   * @param requiresSecureDecoder Whether a secure decoder is required.
   * @param audioSink The {@link AudioSink} to which audio will be output.
   * @return A list of {@link MediaCodecInfo}s corresponding to decoders. May be empty.
   * @throws DecoderQueryException Thrown if there was an error querying decoders.
   */
  private static List<MediaCodecInfo> getDecoderInfos(
      MediaCodecSelector mediaCodecSelector,
      Format format,
      boolean requiresSecureDecoder,
      AudioSink audioSink)
      throws DecoderQueryException {
    @Nullable String mimeType = format.sampleMimeType;
    if (mimeType == null) {
      return ImmutableList.of();
    }
    if (audioSink.supportsFormat(format)) {
      // The format is supported directly, so a codec is only needed for decryption.
      @Nullable MediaCodecInfo codecInfo = MediaCodecUtil.getDecryptOnlyDecoderInfo();
      if (codecInfo != null) {
        return ImmutableList.of(codecInfo);
      }
    }
    List<MediaCodecInfo> decoderInfos =
        mediaCodecSelector.getDecoderInfos(
            mimeType, requiresSecureDecoder, /* requiresTunnelingDecoder= */ false);
    @Nullable String alternativeMimeType = MediaCodecUtil.getAlternativeCodecMimeType(format);
    if (alternativeMimeType == null) {
      return ImmutableList.copyOf(decoderInfos);
    }
    List<MediaCodecInfo> alternativeDecoderInfos =
        mediaCodecSelector.getDecoderInfos(
            alternativeMimeType, requiresSecureDecoder, /* requiresTunnelingDecoder= */ false);
    return ImmutableList.<MediaCodecInfo>builder()
        .addAll(decoderInfos)
        .addAll(alternativeDecoderInfos)
        .build();
  }

  @Override
  protected boolean shouldUseBypass(Format format) {
    return audioSink.supportsFormat(format);
  }

  @Override
  protected MediaCodecAdapter.Configuration getMediaCodecConfiguration(
      MediaCodecInfo codecInfo,
      Format format,
      @Nullable MediaCrypto crypto,
      float codecOperatingRate) {
    codecMaxInputSize = getCodecMaxInputSize(codecInfo, format, getStreamFormats());
    codecNeedsDiscardChannelsWorkaround = codecNeedsDiscardChannelsWorkaround(codecInfo.name);
    MediaFormat mediaFormat =
        getMediaFormat(format, codecInfo.codecMimeType, codecMaxInputSize, codecOperatingRate);
    // Store the input MIME type if we're only using the codec for decryption.
    boolean decryptOnlyCodecEnabled =
        MimeTypes.AUDIO_RAW.equals(codecInfo.mimeType)
            && !MimeTypes.AUDIO_RAW.equals(format.sampleMimeType);
    decryptOnlyCodecFormat = decryptOnlyCodecEnabled ? format : null;
    return MediaCodecAdapter.Configuration.createForAudioDecoding(
        codecInfo, mediaFormat, format, crypto);
  }

  @Override
  protected DecoderReuseEvaluation canReuseCodec(
      MediaCodecInfo codecInfo, Format oldFormat, Format newFormat) {
    DecoderReuseEvaluation evaluation = codecInfo.canReuseCodec(oldFormat, newFormat);

    @DecoderDiscardReasons int discardReasons = evaluation.discardReasons;
    if (getCodecMaxInputSize(codecInfo, newFormat) > codecMaxInputSize) {
      discardReasons |= DISCARD_REASON_MAX_INPUT_SIZE_EXCEEDED;
    }

    return new DecoderReuseEvaluation(
        codecInfo.name,
        oldFormat,
        newFormat,
        discardReasons != 0 ? REUSE_RESULT_NO : evaluation.result,
        discardReasons);
  }

  @Override
  @Nullable
  public MediaClock getMediaClock() {
    return this;
  }

  @Override
  protected float getCodecOperatingRateV23(
      float targetPlaybackSpeed, Format format, Format[] streamFormats) {
    // Use the highest known stream sample-rate up front, to avoid having to reconfigure the codec
    // should an adaptive switch to that stream occur.
    int maxSampleRate = -1;
    for (Format streamFormat : streamFormats) {
      int streamSampleRate = streamFormat.sampleRate;
      if (streamSampleRate != Format.NO_VALUE) {
        maxSampleRate = max(maxSampleRate, streamSampleRate);
      }
    }
    return maxSampleRate == -1 ? CODEC_OPERATING_RATE_UNSET : (maxSampleRate * targetPlaybackSpeed);
  }

  @Override
  protected void onCodecInitialized(
      String name,
      MediaCodecAdapter.Configuration configuration,
      long initializedTimestampMs,
      long initializationDurationMs) {
    eventDispatcher.decoderInitialized(name, initializedTimestampMs, initializationDurationMs);
  }

  @Override
  protected void onCodecReleased(String name) {
    eventDispatcher.decoderReleased(name);
  }

  @Override
  protected void onCodecError(Exception codecError) {
    Log.e(TAG, "Audio codec error", codecError);
    eventDispatcher.audioCodecError(codecError);
  }

  @Override
  @Nullable
  protected DecoderReuseEvaluation onInputFormatChanged(FormatHolder formatHolder)
      throws ExoPlaybackException {
    @Nullable DecoderReuseEvaluation evaluation = super.onInputFormatChanged(formatHolder);
    eventDispatcher.inputFormatChanged(formatHolder.format, evaluation);
    return evaluation;
  }

  @Override
  protected void onOutputFormatChanged(Format format, @Nullable MediaFormat mediaFormat)
      throws ExoPlaybackException {
    Format audioSinkInputFormat;
    @Nullable int[] channelMap = null;
    if (decryptOnlyCodecFormat != null) { // Direct playback with a codec for decryption.
      audioSinkInputFormat = decryptOnlyCodecFormat;
    } else if (getCodec() == null) { // Direct playback with codec bypass.
      audioSinkInputFormat = format;
    } else {
      @C.PcmEncoding int pcmEncoding;
      if (MimeTypes.AUDIO_RAW.equals(format.sampleMimeType)) {
        // For PCM streams, the encoder passes through int samples despite set to float mode.
        pcmEncoding = format.pcmEncoding;
      } else if (Util.SDK_INT >= 24 && mediaFormat.containsKey(MediaFormat.KEY_PCM_ENCODING)) {
        pcmEncoding = mediaFormat.getInteger(MediaFormat.KEY_PCM_ENCODING);
      } else if (mediaFormat.containsKey(VIVO_BITS_PER_SAMPLE_KEY)) {
        pcmEncoding = Util.getPcmEncoding(mediaFormat.getInteger(VIVO_BITS_PER_SAMPLE_KEY));
      } else {
        // If the format is anything other than PCM then we assume that the audio decoder will
        // output 16-bit PCM.
        pcmEncoding = C.ENCODING_PCM_16BIT;
      }
      audioSinkInputFormat =
          new Format.Builder()
              .setSampleMimeType(MimeTypes.AUDIO_RAW)
              .setPcmEncoding(pcmEncoding)
              .setEncoderDelay(format.encoderDelay)
              .setEncoderPadding(format.encoderPadding)
              .setChannelCount(mediaFormat.getInteger(MediaFormat.KEY_CHANNEL_COUNT))
              .setSampleRate(mediaFormat.getInteger(MediaFormat.KEY_SAMPLE_RATE))
              .build();
      if (codecNeedsDiscardChannelsWorkaround
          && audioSinkInputFormat.channelCount == 6
          && format.channelCount < 6) {
        channelMap = new int[format.channelCount];
        for (int i = 0; i < format.channelCount; i++) {
          channelMap[i] = i;
        }
      }
    }
    try {
      audioSink.configure(audioSinkInputFormat, /* specifiedBufferSize= */ 0, channelMap);
    } catch (AudioSink.ConfigurationException e) {
      throw createRendererException(
          e, e.format, PlaybackException.ERROR_CODE_AUDIO_TRACK_INIT_FAILED);
    }
  }

  /** See {@link AudioSink.Listener#onPositionDiscontinuity()}. */
  @CallSuper
  protected void onPositionDiscontinuity() {
    // We are out of sync so allow currentPositionUs to jump backwards.
    allowPositionDiscontinuity = true;
  }

  @Override
  protected void onEnabled(boolean joining, boolean mayRenderStartOfStream)
      throws ExoPlaybackException {
    super.onEnabled(joining, mayRenderStartOfStream);
    eventDispatcher.enabled(decoderCounters);
    if (getConfiguration().tunneling) {
      audioSink.enableTunnelingV21();
    } else {
      audioSink.disableTunneling();
    }
    audioSink.setPlayerId(getPlayerId());
  }

  @Override
  protected void onPositionReset(long positionUs, boolean joining) throws ExoPlaybackException {
    super.onPositionReset(positionUs, joining);
    if (experimentalKeepAudioTrackOnSeek) {
      audioSink.experimentalFlushWithoutAudioTrackRelease();
    } else {
      audioSink.flush();
    }

    currentPositionUs = positionUs;
    allowFirstBufferPositionDiscontinuity = true;
    allowPositionDiscontinuity = true;
  }

  @Override
  protected void onStarted() {
    super.onStarted();
    audioSink.play();
  }

  @Override
  protected void onStopped() {
    updateCurrentPosition();
    audioSink.pause();
    super.onStopped();
  }

  @Override
  protected void onDisabled() {
    audioSinkNeedsReset = true;
    try {
      audioSink.flush();
    } finally {
      try {
        super.onDisabled();
      } finally {
        eventDispatcher.disabled(decoderCounters);
      }
    }
  }

  @Override
  protected void onReset() {
    try {
      super.onReset();
    } finally {
      if (audioSinkNeedsReset) {
        audioSinkNeedsReset = false;
        audioSink.reset();
      }
    }
  }

  @Override
  public boolean isEnded() {
    return super.isEnded() && audioSink.isEnded();
  }

  @Override
  public boolean isReady() {
    return audioSink.hasPendingData() || super.isReady();
  }

  @Override
  public long getPositionUs() {
    if (getState() == STATE_STARTED) {
      updateCurrentPosition();
    }
    return currentPositionUs;
  }

  @Override
  public void setPlaybackParameters(PlaybackParameters playbackParameters) {
    audioSink.setPlaybackParameters(playbackParameters);
  }

  @Override
  public PlaybackParameters getPlaybackParameters() {
    return audioSink.getPlaybackParameters();
  }

  @Override
  protected void onQueueInputBuffer(DecoderInputBuffer buffer) {
    if (allowFirstBufferPositionDiscontinuity && !buffer.isDecodeOnly()) {
      // TODO: Remove this hack once we have a proper fix for [Internal: b/71876314].
      // Allow the position to jump if the first presentable input buffer has a timestamp that
      // differs significantly from what was expected.
      if (Math.abs(buffer.timeUs - currentPositionUs) > 500000) {
        currentPositionUs = buffer.timeUs;
      }
      allowFirstBufferPositionDiscontinuity = false;
    }
  }

  @Override
  protected void onProcessedStreamChange() {
    super.onProcessedStreamChange();
    audioSink.handleDiscontinuity();
  }

  @Override
  protected boolean processOutputBuffer(
      long positionUs,
      long elapsedRealtimeUs,
      @Nullable MediaCodecAdapter codec,
      @Nullable ByteBuffer buffer,
      int bufferIndex,
      int bufferFlags,
      int sampleCount,
      long bufferPresentationTimeUs,
      boolean isDecodeOnlyBuffer,
      boolean isLastBuffer,
      Format format)
      throws ExoPlaybackException {
    checkNotNull(buffer);

    if (decryptOnlyCodecFormat != null
        && (bufferFlags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != 0) {
      // Discard output buffers from the passthrough (raw) decoder containing codec specific data.
      checkNotNull(codec).releaseOutputBuffer(bufferIndex, false);
      return true;
    }

    if (isDecodeOnlyBuffer) {
      if (codec != null) {
        codec.releaseOutputBuffer(bufferIndex, false);
      }
      decoderCounters.skippedOutputBufferCount += sampleCount;
      audioSink.handleDiscontinuity();
      return true;
    }

    boolean fullyConsumed;
    try {
      fullyConsumed = audioSink.handleBuffer(buffer, bufferPresentationTimeUs, sampleCount);
    } catch (InitializationException e) {
      throw createRendererException(
          e, e.format, e.isRecoverable, PlaybackException.ERROR_CODE_AUDIO_TRACK_INIT_FAILED);
    } catch (WriteException e) {
      throw createRendererException(
          e, format, e.isRecoverable, PlaybackException.ERROR_CODE_AUDIO_TRACK_WRITE_FAILED);
    }

    if (fullyConsumed) {
      if (codec != null) {
        codec.releaseOutputBuffer(bufferIndex, false);
      }
      decoderCounters.renderedOutputBufferCount += sampleCount;
      return true;
    }

    return false;
  }

  @Override
  protected void renderToEndOfStream() throws ExoPlaybackException {
    try {
      audioSink.playToEndOfStream();
    } catch (AudioSink.WriteException e) {
      throw createRendererException(
          e, e.format, e.isRecoverable, PlaybackException.ERROR_CODE_AUDIO_TRACK_WRITE_FAILED);
    }
  }

  @Override
  public void handleMessage(@MessageType int messageType, @Nullable Object message)
      throws ExoPlaybackException {
    switch (messageType) {
      case MSG_SET_VOLUME:
        audioSink.setVolume((Float) message);
        break;
      case MSG_SET_AUDIO_ATTRIBUTES:
        AudioAttributes audioAttributes = (AudioAttributes) message;
        audioSink.setAudioAttributes(audioAttributes);
        break;
      case MSG_SET_AUX_EFFECT_INFO:
        AuxEffectInfo auxEffectInfo = (AuxEffectInfo) message;
        audioSink.setAuxEffectInfo(auxEffectInfo);
        break;
      case MSG_SET_SKIP_SILENCE_ENABLED:
        audioSink.setSkipSilenceEnabled((Boolean) message);
        break;
      case MSG_SET_AUDIO_SESSION_ID:
        audioSink.setAudioSessionId((Integer) message);
        break;
      case MSG_SET_WAKEUP_LISTENER:
        this.wakeupListener = (WakeupListener) message;
        break;
      case MSG_SET_CAMERA_MOTION_LISTENER:
      case MSG_SET_CHANGE_FRAME_RATE_STRATEGY:
      case MSG_SET_SCALING_MODE:
      case MSG_SET_VIDEO_FRAME_METADATA_LISTENER:
      case MSG_SET_VIDEO_OUTPUT:
      default:
        super.handleMessage(messageType, message);
        break;
    }
  }

  /**
   * Returns a maximum input size suitable for configuring a codec for {@code format} in a way that
   * will allow possible adaptation to other compatible formats in {@code streamFormats}.
   *
   * @param codecInfo A {@link MediaCodecInfo} describing the decoder.
   * @param format The {@link Format} for which the codec is being configured.
   * @param streamFormats The possible stream formats.
   * @return A suitable maximum input size.
   */
  protected int getCodecMaxInputSize(
      MediaCodecInfo codecInfo, Format format, Format[] streamFormats) {
    int maxInputSize = getCodecMaxInputSize(codecInfo, format);
    if (streamFormats.length == 1) {
      // The single entry in streamFormats must correspond to the format for which the codec is
      // being configured.
      return maxInputSize;
    }
    for (Format streamFormat : streamFormats) {
      if (codecInfo.canReuseCodec(format, streamFormat).result != REUSE_RESULT_NO) {
        maxInputSize = max(maxInputSize, getCodecMaxInputSize(codecInfo, streamFormat));
      }
    }
    return maxInputSize;
  }

  /**
   * Returns a maximum input buffer size for a given {@link Format}.
   *
   * @param codecInfo A {@link MediaCodecInfo} describing the decoder.
   * @param format The {@link Format}.
   * @return A maximum input buffer size in bytes, or {@link Format#NO_VALUE} if a maximum could not
   *     be determined.
   */
  private int getCodecMaxInputSize(MediaCodecInfo codecInfo, Format format) {
    if ("OMX.google.raw.decoder".equals(codecInfo.name)) {
      // OMX.google.raw.decoder didn't resize its output buffers correctly prior to N, except on
      // Android TV running M, so there's no point requesting a non-default input size. Doing so may
      // cause a native crash, whereas not doing so will cause a more controlled failure when
      // attempting to fill an input buffer. See: https://github.com/google/ExoPlayer/issues/4057.
      if (Util.SDK_INT < 24 && !(Util.SDK_INT == 23 && Util.isTv(context))) {
        return Format.NO_VALUE;
      }
    }
    return format.maxInputSize;
  }

  /**
   * Returns the framework {@link MediaFormat} that can be used to configure a {@link MediaCodec}
   * for decoding the given {@link Format} for playback.
   *
   * @param format The {@link Format} of the media.
   * @param codecMimeType The MIME type handled by the codec.
   * @param codecMaxInputSize The maximum input size supported by the codec.
   * @param codecOperatingRate The codec operating rate, or {@link #CODEC_OPERATING_RATE_UNSET} if
   *     no codec operating rate should be set.
   * @return The framework {@link MediaFormat}.
   */
  @SuppressLint("InlinedApi")
  protected MediaFormat getMediaFormat(
      Format format, String codecMimeType, int codecMaxInputSize, float codecOperatingRate) {
    MediaFormat mediaFormat = new MediaFormat();
    // Set format parameters that should always be set.
    mediaFormat.setString(MediaFormat.KEY_MIME, codecMimeType);
    mediaFormat.setInteger(MediaFormat.KEY_CHANNEL_COUNT, format.channelCount);
    mediaFormat.setInteger(MediaFormat.KEY_SAMPLE_RATE, format.sampleRate);
    MediaFormatUtil.setCsdBuffers(mediaFormat, format.initializationData);
    // Set codec max values.
    MediaFormatUtil.maybeSetInteger(mediaFormat, MediaFormat.KEY_MAX_INPUT_SIZE, codecMaxInputSize);
    // Set codec configuration values.
    if (Util.SDK_INT >= 23) {
      mediaFormat.setInteger(MediaFormat.KEY_PRIORITY, 0 /* realtime priority */);
      if (codecOperatingRate != CODEC_OPERATING_RATE_UNSET && !deviceDoesntSupportOperatingRate()) {
        mediaFormat.setFloat(MediaFormat.KEY_OPERATING_RATE, codecOperatingRate);
      }
    }
    if (Util.SDK_INT <= 28 && MimeTypes.AUDIO_AC4.equals(format.sampleMimeType)) {
      // On some older builds, the AC-4 decoder expects to receive samples formatted as raw frames
      // not sync frames. Set a format key to override this.
      mediaFormat.setInteger("ac4-is-sync", 1);
    }
    if (Util.SDK_INT >= 24
        && audioSink.getFormatSupport(
                Util.getPcmFormat(C.ENCODING_PCM_FLOAT, format.channelCount, format.sampleRate))
            == AudioSink.SINK_FORMAT_SUPPORTED_DIRECTLY) {
      mediaFormat.setInteger(MediaFormat.KEY_PCM_ENCODING, AudioFormat.ENCODING_PCM_FLOAT);
    }
    if (Util.SDK_INT >= 32) {
      // TODO[b/190759307] Use MediaFormat.KEY_MAX_OUTPUT_CHANNEL_COUNT once the
      //  compile SDK target is set to 32.
      mediaFormat.setInteger("max-output-channel-count", 99);
    }

    return mediaFormat;
  }

  private void updateCurrentPosition() {
    long newCurrentPositionUs = audioSink.getCurrentPositionUs(isEnded());
    if (newCurrentPositionUs != AudioSink.CURRENT_POSITION_NOT_SET) {
      currentPositionUs =
          allowPositionDiscontinuity
              ? newCurrentPositionUs
              : max(currentPositionUs, newCurrentPositionUs);
      allowPositionDiscontinuity = false;
    }
  }

  /**
   * Returns whether the device's decoders are known to not support setting the codec operating
   * rate.
   *
   * <p>See <a href="https://github.com/google/ExoPlayer/issues/5821">GitHub issue #5821</a>.
   */
  private static boolean deviceDoesntSupportOperatingRate() {
    return Util.SDK_INT == 23
        && ("ZTE B2017G".equals(Util.MODEL) || "AXON 7 mini".equals(Util.MODEL));
  }

  /**
   * Returns whether the decoder is known to output six audio channels when provided with input with
   * fewer than six channels.
   *
   * <p>See [Internal: b/35655036].
   */
  private static boolean codecNeedsDiscardChannelsWorkaround(String codecName) {
    // The workaround applies to Samsung Galaxy S6 and Samsung Galaxy S7.
    return Util.SDK_INT < 24
        && "OMX.SEC.aac.dec".equals(codecName)
        && "samsung".equals(Util.MANUFACTURER)
        && (Util.DEVICE.startsWith("zeroflte")
            || Util.DEVICE.startsWith("herolte")
            || Util.DEVICE.startsWith("heroqlte"));
  }

  private final class AudioSinkListener implements AudioSink.Listener {

    @Override
    public void onPositionDiscontinuity() {
      MediaCodecAudioRenderer.this.onPositionDiscontinuity();
    }

    @Override
    public void onPositionAdvancing(long playoutStartSystemTimeMs) {
      eventDispatcher.positionAdvancing(playoutStartSystemTimeMs);
    }

    @Override
    public void onUnderrun(int bufferSize, long bufferSizeMs, long elapsedSinceLastFeedMs) {
      eventDispatcher.underrun(bufferSize, bufferSizeMs, elapsedSinceLastFeedMs);
    }

    @Override
    public void onSkipSilenceEnabledChanged(boolean skipSilenceEnabled) {
      eventDispatcher.skipSilenceEnabledChanged(skipSilenceEnabled);
    }

    @Override
    public void onOffloadBufferEmptying() {
      if (wakeupListener != null) {
        wakeupListener.onWakeup();
      }
    }

    @Override
    public void onOffloadBufferFull(long bufferEmptyingDeadlineMs) {
      if (wakeupListener != null) {
        wakeupListener.onSleep(bufferEmptyingDeadlineMs);
      }
    }

    @Override
    public void onAudioSinkError(Exception audioSinkError) {
      Log.e(TAG, "Audio sink error", audioSinkError);
      eventDispatcher.audioSinkError(audioSinkError);
    }
  }
}