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Merge pull request #149 from google/dev

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dev -> dev-hls
This commit is contained in:
ojw28 2014-11-19 10:10:53 +00:00
commit 87d0be252e
17 changed files with 1446 additions and 704 deletions
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4
demo/src/main/java/com/google/android/exoplayer/demo/full/EventLogger.java
View File

@ -16,8 +16,8 @@
package com.google.android.exoplayer.demo.full;
import com.google.android.exoplayer.ExoPlayer;
import com.google.android.exoplayer.MediaCodecAudioTrackRenderer.AudioTrackInitializationException;
import com.google.android.exoplayer.MediaCodecTrackRenderer.DecoderInitializationException;
import com.google.android.exoplayer.audio.AudioTrack;
import com.google.android.exoplayer.demo.full.player.DemoPlayer;
import com.google.android.exoplayer.util.VerboseLogUtil;
@ -149,7 +149,7 @@ public class EventLogger implements DemoPlayer.Listener, DemoPlayer.InfoListener
}
@Override
public void onAudioTrackInitializationError(AudioTrackInitializationException e) {
public void onAudioTrackInitializationError(AudioTrack.InitializationException e) {
printInternalError("audioTrackInitializationError", e);
}

6
demo/src/main/java/com/google/android/exoplayer/demo/full/player/DemoPlayer.java
View File

@ -19,10 +19,10 @@ import com.google.android.exoplayer.DummyTrackRenderer;
import com.google.android.exoplayer.ExoPlaybackException;
import com.google.android.exoplayer.ExoPlayer;
import com.google.android.exoplayer.MediaCodecAudioTrackRenderer;
import com.google.android.exoplayer.MediaCodecAudioTrackRenderer.AudioTrackInitializationException;
import com.google.android.exoplayer.MediaCodecTrackRenderer.DecoderInitializationException;
import com.google.android.exoplayer.MediaCodecVideoTrackRenderer;
import com.google.android.exoplayer.TrackRenderer;
import com.google.android.exoplayer.audio.AudioTrack;
import com.google.android.exoplayer.chunk.ChunkSampleSource;
import com.google.android.exoplayer.chunk.MultiTrackChunkSource;
import com.google.android.exoplayer.drm.StreamingDrmSessionManager;
@ -110,7 +110,7 @@ public class DemoPlayer implements ExoPlayer.Listener, ChunkSampleSource.EventLi
*/
public interface InternalErrorListener {
void onRendererInitializationError(Exception e);
void onAudioTrackInitializationError(AudioTrackInitializationException e);
void onAudioTrackInitializationError(AudioTrack.InitializationException e);
void onDecoderInitializationError(DecoderInitializationException e);
void onCryptoError(CryptoException e);
void onUpstreamError(int sourceId, IOException e);
@ -454,7 +454,7 @@ public class DemoPlayer implements ExoPlayer.Listener, ChunkSampleSource.EventLi
}
@Override
public void onAudioTrackInitializationError(AudioTrackInitializationException e) {
public void onAudioTrackInitializationError(AudioTrack.InitializationException e) {
if (internalErrorListener != null) {
internalErrorListener.onAudioTrackInitializationError(e);
}

2
library/src/main/java/com/google/android/exoplayer/DecoderInfo.java
View File

@ -29,7 +29,7 @@ public final class DecoderInfo {
public final String name;
/**
* Whether the decoder is adaptive.
* Whether the decoder supports seamless resolution switches.
*
* @see android.media.MediaCodecInfo.CodecCapabilities#isFeatureSupported(String)
* @see android.media.MediaCodecInfo.CodecCapabilities#FEATURE_AdaptivePlayback

12
library/src/main/java/com/google/android/exoplayer/ExoPlayerImplInternal.java
View File

@ -17,9 +17,9 @@ package com.google.android.exoplayer;
import com.google.android.exoplayer.ExoPlayer.ExoPlayerComponent;
import com.google.android.exoplayer.util.Assertions;
import com.google.android.exoplayer.util.PriorityHandlerThread;
import com.google.android.exoplayer.util.TraceUtil;
import android.annotation.SuppressLint;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.Looper;
@ -83,7 +83,6 @@ import java.util.List;
private volatile long positionUs;
private volatile long bufferedPositionUs;
@SuppressLint("HandlerLeak")
public ExoPlayerImplInternal(Handler eventHandler, boolean playWhenReady,
boolean[] rendererEnabledFlags, int minBufferMs, int minRebufferMs) {
this.eventHandler = eventHandler;
@ -101,15 +100,10 @@ import java.util.List;
mediaClock = new MediaClock();
enabledRenderers = new ArrayList<TrackRenderer>(rendererEnabledFlags.length);
internalPlaybackThread = new HandlerThread(getClass().getSimpleName() + ":Handler") {
@Override
public void run() {
// Note: The documentation for Process.THREAD_PRIORITY_AUDIO that states "Applications can
// not normally change to this priority" is incorrect.
Process.setThreadPriority(Process.THREAD_PRIORITY_AUDIO);
super.run();
}
};
internalPlaybackThread = new PriorityHandlerThread(getClass().getSimpleName() + ":Handler",
Process.THREAD_PRIORITY_AUDIO);
internalPlaybackThread.start();
handler = new Handler(internalPlaybackThread.getLooper(), this);
}

633
library/src/main/java/com/google/android/exoplayer/MediaCodecAudioTrackRenderer.java
View File

@ -15,28 +15,21 @@
*/
package com.google.android.exoplayer;
import com.google.android.exoplayer.audio.AudioTrack;
import com.google.android.exoplayer.drm.DrmSessionManager;
import com.google.android.exoplayer.util.Assertions;
import com.google.android.exoplayer.util.MimeTypes;
import com.google.android.exoplayer.util.Util;
import android.annotation.TargetApi;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTimestamp;
import android.media.AudioTrack;
import android.media.MediaCodec;
import android.media.MediaFormat;
import android.media.audiofx.Virtualizer;
import android.os.ConditionVariable;
import android.os.Handler;
import android.util.Log;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
/**
* Decodes and renders audio using {@link MediaCodec} and {@link AudioTrack}.
* Decodes and renders audio using {@link MediaCodec} and {@link android.media.AudioTrack}.
*/
@TargetApi(16)
public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
@ -52,26 +45,7 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
*
* @param e The corresponding exception.
*/
void onAudioTrackInitializationError(AudioTrackInitializationException e);
}
/**
* Thrown when a failure occurs instantiating an audio track.
*/
public static class AudioTrackInitializationException extends Exception {
/**
* The state as reported by {@link AudioTrack#getState()}
*/
public final int audioTrackState;
public AudioTrackInitializationException(int audioTrackState, int sampleRate,
int channelConfig, int bufferSize) {
super("AudioTrack init failed: " + audioTrackState + ", Config(" + sampleRate + ", "
+ channelConfig + ", " + bufferSize + ")");
this.audioTrackState = audioTrackState;
}
void onAudioTrackInitializationError(AudioTrack.InitializationException e);
}
@ -82,73 +56,12 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
*/
public static final int MSG_SET_VOLUME = 1;
/**
* The default multiplication factor used when determining the size of the underlying
* {@link AudioTrack}'s buffer.
*/
public static final float DEFAULT_MIN_BUFFER_MULTIPLICATION_FACTOR = 4;
private static final String TAG = "MediaCodecAudioTrackRenderer";
private static final long MICROS_PER_SECOND = 1000000L;
/**
* AudioTrack timestamps are deemed spurious if they are offset from the system clock by more
* than this amount.
* <p>
* This is a fail safe that should not be required on correctly functioning devices.
*/
private static final long MAX_AUDIO_TIMESTAMP_OFFSET_US = 10 * MICROS_PER_SECOND;
/**
* AudioTrack latencies are deemed impossibly large if they are greater than this amount.
* <p>
* This is a fail safe that should not be required on correctly functioning devices.
*/
private static final long MAX_AUDIO_TRACK_LATENCY_US = 10 * MICROS_PER_SECOND;
private static final int MAX_PLAYHEAD_OFFSET_COUNT = 10;
private static final int MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US = 30000;
private static final int MIN_TIMESTAMP_SAMPLE_INTERVAL_US = 500000;
private static final int START_NOT_SET = 0;
private static final int START_IN_SYNC = 1;
private static final int START_NEED_SYNC = 2;
private final EventListener eventListener;
private final ConditionVariable audioTrackReleasingConditionVariable;
private final AudioTimestampCompat audioTimestampCompat;
private final long[] playheadOffsets;
private final float minBufferMultiplicationFactor;
private int nextPlayheadOffsetIndex;
private int playheadOffsetCount;
private long smoothedPlayheadOffsetUs;
private long lastPlayheadSampleTimeUs;
private boolean audioTimestampSet;
private long lastTimestampSampleTimeUs;
private long lastRawPlaybackHeadPosition;
private long rawPlaybackHeadWrapCount;
private int sampleRate;
private int frameSize;
private int channelConfig;
private int minBufferSize;
private int bufferSize;
private AudioTrack audioTrack;
private Method audioTrackGetLatencyMethod;
private final AudioTrack audioTrack;
private int audioSessionId;
private long submittedBytes;
private int audioTrackStartMediaTimeState;
private long audioTrackStartMediaTimeUs;
private long audioTrackResumeSystemTimeUs;
private long lastReportedCurrentPositionUs;
private long audioTrackLatencyUs;
private float volume;
private byte[] temporaryBuffer;
private int temporaryBufferOffset;
private int temporaryBufferSize;
private long currentPositionUs;
/**
* @param source The upstream source from which the renderer obtains samples.
@ -198,15 +111,16 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
*/
public MediaCodecAudioTrackRenderer(SampleSource source, DrmSessionManager drmSessionManager,
boolean playClearSamplesWithoutKeys, Handler eventHandler, EventListener eventListener) {
this(source, drmSessionManager, playClearSamplesWithoutKeys,
DEFAULT_MIN_BUFFER_MULTIPLICATION_FACTOR, eventHandler, eventListener);
this(source, drmSessionManager, playClearSamplesWithoutKeys, eventHandler, eventListener,
new AudioTrack());
}
/**
* @param source The upstream source from which the renderer obtains samples.
* @param minBufferMultiplicationFactor When instantiating an underlying {@link AudioTrack},
* the size of the track's is calculated as this value multiplied by the minimum buffer size
* obtained from {@link AudioTrack#getMinBufferSize(int, int, int)}. The multiplication
* @param minBufferMultiplicationFactor When instantiating an underlying
* {@link android.media.AudioTrack}, the size of the track is calculated as this value
* multiplied by the minimum buffer size obtained from
* {@link android.media.AudioTrack#getMinBufferSize(int, int, int)}. The multiplication
* factor must be greater than or equal to 1.
* @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
* null if delivery of events is not required.
@ -226,9 +140,10 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
* begin in parallel with key acquisision. This parameter specifies whether the renderer is
* permitted to play clear regions of encrypted media files before {@code drmSessionManager}
* has obtained the keys necessary to decrypt encrypted regions of the media.
* @param minBufferMultiplicationFactor When instantiating an underlying {@link AudioTrack},
* the size of the track's is calculated as this value multiplied by the minimum buffer size
* obtained from {@link AudioTrack#getMinBufferSize(int, int, int)}. The multiplication
* @param minBufferMultiplicationFactor When instantiating an underlying
* {@link android.media.AudioTrack}, the size of the track is calculated as this value
* multiplied by the minimum buffer size obtained from
* {@link android.media.AudioTrack#getMinBufferSize(int, int, int)}. The multiplication
* factor must be greater than or equal to 1.
* @param eventHandler A handler to use when delivering events to {@code eventListener}. May be
* null if delivery of events is not required.
@ -237,25 +152,31 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
public MediaCodecAudioTrackRenderer(SampleSource source, DrmSessionManager drmSessionManager,
boolean playClearSamplesWithoutKeys, float minBufferMultiplicationFactor,
Handler eventHandler, EventListener eventListener) {
this(source, drmSessionManager, playClearSamplesWithoutKeys, eventHandler, eventListener,
new AudioTrack(minBufferMultiplicationFactor));
}
/**
* @param source The upstream source from which the renderer obtains samples.
* @param drmSessionManager For use with encrypted content. May be null if support for encrypted
* content is not required.
* @param playClearSamplesWithoutKeys Encrypted media may contain clear (un-encrypted) regions.
* For example a media file may start with a short clear region so as to allow playback to
* begin in parallel with key acquisision. This parameter specifies whether the renderer is
* permitted to play clear regions of encrypted media files before {@code drmSessionManager}
* has obtained the keys necessary to decrypt encrypted regions of the media.
* @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 audioTrack Used for playing back decoded audio samples.
*/
public MediaCodecAudioTrackRenderer(SampleSource source, DrmSessionManager drmSessionManager,
boolean playClearSamplesWithoutKeys, Handler eventHandler, EventListener eventListener,
AudioTrack audioTrack) {
super(source, drmSessionManager, playClearSamplesWithoutKeys, eventHandler, eventListener);
Assertions.checkState(minBufferMultiplicationFactor >= 1);
this.minBufferMultiplicationFactor = minBufferMultiplicationFactor;
this.eventListener = eventListener;
audioTrackReleasingConditionVariable = new ConditionVariable(true);
if (Util.SDK_INT >= 19) {
audioTimestampCompat = new AudioTimestampCompatV19();
} else {
audioTimestampCompat = new NoopAudioTimestampCompat();
}
if (Util.SDK_INT >= 18) {
try {
audioTrackGetLatencyMethod = AudioTrack.class.getMethod("getLatency", (Class<?>[]) null);
} catch (NoSuchMethodException e) {
// There's no guarantee this method exists. Do nothing.
}
}
playheadOffsets = new long[MAX_PLAYHEAD_OFFSET_COUNT];
volume = 1.0f;
this.audioTrack = Assertions.checkNotNull(audioTrack);
this.audioSessionId = AudioTrack.SESSION_ID_NOT_SET;
}
@Override
@ -271,104 +192,12 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
@Override
protected void onEnabled(long positionUs, boolean joining) {
super.onEnabled(positionUs, joining);
lastReportedCurrentPositionUs = Long.MIN_VALUE;
}
@Override
protected void doSomeWork(long positionUs, long elapsedRealtimeUs) throws ExoPlaybackException {
super.doSomeWork(positionUs, elapsedRealtimeUs);
maybeSampleSyncParams();
currentPositionUs = Long.MIN_VALUE;
}
@Override
protected void onOutputFormatChanged(MediaFormat format) {
int channelCount = format.getInteger(MediaFormat.KEY_CHANNEL_COUNT);
int channelConfig;
switch (channelCount) {
case 1:
channelConfig = AudioFormat.CHANNEL_OUT_MONO;
break;
case 2:
channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
break;
case 6:
channelConfig = AudioFormat.CHANNEL_OUT_5POINT1;
break;
case 8:
channelConfig = AudioFormat.CHANNEL_OUT_7POINT1;
break;
default:
throw new IllegalArgumentException("Unsupported channel count: " + channelCount);
}
int sampleRate = format.getInteger(MediaFormat.KEY_SAMPLE_RATE);
if (audioTrack != null && this.sampleRate == sampleRate
&& this.channelConfig == channelConfig) {
// We already have an existing audio track with the correct sample rate and channel config.
return;
}
releaseAudioTrack();
this.sampleRate = sampleRate;
this.channelConfig = channelConfig;
this.minBufferSize = AudioTrack.getMinBufferSize(sampleRate, channelConfig,
AudioFormat.ENCODING_PCM_16BIT);
this.bufferSize = (int) (minBufferMultiplicationFactor * minBufferSize);
this.frameSize = 2 * channelCount; // 2 bytes per 16 bit sample * number of channels.
}
private void initAudioTrack() throws ExoPlaybackException {
// If we're asynchronously releasing a previous audio track then we block until it has been
// released. This guarantees that we cannot end up in a state where we have multiple audio
// track instances. Without this guarantee it would be possible, in extreme cases, to exhaust
// the shared memory that's available for audio track buffers. This would in turn cause the
// initialization of the audio track to fail.
audioTrackReleasingConditionVariable.block();
if (audioSessionId == 0) {
audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig,
AudioFormat.ENCODING_PCM_16BIT, bufferSize, AudioTrack.MODE_STREAM);
checkAudioTrackInitialized();
audioSessionId = audioTrack.getAudioSessionId();
onAudioSessionId(audioSessionId);
} else {
// Re-attach to the same audio session.
audioTrack = new AudioTrack(AudioManager.STREAM_MUSIC, sampleRate, channelConfig,
AudioFormat.ENCODING_PCM_16BIT, bufferSize, AudioTrack.MODE_STREAM, audioSessionId);
checkAudioTrackInitialized();
}
setVolume(volume);
if (getState() == TrackRenderer.STATE_STARTED) {
audioTrackResumeSystemTimeUs = System.nanoTime() / 1000;
audioTrack.play();
}
}
/**
* Checks that {@link #audioTrack} has been successfully initialized. If it has then calling this
* method is a no-op. If it hasn't then {@link #audioTrack} is released and set to null, and an
* exception is thrown.
*
* @throws ExoPlaybackException If {@link #audioTrack} has not been successfully initialized.
*/
private void checkAudioTrackInitialized() throws ExoPlaybackException {
int audioTrackState = audioTrack.getState();
if (audioTrackState == AudioTrack.STATE_INITIALIZED) {
return;
}
// The track is not successfully initialized. Release and null the track.
try {
audioTrack.release();
} catch (Exception e) {
// The track has already failed to initialize, so it wouldn't be that surprising if release
// were to fail too. Swallow the exception.
} finally {
audioTrack = null;
}
// Propagate the relevant exceptions.
AudioTrackInitializationException exception = new AudioTrackInitializationException(
audioTrackState, sampleRate, channelConfig, bufferSize);
notifyAudioTrackInitializationError(exception);
throw new ExoPlaybackException(exception);
audioTrack.reconfigure(format);
}
/**
@ -387,51 +216,15 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
// Do nothing.
}
private void releaseAudioTrack() {
if (audioTrack != null) {
submittedBytes = 0;
temporaryBufferSize = 0;
lastRawPlaybackHeadPosition = 0;
rawPlaybackHeadWrapCount = 0;
audioTrackStartMediaTimeUs = 0;
audioTrackStartMediaTimeState = START_NOT_SET;
resetSyncParams();
int playState = audioTrack.getPlayState();
if (playState == AudioTrack.PLAYSTATE_PLAYING) {
audioTrack.pause();
}
// AudioTrack.release can take some time, so we call it on a background thread.
final AudioTrack toRelease = audioTrack;
audioTrack = null;
audioTrackReleasingConditionVariable.close();
new Thread() {
@Override
public void run() {
try {
toRelease.release();
} finally {
audioTrackReleasingConditionVariable.open();
}
}
}.start();
}
}
@Override
protected void onStarted() {
super.onStarted();
if (audioTrack != null) {
audioTrackResumeSystemTimeUs = System.nanoTime() / 1000;
audioTrack.play();
}
}
@Override
protected void onStopped() {
if (audioTrack != null) {
resetSyncParams();
audioTrack.pause();
}
super.onStopped();
}
@ -439,149 +232,34 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
protected boolean isEnded() {
// We've exhausted the output stream, and the AudioTrack has either played all of the data
// submitted, or has been fed insufficient data to begin playback.
return super.isEnded() && (getPendingFrameCount() == 0 || submittedBytes < minBufferSize);
return super.isEnded() && (!audioTrack.hasPendingData()
|| !audioTrack.hasEnoughDataToBeginPlayback());
}
@Override
protected boolean isReady() {
return getPendingFrameCount() > 0
return audioTrack.hasPendingData()
|| (super.isReady() && getSourceState() == SOURCE_STATE_READY_READ_MAY_FAIL);
}
/**
* This method uses a variety of techniques to compute the current position:
*
* 1. Prior to playback having started, calls up to the super class to obtain the pending seek
* position.
* 2. During playback, uses AudioTimestamps obtained from AudioTrack.getTimestamp on supported
* devices.
* 3. Else, derives a smoothed position by sampling the AudioTrack's frame position.
*/
@Override
protected long getCurrentPositionUs() {
long systemClockUs = System.nanoTime() / 1000;
long currentPositionUs;
if (audioTrack == null || audioTrackStartMediaTimeState == START_NOT_SET) {
// The AudioTrack hasn't started.
currentPositionUs = super.getCurrentPositionUs();
} else if (audioTimestampSet) {
// How long ago in the past the audio timestamp is (negative if it's in the future)
long presentationDiff = systemClockUs - (audioTimestampCompat.getNanoTime() / 1000);
long framesDiff = durationUsToFrames(presentationDiff);
// The position of the frame that's currently being presented.
long currentFramePosition = audioTimestampCompat.getFramePosition() + framesDiff;
currentPositionUs = framesToDurationUs(currentFramePosition) + audioTrackStartMediaTimeUs;
long audioTrackCurrentPositionUs = audioTrack.getCurrentPositionUs(isEnded());
if (audioTrackCurrentPositionUs == AudioTrack.CURRENT_POSITION_NOT_SET) {
// Use the super class position before audio playback starts.
currentPositionUs = Math.max(currentPositionUs, super.getCurrentPositionUs());
} else {
if (playheadOffsetCount == 0) {
// The AudioTrack has started, but we don't have any samples to compute a smoothed position.
currentPositionUs = getPlayheadPositionUs() + audioTrackStartMediaTimeUs;
} else {
// getPlayheadPositionUs() only has a granularity of ~20ms, so we base the position off the
// system clock (and a smoothed offset between it and the playhead position) so as to
// prevent jitter in the reported positions.
currentPositionUs = systemClockUs + smoothedPlayheadOffsetUs + audioTrackStartMediaTimeUs;
// Make sure we don't ever report time moving backwards.
currentPositionUs = Math.max(currentPositionUs, audioTrackCurrentPositionUs);
}
if (!isEnded()) {
currentPositionUs -= audioTrackLatencyUs;
}
}
// Make sure we don't ever report time moving backwards as a result of smoothing or switching
// between the various code paths above.
currentPositionUs = Math.max(lastReportedCurrentPositionUs, currentPositionUs);
lastReportedCurrentPositionUs = currentPositionUs;
return currentPositionUs;
}
private void maybeSampleSyncParams() {
if (audioTrack == null || audioTrackStartMediaTimeState == START_NOT_SET
|| getState() != STATE_STARTED) {
// The AudioTrack isn't playing.
return;
}
long playheadPositionUs = getPlayheadPositionUs();
if (playheadPositionUs == 0) {
// The AudioTrack hasn't output anything yet.
return;
}
long systemClockUs = System.nanoTime() / 1000;
if (systemClockUs - lastPlayheadSampleTimeUs >= MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US) {
// Take a new sample and update the smoothed offset between the system clock and the playhead.
playheadOffsets[nextPlayheadOffsetIndex] = playheadPositionUs - systemClockUs;
nextPlayheadOffsetIndex = (nextPlayheadOffsetIndex + 1) % MAX_PLAYHEAD_OFFSET_COUNT;
if (playheadOffsetCount < MAX_PLAYHEAD_OFFSET_COUNT) {
playheadOffsetCount++;
}
lastPlayheadSampleTimeUs = systemClockUs;
smoothedPlayheadOffsetUs = 0;
for (int i = 0; i < playheadOffsetCount; i++) {
smoothedPlayheadOffsetUs += playheadOffsets[i] / playheadOffsetCount;
}
}
if (systemClockUs - lastTimestampSampleTimeUs >= MIN_TIMESTAMP_SAMPLE_INTERVAL_US) {
audioTimestampSet = audioTimestampCompat.update(audioTrack);
if (audioTimestampSet) {
// Perform sanity checks on the timestamp.
long audioTimestampUs = audioTimestampCompat.getNanoTime() / 1000;
if (audioTimestampUs < audioTrackResumeSystemTimeUs) {
// The timestamp corresponds to a time before the track was most recently resumed.
audioTimestampSet = false;
} else if (Math.abs(audioTimestampUs - systemClockUs) > MAX_AUDIO_TIMESTAMP_OFFSET_US) {
// The timestamp time base is probably wrong.
audioTimestampSet = false;
Log.w(TAG, "Spurious audio timestamp: " + audioTimestampCompat.getFramePosition() + ", "
+ audioTimestampUs + ", " + systemClockUs);
}
}
if (audioTrackGetLatencyMethod != null) {
try {
// Compute the audio track latency, excluding the latency due to the buffer (leaving
// latency due to the mixer and audio hardware driver).
audioTrackLatencyUs =
(Integer) audioTrackGetLatencyMethod.invoke(audioTrack, (Object[]) null) * 1000L
- framesToDurationUs(bufferSize / frameSize);
// Sanity check that the latency is non-negative.
audioTrackLatencyUs = Math.max(audioTrackLatencyUs, 0);
// Sanity check that the latency isn't too large.
if (audioTrackLatencyUs > MAX_AUDIO_TRACK_LATENCY_US) {
Log.w(TAG, "Ignoring impossibly large audio latency: " + audioTrackLatencyUs);
audioTrackLatencyUs = 0;
}
} catch (Exception e) {
// The method existed, but doesn't work. Don't try again.
audioTrackGetLatencyMethod = null;
}
}
lastTimestampSampleTimeUs = systemClockUs;
}
}
private void resetSyncParams() {
smoothedPlayheadOffsetUs = 0;
playheadOffsetCount = 0;
nextPlayheadOffsetIndex = 0;
lastPlayheadSampleTimeUs = 0;
audioTimestampSet = false;
lastTimestampSampleTimeUs = 0;
}
private long getPlayheadPositionUs() {
return framesToDurationUs(getPlaybackHeadPosition());
}
private long framesToDurationUs(long frameCount) {
return (frameCount * MICROS_PER_SECOND) / sampleRate;
}
private long durationUsToFrames(long durationUs) {
return (durationUs * sampleRate) / MICROS_PER_SECOND;
}
@Override
protected void onDisabled() {
audioSessionId = 0;
audioSessionId = AudioTrack.SESSION_ID_NOT_SET;
try {
releaseAudioTrack();
audioTrack.reset();
} finally {
super.onDisabled();
}
@ -591,8 +269,8 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
protected void seekTo(long positionUs) throws ExoPlaybackException {
super.seekTo(positionUs);
// TODO: Try and re-use the same AudioTrack instance once [redacted] is fixed.
releaseAudioTrack();
lastReportedCurrentPositionUs = Long.MIN_VALUE;
audioTrack.reset();
currentPositionUs = Long.MIN_VALUE;
}
@Override
@ -602,74 +280,39 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
if (shouldSkip) {
codec.releaseOutputBuffer(bufferIndex, false);
codecCounters.skippedOutputBufferCount++;
if (audioTrackStartMediaTimeState == START_IN_SYNC) {
// Skipping the sample will push track time out of sync. We'll need to sync again.
audioTrackStartMediaTimeState = START_NEED_SYNC;
}
audioTrack.handleDiscontinuity();
return true;
}
if (temporaryBufferSize == 0) {
// This is the first time we've seen this {@code buffer}.
// Note: presentationTimeUs corresponds to the end of the sample, not the start.
long bufferStartTime = bufferInfo.presentationTimeUs
- framesToDurationUs(bufferInfo.size / frameSize);
if (audioTrackStartMediaTimeState == START_NOT_SET) {
audioTrackStartMediaTimeUs = Math.max(0, bufferStartTime);
audioTrackStartMediaTimeState = START_IN_SYNC;
// Initialize and start the audio track now.
if (!audioTrack.isInitialized()) {
try {
if (audioSessionId != AudioTrack.SESSION_ID_NOT_SET) {
audioTrack.initialize(audioSessionId);
} else {
// Sanity check that bufferStartTime is consistent with the expected value.
long expectedBufferStartTime = audioTrackStartMediaTimeUs
+ framesToDurationUs(submittedBytes / frameSize);
if (audioTrackStartMediaTimeState == START_IN_SYNC
&& Math.abs(expectedBufferStartTime - bufferStartTime) > 200000) {
Log.e(TAG, "Discontinuity detected [expected " + expectedBufferStartTime + ", got "
+ bufferStartTime + "]");
audioTrackStartMediaTimeState = START_NEED_SYNC;
audioSessionId = audioTrack.initialize();
onAudioSessionId(audioSessionId);
}
if (audioTrackStartMediaTimeState == START_NEED_SYNC) {
// Adjust audioTrackStartMediaTimeUs to be consistent with the current buffer's start
// time and the number of bytes submitted. Also reset lastReportedCurrentPositionUs to
// allow time to jump backwards if it really wants to.
audioTrackStartMediaTimeUs += (bufferStartTime - expectedBufferStartTime);
audioTrackStartMediaTimeState = START_IN_SYNC;
lastReportedCurrentPositionUs = Long.MIN_VALUE;
} catch (AudioTrack.InitializationException e) {
notifyAudioTrackInitializationError(e);
throw new ExoPlaybackException(e);
}
if (getState() == TrackRenderer.STATE_STARTED) {
audioTrack.play();
}
}
temporaryBufferSize = bufferInfo.size;
buffer.position(bufferInfo.offset);
if (Util.SDK_INT < 21) {
// Copy {@code buffer} into {@code temporaryBuffer}.
if (temporaryBuffer == null || temporaryBuffer.length < bufferInfo.size) {
temporaryBuffer = new byte[bufferInfo.size];
}
buffer.get(temporaryBuffer, 0, bufferInfo.size);
temporaryBufferOffset = 0;
}
int handleBufferResult = audioTrack.handleBuffer(
buffer, bufferInfo.offset, bufferInfo.size, bufferInfo.presentationTimeUs);
// If we are out of sync, allow currentPositionUs to jump backwards.
if ((handleBufferResult & AudioTrack.RESULT_POSITION_DISCONTINUITY) != 0) {
currentPositionUs = Long.MIN_VALUE;
}
if (audioTrack == null) {
initAudioTrack();
}
int bytesWritten = 0;
if (Util.SDK_INT < 21) {
// Work out how many bytes we can write without the risk of blocking.
int bytesPending = (int) (submittedBytes - getPlaybackHeadPosition() * frameSize);
int bytesToWrite = bufferSize - bytesPending;
if (bytesToWrite > 0) {
bytesToWrite = Math.min(temporaryBufferSize, bytesToWrite);
bytesWritten = audioTrack.write(temporaryBuffer, temporaryBufferOffset, bytesToWrite);
temporaryBufferOffset += bytesWritten;
}
} else {
bytesWritten = writeNonBlockingV21(audioTrack, buffer, temporaryBufferSize);
}
temporaryBufferSize -= bytesWritten;
submittedBytes += bytesWritten;
if (temporaryBufferSize == 0) {
// Release the buffer if it was consumed.
if ((handleBufferResult & AudioTrack.RESULT_BUFFER_CONSUMED) != 0) {
codec.releaseOutputBuffer(bufferIndex, false);
codecCounters.renderedOutputBufferCount++;
return true;
@ -678,66 +321,16 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
return false;
}
@TargetApi(21)
private static int writeNonBlockingV21(AudioTrack audioTrack, ByteBuffer buffer, int size) {
return audioTrack.write(buffer, size, AudioTrack.WRITE_NON_BLOCKING);
}
/**
* {@link AudioTrack#getPlaybackHeadPosition()} returns a value intended to be interpreted as
* an unsigned 32 bit integer, which also wraps around periodically. This method returns the
* playback head position as a long that will only wrap around if the value exceeds
* {@link Long#MAX_VALUE} (which in practice will never happen).
*
* @return {@link AudioTrack#getPlaybackHeadPosition()} of {@link #audioTrack} expressed as a
* long.
*/
private long getPlaybackHeadPosition() {
long rawPlaybackHeadPosition = 0xFFFFFFFFL & audioTrack.getPlaybackHeadPosition();
if (lastRawPlaybackHeadPosition > rawPlaybackHeadPosition) {
// The value must have wrapped around.
rawPlaybackHeadWrapCount++;
}
lastRawPlaybackHeadPosition = rawPlaybackHeadPosition;
return rawPlaybackHeadPosition + (rawPlaybackHeadWrapCount << 32);
}
private int getPendingFrameCount() {
return audioTrack == null
? 0 : (int) (submittedBytes / frameSize - getPlaybackHeadPosition());
}
@Override
public void handleMessage(int messageType, Object message) throws ExoPlaybackException {
if (messageType == MSG_SET_VOLUME) {
setVolume((Float) message);
audioTrack.setVolume((Float) message);
} else {
super.handleMessage(messageType, message);
}
}
private void setVolume(float volume) {
this.volume = volume;
if (audioTrack != null) {
if (Util.SDK_INT >= 21) {
setVolumeV21(audioTrack, volume);
} else {
setVolumeV3(audioTrack, volume);
}
}
}
@TargetApi(21)
private static void setVolumeV21(AudioTrack audioTrack, float volume) {
audioTrack.setVolume(volume);
}
@SuppressWarnings("deprecation")
private static void setVolumeV3(AudioTrack audioTrack, float volume) {
audioTrack.setStereoVolume(volume, volume);
}
private void notifyAudioTrackInitializationError(final AudioTrackInitializationException e) {
private void notifyAudioTrackInitializationError(final AudioTrack.InitializationException e) {
if (eventHandler != null && eventListener != null) {
eventHandler.post(new Runnable() {
@Override
@ -748,74 +341,4 @@ public class MediaCodecAudioTrackRenderer extends MediaCodecTrackRenderer {
}
}
/**
* Interface exposing the {@link AudioTimestamp} methods we need that were added in SDK 19.
*/
private interface AudioTimestampCompat {
/**
* Returns true if the audioTimestamp was retrieved from the audioTrack.
*/
boolean update(AudioTrack audioTrack);
long getNanoTime();
long getFramePosition();
}
/**
* The AudioTimestampCompat implementation for SDK < 19 that does nothing or throws an exception.
*/
private static final class NoopAudioTimestampCompat implements AudioTimestampCompat {
@Override
public boolean update(AudioTrack audioTrack) {
return false;
}
@Override
public long getNanoTime() {
// Should never be called if initTimestamp() returned false.
throw new UnsupportedOperationException();
}
@Override
public long getFramePosition() {
// Should never be called if initTimestamp() returned false.
throw new UnsupportedOperationException();
}
}
/**
* The AudioTimestampCompat implementation for SDK >= 19 that simply calls through to the actual
* implementations added in SDK 19.
*/
@TargetApi(19)
private static final class AudioTimestampCompatV19 implements AudioTimestampCompat {
private final AudioTimestamp audioTimestamp;
public AudioTimestampCompatV19() {
audioTimestamp = new AudioTimestamp();
}
@Override
public boolean update(AudioTrack audioTrack) {
return audioTrack.getTimestamp(audioTimestamp);
}
@Override
public long getNanoTime() {
return audioTimestamp.nanoTime;
}
@Override
public long getFramePosition() {
return audioTimestamp.framePosition;
}
}
}

13
library/src/main/java/com/google/android/exoplayer/MediaCodecTrackRenderer.java
View File

@ -280,11 +280,9 @@ public abstract class MediaCodecTrackRenderer extends TrackRenderer {
}
}
DecoderInfo selectedDecoderInfo = MediaCodecUtil.getDecoderInfo(mimeType);
DecoderInfo selectedDecoderInfo = MediaCodecUtil.getDecoderInfo(mimeType,
requiresSecureDecoder);
String selectedDecoderName = selectedDecoderInfo.name;
if (requiresSecureDecoder) {
selectedDecoderName = getSecureDecoderName(selectedDecoderName);
}
codecIsAdaptive = selectedDecoderInfo.adaptive;
try {
codec = MediaCodec.createByCodecName(selectedDecoderName);
@ -765,13 +763,6 @@ public abstract class MediaCodecTrackRenderer extends TrackRenderer {
MediaCodec codec, ByteBuffer buffer, MediaCodec.BufferInfo bufferInfo, int bufferIndex,
boolean shouldSkip) throws ExoPlaybackException;
/**
* Returns the name of the secure variant of a given decoder.
*/
private static String getSecureDecoderName(String rawDecoderName) {
return rawDecoderName + ".secure";
}
private void notifyDecoderInitializationError(final DecoderInitializationException e) {
if (eventHandler != null && eventListener != null) {
eventHandler.post(new Runnable() {

207
library/src/main/java/com/google/android/exoplayer/MediaCodecUtil.java
View File

@ -23,6 +23,7 @@ import android.media.MediaCodecInfo;
import android.media.MediaCodecInfo.CodecCapabilities;
import android.media.MediaCodecInfo.CodecProfileLevel;
import android.media.MediaCodecList;
import android.text.TextUtils;
import android.util.Pair;
import java.util.HashMap;
@ -33,60 +34,79 @@ import java.util.HashMap;
@TargetApi(16)
public class MediaCodecUtil {
private static final HashMap<String, Pair<MediaCodecInfo, CodecCapabilities>> codecs =
new HashMap<String, Pair<MediaCodecInfo, CodecCapabilities>>();
private static final HashMap<CodecKey, Pair<String, CodecCapabilities>> codecs =
new HashMap<CodecKey, Pair<String, CodecCapabilities>>();
/**
* Get information about the decoder that will be used for a given mime type. If no decoder
* exists for the mime type then null is returned.
* Get information about the decoder that will be used for a given mime type.
*
* @param mimeType The mime type.
* @param secure Whether the decoder is required to support secure decryption. Always pass false
* unless secure decryption really is required.
* @return Information about the decoder that will be used, or null if no decoder exists.
*/
public static DecoderInfo getDecoderInfo(String mimeType) {
Pair<MediaCodecInfo, CodecCapabilities> info = getMediaCodecInfo(mimeType);
public static DecoderInfo getDecoderInfo(String mimeType, boolean secure) {
Pair<String, CodecCapabilities> info = getMediaCodecInfo(mimeType, secure);
if (info == null) {
return null;
}
return new DecoderInfo(info.first.getName(), isAdaptive(info.second));
return new DecoderInfo(info.first, isAdaptive(info.second));
}
/**
* Optional call to warm the codec cache. Call from any appropriate
* place to hide latency.
*/
public static synchronized void warmCodecs(String[] mimeTypes) {
for (int i = 0; i < mimeTypes.length; i++) {
getMediaCodecInfo(mimeTypes[i]);
}
}
/**
* Returns the best decoder and its capabilities for the given mimeType. If there's no decoder
* returns null.
* Optional call to warm the codec cache for a given mime type.
* <p>
* Calling this method may speed up subsequent calls to {@link #getDecoderInfo(String, boolean)}.
*
* TODO: We need to use the new object based MediaCodecList API.
* @param mimeType The mime type.
* @param secure Whether the decoder is required to support secure decryption. Always pass false
* unless secure decryption really is required.
*/
@SuppressWarnings("deprecation")
private static synchronized Pair<MediaCodecInfo, CodecCapabilities> getMediaCodecInfo(
String mimeType) {
Pair<MediaCodecInfo, CodecCapabilities> result = codecs.get(mimeType);
if (result != null) {
return result;
public static synchronized void warmCodec(String mimeType, boolean secure) {
getMediaCodecInfo(mimeType, secure);
}
int numberOfCodecs = MediaCodecList.getCodecCount();
/**
* Returns the name of the best decoder and its capabilities for the given mimeType.
*/
private static synchronized Pair<String, CodecCapabilities> getMediaCodecInfo(
String mimeType, boolean secure) {
CodecKey key = new CodecKey(mimeType, secure);
if (codecs.containsKey(key)) {
return codecs.get(key);
}
MediaCodecListCompat mediaCodecList = Util.SDK_INT >= 21
? new MediaCodecListCompatV21(secure) : new MediaCodecListCompatV16();
int numberOfCodecs = mediaCodecList.getCodecCount();
boolean secureDecodersExplicit = mediaCodecList.secureDecodersExplicit();
// Note: MediaCodecList is sorted by the framework such that the best decoders come first.
for (int i = 0; i < numberOfCodecs; i++) {
MediaCodecInfo info = MediaCodecList.getCodecInfoAt(i);
MediaCodecInfo info = mediaCodecList.getCodecInfoAt(i);
String codecName = info.getName();
if (!info.isEncoder() && codecName.startsWith("OMX.") && !codecName.endsWith(".secure")) {
if (!info.isEncoder() && codecName.startsWith("OMX.")
&& (secureDecodersExplicit || !codecName.endsWith(".secure"))) {
String[] supportedTypes = info.getSupportedTypes();
for (int j = 0; j < supportedTypes.length; j++) {
String supportedType = supportedTypes[j];
if (supportedType.equalsIgnoreCase(mimeType)) {
result = Pair.create(info, info.getCapabilitiesForType(supportedType));
codecs.put(mimeType, result);
return result;
CodecCapabilities capabilities = info.getCapabilitiesForType(supportedType);
if (!secureDecodersExplicit) {
// Cache variants for secure and insecure playback. Note that the secure decoder is
// inferred, and may not actually exist.
codecs.put(key.secure ? new CodecKey(mimeType, false) : key,
Pair.create(codecName, capabilities));
codecs.put(key.secure ? key : new CodecKey(mimeType, true),
Pair.create(codecName + ".secure", capabilities));
} else {
// We can only cache this variant. The other should be listed explicitly.
boolean codecSecure = mediaCodecList.isSecurePlaybackSupported(
info.getCapabilitiesForType(supportedType));
codecs.put(key.secure == codecSecure ? key : new CodecKey(mimeType, codecSecure),
Pair.create(codecName, capabilities));
}
if (codecs.containsKey(key)) {
return codecs.get(key);
}
}
}
}
@ -113,7 +133,7 @@ public class MediaCodecUtil {
* @return Whether the specified profile is supported at the specified level.
*/
public static boolean isH264ProfileSupported(int profile, int level) {
Pair<MediaCodecInfo, CodecCapabilities> info = getMediaCodecInfo(MimeTypes.VIDEO_H264);
Pair<String, CodecCapabilities> info = getMediaCodecInfo(MimeTypes.VIDEO_H264, false);
if (info == null) {
return false;
}
@ -133,7 +153,7 @@ public class MediaCodecUtil {
* @return the maximum frame size for an H264 stream that can be decoded on the device.
*/
public static int maxH264DecodableFrameSize() {
Pair<MediaCodecInfo, CodecCapabilities> info = getMediaCodecInfo(MimeTypes.VIDEO_H264);
Pair<String, CodecCapabilities> info = getMediaCodecInfo(MimeTypes.VIDEO_H264, false);
if (info == null) {
return 0;
}
@ -177,4 +197,123 @@ public class MediaCodecUtil {
}
}
private interface MediaCodecListCompat {
/**
* The number of codecs in the list.
*/
public int getCodecCount();
/**
* The info at the specified index in the list.
*
* @param index The index.
*/
public MediaCodecInfo getCodecInfoAt(int index);
/**
* @return Returns whether secure decoders are explicitly listed, if present.
*/
public boolean secureDecodersExplicit();
/**
* Whether secure playback is supported for the given {@link CodecCapabilities}, which should
* have been obtained from a {@link MediaCodecInfo} obtained from this list.
* <p>
* May only be called if {@link #secureDecodersExplicit()} returns true.
*/
public boolean isSecurePlaybackSupported(CodecCapabilities capabilities);
}
@TargetApi(21)
private static final class MediaCodecListCompatV21 implements MediaCodecListCompat {
private final MediaCodecInfo[] mediaCodecInfos;
public MediaCodecListCompatV21(boolean includeSecure) {
int codecKind = includeSecure ? MediaCodecList.ALL_CODECS : MediaCodecList.REGULAR_CODECS;
mediaCodecInfos = new MediaCodecList(codecKind).getCodecInfos();
}
@Override
public int getCodecCount() {
return mediaCodecInfos.length;
}
@Override
public MediaCodecInfo getCodecInfoAt(int index) {
return mediaCodecInfos[index];
}
@Override
public boolean secureDecodersExplicit() {
return true;
}
@Override
public boolean isSecurePlaybackSupported(CodecCapabilities capabilities) {
return capabilities.isFeatureSupported(CodecCapabilities.FEATURE_SecurePlayback);
}
}
@SuppressWarnings("deprecation")
private static final class MediaCodecListCompatV16 implements MediaCodecListCompat {
@Override
public int getCodecCount() {
return MediaCodecList.getCodecCount();
}
@Override
public MediaCodecInfo getCodecInfoAt(int index) {
return MediaCodecList.getCodecInfoAt(index);
}
@Override
public boolean secureDecodersExplicit() {
return false;
}
@Override
public boolean isSecurePlaybackSupported(CodecCapabilities capabilities) {
throw new UnsupportedOperationException();
}
}
private static final class CodecKey {
public final String mimeType;
public final boolean secure;
public CodecKey(String mimeType, boolean secure) {
this.mimeType = mimeType;
this.secure = secure;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((mimeType == null) ? 0 : mimeType.hashCode());
result = prime * result + (secure ? 1231 : 1237);
return result;
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
}
if (obj == null || obj.getClass() != CodecKey.class) {
return false;
}
CodecKey other = (CodecKey) obj;
return TextUtils.equals(mimeType, other.mimeType) && secure == other.secure;
}
}
}

97
library/src/main/java/com/google/android/exoplayer/audio/AudioCapabilities.java Normal file
View File

@ -0,0 +1,97 @@
/*
* Copyright (C) 2014 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 com.google.android.exoplayer.audio;
import com.google.android.exoplayer.util.Util;
import android.annotation.TargetApi;
import android.media.AudioFormat;
import java.util.HashSet;
import java.util.Set;
/**
* Represents the set of audio formats a device is capable of playing back.
*/
@TargetApi(21)
public final class AudioCapabilities {
private final Set<Integer> supportedEncodings;
private final int maxChannelCount;
/**
* Constructs new audio capabilities based on a set of supported encodings and a maximum channel
* count.
*
* @param supportedEncodings Supported audio encodings from {@link android.media.AudioFormat}'s
* {@code ENCODING_*} constants.
* @param maxChannelCount The maximum number of audio channels that can be played simultaneously.
*/
public AudioCapabilities(int[] supportedEncodings, int maxChannelCount) {
this.supportedEncodings = new HashSet<Integer>();
if (supportedEncodings != null) {
for (int i : supportedEncodings) {
this.supportedEncodings.add(i);
}
}
this.maxChannelCount = maxChannelCount;
}
/** Returns whether the device supports playback of AC-3. */
public boolean supportsAc3() {
return Util.SDK_INT >= 21 && supportedEncodings.contains(AudioFormat.ENCODING_AC3);
}
/** Returns whether the device supports playback of enhanced AC-3. */
public boolean supportsEAc3() {
return Util.SDK_INT >= 21 && supportedEncodings.contains(AudioFormat.ENCODING_E_AC3);
}
/** Returns whether the device supports playback of 16-bit PCM. */
public boolean supportsPcm() {
return supportedEncodings.contains(AudioFormat.ENCODING_PCM_16BIT);
}
/** Returns the maximum number of channels the device can play at the same time. */
public int getMaxChannelCount() {
return maxChannelCount;
}
@Override
public boolean equals(Object other) {
if (this == other) {
return true;
}
if (!(other instanceof AudioCapabilities)) {
return false;
}
AudioCapabilities audioCapabilities = (AudioCapabilities) other;
return supportedEncodings.equals(audioCapabilities.supportedEncodings)
&& maxChannelCount == audioCapabilities.maxChannelCount;
}
@Override
public int hashCode() {
return maxChannelCount + 31 * supportedEncodings.hashCode();
}
@Override
public String toString() {
return "AudioCapabilities[maxChannelCount=" + maxChannelCount
+ ", supportedEncodings=" + supportedEncodings + "]";
}
}

101
library/src/main/java/com/google/android/exoplayer/audio/AudioCapabilitiesReceiver.java Normal file
View File

@ -0,0 +1,101 @@
/*
* Copyright (C) 2014 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 com.google.android.exoplayer.audio;
import com.google.android.exoplayer.util.Assertions;
import com.google.android.exoplayer.util.Util;
import android.annotation.TargetApi;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.media.AudioFormat;
import android.media.AudioManager;
/**
* Notifies a listener when the audio playback capabilities change. Call {@link #register} to start
* receiving notifications, and {@link #unregister} to stop.
*/
public final class AudioCapabilitiesReceiver {
/** Listener notified when audio capabilities change. */
public interface Listener {
/** Called when the audio capabilities change. */
void onAudioCapabilitiesChanged(AudioCapabilities audioCapabilities);
}
/** Default to stereo PCM on SDK <= 21 and when HDMI is unplugged. */
private static final AudioCapabilities DEFAULT_AUDIO_CAPABILITIES =
new AudioCapabilities(new int[] {AudioFormat.ENCODING_PCM_16BIT}, 2);
private final Context context;
private final Listener listener;
private final BroadcastReceiver receiver;
/**
* Constructs a new audio capabilities receiver.
*
* @param context Application context for registering to receive broadcasts.
* @param listener Listener to notify when audio capabilities change.
*/
public AudioCapabilitiesReceiver(Context context, Listener listener) {
this.context = Assertions.checkNotNull(context);
this.listener = Assertions.checkNotNull(listener);
this.receiver = Util.SDK_INT >= 21 ? new HdmiAudioPlugBroadcastReceiver() : null;
}
/**
* Registers to notify the listener when audio capabilities change. The listener will immediately
* receive the current audio capabilities. It is important to call {@link #unregister} so that
* the listener can be garbage collected.
*/
@TargetApi(21)
public void register() {
if (receiver != null) {
context.registerReceiver(receiver, new IntentFilter(AudioManager.ACTION_HDMI_AUDIO_PLUG));
}
listener.onAudioCapabilitiesChanged(DEFAULT_AUDIO_CAPABILITIES);
}
/** Unregisters to stop notifying the listener when audio capabilities change. */
public void unregister() {
if (receiver != null) {
context.unregisterReceiver(receiver);
}
}
@TargetApi(21)
private final class HdmiAudioPlugBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (!action.equals(AudioManager.ACTION_HDMI_AUDIO_PLUG)) {
return;
}
listener.onAudioCapabilitiesChanged(
new AudioCapabilities(intent.getIntArrayExtra(AudioManager.EXTRA_ENCODINGS),
intent.getIntExtra(AudioManager.EXTRA_MAX_CHANNEL_COUNT, 0)));
}
}
}

716
library/src/main/java/com/google/android/exoplayer/audio/AudioTrack.java Normal file
View File

@ -0,0 +1,716 @@
/*
* Copyright (C) 2014 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 com.google.android.exoplayer.audio;
import com.google.android.exoplayer.ExoPlaybackException;
import com.google.android.exoplayer.util.Assertions;
import com.google.android.exoplayer.util.Util;
import android.annotation.TargetApi;
import android.media.AudioFormat;
import android.media.AudioManager;
import android.media.AudioTimestamp;
import android.media.MediaFormat;
import android.os.ConditionVariable;
import android.util.Log;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
/**
* Plays audio data. The implementation delegates to an {@link android.media.AudioTrack} and handles
* playback position smoothing, non-blocking writes and reconfiguration.
*
* <p>If {@link #isInitialized} returns {@code false}, the instance can be {@link #initialize}d.
* After initialization, start playback by calling {@link #play}.
*
* <p>Call {@link #handleBuffer} to write data for playback.
*
* <p>Call {@link #handleDiscontinuity} when a buffer is skipped.
*
* <p>Call {@link #reconfigure} when the output format changes.
*
* <p>Call {@link #reset} to free resources. It is safe to re-{@link #initialize} the instance.
*/
@TargetApi(16)
public final class AudioTrack {
/**
* Thrown when a failure occurs instantiating an {@link android.media.AudioTrack}.
*/
public static class InitializationException extends Exception {
/** The state as reported by {@link android.media.AudioTrack#getState()}. */
public final int audioTrackState;
public InitializationException(
int audioTrackState, int sampleRate, int channelConfig, int bufferSize) {
super("AudioTrack init failed: " + audioTrackState + ", Config(" + sampleRate + ", "
+ channelConfig + ", " + bufferSize + ")");
this.audioTrackState = audioTrackState;
}
}
/** Returned in the result of {@link #handleBuffer} if the buffer was discontinuous. */
public static final int RESULT_POSITION_DISCONTINUITY = 1;
/** Returned in the result of {@link #handleBuffer} if the buffer can be released. */
public static final int RESULT_BUFFER_CONSUMED = 2;
/** Represents an unset {@link android.media.AudioTrack} session identifier. */
public static final int SESSION_ID_NOT_SET = 0;
/** The default multiplication factor used when determining the size of the track's buffer. */
public static final float DEFAULT_MIN_BUFFER_MULTIPLICATION_FACTOR = 4;
/** Returned by {@link #getCurrentPositionUs} when the position is not set. */
public static final long CURRENT_POSITION_NOT_SET = Long.MIN_VALUE;
private static final String TAG = "AudioTrack";
private static final long MICROS_PER_SECOND = 1000000L;
/**
* AudioTrack timestamps are deemed spurious if they are offset from the system clock by more
* than this amount.
*
* <p>This is a fail safe that should not be required on correctly functioning devices.
*/
private static final long MAX_AUDIO_TIMESTAMP_OFFSET_US = 10 * MICROS_PER_SECOND;
/**
* AudioTrack latencies are deemed impossibly large if they are greater than this amount.
*
* <p>This is a fail safe that should not be required on correctly functioning devices.
*/
private static final long MAX_LATENCY_US = 10 * MICROS_PER_SECOND;
private static final int START_NOT_SET = 0;
private static final int START_IN_SYNC = 1;
private static final int START_NEED_SYNC = 2;
private static final int MAX_PLAYHEAD_OFFSET_COUNT = 10;
private static final int MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US = 30000;
private static final int MIN_TIMESTAMP_SAMPLE_INTERVAL_US = 500000;
private final ConditionVariable releasingConditionVariable;
private final AudioTimestampCompat audioTimestampCompat;
private final long[] playheadOffsets;
private final float minBufferMultiplicationFactor;
private android.media.AudioTrack audioTrack;
private int sampleRate;
private int channelConfig;
private int encoding;
private int frameSize;
private int minBufferSize;
private int bufferSize;
private int nextPlayheadOffsetIndex;
private int playheadOffsetCount;
private long smoothedPlayheadOffsetUs;
private long lastPlayheadSampleTimeUs;
private boolean audioTimestampSet;
private long lastTimestampSampleTimeUs;
private long lastRawPlaybackHeadPosition;
private long rawPlaybackHeadWrapCount;
private Method getLatencyMethod;
private long submittedBytes;
private int startMediaTimeState;
private long startMediaTimeUs;
private long resumeSystemTimeUs;
private long latencyUs;
private float volume;
private byte[] temporaryBuffer;
private int temporaryBufferOffset;
private int temporaryBufferSize;
/** Constructs an audio track using the default minimum buffer size multiplier. */
public AudioTrack() {
this(DEFAULT_MIN_BUFFER_MULTIPLICATION_FACTOR);
}
/** Constructs an audio track using the specified minimum buffer size multiplier. */
public AudioTrack(float minBufferMultiplicationFactor) {
Assertions.checkArgument(minBufferMultiplicationFactor >= 1);
this.minBufferMultiplicationFactor = minBufferMultiplicationFactor;
releasingConditionVariable = new ConditionVariable(true);
if (Util.SDK_INT >= 19) {
audioTimestampCompat = new AudioTimestampCompatV19();
} else {
audioTimestampCompat = new NoopAudioTimestampCompat();
}
if (Util.SDK_INT >= 18) {
try {
getLatencyMethod =
android.media.AudioTrack.class.getMethod("getLatency", (Class<?>[]) null);
} catch (NoSuchMethodException e) {
// There's no guarantee this method exists. Do nothing.
}
}
playheadOffsets = new long[MAX_PLAYHEAD_OFFSET_COUNT];
volume = 1.0f;
startMediaTimeState = START_NOT_SET;
}
/**
* Returns whether the audio track has been successfully initialized via {@link #initialize} and
* not yet {@link #reset}.
*/
public boolean isInitialized() {
return audioTrack != null;
}
/**
* Returns the playback position in the stream starting at zero, in microseconds, or
* {@link #CURRENT_POSITION_NOT_SET} if it is not yet available.
*
* <p>If the device supports it, the method uses the playback timestamp from
* {@link android.media.AudioTrack#getTimestamp}. Otherwise, it derives a smoothed position by
* sampling the {@link android.media.AudioTrack}'s frame position.
*
* @param sourceEnded Specify {@code true} if no more input buffers will be provided.
* @return The playback position relative to the start of playback, in microseconds.
*/
public long getCurrentPositionUs(boolean sourceEnded) {
if (!hasCurrentPositionUs()) {
return CURRENT_POSITION_NOT_SET;
}
long systemClockUs = System.nanoTime() / 1000;
long currentPositionUs;
maybeSampleSyncParams();
if (audioTimestampSet) {
// How long ago in the past the audio timestamp is (negative if it's in the future).
long presentationDiff = systemClockUs - (audioTimestampCompat.getNanoTime() / 1000);
long framesDiff = durationUsToFrames(presentationDiff);
// The position of the frame that's currently being presented.
long currentFramePosition = audioTimestampCompat.getFramePosition() + framesDiff;
currentPositionUs = framesToDurationUs(currentFramePosition) + startMediaTimeUs;
} else {
if (playheadOffsetCount == 0) {
// The AudioTrack has started, but we don't have any samples to compute a smoothed position.
currentPositionUs = getPlaybackPositionUs() + startMediaTimeUs;
} else {
// getPlayheadPositionUs() only has a granularity of ~20ms, so we base the position off the
// system clock (and a smoothed offset between it and the playhead position) so as to
// prevent jitter in the reported positions.
currentPositionUs = systemClockUs + smoothedPlayheadOffsetUs + startMediaTimeUs;
}
if (!sourceEnded) {
currentPositionUs -= latencyUs;
}
}
return currentPositionUs;
}
/**
* Initializes the audio track for writing new buffers using {@link #handleBuffer}.
*
* @return The audio track session identifier.
*/
public int initialize() throws InitializationException {
return initialize(SESSION_ID_NOT_SET);
}
/**
* Initializes the audio track for writing new buffers using {@link #handleBuffer}.
*
* @param sessionId Audio track session identifier to re-use, or {@link #SESSION_ID_NOT_SET} to
* create a new one.
* @return The new (or re-used) session identifier.
*/
public int initialize(int sessionId) throws InitializationException {
// If we're asynchronously releasing a previous audio track then we block until it has been
// released. This guarantees that we cannot end up in a state where we have multiple audio
// track instances. Without this guarantee it would be possible, in extreme cases, to exhaust
// the shared memory that's available for audio track buffers. This would in turn cause the
// initialization of the audio track to fail.
releasingConditionVariable.block();
if (sessionId == SESSION_ID_NOT_SET) {
audioTrack = new android.media.AudioTrack(AudioManager.STREAM_MUSIC, sampleRate,
channelConfig, encoding, bufferSize, android.media.AudioTrack.MODE_STREAM);
} else {
// Re-attach to the same audio session.
audioTrack = new android.media.AudioTrack(AudioManager.STREAM_MUSIC, sampleRate,
channelConfig, encoding, bufferSize, android.media.AudioTrack.MODE_STREAM, sessionId);
}
checkAudioTrackInitialized();
setVolume(volume);
return audioTrack.getAudioSessionId();
}
/**
* Reconfigures the audio track to play back media in {@code format}. The encoding is assumed to
* be {@link AudioFormat#ENCODING_PCM_16BIT}.
*/
public void reconfigure(MediaFormat format) {
reconfigure(format, AudioFormat.ENCODING_PCM_16BIT, 0);
}
/**
* Reconfigures the audio track to play back media in {@code format}. Buffers passed to
* {@link #handleBuffer} must using the specified {@code encoding}, which should be a constant
* from {@link AudioFormat}.
*
* @param format Specifies the channel count and sample rate to play back.
* @param encoding The format in which audio is represented.
* @param bufferSize The total size of the playback buffer in bytes. Specify 0 to use a buffer
* size based on the minimum for format.
*/
public void reconfigure(MediaFormat format, int encoding, int bufferSize) {
int channelCount = format.getInteger(MediaFormat.KEY_CHANNEL_COUNT);
int channelConfig;
switch (channelCount) {
case 1:
channelConfig = AudioFormat.CHANNEL_OUT_MONO;
break;
case 2:
channelConfig = AudioFormat.CHANNEL_OUT_STEREO;
break;
case 6:
channelConfig = AudioFormat.CHANNEL_OUT_5POINT1;
break;
case 8:
channelConfig = AudioFormat.CHANNEL_OUT_7POINT1;
break;
default:
throw new IllegalArgumentException("Unsupported channel count: " + channelCount);
}
int sampleRate = format.getInteger(MediaFormat.KEY_SAMPLE_RATE);
// TODO: Does channelConfig determine channelCount?
if (audioTrack != null && this.sampleRate == sampleRate
&& this.channelConfig == channelConfig) {
// We already have an existing audio track with the correct sample rate and channel config.
return;
}
reset();
minBufferSize = android.media.AudioTrack.getMinBufferSize(sampleRate, channelConfig, encoding);
this.encoding = encoding;
this.bufferSize =
bufferSize == 0 ? (int) (minBufferMultiplicationFactor * minBufferSize) : bufferSize;
this.sampleRate = sampleRate;
this.channelConfig = channelConfig;
frameSize = 2 * channelCount; // 2 bytes per 16 bit sample * number of channels.
}
/** Starts/resumes playing audio if the audio track has been initialized. */
public void play() {
if (isInitialized()) {
resumeSystemTimeUs = System.nanoTime() / 1000;
audioTrack.play();
}
}
/** Signals to the audio track that the next buffer is discontinuous with the previous buffer. */
public void handleDiscontinuity() {
// Force resynchronization after a skipped buffer.
if (startMediaTimeState == START_IN_SYNC) {
startMediaTimeState = START_NEED_SYNC;
}
}
/**
* Attempts to write {@code size} bytes from {@code buffer} at {@code offset} to the audio track.
* Returns a bit field containing {@link #RESULT_BUFFER_CONSUMED} if the buffer can be released
* (due to having been written), and {@link #RESULT_POSITION_DISCONTINUITY} if the buffer was
* discontinuous with previously written data.
*
* @param buffer The buffer containing audio data to play back.
* @param offset The offset in the buffer from which to consume data.
* @param size The number of bytes to consume from {@code buffer}.
* @param presentationTimeUs Presentation timestamp of the next buffer in microseconds.
* @return A bit field with {@link #RESULT_BUFFER_CONSUMED} if the buffer can be released, and
* {@link #RESULT_POSITION_DISCONTINUITY} if the buffer was not contiguous with previously
* written data.
*/
public int handleBuffer(ByteBuffer buffer, int offset, int size, long presentationTimeUs) {
int result = 0;
if (temporaryBufferSize == 0 && size != 0) {
// This is the first time we've seen this {@code buffer}.
// Note: presentationTimeUs corresponds to the end of the sample, not the start.
long bufferStartTime = presentationTimeUs - framesToDurationUs(bytesToFrames(size));
if (startMediaTimeUs == START_NOT_SET) {
startMediaTimeUs = Math.max(0, bufferStartTime);
startMediaTimeState = START_IN_SYNC;
} else {
// Sanity check that bufferStartTime is consistent with the expected value.
long expectedBufferStartTime = startMediaTimeUs
+ framesToDurationUs(bytesToFrames(submittedBytes));
if (startMediaTimeState == START_IN_SYNC
&& Math.abs(expectedBufferStartTime - bufferStartTime) > 200000) {
Log.e(TAG, "Discontinuity detected [expected " + expectedBufferStartTime + ", got "
+ bufferStartTime + "]");
startMediaTimeState = START_NEED_SYNC;
}
if (startMediaTimeState == START_NEED_SYNC) {
// Adjust startMediaTimeUs to be consistent with the current buffer's start time and the
// number of bytes submitted.
startMediaTimeUs += (bufferStartTime - expectedBufferStartTime);
startMediaTimeState = START_IN_SYNC;
result = RESULT_POSITION_DISCONTINUITY;
}
}
}
if (size == 0) {
return result;
}
if (temporaryBufferSize == 0) {
temporaryBufferSize = size;
buffer.position(offset);
if (Util.SDK_INT < 21) {
// Copy {@code buffer} into {@code temporaryBuffer}.
if (temporaryBuffer == null || temporaryBuffer.length < size) {
temporaryBuffer = new byte[size];
}
buffer.get(temporaryBuffer, 0, size);
temporaryBufferOffset = 0;
}
}
int bytesWritten = 0;
if (Util.SDK_INT < 21) {
// Work out how many bytes we can write without the risk of blocking.
int bytesPending = (int) (submittedBytes - framesToBytes(getPlaybackPositionFrames()));
int bytesToWrite = bufferSize - bytesPending;
if (bytesToWrite > 0) {
bytesToWrite = Math.min(temporaryBufferSize, bytesToWrite);
bytesWritten = audioTrack.write(temporaryBuffer, temporaryBufferOffset, bytesToWrite);
if (bytesWritten < 0) {
Log.w(TAG, "AudioTrack.write returned error code: " + bytesWritten);
} else {
temporaryBufferOffset += bytesWritten;
}
}
} else {
bytesWritten = writeNonBlockingV21(audioTrack, buffer, temporaryBufferSize);
}
temporaryBufferSize -= bytesWritten;
submittedBytes += bytesWritten;
if (temporaryBufferSize == 0) {
result |= RESULT_BUFFER_CONSUMED;
}
return result;
}
@TargetApi(21)
private static int writeNonBlockingV21(
android.media.AudioTrack audioTrack, ByteBuffer buffer, int size) {
return audioTrack.write(buffer, size, android.media.AudioTrack.WRITE_NON_BLOCKING);
}
/** Returns whether the audio track has more data pending that will be played back. */
public boolean hasPendingData() {
return audioTrack != null && bytesToFrames(submittedBytes) > getPlaybackPositionFrames();
}
/** Returns whether enough data has been supplied via {@link #handleBuffer} to begin playback. */
public boolean hasEnoughDataToBeginPlayback() {
return submittedBytes >= minBufferSize;
}
/** Sets the playback volume. */
public void setVolume(float volume) {
this.volume = volume;
if (audioTrack != null) {
if (Util.SDK_INT >= 21) {
setVolumeV21(audioTrack, volume);
} else {
setVolumeV3(audioTrack, volume);
}
}
}
@TargetApi(21)
private static void setVolumeV21(android.media.AudioTrack audioTrack, float volume) {
audioTrack.setVolume(volume);
}
@SuppressWarnings("deprecation")
private static void setVolumeV3(android.media.AudioTrack audioTrack, float volume) {
audioTrack.setStereoVolume(volume, volume);
}
/** Pauses playback. */
public void pause() {
if (audioTrack != null) {
resetSyncParams();
audioTrack.pause();
}
}
/**
* Releases resources associated with this instance asynchronously. Calling {@link #initialize}
* will block until the audio track has been released, so it is safe to initialize immediately
* after resetting.
*/
public void reset() {
if (audioTrack != null) {
submittedBytes = 0;
temporaryBufferSize = 0;
lastRawPlaybackHeadPosition = 0;
rawPlaybackHeadWrapCount = 0;
startMediaTimeUs = START_NOT_SET;
resetSyncParams();
int playState = audioTrack.getPlayState();
if (playState == android.media.AudioTrack.PLAYSTATE_PLAYING) {
audioTrack.pause();
}
// AudioTrack.release can take some time, so we call it on a background thread.
final android.media.AudioTrack toRelease = audioTrack;
audioTrack = null;
releasingConditionVariable.close();
new Thread() {
@Override
public void run() {
try {
toRelease.release();
} finally {
releasingConditionVariable.open();
}
}
}.start();
}
}
/** Returns whether {@link #getCurrentPositionUs} can return the current playback position. */
private boolean hasCurrentPositionUs() {
return isInitialized() && startMediaTimeUs != START_NOT_SET;
}
/** Updates the audio track latency and playback position parameters. */
private void maybeSampleSyncParams() {
if (!hasCurrentPositionUs()) {
return;
}
long playbackPositionUs = getPlaybackPositionUs();
if (playbackPositionUs == 0) {
// The AudioTrack hasn't output anything yet.
return;
}
long systemClockUs = System.nanoTime() / 1000;
if (systemClockUs - lastPlayheadSampleTimeUs >= MIN_PLAYHEAD_OFFSET_SAMPLE_INTERVAL_US) {
// Take a new sample and update the smoothed offset between the system clock and the playhead.
playheadOffsets[nextPlayheadOffsetIndex] = playbackPositionUs - systemClockUs;
nextPlayheadOffsetIndex = (nextPlayheadOffsetIndex + 1) % MAX_PLAYHEAD_OFFSET_COUNT;
if (playheadOffsetCount < MAX_PLAYHEAD_OFFSET_COUNT) {
playheadOffsetCount++;
}
lastPlayheadSampleTimeUs = systemClockUs;
smoothedPlayheadOffsetUs = 0;
for (int i = 0; i < playheadOffsetCount; i++) {
smoothedPlayheadOffsetUs += playheadOffsets[i] / playheadOffsetCount;
}
}
if (systemClockUs - lastTimestampSampleTimeUs >= MIN_TIMESTAMP_SAMPLE_INTERVAL_US) {
audioTimestampSet = audioTimestampCompat.update(audioTrack);
if (audioTimestampSet) {
// Perform sanity checks on the timestamp.
long audioTimestampUs = audioTimestampCompat.getNanoTime() / 1000;
if (audioTimestampUs < resumeSystemTimeUs) {
// The timestamp corresponds to a time before the track was most recently resumed.
audioTimestampSet = false;
} else if (Math.abs(audioTimestampUs - systemClockUs) > MAX_AUDIO_TIMESTAMP_OFFSET_US) {
// The timestamp time base is probably wrong.
audioTimestampSet = false;
Log.w(TAG, "Spurious audio timestamp: " + audioTimestampCompat.getFramePosition() + ", "
+ audioTimestampUs + ", " + systemClockUs);
}
}
if (getLatencyMethod != null) {
try {
// Compute the audio track latency, excluding the latency due to the buffer (leaving
// latency due to the mixer and audio hardware driver).
latencyUs = (Integer) getLatencyMethod.invoke(audioTrack, (Object[]) null) * 1000L
- framesToDurationUs(bytesToFrames(bufferSize));
// Sanity check that the latency is non-negative.
latencyUs = Math.max(latencyUs, 0);
// Sanity check that the latency isn't too large.
if (latencyUs > MAX_LATENCY_US) {
Log.w(TAG, "Ignoring impossibly large audio latency: " + latencyUs);
latencyUs = 0;
}
} catch (Exception e) {
// The method existed, but doesn't work. Don't try again.
getLatencyMethod = null;
}
}
lastTimestampSampleTimeUs = systemClockUs;
}
}
/**
* Checks that {@link #audioTrack} has been successfully initialized. If it has then calling this
* method is a no-op. If it hasn't then {@link #audioTrack} is released and set to null, and an
* exception is thrown.
*
* @throws ExoPlaybackException If {@link #audioTrack} has not been successfully initialized.
*/
private void checkAudioTrackInitialized() throws InitializationException {
int state = audioTrack.getState();
if (state == android.media.AudioTrack.STATE_INITIALIZED) {
return;
}
// The track is not successfully initialized. Release and null the track.
try {
audioTrack.release();
} catch (Exception e) {
// The track has already failed to initialize, so it wouldn't be that surprising if release
// were to fail too. Swallow the exception.
} finally {
audioTrack = null;
}
throw new InitializationException(state, sampleRate, channelConfig, bufferSize);
}
/**
* {@link android.media.AudioTrack#getPlaybackHeadPosition()} returns a value intended to be
* interpreted as an unsigned 32 bit integer, which also wraps around periodically. This method
* returns the playback head position as a long that will only wrap around if the value exceeds
* {@link Long#MAX_VALUE} (which in practice will never happen).
*
* @return {@link android.media.AudioTrack#getPlaybackHeadPosition()} of {@link #audioTrack}
* expressed as a long.
*/
private long getPlaybackPositionFrames() {
long rawPlaybackHeadPosition = 0xFFFFFFFFL & audioTrack.getPlaybackHeadPosition();
if (lastRawPlaybackHeadPosition > rawPlaybackHeadPosition) {
// The value must have wrapped around.
rawPlaybackHeadWrapCount++;
}
lastRawPlaybackHeadPosition = rawPlaybackHeadPosition;
return rawPlaybackHeadPosition + (rawPlaybackHeadWrapCount << 32);
}
private long getPlaybackPositionUs() {
return framesToDurationUs(getPlaybackPositionFrames());
}
private long framesToBytes(long frameCount) {
return frameCount * frameSize;
}
private long bytesToFrames(long byteCount) {
return byteCount / frameSize;
}
private long framesToDurationUs(long frameCount) {
return (frameCount * MICROS_PER_SECOND) / sampleRate;
}
private long durationUsToFrames(long durationUs) {
return (durationUs * sampleRate) / MICROS_PER_SECOND;
}
private void resetSyncParams() {
smoothedPlayheadOffsetUs = 0;
playheadOffsetCount = 0;
nextPlayheadOffsetIndex = 0;
lastPlayheadSampleTimeUs = 0;
audioTimestampSet = false;
lastTimestampSampleTimeUs = 0;
}
/**
* Interface exposing the {@link android.media.AudioTimestamp} methods we need that were added in
* SDK 19.
*/
private interface AudioTimestampCompat {
/**
* Returns true if the audioTimestamp was retrieved from the audioTrack.
*/
boolean update(android.media.AudioTrack audioTrack);
long getNanoTime();
long getFramePosition();
}
/**
* The AudioTimestampCompat implementation for SDK < 19 that does nothing or throws an exception.
*/
private static final class NoopAudioTimestampCompat implements AudioTimestampCompat {
@Override
public boolean update(android.media.AudioTrack audioTrack) {
return false;
}
@Override
public long getNanoTime() {
// Should never be called if initTimestamp() returned false.
throw new UnsupportedOperationException();
}
@Override
public long getFramePosition() {
// Should never be called if initTimestamp() returned false.
throw new UnsupportedOperationException();
}
}
/**
* The AudioTimestampCompat implementation for SDK >= 19 that simply calls through to the actual
* implementations added in SDK 19.
*/
@TargetApi(19)
private static final class AudioTimestampCompatV19 implements AudioTimestampCompat {
private final AudioTimestamp audioTimestamp;
public AudioTimestampCompatV19() {
audioTimestamp = new AudioTimestamp();
}
@Override
public boolean update(android.media.AudioTrack audioTrack) {
return audioTrack.getTimestamp(audioTimestamp);
}
@Override
public long getNanoTime() {
return audioTimestamp.nanoTime;
}
@Override
public long getFramePosition() {
return audioTimestamp.framePosition;
}
}
}

6
library/src/main/java/com/google/android/exoplayer/dash/DashChunkSource.java
View File

@ -87,7 +87,7 @@ public class DashChunkSource implements ChunkSource {
formats[i] = representations[i].format;
maxWidth = Math.max(formats[i].width, maxWidth);
maxHeight = Math.max(formats[i].height, maxHeight);
Extractor extractor = formats[i].mimeType.startsWith(MimeTypes.VIDEO_WEBM)
Extractor extractor = mimeTypeIsWebm(formats[i].mimeType)
? new WebmExtractor() : new FragmentedMp4Extractor();
extractors.put(formats[i].id, extractor);
this.representations.put(formats[i].id, representations[i]);
@ -197,6 +197,10 @@ public class DashChunkSource implements ChunkSource {
// Do nothing.
}
private boolean mimeTypeIsWebm(String mimeType) {
return mimeType.startsWith(MimeTypes.VIDEO_WEBM) || mimeType.startsWith(MimeTypes.AUDIO_WEBM);
}
private Chunk newInitializationChunk(RangedUri initializationUri, RangedUri indexUri,
Representation representation, Extractor extractor, DataSource dataSource,
int trigger) {

3
library/src/main/java/com/google/android/exoplayer/parser/webm/DefaultEbmlReader.java
View File

@ -16,6 +16,7 @@
package com.google.android.exoplayer.parser.webm;
import com.google.android.exoplayer.C;
import com.google.android.exoplayer.ParserException;
import com.google.android.exoplayer.upstream.NonBlockingInputStream;
import com.google.android.exoplayer.util.Assertions;
@ -134,7 +135,7 @@ import java.util.Stack;
}
@Override
public int read(NonBlockingInputStream inputStream) {
public int read(NonBlockingInputStream inputStream) throws ParserException {
Assertions.checkState(eventHandler != null);
while (true) {
while (!masterElementsStack.isEmpty()

20
library/src/main/java/com/google/android/exoplayer/parser/webm/EbmlEventHandler.java
View File

@ -15,6 +15,7 @@
*/
package com.google.android.exoplayer.parser.webm;
import com.google.android.exoplayer.ParserException;
import com.google.android.exoplayer.upstream.NonBlockingInputStream;
import java.nio.ByteBuffer;
@ -46,41 +47,47 @@ import java.nio.ByteBuffer;
* @param elementOffsetBytes The byte offset where this element starts
* @param headerSizeBytes The byte length of this element's ID and size header
* @param contentsSizeBytes The byte length of this element's children
* @throws ParserException If a parsing error occurs.
*/
public void onMasterElementStart(
int id, long elementOffsetBytes, int headerSizeBytes, long contentsSizeBytes);
int id, long elementOffsetBytes, int headerSizeBytes,
long contentsSizeBytes) throws ParserException;
/**
* Called when a master element has finished reading in all of its children from the
* {@link NonBlockingInputStream}.
*
* @param id The integer ID of this element
* @throws ParserException If a parsing error occurs.
*/
public void onMasterElementEnd(int id);
public void onMasterElementEnd(int id) throws ParserException;
/**
* Called when an integer element is encountered in the {@link NonBlockingInputStream}.
*
* @param id The integer ID of this element
* @param value The integer value this element contains
* @throws ParserException If a parsing error occurs.
*/
public void onIntegerElement(int id, long value);
public void onIntegerElement(int id, long value) throws ParserException;
/**
* Called when a float element is encountered in the {@link NonBlockingInputStream}.
*
* @param id The integer ID of this element
* @param value The float value this element contains
* @throws ParserException If a parsing error occurs.
*/
public void onFloatElement(int id, double value);
public void onFloatElement(int id, double value) throws ParserException;
/**
* Called when a string element is encountered in the {@link NonBlockingInputStream}.
*
* @param id The integer ID of this element
* @param value The string value this element contains
* @throws ParserException If a parsing error occurs.
*/
public void onStringElement(int id, String value);
public void onStringElement(int id, String value) throws ParserException;
/**
* Called when a binary element is encountered in the {@link NonBlockingInputStream}.
@ -109,9 +116,10 @@ import java.nio.ByteBuffer;
* @param inputStream The {@link NonBlockingInputStream} from which this
* element's contents should be read
* @return True if the element was read. False otherwise.
* @throws ParserException If a parsing error occurs.
*/
public boolean onBinaryElement(
int id, long elementOffsetBytes, int headerSizeBytes, int contentsSizeBytes,
NonBlockingInputStream inputStream);
NonBlockingInputStream inputStream) throws ParserException;
}

4
library/src/main/java/com/google/android/exoplayer/parser/webm/EbmlReader.java
View File

@ -15,6 +15,7 @@
*/
package com.google.android.exoplayer.parser.webm;
import com.google.android.exoplayer.ParserException;
import com.google.android.exoplayer.upstream.NonBlockingInputStream;
import java.nio.ByteBuffer;
@ -53,8 +54,9 @@ import java.nio.ByteBuffer;
*
* @param inputStream The input stream from which data should be read
* @return One of the {@code RESULT_*} flags defined in this interface
* @throws ParserException If parsing fails.
*/
public int read(NonBlockingInputStream inputStream);
public int read(NonBlockingInputStream inputStream) throws ParserException;
/**
* The total number of bytes consumed by the reader since first created or last {@link #reset()}.

183
library/src/main/java/com/google/android/exoplayer/parser/webm/WebmExtractor.java
View File

@ -16,6 +16,7 @@
package com.google.android.exoplayer.parser.webm;
import com.google.android.exoplayer.MediaFormat;
import com.google.android.exoplayer.ParserException;
import com.google.android.exoplayer.SampleHolder;
import com.google.android.exoplayer.parser.Extractor;
import com.google.android.exoplayer.parser.SegmentIndex;
@ -27,6 +28,7 @@ import android.annotation.TargetApi;
import android.media.MediaExtractor;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Map;
import java.util.UUID;
@ -44,6 +46,8 @@ public final class WebmExtractor implements Extractor {
private static final String DOC_TYPE_WEBM = "webm";
private static final String CODEC_ID_VP9 = "V_VP9";
private static final String CODEC_ID_VORBIS = "A_VORBIS";
private static final int VORBIS_MAX_INPUT_SIZE = 8192;
private static final int UNKNOWN = -1;
// Element IDs
@ -65,9 +69,13 @@ public final class WebmExtractor implements Extractor {
private static final int ID_TRACKS = 0x1654AE6B;
private static final int ID_TRACK_ENTRY = 0xAE;
private static final int ID_CODEC_ID = 0x86;
private static final int ID_CODEC_PRIVATE = 0x63A2;
private static final int ID_VIDEO = 0xE0;
private static final int ID_PIXEL_WIDTH = 0xB0;
private static final int ID_PIXEL_HEIGHT = 0xBA;
private static final int ID_AUDIO = 0xE1;
private static final int ID_CHANNELS = 0x9F;
private static final int ID_SAMPLING_FREQUENCY = 0xB5;
private static final int ID_CUES = 0x1C53BB6B;
private static final int ID_CUE_POINT = 0xBB;
@ -96,6 +104,10 @@ public final class WebmExtractor implements Extractor {
private long durationUs = UNKNOWN;
private int pixelWidth = UNKNOWN;
private int pixelHeight = UNKNOWN;
private int channelCount = UNKNOWN;
private int sampleRate = UNKNOWN;
private byte[] codecPrivate;
private boolean seenAudioTrack;
private long cuesSizeBytes = UNKNOWN;
private long clusterTimecodeUs = UNKNOWN;
private long simpleBlockTimecodeUs = UNKNOWN;
@ -114,7 +126,8 @@ public final class WebmExtractor implements Extractor {
}
@Override
public int read(NonBlockingInputStream inputStream, SampleHolder sampleHolder) {
public int read(
NonBlockingInputStream inputStream, SampleHolder sampleHolder) throws ParserException {
this.sampleHolder = sampleHolder;
this.readResults = 0;
while ((readResults & READ_TERMINATING_RESULTS) == 0) {
@ -176,6 +189,7 @@ public final class WebmExtractor implements Extractor {
case ID_CLUSTER:
case ID_TRACKS:
case ID_TRACK_ENTRY:
case ID_AUDIO:
case ID_VIDEO:
case ID_CUES:
case ID_CUE_POINT:
@ -187,6 +201,7 @@ public final class WebmExtractor implements Extractor {
case ID_TIME_CODE:
case ID_PIXEL_WIDTH:
case ID_PIXEL_HEIGHT:
case ID_CHANNELS:
case ID_CUE_TIME:
case ID_CUE_CLUSTER_POSITION:
return EbmlReader.TYPE_UNSIGNED_INT;
@ -194,8 +209,10 @@ public final class WebmExtractor implements Extractor {
case ID_CODEC_ID:
return EbmlReader.TYPE_STRING;
case ID_SIMPLE_BLOCK:
case ID_CODEC_PRIVATE:
return EbmlReader.TYPE_BINARY;
case ID_DURATION:
case ID_SAMPLING_FREQUENCY:
return EbmlReader.TYPE_FLOAT;
default:
return EbmlReader.TYPE_UNKNOWN;
@ -203,11 +220,12 @@ public final class WebmExtractor implements Extractor {
}
/* package */ boolean onMasterElementStart(
int id, long elementOffsetBytes, int headerSizeBytes, long contentsSizeBytes) {
int id, long elementOffsetBytes, int headerSizeBytes,
long contentsSizeBytes) throws ParserException {
switch (id) {
case ID_SEGMENT:
if (segmentStartOffsetBytes != UNKNOWN || segmentEndOffsetBytes != UNKNOWN) {
throw new IllegalStateException("Multiple Segment elements not supported");
throw new ParserException("Multiple Segment elements not supported");
}
segmentStartOffsetBytes = elementOffsetBytes + headerSizeBytes;
segmentEndOffsetBytes = elementOffsetBytes + headerSizeBytes + contentsSizeBytes;
@ -223,31 +241,41 @@ public final class WebmExtractor implements Extractor {
return true;
}
/* package */ boolean onMasterElementEnd(int id) {
/* package */ boolean onMasterElementEnd(int id) throws ParserException {
switch (id) {
case ID_CUES:
buildCues();
return false;
case ID_VIDEO:
buildFormat();
buildVideoFormat();
return true;
case ID_AUDIO:
seenAudioTrack = true;
return true;
case ID_TRACK_ENTRY:
if (seenAudioTrack) {
// Audio format has to be built here since codec private may not be available at the end
// of ID_AUDIO.
buildAudioFormat();
}
return true;
default:
return true;
}
}
/* package */ boolean onIntegerElement(int id, long value) {
/* package */ boolean onIntegerElement(int id, long value) throws ParserException {
switch (id) {
case ID_EBML_READ_VERSION:
// Validate that EBMLReadVersion is supported. This extractor only supports v1.
if (value != 1) {
throw new IllegalArgumentException("EBMLReadVersion " + value + " not supported");
throw new ParserException("EBMLReadVersion " + value + " not supported");
}
break;
case ID_DOC_TYPE_READ_VERSION:
// Validate that DocTypeReadVersion is supported. This extractor only supports up to v2.
if (value < 1 || value > 2) {
throw new IllegalArgumentException("DocTypeReadVersion " + value + " not supported");
throw new ParserException("DocTypeReadVersion " + value + " not supported");
}
break;
case ID_TIMECODE_SCALE:
@ -259,6 +287,9 @@ public final class WebmExtractor implements Extractor {
case ID_PIXEL_HEIGHT:
pixelHeight = (int) value;
break;
case ID_CHANNELS:
channelCount = (int) value;
break;
case ID_CUE_TIME:
cueTimesUs.add(scaleTimecodeToUs(value));
break;
@ -275,24 +306,31 @@ public final class WebmExtractor implements Extractor {
}
/* package */ boolean onFloatElement(int id, double value) {
if (id == ID_DURATION) {
switch (id) {
case ID_DURATION:
durationUs = scaleTimecodeToUs((long) value);
break;
case ID_SAMPLING_FREQUENCY:
sampleRate = (int) value;
break;
default:
// pass
}
return true;
}
/* package */ boolean onStringElement(int id, String value) {
/* package */ boolean onStringElement(int id, String value) throws ParserException {
switch (id) {
case ID_DOC_TYPE:
// Validate that DocType is supported. This extractor only supports "webm".
if (!DOC_TYPE_WEBM.equals(value)) {
throw new IllegalArgumentException("DocType " + value + " not supported");
throw new ParserException("DocType " + value + " not supported");
}
break;
case ID_CODEC_ID:
// Validate that CodecID is supported. This extractor only supports "V_VP9".
if (!CODEC_ID_VP9.equals(value)) {
throw new IllegalArgumentException("CodecID " + value + " not supported");
// Validate that CodecID is supported. This extractor only supports "V_VP9" and "A_VORBIS".
if (!CODEC_ID_VP9.equals(value) && !CODEC_ID_VORBIS.equals(value)) {
throw new ParserException("CodecID " + value + " not supported");
}
break;
default:
@ -303,8 +341,9 @@ public final class WebmExtractor implements Extractor {
/* package */ boolean onBinaryElement(
int id, long elementOffsetBytes, int headerSizeBytes, int contentsSizeBytes,
NonBlockingInputStream inputStream) {
if (id == ID_SIMPLE_BLOCK) {
NonBlockingInputStream inputStream) throws ParserException {
switch (id) {
case ID_SIMPLE_BLOCK:
// Please refer to http://www.matroska.org/technical/specs/index.html#simpleblock_structure
// for info about how data is organized in a SimpleBlock element.
@ -344,7 +383,7 @@ public final class WebmExtractor implements Extractor {
case LACING_FIXED:
case LACING_XIPH:
default:
throw new IllegalStateException("Lacing mode " + lacing + " not supported");
throw new ParserException("Lacing mode " + lacing + " not supported");
}
if (sampleHolder.data == null || sampleHolder.data.capacity() < sampleHolder.size) {
@ -359,6 +398,13 @@ public final class WebmExtractor implements Extractor {
reader.readBytes(inputStream, outputData, sampleHolder.size);
}
readResults |= RESULT_READ_SAMPLE;
break;
case ID_CODEC_PRIVATE:
codecPrivate = new byte[contentsSizeBytes];
reader.readBytes(inputStream, codecPrivate, contentsSizeBytes);
break;
default:
// pass
}
return true;
}
@ -372,16 +418,38 @@ public final class WebmExtractor implements Extractor {
*
* <p>Replaces the previous {@link #format} only if video width/height have changed.
* {@link #format} is guaranteed to not be null after calling this method. In
* the event that it can't be built, an {@link IllegalStateException} will be thrown.
* the event that it can't be built, an {@link ParserException} will be thrown.
*/
private void buildFormat() {
private void buildVideoFormat() throws ParserException {
if (pixelWidth != UNKNOWN && pixelHeight != UNKNOWN
&& (format == null || format.width != pixelWidth || format.height != pixelHeight)) {
format = MediaFormat.createVideoFormat(
MimeTypes.VIDEO_VP9, MediaFormat.NO_VALUE, pixelWidth, pixelHeight, null);
readResults |= RESULT_READ_INIT;
} else if (format == null) {
throw new IllegalStateException("Unable to build format");
throw new ParserException("Unable to build format");
}
}
/**
* Build an audio {@link MediaFormat} containing recently gathered Audio information, if needed.
*
* <p>Replaces the previous {@link #format} only if audio channel count/sample rate have changed.
* {@link #format} is guaranteed to not be null after calling this method.
*
* @throws ParserException If an error occurs when parsing codec's private data or if the format
* can't be built.
*/
private void buildAudioFormat() throws ParserException {
if (channelCount != UNKNOWN && sampleRate != UNKNOWN
&& (format == null || format.channelCount != channelCount
|| format.sampleRate != sampleRate)) {
format = MediaFormat.createAudioFormat(
MimeTypes.AUDIO_VORBIS, VORBIS_MAX_INPUT_SIZE,
sampleRate, channelCount, parseVorbisCodecPrivate());
readResults |= RESULT_READ_INIT;
} else if (format == null) {
throw new ParserException("Unable to build format");
}
}
@ -389,18 +457,18 @@ public final class WebmExtractor implements Extractor {
* Build a {@link SegmentIndex} containing recently gathered Cues information.
*
* <p>{@link #cues} is guaranteed to not be null after calling this method. In
* the event that it can't be built, an {@link IllegalStateException} will be thrown.
* the event that it can't be built, an {@link ParserException} will be thrown.
*/
private void buildCues() {
private void buildCues() throws ParserException {
if (segmentStartOffsetBytes == UNKNOWN) {
throw new IllegalStateException("Segment start/end offsets unknown");
throw new ParserException("Segment start/end offsets unknown");
} else if (durationUs == UNKNOWN) {
throw new IllegalStateException("Duration unknown");
throw new ParserException("Duration unknown");
} else if (cuesSizeBytes == UNKNOWN) {
throw new IllegalStateException("Cues size unknown");
throw new ParserException("Cues size unknown");
} else if (cueTimesUs == null || cueClusterPositions == null
|| cueTimesUs.size() == 0 || cueTimesUs.size() != cueClusterPositions.size()) {
throw new IllegalStateException("Invalid/missing cue points");
throw new ParserException("Invalid/missing cue points");
}
int cuePointsSize = cueTimesUs.size();
int[] sizes = new int[cuePointsSize];
@ -423,6 +491,58 @@ public final class WebmExtractor implements Extractor {
readResults |= RESULT_READ_INDEX;
}
/**
* Parses Vorbis Codec Private data and adds it as initialization data to the {@link #format}.
* WebM Vorbis Codec Private data specification can be found
* <a href="http://matroska.org/technical/specs/codecid/index.html">here</a>.
*
* @return ArrayList of byte arrays containing the initialization data on success.
* @throws ParserException If parsing codec private data fails.
*/
private ArrayList<byte[]> parseVorbisCodecPrivate() throws ParserException {
try {
if (codecPrivate[0] != 0x02) {
throw new ParserException("Error parsing vorbis codec private");
}
int offset = 1;
int vorbisInfoLength = 0;
while (codecPrivate[offset] == (byte) 0xFF) {
vorbisInfoLength += 0xFF;
offset++;
}
vorbisInfoLength += codecPrivate[offset++];
int vorbisSkipLength = 0;
while (codecPrivate[offset] == (byte) 0xFF) {
vorbisSkipLength += 0xFF;
offset++;
}
vorbisSkipLength += codecPrivate[offset++];
if (codecPrivate[offset] != 0x01) {
throw new ParserException("Error parsing vorbis codec private");
}
byte[] vorbisInfo = new byte[vorbisInfoLength];
System.arraycopy(codecPrivate, offset, vorbisInfo, 0, vorbisInfoLength);
offset += vorbisInfoLength;
if (codecPrivate[offset] != 0x03) {
throw new ParserException("Error parsing vorbis codec private");
}
offset += vorbisSkipLength;
if (codecPrivate[offset] != 0x05) {
throw new ParserException("Error parsing vorbis codec private");
}
byte[] vorbisBooks = new byte[codecPrivate.length - offset];
System.arraycopy(codecPrivate, offset, vorbisBooks, 0, codecPrivate.length - offset);
ArrayList<byte[]> initializationData = new ArrayList<byte[]>(2);
initializationData.add(vorbisInfo);
initializationData.add(vorbisBooks);
return initializationData;
} catch (ArrayIndexOutOfBoundsException e) {
throw new ParserException("Error parsing vorbis codec private");
}
}
/**
* Passes events through to {@link WebmExtractor} as
* callbacks from {@link EbmlReader} are received.
@ -436,18 +556,19 @@ public final class WebmExtractor implements Extractor {
@Override
public void onMasterElementStart(
int id, long elementOffsetBytes, int headerSizeBytes, long contentsSizeBytes) {
int id, long elementOffsetBytes, int headerSizeBytes,
long contentsSizeBytes) throws ParserException {
WebmExtractor.this.onMasterElementStart(
id, elementOffsetBytes, headerSizeBytes, contentsSizeBytes);
}
@Override
public void onMasterElementEnd(int id) {
public void onMasterElementEnd(int id) throws ParserException {
WebmExtractor.this.onMasterElementEnd(id);
}
@Override
public void onIntegerElement(int id, long value) {
public void onIntegerElement(int id, long value) throws ParserException {
WebmExtractor.this.onIntegerElement(id, value);
}
@ -457,14 +578,14 @@ public final class WebmExtractor implements Extractor {
}
@Override
public void onStringElement(int id, String value) {
public void onStringElement(int id, String value) throws ParserException {
WebmExtractor.this.onStringElement(id, value);
}
@Override
public boolean onBinaryElement(
int id, long elementOffsetBytes, int headerSizeBytes, int contentsSizeBytes,
NonBlockingInputStream inputStream) {
NonBlockingInputStream inputStream) throws ParserException {
return WebmExtractor.this.onBinaryElement(
id, elementOffsetBytes, headerSizeBytes, contentsSizeBytes, inputStream);
}

2
library/src/main/java/com/google/android/exoplayer/util/MimeTypes.java
View File

@ -34,6 +34,8 @@ public class MimeTypes {
public static final String AUDIO_AAC = BASE_TYPE_AUDIO + "/mp4a-latm";
public static final String AUDIO_AC3 = BASE_TYPE_AUDIO + "/ac3";
public static final String AUDIO_EC3 = BASE_TYPE_AUDIO + "/eac3";
public static final String AUDIO_WEBM = BASE_TYPE_AUDIO + "/webm";
public static final String AUDIO_VORBIS = BASE_TYPE_AUDIO + "/vorbis";
public static final String TEXT_VTT = BASE_TYPE_TEXT + "/vtt";

43
library/src/main/java/com/google/android/exoplayer/util/PriorityHandlerThread.java Normal file
View File

@ -0,0 +1,43 @@
/*
* Copyright (C) 2014 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 com.google.android.exoplayer.util;
import android.os.HandlerThread;
import android.os.Process;
/**
* A {@link HandlerThread} with a specified process priority.
*/
public class PriorityHandlerThread extends HandlerThread {
private final int priority;
/**
* @param name The name of the thread.
* @param priority The priority level. See {@link Process#setThreadPriority(int)} for details.
*/
public PriorityHandlerThread(String name, int priority) {
super(name);
this.priority = priority;
}
@Override
public void run() {
Process.setThreadPriority(priority);
super.run();
}
}