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Allow AudioDecoderTrackRenderers to override their output formats.

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-------------
Created by MOE: https://github.com/google/moe
MOE_MIGRATED_REVID=122247516
This commit is contained in:
andrewlewis 2016-05-13 03:58:23 -07:00 committed by Oliver Woodman
parent 403f164b75
commit 7e58f4cd9d
1 changed files with 23 additions and 9 deletions
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32
library/src/main/java/com/google/android/exoplayer/extensions/AudioDecoderTrackRenderer.java
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@ -49,7 +49,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
private final AudioTrackRendererEventListener eventListener;
private final FormatHolder formatHolder;
private Format format;
private Format inputFormat;
private SimpleDecoder<DecoderInputBuffer, ? extends SimpleOutputBuffer,
? extends AudioDecoderException> decoder;
private DecoderInputBuffer inputBuffer;
@ -93,7 +93,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
}
// Try and read a format if we don't have one already.
if (format == null && !readFormat()) {
if (inputFormat == null && !readFormat()) {
// We can't make progress without one.
return;
}
@ -101,7 +101,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
// If we don't have a decoder yet, we need to instantiate one.
if (decoder == null) {
try {
decoder = createDecoder(format);
decoder = createDecoder(inputFormat);
} catch (AudioDecoderException e) {
throw ExoPlaybackException.createForRenderer(e, getIndex());
}
@ -132,6 +132,19 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
protected abstract SimpleDecoder<DecoderInputBuffer, ? extends SimpleOutputBuffer,
? extends AudioDecoderException> createDecoder(Format format) throws AudioDecoderException;
/**
* Returns the format of audio buffers output by the decoder. Will not be called until the first
* output buffer has been dequeued, so the decoder may use input data to determine the format.
* <p>
* The default implementation returns a 16-bit PCM format with the same channel count and sample
* rate as the input.
*/
protected Format getOutputFormat() {
return Format.createAudioSampleFormat(null, MimeTypes.AUDIO_RAW, Format.NO_VALUE,
Format.NO_VALUE, inputFormat.channelCount, inputFormat.sampleRate, C.ENCODING_PCM_16BIT,
null, null, null);
}
private void renderBuffer() throws AudioDecoderException, AudioTrack.InitializationException,
AudioTrack.WriteException {
if (outputStreamEnded) {
@ -154,6 +167,9 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
}
if (!audioTrack.isInitialized()) {
Format outputFormat = getOutputFormat();
audioTrack.configure(outputFormat.sampleMimeType, outputFormat.channelCount,
outputFormat.sampleRate, outputFormat.pcmEncoding);
if (audioSessionId != AudioTrack.SESSION_ID_NOT_SET) {
audioTrack.initialize(audioSessionId);
} else {
@ -197,7 +213,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
return false;
}
if (result == TrackStream.FORMAT_READ) {
format = formatHolder.format;
inputFormat = formatHolder.format;
return true;
}
if (inputBuffer.isEndOfStream()) {
@ -227,7 +243,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
@Override
protected boolean isReady() {
return audioTrack.hasPendingData()
|| (format != null && (isSourceReady() || outputBuffer != null));
|| (inputFormat != null && (isSourceReady() || outputBuffer != null));
}
@Override
@ -272,7 +288,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
protected void onDisabled() {
inputBuffer = null;
outputBuffer = null;
format = null;
inputFormat = null;
audioSessionId = AudioTrack.SESSION_ID_NOT_SET;
try {
if (decoder != null) {
@ -289,9 +305,7 @@ public abstract class AudioDecoderTrackRenderer extends TrackRenderer implements
private boolean readFormat() {
int result = readSource(formatHolder, null);
if (result == TrackStream.FORMAT_READ) {
format = formatHolder.format;
audioTrack.configure(MimeTypes.AUDIO_RAW, format.channelCount, format.sampleRate,
C.ENCODING_PCM_16BIT);
inputFormat = formatHolder.format;
return true;
}
return false;