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Add AudioFormat.getBytesPerSample and use it

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Change-Id: I90a40987ea99006af4a6e31136078c04976eb54d
This commit is contained in:
Glenn Kasten
2014-01-09 12:24:48 -08:00
parent 29e594c520
commit 34a37bdebb
6 changed files with 23 additions and 18 deletions
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13
core/java/android/speech/tts/BlockingAudioTrack.java
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@@ -83,7 +83,7 @@ class BlockingAudioTrack {
mVolume = volume;
mPan = pan;
mBytesPerFrame = getBytesPerFrame(mAudioFormat) * mChannelCount;
mBytesPerFrame = AudioFormat.getBytesPerSample(mAudioFormat) * mChannelCount;
mIsShortUtterance = false;
mAudioBufferSize = 0;
mBytesWritten = 0;
@@ -229,17 +229,6 @@ class BlockingAudioTrack {
return audioTrack;
}
private static int getBytesPerFrame(int audioFormat) {
if (audioFormat == AudioFormat.ENCODING_PCM_8BIT) {
return 1;
} else if (audioFormat == AudioFormat.ENCODING_PCM_16BIT) {
return 2;
}
return -1;
}
private void blockUntilDone(AudioTrack audioTrack) {
if (mBytesWritten <= 0) {
return;

3
core/java/android/speech/tts/FileSynthesisCallback.java
View File

@@ -278,8 +278,7 @@ class FileSynthesisCallback extends AbstractSynthesisCallback {
private ByteBuffer makeWavHeader(int sampleRateInHz, int audioFormat, int channelCount,
int dataLength) {
// TODO: is AudioFormat.ENCODING_DEFAULT always the same as ENCODING_PCM_16BIT?
int sampleSizeInBytes = (audioFormat == AudioFormat.ENCODING_PCM_8BIT ? 1 : 2);
int sampleSizeInBytes = AudioFormat.getBytesPerSample(audioFormat);
int byteRate = sampleRateInHz * sampleSizeInBytes * channelCount;
short blockAlign = (short) (sampleSizeInBytes * channelCount);
short bitsPerSample = (short) (sampleSizeInBytes * 8);