我的outputBuffer
在我的onOutputBufferAvailable()
回調方法中有問題。每次調用此回調方法時,我使用outputBuffer.hasRemaining
方法檢查outputBuffer
並始終返回false
。MediaCodec outputBuffer始終是空的
codec.setCallback(new MediaCodec.Callback() {
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onInputBufferAvailable(MediaCodec mc, int inputBufferId) {
ByteBuffer inputBuffer = codec.getInputBuffer(inputBufferId);
int rounds = extractor.readSampleData(inputBuffer,0);
if(rounds > 0) {
long currentT = extractor.getSampleTime();
Log.i("CurrentT", String.valueOf(currentT/(1000*1000)));
codec.queueInputBuffer(inputBufferId, 0, rounds, 0, 0);
extractor.advance();
} else {
// EOS
codec.queueInputBuffer(inputBufferId, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
Log.i("EOS","=-1");
}
}
@Override
public void onError(@NonNull MediaCodec mediaCodec, @NonNull MediaCodec.CodecException e) {
Log.i("error", "e");
}
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
@Override
public void onOutputBufferAvailable(MediaCodec mc, int outputBufferId, MediaCodec.BufferInfo info) {
ByteBuffer outputBuffer = codec.getOutputBuffer(outputBufferId);
Log.i("has", String.valueOf(outputBuffer.hasRemaining()));
if (outputBuffer.hasRemaining()) {
b = outputBuffer.get();
Log.i("i", String.valueOf(b));
BAOS.write(b);
outputBuffer.clear();
} else {
array= BAOS.toByteArray();
codec.stop();
codec.release();
}
codec.releaseOutputBuffer(outputBufferId, false);
}
@Override
public void onOutputFormatChanged(MediaCodec mc, MediaFormat format) {
// Subsequent data will conform to new format.
// Can ignore if using getOutputFormat(outputBufferId)
// mOutputFormat = format; // option B
}
});
您的意思是'presentationTimeUs()'獲取實際位置? – Kristopher
不,我的意思是讀取MediaCodec.BufferInfo中的'offset'和'size'字段。然而,'getOutputBuffer()'的文檔似乎並沒有記錄它已經自動設置:「返回的緩衝區的位置和限制被設置爲有效的輸出數據」 – mstorsjo
不知道爲什麼,但我的信息。偏移量「始終是0.」info.size「是4608. – Kristopher