android 硬體解碼學習

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FileInputStream in = new FileInputStream("/sdcard/sample.ts");String mimeType = "video/avc";MediaCodec decoder = MediaCodec.createDecoderByType(mimeType);MediaFormat format = MediaFormat.createVideoFormat(mimeType, 1920, 1080);byte[] header_sps = { 0, 0, 0, 1, 103, 100, 0, 40, -84, 52, -59, 1, -32, 17, 31, 120, 11, 80, 16, 16, 31, 0, 0, 3, 3, -23, 0, 0, -22, 96, -108 };byte[] header_pps = { 0, 0, 0, 1, 104, -18, 60, -128 };format.setByteBuffer("csd-0", ByteBuffer.wrap(header_sps));format.setByteBuffer("csd-1", ByteBuffer.wrap(header_pps));format.setInteger(MediaFormat.KEY_MAX_INPUT_SIZE, 1920 * 1080);format.setInteger("durationUs", 63446722);decoder.configure(format, surface, null, 0);decoder.start();ByteBuffer[] inputBuffers = decoder.getInputBuffers();ByteBuffer[] outputBuffers = decoder.getOutputBuffers();BufferInfo info = new BufferInfo();boolean isEOS = false;long startMs = System.currentTimeMillis();while (!Thread.interrupted()) {    if (!isEOS) {        int inIndex = decoder.dequeueInputBuffer(1000);        if (inIndex >= 0) {            byte buffer2[] = new byte[18800 * 8 * 8 * 8];            ByteBuffer buffer = inputBuffers[inIndex];            int sampleSize;            sampleSize = in.read(buffer2, 0, 18800 * 4);            buffer.clear();            buffer.put(buffer2, 0, sampleSize);            buffer.clear();            if (sampleSize < 0) {                decoder.queueInputBuffer(inIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);                isEOS = true;            } else {                decoder.queueInputBuffer(inIndex, 0, sampleSize, 0, 0);            }        }    }    int outIndex = decoder.dequeueOutputBuffer(info, 10000);    switch (outIndex) {    case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:        Log.d("DecodeActivity", "INFO_OUTPUT_BUFFERS_CHANGED");        outputBuffers = decoder.getOutputBuffers();        break;    case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:        Log.d("DecodeActivity", "New format " + decoder.getOutputFormat());        break;    case MediaCodec.INFO_TRY_AGAIN_LATER:        Log.d("DecodeActivity", "dequeueOutputBuffer timed out! " + info);        break;    default:        ByteBuffer buffer = outputBuffers[outIndex];        Log.v("DecodeActivity", "We can‘t use this buffer but render it due to the API limit, " + buffer);        while (info.presentationTimeUs / 1000 > System.currentTimeMillis() - startMs) {            try {                sleep(10);            } catch (InterruptedException e) {                e.printStackTrace();                break;            }        }        decoder.releaseOutputBuffer(outIndex, true);        break;    }    if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {        Log.d("DecodeActivity", "OutputBuffer BUFFER_FLAG_END_OF_STREAM");        break;    }}decoder.stop();decoder.release();

android 硬體解碼學習