本文整理汇总了Java中android.media.MediaCodec.dequeueOutputBuffer方法的典型用法代码示例。如果您正苦于以下问题:Java MediaCodec.dequeueOutputBuffer方法的具体用法?Java MediaCodec.dequeueOutputBuffer怎么用?Java MediaCodec.dequeueOutputBuffer使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类android.media.MediaCodec
的用法示例。
在下文中一共展示了MediaCodec.dequeueOutputBuffer方法的3个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: handleCodecOutput
import android.media.MediaCodec; //导入方法依赖的package包/类
private void handleCodecOutput(MediaCodec mediaCodec,
ByteBuffer[] codecOutputBuffers,
MediaCodec.BufferInfo bufferInfo,
OutputStream outputStream)
throws IOException
{
int codecOutputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, 0);
while (codecOutputBufferIndex != MediaCodec.INFO_TRY_AGAIN_LATER) {
if (codecOutputBufferIndex >= 0) {
ByteBuffer encoderOutputBuffer = codecOutputBuffers[codecOutputBufferIndex];
encoderOutputBuffer.position(bufferInfo.offset);
encoderOutputBuffer.limit(bufferInfo.offset + bufferInfo.size);
if ((bufferInfo.flags & MediaCodec.BUFFER_FLAG_CODEC_CONFIG) != MediaCodec.BUFFER_FLAG_CODEC_CONFIG) {
byte[] header = createAdtsHeader(bufferInfo.size - bufferInfo.offset);
outputStream.write(header);
byte[] data = new byte[encoderOutputBuffer.remaining()];
encoderOutputBuffer.get(data);
outputStream.write(data);
}
encoderOutputBuffer.clear();
mediaCodec.releaseOutputBuffer(codecOutputBufferIndex, false);
} else if (codecOutputBufferIndex== MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
codecOutputBuffers = mediaCodec.getOutputBuffers();
}
codecOutputBufferIndex = mediaCodec.dequeueOutputBuffer(bufferInfo, 0);
}
}
示例2: recorderEncoderLoop
import android.media.MediaCodec; //导入方法依赖的package包/类
/**
* Reads bytes from the given recorder and encodes them with the given encoder.
* Uses the (deprecated) Synchronous Processing using Buffer Arrays.
* <p/>
* Encoders (or codecs that generate compressed data) will create and return the codec specific
* data before any valid output buffer in output buffers marked with the codec-config flag.
* Buffers containing codec-specific-data have no meaningful timestamps.
*/
@TargetApi(Build.VERSION_CODES.JELLY_BEAN)
private void recorderEncoderLoop(MediaCodec codec, SpeechRecord speechRecord) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
codec.start();
// Getting some buffers (e.g. 4 of each) to communicate with the codec
ByteBuffer[] codecInputBuffers = codec.getInputBuffers();
ByteBuffer[] codecOutputBuffers = codec.getOutputBuffers();
Log.i("input buffers " + codecInputBuffers.length + "; output buffers: " + codecOutputBuffers.length);
boolean doneSubmittingInput = false;
int numRetriesDequeueOutputBuffer = 0;
int index;
while (true) {
if (!doneSubmittingInput) {
index = codec.dequeueInputBuffer(DEQUEUE_TIMEOUT);
if (index >= 0) {
int size = queueInputBuffer(codec, codecInputBuffers, index, speechRecord);
if (size == -1) {
codec.queueInputBuffer(index, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
Log.i("enc: in: EOS");
doneSubmittingInput = true;
} else {
Log.i("enc: in: " + size);
mNumBytesSubmitted += size;
}
} else {
Log.i("enc: in: timeout, will try again");
}
}
MediaCodec.BufferInfo info = new MediaCodec.BufferInfo();
index = codec.dequeueOutputBuffer(info, DEQUEUE_TIMEOUT);
Log.i("enc: out: flags/index: " + info.flags + "/" + index);
if (index == MediaCodec.INFO_TRY_AGAIN_LATER) {
Log.i("enc: out: INFO_TRY_AGAIN_LATER: " + numRetriesDequeueOutputBuffer);
if (++numRetriesDequeueOutputBuffer > MAX_NUM_RETRIES_DEQUEUE_OUTPUT_BUFFER) {
break;
}
} else if (index == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat format = codec.getOutputFormat();
Log.i("enc: out: INFO_OUTPUT_FORMAT_CHANGED: " + format.toString());
} else if (index == MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED) {
codecOutputBuffers = codec.getOutputBuffers();
Log.i("enc: out: INFO_OUTPUT_BUFFERS_CHANGED");
} else {
dequeueOutputBuffer(codec, codecOutputBuffers, index, info);
mNumBytesDequeued += info.size;
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
Log.i("enc: out: EOS");
break;
}
}
}
codec.stop();
codec.release();
}
}
开发者ID:vaibhavs4424,项目名称:AI-Powered-Intelligent-Banking-Platform,代码行数:64,代码来源:EncodedAudioRecorder.java
示例3: renderHevcImage
import android.media.MediaCodec; //导入方法依赖的package包/类
private static void renderHevcImage(ByteBuffer bitstream, ImageInfo info, Surface surface) {
long beginTime = SystemClock.elapsedRealtimeNanos();
// configure HEVC decoder
MediaCodec decoder = configureDecoder(info, bitstream.limit(), surface);
MediaFormat outputFormat = decoder.getOutputFormat();
Log.d(TAG, "HEVC output-format=" + outputFormat);
decoder.start();
try {
// set bitstream to decoder
int inputBufferId = decoder.dequeueInputBuffer(-1);
if (inputBufferId < 0) {
throw new IllegalStateException("dequeueInputBuffer return " + inputBufferId);
}
ByteBuffer inBuffer = decoder.getInputBuffer(inputBufferId);
inBuffer.put(bitstream);
decoder.queueInputBuffer(inputBufferId, 0, bitstream.limit(), 0, 0);
// notify end of stream
inputBufferId = decoder.dequeueInputBuffer(-1);
if (inputBufferId < 0) {
throw new IllegalStateException("dequeueInputBuffer return " + inputBufferId);
}
decoder.queueInputBuffer(inputBufferId, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
// get decoded image
MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
while (true) {
int outputBufferId = decoder.dequeueOutputBuffer(bufferInfo, -1);
if (outputBufferId >= 0) {
decoder.releaseOutputBuffer(outputBufferId, true);
break;
} else if (outputBufferId == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
outputFormat = decoder.getOutputFormat();
Log.d(TAG, "HEVC output-format=" + outputFormat);
} else {
Log.d(TAG, "HEVC dequeueOutputBuffer return " + outputBufferId);
}
}
decoder.flush();
} finally {
decoder.stop();
decoder.release();
}
long endTime = SystemClock.elapsedRealtimeNanos();
Log.i(TAG, "HEVC decoding elapsed=" + (endTime - beginTime) / 1000000.f + "[msec]");
}