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H264MediaCodecEncoder.java
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H264MediaCodecEncoder.java
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package com.poney.ffmpeg.encoder;
import android.media.MediaCodec;
import android.media.MediaCodecInfo;
import android.media.MediaFormat;
import android.media.MediaMuxer;
import android.util.Log;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
*MediaCodec同步模式
*/
public class H264MediaCodecEncoder extends MediaEncoder {
public static final String MIMETYPE_VIDEO_AVC = "video/avc";
public static final int H264_ENCODER = 1;
private static final int TIMEOUT_S = 10000;
private MediaCodec mMediaCodec;
private volatile boolean isRunning = false;
private ArrayBlockingQueue<byte[]> yuv420Queue = new ArrayBlockingQueue<>(10);
private MediaMuxer mMuxer;
private int mTrackIndex;
private boolean mMuxerStarted;
private volatile EncoderCallback mEncoderCallback;
public void setEncoderCallback(EncoderCallback encoderCallback) {
mEncoderCallback = encoderCallback;
}
public H264MediaCodecEncoder(int width, int height) {
MediaFormat mediaFormat = MediaFormat.createVideoFormat(MIMETYPE_VIDEO_AVC, width, height);
mediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatYUV420Flexible);
mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, width * height * 5);
mediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, 30);//FPS
mediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
try {
mMediaCodec = MediaCodec.createEncoderByType(MIMETYPE_VIDEO_AVC);
mMediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
mMediaCodec.start();
} catch (Exception e) {
e.printStackTrace();
}
}
public void setOutputPath(String outputPath) {
// Create a MediaMuxer. We can't add the video track and start() the muxer here,
// because our MediaFormat doesn't have the Magic Goodies. These can only be
// obtained from the encoder after it has started processing data.
//
// We're not actually interested in multiplexing audio. We just want to convert
// the raw H.264 elementary stream we get from MediaCodec into a .mp4 file.
try {
mMuxer = new MediaMuxer(outputPath, MediaMuxer.OutputFormat.MUXER_OUTPUT_MPEG_4);
} catch (IOException ioe) {
throw new RuntimeException("MediaMuxer creation failed", ioe);
}
mTrackIndex = -1;
mMuxerStarted = false;
}
public void putData(byte[] buffer) {
if (yuv420Queue.size() >= 10) {
yuv420Queue.poll();
}
yuv420Queue.add(buffer);
}
public void startEncoder() {
isRunning = true;
ExecutorService executorService = Executors.newSingleThreadExecutor();
executorService.execute(new Runnable() {
@Override
public void run() {
byte[] input = null;
while (isRunning) {
if (yuv420Queue.size() > 0) {
input = yuv420Queue.poll();
}
if (input != null) {
try {
int inputBufferIndex = mMediaCodec.dequeueInputBuffer(TIMEOUT_S);
if (inputBufferIndex >= 0) {
ByteBuffer inputBuffer = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
inputBuffer = mMediaCodec.getInputBuffer(inputBufferIndex);
} else {
inputBuffer = mMediaCodec.getInputBuffers()[inputBufferIndex];
}
inputBuffer.clear();
inputBuffer.put(input);
mMediaCodec.queueInputBuffer(inputBufferIndex, 0, input.length, getPTSUs(), 0);
}
MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
int outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, TIMEOUT_S);
if (outputBufferIndex == MediaCodec.INFO_OUTPUT_FORMAT_CHANGED) {
MediaFormat newFormat = mMediaCodec.getOutputFormat();
if (null != mEncoderCallback) {
mEncoderCallback.outputMediaFormatChanged(H264_ENCODER, newFormat);
}
if (mMuxer != null) {
if (mMuxerStarted) {
throw new RuntimeException("format changed twice");
}
// now that we have the Magic Goodies, start the muxer
mTrackIndex = mMuxer.addTrack(newFormat);
mMuxer.start();
mMuxerStarted = true;
}
}
while (outputBufferIndex >= 0) {
ByteBuffer outputBuffer = null;
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
outputBuffer = mMediaCodec.getOutputBuffer(outputBufferIndex);
} else {
outputBuffer = mMediaCodec.getOutputBuffers()[outputBufferIndex];
}
if (bufferInfo.flags == MediaCodec.BUFFER_FLAG_CODEC_CONFIG) {
bufferInfo.size = 0;
}
if (bufferInfo.size > 0) {
// adjust the ByteBuffer values to match BufferInfo (not needed?)
outputBuffer.position(bufferInfo.offset);
outputBuffer.limit(bufferInfo.offset + bufferInfo.size);
// write encoded data to muxer(need to adjust presentationTimeUs.
bufferInfo.presentationTimeUs = getPTSUs();
if (mEncoderCallback != null) {
//回调
mEncoderCallback.onEncodeOutput(H264_ENCODER, outputBuffer, bufferInfo);
}
prevOutputPTSUs = bufferInfo.presentationTimeUs;
if (mMuxer != null) {
if (!mMuxerStarted) {
throw new RuntimeException("muxer hasn't started");
}
mMuxer.writeSampleData(mTrackIndex, outputBuffer, bufferInfo);
}
}
mMediaCodec.releaseOutputBuffer(outputBufferIndex, false);
bufferInfo = new MediaCodec.BufferInfo();
outputBufferIndex = mMediaCodec.dequeueOutputBuffer(bufferInfo, TIMEOUT_S);
}
} catch (Throwable throwable) {
throwable.printStackTrace();
}
} else {
try {
Thread.sleep(500);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
});
}
public void stopEncoder() {
if (mEncoderCallback != null) {
//回调
mEncoderCallback.onStop(H264_ENCODER);
}
isRunning = false;
try {
mMediaCodec.stop();
mMediaCodec.release();
mMediaCodec = null;
if (mMuxer != null) {
mMuxer.stop();
mMuxer.release();
mMuxer = null;
}
} catch (Exception e) {
e.printStackTrace();
}
}
}