Android 解码MediaCodec 播放H264 265

Eclipse 源码: 
http://download.csdn.net/detail/yulinxx/9732744

package io.vec.demo.mediacodec;

import java.io.IOException;
import java.nio.ByteBuffer;

import android.app.Activity;
import android.media.MediaCodec;
import android.media.MediaCodec.BufferInfo;
import android.media.MediaCodecInfo;
import android.media.MediaExtractor;
import android.media.MediaFormat;
import android.os.Bundle;
import android.os.Environment;
import android.util.Log;
import android.view.Surface;
import android.view.SurfaceHolder;
import android.view.SurfaceView;

public class DecodeActivity extends Activity implements SurfaceHolder.Callback {
// private static final String strVideo =
// Environment.getExternalStorageDirectory() + "/test/xx.avi";
// private static final String strVideo =
// Environment.getExternalStorageDirectory() + "/test/test.wmv";
// private static final String strVideo =
// Environment.getExternalStorageDirectory() +
// "/netease/cloudmusic/Music/Alborada Del Inka - Vientos suaves.mp3";

// private static final String strVideo =
// Environment.getExternalStorageDirectory() +
// "/DCIM/Camera/VID_20161117_175920.mp4";
// private static final String strVideo =
// Environment.getExternalStorageDirectory() + "/test/H264_1080.mp4";
// private static final String strVideo =
// Environment.getExternalStorageDirectory() + "/test/H265_1080.mp4";
private static final String strVideo = Environment.getExternalStorageDirectory() + "/test/H265_1080.mp4";

private String TAG = "DecodeActivity";

private PlayerThread mPlayerThread = null;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
SurfaceView sv = new SurfaceView(this);
sv.getHolder().addCallback(this);
setContentView(sv);
}

protected void onDestroy() {
super.onDestroy();
}

@Override
public void surfaceCreated(SurfaceHolder holder) {
}

@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
if (mPlayerThread == null) {
mPlayerThread = new PlayerThread(holder.getSurface());
mPlayerThread.start();
}
}

@Override
public void surfaceDestroyed(SurfaceHolder holder) {
if (mPlayerThread != null) {
mPlayerThread.interrupt();
}
}

// *****************************************************************
private class PlayerThread extends Thread {
private MediaExtractor mediaExtractor;
/** 用来读取音視频文件 提取器 */
private MediaCodec mediaCodec;
/** 用来解码 解碼器 */
private Surface surface;

public PlayerThread(Surface surface) {
this.surface = surface;
}

@Override
public void run() {
mediaExtractor = new MediaExtractor();
try {
mediaExtractor.setDataSource(strVideo); // 设置数据源
} catch (IOException e1) {
e1.printStackTrace();
}

String mimeType = null;
for (int i = 0; i < mediaExtractor.getTrackCount(); i++) { // 信道总数
MediaFormat format = mediaExtractor.getTrackFormat(i); // 音频文件信息
mimeType = format.getString(MediaFormat.KEY_MIME); // Video/AVC
// H 264
// Video/HEVC
// H265
// video/hevc
if (mimeType.startsWith("video/")) { // 视频信道
mediaExtractor.selectTrack(i); // 切换到视频信道

mediaCodec = MediaCodec.createDecoderByType(mimeType); // 创建解码器,提供数据输出
mediaCodec.configure(format, surface, null, 0);
break;
}

if (mimeType.startsWith("audio/")) { // 音频信道

}
}

if (mediaCodec == null) {
Log.e("DecodeActivity", "Can't find video info!");
return;
}

mediaCodec.start(); // 启动MediaCodec ，等待传入数据

ByteBuffer[] inputBuffers = mediaCodec.getInputBuffers(); // 用来存放目标文件的数据
// 输入
ByteBuffer[] outputBuffers = mediaCodec.getOutputBuffers(); // 解码后的数据
// 输出
BufferInfo info = new BufferInfo(); // 用于描述解码得到的byte[]数据的相关信息
boolean bIsEos = false;
long startMs = System.currentTimeMillis();

// ==========开始解码=============
while (!Thread.interrupted()) {

if (!bIsEos) {
int inIndex = mediaCodec.dequeueInputBuffer(10000);
if (inIndex >= 0) {
ByteBuffer buffer = inputBuffers[inIndex];
int nSampleSize = mediaExtractor.readSampleData(buffer, 0); // 读取一帧数据至buffer中
if (nSampleSize < 0) {
Log.d("DecodeActivity", "InputBuffer BUFFER_FLAG_END_OF_STREAM");
mediaCodec.queueInputBuffer(inIndex, 0, 0, 0, MediaCodec.BUFFER_FLAG_END_OF_STREAM);
bIsEos = true;
} else {
// 填数据
mediaCodec.queueInputBuffer(inIndex, 0, nSampleSize, mediaExtractor.getSampleTime(), 0); // 通知MediaDecode解码刚刚传入的数据
mediaExtractor.advance(); // 继续下一取样
}
}
}

int outIndex = mediaCodec.dequeueOutputBuffer(info, 10000);
switch (outIndex) {
case MediaCodec.INFO_OUTPUT_BUFFERS_CHANGED:
Log.d("DecodeActivity", "INFO_OUTPUT_BUFFERS_CHANGED");
outputBuffers = mediaCodec.getOutputBuffers();
break;
case MediaCodec.INFO_OUTPUT_FORMAT_CHANGED:
Log.d("DecodeActivity", "New format " + mediaCodec.getOutputFormat());
break;
case MediaCodec.INFO_TRY_AGAIN_LATER:
Log.d("DecodeActivity", "dequeueOutputBuffer timed out!");
break;
default:
ByteBuffer buffer = outputBuffers[outIndex];
Log.v("DecodeActivity", "We can't use this buffer but render it due to the API limit, " + buffer);

// We use a very simple clock to keep the video FPS, or the
// video
// playback will be too fast
while (info.presentationTimeUs / 1000 > System.currentTimeMillis() - startMs) {
try {
sleep(10);
} catch (InterruptedException e) {
e.printStackTrace();
break;
}
}
mediaCodec.releaseOutputBuffer(outIndex, true);
break;
}

// All decoded frames have been rendered, we can stop playing
// now
if ((info.flags & MediaCodec.BUFFER_FLAG_END_OF_STREAM) != 0) {
Log.d("DecodeActivity", "OutputBuffer BUFFER_FLAG_END_OF_STREAM");
break;
}
} // end while

mediaCodec.stop();
mediaCodec.release();
mediaExtractor.release();
}
}
}

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