Android中抓取手机视频流数据。

目前实时抓取手机视频数据有2种方法，一种是通过camera的回调获取源数据，这里获取的源数据是没有编码的数据。

有的人发送yuv数据然后在那绘制图片，也说视频聊天，真是可笑。这种方式是可是实现视频聊天的，但是需要移植编码库

目前可移植的有，android的opencore编码，参考http://www.shouyanwang.org/thread-184-1-1.html。

ffmpeg编码，这个网上很难找，但是也有人实现哦。（编码效率好，但是支持不了高清视频）

编码完成可以通过rtp协议发送。就可以视频啦。rtp协议什么的就不说了哦。

以上方法的代码，在这个链接最好回复我贴了代码，不是完整的。链接：http://www.eoeandroid.com/thread-51460-1-1.html

第2种方法，也就是我用的方法。

通过MediaRecorder录制。然后绑定一个localsocket，可以获取编码后的视频数据传输；

代码如下：

package com.pei;import java.io.DataInputStream;import java.io.IOException;import java.io.InputStream;import android.app.Activity;import android.os.Bundle;import android.graphics.PixelFormat;import android.media.MediaRecorder;import android.net.LocalServerSocket;import android.net.LocalSocket;import android.net.LocalSocketAddress;import android.view.SurfaceHolder;import android.view.SurfaceView;import android.view.View;import android.view.Window;import android.view.WindowManager;/** * class name：VideoCameraActivity<BR> * class description：CATCH THE VIDEODATA SEND TO RED5<BR> * PS： <BR> *  * @version 1.00 2011/11/05 * @author CODYY)peijiangping */public class VideoCameraActivity extends Activity implementsSurfaceHolder.Callback, MediaRecorder.OnErrorListener,MediaRecorder.OnInfoListener {private static final int mVideoEncoder = MediaRecorder.VideoEncoder.H264;private LocalSocket receiver, sender;private LocalServerSocket lss;private MediaRecorder mMediaRecorder = null;private boolean mMediaRecorderRecording = false;private SurfaceView mSurfaceView = null;private SurfaceHolder mSurfaceHolder = null;private Thread t;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);getWindow().setFormat(PixelFormat.TRANSLUCENT);requestWindowFeature(Window.FEATURE_NO_TITLE);getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,WindowManager.LayoutParams.FLAG_FULLSCREEN);setContentView(R.layout.main);mSurfaceView = (SurfaceView) this.findViewById(R.id.surface_camera);SurfaceHolder holder = mSurfaceView.getHolder();holder.addCallback(this);holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);mSurfaceView.setVisibility(View.VISIBLE);receiver = new LocalSocket();try {lss = new LocalServerSocket("VideoCamera");receiver.connect(new LocalSocketAddress("VideoCamera"));receiver.setReceiveBufferSize(500000);receiver.setSendBufferSize(500000);sender = lss.accept();sender.setReceiveBufferSize(500000);sender.setSendBufferSize(500000);} catch (IOException e) {finish();return;}}@Overridepublic void onPause() {super.onPause();if (mMediaRecorderRecording) {stopVideoRecording();try {lss.close();receiver.close();sender.close();} catch (IOException e) {e.printStackTrace();}}finish();}private void stopVideoRecording() {System.out.println("stopVideoRecording");if (mMediaRecorderRecording || mMediaRecorder != null) {if (t != null)t.interrupt();releaseMediaRecorder();}}private void startVideoRecording() {(t = new Thread() {public void run() {int frame_size = 20000;byte[] buffer = new byte[1024 * 64];int num, number = 0;InputStream fis = null;try {fis = receiver.getInputStream();} catch (IOException e1) {return;}number = 0;releaseMediaRecorder();while (true) {System.out.println("ok");try {num = fis.read(buffer, number, frame_size);number += num;if (num < frame_size) {System.out.println("recoend break");break;}} catch (IOException e) {System.out.println("exception break");break;}}initializeVideo();number = 0;Consumer consumer = new Publisher();// Publisher继承了ConsumerThread consumerThread = new Thread((Runnable) consumer);consumer.setRecording(true);// 设置线程状态;consumerThread.start();// 开始发布数据流DataInputStream dis = new DataInputStream(fis);try {dis.read(buffer, 0, 32);} catch (IOException e1) {e1.printStackTrace();}byte[] aa = { 0x01, 0x42, (byte) 0x80, 0x0A, (byte) 0xFF,(byte) 0xE1, 0x00, 0x12, 0x67, 0x42, (byte) 0x80, 0x0A,(byte) 0xE9, 0x02, (byte) 0xC1, 0x29, 0x08, 0x00, 0x00,0x1F, 0x40, 0x00, 0x04, (byte) 0xE2, 0x00, 0x20, 0x01,0x00, 0x04, 0x68, (byte) 0xCE, 0x3C, (byte) 0x80 };consumer.putData(System.currentTimeMillis(), aa, 33);while (true) {try {int h264length = dis.readInt();number = 0;while (number < h264length) {int lost = h264length - number;num = fis.read(buffer, 0,frame_size < lost ? frame_size : lost);number += num;consumer.putData(System.currentTimeMillis(),buffer, num);}} catch (IOException e) {break;}}consumer.setRecording(false);// 设置线程状态;}}).start();}private boolean initializeVideo() {System.out.println("initializeVideo");if (mSurfaceHolder == null)return false;mMediaRecorderRecording = true;if (mMediaRecorder == null)mMediaRecorder = new MediaRecorder();elsemMediaRecorder.reset();mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);mMediaRecorder.setVideoFrameRate(20);mMediaRecorder.setVideoSize(352, 288);mMediaRecorder.setVideoEncoder(mVideoEncoder);mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());mMediaRecorder.setMaxDuration(0);mMediaRecorder.setMaxFileSize(0);mMediaRecorder.setOutputFile(sender.getFileDescriptor());try {mMediaRecorder.setOnInfoListener(this);mMediaRecorder.setOnErrorListener(this);mMediaRecorder.prepare();mMediaRecorder.start();} catch (IOException exception) {releaseMediaRecorder();finish();return false;}return true;}private void releaseMediaRecorder() {System.out.println("Releasing media recorder.");if (mMediaRecorder != null) {if (mMediaRecorderRecording) {try {mMediaRecorder.setOnErrorListener(null);mMediaRecorder.setOnInfoListener(null);mMediaRecorder.stop();} catch (RuntimeException e) {System.out.println("stop fail: " + e.getMessage());}mMediaRecorderRecording = false;}mMediaRecorder.reset();mMediaRecorder.release();mMediaRecorder = null;}}@Overridepublic void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {System.out.println("surfaceChanged");mSurfaceHolder = holder;if (!mMediaRecorderRecording) {initializeVideo();startVideoRecording();}}@Overridepublic void surfaceCreated(SurfaceHolder holder) {System.out.println("surfaceCreated");mSurfaceHolder = holder;}@Overridepublic void surfaceDestroyed(SurfaceHolder holder) {System.out.println("surfaceDestroyed");mSurfaceView = null;mSurfaceHolder = null;mMediaRecorder = null;if (t != null) {t.interrupt();}}@Overridepublic void onInfo(MediaRecorder mr, int what, int extra) {switch (what) {case MediaRecorder.MEDIA_RECORDER_INFO_UNKNOWN:System.out.println("MEDIA_RECORDER_INFO_UNKNOWN");break;

case MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED:System.out.println("MEDIA_RECORDER_INFO_MAX_DURATION_REACHED");break;case MediaRecorder.MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED:System.out.println("MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED");break;}}@Overridepublic void onError(MediaRecorder mr, int what, int extra) {if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) {System.out.println("MEDIA_RECORDER_ERROR_UNKNOWN");finish();}}}