android 使用javacv进行录像[模仿vine]

http://blog.csdn.net/wodong/article/details/20772045

相关代码如下：

1. 初始化 ffmpeg_recorder

[java] view plaincopy

1. public void initRecorder() {  
2.     String ffmpeg_link = parentPath + "/" + "video.mp4";  
3.     Log.w(LOG_TAG, "init recorder");  
4.   
5.     if (yuvIplimage == null) {  
6.         yuvIplimage = IplImage.create(cameraManager.getDefaultSize().width,  
7.                 cameraManager.getDefaultSize().height, IPL_DEPTH_8U, 2);  
8.         Log.i(LOG_TAG, "create yuvIplimage");  
9.     }  
10.   
11.     Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);  
12.     recorder = new FFmpegFrameRecorder(ffmpeg_link,  
13.             cameraManager.getDefaultSize().width,  
14.             cameraManager.getDefaultSize().height, 1);  
15.     recorder.setFormat("mp4");  
16.     recorder.setSampleRate(sampleAudioRateInHz);  
17.     // Set in the surface changed method  
18.     recorder.setFrameRate(frameRate);  
19.   
20.     Log.i(LOG_TAG, "recorder initialize success");  
21.   
22.     audioRecordRunnable = new AudioRecordRunnable();  
23.     audioThread = new Thread(audioRecordRunnable);  
24.     try {  
25.         recorder.start();  
26.     } catch (Exception e) {  
27.         // TODO Auto-generated catch block  
28.         e.printStackTrace();  
29.     }  
30.     audioThread.start();  
31. }  

2. 捕捉摄像头视频数据：

[java] view plaincopy

1. public void onPreviewFrame(byte[] data, Camera camera) {  
2.     int during = checkIfMax(new Date().getTime());  
3.     /* get video data */  
4.     if (yuvIplimage != null && isStart) {  
5.         yuvIplimage.getByteBuffer().put(data);  
6.         //yuvIplimage = rotateImage(yuvIplimage.asCvMat(), 90).asIplImage();  
7.         Log.v(LOG_TAG, "Writing Frame");  
8.         try {  
9.             System.out.println(System.currentTimeMillis() - videoStartTime);  
10.             if (during < 6000) {  
11.                 recorder.setTimestamp(1000 * during);  
12.                 recorder.record(yuvIplimage);  
13.             }  
14.         } catch (FFmpegFrameRecorder.Exception e) {  
15.             Log.v(LOG_TAG, e.getMessage());  
16.             e.printStackTrace();  
17.         }  
18.     }  
19. }  

3. 捕捉声音数据：

[java] view plaincopy

1. class AudioRecordRunnable implements Runnable {  
2.   
3.     @Override  
4.     public void run() {  
5.         android.os.Process  
6.                 .setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);  
7.   
8.         // Audio  
9.         int bufferSize;  
10.         short[] audioData;  
11.         int bufferReadResult;  
12.   
13.         bufferSize = AudioRecord.getMinBufferSize(sampleAudioRateInHz,  
14.                 AudioFormat.CHANNEL_CONFIGURATION_MONO,  
15.                 AudioFormat.ENCODING_PCM_16BIT);  
16.         audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC,  
17.                 sampleAudioRateInHz,  
18.                 AudioFormat.CHANNEL_CONFIGURATION_MONO,  
19.                 AudioFormat.ENCODING_PCM_16BIT, bufferSize);  
20.   
21.         audioData = new short[bufferSize];  
22.   
23.         Log.d(LOG_TAG, "audioRecord.startRecording()");  
24.         audioRecord.startRecording();  
25.   
26.         /* ffmpeg_audio encoding loop */  
27.         while (!isFinished) {  
28.             // Log.v(LOG_TAG,"recording? " + recording);  
29.             bufferReadResult = audioRecord.read(audioData, 0,  
30.                     audioData.length);  
31.             if (bufferReadResult > 0) {  
32.                 // Log.v(LOG_TAG, "bufferReadResult: " + bufferReadResult);  
33.                 // If "recording" isn't true when start this thread, it  
34.                 // never get's set according to this if statement...!!!  
35.                 // Why? Good question...  
36.                 if (isStart) {  
37.                     try {  
38.                         Buffer[] barray = new Buffer[1];  
39.                         barray[0] = ShortBuffer.wrap(audioData, 0,  
40.                                 bufferReadResult);  
41.                         recorder.record(barray);  
42.                         // Log.v(LOG_TAG,"recording " + 1024*i + " to " +  
43.                         // 1024*i+1024);  
44.                     } catch (FFmpegFrameRecorder.Exception e) {  
45.                         Log.v(LOG_TAG, e.getMessage());  
46.                         e.printStackTrace();  
47.                     }  
48.                 }  
49.             }  
50.         }  
51.         Log.v(LOG_TAG, "AudioThread Finished, release audioRecord");  
52.   
53.         /* encoding finish, release recorder */  
54.         if (audioRecord != null) {  
55.             audioRecord.stop();  
56.             audioRecord.release();  
57.             audioRecord = null;  
58.             Log.v(LOG_TAG, "audioRecord released");  
59.         }  
60.     }  
61. }  

源码：

http://download.csdn.net/detail/wodong/7008905

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