初始化MediaRecorder

 private boolean initializeVideo() {
        Log.v(TAG, "initializeVideo");
        
        if (mSurfaceHolder == null) {
            Log.v(TAG, "SurfaceHolder is null");
            return false;
        }

        mMediaRecorderRecording = true;

        if (mMediaRecorder == null)
                mMediaRecorder = new MediaRecorder();
        else
                mMediaRecorder.reset();
        if (mCamera != null) {
                if (Integer.parseInt(Build.VERSION.SDK) >= 8)
                        VideoCameraNew2.reconnect(mCamera);
                mCamera.release();
                mCamera = null;
        }

        if (useFront && Integer.parseInt(Build.VERSION.SDK) >= 5) {
                        if (isAvailableSprintFFC)
                        {
                                try
                                {
                                        Method method = Class.forName("android.hardware.HtcFrontFacingCamera").getDeclaredMethod("getCamera", null);
                                        mCamera = (Camera) method.invoke(null, null);
                                }
                                catch (Exception ex)
                                {
                                        Log.d(TAG, ex.toString());
                                }
                        } else {
                                mCamera = Camera.open(); 
                                Camera.Parameters parameters = mCamera.getParameters(); 
                                parameters.set("camera-id", 2); 
                                mCamera.setParameters(parameters); 
                        }
                        VideoCameraNew.unlock(mCamera);
                        mMediaRecorder.setCamera(mCamera);
                mVideoPreview.setOnClickListener(this);
        }
        mVideoPreview.setOnLongClickListener(this);
        mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mMediaRecorder.setOutputFile(sender.getFileDescriptor());

                mMediaRecorder.setVideoFrameRate(20);
        if (videoQualityHigh) {
            mMediaRecorder.setVideoSize(352,288);
        } else {
            mMediaRecorder.setVideoSize(176,144);
        }
        mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H263);
        mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());

        try {
            mMediaRecorder.prepare();
            mMediaRecorder.setOnErrorListener(this);
            mMediaRecorder.start();
        } catch (IOException exception) {
            releaseMediaRecorder();
            finish();
            return false;
        }
        return true;
    }

 

private void releaseMediaRecorder() {
        Log.v(TAG, "Releasing media recorder.");
        if (mMediaRecorder != null) {
            mMediaRecorder.reset();
            if (mCamera != null) {
                        if (Integer.parseInt(Build.VERSION.SDK) >= 8)
                                VideoCameraNew2.reconnect(mCamera);
                        mCamera.release();
                        mCamera = null;
            }
            mMediaRecorder.release();
            mMediaRecorder = null;
        }
    }
        
    public void onError(MediaRecorder mr, int what, int extra) {
        if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) {
            finish();
        }
    }

 

 private void stopVideoRecording() {
        Log.v(TAG, "stopVideoRecording");
        if (mMediaRecorderRecording || mMediaRecorder != null) {
                Receiver.listener_video = null;
                t.interrupt();
            RtpStreamSender.delay = 0;

            if (mMediaRecorderRecording && mMediaRecorder != null) {
                try {
                    mMediaRecorder.setOnErrorListener(null);
                    mMediaRecorder.setOnInfoListener(null);
                    mMediaRecorder.stop();
                } catch (RuntimeException e) {
                    Log.e(TAG, "stop fail: " + e.getMessage());
                }

                mMediaRecorderRecording = false;
            }
            releaseMediaRecorder();
        }
    }

 

评论

2 楼 diyangxia 2014-04-16  

如果刚recorder的时候就发生了onErrorlistener()，该怎么处理呢

1 楼 shaobin0604 2011-09-26  

貌似是 Sipdroid 里发送视频的代码，很经典！