Examples with MediaRecorder android.media.MediaRecorder used on opensource projects

Example 61 with MediaRecorder

use of android.media.MediaRecorder in project SmartCampus by Vegen.

the class EaseVoiceRecorder method startRecording.

/**
 * start recording to the file
 */
public String startRecording(Context appContext) {
    file = null;
    try {
        // from setOutputFile when try to reuse
        if (recorder != null) {
            recorder.release();
            recorder = null;
        }
        recorder = new MediaRecorder();
        recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
        recorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
        recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
        // MONO
        recorder.setAudioChannels(1);
        // 8000Hz
        recorder.setAudioSamplingRate(8000);
        // seems if change this to
        recorder.setAudioEncodingBitRate(64);
        // 128, still got same file
        // size.
        // one easy way is to use temp file
        // file = File.createTempFile(PREFIX + userId, EXTENSION,
        // User.getVoicePath());
        voiceFileName = getVoiceFileName(EMClient.getInstance().getCurrentUser());
        voiceFilePath = PathUtil.getInstance().getVoicePath() + "/" + voiceFileName;
        file = new File(voiceFilePath);
        recorder.setOutputFile(file.getAbsolutePath());
        recorder.prepare();
        isRecording = true;
        recorder.start();
    } catch (IOException e) {
        EMLog.e("voice", "prepare() failed");
    }
    new Thread(new Runnable() {

        @Override
        public void run() {
            try {
                while (isRecording) {
                    android.os.Message msg = new android.os.Message();
                    msg.what = recorder.getMaxAmplitude() * 13 / 0x7FFF;
                    handler.sendMessage(msg);
                    SystemClock.sleep(100);
                }
            } catch (Exception e) {
                // from the crash report website, found one NPE crash from
                // one android 4.0.4 htc phone
                // maybe handler is null for some reason
                EMLog.e("voice", e.toString());
            }
        }
    }).start();
    startTime = new Date().getTime();
    EMLog.d("voice", "start voice recording to file:" + file.getAbsolutePath());
    return file == null ? null : file.getAbsolutePath();
}

Example 62 with MediaRecorder

use of android.media.MediaRecorder in project libstreaming by fyhertz.

the class VideoStream method encodeWithMediaRecorder.

/**
	 * Video encoding is done by a MediaRecorder.
	 */
protected void encodeWithMediaRecorder() throws IOException, ConfNotSupportedException {
    Log.d(TAG, "Video encoded using the MediaRecorder API");
    // We need a local socket to forward data output by the camera to the packetizer
    createSockets();
    // Reopens the camera if needed
    destroyCamera();
    createCamera();
    // The camera must be unlocked before the MediaRecorder can use it
    unlockCamera();
    try {
        mMediaRecorder = new MediaRecorder();
        mMediaRecorder.setCamera(mCamera);
        mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
        mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
        mMediaRecorder.setVideoEncoder(mVideoEncoder);
        mMediaRecorder.setPreviewDisplay(mSurfaceView.getHolder().getSurface());
        mMediaRecorder.setVideoSize(mRequestedQuality.resX, mRequestedQuality.resY);
        mMediaRecorder.setVideoFrameRate(mRequestedQuality.framerate);
        // The bandwidth actually consumed is often above what was requested 
        mMediaRecorder.setVideoEncodingBitRate((int) (mRequestedQuality.bitrate * 0.8));
        // We write the output of the camera in a local socket instead of a file !			
        // This one little trick makes streaming feasible quiet simply: data from the camera
        // can then be manipulated at the other end of the socket
        FileDescriptor fd = null;
        if (sPipeApi == PIPE_API_PFD) {
            fd = mParcelWrite.getFileDescriptor();
        } else {
            fd = mSender.getFileDescriptor();
        }
        mMediaRecorder.setOutputFile(fd);
        mMediaRecorder.prepare();
        mMediaRecorder.start();
    } catch (Exception e) {
        throw new ConfNotSupportedException(e.getMessage());
    }
    InputStream is = null;
    if (sPipeApi == PIPE_API_PFD) {
        is = new ParcelFileDescriptor.AutoCloseInputStream(mParcelRead);
    } else {
        is = mReceiver.getInputStream();
    }
    // This will skip the MPEG4 header if this step fails we can't stream anything :(
    try {
        byte[] buffer = new byte[4];
        // Skip all atoms preceding mdat atom
        while (!Thread.interrupted()) {
            while (is.read() != 'm') ;
            is.read(buffer, 0, 3);
            if (buffer[0] == 'd' && buffer[1] == 'a' && buffer[2] == 't')
                break;
        }
    } catch (IOException e) {
        Log.e(TAG, "Couldn't skip mp4 header :/");
        stop();
        throw e;
    }
    // The packetizer encapsulates the bit stream in an RTP stream and send it over the network
    mPacketizer.setInputStream(is);
    mPacketizer.start();
    mStreaming = true;
}

Example 63 with MediaRecorder

use of android.media.MediaRecorder in project KJFrameForAndroid by kymjs.

the class RecordButtonUtil method initRecorder.

// 初始化 录音器
private void initRecorder() {
    mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.AMR_NB);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    mRecorder.setOutputFile(mAudioPath);
    mIsRecording = true;
}

Example 64 with MediaRecorder

use of android.media.MediaRecorder in project coursera-android by aporter.

the class AudioRecordingActivity method startRecording.

// Start recording with MediaRecorder
private void startRecording() {
    mRecorder = new MediaRecorder();
    mRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
    mRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    mRecorder.setOutputFile(mFileName);
    mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
    try {
        mRecorder.prepare();
    } catch (IOException e) {
        Log.e(TAG, "Couldn't prepare and start MediaRecorder");
    }
    mRecorder.start();
}

Example 65 with MediaRecorder

use of android.media.MediaRecorder in project CameraKit-Android by flurgle.

the class Camera1 method initMediaRecorder.

private void initMediaRecorder() {
    mMediaRecorder = new MediaRecorder();
    mCamera.unlock();
    mMediaRecorder.setCamera(mCamera);
    mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    mMediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_480P));
    mVideoFile = new File(mPreview.getView().getContext().getExternalFilesDir(null), "video.mp4");
    mMediaRecorder.setOutputFile(mVideoFile.getAbsolutePath());
    mMediaRecorder.setMaxDuration(20000);
    mMediaRecorder.setMaxFileSize(5000000);
    mMediaRecorder.setOrientationHint(mCameraInfo.orientation);
}