Beispiel #1
0
  /** Video encoding is done by a MediaCodec. But here we will use the buffer-to-surface method */
  @SuppressLint({"InlinedApi", "NewApi"})
  protected void encodeWithMediaCodecMethod2() throws RuntimeException, IOException {

    Log.d(TAG, "Video encoded using the MediaCodec API with a surface");

    // Updates the parameters of the camera if needed
    createCamera();
    updateCamera();

    // Estimates the framerate of the camera
    measureFramerate();

    EncoderDebugger debugger = EncoderDebugger.debug(mSettings, mQuality.resX, mQuality.resY);

    mMediaCodec = MediaCodec.createByCodecName(debugger.getEncoderName());
    MediaFormat mediaFormat =
        MediaFormat.createVideoFormat("video/avc", mQuality.resX, mQuality.resY);
    mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, mQuality.bitrate);
    mediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, mQuality.framerate);
    mediaFormat.setInteger(
        MediaFormat.KEY_COLOR_FORMAT, MediaCodecInfo.CodecCapabilities.COLOR_FormatSurface);
    mediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
    mMediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    Surface surface = mMediaCodec.createInputSurface();
    ((SurfaceView) mSurfaceView).addMediaCodecSurface(surface);
    mMediaCodec.start();

    mStreaming = true;
  }
Beispiel #2
0
  /** Video encoding is done by a MediaCodec. */
  @SuppressLint("NewApi")
  protected void encodeWithMediaCodecMethod1() throws RuntimeException, IOException {

    Log.d(TAG, "Video encoded using the MediaCodec API with a buffer");

    // Updates the parameters of the camera if needed
    createCamera();
    updateCamera();

    // Estimates the framerate of the camera
    measureFramerate();

    // Starts the preview if needed
    if (!mPreviewStarted) {
      try {
        mCamera.startPreview();
        mPreviewStarted = true;
      } catch (RuntimeException e) {
        destroyCamera();
        throw e;
      }
    }

    EncoderDebugger debugger = EncoderDebugger.debug(mSettings, mQuality.resX, mQuality.resY);
    final NV21Convertor convertor = debugger.getNV21Convertor();

    mMediaCodec = MediaCodec.createByCodecName(debugger.getEncoderName());
    MediaFormat mediaFormat =
        MediaFormat.createVideoFormat("video/avc", mQuality.resX, mQuality.resY);
    mediaFormat.setInteger(MediaFormat.KEY_BIT_RATE, mQuality.bitrate);
    mediaFormat.setInteger(MediaFormat.KEY_FRAME_RATE, mQuality.framerate);
    mediaFormat.setInteger(MediaFormat.KEY_COLOR_FORMAT, debugger.getEncoderColorFormat());
    mediaFormat.setInteger(MediaFormat.KEY_I_FRAME_INTERVAL, 1);
    mMediaCodec.configure(mediaFormat, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
    mMediaCodec.start();

    Camera.PreviewCallback callback =
        new Camera.PreviewCallback() {
          long now = System.nanoTime() / 1000, oldnow = now, i = 0;
          ByteBuffer[] inputBuffers = mMediaCodec.getInputBuffers();

          @Override
          public void onPreviewFrame(byte[] data, Camera camera) {
            oldnow = now;
            now = System.nanoTime() / 1000;
            if (i++ > 3) {
              i = 0;
              // Log.d(TAG,"Measured: "+1000000L/(now-oldnow)+" fps.");
            }
            try {
              int bufferIndex = mMediaCodec.dequeueInputBuffer(500000);
              if (bufferIndex >= 0) {
                inputBuffers[bufferIndex].clear();
                if (data == null)
                  Log.e(TAG, "Symptom of the \"Callback buffer was to small\" problem...");
                else convertor.convert(data, inputBuffers[bufferIndex]);
                mMediaCodec.queueInputBuffer(
                    bufferIndex, 0, inputBuffers[bufferIndex].position(), now, 0);
              } else {
                Log.e(TAG, "No buffer available !");
              }
            } finally {
              mCamera.addCallbackBuffer(data);
            }
          }
        };

    for (int i = 0; i < 10; i++) mCamera.addCallbackBuffer(new byte[convertor.getBufferSize()]);
    mCamera.setPreviewCallbackWithBuffer(callback);

    mStreaming = true;
  }