How to get raw preview data from Camera object at least 15 frames per second in Android?

Question

I need to obtain raw preview data from Camera object at least 15 frame per second, but I can only get a frame in 110 milliseconds which means I can get only

Answer 1

I usually declare a global boolean lockCameraUse. The the callback function usually looks like this.

  public void onPreviewFrame(byte[] data, Camera camera) {
    if (lockCameraUse) {
      camera.addCallbackBuffer(data);
      return;
    }
    lockCameraUse = true;
    // processinng data

    // done processing data
    camera.addCallbackBuffer(data);
    lockCameraUse = false;
    return;
  }