CameraConfigurationManager.java 文件源码

/**
   * Reads, one time, values from the camera that are needed by the app.
   */
  void initFromCameraParameters(Camera camera) {
    Camera.Parameters parameters = camera.getParameters();
    WindowManager manager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    Display display = manager.getDefaultDisplay();
    Point theScreenResolution = new Point();
    display.getSize(theScreenResolution);
    screenResolution = theScreenResolution;
    Log.i(TAG, "Screen resolution: " + screenResolution);

  //解决竖屏后图像拉伸问题
    Point screenResolutionForCamera = new Point();   
    screenResolutionForCamera.x = screenResolution.x;   
    screenResolutionForCamera.y = screenResolution.y;   
    // preview size is always something like 480*320, other 320*480
    if (screenResolution.x < screenResolution.y) {  
         screenResolutionForCamera.x = screenResolution.y;  
         screenResolutionForCamera.y = screenResolution.x;
    }
    //TODO check
//    cameraResolution = getCameraResolution(parameters, screenResolutionForCamera);

    cameraResolution = CameraConfigurationUtils.findBestPreviewSizeValue(parameters, screenResolutionForCamera);
    Log.i(TAG, "Camera resolution: " + cameraResolution);
  }