/**
 * 实现输出类型为ImgTexFrame的SrcPin, 以实现Texture图像的输出.
 */
public SrcPin<ImgTexFrame> getImgTexSrcPin();
/**
 * 实现输出类型为ImgBufFrame的SrcPin, 以实现buffer图像数据的输出.
 */
public SrcPin<ImgBufFrame> getImgBufSrcPin();

/**
 * 配置视频采集分辨率.
 */
public void setPreviewSize(int width, int height);
/**
 * 配置采集帧率.
 */
public void setPreviewFps(float fps) {
 mPresetPreviewFps = fps;
}
/**
 * 配置采集预览的方向
 * @param degrees the rotate degrees of current Activity.<br/>
 * Acceptable value: 0, 90, 180, 270,
 * other values will be ignored.<br/>
 * Default value is 0.
 */
public void setOrientation(int degrees);

/**
 * 开始采集, 为异步接口。
 */
public void start();
/**
 * 停止采集, 为同步接口,调用返回后既完全释放Camera实例。
 */
public void stop();
/**
 * 释放其他相关资源
 */
public void release();

/**
 * Get parameters of current camera.<br/>
 * Should be called on state {@link #CAMERA_STATE_PREVIEWING}.
 *
 * @return Camera parameters instance or null on invalid state.
 */
public Camera.Parameters getCameraParameters();
/**
 * Set new parameters to current camera.<br/>
 * Should be called on state {@link #CAMERA_STATE_PREVIEWING}.
 *
 * @param parameters Camera parameters to be set.
 * @return true on success, false otherwise.
 */
public boolean setCameraParameters(Camera.Parameters parameters);
/**
 * Starts camera auto-focus and registers a callback function to run
 * when the camera is focused.<br/>
 * Should be called on state {@link #CAMERA_STATE_PREVIEWING}.
 *
 * @param cb the callback to run
 */
public void autoFocus(Camera.AutoFocusCallback cb);
/**
 * Cancels any auto-focus function in progress.Whether or not auto-focus is currently
 * in progress,this function will return the focus position to the default.
 * If the camera does not support auto-focus, this is a no-op.<br/>
 * Should be called on state {@link #CAMERA_STATE_PREVIEWING}.
 */
public void cancelAutoFocus();