Android surfaceView播放视频 如何计算视频的帧率

求助大佬
Android surfaceView播放视频 如何计算视频的帧率

SurfaceHolder surfaceHolder = surfaceView.getHolder();
        surfaceHolder.addCallback(new SurfaceHolder.Callback() {
            @Override
            public void surfaceCreated(SurfaceHolder holder) {
                NativeSetSurface(mStreamId, holder.getSurface()); //播放视频
            }

            @Override
            public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {

            }

            @Override
            public void surfaceDestroyed(SurfaceHolder holder) {
                holder = null;
                surfaceView.destroyDrawingCache();
                NativeSetSurface(mStreamId,null);
            }
        });

https://blog.csdn.net/u013274497/article/details/79041912