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你好,目前使用DM6467,FPGA把视频通过VPIF接口送到6467,发现如果连续发送视频,6467工作正常,但FPGA发一帧视频,6467调用VIDIOC_QBUF无法得到视频帧,FPGA发3帧,6467调用VIDIOC_QBUF才能接受到数据,是不是哪里有缓存计数器,必须3帧才可以,具体在哪里设置这个缓存数量
刚才写错了,是调用VIDIOC_DQBUF