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saMmapLoopback.c怎么修改能把采集到的视频帧以图片的形式保存到固定路径,非常着急!!!

Other Parts Discussed in Thread: DM3730

请问,saMmapLoopback.c是DM3730芯片中用于摄像头视频采集的用户层应用程序,怎么样修改能把采集到的视频帧保存成图片,并保存在固定路径,如SD卡上???