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DM8168 DVRRDK开发包视频编解码器驱动问题

Other Parts Discussed in Thread: TVP7002

各位专家你们好,请问DM8168采用DVRRDK开发包,里面视频编解码器的驱动是基于哪套架构开发的?我看DVRRDK包中的应用例子,感觉不是按照V4L2这套机制来编写的,而且看到DVRRDK开发包中,竟然也自带有一套视频编解码器的驱动,例如TVP7002的DVRRDK_03.00.00.00\DVRRDK_03.00.00.00\ti_tools\hdvpss\hdvpss_01_00_01_37_patched\packages\ti\psp\devices\tvp7002\src文件夹中,就是tvp7002的驱动,但这套驱动不是按照v4l2架构来设计的,好像示例应用也是按照这个驱动提供的接口来设计的。请问这是怎么回事?麻烦你们给我讲解一下,谢谢