DM8168 dvr 中的Capture问题

你好，

请参考HDVPSS驱动里面的fvid2.h的下面相关内容。

    Ptr                 addr[FVID2_MAX_FIELDS][FVID2_MAX_PLANES];
    /**<
         FVID2 buffer pointers for supporting multiple addresses like
         Y, U, V etc for a given frame. The interpretation of these pointers
         depend on the format configured for the driver.
         The first dimension represents the field and the second dimension
         represents the color plane.
         Not all pointers are valid for a given format.

         Representation of YUV422 Planar Buffer:
         Field 0 Y -> addr[0][0], Field 1 Y -> addr[1][0]
         Field 0 U -> addr[0][1], Field 1 U -> addr[1][1]
         Field 0 V -> addr[0][2], Field 1 V -> addr[1][2]
         Other pointers are not valid.

         Representation of YUV422 Interleaved Buffer:
         Field 0 YUV -> addr[0][0], Field 1 YUV -> addr[1][0]
         Other pointers are not valid.

         Representation of YUV420SP or YUV422SP Buffer:
         Field 0 Y  -> addr[0][0], Field 1 Y  -> addr[1][0]
         Field 0 UV -> addr[0][1], Field 1 UV -> addr[1][1]
         Other pointers are not valid.

         Representation of RGB888 Buffer
         Field 0 RGB -> addr[0][0], Field 1 RGB -> addr[1][0],
         Other pointers are not valid.

         For progressive mode data formats
         or when fields are processed by driver in frame mode.
         addr[1][x] is not used.

         Instead of using numerical for accessing the buffers, the application
         can use the macros defined for each buffer formats like
         FVID2_YUV_INT_ADDR_IDX, FVID2_RGB_ADDR_IDX, FVID2_FID_TOP etc. */