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楼主 |
发表于 2020-4-23 13:47:20
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关于文档上的说明
/*
* bit definition for mode flag in MppFrame
*/
/* progressive frame */
#define MPP_FRAME_FLAG_FRAME (0x00000000)
/* top field only */
#define MPP_FRAME_FLAG_TOP_FIELD (0x00000001)
/* bottom field only */
#define MPP_FRAME_FLAG_BOT_FIELD (0x00000002)
/* paired field */
#define MPP_FRAME_FLAG_PAIRED_FIELD (MPP_FRAME_FLAG_TOP_FIELD|MPP_FRAME_FLAG_BOT_FIELD)
/* paired field with field order of top first */
#define MPP_FRAME_FLAG_TOP_FIRST (0x00000004)
/* paired field with field order of bottom first */
#define MPP_FRAME_FLAG_BOT_FIRST (0x00000008)
/* paired field with unknown field order (MBAFF) */
#define MPP_FRAME_FLAG_DEINTERLACED (MPP_FRAME_FLAG_TOP_FIRST|MPP_FRAME_FLAG_BOT_FIRST)
#define MPP_FRAME_FLAG_FIELD_ORDER_MASK (0x0000000C)
// for multiview stream
#define MPP_FRAME_FLAG_VIEW_ID_MASK (0x000000f0)
这些标志位具体是什么含义呢?文档没有说清楚,可以解释一下?
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