vaapi_map_frame 885 libavutil/hwcontext_vaapi.c err = vaapi_map_frame(hwfc, map, src, AV_HWFRAME_MAP_READ); vaapi_map_frame 916 libavutil/hwcontext_vaapi.c err = vaapi_map_frame(hwfc, map, dst, AV_HWFRAME_MAP_WRITE | AV_HWFRAME_MAP_OVERWRITE); vaapi_map_frame 944 libavutil/hwcontext_vaapi.c err = vaapi_map_frame(hwfc, dst, src, flags);