libavfilter: add transpose_vaapi filter

Multimedia / FFmpeg - Zachary Zhou [intel.com] - 23 January 2019 23:29 EST

Swap width and height when do clock/cclock rotation Add reversal/hflip/vflip options

ffmpeg -hwaccel vaapi -vaapi_device /dev/dri/renderD128-hwaccel_output_format vaapi -i input.264 -vf "transpose_vaapi=clock_flip"-c:v h264_vaapi output.h264

b8ebce4f84 libavfilter: add transpose_vaapi filter
configure | 2 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/transpose.h | 3 +
libavfilter/vf_transpose_vaapi.c | 319 +++++++++++++++++++++++++++++++++++++++
5 files changed, 326 insertions(+)

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