avfilter: add vf_yadif_videotoolbox

deinterlaces CVPixelBuffers, i.e. AV_PIX_FMT_VIDEOTOOLBOX frames

for example, an interlaced mpeg2 video can be decoded by avcodec,
uploaded into a CVPixelBuffer, deinterlaced by Metal, and then
encoded to h264 by VideoToolbox as follows:

    ffmpeg \
           -init_hw_device videotoolbox \
           -i interlaced.ts \
           -vf hwupload,yadif_videotoolbox \
           -c:v h264_videotoolbox \
           -b:v 2000k \
           -c:a copy \
           -y progressive.ts

(note that uploading AVFrame into CVPixelBuffer via hwupload
 requires 504c60660d3194758823ddd45ceddb86e35d806f)

this work is sponsored by Fancy Bits LLC

Reviewed-by: Ridley Combs <rcombs@rcombs.me>
Reviewed-by: Philip Langdale <philipl@overt.org>
Signed-off-by: Aman Karmani <aman@tmm1.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c
index ec57a2c49c..26f1c73505 100644
--- a/libavfilter/allfilters.c
+++ b/libavfilter/allfilters.c
@@ -496,6 +496,7 @@ extern const AVFilter ff_vf_xmedian;
 extern const AVFilter ff_vf_xstack;
 extern const AVFilter ff_vf_yadif;
 extern const AVFilter ff_vf_yadif_cuda;
+extern const AVFilter ff_vf_yadif_videotoolbox;
 extern const AVFilter ff_vf_yaepblur;
 extern const AVFilter ff_vf_zmq;
 extern const AVFilter ff_vf_zoompan;