lavfi: add ProcAmp (color balance) VAAPI video filter

Multimedia / FFmpeg - Jun Zhao [intel.com] - 21 January 2018 22:56 EST

Add ProcAmp(color balance) vaapi video filter, use the option like -vf "procamp_vaapi=b=10:h=120:c=2.8:s=3.7" to set brightness/hue/contrast/saturation.

fcf5eae4bf lavfi: add ProcAmp (color balance) VAAPI video filter.
Changelog | 1 +
configure | 1 +
libavfilter/Makefile | 1 +
libavfilter/allfilters.c | 1 +
libavfilter/vf_procamp_vaapi.c | 281 +++++++++++++++++++++++++++++++++++++++++
5 files changed, 285 insertions(+)

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