ons 2023-08-16 klockan 01:20 -0400 skrev Leo Izen: > By default the OpenEXR decoder outputs linear light pixel data by > applying a gamma=1.0 transfer (i.e. a no-op). When it does so, it > should tag the data as linear so color-managed filters or other tools > can work with it correctly. > > Signed-off-by: Leo Izen <leo.i...@gmail.com> > --- > libavcodec/exr.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/libavcodec/exr.c b/libavcodec/exr.c > index fae1d08ab0..518066facf 100644 > --- a/libavcodec/exr.c > +++ b/libavcodec/exr.c > @@ -2088,6 +2088,8 @@ static int decode_frame(AVCodecContext *avctx, > AVFrame *picture, > > if (s->apply_trc_type != AVCOL_TRC_UNSPECIFIED) > avctx->color_trc = s->apply_trc_type; > + else if (s->gamma > 0.9999f && s->gamma < 1.0001f) > + avctx->color_trc = AVCOL_TRC_LINEAR;
I'm going to be difficult here and point out that gamma=0.99991 is not linear. It's probably linear *enough* most of the time, but also 1.0 can be exactly represented by float so an equality check seems appropriate /Tomas _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-devel To unsubscribe, visit link above, or email ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
