On Tue, Apr 21, 2015 at 05:25:37PM -0300, Pedro Arthur wrote: > New patch with changes. > > 2015-04-21 13:14 GMT-03:00 Pedro Arthur <bygran...@gmail.com>: > > > I intended to fetch the correct gamma value from the video/image metada > > or pass it by flag (like gamma=x) but yet I don't know how to get the > > correct gamma based on the input, thus for now it is hardcode. > > > > 2015-04-21 12:31 GMT-03:00 Kevin Wheatley <kevin.j.wheat...@gmail.com>: > > > > Pedro > >> > >> I understand the desire to 'degamma' images prior to scaling, I'd be > >> interested in understanding how this could work with the colour_trc > >> options rather than only assuming a simple gamma. > >> > >> Kevin > >> _______________________________________________ > >> ffmpeg-devel mailing list > >> ffmpeg-devel@ffmpeg.org > >> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel > >> > > > >
> options.c | 3 ++ > swscale.c | 51 +++++++++++++++++++++++++++++++++++ > swscale.h | 1 > swscale_internal.h | 9 +++++- > utils.c | 76 > +++++++++++++++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 139 insertions(+), 1 deletion(-) > 2d3c2ec7671d700454621fedf30f2ddc40d8a33c > 0001-Add-gamma-encodign-decoding-before-after-scaling-in-.patch > From aff2c1c0f73e867f2aed90aa01cf3e0a1ba95261 Mon Sep 17 00:00:00 2001 > From: Pedro Arthur <bygran...@gmail.com> > Date: Fri, 17 Apr 2015 17:08:42 -0300 > Subject: [PATCH] Add gamma encodign/decoding before/after scaling in > libswscale > > --- > libswscale/options.c | 3 ++ > libswscale/swscale.c | 51 +++++++++++++++++++++++++++++ > libswscale/swscale.h | 1 + > libswscale/swscale_internal.h | 9 ++++- > libswscale/utils.c | 76 > +++++++++++++++++++++++++++++++++++++++++++ > 5 files changed, 139 insertions(+), 1 deletion(-) applied (as time is a bit short before the deadline and the patch is basically fine, remaining are just nitpicks) replaced SWS_GAMMA_CORRECT by a internal varible Feel free to submit any follow up improvments on top of this Thanks [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB When you are offended at any man's fault, turn to yourself and study your own failings. Then you will forget your anger. -- Epictetus
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