On Fri, Jan 11, 2019 at 03:23:49AM +0100, Carl Eugen Hoyos wrote: > 2019-01-11 2:55 GMT+01:00, Carl Eugen Hoyos <ceffm...@gmail.com>: > > Hi! > > > > Attached patch fixes ticket #6797, please comment. > > New patch with 16bit support attached. > > Please comment, Carl Eugen
> From 5f879539ee7fecd57bd3de9f7c6363d9b7779b5b Mon Sep 17 00:00:00 2001
> From: Carl Eugen Hoyos <ceffm...@gmail.com>
> Date: Fri, 11 Jan 2019 03:20:38 +0100
> Subject: [PATCH] lavc/psd: Support CMYK images.
>
> Based on a05635e by Michael Niedermayer.
>
> Fixes ticket #6797.
> ---
> libavcodec/psd.c | 84
> ++++++++++++++++++++++++++++++++++++++++++++++++++++++
> 1 file changed, 84 insertions(+)
>
> diff --git a/libavcodec/psd.c b/libavcodec/psd.c
> + if (s->channel_depth == 8) {
> + for (y = 0; y < s->height; y++) {
> + for (x = 0; x < s->width; x++) {
> + int k = src[3][x];
> + int r = src[0][x] * k;
> + int g = src[1][x] * k;
> + int b = src[2][x] * k;
> + dst[0][x] = g * 257 >> 16;
> + dst[1][x] = b * 257 >> 16;
> + dst[2][x] = r * 257 >> 16;
> + }
the same algorithm exists in libavcodec/mjpegdec.c, with alpha channel support.
i guess it is trivial enough to be duplicated here.
otherwise looks good.
-- Peter
(A907 E02F A6E5 0CD2 34CD 20D2 6760 79C5 AC40 DD6B)
signature.asc
Description: PGP signature
_______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
