[FFmpeg-trac] #769(swscale:open): png gray8 alpha decodes incorrectly

[FFmpeg]

#769: png gray8 alpha decodes incorrectly
--------------------------------------+-----------------------------------
             Reporter:  ami_stuff     |                    Owner:
                 Type:  defect        |                   Status:  open
             Priority:  normal        |                Component:  swscale
              Version:  git-master    |               Resolution:
             Keywords:  gray8a alpha  |               Blocked By:
             Blocking:                |  Reproduced by developer:  1
Analyzed by developer:  0             |
--------------------------------------+-----------------------------------

Comment (by ami_stuff):

 attached pngs works with this:

 {{{
                 } else if (s->bit_depth == 1) {
                     avctx->pix_fmt = PIX_FMT_MONOBLACK;
                 } else if (s->bit_depth == 8 &&
                            s->color_type == PNG_COLOR_TYPE_GRAY_ALPHA) {
 -                   avctx->pix_fmt = PIX_FMT_GRAY8A;
 +                   avctx->pix_fmt = PIX_FMT_GRAY16BE;
                 } else {
 }}}

-- 
Ticket URL: <https://ffmpeg.org/trac/ffmpeg/ticket/769#comment:9>
FFmpeg <http://ffmpeg.org>
FFmpeg issue tracker