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swscale: check flags instead of nb_components to find if pixel format have alpha
author
Paul B Mahol
<onemda@gmail.com>
Thu, 24 Jan 2013 17:32:37 +0000
(17:32 +0000)
committer
Paul B Mahol
<onemda@gmail.com>
Fri, 25 Jan 2013 13:06:00 +0000
(13:06 +0000)
Signed-off-by: Paul B Mahol <onemda@gmail.com>
libswscale/swscale_internal.h
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diff --git
a/libswscale/swscale_internal.h
b/libswscale/swscale_internal.h
index
d1f9539
..
4f4b953
100644
(file)
--- a/
libswscale/swscale_internal.h
+++ b/
libswscale/swscale_internal.h
@@
-688,7
+688,7
@@
static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
{
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
av_assert0(desc);
- return desc->
nb_components == 2 || desc->nb_components == 4
;
+ return desc->
flags & PIX_FMT_ALPHA
;
}
#if 1