swscale: Fix PAL8 input with alpha

Fixes Ticket2158 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
12 years ago · 034b31df2c
parent ee97982408
commit 034b31df2c
1 changed files with 2 additions and 0 deletions
--- a/libswscale/swscale_internal.h
+++ b/libswscale/swscale_internal.h
@ -742,6 +742,8 @@ static av_always_inline int isALPHA(enum AVPixelFormat pix_fmt)
 {
    const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(pix_fmt);
    av_assert0(desc);
+    if (pix_fmt == AV_PIX_FMT_PAL8)
+        return 1;
    return desc->flags & AV_PIX_FMT_FLAG_ALPHA;
 }