avcodec/jpeglsdec: Set alpha plane in PAL8 so image is not 100% transparent

Fixes: tickets/3933/128.jls Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
4 years ago · 011006874c
parent c83f60d7d7
commit 011006874c
1 changed files with 1 additions and 1 deletions
--- a/libavcodec/jpeglsdec.c
+++ b/libavcodec/jpeglsdec.c
@ -124,7 +124,7 @@ int ff_jpegls_decode_lse(MJpegDecodeContext *s)

            for (i=s->palette_index; i<=maxtab; i++) {
                uint8_t k = i << shift;
-                pal[k] = 0;
+                pal[k] = wt < 4 ? 0xFF000000 : 0;
                for (j=0; j<wt; j++) {
                    pal[k] |= get_bits(&s->gb, 8) << (8*(wt-j-1));
                }