Since the loop goes down to i = 0 the number of iterations (variable
count) is the original i, not i - 1.
In the case of i originally being 1, this miscalculation resulted in
a division by zero.
This problem was introduced in commit
4b90dcb8493552c17a811c8b1e6538dae4061f9d.
Signed-off-by: Andreas Cadhalpun <andreas.cadhal...@googlemail.com>
---
libavcodec/dvbsubdec.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/libavcodec/dvbsubdec.c b/libavcodec/dvbsubdec.c
index e9f4765..31898ea 100644
--- a/libavcodec/dvbsubdec.c
+++ b/libavcodec/dvbsubdec.c
@@ -810,7 +810,7 @@ static void compute_default_clut(AVSubtitleRect *rect, int
w, int h)
list_inv[ i ] = bestv;
}
- count = i - 1;
+ count = i;
for (i--; i>=0; i--) {
int v = i*255/count;
AV_WN32(rect->data[1] + 4*list_inv[i], RGBA(v/2,v,v/2,v));
--
2.10.2
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
