From 5fe648d04a2af3229704b26f114ba87158b9e9d2 Mon Sep 17 00:00:00 2001 From: James Almer Date: Mon, 6 Sep 2021 12:00:51 -0300 Subject: [PATCH] libswscale/swscale: initialize all dst plane pointers in sws_receive_slice() Fixes valgrind warnings about use of uninitialised values. Signed-off-by: James Almer --- libswscale/swscale.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/libswscale/swscale.c b/libswscale/swscale.c index c233818dcf..b9c9647fcb 100644 --- a/libswscale/swscale.c +++ b/libswscale/swscale.c @@ -1160,9 +1160,9 @@ int sws_receive_slice(struct SwsContext *c, unsigned int slice_start, return ret; } - for (int i = 0; i < FF_ARRAY_ELEMS(dst) && c->frame_dst->data[i]; i++) { - dst[i] = c->frame_dst->data[i] + - c->frame_dst->linesize[i] * (slice_start >> c->chrDstVSubSample); + for (int i = 0; i < FF_ARRAY_ELEMS(dst); i++) { + ptrdiff_t offset = c->frame_dst->linesize[i] * (slice_start >> c->chrDstVSubSample); + dst[i] = FF_PTR_ADD(c->frame_dst->data[i], offset); } return scale_internal(c, (const uint8_t * const *)c->frame_src->data,