diff options
| -rw-r--r-- | libavcodec/videodsp_template.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/libavcodec/videodsp_template.c b/libavcodec/videodsp_template.c index 94c1b7188d..55123a5844 100644 --- a/libavcodec/videodsp_template.c +++ b/libavcodec/videodsp_template.c @@ -44,7 +44,8 @@ void FUNC(ff_emulated_edge_mc)(uint8_t *buf, const uint8_t *src, src_y = 1 - block_h; } if (src_x >= w) { - src += (w - 1 - src_x) * sizeof(pixel); + // The subtracted expression has an unsigned type and must thus not be negative + src -= (1 + src_x - w) * sizeof(pixel); src_x = w - 1; } else if (src_x <= -block_w) { src += (1 - block_w - src_x) * sizeof(pixel); |