From 0cfcbf217f7db5156da0acfb114a98c135d9ebfd Mon Sep 17 00:00:00 2001 From: David Conrad Date: Sat, 19 Feb 2011 01:41:51 -0800 Subject: Fix VP3 edge emulation With negative stride, the start of the edge_emu buffer should be pointing to the last line, not the end of the buffer. With positive stride, pointing to the end of the buffer was completely wrong. (cherry picked from commit a89f4ca005efa5ee82089583c7b8bc00bcee816a) --- libavcodec/vp3.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/libavcodec/vp3.c b/libavcodec/vp3.c index 97051f7065..3d4bfb4d91 100644 --- a/libavcodec/vp3.c +++ b/libavcodec/vp3.c @@ -1459,8 +1459,7 @@ static void render_slice(Vp3DecodeContext *s, int slice) if(src_x<0 || src_y<0 || src_x + 9 >= plane_width || src_y + 9 >= plane_height){ uint8_t *temp= s->edge_emu_buffer; - if(stride<0) temp -= 9*stride; - else temp += 9*stride; + if(stride<0) temp -= 8*stride; s->dsp.emulated_edge_mc(temp, motion_source, stride, 9, 9, src_x, src_y, plane_width, plane_height); motion_source= temp; -- cgit v1.2.3