Commit ebcf3b74 authored by David Conrad's avatar David Conrad
Browse files

Ensure that we don't read from invalid memory with B-frame qpel

Originally committed as revision 18839 to svn://svn.ffmpeg.org/ffmpeg/trunk
parent e1316b19
...@@ -1818,8 +1818,8 @@ static void vc1_interp_mc(VC1Context *v) ...@@ -1818,8 +1818,8 @@ static void vc1_interp_mc(VC1Context *v)
} }
if(v->rangeredfrm if(v->rangeredfrm
|| (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3
|| (unsigned)src_y > s->v_edge_pos - (my&3) - 16){ || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){
uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize;
srcY -= s->mspel * (1 + s->linesize); srcY -= s->mspel * (1 + s->linesize);
......
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