const int index= size2index[log2h][log2w];
const int h= 1<<log2h;
int code= get_vlc2(&f->gb, block_type_vlc[1-f->version][index].table, BLOCK_TYPE_VLC_BITS, 1);
+ uint16_t *start= f->last_picture.data[0];
+ uint16_t *end= start + stride*(f->avctx->height-h+1) - (1<<log2w);
assert(code>=0 && code<=6);
if(code == 0){
src += f->mv[ *f->bytestream++ ];
+ if(start > src || src > end){
+ av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n");
+ return;
+ }
mcdc(dst, src, log2w, h, stride, 1, 0);
}else if(code == 1){
log2h--;
mcdc(dst, src, log2w, h, stride, 1, 0);
}else if(code == 4){
src += f->mv[ *f->bytestream++ ];
+ if(start > src || src > end){
+ av_log(f->avctx, AV_LOG_ERROR, "mv out of pic\n");
+ return;
+ }
mcdc(dst, src, log2w, h, stride, 1, le2me_16(*f->wordstream++));
}else if(code == 5){
mcdc(dst, src, log2w, h, stride, 0, le2me_16(*f->wordstream++));