/* load up the VQA parameters from the header */
vqa_header = (unsigned char *)s->avctx->extradata;
s->vqa_version = vqa_header[0];
+ if (s->vqa_version < 1 || s->vqa_version > 3) {
+ av_log(s->avctx, AV_LOG_ERROR, " VQA video: unsupported version %d\n", s->vqa_version);
+ return -1;
+ }
s->width = AV_RL16(&vqa_header[6]);
s->height = AV_RL16(&vqa_header[8]);
if(av_image_check_size(s->width, s->height, 0, avctx)){
src_index += 2;
av_dlog(NULL, "(1) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
+ if (src_pos + count > dest_size)
+ return;
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[src_pos + i];
dest_index += count;
src_index += 2;
av_dlog(NULL, "(3) copy %X bytes from absolute pos %X\n", count, src_pos);
CHECK_COUNT();
+ if (src_pos + count > dest_size)
+ return;
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[src_pos + i];
dest_index += count;
src_index += 2;
av_dlog(NULL, "(5) copy %X bytes from relpos %X\n", count, src_pos);
CHECK_COUNT();
+ if (dest_index < src_pos)
+ return;
for (i = 0; i < count; i++)
dest[dest_index + i] = dest[dest_index - src_pos + i];
dest_index += count;