}
avio_seek(s->pb, c->vidpos, SEEK_SET);
while(!url_feof(s->pb) && c->frames){
- avio_read(s->pb, buf, 4);
+ if ((ret = avio_read(s->pb, buf, 4)) != 4) {
+ av_log(s, AV_LOG_ERROR, "failed reading chunk type\n");
+ return ret < 0 ? ret : AVERROR_INVALIDDATA;
+ }
switch(AV_RL32(buf)){
case MKTAG('N', 'U', 'L', 'L'):
if(av_new_packet(pkt, 4 + pal_size) < 0)
avio_read(s->pb, pal + 4, 768);
break;
case MKTAG('F', 'R', 'A', 'M'):
- avio_read(s->pb, buf + 4, DXA_EXTRA_SIZE - 4);
+ if ((ret = avio_read(s->pb, buf + 4, DXA_EXTRA_SIZE - 4)) != DXA_EXTRA_SIZE - 4) {
+ av_log(s, AV_LOG_ERROR, "failed reading dxa_extra\n");
+ return ret < 0 ? ret : AVERROR_INVALIDDATA;
+ }
size = AV_RB32(buf + 5);
if(size > 0xFFFFFF){
av_log(s, AV_LOG_ERROR, "Frame size is too big: %d\n", size);