s->decorrelation = get_bits(&gb, 2);
s->downsampling = get_bits(&gb, 2);
+ if (!s->downsampling) {
+ av_log(avctx, AV_LOG_ERROR, "invalid downsampling value\n");
+ return AVERROR_INVALIDDATA;
+ }
+
s->num_taps = (get_bits(&gb, 5)+1)<<5;
if (get_bits1(&gb)) // XXX FIXME
av_log(avctx, AV_LOG_INFO, "Custom quant table\n");