return AVERROR_INVALIDDATA;
}
s->fullrange = get_bits1(&s->gb);
- // for profile 1, here follows the subsampling bits
+
+ // subsampling bits
+ if (s->profile == 1 || s->profile == 3) {
+ s->sub_x = get_bits1(&s->gb);
+ s->sub_y = get_bits1(&s->gb);
+ if (s->sub_x && s->sub_y) {
+ av_log(avctx, AV_LOG_ERROR,
+ "4:2:0 color not supported in profile 1 or 3\n");
+ return AVERROR_INVALIDDATA;
+ }
+ if (get_bits1(&s->gb)) { // reserved bit
+ av_log(avctx, AV_LOG_ERROR, "Reserved bit should be zero\n");
+ return AVERROR_INVALIDDATA;
+ }
+ } else {
+ s->sub_x = s->sub_y = 1;
+ }
+ if (!s->sub_x || !s->sub_y) {
+ avpriv_report_missing_feature(avctx, "Subsampling %d:%d",
+ s->sub_x, s->sub_y);
+ return AVERROR_PATCHWELCOME;
+ }
+
s->refreshrefmask = 0xff;
w = get_bits(&s->gb, 16) + 1;
h = get_bits(&s->gb, 16) + 1;