if (s->qscale <= 0)
return AVERROR_INVALIDDATA;
+ if (s->pict_type != AV_PICTURE_TYPE_I && show_bits(&s->gb, 1)) {
+ GetBitContext gb = s->gb;
+ int skip_type = get_bits(&gb, 2);
+ int run = skip_type == SKIP_TYPE_COL ? s->mb_width : s->mb_height;
+
+ while (run > 0) {
+ int block = FFMIN(run, 25);
+ if (get_bits(&gb, block) + 1 != 1<<block)
+ break;
+ run -= block;
+ }
+ if (!run)
+ return FRAME_SKIPPED;
+ }
+
return 0;
}