check whether referenced PPS exists (fixes #393)

strukturag · Mar 4, 2023 · 0b1752a · 0b1752a
1 parent d6bf73e
commit 0b1752a
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/libde265/decctx.cc b/libde265/decctx.cc
@@ -2004,9 +2004,10 @@ bool decoder_context::process_slice_segment_header(slice_segment_header* hdr,
  // get PPS and SPS for this slice
 
  int pps_id = hdr->slice_pic_parameter_set_id;
- if (pps[pps_id]->pps_read==false) {
+ if (pps[pps_id]==nullptr || pps[pps_id]->pps_read==false) {
  logerror(LogHeaders, "PPS %d has not been read\n", pps_id);
- assert(false); // TODO
+ img->decctx->add_warning(DE265_WARNING_NONEXISTING_PPS_REFERENCED, false);
+ return false;
  }
 
  current_pps = pps[pps_id];