Only parse PPS up to PPS and SPS ids in the depacketizater.

webrtc/modules/rtp_rtcp/source/rtp_format_h264.cc

 /*
  *  Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 471 matching lines @@
 
         if (sps) {
           parsed_payload->type.Video.width = sps->width;
           parsed_payload->type.Video.height = sps->height;
           nalu.sps_id = sps->id;
         }
         parsed_payload->frame_type = kVideoFrameKey;
         break;
       }
       case H264::NaluType::kPps: {
-        rtc::Optional<PpsParser::PpsState> pps = PpsParser::ParsePps(
-            &payload_data[start_offset], end_offset - start_offset);
-        if (pps) {
-          nalu.sps_id = pps->sps_id;
-          nalu.pps_id = pps->id;
+        uint32_t pps_id;
+        uint32_t sps_id;
+        if (PpsParser::ParsePpsIds(&payload_data[start_offset],
+                                    end_offset - start_offset, &pps_id,
+                                    &sps_id)) {
+          nalu.pps_id = pps_id;
+          nalu.sps_id = sps_id;
+        } else {
+          LOG(LS_WARNING)
+              << "Failed to parse PPS id and SPS id from PPS slice.";
         }
         break;
       }
       case H264::NaluType::kSei:
         FALLTHROUGH();
       case H264::NaluType::kIdr:
         parsed_payload->frame_type = kVideoFrameKey;
         FALLTHROUGH();
       default: {
         rtc::Optional<uint32_t> pps_id = PpsParser::ParsePpsIdFromSlice(
@@ skipping 57 matching lines @@
   parsed_payload->type.Video.isFirstPacket = first_fragment;
   RTPVideoHeaderH264* h264 = &parsed_payload->type.Video.codecHeader.H264;
   h264->packetization_type = kH264FuA;
   h264->nalu_type = original_nal_type;
   h264->nalus[h264->nalus_length] = nalu;
   h264->nalus_length = 1;
   return true;
 }
 
 }  // namespace webrtc