Fixed rtcp rpsi parsing of invalid packets.

webrtc/modules/rtp_rtcp/source/rtcp_receiver.cc

 /*
  *  Copyright (c) 2012 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 1083 matching lines @@
   rtcpPacketInformation.rtcpPacketTypeFlags |= kRtcpSli; // received signal that we need to refresh a slice
   rtcpPacketInformation.sliPictureId = rtcpPacket.SLIItem.PictureId;
 }
 
 void
 RTCPReceiver::HandleRPSI(RTCPUtility::RTCPParserV2& rtcpParser,
                          RTCPHelp::RTCPPacketInformation& rtcpPacketInformation)
 {
     const RTCPUtility::RTCPPacket& rtcpPacket = rtcpParser.Packet();
     RTCPUtility::RTCPPacketTypes pktType = rtcpParser.Iterate();
-    if (pktType == RTCPPacketTypes::kPsfbRpsi) {
-        rtcpPacketInformation.rtcpPacketTypeFlags |= kRtcpRpsi; // received signal that we have a confirmed reference picture
+    if (pktType == RTCPPacketTypes::kPsfbRpsiItem) {
         if(rtcpPacket.RPSI.NumberOfValidBits%8 != 0)
         {
             // to us unknown
             // continue
             rtcpParser.Iterate();
             return;
         }
+        // Received signal that we have a confirmed reference picture.
+        rtcpPacketInformation.rtcpPacketTypeFlags |= kRtcpRpsi;
         rtcpPacketInformation.rpsiPictureId = 0;
 
         // convert NativeBitString to rpsiPictureId
         uint8_t numberOfBytes = rtcpPacket.RPSI.NumberOfValidBits /8;
         for(uint8_t n = 0; n < (numberOfBytes-1); n++)
         {
             rtcpPacketInformation.rpsiPictureId += (rtcpPacket.RPSI.NativeBitString[n] & 0x7f);
             rtcpPacketInformation.rpsiPictureId <<= 7; // prepare next
         }
         rtcpPacketInformation.rpsiPictureId += (rtcpPacket.RPSI.NativeBitString[numberOfBytes-1] & 0x7f);
@@ skipping 320 matching lines @@
         return -1;
       }
       num += receiveInfo->TmmbrSet.lengthOfSet();
       receiveInfoIt++;
     }
   }
   return num;
 }
 
 }  // namespace webrtc