Use sps and pps to determine decodability of H.264 frames.

webrtc/modules/video_coding/session_info.h

 /*
  *  Copyright (c) 2011 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.
  */
 
 #ifndef WEBRTC_MODULES_VIDEO_CODING_SESSION_INFO_H_
 #define WEBRTC_MODULES_VIDEO_CODING_SESSION_INFO_H_
 
 #include <list>
+#include <vector>
 
 #include "webrtc/modules/include/module_common_types.h"
 #include "webrtc/modules/video_coding/include/video_coding.h"
 #include "webrtc/modules/video_coding/packet.h"
 #include "webrtc/typedefs.h"
 
 namespace webrtc {
 // Used to pass data from jitter buffer to session info.
 // This data is then used in determining whether a frame is decodable.
 struct FrameData {
@@ skipping 56 matching lines @@
   int LowSequenceNumber() const;
 
   // Returns highest sequence number, media or empty.
   int HighSequenceNumber() const;
   int PictureId() const;
   int TemporalId() const;
   bool LayerSync() const;
   int Tl0PicId() const;
   bool NonReference() const;
 
+  std::vector<NaluInfo> GetNaluInfos() const;

[philipel, 2016/09/15 12:52:46]

Return "rtc::ArrayView<NaluInfo>" instead.

[stefan-webrtc, 2016/09/30 09:36:02]

I don't think it's possible since a session info can contain several packets
each having an array of nalu infos.

+
   void SetGofInfo(const GofInfoVP9& gof_info, size_t idx);
 
   // The number of packets discarded because the decoder can't make use of
   // them.
   int packets_not_decodable() const;
 
  private:
   enum { kMaxVP8Partitions = 9 };
 
   typedef std::list<VCMPacket> PacketList;
@@ skipping 60 matching lines @@
   // They are not necessarily equal to the front and back packets, as packets
   // may enter out of order.
   // TODO(mikhal): Refactor the list to use a map.
   int first_packet_seq_num_;
   int last_packet_seq_num_;
 };
 
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_SESSION_INFO_H_