Logic for finding frame references moved from PacketBuffer to new class

webrtc/modules/video_coding/frame_object.h

 /*
  *  Copyright (c) 2016 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_FRAME_OBJECT_H_
 #define WEBRTC_MODULES_VIDEO_CODING_FRAME_OBJECT_H_
 
-#include <stddef.h>
-#include <stdint.h>
-
-#include <array>
+#include "webrtc/common_types.h"
+#include "webrtc/modules/include/module_common_types.h"
 
 namespace webrtc {
 namespace video_coding {
 
 class FrameObject {
  public:
   static const uint8_t kMaxFrameReferences = 5;
 
   FrameObject();
 
   virtual bool GetBitstream(uint8_t* destination) const = 0;
   virtual ~FrameObject() {}
 
   // The tuple (|picture_id|, |spatial_layer|) uniquely identifies a frame
   // object. For codec types that don't necessarily have picture ids they
   // have to be constructed from the header data relevant to that codec.
   uint16_t picture_id;
   uint8_t spatial_layer;
 
   size_t num_references;
   uint16_t references[kMaxFrameReferences];
   bool inter_layer_predicted;
 };
 
 class PacketBuffer;
 
 class RtpFrameObject : public FrameObject {
  public:
   RtpFrameObject(PacketBuffer* packet_buffer,
-                 uint16_t first_packet,
-                 uint16_t last_packet);
+                 uint16_t first_seq_num,
+                 uint16_t last_seq_num);
 
   ~RtpFrameObject();
   uint16_t first_seq_num() const;
   uint16_t last_seq_num() const;
+  FrameType frame_type() const;
+  VideoCodecType codec_type() const;
   bool GetBitstream(uint8_t* destination) const override;
+  RTPVideoTypeHeader* GetCodecHeader() const;
 
  private:
   PacketBuffer* packet_buffer_;
-  uint16_t first_packet_;
-  uint16_t last_packet_;
+  FrameType frame_type_;
+  VideoCodecType codec_type_;
+  uint16_t first_seq_num_;
+  uint16_t last_seq_num_;
 };
 
 }  // namespace video_coding
 }  // namespace webrtc
 
 #endif  // WEBRTC_MODULES_VIDEO_CODING_FRAME_OBJECT_H_