Cast: Get rid of frame_id_map

media/cast/net/rtp/frame_buffer.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef MEDIA_CAST_FRAMER_FRAME_BUFFER
 #define MEDIA_CAST_FRAMER_FRAME_BUFFER
 
 #include <map>
 #include <vector>
 
 #include "media/cast/cast_config.h"
 #include "media/cast/net/rtp/rtp_receiver_defines.h"
 
 namespace media {
 namespace cast {
 
 typedef std::map<uint16, std::vector<uint8> > PacketMap;
 
 class FrameBuffer {
  public:
   FrameBuffer();
   ~FrameBuffer();
-  void InsertPacket(const uint8* payload_data,
+  bool InsertPacket(const uint8* payload_data,
                     size_t payload_size,
                     const RtpCastHeader& rtp_header);
   bool Complete() const;
 
+  void GetMissingPackets(bool newest_frame, PacketIdSet* missing_packets) const;
+
   // If a frame is complete, sets the frame IDs and RTP timestamp in |frame|,
   // and also copies the data from all packets into the data field in |frame|.
   // Returns true if the frame was complete; false if incomplete and |frame|
   // remains unchanged.
   bool AssembleEncodedFrame(EncodedFrame* frame) const;
 
   bool is_key_frame() const { return is_key_frame_; }
-
   uint32 last_referenced_frame_id() const { return last_referenced_frame_id_; }
+  uint32 frame_id() const { return frame_id_; }
 
  private:
   uint32 frame_id_;
   uint16 max_packet_id_;
   uint16 num_packets_received_;
+  uint16 max_seen_packet_id_;
   uint16 new_playout_delay_ms_;
   bool is_key_frame_;
   size_t total_data_size_;
   uint32 last_referenced_frame_id_;
   uint32 rtp_timestamp_;
   PacketMap packets_;
 
   DISALLOW_COPY_AND_ASSIGN(FrameBuffer);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_FRAMER_FRAME_BUFFER