Cast: Deduplicate packets in paced sender and always send older packets first

media/cast/transport/rtp_sender/rtp_packetizer/rtp_packetizer.h

 // Copyright 2013 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_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
 #define MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_
 
 #include <cmath>
 #include <list>
 #include <map>
@@ skipping 66 matching lines @@
 
   int send_packets_count() { return send_packets_count_; }
 
   size_t send_octet_count() { return send_octet_count_; }
 
  private:
   void Cast(bool is_key,
             uint32 frame_id,
             uint32 reference_frame_id,
             uint32 timestamp,
-            const std::string& data);
+            const std::string& data,
+            const base::TimeTicks& capture_time);
 
   void BuildCommonRTPheader(Packet* packet, bool marker_bit, uint32 time_stamp);
 
   RtpPacketizerConfig config_;
   PacedSender* const transport_;  // Not owned by this class.
   PacketStorage* packet_storage_;
   base::TickClock* const clock_;  // Not owned by this class.
   LoggingImpl* const logging_;    // Not owned by this class.
 
   base::TimeTicks time_last_sent_rtp_timestamp_;
   uint16 sequence_number_;
   uint32 rtp_timestamp_;
   uint16 packet_id_;
 
   int send_packets_count_;
   size_t send_octet_count_;
 };
 
 }  // namespace transport
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_TRANSPORT_RTP_SENDER_RTP_PACKETIZER_RTP_PACKETIZER_H_