media/cast/net/rtcp/rtcp_builder.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef MEDIA_CAST_NET_RTCP_RTCP_BUILDER_H_
   6 #define MEDIA_CAST_NET_RTCP_RTCP_BUILDER_H_
   7
   8 #include <deque>
   9 #include <list>
  10 #include <string>
  11
  12 #include "base/big_endian.h"
  13 #include "media/cast/cast_config.h"
  14 #include "media/cast/cast_defines.h"
  15 #include "media/cast/net/cast_transport_defines.h"
  16 #include "media/cast/net/rtcp/receiver_rtcp_event_subscriber.h"
  17 #include "media/cast/net/rtcp/rtcp_defines.h"
  18
  19 namespace media {
  20 namespace cast {
  21
  22 class RtcpBuilder {
  23  public:
  24   explicit RtcpBuilder(uint32 sending_ssrc);
  25   ~RtcpBuilder();
  26
  27   PacketRef BuildRtcpFromReceiver(
  28       const RtcpReportBlock* report_block,
  29       const RtcpReceiverReferenceTimeReport* rrtr,
  30       const RtcpCastMessage* cast_message,
  31       const ReceiverRtcpEventSubscriber::RtcpEvents* rtcp_events,
  32       base::TimeDelta target_delay);
  33
  34   PacketRef BuildRtcpFromSender(const RtcpSenderInfo& sender_info);
  35
  36  private:
  37   void AddRtcpHeader(RtcpPacketFields payload, int format_or_count);
  38   void PatchLengthField();
  39   void AddRR(const RtcpReportBlock* report_block);
  40   void AddReportBlocks(const RtcpReportBlock& report_block);
  41   void AddRrtr(const RtcpReceiverReferenceTimeReport* rrtr);
  42   void AddCast(const RtcpCastMessage* cast_message,
  43                base::TimeDelta target_delay);
  44   void AddSR(const RtcpSenderInfo& sender_info);
  45   void AddDlrrRb(const RtcpDlrrReportBlock& dlrr);
  46   void AddReceiverLog(
  47       const ReceiverRtcpEventSubscriber::RtcpEvents& rtcp_events);
  48
  49   bool GetRtcpReceiverLogMessage(
  50       const ReceiverRtcpEventSubscriber::RtcpEvents& rtcp_events,
  51       RtcpReceiverLogMessage* receiver_log_message,
  52       size_t* total_number_of_messages_to_send);
  53
  54   void Start();
  55   PacketRef Finish();
  56
  57   base::BigEndianWriter writer_;
  58   const uint32 ssrc_;
  59   char* ptr_of_length_;
  60   PacketRef packet_;
  61
  62   DISALLOW_COPY_AND_ASSIGN(RtcpBuilder);
  63 };
  64
  65 }  // namespace cast
  66 }  // namespace media
  67
  68 #endif  // MEDIA_CAST_NET_RTCP_RTCP_SENDER_H_