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| 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 // We limit the size of receiver logs to avoid queuing up packets. | |
| 23 const size_t kMaxReceiverLogBytes = 200; | |
| 24 | |
| 25 // The determines how long to hold receiver log events, based on how | |
| 26 // many "receiver log message reports" ago the events were sent. | |
| 27 const size_t kReceiveLogMessageHistorySize = 20; | |
| 28 | |
| 29 // This determines when to send events the second time. | |
| 30 const size_t kFirstRedundancyOffset = 10; | |
| 31 COMPILE_ASSERT(kFirstRedundancyOffset > 0 && | |
| 32 kFirstRedundancyOffset <= kReceiveLogMessageHistorySize, | |
| 33 redundancy_offset_out_of_range); | |
| 34 | |
| 35 // When to send events the third time. | |
| 36 const size_t kSecondRedundancyOffset = 20; | |
| 37 COMPILE_ASSERT(kSecondRedundancyOffset > | |
| 38 kFirstRedundancyOffset && kSecondRedundancyOffset <= | |
| 39 kReceiveLogMessageHistorySize, | |
| 40 redundancy_offset_out_of_range); | |
| 41 | |
| 42 | |
| 43 class RtcpBuilder { | |
| 44 public: | |
| 45 explicit RtcpBuilder(uint32 sending_ssrc); | |
| 46 ~RtcpBuilder(); | |
| 47 | |
| 48 PacketRef BuildRtcpFromReceiver( | |
| 49 const RtcpReportBlock* report_block, | |
| 50 const RtcpReceiverReferenceTimeReport* rrtr, | |
| 51 const RtcpCastMessage* cast_message, | |
| 52 const ReceiverRtcpEventSubscriber::RtcpEventMultiMap* rtcp_events, | |
| 53 base::TimeDelta target_delay); | |
| 54 | |
| 55 PacketRef BuildRtcpFromSender(const RtcpSenderInfo& sender_info); | |
| 56 | |
| 57 private: | |
| 58 void AddRtcpHeader(RtcpPacketFields payload, int format_or_count); | |
| 59 void PatchLengthField(); | |
| 60 void AddRR(const RtcpReportBlock* report_block); | |
| 61 void AddReportBlocks(const RtcpReportBlock& report_block); | |
| 62 void AddRrtr(const RtcpReceiverReferenceTimeReport* rrtr); | |
| 63 void AddCast(const RtcpCastMessage* cast_message, | |
| 64 base::TimeDelta target_delay); | |
| 65 void AddSR(const RtcpSenderInfo& sender_info); | |
| 66 void AddDlrrRb(const RtcpDlrrReportBlock& dlrr); | |
| 67 void AddReceiverLog( | |
| 68 const ReceiverRtcpEventSubscriber::RtcpEventMultiMap& rtcp_events); | |
| 69 | |
| 70 bool GetRtcpReceiverLogMessage( | |
| 71 const ReceiverRtcpEventSubscriber::RtcpEventMultiMap& rtcp_events, | |
| 72 RtcpReceiverLogMessage* receiver_log_message, | |
| 73 size_t* total_number_of_messages_to_send); | |
| 74 | |
| 75 void Start(); | |
| 76 PacketRef Finish(); | |
| 77 | |
| 78 base::BigEndianWriter writer_; | |
| 79 const uint32 ssrc_; | |
| 80 char* ptr_of_length_; | |
| 81 PacketRef packet_; | |
| 82 std::deque<RtcpReceiverLogMessage> rtcp_events_history_; | |
| 83 | |
| 84 DISALLOW_COPY_AND_ASSIGN(RtcpBuilder); | |
| 85 }; | |
| 86 | |
| 87 } // namespace cast | |
| 88 } // namespace media | |
| 89 | |
| 90 #endif // MEDIA_CAST_NET_RTCP_RTCP_SENDER_H_ | |
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Chromium Code Reviews
Issue 541293004:
Revert of Cast: Re-factor rtcp_sender.cc into rtcp_builder.cc and do some cleanup (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master