1 // Copyright 2013 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 // A very simple packet builder class for building RTCP packets. 6 // Used for testing only. 7 #ifndef MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_ 8 #define MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_ 9 10 #include "base/big_endian.h" 11 #include "media/cast/cast_config.h" 12 #include "media/cast/rtcp/rtcp_defines.h" 13 14 namespace media { 15 namespace cast { 16 17 // These values are arbitrary only for the purpose of testing. 18 19 namespace { 20 // Sender report. 21 static const int kNtpHigh = 0x01020304; 22 static const int kNtpLow = 0x05060708; 23 static const int kRtpTimestamp = 0x10203040; 24 static const int kSendPacketCount = 987; 25 static const int kSendOctetCount = 87654; 26 27 // Report block. 28 static const int kLoss = 0x01000123; 29 static const int kExtendedMax = 0x15678; 30 static const int kTestJitter = 0x10203; 31 static const int kLastSr = 0x34561234; 32 static const int kDelayLastSr = 1000; 33 34 // DLRR block. 35 static const int kLastRr = 0x34561234; 36 static const int kDelayLastRr = 1000; 37 38 // REMB. 39 static const int kTestRembBitrate = 52428; 40 41 // RPSI. 42 static const int kPayloadtype = 126; 43 static const uint64 kPictureId = 0x1234567890; 44 45 // NACK. 46 static const int kMissingPacket = 34567; 47 48 // CAST. 49 static const uint32 kAckFrameId = 17; 50 static const uint32 kLostFrameId = 18; 51 static const uint32 kFrameIdWithLostPackets = 19; 52 static const int kLostPacketId1 = 3; 53 static const int kLostPacketId2 = 5; 54 static const int kLostPacketId3 = 12; 55 } // namespace 56 57 class TestRtcpPacketBuilder { 58 public: 59 TestRtcpPacketBuilder(); 60 61 void AddSr(uint32 sender_ssrc, int number_of_report_blocks); 62 void AddSrWithNtp(uint32 sender_ssrc, 63 uint32 ntp_high, 64 uint32 ntp_low, 65 uint32 rtp_timestamp); 66 void AddRr(uint32 sender_ssrc, int number_of_report_blocks); 67 void AddRb(uint32 rtp_ssrc); 68 void AddSdesCname(uint32 sender_ssrc, const std::string& c_name); 69 70 void AddXrHeader(uint32 sender_ssrc); 71 void AddXrDlrrBlock(uint32 sender_ssrc); 72 void AddXrExtendedDlrrBlock(uint32 sender_ssrc); 73 void AddXrRrtrBlock(); 74 void AddXrUnknownBlock(); 75 76 void AddNack(uint32 sender_ssrc, uint32 media_ssrc); 77 void AddSendReportRequest(uint32 sender_ssrc, uint32 media_ssrc); 78 79 void AddPli(uint32 sender_ssrc, uint32 media_ssrc); 80 void AddRpsi(uint32 sender_ssrc, uint32 media_ssrc); 81 void AddRemb(uint32 sender_ssrc, uint32 media_ssrc); 82 void AddCast(uint32 sender_ssrc, uint32 media_ssrc, uint16 target_delay_ms); 83 void AddReceiverLog(uint32 sender_ssrc); 84 void AddReceiverFrameLog(uint32 rtp_timestamp, 85 int num_events, 86 uint32 event_timesamp_base); 87 void AddReceiverEventLog(uint16 event_data, 88 CastLoggingEvent event, 89 uint16 event_timesamp_delta); 90 91 scoped_ptr<Packet> GetPacket(); 92 const uint8* Data(); Length()93 int Length() { return kMaxIpPacketSize - big_endian_writer_.remaining(); } 94 95 private: 96 void AddRtcpHeader(int payload, int format_or_count); 97 void PatchLengthField(); 98 99 // Where the length field of the current packet is. 100 // Note: 0 is not a legal value, it is used for "uninitialized". 101 uint8 buffer_[kMaxIpPacketSize]; 102 char* ptr_of_length_; 103 base::BigEndianWriter big_endian_writer_; 104 105 DISALLOW_COPY_AND_ASSIGN(TestRtcpPacketBuilder); 106 }; 107 108 } // namespace cast 109 } // namespace media 110 111 #endif // MEDIA_CAST_RTCP_TEST_RTCP_PACKET_BUILDER_H_ 112