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