OLD | NEW |
1 /* | 1 /* |
2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. | 2 * Copyright (c) 2014 The WebRTC project authors. All Rights Reserved. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license | 4 * Use of this source code is governed by a BSD-style license |
5 * that can be found in the LICENSE file in the root of the source | 5 * that can be found in the LICENSE file in the root of the source |
6 * tree. An additional intellectual property rights grant can be found | 6 * tree. An additional intellectual property rights grant can be found |
7 * in the file PATENTS. All contributing project authors may | 7 * in the file PATENTS. All contributing project authors may |
8 * be found in the AUTHORS file in the root of the source tree. | 8 * be found in the AUTHORS file in the root of the source tree. |
9 * | 9 * |
10 */ | 10 */ |
11 | 11 |
12 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ | 12 #ifndef WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ |
13 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ | 13 #define WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ |
14 | 14 |
15 #include <vector> | 15 #include <vector> |
16 | 16 |
17 #include "webrtc/base/scoped_ptr.h" | 17 #include "webrtc/base/scoped_ptr.h" |
18 #include "webrtc/modules/rtp_rtcp/include/rtp_rtcp_defines.h" | |
19 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/report_block.h" | |
20 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h" | 18 #include "webrtc/modules/rtp_rtcp/source/rtcp_utility.h" |
21 #include "webrtc/typedefs.h" | 19 #include "webrtc/typedefs.h" |
22 | 20 |
23 namespace webrtc { | 21 namespace webrtc { |
24 namespace rtcp { | 22 namespace rtcp { |
25 | 23 |
26 static const int kCommonFbFmtLength = 12; | 24 static const int kCommonFbFmtLength = 12; |
27 static const int kReportBlockLength = 24; | |
28 | 25 |
29 class RawPacket; | 26 class RawPacket; |
30 | 27 |
31 // Class for building RTCP packets. | 28 // Class for building RTCP packets. |
32 // | 29 // |
33 // Example: | 30 // Example: |
34 // ReportBlock report_block; | 31 // ReportBlock report_block; |
35 // report_block.To(234) | 32 // report_block.To(234) |
36 // report_block.FractionLost(10); | 33 // report_block.FractionLost(10); |
37 // | 34 // |
(...skipping 75 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
113 static const size_t kHeaderLength = 4; | 110 static const size_t kHeaderLength = 4; |
114 std::vector<RtcpPacket*> appended_packets_; | 111 std::vector<RtcpPacket*> appended_packets_; |
115 | 112 |
116 private: | 113 private: |
117 bool CreateAndAddAppended(uint8_t* packet, | 114 bool CreateAndAddAppended(uint8_t* packet, |
118 size_t* index, | 115 size_t* index, |
119 size_t max_length, | 116 size_t max_length, |
120 PacketReadyCallback* callback) const; | 117 PacketReadyCallback* callback) const; |
121 }; | 118 }; |
122 | 119 |
123 // TODO(sprang): Move RtcpPacket subclasses out to separate files. | |
124 | |
125 // RTCP sender report (RFC 3550). | |
126 // | |
127 // 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 | |
128 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
129 // |V=2|P| RC | PT=SR=200 | length | | |
130 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
131 // | SSRC of sender | | |
132 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ | |
133 // | NTP timestamp, most significant word | | |
134 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
135 // | NTP timestamp, least significant word | | |
136 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
137 // | RTP timestamp | | |
138 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
139 // | sender's packet count | | |
140 // +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | |
141 // | sender's octet count | | |
142 // +=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ | |
143 // | report block(s) | | |
144 // | .... | | |
145 | |
146 class SenderReport : public RtcpPacket { | |
147 public: | |
148 SenderReport() : RtcpPacket() { | |
149 memset(&sr_, 0, sizeof(sr_)); | |
150 } | |
151 | |
152 virtual ~SenderReport() {} | |
153 | |
154 void From(uint32_t ssrc) { | |
155 sr_.SenderSSRC = ssrc; | |
156 } | |
157 void WithNtpSec(uint32_t sec) { | |
158 sr_.NTPMostSignificant = sec; | |
159 } | |
160 void WithNtpFrac(uint32_t frac) { | |
161 sr_.NTPLeastSignificant = frac; | |
162 } | |
163 void WithRtpTimestamp(uint32_t rtp_timestamp) { | |
164 sr_.RTPTimestamp = rtp_timestamp; | |
165 } | |
166 void WithPacketCount(uint32_t packet_count) { | |
167 sr_.SenderPacketCount = packet_count; | |
168 } | |
169 void WithOctetCount(uint32_t octet_count) { | |
170 sr_.SenderOctetCount = octet_count; | |
171 } | |
172 bool WithReportBlock(const ReportBlock& block); | |
173 | |
174 protected: | |
175 bool Create(uint8_t* packet, | |
176 size_t* index, | |
177 size_t max_length, | |
178 RtcpPacket::PacketReadyCallback* callback) const override; | |
179 | |
180 private: | |
181 static const int kMaxNumberOfReportBlocks = 0x1f; | |
182 | |
183 size_t BlockLength() const { | |
184 const size_t kSrHeaderLength = 8; | |
185 const size_t kSenderInfoLength = 20; | |
186 return kSrHeaderLength + kSenderInfoLength + | |
187 report_blocks_.size() * kReportBlockLength; | |
188 } | |
189 | |
190 RTCPUtility::RTCPPacketSR sr_; | |
191 std::vector<ReportBlock> report_blocks_; | |
192 | |
193 RTC_DISALLOW_COPY_AND_ASSIGN(SenderReport); | |
194 }; | |
195 | |
196 // Class holding a RTCP packet. | 120 // Class holding a RTCP packet. |
197 // | 121 // |
198 // Takes a built rtcp packet. | 122 // Takes a built rtcp packet. |
199 // RawPacket raw_packet(buffer, length); | 123 // RawPacket raw_packet(buffer, length); |
200 // | 124 // |
201 // To access the raw packet: | 125 // To access the raw packet: |
202 // raw_packet.Buffer(); - pointer to the raw packet | 126 // raw_packet.Buffer(); - pointer to the raw packet |
203 // raw_packet.BufferLength(); - the length of the raw packet | 127 // raw_packet.BufferLength(); - the length of the raw packet |
204 | 128 |
205 class RawPacket { | 129 class RawPacket { |
206 public: | 130 public: |
207 explicit RawPacket(size_t buffer_length); | 131 explicit RawPacket(size_t buffer_length); |
208 RawPacket(const uint8_t* packet, size_t packet_length); | 132 RawPacket(const uint8_t* packet, size_t packet_length); |
209 | 133 |
210 const uint8_t* Buffer() const; | 134 const uint8_t* Buffer() const; |
211 uint8_t* MutableBuffer(); | 135 uint8_t* MutableBuffer(); |
212 size_t BufferLength() const; | 136 size_t BufferLength() const; |
213 size_t Length() const; | 137 size_t Length() const; |
214 void SetLength(size_t length); | 138 void SetLength(size_t length); |
215 | 139 |
216 private: | 140 private: |
217 const size_t buffer_length_; | 141 const size_t buffer_length_; |
218 size_t length_; | 142 size_t length_; |
219 rtc::scoped_ptr<uint8_t[]> buffer_; | 143 rtc::scoped_ptr<uint8_t[]> buffer_; |
220 }; | 144 }; |
221 | 145 |
222 } // namespace rtcp | 146 } // namespace rtcp |
223 } // namespace webrtc | 147 } // namespace webrtc |
224 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ | 148 #endif // WEBRTC_MODULES_RTP_RTCP_SOURCE_RTCP_PACKET_H_ |
OLD | NEW |