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1 /* | |
2 * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved. | |
3 * | |
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 | |
6 * tree. An additional intellectual property rights grant can be found | |
7 * in the file PATENTS. All contributing project authors may | |
8 * be found in the AUTHORS file in the root of the source tree. | |
9 */ | |
10 | |
11 #include "webrtc/call/rtp_rtcp_demuxer_helper.h" | |
12 | |
13 #include "webrtc/modules/rtp_rtcp/source/byte_io.h" | |
14 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/bye.h" | |
15 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/common_header.h" | |
16 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/psfb.h" | |
17 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/receiver_report.h" | |
18 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/rtpfb.h" | |
19 #include "webrtc/modules/rtp_rtcp/source/rtcp_packet/sender_report.h" | |
20 | |
21 namespace webrtc { | |
22 | |
23 rtc::Optional<uint32_t> ParseRtcpPacketSenderSsrc( | |
24 rtc::ArrayView<const uint8_t> packet) { | |
25 rtcp::CommonHeader header; | |
26 for (const uint8_t* next_packet = packet.begin(); next_packet != packet.end(); | |
27 next_packet = header.NextPacket()) { | |
28 if (!header.Parse(next_packet, packet.end() - next_packet)) { | |
29 return rtc::Optional<uint32_t>(); | |
30 } | |
31 | |
32 if (header.payload_size_bytes() >= sizeof(uint32_t)) { | |
33 switch (header.type()) { | |
34 case rtcp::Bye::kPacketType: | |
35 case rtcp::Psfb::kPacketType: | |
36 case rtcp::ReceiverReport::kPacketType: | |
37 case rtcp::Rtpfb::kPacketType: | |
38 case rtcp::SenderReport::kPacketType: | |
39 // Sender SSRC at the beginning of the RTCP payload. | |
40 const uint32_t ssrc_sender = | |
41 webrtc::ByteReader<uint32_t>::ReadBigEndian(header.payload()); | |
danilchap
2017/06/19 13:31:56
drop webrtc:: prefix
eladalon
2017/06/19 14:35:17
Done.
| |
42 return rtc::Optional<uint32_t>(ssrc_sender); | |
43 } | |
44 } | |
45 } | |
46 | |
47 return rtc::Optional<uint32_t>(); | |
48 } | |
49 | |
50 } // namespace webrtc | |
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