1 /*
2 * Copyright (c) 2013 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 #include "test/rtp_header_parser.h"
11
12 #include <memory>
13
14 #include "modules/rtp_rtcp/include/rtp_header_extension_map.h"
15 #include "modules/rtp_rtcp/source/rtp_utility.h"
16 #include "rtc_base/synchronization/mutex.h"
17 #include "rtc_base/thread_annotations.h"
18
19 namespace webrtc {
20
21 class RtpHeaderParserImpl : public RtpHeaderParser {
22 public:
23 RtpHeaderParserImpl();
24 ~RtpHeaderParserImpl() override = default;
25
26 bool Parse(const uint8_t* packet,
27 size_t length,
28 RTPHeader* header) const override;
29
30 bool RegisterRtpHeaderExtension(RTPExtensionType type, uint8_t id) override;
31 bool RegisterRtpHeaderExtension(RtpExtension extension) override;
32
33 bool DeregisterRtpHeaderExtension(RTPExtensionType type) override;
34 bool DeregisterRtpHeaderExtension(RtpExtension extension) override;
35
36 private:
37 mutable Mutex mutex_;
38 RtpHeaderExtensionMap rtp_header_extension_map_ RTC_GUARDED_BY(mutex_);
39 };
40
CreateForTest()41 std::unique_ptr<RtpHeaderParser> RtpHeaderParser::CreateForTest() {
42 return std::make_unique<RtpHeaderParserImpl>();
43 }
44
RtpHeaderParserImpl()45 RtpHeaderParserImpl::RtpHeaderParserImpl() {}
46
IsRtcp(const uint8_t * packet,size_t length)47 bool RtpHeaderParser::IsRtcp(const uint8_t* packet, size_t length) {
48 RtpUtility::RtpHeaderParser rtp_parser(packet, length);
49 return rtp_parser.RTCP();
50 }
51
GetSsrc(const uint8_t * packet,size_t length)52 absl::optional<uint32_t> RtpHeaderParser::GetSsrc(const uint8_t* packet,
53 size_t length) {
54 RtpUtility::RtpHeaderParser rtp_parser(packet, length);
55 RTPHeader header;
56 if (rtp_parser.Parse(&header, nullptr)) {
57 return header.ssrc;
58 }
59 return absl::nullopt;
60 }
61
Parse(const uint8_t * packet,size_t length,RTPHeader * header) const62 bool RtpHeaderParserImpl::Parse(const uint8_t* packet,
63 size_t length,
64 RTPHeader* header) const {
65 RtpUtility::RtpHeaderParser rtp_parser(packet, length);
66 *header = RTPHeader();
67
68 RtpHeaderExtensionMap map;
69 {
70 MutexLock lock(&mutex_);
71 map = rtp_header_extension_map_;
72 }
73
74 const bool valid_rtpheader = rtp_parser.Parse(header, &map);
75 if (!valid_rtpheader) {
76 return false;
77 }
78 return true;
79 }
RegisterRtpHeaderExtension(RtpExtension extension)80 bool RtpHeaderParserImpl::RegisterRtpHeaderExtension(RtpExtension extension) {
81 MutexLock lock(&mutex_);
82 return rtp_header_extension_map_.RegisterByUri(extension.id, extension.uri);
83 }
84
RegisterRtpHeaderExtension(RTPExtensionType type,uint8_t id)85 bool RtpHeaderParserImpl::RegisterRtpHeaderExtension(RTPExtensionType type,
86 uint8_t id) {
87 MutexLock lock(&mutex_);
88 return rtp_header_extension_map_.RegisterByType(id, type);
89 }
90
DeregisterRtpHeaderExtension(RtpExtension extension)91 bool RtpHeaderParserImpl::DeregisterRtpHeaderExtension(RtpExtension extension) {
92 MutexLock lock(&mutex_);
93 return rtp_header_extension_map_.Deregister(
94 rtp_header_extension_map_.GetType(extension.id));
95 }
96
DeregisterRtpHeaderExtension(RTPExtensionType type)97 bool RtpHeaderParserImpl::DeregisterRtpHeaderExtension(RTPExtensionType type) {
98 MutexLock lock(&mutex_);
99 return rtp_header_extension_map_.Deregister(type) == 0;
100 }
101 } // namespace webrtc
102