| /* |
| * Copyright (c) 2013 The WebRTC project authors. All Rights Reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| #include "webrtc/modules/rtp_rtcp/include/rtp_header_parser.h" |
| |
| #include "webrtc/base/criticalsection.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtp_header_extension.h" |
| #include "webrtc/modules/rtp_rtcp/source/rtp_utility.h" |
| |
| namespace webrtc { |
| |
| class RtpHeaderParserImpl : public RtpHeaderParser { |
| public: |
| RtpHeaderParserImpl(); |
| virtual ~RtpHeaderParserImpl() {} |
| |
| bool Parse(const uint8_t* packet, |
| size_t length, |
| RTPHeader* header) const override; |
| |
| bool RegisterRtpHeaderExtension(RTPExtensionType type, uint8_t id) override; |
| |
| bool DeregisterRtpHeaderExtension(RTPExtensionType type) override; |
| |
| private: |
| rtc::CriticalSection critical_section_; |
| RtpHeaderExtensionMap rtp_header_extension_map_ GUARDED_BY(critical_section_); |
| }; |
| |
| RtpHeaderParser* RtpHeaderParser::Create() { |
| return new RtpHeaderParserImpl; |
| } |
| |
| RtpHeaderParserImpl::RtpHeaderParserImpl() {} |
| |
| bool RtpHeaderParser::IsRtcp(const uint8_t* packet, size_t length) { |
| RtpUtility::RtpHeaderParser rtp_parser(packet, length); |
| return rtp_parser.RTCP(); |
| } |
| |
| bool RtpHeaderParserImpl::Parse(const uint8_t* packet, |
| size_t length, |
| RTPHeader* header) const { |
| RtpUtility::RtpHeaderParser rtp_parser(packet, length); |
| memset(header, 0, sizeof(*header)); |
| |
| RtpHeaderExtensionMap map; |
| { |
| rtc::CritScope cs(&critical_section_); |
| rtp_header_extension_map_.GetCopy(&map); |
| } |
| |
| const bool valid_rtpheader = rtp_parser.Parse(header, &map); |
| if (!valid_rtpheader) { |
| return false; |
| } |
| return true; |
| } |
| |
| bool RtpHeaderParserImpl::RegisterRtpHeaderExtension(RTPExtensionType type, |
| uint8_t id) { |
| rtc::CritScope cs(&critical_section_); |
| return rtp_header_extension_map_.Register(type, id) == 0; |
| } |
| |
| bool RtpHeaderParserImpl::DeregisterRtpHeaderExtension(RTPExtensionType type) { |
| rtc::CritScope cs(&critical_section_); |
| return rtp_header_extension_map_.Deregister(type) == 0; |
| } |
| } // namespace webrtc |