80 lines
2.7 KiB
C++
80 lines
2.7 KiB
C++
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/*
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* Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "webrtc/modules/rtp_rtcp/interface/rtp_header_parser.h"
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#include "webrtc/modules/rtp_rtcp/source/rtp_header_extension.h"
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#include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
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#include "webrtc/system_wrappers/interface/critical_section_wrapper.h"
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#include "webrtc/system_wrappers/interface/scoped_ptr.h"
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#include "webrtc/system_wrappers/interface/trace.h"
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namespace webrtc {
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class RtpHeaderParserImpl : public RtpHeaderParser {
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public:
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RtpHeaderParserImpl();
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virtual ~RtpHeaderParserImpl() {}
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virtual bool Parse(const uint8_t* packet, int length,
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RTPHeader* header) const;
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virtual bool RegisterRtpHeaderExtension(RTPExtensionType type, uint8_t id);
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virtual bool DeregisterRtpHeaderExtension(RTPExtensionType type);
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private:
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scoped_ptr<CriticalSectionWrapper> critical_section_;
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RtpHeaderExtensionMap rtp_header_extension_map_;
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};
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RtpHeaderParser* RtpHeaderParser::Create() {
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return new RtpHeaderParserImpl;
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}
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RtpHeaderParserImpl::RtpHeaderParserImpl()
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: critical_section_(CriticalSectionWrapper::CreateCriticalSection()) {}
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bool RtpHeaderParser::IsRtcp(const uint8_t* packet, int length) {
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ModuleRTPUtility::RTPHeaderParser rtp_parser(packet, length);
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return rtp_parser.RTCP();
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}
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bool RtpHeaderParserImpl::Parse(const uint8_t* packet, int length,
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RTPHeader* header) const {
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ModuleRTPUtility::RTPHeaderParser rtp_parser(packet, length);
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memset(header, 0, sizeof(*header));
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RtpHeaderExtensionMap map;
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{
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CriticalSectionScoped cs(critical_section_.get());
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rtp_header_extension_map_.GetCopy(&map);
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}
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const bool valid_rtpheader = rtp_parser.Parse(*header, &map);
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if (!valid_rtpheader) {
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WEBRTC_TRACE(kTraceDebug, kTraceRtpRtcp, -1,
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"IncomingPacket invalid RTP header");
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return false;
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}
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return true;
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}
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bool RtpHeaderParserImpl::RegisterRtpHeaderExtension(RTPExtensionType type,
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uint8_t id) {
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CriticalSectionScoped cs(critical_section_.get());
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return rtp_header_extension_map_.Register(type, id) == 0;
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}
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bool RtpHeaderParserImpl::DeregisterRtpHeaderExtension(RTPExtensionType type) {
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CriticalSectionScoped cs(critical_section_.get());
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return rtp_header_extension_map_.Deregister(type) == 0;
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}
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} // namespace webrtc
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