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/*
* 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/interface/rtp_header_parser.h"
#include "webrtc/base/scoped_ptr.h"
#include "webrtc/modules/rtp_rtcp/source/rtp_header_extension.h"
#include "webrtc/modules/rtp_rtcp/source/rtp_utility.h"
#include "webrtc/system_wrappers/include/critical_section_wrapper.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::scoped_ptr<CriticalSectionWrapper> critical_section_;
RtpHeaderExtensionMap rtp_header_extension_map_ GUARDED_BY(critical_section_);
};
RtpHeaderParser* RtpHeaderParser::Create() {
return new RtpHeaderParserImpl;
}
RtpHeaderParserImpl::RtpHeaderParserImpl()
: critical_section_(CriticalSectionWrapper::CreateCriticalSection()) {}
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;
{
CriticalSectionScoped cs(critical_section_.get());
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) {
CriticalSectionScoped cs(critical_section_.get());
return rtp_header_extension_map_.Register(type, id) == 0;
}
bool RtpHeaderParserImpl::DeregisterRtpHeaderExtension(RTPExtensionType type) {
CriticalSectionScoped cs(critical_section_.get());
return rtp_header_extension_map_.Deregister(type) == 0;
}
} // namespace webrtc
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