2f8d5f3302
BUG= R=andresp@webrtc.org Review URL: https://webrtc-codereview.appspot.com/12039004 git-svn-id: http://webrtc.googlecode.com/svn/trunk@5909 4adac7df-926f-26a2-2b94-8c16560cd09d
89 lines
2.4 KiB
C++
89 lines
2.4 KiB
C++
/*
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* Copyright (c) 2012 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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#ifndef WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
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#define WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
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#include <map>
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#include "webrtc/modules/rtp_rtcp/interface/rtp_rtcp_defines.h"
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#include "webrtc/typedefs.h"
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namespace webrtc {
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const uint16_t kRtpOneByteHeaderExtensionId = 0xBEDE;
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const size_t kRtpOneByteHeaderLength = 4;
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const size_t kTransmissionTimeOffsetLength = 4;
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const size_t kAudioLevelLength = 4;
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const size_t kAbsoluteSendTimeLength = 4;
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struct HeaderExtension {
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HeaderExtension(RTPExtensionType extension_type)
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: type(extension_type),
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length(0) {
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// TODO(solenberg): Create handler classes for header extensions so we can
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// get rid of switches like these as well as handling code spread out all
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// over.
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switch (type) {
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case kRtpExtensionTransmissionTimeOffset:
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length = kTransmissionTimeOffsetLength;
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break;
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case kRtpExtensionAudioLevel:
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length = kAudioLevelLength;
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break;
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case kRtpExtensionAbsoluteSendTime:
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length = kAbsoluteSendTimeLength;
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break;
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default:
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assert(false);
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}
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}
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const RTPExtensionType type;
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uint8_t length;
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};
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class RtpHeaderExtensionMap {
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public:
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RtpHeaderExtensionMap();
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~RtpHeaderExtensionMap();
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void Erase();
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int32_t Register(const RTPExtensionType type, const uint8_t id);
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int32_t Deregister(const RTPExtensionType type);
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bool IsRegistered(RTPExtensionType type) const;
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int32_t GetType(const uint8_t id, RTPExtensionType* type) const;
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int32_t GetId(const RTPExtensionType type, uint8_t* id) const;
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uint16_t GetTotalLengthInBytes() const;
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int32_t GetLengthUntilBlockStartInBytes(const RTPExtensionType type) const;
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void GetCopy(RtpHeaderExtensionMap* map) const;
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int32_t Size() const;
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RTPExtensionType First() const;
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RTPExtensionType Next(RTPExtensionType type) const;
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private:
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std::map<uint8_t, HeaderExtension*> extensionMap_;
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};
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}
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#endif // WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
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