70 lines
1.8 KiB
C
70 lines
1.8 KiB
C
|
/*
|
||
|
|
* Copyright (c) 2011 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#ifndef WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|
||
|
|
#define WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|
||
|
|
|
||
|
|
#include "map_wrapper.h"
|
||
|
|
#include "rtp_rtcp_defines.h"
|
||
|
|
#include "typedefs.h"
|
||
|
|
|
||
|
|
namespace webrtc {
|
||
|
|
|
||
|
|
enum {RTP_ONE_BYTE_HEADER_EXTENSION = 0xbede};
|
||
|
|
|
||
|
|
enum ExtensionLength {
|
||
|
|
RTP_ONE_BYTE_HEADER_LENGTH_IN_BYTES = 4,
|
||
|
|
TRANSMISSION_TIME_OFFSET_LENGTH_IN_BYTES = 4
|
||
|
|
};
|
||
|
|
|
||
|
|
struct HeaderExtension {
|
||
|
|
HeaderExtension(RTPExtensionType extension_type)
|
||
|
|
: type(extension_type),
|
||
|
|
length(0) {
|
||
|
|
if (type == TRANSMISSION_TIME_OFFSET) {
|
||
|
|
length = TRANSMISSION_TIME_OFFSET_LENGTH_IN_BYTES;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
const RTPExtensionType type;
|
||
|
|
WebRtc_UWord8 length;
|
||
|
|
};
|
||
|
|
|
||
|
|
class RtpHeaderExtensionMap {
|
||
|
|
public:
|
||
|
|
RtpHeaderExtensionMap();
|
||
|
|
~RtpHeaderExtensionMap();
|
||
|
|
|
||
|
|
void Erase();
|
||
|
|
|
||
|
|
WebRtc_Word32 Register(const RTPExtensionType type, const WebRtc_UWord8 id);
|
||
|
|
|
||
|
|
WebRtc_Word32 Deregister(const RTPExtensionType type);
|
||
|
|
|
||
|
|
WebRtc_Word32 GetType(const WebRtc_UWord8 id, RTPExtensionType* type) const;
|
||
|
|
|
||
|
|
WebRtc_Word32 GetId(const RTPExtensionType type, WebRtc_UWord8* id) const;
|
||
|
|
|
||
|
|
WebRtc_UWord16 GetTotalLengthInBytes() const;
|
||
|
|
|
||
|
|
void GetCopy(RtpHeaderExtensionMap* map) const;
|
||
|
|
|
||
|
|
WebRtc_Word32 Size() const;
|
||
|
|
|
||
|
|
RTPExtensionType First() const;
|
||
|
|
|
||
|
|
RTPExtensionType Next(RTPExtensionType type) const;
|
||
|
|
|
||
|
|
private:
|
||
|
|
MapWrapper extensionMap_;
|
||
|
|
};
|
||
|
|
}
|
||
|
|
#endif // WEBRTC_MODULES_RTP_RTCP_RTP_HEADER_EXTENSION_H_
|