/usr/include/opal/sip/sdp.h is in libopal-dev 3.10.2~dfsg-0ubuntu1.
This file is owned by root:root, with mode 0o644.
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* sdp.h
*
* Session Description Protocol
*
* Open Phone Abstraction Library (OPAL)
* Formally known as the Open H323 project.
*
* Copyright (c) 2001 Equivalence Pty. Ltd.
*
* The contents of this file are subject to the Mozilla Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License.
*
* The Original Code is Open Phone Abstraction Library.
*
* The Initial Developer of the Original Code is Equivalence Pty. Ltd.
*
* Contributor(s): ______________________________________.
*
* $Revision: 25734 $
* $Author: rjongbloed $
* $Date: 2011-05-10 21:41:47 -0500 (Tue, 10 May 2011) $
*/
#ifndef OPAL_SIP_SDP_H
#define OPAL_SIP_SDP_H
#ifdef P_USE_PRAGMA
#pragma interface
#endif
#include <opal/buildopts.h>
#if OPAL_SIP
#include <opal/transports.h>
#include <opal/mediatype.h>
#include <opal/mediafmt.h>
#include <rtp/rtp.h>
/////////////////////////////////////////////////////////
class SDPBandwidth : public std::map<PCaselessString, unsigned>
{
public:
unsigned & operator[](const PCaselessString & type);
unsigned operator[](const PCaselessString & type) const;
friend ostream & operator<<(ostream & out, const SDPBandwidth & bw);
bool Parse(const PString & param);
void SetMax(const PCaselessString & type, unsigned value);
};
/////////////////////////////////////////////////////////
class SDPMediaDescription;
class SDPMediaFormat : public PObject
{
PCLASSINFO(SDPMediaFormat, PObject);
public:
SDPMediaFormat(
SDPMediaDescription & parent,
RTP_DataFrame::PayloadTypes payloadType,
const char * name = NULL
);
SDPMediaFormat(
SDPMediaDescription & parent,
const OpalMediaFormat & mediaFormat
);
virtual void PrintOn(ostream & str) const;
RTP_DataFrame::PayloadTypes GetPayloadType() const { return payloadType; }
const PCaselessString & GetEncodingName() const { return encodingName; }
void SetEncodingName(const PString & v) { encodingName = v; }
void SetFMTP(const PString & _fmtp);
PString GetFMTP() const;
unsigned GetClockRate(void) { return clockRate ; }
void SetClockRate(unsigned v) { clockRate = v; }
void SetParameters(const PString & v) { parameters = v; }
void SetRTCP_FB(const PString & v) { m_rtcp_fb = v; }
const OpalMediaFormat & GetMediaFormat() const { return m_mediaFormat; }
OpalMediaFormat & GetWritableMediaFormat() { return m_mediaFormat; }
bool PreEncode();
bool PostDecode(const OpalMediaFormatList & mediaFormats, unsigned bandwidth);
protected:
void SetMediaFormatOptions(OpalMediaFormat & mediaFormat) const;
OpalMediaFormat m_mediaFormat;
SDPMediaDescription & m_parent;
RTP_DataFrame::PayloadTypes payloadType;
unsigned clockRate;
PCaselessString encodingName;
PString parameters;
PString m_fmtp;
PString m_rtcp_fb; // RFC4585
};
typedef PList<SDPMediaFormat> SDPMediaFormatList;
/////////////////////////////////////////////////////////
class SDPMediaDescription : public PObject
{
PCLASSINFO(SDPMediaDescription, PObject);
public:
// The following enum is arranged so it can be used as a bit mask,
// e.g. GetDirection()&SendOnly indicates send is available
enum Direction {
Undefined = -1,
Inactive,
RecvOnly,
SendOnly,
SendRecv
};
SDPMediaDescription(
const OpalTransportAddress & address,
const OpalMediaType & mediaType
);
virtual bool PreEncode();
virtual void Encode(const OpalTransportAddress & commonAddr, ostream & str) const;
virtual bool PrintOn(ostream & strm, const PString & str) const;
virtual bool Decode(const PStringArray & tokens);
virtual bool Decode(char key, const PString & value);
virtual bool PostDecode(const OpalMediaFormatList & mediaFormats);
virtual SDPMediaDescription * CreateEmpty() const = 0;
// return the string used within SDP to identify this media type
virtual PString GetSDPMediaType() const = 0;
// return the string used within SDP to identify the transport used by this media
virtual PCaselessString GetSDPTransportType() const = 0;
virtual const SDPMediaFormatList & GetSDPMediaFormats() const
{ return formats; }
virtual OpalMediaFormatList GetMediaFormats() const;
virtual void AddSDPMediaFormat(SDPMediaFormat * sdpMediaFormat);
virtual void AddMediaFormat(const OpalMediaFormat & mediaFormat);
virtual void AddMediaFormats(const OpalMediaFormatList & mediaFormats, const OpalMediaType & mediaType);
virtual void SetAttribute(const PString & attr, const PString & value);
virtual void SetDirection(const Direction & d) { direction = d; }
virtual Direction GetDirection() const { return transportAddress.IsEmpty() ? Inactive : direction; }
virtual const OpalTransportAddress & GetTransportAddress() const { return transportAddress; }
virtual PBoolean SetTransportAddress(const OpalTransportAddress &t);
virtual WORD GetPort() const { return port; }
virtual OpalMediaType GetMediaType() const { return mediaType; }
virtual unsigned GetBandwidth(const PString & type) const { return bandwidth[type]; }
virtual void SetBandwidth(const PString & type, unsigned value) { bandwidth[type] = value; }
virtual const SDPBandwidth & GetBandwidth() const { return bandwidth; }
virtual void CreateSDPMediaFormats(const PStringArray & tokens);
virtual SDPMediaFormat * CreateSDPMediaFormat(const PString & portString) = 0;
virtual PString GetSDPPortList() const = 0;
virtual void ProcessMediaOptions(SDPMediaFormat & sdpFormat, const OpalMediaFormat & mediaFormat);
unsigned GetPTime () const { return ptime; }
unsigned GetMaxPTime () const { return maxptime; }
protected:
virtual SDPMediaFormat * FindFormat(PString & str) const;
OpalTransportAddress transportAddress;
Direction direction;
WORD port;
WORD portCount;
OpalMediaType mediaType;
SDPMediaFormatList formats;
SDPBandwidth bandwidth;
unsigned ptime;
unsigned maxptime;
};
PARRAY(SDPMediaDescriptionArray, SDPMediaDescription);
class SDPDummyMediaDescription : public SDPMediaDescription
{
PCLASSINFO(SDPDummyMediaDescription, SDPMediaDescription);
public:
SDPDummyMediaDescription(const OpalTransportAddress & address, const PStringArray & tokens);
virtual SDPMediaDescription * CreateEmpty() const;
virtual PString GetSDPMediaType() const;
virtual PCaselessString GetSDPTransportType() const;
virtual SDPMediaFormat * CreateSDPMediaFormat(const PString & portString);
virtual PString GetSDPPortList() const;
private:
PStringArray m_tokens;
};
/////////////////////////////////////////////////////////
//
// SDP media description for media classes using RTP/AVP transport (audio and video)
//
class SDPRTPAVPMediaDescription : public SDPMediaDescription
{
PCLASSINFO(SDPRTPAVPMediaDescription, SDPMediaDescription);
public:
SDPRTPAVPMediaDescription(const OpalTransportAddress & address, const OpalMediaType & mediaType);
virtual PCaselessString GetSDPTransportType() const;
virtual SDPMediaFormat * CreateSDPMediaFormat(const PString & portString);
virtual PString GetSDPPortList() const;
virtual bool PrintOn(ostream & str, const PString & connectString) const;
virtual void SetAttribute(const PString & attr, const PString & value);
};
/////////////////////////////////////////////////////////
//
// SDP media description for audio media
//
class SDPAudioMediaDescription : public SDPRTPAVPMediaDescription
{
PCLASSINFO(SDPAudioMediaDescription, SDPRTPAVPMediaDescription);
public:
SDPAudioMediaDescription(const OpalTransportAddress & address);
virtual SDPMediaDescription * CreateEmpty() const;
virtual PString GetSDPMediaType() const;
virtual bool PrintOn(ostream & str, const PString & connectString) const;
virtual void SetAttribute(const PString & attr, const PString & value);
bool GetOfferPTime() const { return m_offerPTime; }
void SetOfferPTime(bool value) { m_offerPTime = value; }
protected:
bool m_offerPTime;
};
/////////////////////////////////////////////////////////
//
// SDP media description for video media
//
class SDPVideoMediaDescription : public SDPRTPAVPMediaDescription
{
PCLASSINFO(SDPVideoMediaDescription, SDPRTPAVPMediaDescription);
public:
SDPVideoMediaDescription(const OpalTransportAddress & address);
virtual SDPMediaDescription * CreateEmpty() const;
virtual PString GetSDPMediaType() const;
virtual bool PreEncode();
virtual bool PrintOn(ostream & str, const PString & connectString) const;
void SetAttribute(const PString & attr, const PString & value);
};
/////////////////////////////////////////////////////////
//
// SDP media description for application media
//
class SDPApplicationMediaDescription : public SDPMediaDescription
{
PCLASSINFO(SDPApplicationMediaDescription, SDPMediaDescription);
public:
SDPApplicationMediaDescription(const OpalTransportAddress & address);
virtual PCaselessString GetSDPTransportType() const;
virtual SDPMediaFormat * CreateSDPMediaFormat(const PString & portString);
virtual SDPMediaDescription * CreateEmpty() const;
virtual PString GetSDPMediaType() const;
virtual PString GetSDPPortList() const;
};
/////////////////////////////////////////////////////////
class SDPSessionDescription : public PObject
{
PCLASSINFO(SDPSessionDescription, PObject);
public:
SDPSessionDescription(
time_t sessionId,
unsigned version,
const OpalTransportAddress & address
);
void PrintOn(ostream & strm) const;
PString Encode() const;
bool Decode(const PString & str, const OpalMediaFormatList & mediaFormats);
void SetSessionName(const PString & v);
PString GetSessionName() const { return sessionName; }
void SetUserName(const PString & v);
PString GetUserName() const { return ownerUsername; }
const SDPMediaDescriptionArray & GetMediaDescriptions() const { return mediaDescriptions; }
SDPMediaDescription * GetMediaDescriptionByType(const OpalMediaType & rtpMediaType) const;
SDPMediaDescription * GetMediaDescriptionByIndex(PINDEX i) const;
void AddMediaDescription(SDPMediaDescription * md) { mediaDescriptions.Append(md); }
void SetDirection(const SDPMediaDescription::Direction & d) { direction = d; }
SDPMediaDescription::Direction GetDirection(unsigned) const;
bool IsHold() const;
const OpalTransportAddress & GetDefaultConnectAddress() const { return defaultConnectAddress; }
void SetDefaultConnectAddress(
const OpalTransportAddress & address
);
time_t GetOwnerSessionId() const { return ownerSessionId; }
void SetOwnerSessionId(time_t value) { ownerSessionId = value; }
PINDEX GetOwnerVersion() const { return ownerVersion; }
void SetOwnerVersion(PINDEX value) { ownerVersion = value; }
OpalTransportAddress GetOwnerAddress() const { return ownerAddress; }
void SetOwnerAddress(OpalTransportAddress addr) { ownerAddress = addr; }
unsigned GetBandwidth(const PString & type) const { return bandwidth[type]; }
void SetBandwidth(const PString & type, unsigned value) { bandwidth[type] = value; }
OpalMediaFormatList GetMediaFormats() const;
static const PCaselessString & ConferenceTotalBandwidthType();
static const PCaselessString & ApplicationSpecificBandwidthType();
static const PCaselessString & TransportIndependentBandwidthType(); // RFC3890
protected:
void ParseOwner(const PString & str);
SDPMediaDescriptionArray mediaDescriptions;
SDPMediaDescription::Direction direction;
PINDEX protocolVersion;
PString sessionName;
PString ownerUsername;
time_t ownerSessionId;
unsigned ownerVersion;
OpalTransportAddress ownerAddress;
OpalTransportAddress defaultConnectAddress;
SDPBandwidth bandwidth;
};
/////////////////////////////////////////////////////////
#endif // OPAL_SIP
#endif // OPAL_SIP_SDP_H
// End of File ///////////////////////////////////////////////////////////////
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