/usr/include/sipxtapi/rtcp/RTPHeader.h is in libsipxtapi-dev 3.3.0~test17-2.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Copyright (C) 2006-2013 SIPez LLC. All rights reserved.
//
// Copyright (C) 2004-2006 SIPfoundry Inc.
// Licensed by SIPfoundry under the LGPL license.
//
// Copyright (C) 2004-2006 Pingtel Corp. All rights reserved.
// Licensed to SIPfoundry under a Contributor Agreement.
//
// $$
///////////////////////////////////////////////////////////////////////////////
// Border Guard
#ifndef _RTPHeader_h
#define _RTPHeader_h
#include "rtcp/RtcpConfig.h"
// Includes
#include "IRTPHeader.h"
// Defines
#define MAX_CSRCS 64
/**
*
* Class Name: CRTPHeader
*
* Inheritance: CBaseClass - Generic Base Class
*
*
* Interfaces: IRTPHeader - RTP Header Interface
*
* Description: The CRTPHeader Class coordinates the creation of RTP Headers
* given a well formed RTP packet received from the network.
* It also provides services for the extraction of information
* contained within an RTP packet header.
*
* Notes: CRTPHeader is derived from CBaseClass which provides basic
* Initialization and reference counting support.
*
*/
class CRTPHeader: public IRTPHeader // RTP Header Interface
{
// Public Methods
public:
/**
*
* Method Name: CRTPHeader() - Constructor
*
*
* Inputs: ssrc_t ulSSRC
* unsigned char* puchHeaderData
* unsigned long ulPacketLength - length of buffer content passed
*
* Outputs: None
*
* Returns: None
*
* Description: Performs routine CRTPHeader object initialization.
*
* Usage Notes: A CRTPHeader object shall be created by the CRTPSource with
* this constructor if allocated on the fly.
*
*
*/
CRTPHeader(ssrc_t ulSSRC = 0,
unsigned char *puchHeaderData=NULL,
unsigned long ulPacketLength=0);
/**
*
* Method Name: ~CRTPHeader() - Destructor
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: None
*
* Description: Shall deallocated and/or release all resources which was
* acquired over the course of runtime.
*
* Usage Notes:
*
*
*/
~CRTPHeader(void);
/**
*
* Method Name: ParseRTPHeader
*
*
* Inputs: unsigned char *puchRTPBuffer - Buffer containing RTP Packet
* unsigned long ulPacketLength - length of buffer content passed
*
* Outputs: None
*
* Returns: unsigned long
*
* Description: Parse an RTP network packet into an Report header.
* Some basic check will be performed to determine whether the
* packet is valid.
*
* Usage Notes: A buffer of sufficient size should be allocated and passed to
* this parsing method.
*
*
*/
unsigned long ParseRTPHeader(unsigned char *puchRTPBuffer,
unsigned long ulPacketLength=0);
/**
*
* Method Name: FormatRTPHeader
*
*
* Inputs: unsigned char *puchRTPBuffer - Buffer containing RTP Packet
* unsigned long ulPacketLength - length of buffer content passed
*
* Outputs: None
*
* Returns: unsigned long
*
* Description: Constructs an RTP Report header using information passed in
* the RTP character buffer. Some basic check will be performed
* to determine whether the packet is valid.
*
* Usage Notes: A buffer of sufficient size should be allocated and passed to
* this formatting method.
*
*
*/
unsigned long FormatRTPHeader(unsigned char *puchRTPBuffer,
unsigned long ulPacketLength=0);
/**
*
* Method Name: GetHeaderLength
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Returns the size of the RTP Header
*
* Description: Retrieves the size of the RTP Header that preceeds the payload.
*
* Usage Notes:
*
*
*/
unsigned long GetHeaderLength(void);
/**
*
* Method Name: GetVersion
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Returns the Version
*
* Description: Retrieves the Version attribute stored within the object.
*
* Usage Notes:
*
*
*/
unsigned long GetVersion(void);
/**
*
* Method Name: GetPadding
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Padding Flag
*
* Description: Returns the padding flag value from the RTP packet.
*
* Usage Notes:
*
*
*/
unsigned long GetPadding(void);
/**
*
* Method Name: GetExtension
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - - Header Extension Flag
*
* Description: Returns the header extension flag from the RTP packet.
*
* Usage Notes:
*
*
*/
unsigned long GetExtension(void);
/**
*
* Method Name: GetMarker
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Marker Flag
*
* Description: Returns the marker flag value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
unsigned long GetMarker(void);
/**
*
* Method Name: GetPayload
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Returns the Payload Type
*
* Description: Retrieves the payload type from this RTP report.
*
* Usage Notes:
*
*
*/
unsigned long GetPayload(void);
/**
*
* Method Name: GetSequenceNo
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: unsigned long - Packet Sequence Number
*
* Description: Returns the sequence number value from the RTP packet.
*
* Usage Notes:
*
*
*/
unsigned long GetSequenceNo(void);
/**
*
* Method Name: GetRTPTimestamp
*
*
* Inputs: None
*
* Outputs: rtpts_t *pulTimestamp - RTP Packet Timestamp
*
* Returns: void
*
* Description: Returns the timestamp value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
void GetRTPTimestamp(rtpts_t *pulTimestamp);
/**
*
* Method Name: GetRecvTimestamp
*
*
* Inputs: None
*
* Outputs: rtpts_t *pulTimestamp - Packet Receive Timestamp
*
* Returns: void
*
* Description: Returns the timestamp value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
void GetRecvTimestamp(rtpts_t *pulTimestamp);
/**
*
* Method Name: GetSSRC
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: ssrc_t - Packet Source Identifier
*
* Description: Returns the SSRC value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
ssrc_t GetSSRC(void);
/**
*
* Method Name: GetCSRC
*
*
* Inputs: bool bNBO - TRUE implies data should be represented in NBO format
*
* Outputs: ssrc_t *paulCSRC
* - Contributing Source Identifier(s) Array pointer
*
* Returns: unsigned long - Number of Contributing Source Identifier(s)
*
* Description: Returns the contributing source ID values from the RTP packet.
*
* Usage Notes:
*
*
*/
unsigned long GetCSRC(ssrc_t *paulCSRC, bool bNBO=FALSE);
/**
*
* Method Name: SetPayload
*
*
* Inputs: unsigned long - Payload Type
*
* Outputs: None
*
* Returns: None
*
* Description: Sets the payload type value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
void SetPayload(unsigned long ulPayload);
/**
*
* Method Name: SetSequenceNo
*
*
* Inputs: unsigned long - Packet Sequence Number
*
* Outputs: None
*
* Returns: None
*
* Description: Sets the sequence number value associated with the RTP packet.
*
* Usage Notes:
*
*
*/
void SetSequenceNo(unsigned long ulSequenceNo);
/**
*
* Method Name: SetRecvTimestamp
*
*
* Inputs: rtpts_t ulTimestamp - Packet Receive Timestamp
*
* Outputs: None
*
* Returns: void
*
* Description: Sets the receive timestamp values for the RTP packet.
*
* Usage Notes:
*
*
*/
void SetRecvTimestamp(rtpts_t ulTimestamp);
private: // Private Methods
/**
*
* Method Name: ResetContents
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: Resets the contetn of the RTP header object except for the
* version number and SSRC. This method allows a user to
* re-use RTP Header objects.
*
* Usage Notes: This method allows a user to re-use RTP Header objects.
*
*
*/
void ResetContents(void);
private: // Protected Data Members
/**
*
* Attribute Name: m_ulVersion
*
* Type: unsigned long
*
* Description: The protocol version of the RTP Report.
*
*/
unsigned long m_ulVersion;
/**
*
* Attribute Name: m_ulPadding
*
* Type: unsigned long
*
* Description: A flag identifying the use of padding within an RTP report.
*
*/
unsigned long m_ulPadding;
/**
*
* Attribute Name: m_ulMarker
*
* Type: unsigned long
*
* Description: A flag identifying the use of the marker bit within
* an RTP report.
*
*/
unsigned long m_ulMarker;
/**
*
* Attribute Name: m_ulExtension
*
* Type: unsigned long
*
* Description: A flag identifying the use of header extensions within
* an RTP report.
*
*/
unsigned long m_ulExtension;
/**
*
* Attribute Name: m_ulPayload
*
* Type: unsigned long
*
* Description: The RTP Payload type.
*
*/
unsigned long m_ulPayload;
/**
*
* Attribute Name: m_ulSequenceNo
*
* Type: unsigned long
*
* Description: The RTP Sequence Number.
*
*/
unsigned long m_ulSequenceNo;
/**
*
* Attribute Name: m_ulRTPTimestamp
*
* Type: rtpts_t
*
* Description: The RTP Timestamp; aka, the timestamp when the FE sent
* the packet
*
*/
rtpts_t m_ulRTPTimestamp;
/**
*
* Attribute Name: m_ulRecvTimestamp
*
* Type: rtpts_t
*
* Description: The RTP Recv Timestamp; aka, when the RTP pakcet was
* actually received on our system
*
*/
rtpts_t m_ulRecvTimestamp;
/**
*
* Attribute Name: m_ulSSRC
*
* Type: ssrc_t
*
* Description: This member shall store the SSRC ID of the
* associated RTP connection.
*
*/
ssrc_t m_ulSSRC;
/**
*
* Attribute Name: m_ulCSRCCount
*
* Type: unsigned long
*
* Description: The number of CSRCs contained with an RTP report.
*
*/
unsigned long m_ulCSRCCount;
/**
*
* Attribute Name: m_aulCSRC
*
* Type: unsigned long
*
* Description: The CSRCs contained with an RTP report.
*
*/
ssrc_t m_aulCSRC[MAX_CSRCS];
};
#endif
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