/usr/include/sipxtapi/rtcp/ReceiverReport.h is in libsipxtapi-dev 3.3.0~test17-1.
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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 _ReceiverReport_h
#define _ReceiverReport_h
#include "rtcp/RtcpConfig.h"
// Includes
#include "RTPHeader.h"
#include "RTCPHeader.h"
#include "IReceiverReport.h"
#include "IGetReceiverStatistics.h"
#include "ISetReceiverStatistics.h"
/**
*
* Class Name: CReceiverReport
*
* Inheritance: CRTCPHeader - RTCP Header Base Class
*
*
* Interfaces: IReceiverReport - RTCP Receiver Report Interface
*
* Description: The CReceiverReport Class coordinates the processing and
* generation of RTCP receiver reports associated with either an
* inbound or outbound RTP connection.
*
* Notes: CReceiverReport is derived from CBaseClass which provides
* basic Initialization and reference counting support.
*
*/
class CReceiverReport : public CBaseClass,
// Inherits CBaseClass implementation
public CRTCPHeader,
// Inherits the CRTCPHeader implementation
public IReceiverReport,
// Receiver Report Control Interface
public IGetReceiverStatistics,
// Get Receiver Statistics Interface
public ISetReceiverStatistics
// Set Receiver Statistics Interface
{
// Public Methods
public:
/**
*
* Method Name: CReceiverReport() - Constructor
*
*
* Inputs: ssrc_t ulSSRC - The the Identifier for this source
* uint32_t ulVersion -
* Version of the RFC Standard being followed
*
*
* Outputs: None
*
* Returns: None
*
* Description: Performs routine CReceiverReport object initialization.
*
* Usage Notes: A CReceiverReport object shall be created by the CRTCPRender
* with this constructor. The Sender shall be responsible for
* maintain receiver statistics related to an outbound RTP
* connection. The CReceiverReport shall pass the SSRC and
* version number to the CRTCPHeader at object construction.
*
*/
CReceiverReport(ssrc_t ulSSRC=0, unsigned long ulVersion=2);
/**
*
* Method Name: ~CReceiverReport() - 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:
*
*
*/
~CReceiverReport(void);
/**
*
* Method Name: SetRTPStatistics
*
*
* Inputs: IRTPHeader *piRTPHeader -
* RTP Packet Header received from RTP Source
*
* Outputs: None
*
* Returns: void
*
* Description: Takes the RTPHeader interface passed by the RTP Source object
* and updates Receiver Report statistics based upon its contents.
*
* Usage Notes:
*
*
*
*/
void SetRTPStatistics(IRTPHeader *piRTPHeader);
/**
*
* Method Name: SetLastRcvdSRTime
*
*
* Inputs: uint32_t aulNTPTimestamp[]
*
* Outputs: None
*
* Returns: void
*
* Description: Store the RTP timestamp from the last Sender Report received
* and store the time that this report was received on the system.
*
* Usage Notes:
*
*
*
*/
void SetLastRcvdSRTime(uint32_t aulNTPTimestamp[]);
/**
*
* Method Name: GetReceiverStatistics
*
*
* Inputs: None
*
* Outputs: uint32_t *pulFractionalLoss
* - Fractional Packet Loss
* uint32_t *pulCumulativeLoss
* - Cumulative Packet Loss
* uint32_t *pulHighestSequenceNo
* - Highest Sequence Number Received
* uint32_t *pulInterarrivalJitter
* - Interarrival Packet Variance
* uint32_t *pulSRTimestamp
* - Timestamp of last Sender Report received
* uint32_t *pulPacketDelay
* - 1/65536 granular Delay between last Sender
* Report Received and sending this report
*
* Returns: void
*
* Description: Returns a number of receiver report statistics associated with
* an inbound or outbound RTP connection.
*
* Usage Notes:
*
*
*
*/
void GetReceiverStatistics(uint32_t *pulFractionalLoss,
uint32_t *pulCumulativeLoss,
uint32_t *pulHighestSequenceNo,
uint32_t *pulInterarrivalJitter,
uint32_t *pulSRTimestamp,
uint32_t *pulPacketDelay);
/**
*
* Method Name: FormatReceiverReport
*
*
* Inputs: bool bSRPresent
* - Specifies whether a Sender Report is prepended
* unsigned long ulBufferSize
* - length of the buffer
*
* Outputs: unsigned char *puchReportBuffer
* - Buffer used to store the Receiver Report
*
* Returns: unsigned long
* - Returns the number of octet written into the buffer.
*
* Description: Constructs a Receiver report using the buffer passed in by the
* caller. A Receiver Report may be appended to the contents of
* a Sender Report or sent along in the case where no data was
* transmitted during the reporting period. The header flag set
* to True shall cause the Receiver Report to be appended while
* False will cause a header to be prepended to the Report
* information.
*
* A call to this method shall cause all period counts to be reset.
*
* Usage Notes: The header of the RTCP Report shall be formatted by delegating
* to the base class.
*
*
*
*/
unsigned long FormatReceiverReport(bool bSRPresent,
unsigned char *puchReportBuffer,
unsigned long ulBufferSize);
/**
*
* Method Name: ParseReceiverReport
*
*
* Inputs: boolean bHeader
* - Specifies whether a header is included
* unsigned char *puchReportBuffer
* - Buffer used to store the Receiver Report
*
* Outputs:
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: Processes a Receiver report using the buffer passed in by the
* caller. The header flag shall identify whether the report is
* prepended with a header.
*
* Usage Notes: The header of the RTCP Report, if provided, shall be parsed by
* delegating to the base class.
*
*
*/
unsigned long ParseReceiverReport(bool bHeader,
unsigned char *puchReportBuffer);
/**
*
* Method Name: GetSSRC
*
*
* Inputs: None
*
*
* Outputs: None
*
* Returns: ssrc_t - The SSRC of the Bye Report
*
* Description: Returns the SSRC Associated with the Bye Report.
*
* Usage Notes:
*
*
*/
ssrc_t GetSSRC(void);
/**
*
* Method Name: SetSSRC
*
*
* Inputs: ssrc_t ulSSRC - Source ID
*
* Outputs: None
*
* Returns: void
*
* Description: Stores the Source Identifier associated with an RTP connection.
*
* Usage Notes:
*
*
*
*/
virtual void SetSSRC(ssrc_t ulSSRC);
/**
*
* Macro Name: DECLARE_IBASE_M
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: None
*
* Description: This implements the IBaseClass functions used and exposed by
* derived classes.
*
* Usage Notes:
*
*
*/
DECLARE_IBASE_M
private: // Private Methods
/**
*
* Method Name: SetRemoteSSRC
*
*
* Inputs: IRTPHeader *piRTPHeader
* - Interface pointer to RTP Header services
*
* Outputs: None
*
* Returns: void
*
* Description: Stores the Source Identifier associated with an RTP source.
*
* Usage Notes:
*
*
*
*/
void SetRemoteSSRC(IRTPHeader *piRTPHeader);
/**
*
* Method Name: UpdateJitter
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall use the current and previous packet send and
* receive time to calculate interarrival jitter. The jitter
* calculated shall be used to update cumulative jitter and
* average jitter statistics.
*
* Usage Notes:
*
*/
void UpdateJitter(IRTPHeader *pIRTPHeader);
/**
*
* Method Name: UpdateSequence
*
* Inputs: IRTPHeader *piRTPHeader
* - RTP Header of a recently received RTP packet
*
* Outputs: None
*
* Returns: None
*
* Description: This method shall queue the RTP Header to a packet sequencing
* list and update the Highest Sequence Number statistic. It
* shall then evaluate the sequence list to determine whether
* any packets have been lost. Detection of one or more lost
* packets shall cause the UpdatePacketLoss() to be called with
* the number of packets lost.
*
* Usage Notes:
*
*/
void UpdateSequence(IRTPHeader *piRTPHeader);
/**
*
* Method Name: UpdateSequenceNumbers
*
* Inputs: IRTPHeader *piRTPHeader
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall calculate the highest extended sequence
* number. This value shall be a combination of the highest
* sequence number received (low 16 bits) and the number of
* sequence number cycles (high 16 bits).
*
* Usage Notes:
*
*/
void UpdateSequenceNumbers(ssrc_t ulSequenceNo);
/**
*
* Method Name: IncrementPacketCounters
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall increment both the period and cumulative
* packet counters.
*
* Usage Notes:
*
*/
void IncrementPacketCounters(void);
/**
*
* Method Name: UpdateLostPackets
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall update the packet loss counts for the period
* and the session as well as calculate the fractional packet
* loss for the period.
*
* Usage Notes:
*
*/
void UpdateLostPackets(void);
/**
*
* Method Name: LoadRemoteSSRC
*
* Inputs: ssrc_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall load the SSRC ID of the reportee into the
* payload buffer.
*
* Usage Notes:
*
*/
unsigned long LoadRemoteSSRC(ssrc_t *pulPayloadBuffer);
/**
*
* Method Name: LoadLossStatistics
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall load the fractional and cumulative loss
* statistics into the payload buffer.
*
* Usage Notes:
*
*/
unsigned long LoadLossStatistics(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: LoadExtendedSequence
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall load the extended highest sequence number.
* This is the number of times the 16 bit sequence number has
* wrapped shifted into the high 16 bits with the actual
* sequence number in the low 16 bits.
*
* Usage Notes:
*
*/
unsigned long LoadExtendedSequence(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: LoadJitter
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall load the RTP packet interarrival jitter
* statistic. This is an estimate of the statistical variance
* of the RTP data packet interarrival time, measured in
* timestamp units and expressed as an unsigned integer.
*
* Usage Notes:
*
*/
unsigned long LoadJitter(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: LoadReportTimes
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall load the timestamp of the last SR Report
* received from an SSRC in addition to loading the delay
* between our receiving this SR packet and responding with an
* RR packet.
*
* Usage Notes:
*
*/
unsigned long LoadReportTimes(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ExtractRemoteSSRC
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall store the SSRC ID of the reportee found in
* the payload buffer.
*
* Usage Notes:
*
*/
unsigned long ExtractRemoteSSRC(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ExtractLossStatistics
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall store the fractional and cumulative loss
* statistics from the payload buffer.
*
* Usage Notes:
*
*/
unsigned long ExtractLossStatistics(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ExtractExtendedSequence
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall extract the extended highest sequence
* number. This is the number of times the 16 bit sequence
* number has wrapped shifted into the high 16 bits with the
* actual sequence number in the low 16 bits.
*
* Usage Notes:
*
*/
unsigned long ExtractExtendedSequence(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ExtractJitter
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall extract the RTP packet interarrival jitter
* statistic. This is an estimate of the statistical variance
* of the RTP data packet interarrival time, measured in
* timestamp units and expressed as an unsigned integer.
*
* Usage Notes:
*
*/
unsigned long ExtractJitter(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ExtractReportTimes
*
* Inputs: uint32_t *pulPayloadBuffer
* - Payload buffer for loading data
*
* Outputs: None
*
* Returns: unsigned long
* - Returns the number of octets processed
*
* Description: This method shall extract the timestamp of the last SR Report
* received from an SSRC in addition to loading the delay between
* our receiving this SR packet and responding with an RR packet.
*
* Usage Notes:
*
*/
unsigned long ExtractReportTimes(uint32_t *pulPayloadBuffer);
/**
*
* Method Name: ResetPeriodCounts
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall reset all period counters and accumulators.
*
* Usage Notes:
*
*/
void ResetPeriodCounts(void);
/**
*
* Method Name: ResetStatistics
*
*
* Inputs: None
*
* Outputs: None
*
* Returns: void
*
* Description: This method shall reset all receiver report statistics. A
* reset shall occur when the SSRC ID is reset due to a
* collision with a participating source.
*
* Usage Notes:
*
*/
void ResetStatistics(void);
private: // Private Data Members
/**
*
* Attribute Name: m_csSynchronized
*
* Type: CRITICAL_SECTION
*
* Description: This is a critical section used to synchronize thread
* access to this class. This shall prevent several contending
* threads from executing interleaving linked list operations.
*
*/
CRITICAL_SECTION m_csSynchronized;
/**
*
* Attribute Name: m_ulRemoteSSRC
*
* Type: long
*
* Description: This member shall store the SSRC ID of the FE participant
* engaged in an RTP connection.
*
*/
ssrc_t m_ulRemoteSSRC;
/**
*
* Attribute Name: m_ulTotalPacketCount
*
* Type: long
*
* Description: This member shall store the number of packets received
* since the start of the inbound RTP connection.
*
*/
uint32_t m_ulTotalPacketCount;
/**
*
* Attribute Name: m_ulPeriodPacketCount
*
* Type: uint32_t
*
* Description: This member shall store the number of packets received
* over the reporting period.
*
*/
uint32_t m_ulPeriodPacketCount;
/**
*
* Attribute Name: m_ulPeriodPacketLoss
*
* Type: uint32_t
*
* Description: This member shall store the number of packets lost over
* the reporting period.
*
*/
uint32_t m_ulPeriodPacketLoss;
/**
*
* Attribute Name: m_ulFractionalLoss
*
* Type: uint32_t
*
* Description: This member shall store the Fractional Packet Loss express as
* m_ulPeriodPacketLoss / m_ulPeriodPacketCount + m_ulPeriodPacketLoss
*
*/
uint32_t m_ulFractionalLoss;
/**
*
* Attribute Name: m_ulCumulativeLoss
*
* Type: uint32_t
*
* Description: This member shall store the cumulative packet loss since
* the start of the inbound RTP connection.
*
*/
uint32_t m_ulCumulativeLoss;
/**
*
* Attribute Name: m_ulFirstSequenceNo
*
* Type: uint32_t
*
* Description: This member shall store the first sequence number received
* in an inbound RTP data packet.
*/
uint32_t m_ulFirstSequenceNo;
/**
*
* Attribute Name: m_ulLastSequenceNo
*
* Type: uint32_t
*
* Description: This member shall store the last sequence number received
* in an inbound RTP data packet.
*/
uint32_t m_ulLastSequenceNo;
/**
*
* Attribute Name: m_ulSequenceWraps
*
* Type: uint32_t
*
* Description: This member shall store the number of time the sequence
* number has wrapped given its 16 bit resolution.
*/
uint32_t m_ulSequenceWraps;
/**
*
* Attribute Name: m_ulHighestSequenceNo
*
* Type: uint32_t
*
* Description: This member shall store the highest sequence number
* received in an inbound RTP data packet in the low 16 bits
* and the corresponding count of sequence number cycles in
* the most significant 16 bits.
*/
uint32_t m_ulHighestSequenceNo;
/**
*
* Attribute Name: m_ulLastPeriodExpectedCount
*
* Type: uint32_t
*
* Description: This member shall store the number of packets expected for
* the last reporting period. This calculation is based on
* the highest and first sequence numbers acquired for that
* period.
*/
uint32_t m_ulLastPeriodExpectedCount;
/**
*
* Attribute Name: m_ulLastPeriodPacketCount
*
* Type: uint32_t
*
* Description: This member shall store the number of actual packets
* received over the previous reporting period.
*/
uint32_t m_ulLastPeriodPacketCount;
/**
*
* Attribute Name: m_ulLastPacketSendTime
*
* Type: uint32_t
*
* Description: This member shall store the RTP timestamp associated with
* the last RTP packet received.
*/
uint32_t m_ulLastPacketSendTime;
/**
*
* Attribute Name: m_ulLastPacketReceiveTime
*
* Type: uint32_t
*
* Description: This member shall store the receive timestamp associated
* with the last RTP packet received.
*/
uint32_t m_ulLastPacketReceiveTime;
/**
*
* Attribute Name: m_ulMeanJitter
*
* Type: uint32_t
*
* Description: This member shall store the mean interarrival jitter.
*/
uint32_t m_ulMeanJitter;
/**
*
* Attribute Name: m_ulLastSRTimestamp
*
* Type: uint32_t
*
* Description: This member shall store the timestamp for the last Send
* Report sent by the FE. This is the middle 32 bits of
* the NTP timestamp of the SR.
*/
uint32_t m_ulLastSRTimestamp;
/**
*
* Attribute Name: m_dLastSRRcvdTimestamp
*
* Type: double
*
* Description: This member shall store the timestamp for the last Send
* Report received from the FE. This is the system time when
* the packet was received.
*/
double m_dLastSRRcvdTimestamp;
/**
*
* Attribute Name: m_ulSRDelay
*
* Type: uint32_t
*
* Description: This member shall store the delay between the formation
* of this Receiver Report and the last Send Report received
* for this RTP connection.
*/
uint32_t m_ulSRDelay;
/**
*
* Attribute Name: m_ulCached....
*
* Type: uint32_t
*
* Description: These member shall store the statistics from the last
* reporting period so that they may be viewed by interested
* clients. This is only a temporary solution that should be
* addressed through creating a copy of the Receiver Report
* object after the reporting period has expired.
*/
uint32_t m_ulCachedFractionalLoss;
uint32_t m_ulCachedCumulativeLoss;
uint32_t m_ulCachedHighestSequenceNo;
uint32_t m_ulCachedMeanJitter;
uint32_t m_ulCachedLastSRTimestamp;
uint32_t m_ulCachedSRDelay;
int mTotalPackets;
int mTotalWarnings;
};
/**
*
* Method Name: GetSSRC
*
*
* Inputs: None
*
*
* Outputs: None
*
* Returns: ssrc_t - The SSRC of the Bye Report
*
* Description: Returns the SSRC Associated with the Bye Report.
*
* Usage Notes:
*
*
*/
inline ssrc_t CReceiverReport::GetSSRC(void)
{
return(CRTCPHeader::GetSSRC());
}
#endif
|