1616 lines
50 KiB
C
1616 lines
50 KiB
C
/****************************************************************************
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*
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* $Archive: S:/STURGEON/SRC/CALLCONT/VCS/confman.c_v $
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*
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* INTEL Corporation Prorietary Information
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*
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* This listing is supplied under the terms of a license agreement
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* with INTEL Corporation and may not be copied nor disclosed except
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* in accordance with the terms of that agreement.
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*
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* Copyright (c) 1993-1994 Intel Corporation.
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*
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* $Revision: 1.91 $
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* $Date: 04 Mar 1997 17:35:06 $
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* $Author: MANDREWS $
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*
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* Deliverable:
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*
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* Abstract:
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*
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*
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* Notes:
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*
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***************************************************************************/
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#include "precomp.h"
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#include "apierror.h"
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#include "incommon.h"
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#include "callcont.h"
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#include "q931.h"
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#include "ccmain.h"
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#include "confman.h"
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#include "ccutils.h"
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#include "chanman.h"
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#include "callman.h"
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static BOOL bConferenceInited = FALSE;
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static struct {
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PCONFERENCE pHead;
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LOCK Lock;
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} ConferenceTable;
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static struct {
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CC_HCONFERENCE hConference;
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LOCK Lock;
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} ConferenceHandle;
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CC_CONFERENCEID InvalidConferenceID;
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HRESULT InitConferenceManager()
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{
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ASSERT(bConferenceInited == FALSE);
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ConferenceTable.pHead = NULL;
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InitializeLock(&ConferenceTable.Lock);
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ConferenceHandle.hConference = CC_INVALID_HANDLE + 1;
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InitializeLock(&ConferenceHandle.Lock);
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memset(&InvalidConferenceID, 0, sizeof(InvalidConferenceID));
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bConferenceInited = TRUE;
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return CC_OK;
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}
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HRESULT DeInitConferenceManager()
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{
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PCONFERENCE pConference;
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PCONFERENCE pNextConference;
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if (bConferenceInited == FALSE)
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return CC_OK;
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pConference = ConferenceTable.pHead;
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while (pConference != NULL) {
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AcquireLock(&pConference->Lock);
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pNextConference = pConference->pNextInTable;
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FreeConference(pConference);
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pConference = pNextConference;
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}
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DeleteLock(&ConferenceHandle.Lock);
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DeleteLock(&ConferenceTable.Lock);
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bConferenceInited = FALSE;
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return CC_OK;
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}
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HRESULT _CreateLocalH245H2250MuxCapability(
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PCONFERENCE pConference)
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{
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HRESULT status;
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CC_TERMCAP TermCap;
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struct MultipointCapability_mediaDistributionCapability RXMediaDistributionCapability;
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struct MultipointCapability_mediaDistributionCapability TXMediaDistributionCapability;
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struct MultipointCapability_mediaDistributionCapability RXTXMediaDistributionCapability;
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ASSERT(pConference != NULL);
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if (pConference->pLocalH245H2250MuxCapability != NULL)
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H245FreeCap(pConference->pLocalH245H2250MuxCapability);
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TermCap.Dir = H245_CAPDIR_LCLRXTX;
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TermCap.DataType = H245_DATA_MUX;
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TermCap.ClientType = H245_CLIENT_MUX_H2250;
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TermCap.CapId = 0; // CapId = 0 is a special case for mux capabilities
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TermCap.Cap.H245Mux_H2250.bit_mask = 0;
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TermCap.Cap.H245Mux_H2250.maximumAudioDelayJitter = 60;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.multicastCapability = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.multiUniCastConference = FALSE;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability = &RXMediaDistributionCapability;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->next = NULL;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.bit_mask = 0;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.centralizedControl = FALSE;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.distributedControl = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.centralizedAudio = FALSE;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.distributedAudio = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.centralizedVideo = FALSE;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.distributedVideo = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.centralizedData = NULL;
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TermCap.Cap.H245Mux_H2250.receiveMultipointCapability.mediaDistributionCapability->value.distributedData = NULL;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.multicastCapability = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.multiUniCastConference = FALSE;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability = &TXMediaDistributionCapability;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->next = NULL;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.bit_mask = 0;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.centralizedControl = FALSE;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.distributedControl = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.centralizedAudio = FALSE;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.distributedAudio = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.centralizedVideo = FALSE;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.distributedVideo = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.centralizedData = NULL;
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TermCap.Cap.H245Mux_H2250.transmitMultipointCapability.mediaDistributionCapability->value.distributedData = NULL;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.multicastCapability = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.multiUniCastConference = FALSE;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability = &RXTXMediaDistributionCapability;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->next = NULL;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.bit_mask = 0;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.centralizedControl = FALSE;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.distributedControl = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.centralizedAudio = FALSE;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.distributedAudio = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.centralizedVideo = FALSE;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.distributedVideo = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.centralizedData = NULL;
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TermCap.Cap.H245Mux_H2250.rcvAndTrnsmtMltpntCpblty.mediaDistributionCapability->value.distributedData = NULL;
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TermCap.Cap.H245Mux_H2250.mcCapability.centralizedConferenceMC = FALSE;
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TermCap.Cap.H245Mux_H2250.mcCapability.decentralizedConferenceMC = (char)pConference->bMultipointCapable;
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TermCap.Cap.H245Mux_H2250.rtcpVideoControlCapability = FALSE;
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TermCap.Cap.H245Mux_H2250.mediaPacketizationCapability.bit_mask = 0;
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TermCap.Cap.H245Mux_H2250.mediaPacketizationCapability.h261aVideoPacketization = FALSE;
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status = H245CopyCap(&pConference->pLocalH245H2250MuxCapability,
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&TermCap);
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return status;
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}
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HRESULT _AddConferenceToTable( PCONFERENCE pConference)
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{
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PCONFERENCE pCurrent;
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ASSERT(pConference != NULL);
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ASSERT(pConference->hConference != CC_INVALID_HANDLE);
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ASSERT(pConference->bInTable == FALSE);
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AcquireLock(&ConferenceTable.Lock);
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// If a valid non-zero conference ID was specified, make sure
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// there's not a duplicate in the conference table
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if (!EqualConferenceIDs(&pConference->ConferenceID, &InvalidConferenceID)) {
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pCurrent = ConferenceTable.pHead;
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while (pCurrent != NULL) {
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if (EqualConferenceIDs(&pCurrent->ConferenceID,
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&pConference->ConferenceID)) {
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RelinquishLock(&ConferenceTable.Lock);
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return CC_DUPLICATE_CONFERENCE_ID;
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}
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pCurrent = pCurrent->pNextInTable;
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}
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}
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pConference->pNextInTable = ConferenceTable.pHead;
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pConference->pPrevInTable = NULL;
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if (ConferenceTable.pHead != NULL)
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ConferenceTable.pHead->pPrevInTable = pConference;
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ConferenceTable.pHead = pConference;
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pConference->bInTable = TRUE;
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RelinquishLock(&ConferenceTable.Lock);
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return CC_OK;
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}
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HRESULT _RemoveConferenceFromTable( PCONFERENCE pConference)
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{
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CC_HCONFERENCE hConference;
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BOOL bTimedOut;
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ASSERT(pConference != NULL);
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ASSERT(pConference->bInTable == TRUE);
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// Caller must have a lock on the conference object;
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// in order to avoid deadlock, we must:
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// 1. unlock the conference object,
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// 2. lock the ConferenceTable,
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// 3. locate the conference object in the ConferenceTable (note that
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// after step 2, the conference object may be deleted from the
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// ConferenceTable by another thread),
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// 4. lock the conference object (someone else may have the lock)
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// 5. remove the conference object from the ConferenceTable,
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// 6. unlock the ConferenceTable
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//
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// The caller can now safely unlock and destroy the conference object,
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// since no other thread will be able to find the object (its been
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// removed from the ConferenceTable), and therefore no other thread will
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// be able to lock it.
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// Save the conference handle; its the only way to look up
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// the conference object in the ConferenceTable. Note that we
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// can't use pConference to find the conference object, since
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// pConference may be free'd up, and another conference object
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// allocated at the same address
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hConference = pConference->hConference;
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// step 1
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RelinquishLock(&pConference->Lock);
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step2:
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// step 2
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AcquireLock(&ConferenceTable.Lock);
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// step 3
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pConference = ConferenceTable.pHead;
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while ((pConference != NULL) && (pConference->hConference != hConference))
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pConference = pConference->pNextInTable;
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if (pConference != NULL) {
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// step 4
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AcquireTimedLock(&pConference->Lock,10,&bTimedOut);
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if (bTimedOut) {
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RelinquishLock(&ConferenceTable.Lock);
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Sleep(0);
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goto step2;
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}
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// step 5
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if (pConference->pPrevInTable == NULL)
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ConferenceTable.pHead = pConference->pNextInTable;
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else
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pConference->pPrevInTable->pNextInTable = pConference->pNextInTable;
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if (pConference->pNextInTable != NULL)
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pConference->pNextInTable->pPrevInTable = pConference->pPrevInTable;
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pConference->pNextInTable = NULL;
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pConference->pPrevInTable = NULL;
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pConference->bInTable = FALSE;
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}
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// step 6
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RelinquishLock(&ConferenceTable.Lock);
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if (pConference == NULL)
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return CC_BAD_PARAM;
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else
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return CC_OK;
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}
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HRESULT _MakeConferenceHandle( PCC_HCONFERENCE phConference)
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{
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AcquireLock(&ConferenceHandle.Lock);
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*phConference = ConferenceHandle.hConference++;
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RelinquishLock(&ConferenceHandle.Lock);
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return CC_OK;
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}
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HRESULT AllocateTerminalNumber( PCONFERENCE pConference,
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H245_TERMINAL_LABEL_T *pH245TerminalLabel)
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{
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unsigned i, j;
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BYTE bMask;
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ASSERT(pConference != NULL);
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ASSERT(pH245TerminalLabel != NULL);
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ASSERT(pConference->ConferenceMode == MULTIPOINT_MODE);
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ASSERT(pConference->tsMultipointController == TS_TRUE);
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for (i = 0; i < NUM_TERMINAL_ALLOCATION_SLOTS; i++) {
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bMask = 0x01;
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if (pConference->TerminalNumberAllocation[i] != 0xFF) {
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for (j = 0; j < 8; j++) {
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if ((pConference->TerminalNumberAllocation[i] & bMask) == 0) {
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pConference->TerminalNumberAllocation[i] |= bMask;
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pH245TerminalLabel->mcuNumber = pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber;
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pH245TerminalLabel->terminalNumber = (TerminalNumber)((i * 8) + j + 1);
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return CC_OK;
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}
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bMask *= 2;
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}
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}
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}
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// No more terminal numbers are available for this conference
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return CC_BAD_PARAM;
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}
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|
||
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|
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HRESULT FreeTerminalNumber( PCONFERENCE pConference,
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BYTE bTerminalNumber)
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{
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unsigned i, j;
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BYTE bMask;
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ASSERT(pConference != NULL);
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if (bTerminalNumber > NUM_TERMINAL_ALLOCATION_SLOTS * 8)
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return CC_BAD_PARAM;
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--bTerminalNumber;
|
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i = bTerminalNumber / 8;
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j = bTerminalNumber % 8;
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bMask = (BYTE)(0x01 << j);
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if ((pConference->TerminalNumberAllocation[i] & bMask) == 0)
|
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return CC_BAD_PARAM;
|
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pConference->TerminalNumberAllocation[i] &= ~bMask;
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return CC_OK;
|
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}
|
||
|
||
|
||
|
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HRESULT AllocateChannelNumber( PCONFERENCE pConference,
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WORD *pwChannelNumber)
|
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{
|
||
unsigned i, j;
|
||
BYTE bMask;
|
||
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(pwChannelNumber != NULL);
|
||
|
||
for (i = 0; i < NUM_CHANNEL_ALLOCATION_SLOTS; i++) {
|
||
bMask = 0x01;
|
||
if (pConference->ChannelNumberAllocation[i] != 0xFF) {
|
||
for (j = 0; j < 8; j++) {
|
||
if ((pConference->ChannelNumberAllocation[i] & bMask) == 0) {
|
||
pConference->ChannelNumberAllocation[i] |= bMask;
|
||
*pwChannelNumber = (WORD) (((i * 8) + j) +
|
||
(pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber << 8));
|
||
return CC_OK;
|
||
}
|
||
bMask *= 2;
|
||
}
|
||
}
|
||
}
|
||
// No more channel numbers are available for this conference
|
||
*pwChannelNumber = 0;
|
||
return CC_BAD_PARAM;
|
||
}
|
||
|
||
|
||
|
||
HRESULT FreeChannelNumber( PCONFERENCE pConference,
|
||
WORD wChannelNumber)
|
||
{
|
||
unsigned i, j;
|
||
BYTE bMask;
|
||
|
||
ASSERT(pConference != NULL);
|
||
|
||
wChannelNumber &= 0xFF;
|
||
|
||
if ((wChannelNumber > NUM_CHANNEL_ALLOCATION_SLOTS * 8) ||
|
||
(wChannelNumber == 0))
|
||
return CC_BAD_PARAM;
|
||
|
||
i = wChannelNumber / 8;
|
||
j = wChannelNumber % 8;
|
||
bMask = (BYTE)(0x01 << j);
|
||
if ((pConference->ChannelNumberAllocation[i] & bMask) == 0)
|
||
return CC_BAD_PARAM;
|
||
pConference->ChannelNumberAllocation[i] &= ~bMask;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AllocAndLockConference( PCC_HCONFERENCE phConference,
|
||
PCC_CONFERENCEID pConferenceID,
|
||
BOOL bMultipointCapable,
|
||
BOOL bForceMultipointController,
|
||
PCC_TERMCAPLIST pLocalTermCapList,
|
||
PCC_TERMCAPDESCRIPTORS pLocalTermCapDescriptors,
|
||
PCC_VENDORINFO pVendorInfo,
|
||
PCC_OCTETSTRING pTerminalID,
|
||
DWORD_PTR dwConferenceToken,
|
||
CC_SESSIONTABLE_CONSTRUCTOR SessionTableConstructor,
|
||
CC_TERMCAP_CONSTRUCTOR TermCapConstructor,
|
||
CC_CONFERENCE_CALLBACK ConferenceCallback,
|
||
PPCONFERENCE ppConference)
|
||
|
||
{
|
||
WORD i;
|
||
HRESULT status;
|
||
TRISTATE tsMultipointController;
|
||
|
||
ASSERT(bConferenceInited == TRUE);
|
||
|
||
// all parameters should have been validated by the caller
|
||
ASSERT(phConference != NULL);
|
||
ASSERT(pLocalTermCapList != NULL);
|
||
#ifdef _DEBUG
|
||
if (pLocalTermCapList->wLength != 0)
|
||
ASSERT(pLocalTermCapList->pTermCapArray != NULL);
|
||
|
||
for (i = 0; i < pLocalTermCapList->wLength; i++)
|
||
ASSERT(pLocalTermCapList->pTermCapArray[i] != NULL);
|
||
|
||
if (pLocalTermCapDescriptors != NULL) {
|
||
ASSERT(pLocalTermCapDescriptors->pTermCapDescriptorArray != NULL);
|
||
for (i = 0; i < pLocalTermCapDescriptors->wLength; i++)
|
||
ASSERT(pLocalTermCapDescriptors->pTermCapDescriptorArray[i] != NULL);
|
||
}
|
||
#endif
|
||
ASSERT(pVendorInfo != NULL);
|
||
ASSERT(SessionTableConstructor != NULL);
|
||
ASSERT(TermCapConstructor != NULL);
|
||
ASSERT(ConferenceCallback != NULL);
|
||
ASSERT(ppConference != NULL);
|
||
|
||
// set phConference now, in case we encounter an error
|
||
*phConference = CC_INVALID_HANDLE;
|
||
|
||
*ppConference = (PCONFERENCE)MemAlloc(sizeof(CONFERENCE));
|
||
if (*ppConference == NULL)
|
||
return CC_NO_MEMORY;
|
||
|
||
if (bForceMultipointController == TRUE)
|
||
tsMultipointController = TS_TRUE;
|
||
else if (bMultipointCapable == TRUE)
|
||
tsMultipointController = TS_UNKNOWN;
|
||
else
|
||
tsMultipointController = TS_FALSE;
|
||
|
||
(*ppConference)->bInTable = FALSE;
|
||
(*ppConference)->LocalParticipantInfo.TerminalIDState = TERMINAL_ID_INVALID;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber = 1;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bTerminalNumber = 255;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString = NULL;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.wOctetStringLength = 0;
|
||
(*ppConference)->LocalParticipantInfo.pEnqueuedRequestsForTerminalID = NULL;
|
||
|
||
for (i = 0; i < NUM_TERMINAL_ALLOCATION_SLOTS; i++)
|
||
(*ppConference)->TerminalNumberAllocation[i] = 0;
|
||
// Channel 0 is reserved for the H.245 control channel
|
||
(*ppConference)->ChannelNumberAllocation[0] = 0x01;
|
||
for (i = 1; i < NUM_CHANNEL_ALLOCATION_SLOTS; i++)
|
||
(*ppConference)->ChannelNumberAllocation[i] = 0;
|
||
(*ppConference)->bMultipointCapable = bMultipointCapable;
|
||
(*ppConference)->bForceMC = bForceMultipointController;
|
||
(*ppConference)->SessionTableConstructor = SessionTableConstructor;
|
||
(*ppConference)->TermCapConstructor = TermCapConstructor;
|
||
(*ppConference)->dwConferenceToken = dwConferenceToken;
|
||
(*ppConference)->bDeferredDelete = FALSE;
|
||
(*ppConference)->bAutoAccept = FALSE; // ignored unless ConferenceCallback is NULL
|
||
(*ppConference)->LocalEndpointAttached = NEVER_ATTACHED;
|
||
(*ppConference)->ConferenceCallback = ConferenceCallback;
|
||
(*ppConference)->SaveConferenceCallback = ConferenceCallback;
|
||
(*ppConference)->bSessionTableInternallyConstructed = FALSE;
|
||
(*ppConference)->pSessionTable = NULL;
|
||
(*ppConference)->pConferenceH245H2250MuxCapability = NULL;
|
||
(*ppConference)->pConferenceTermCapList = NULL;
|
||
(*ppConference)->pConferenceTermCapDescriptors = NULL;
|
||
(*ppConference)->pLocalH245H2250MuxCapability = NULL;
|
||
(*ppConference)->pLocalH245TermCapList = NULL;
|
||
(*ppConference)->pLocalH245TermCapDescriptors = NULL;
|
||
(*ppConference)->pEnqueuedCalls = NULL;
|
||
(*ppConference)->pPlacedCalls = NULL;
|
||
(*ppConference)->pEstablishedCalls = NULL;
|
||
(*ppConference)->pVirtualCalls = NULL;
|
||
(*ppConference)->pChannels = NULL;
|
||
(*ppConference)->tsMultipointController = tsMultipointController;
|
||
(*ppConference)->tsMaster = TS_UNKNOWN;
|
||
(*ppConference)->pMultipointControllerAddr = NULL;
|
||
(*ppConference)->ConferenceMode = UNCONNECTED_MODE;
|
||
(*ppConference)->pVendorInfo = NULL;
|
||
(*ppConference)->pEnqueuedRequestModeCalls = NULL;
|
||
(*ppConference)->pNextInTable = NULL;
|
||
(*ppConference)->pPrevInTable = NULL;
|
||
|
||
if (pConferenceID == NULL) {
|
||
pConferenceID = &InvalidConferenceID;
|
||
(*ppConference)->bDynamicConferenceID = TRUE;
|
||
} else
|
||
(*ppConference)->bDynamicConferenceID = FALSE;
|
||
|
||
(*ppConference)->ConferenceID = *pConferenceID;
|
||
|
||
InitializeLock(&(*ppConference)->Lock);
|
||
AcquireLock(&(*ppConference)->Lock);
|
||
|
||
status = _MakeConferenceHandle(&(*ppConference)->hConference);
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return status;
|
||
}
|
||
|
||
if (pTerminalID != NULL) {
|
||
(*ppConference)->bDynamicTerminalID = FALSE;
|
||
(*ppConference)->LocalParticipantInfo.TerminalIDState = TERMINAL_ID_VALID;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.wOctetStringLength =
|
||
pTerminalID->wOctetStringLength;
|
||
(*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString =
|
||
(BYTE *)MemAlloc(pTerminalID->wOctetStringLength);
|
||
if ((*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString == NULL) {
|
||
FreeConference(*ppConference);
|
||
return CC_NO_MEMORY;
|
||
}
|
||
memcpy((*ppConference)->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString,
|
||
pTerminalID->pOctetString,
|
||
pTerminalID->wOctetStringLength);
|
||
} else {
|
||
(*ppConference)->bDynamicTerminalID = TRUE;
|
||
}
|
||
|
||
status = _CreateLocalH245H2250MuxCapability(*ppConference);
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return status;
|
||
}
|
||
|
||
// make a local copy of pTermCapList
|
||
status = CopyH245TermCapList(&(*ppConference)->pLocalH245TermCapList,
|
||
pLocalTermCapList);
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return CC_NO_MEMORY;
|
||
}
|
||
|
||
// create a new descriptor list if one was not supplied
|
||
if (pLocalTermCapDescriptors == NULL)
|
||
status = CreateH245DefaultTermCapDescriptors(&(*ppConference)->pLocalH245TermCapDescriptors,
|
||
(*ppConference)->pLocalH245TermCapList);
|
||
else
|
||
// make a local copy of pTermCapDescriptors
|
||
status = CopyH245TermCapDescriptors(&(*ppConference)->pLocalH245TermCapDescriptors,
|
||
pLocalTermCapDescriptors);
|
||
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return CC_NO_MEMORY;
|
||
}
|
||
|
||
status = CopyVendorInfo(&((*ppConference)->pVendorInfo), pVendorInfo);
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return status;
|
||
}
|
||
|
||
*phConference = (*ppConference)->hConference;
|
||
|
||
// add the conference to the conference table
|
||
status = _AddConferenceToTable(*ppConference);
|
||
if (status != CC_OK)
|
||
FreeConference(*ppConference);
|
||
|
||
// CreateConferenceTermCaps() must be called after _AddConferenceToTable(),
|
||
// since it will re-lock the conference object
|
||
if ((*ppConference)->tsMultipointController == TS_TRUE) {
|
||
status = CreateConferenceTermCaps(*ppConference, NULL);
|
||
if (status != CC_OK) {
|
||
FreeConference(*ppConference);
|
||
return status;
|
||
}
|
||
}
|
||
|
||
return status;
|
||
}
|
||
|
||
|
||
|
||
HRESULT RemoveCallFromConference( PCALL pCall,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pCall != NULL);
|
||
ASSERT(pConference != NULL);
|
||
// The call object must have been removed from the call table
|
||
// prior to removing it from the associated conference object.
|
||
// This assures us that no other thread is waiting for a lock on it.
|
||
ASSERT(pCall->bInTable == FALSE);
|
||
|
||
if (pCall->pPrev == NULL) {
|
||
// the call object is either at the head of the enqueued call list,
|
||
// the head of the placed call list, the head of the established
|
||
// call list, the head of the virtual call list, or is detached
|
||
// from the conference
|
||
if (pConference->pEnqueuedCalls == pCall)
|
||
// The call is on the enqueued call list
|
||
pConference->pEnqueuedCalls = pCall->pNext;
|
||
else if (pConference->pPlacedCalls == pCall)
|
||
// the call is on the placed call list
|
||
pConference->pPlacedCalls = pCall->pNext;
|
||
else if (pConference->pEstablishedCalls == pCall)
|
||
// the call is on the established call list
|
||
pConference->pEstablishedCalls = pCall->pNext;
|
||
else if (pConference->pVirtualCalls == pCall)
|
||
pConference->pVirtualCalls = pCall->pNext;
|
||
} else
|
||
pCall->pPrev->pNext = pCall->pNext;
|
||
|
||
if (pCall->pNext != NULL)
|
||
pCall->pNext->pPrev = pCall->pPrev;
|
||
|
||
pCall->pNext = NULL;
|
||
pCall->pPrev = NULL;
|
||
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT RemoveEnqueuedCallFromConference(
|
||
PCONFERENCE pConference,
|
||
PCC_HCALL phCall)
|
||
{
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(phCall != NULL);
|
||
|
||
if (pConference->pEnqueuedCalls == NULL) {
|
||
// No enqueued calls; this is not an error, since the caller can't tell
|
||
// whether there are any enqueued calls in this conference
|
||
*phCall = CC_INVALID_HANDLE;
|
||
return CC_OK;
|
||
}
|
||
|
||
// Move the call object from the enqueued call list to the placed
|
||
// call list.
|
||
|
||
// Note that another thread may have a lock on the enqueued call
|
||
// object, and may be trying to delete it; they will first need to
|
||
// lock the conference object (which this thread has locked), remove
|
||
// the call object from the enqueued call list, then free the call object.
|
||
// We are therefore safe in creating a pointer to the call object, although
|
||
// we may not examine or change any of its contents other than hCall (read-only),
|
||
// pNext and pPrev.
|
||
|
||
*phCall = pConference->pEnqueuedCalls->hCall;
|
||
pConference->pEnqueuedCalls = pConference->pEnqueuedCalls->pNext;
|
||
if (pConference->pEnqueuedCalls != NULL)
|
||
pConference->pEnqueuedCalls->pPrev = NULL;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT RemoveChannelFromConference(PCHANNEL pChannel,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pChannel != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
// The channel object must have been removed from the channel table
|
||
// prior to removing it from the associated conference object.
|
||
// This assures us that no other thread is waiting for a lock on it.
|
||
ASSERT(pChannel->bInTable == FALSE);
|
||
|
||
if (pChannel->pPrev == NULL) {
|
||
// the channel object is at the head of the channel list,
|
||
// or has been detached from the conference
|
||
if (pConference->pChannels == pChannel)
|
||
pConference->pChannels = pChannel->pNext;
|
||
} else
|
||
pChannel->pPrev->pNext = pChannel->pNext;
|
||
|
||
if (pChannel->pNext != NULL)
|
||
pChannel->pNext->pPrev = pChannel->pPrev;
|
||
|
||
pChannel->pNext = NULL;
|
||
pChannel->pPrev = NULL;
|
||
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AddEnqueuedCallToConference(PCALL pCall,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pCall != NULL);
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(EqualConferenceIDs(&pCall->ConferenceID, &InvalidConferenceID));
|
||
ASSERT(EqualConferenceIDs(&pConference->ConferenceID, &InvalidConferenceID));
|
||
ASSERT(pConference->pPlacedCalls != NULL);
|
||
// Call cannot already be associated with the conference
|
||
ASSERT(pCall->pNext == NULL);
|
||
ASSERT(pCall->pPrev == NULL);
|
||
|
||
pCall->hConference = pConference->hConference;
|
||
|
||
pCall->pNext = pConference->pEnqueuedCalls;
|
||
pCall->pPrev = NULL;
|
||
if (pConference->pEnqueuedCalls != NULL) {
|
||
ASSERT(pConference->pEnqueuedCalls->pPrev == NULL);
|
||
pConference->pEnqueuedCalls->pPrev = pCall;
|
||
}
|
||
pConference->pEnqueuedCalls = pCall;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AddPlacedCallToConference( PCALL pCall,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pCall != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
if (EqualConferenceIDs(&pConference->ConferenceID,
|
||
&InvalidConferenceID)) {
|
||
// If a conference ID has not been assigned, but there are
|
||
// placed or enqueued calls on the conference, the conference ID
|
||
// will be assigned by a callee when the first of these calls completes.
|
||
// Since pCall has an assigned conference ID (which will differ from
|
||
// the ID to be assigned to this conference), we cannot assign pCall
|
||
// to this conference.
|
||
ASSERT(pConference->pEstablishedCalls == NULL);
|
||
if (pConference->pPlacedCalls != NULL)
|
||
return CC_BAD_PARAM;
|
||
else
|
||
pConference->ConferenceID = pCall->ConferenceID;
|
||
} else
|
||
if (!EqualConferenceIDs(&pConference->ConferenceID,
|
||
&pCall->ConferenceID))
|
||
return CC_BAD_PARAM;
|
||
|
||
pCall->hConference = pConference->hConference;
|
||
|
||
// Unlink pCall from pConference, if necessary
|
||
if (pCall->pPrev == NULL) {
|
||
// pCall is at the head of either the enqueued call list,
|
||
// the placed call list, or the established call list, or
|
||
// is not yet associated with the conference object
|
||
if (pConference->pEnqueuedCalls == pCall)
|
||
pConference->pEnqueuedCalls = pCall->pNext;
|
||
else if (pConference->pPlacedCalls == pCall)
|
||
pConference->pPlacedCalls = pCall->pNext;
|
||
else if (pConference->pEstablishedCalls == pCall)
|
||
pConference->pEstablishedCalls = pCall->pNext;
|
||
} else
|
||
pCall->pPrev->pNext = pCall->pNext;
|
||
|
||
if (pCall->pNext != NULL)
|
||
pCall->pNext->pPrev = pCall->pPrev;
|
||
|
||
// Now link pCall into the placed call list
|
||
pCall->pNext = pConference->pPlacedCalls;
|
||
pCall->pPrev = NULL;
|
||
if (pConference->pPlacedCalls != NULL) {
|
||
ASSERT(pConference->pPlacedCalls->pPrev == NULL);
|
||
pConference->pPlacedCalls->pPrev = pCall;
|
||
}
|
||
pConference->pPlacedCalls = pCall;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AddEstablishedCallToConference(
|
||
PCALL pCall,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pCall != NULL);
|
||
ASSERT(pConference != NULL);
|
||
ASSERT((EqualConferenceIDs(&pConference->ConferenceID, &InvalidConferenceID)) ||
|
||
(EqualConferenceIDs(&pCall->ConferenceID, &pConference->ConferenceID)));
|
||
|
||
if (EqualConferenceIDs(&pConference->ConferenceID, &InvalidConferenceID)) {
|
||
// If a conference ID has not been assigned, but there are
|
||
// placed or enqueued calls on the conference, the conference ID
|
||
// will be assigned by a callee when the first of these calls completes.
|
||
// Since pCall has an assigned conference ID (which will differ from
|
||
// the ID to be assigned to this conference), we cannot assign pCall
|
||
// to this conference.
|
||
ASSERT(pConference->pEstablishedCalls == NULL);
|
||
pConference->ConferenceID = pCall->ConferenceID;
|
||
} else if (!EqualConferenceIDs(&pConference->ConferenceID, &pCall->ConferenceID))
|
||
return CC_BAD_PARAM;
|
||
|
||
pCall->hConference = pConference->hConference;
|
||
|
||
// Unlink pCall from pConference, if necessary
|
||
if (pCall->pPrev == NULL) {
|
||
// pCall is at the head of either the enqueued call list,
|
||
// the placed call list, or the established call list, or
|
||
// is not yet associated with the conference object
|
||
if (pConference->pEnqueuedCalls == pCall)
|
||
pConference->pEnqueuedCalls = pCall->pNext;
|
||
else if (pConference->pPlacedCalls == pCall)
|
||
pConference->pPlacedCalls = pCall->pNext;
|
||
else if (pConference->pEstablishedCalls == pCall)
|
||
pConference->pEstablishedCalls = pCall->pNext;
|
||
} else
|
||
pCall->pPrev->pNext = pCall->pNext;
|
||
|
||
if (pCall->pNext != NULL)
|
||
pCall->pNext->pPrev = pCall->pPrev;
|
||
|
||
// Now link pCall into the established call list
|
||
pCall->pNext = pConference->pEstablishedCalls;
|
||
pCall->pPrev = NULL;
|
||
if (pConference->pEstablishedCalls != NULL) {
|
||
ASSERT(pConference->pEstablishedCalls->pPrev == NULL);
|
||
pConference->pEstablishedCalls->pPrev = pCall;
|
||
}
|
||
pConference->pEstablishedCalls = pCall;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AddVirtualCallToConference( PCALL pCall,
|
||
PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pCall != NULL);
|
||
ASSERT(pConference != NULL);
|
||
// this is a bogus ASSERT --- ASSERT(pConference->ConferenceMode == MULTIPOINT_MODE);
|
||
ASSERT(pConference->tsMultipointController == TS_FALSE);
|
||
// Call cannot already be associated with the conference
|
||
ASSERT(pCall->pNext == NULL);
|
||
ASSERT(pCall->pPrev == NULL);
|
||
|
||
pCall->hConference = pConference->hConference;
|
||
|
||
pCall->pNext = pConference->pVirtualCalls;
|
||
pCall->pPrev = NULL;
|
||
if (pConference->pVirtualCalls != NULL) {
|
||
ASSERT(pConference->pVirtualCalls->pPrev == NULL);
|
||
pConference->pVirtualCalls->pPrev = pCall;
|
||
}
|
||
pConference->pVirtualCalls = pCall;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AddChannelToConference( PCHANNEL pChannel,
|
||
PCONFERENCE pConference)
|
||
{
|
||
PPCHANNEL ppChannel;
|
||
|
||
ASSERT(pChannel != NULL);
|
||
ASSERT((pChannel->bChannelType == TX_CHANNEL) ||
|
||
(pChannel->bChannelType == RX_CHANNEL) ||
|
||
(pChannel->bChannelType == TXRX_CHANNEL) ||
|
||
(pChannel->bChannelType == PROXY_CHANNEL));
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(pChannel->hConference == pConference->hConference);
|
||
ASSERT(pChannel->pNext == NULL);
|
||
ASSERT(pChannel->pPrev == NULL);
|
||
ASSERT(pConference->ConferenceMode != UNCONNECTED_MODE);
|
||
|
||
if (pConference->pEstablishedCalls == NULL)
|
||
// Can't open a channel unless we have at least one established call
|
||
return CC_BAD_PARAM;
|
||
|
||
ppChannel = &pConference->pChannels;
|
||
|
||
pChannel->pNext = *ppChannel;
|
||
pChannel->pPrev = NULL;
|
||
if (*ppChannel != NULL) {
|
||
ASSERT((*ppChannel)->pPrev == NULL);
|
||
(*ppChannel)->pPrev = pChannel;
|
||
}
|
||
*ppChannel = pChannel;
|
||
if (pConference->ConferenceMode == POINT_TO_POINT_MODE)
|
||
pChannel->bMultipointChannel = FALSE;
|
||
else
|
||
pChannel->bMultipointChannel = TRUE;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
// Caller must have a lock on the conference object
|
||
// There must be no calls on this conference object
|
||
// (previous calls must have been cleared by calling Hangup())
|
||
HRESULT FreeConference( PCONFERENCE pConference)
|
||
{
|
||
CC_HCONFERENCE hConference;
|
||
PCALL pVirtualCall;
|
||
WORD wNumCalls;
|
||
WORD i;
|
||
PCC_HCALL CallList;
|
||
WORD wNumChannels;
|
||
PCC_HCHANNEL ChannelList;
|
||
PCHANNEL pChannel;
|
||
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(pConference->pEnqueuedCalls == NULL);
|
||
ASSERT(pConference->pPlacedCalls == NULL);
|
||
ASSERT(pConference->pEstablishedCalls == NULL);
|
||
|
||
// caller must have a lock on the conference object,
|
||
// so there's no need to re-lock it
|
||
|
||
hConference = pConference->hConference;
|
||
|
||
if (pConference->bInTable == TRUE)
|
||
if (_RemoveConferenceFromTable(pConference) == CC_BAD_PARAM)
|
||
// the conference object was deleted by another thread,
|
||
// so just return CC_OK
|
||
return CC_OK;
|
||
|
||
if (pConference->pLocalH245H2250MuxCapability != NULL)
|
||
H245FreeCap(pConference->pLocalH245H2250MuxCapability);
|
||
|
||
// free up the LocalTermCapList elements
|
||
DestroyH245TermCapList(&pConference->pLocalH245TermCapList);
|
||
|
||
// free up the local terminal capability descriptors
|
||
DestroyH245TermCapDescriptors(&pConference->pLocalH245TermCapDescriptors);
|
||
|
||
if (pConference->pMultipointControllerAddr != NULL)
|
||
MemFree(pConference->pMultipointControllerAddr);
|
||
|
||
if (pConference->pVendorInfo != NULL)
|
||
FreeVendorInfo(pConference->pVendorInfo);
|
||
|
||
if (pConference->pSessionTable != NULL)
|
||
FreeConferenceSessionTable(pConference);
|
||
|
||
if (pConference->pConferenceH245H2250MuxCapability != NULL)
|
||
H245FreeCap(pConference->pConferenceH245H2250MuxCapability);
|
||
|
||
if ((pConference->pConferenceTermCapList != NULL) ||
|
||
(pConference->pConferenceTermCapDescriptors != NULL))
|
||
FreeConferenceTermCaps(pConference);
|
||
|
||
if (pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString != NULL)
|
||
{
|
||
MemFree(pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString);
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString = NULL;
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.wOctetStringLength = 0;
|
||
}
|
||
while (DequeueRequest(&pConference->LocalParticipantInfo.pEnqueuedRequestsForTerminalID, NULL) == CC_OK);
|
||
|
||
EnumerateCallsInConference(&wNumCalls, &CallList, pConference, VIRTUAL_CALL);
|
||
for (i = 0; i < wNumCalls; i++)
|
||
if (LockCall(CallList[i], &pVirtualCall) == CC_OK)
|
||
FreeCall(pVirtualCall);
|
||
if (CallList != NULL)
|
||
MemFree(CallList);
|
||
|
||
EnumerateChannelsInConference(&wNumChannels, &ChannelList, pConference, ALL_CHANNELS);
|
||
for (i = 0; i < wNumChannels; i++)
|
||
if (LockChannel(ChannelList[i], &pChannel) == CC_OK)
|
||
FreeChannel(pChannel);
|
||
if (ChannelList != NULL)
|
||
MemFree(ChannelList);
|
||
|
||
while (DequeueRequest(&pConference->pEnqueuedRequestModeCalls, NULL) == CC_OK);
|
||
|
||
// since the conference object has been removed from the ConferenceTable,
|
||
// no other thread will be able to find the conference object and obtain
|
||
// a lock, so its safe to unlock the conference object and delete it here
|
||
RelinquishLock(&pConference->Lock);
|
||
DeleteLock(&pConference->Lock);
|
||
MemFree(pConference);
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT LockConference( CC_HCONFERENCE hConference,
|
||
PPCONFERENCE ppConference)
|
||
{
|
||
BOOL bTimedOut;
|
||
|
||
ASSERT(hConference != CC_INVALID_HANDLE);
|
||
ASSERT(ppConference != NULL);
|
||
|
||
step1:
|
||
AcquireLock(&ConferenceTable.Lock);
|
||
|
||
*ppConference = ConferenceTable.pHead;
|
||
while ((*ppConference != NULL) && ((*ppConference)->hConference != hConference))
|
||
*ppConference = (*ppConference)->pNextInTable;
|
||
|
||
if (*ppConference != NULL) {
|
||
AcquireTimedLock(&(*ppConference)->Lock,10,&bTimedOut);
|
||
if (bTimedOut) {
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
Sleep(0);
|
||
goto step1;
|
||
}
|
||
}
|
||
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
|
||
if (*ppConference == NULL)
|
||
return CC_BAD_PARAM;
|
||
else
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT LockConferenceEx( CC_HCONFERENCE hConference,
|
||
PPCONFERENCE ppConference,
|
||
TRISTATE tsDeferredDelete)
|
||
{
|
||
BOOL bTimedOut;
|
||
|
||
ASSERT(hConference != CC_INVALID_HANDLE);
|
||
ASSERT(ppConference != NULL);
|
||
|
||
step1:
|
||
AcquireLock(&ConferenceTable.Lock);
|
||
|
||
*ppConference = ConferenceTable.pHead;
|
||
while ((*ppConference != NULL) && ((*ppConference)->hConference != hConference))
|
||
*ppConference = (*ppConference)->pNextInTable;
|
||
|
||
if (*ppConference != NULL) {
|
||
AcquireTimedLock(&(*ppConference)->Lock,10,&bTimedOut);
|
||
if (bTimedOut) {
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
Sleep(0);
|
||
goto step1;
|
||
}
|
||
if (tsDeferredDelete == TS_TRUE) {
|
||
if ((*ppConference)->bDeferredDelete != TRUE) {
|
||
RelinquishLock(&(*ppConference)->Lock);
|
||
*ppConference = NULL;
|
||
}
|
||
} else if (tsDeferredDelete == TS_FALSE) {
|
||
if ((*ppConference)->bDeferredDelete != FALSE) {
|
||
RelinquishLock(&(*ppConference)->Lock);
|
||
*ppConference = NULL;
|
||
}
|
||
}
|
||
}
|
||
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
|
||
if (*ppConference == NULL)
|
||
return CC_BAD_PARAM;
|
||
else
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT ValidateConference( CC_HCONFERENCE hConference)
|
||
{
|
||
PCONFERENCE pConference;
|
||
|
||
ASSERT(hConference != CC_INVALID_HANDLE);
|
||
|
||
AcquireLock(&ConferenceTable.Lock);
|
||
|
||
pConference = ConferenceTable.pHead;
|
||
while ((pConference != NULL) && (pConference->hConference != hConference))
|
||
pConference = pConference->pNextInTable;
|
||
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
|
||
if (pConference == NULL)
|
||
return CC_BAD_PARAM;
|
||
else
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT LockConferenceID( PCC_CONFERENCEID pConferenceID,
|
||
PPCONFERENCE ppConference)
|
||
{
|
||
BOOL bTimedOut;
|
||
|
||
ASSERT(!EqualConferenceIDs(pConferenceID, &InvalidConferenceID));
|
||
ASSERT(ppConference != NULL);
|
||
// There may be many conference objects in the table with unassigned
|
||
// conference IDs (ConferenceID = InvalidConferenceID). The caller may
|
||
// never ask us to search for an unassigned conference ID.
|
||
|
||
step1:
|
||
AcquireLock(&ConferenceTable.Lock);
|
||
|
||
*ppConference = ConferenceTable.pHead;
|
||
while ((*ppConference != NULL) &&
|
||
(!EqualConferenceIDs(&(*ppConference)->ConferenceID, pConferenceID)))
|
||
*ppConference = (*ppConference)->pNextInTable;
|
||
|
||
if (*ppConference != NULL) {
|
||
AcquireTimedLock(&(*ppConference)->Lock,10,&bTimedOut);
|
||
if (bTimedOut) {
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
Sleep(0);
|
||
goto step1;
|
||
}
|
||
}
|
||
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
|
||
if (*ppConference == NULL)
|
||
return CC_BAD_PARAM;
|
||
else
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT FindChannelInConference( WORD wChannel,
|
||
BOOL bLocalChannel,
|
||
BYTE bChannelType,
|
||
CC_HCALL hCall,
|
||
PCC_HCHANNEL phChannel,
|
||
PCONFERENCE pConference)
|
||
{
|
||
PCHANNEL pChannel;
|
||
WORD wChannelNumber;
|
||
|
||
ASSERT(wChannel != 0);
|
||
ASSERT(phChannel != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
*phChannel = CC_INVALID_HANDLE;
|
||
|
||
pChannel = pConference->pChannels;
|
||
while (pChannel != NULL) {
|
||
if (bLocalChannel)
|
||
wChannelNumber = pChannel->wLocalChannelNumber;
|
||
else
|
||
wChannelNumber = pChannel->wRemoteChannelNumber;
|
||
if ((wChannelNumber == wChannel) &&
|
||
((pChannel->bChannelType & bChannelType) != 0) &&
|
||
((hCall == CC_INVALID_HANDLE) ||
|
||
(pChannel->hCall == hCall)))
|
||
break;
|
||
pChannel = pChannel->pNext;
|
||
}
|
||
if (pChannel == NULL)
|
||
return CC_BAD_PARAM;
|
||
*phChannel = pChannel->hChannel;
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT EnumerateConferences( PWORD pwNumConferences,
|
||
CC_HCONFERENCE ConferenceList[])
|
||
{
|
||
WORD wIndexLimit;
|
||
PCONFERENCE pConference;
|
||
|
||
|
||
if ((*pwNumConferences != 0) && (ConferenceList == NULL))
|
||
return CC_BAD_PARAM;
|
||
if ((*pwNumConferences == 0) && (ConferenceList != NULL))
|
||
return CC_BAD_PARAM;
|
||
|
||
wIndexLimit = *pwNumConferences;
|
||
*pwNumConferences = 0;
|
||
|
||
AcquireLock(&ConferenceTable.Lock);
|
||
|
||
pConference = ConferenceTable.pHead;
|
||
while (pConference != NULL) {
|
||
if (*pwNumConferences < wIndexLimit)
|
||
ConferenceList[*pwNumConferences] = pConference->hConference;
|
||
(*pwNumConferences)++;
|
||
pConference = pConference->pNextInTable;
|
||
}
|
||
|
||
RelinquishLock(&ConferenceTable.Lock);
|
||
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT EnumerateCallsInConference( WORD *pwNumCalls,
|
||
PCC_HCALL pCallList[],
|
||
PCONFERENCE pConference,
|
||
BYTE bCallType)
|
||
{
|
||
WORD i;
|
||
PCALL pCall;
|
||
|
||
ASSERT(pwNumCalls != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
*pwNumCalls = 0;
|
||
|
||
if (bCallType & ENQUEUED_CALL) {
|
||
pCall = pConference->pEnqueuedCalls;
|
||
while (pCall != NULL) {
|
||
(*pwNumCalls)++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & PLACED_CALL) {
|
||
pCall = pConference->pPlacedCalls;
|
||
while (pCall != NULL) {
|
||
(*pwNumCalls)++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & ESTABLISHED_CALL) {
|
||
pCall = pConference->pEstablishedCalls;
|
||
while (pCall != NULL) {
|
||
(*pwNumCalls)++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & VIRTUAL_CALL) {
|
||
pCall = pConference->pVirtualCalls;
|
||
while (pCall != NULL) {
|
||
(*pwNumCalls)++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (pCallList == NULL)
|
||
return CC_OK;
|
||
|
||
if (*pwNumCalls == 0) {
|
||
*pCallList = NULL;
|
||
return CC_OK;
|
||
}
|
||
|
||
*pCallList = (PCC_HCALL)MemAlloc(sizeof(CC_HCALL) * (*pwNumCalls));
|
||
if (*pCallList == NULL)
|
||
return CC_NO_MEMORY;
|
||
|
||
i = 0;
|
||
|
||
if (bCallType & ENQUEUED_CALL) {
|
||
pCall = pConference->pEnqueuedCalls;
|
||
while (pCall != NULL) {
|
||
(*pCallList)[i] = pCall->hCall;
|
||
i++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & PLACED_CALL) {
|
||
pCall = pConference->pPlacedCalls;
|
||
while (pCall != NULL) {
|
||
(*pCallList)[i] = pCall->hCall;
|
||
i++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & ESTABLISHED_CALL) {
|
||
pCall = pConference->pEstablishedCalls;
|
||
while (pCall != NULL) {
|
||
(*pCallList)[i] = pCall->hCall;
|
||
i++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
|
||
if (bCallType & VIRTUAL_CALL) {
|
||
pCall = pConference->pVirtualCalls;
|
||
while (pCall != NULL) {
|
||
(*pCallList)[i] = pCall->hCall;
|
||
i++;
|
||
pCall = pCall->pNext;
|
||
}
|
||
}
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT EnumerateChannelsInConference(
|
||
WORD *pwNumChannels,
|
||
PCC_HCHANNEL pChannelList[],
|
||
PCONFERENCE pConference,
|
||
BYTE bChannelType)
|
||
{
|
||
WORD i;
|
||
PCHANNEL pChannel;
|
||
|
||
ASSERT(pwNumChannels != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
*pwNumChannels = 0;
|
||
|
||
pChannel = pConference->pChannels;
|
||
|
||
while (pChannel != NULL) {
|
||
if (pChannel->bChannelType & bChannelType)
|
||
(*pwNumChannels)++;
|
||
pChannel = pChannel->pNext;
|
||
}
|
||
|
||
if (pChannelList == NULL)
|
||
return CC_OK;
|
||
|
||
if (*pwNumChannels == 0) {
|
||
*pChannelList = NULL;
|
||
return CC_OK;
|
||
}
|
||
|
||
*pChannelList = (PCC_HCHANNEL)MemAlloc(sizeof(CC_HCHANNEL) * (*pwNumChannels));
|
||
if (*pChannelList == NULL)
|
||
return CC_NO_MEMORY;
|
||
|
||
i = 0;
|
||
pChannel = pConference->pChannels;
|
||
|
||
while (pChannel != NULL) {
|
||
if (pChannel->bChannelType & bChannelType) {
|
||
(*pChannelList)[i] = pChannel->hChannel;
|
||
i++;
|
||
}
|
||
pChannel = pChannel->pNext;
|
||
}
|
||
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT EnumerateTerminalLabelsInConference(
|
||
WORD *pwNumTerminalLabels,
|
||
H245_TERMINAL_LABEL_T *pH245TerminalLabelList[],
|
||
PCONFERENCE pConference)
|
||
{
|
||
WORD i, j;
|
||
WORD wIndex;
|
||
BYTE bMask;
|
||
|
||
ASSERT(pwNumTerminalLabels != NULL);
|
||
ASSERT(pConference != NULL);
|
||
|
||
// First count the number of known terminals
|
||
*pwNumTerminalLabels = 0;
|
||
for (i = 0; i < NUM_TERMINAL_ALLOCATION_SLOTS; i++) {
|
||
if (pConference->TerminalNumberAllocation[i] != 0) {
|
||
bMask = 0x01;
|
||
for (j = 0; j < 8; j++) {
|
||
if ((pConference->TerminalNumberAllocation[i] & bMask) != 0)
|
||
(*pwNumTerminalLabels)++;
|
||
bMask *= 2;
|
||
}
|
||
}
|
||
}
|
||
if (pConference->LocalEndpointAttached == ATTACHED)
|
||
(*pwNumTerminalLabels)++;
|
||
|
||
if (pH245TerminalLabelList == NULL)
|
||
return CC_OK;
|
||
|
||
if (*pwNumTerminalLabels == 0)
|
||
*pH245TerminalLabelList = NULL;
|
||
|
||
*pH245TerminalLabelList = (H245_TERMINAL_LABEL_T *)MemAlloc(sizeof(H245_TERMINAL_LABEL_T) *
|
||
(*pwNumTerminalLabels));
|
||
if (*pH245TerminalLabelList == NULL)
|
||
return CC_NO_MEMORY;
|
||
|
||
wIndex = 0;
|
||
for (i = 0; i < NUM_TERMINAL_ALLOCATION_SLOTS; i++) {
|
||
if (pConference->TerminalNumberAllocation[i] != 0) {
|
||
bMask = 0x01;
|
||
for (j = 0; j < 8; j++) {
|
||
if ((pConference->TerminalNumberAllocation[i] & bMask) != 0) {
|
||
(*pH245TerminalLabelList)[wIndex].mcuNumber = pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber;
|
||
(*pH245TerminalLabelList)[wIndex].terminalNumber = (TerminalNumber) ((i * 8) + j + 1);
|
||
wIndex++;
|
||
}
|
||
bMask *= 2;
|
||
}
|
||
}
|
||
}
|
||
if (pConference->LocalEndpointAttached == ATTACHED) {
|
||
(*pH245TerminalLabelList)[wIndex].mcuNumber = pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber;
|
||
(*pH245TerminalLabelList)[wIndex].terminalNumber = 0;
|
||
}
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT UnlockConference( PCONFERENCE pConference)
|
||
{
|
||
ASSERT(pConference != NULL);
|
||
|
||
RelinquishLock(&pConference->Lock);
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT AsynchronousDestroyConference(
|
||
CC_HCONFERENCE hConference,
|
||
BOOL bAutoAccept)
|
||
{
|
||
HRESULT status;
|
||
PCONFERENCE pConference;
|
||
WORD wNumCalls;
|
||
WORD wNumChannels;
|
||
WORD i;
|
||
PCHANNEL pChannel;
|
||
PCC_HCHANNEL ChannelList;
|
||
|
||
status = LockConference(hConference, &pConference);
|
||
if (status != CC_OK)
|
||
return status;
|
||
|
||
status = EnumerateCallsInConference(&wNumCalls, NULL, pConference, REAL_CALLS);
|
||
if (status != CC_OK) {
|
||
UnlockConference(pConference);
|
||
return status;
|
||
}
|
||
|
||
// This is an illegal call if:
|
||
// 1. The local endpoint is currently attached;
|
||
// 2. The local endpoint has never been attached, but is in the
|
||
// process of placing a call
|
||
if ((pConference->LocalEndpointAttached == ATTACHED) ||
|
||
((pConference->LocalEndpointAttached == NEVER_ATTACHED) &&
|
||
(wNumCalls > 0))) {
|
||
UnlockConference(pConference);
|
||
return CC_BAD_PARAM;
|
||
}
|
||
|
||
pConference->ConferenceCallback = NULL;
|
||
|
||
// can't destroy a conference if there are active calls
|
||
if (wNumCalls != 0) {
|
||
pConference->bDeferredDelete = TRUE;
|
||
pConference->bAutoAccept = bAutoAccept;
|
||
UnlockConference(pConference);
|
||
return CC_OK;
|
||
}
|
||
|
||
status = EnumerateChannelsInConference(&wNumChannels,
|
||
&ChannelList,
|
||
pConference,
|
||
ALL_CHANNELS);
|
||
if (status != CC_OK) {
|
||
UnlockConference(pConference);
|
||
return status;
|
||
}
|
||
|
||
// free all the channels
|
||
for (i = 0; i < wNumChannels; i++) {
|
||
if (LockChannel(ChannelList[i], &pChannel) == CC_OK)
|
||
// Notice that since we're going to hangup, we don't need to
|
||
// close any channels
|
||
FreeChannel(pChannel);
|
||
}
|
||
|
||
if (ChannelList != NULL)
|
||
MemFree(ChannelList);
|
||
|
||
FreeConference(pConference);
|
||
|
||
return CC_OK;
|
||
}
|
||
|
||
|
||
|
||
HRESULT FindPeerParticipantInfo( H245_TERMINAL_LABEL_T H245TerminalLabel,
|
||
PCONFERENCE pConference,
|
||
BYTE bCallType,
|
||
PCALL *ppCall)
|
||
{
|
||
WORD wNumCalls;
|
||
PCC_HCALL CallList;
|
||
WORD i;
|
||
HRESULT status;
|
||
|
||
ASSERT(pConference != NULL);
|
||
ASSERT(ppCall != NULL);
|
||
|
||
status = EnumerateCallsInConference(&wNumCalls,
|
||
&CallList,
|
||
pConference,
|
||
bCallType);
|
||
if (status != CC_OK)
|
||
return status;
|
||
|
||
for (i = 0; i < wNumCalls; i++) {
|
||
if (LockCall(CallList[i], ppCall) == CC_OK) {
|
||
if ((*ppCall)->pPeerParticipantInfo != NULL)
|
||
if (((*ppCall)->pPeerParticipantInfo->ParticipantInfo.TerminalLabel.bMCUNumber ==
|
||
H245TerminalLabel.mcuNumber) &&
|
||
((*ppCall)->pPeerParticipantInfo->ParticipantInfo.TerminalLabel.bTerminalNumber ==
|
||
H245TerminalLabel.terminalNumber)) {
|
||
MemFree(CallList);
|
||
return CC_OK;
|
||
}
|
||
UnlockCall(*ppCall);
|
||
}
|
||
}
|
||
if (CallList != NULL)
|
||
MemFree(CallList);
|
||
*ppCall = NULL;
|
||
return CC_BAD_PARAM;
|
||
}
|
||
|
||
|
||
|
||
HRESULT ReInitializeConference( PCONFERENCE pConference)
|
||
{
|
||
PCALL pCall;
|
||
WORD wNumCalls;
|
||
WORD i;
|
||
PCC_HCALL CallList;
|
||
PCHANNEL pChannel;
|
||
WORD wNumChannels;
|
||
PCC_HCHANNEL ChannelList;
|
||
HRESULT status;
|
||
|
||
ASSERT(pConference != NULL);
|
||
|
||
if (pConference->bDynamicConferenceID == TRUE)
|
||
pConference->ConferenceID = InvalidConferenceID;
|
||
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bMCUNumber = 1;
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalLabel.bTerminalNumber = 255;
|
||
if (pConference->bDynamicTerminalID == TRUE) {
|
||
pConference->LocalParticipantInfo.TerminalIDState = TERMINAL_ID_INVALID;
|
||
if(pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString != NULL)
|
||
{
|
||
MemFree(pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString);
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.pOctetString = NULL;
|
||
pConference->LocalParticipantInfo.ParticipantInfo.TerminalID.wOctetStringLength = 0;
|
||
}
|
||
}
|
||
while (DequeueRequest(&pConference->LocalParticipantInfo.pEnqueuedRequestsForTerminalID, NULL) == CC_OK);
|
||
for (i = 0; i < NUM_TERMINAL_ALLOCATION_SLOTS; i++)
|
||
pConference->TerminalNumberAllocation[i] = 0;
|
||
// Channel 0 is reserved for the H.245 control channel
|
||
pConference->ChannelNumberAllocation[0] = 0x01;
|
||
for (i = 1; i < NUM_CHANNEL_ALLOCATION_SLOTS; i++)
|
||
pConference->ChannelNumberAllocation[i] = 0;
|
||
pConference->bDeferredDelete = FALSE;
|
||
pConference->bAutoAccept = FALSE; // ignored unless ConferenceCallback is NULL
|
||
pConference->LocalEndpointAttached = NEVER_ATTACHED;
|
||
if (pConference->pSessionTable != NULL)
|
||
FreeConferenceSessionTable(pConference);
|
||
_CreateLocalH245H2250MuxCapability(pConference);
|
||
if (pConference->pConferenceH245H2250MuxCapability != NULL) {
|
||
H245FreeCap(pConference->pConferenceH245H2250MuxCapability);
|
||
pConference->pConferenceH245H2250MuxCapability = NULL;
|
||
}
|
||
if ((pConference->pConferenceTermCapList != NULL) ||
|
||
(pConference->pConferenceTermCapDescriptors != NULL))
|
||
FreeConferenceTermCaps(pConference);
|
||
pConference->bSessionTableInternallyConstructed = FALSE;
|
||
pConference->ConferenceCallback = pConference->SaveConferenceCallback;
|
||
|
||
EnumerateCallsInConference(&wNumCalls, &CallList, pConference, ALL_CALLS);
|
||
for (i = 0; i < wNumCalls; i++)
|
||
if (LockCall(CallList[i], &pCall) == CC_OK)
|
||
FreeCall(pCall);
|
||
if (CallList != NULL)
|
||
MemFree(CallList);
|
||
|
||
EnumerateChannelsInConference(&wNumChannels, &ChannelList, pConference, ALL_CHANNELS);
|
||
for (i = 0; i < wNumChannels; i++)
|
||
if (LockChannel(ChannelList[i], &pChannel) == CC_OK)
|
||
FreeChannel(pChannel);
|
||
if (ChannelList != NULL)
|
||
MemFree(ChannelList);
|
||
|
||
if (pConference->bForceMC == TRUE)
|
||
pConference->tsMultipointController = TS_TRUE;
|
||
else if (pConference->bMultipointCapable == TRUE)
|
||
pConference->tsMultipointController = TS_UNKNOWN;
|
||
else
|
||
pConference->tsMultipointController = TS_FALSE;
|
||
pConference->tsMaster = TS_UNKNOWN;
|
||
pConference->ConferenceMode = UNCONNECTED_MODE;
|
||
if (pConference->pMultipointControllerAddr != NULL) {
|
||
MemFree(pConference->pMultipointControllerAddr);
|
||
pConference->pMultipointControllerAddr = NULL;
|
||
}
|
||
|
||
while (DequeueRequest(&pConference->pEnqueuedRequestModeCalls, NULL) == CC_OK);
|
||
|
||
if (pConference->tsMultipointController == TS_TRUE)
|
||
status = CreateConferenceTermCaps(pConference, NULL);
|
||
else
|
||
status = CC_OK;
|
||
|
||
return status;
|
||
}
|
||
|