windows-nt/Source/XPSP1/NT/multimedia/directx/dplay/dvoice/dxvoice/vnametbl.cpp

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2020-09-26 03:20:57 -05:00
/*==========================================================================
*
* Copyright (C) 1999 - 1999 Microsoft Corporation. All Rights Reserved.
*
* File: vnametbl.h
* Content: Voice Player Name Table
*
* History:
* Date By Reason
* ==== == ======
* 03/26/00 rodtoll Created
* 06/02/00 rodtoll Updated so host migration algorithm returns ID as well as order ID
* 07/01/2000 rodtoll Bug #38280 - DVMSGID_DELETEVOICEPLAYER messages are being sent in non-peer to peer sessions
* Nametable will now only unravel with messages if session is peer to peer.
* 07/09/2000 rodtoll Added signature bytes
***************************************************************************/
#include "dxvoicepch.h"
#undef DPF_SUBCOMP
#define DPF_SUBCOMP DN_SUBCOMP_VOICE
// DeInitialize
//
// Cleanup the name table
#undef DPF_MODNAME
#define DPF_MODNAME "CVoiceNameTable::DeInitialize"
HRESULT CVoiceNameTable::DeInitialize(BOOL fUnRavel, PVOID pvContext, LPDVMESSAGEHANDLER pvMessageHandler )
{
CVoicePlayer *pPlayer;
DVID dvID;
PVOID pvPlayerContext;
DVMSG_DELETEVOICEPLAYER dvMsgDelete;
if( !m_fInitialized )
return DV_OK;
Lock();
while( !m_nameTable.IsEmpty() )
{
if( m_nameTable.RemoveLastEntry( &pPlayer ) )
{
// Mark it as disconnected
pPlayer->SetDisconnected();
dvID = pPlayer->GetPlayerID();
pvPlayerContext = pPlayer->GetContext();
// Release the player record reference we had
pPlayer->Release();
if( pvMessageHandler != NULL )
{
if( fUnRavel )
{
// Drop locks to call up to user
UnLock();
dvMsgDelete.dvidPlayer = dvID;
dvMsgDelete.dwSize = sizeof( DVMSG_DELETEVOICEPLAYER );
dvMsgDelete.pvPlayerContext = pvPlayerContext;
(*pvMessageHandler)( pvContext, DVMSGID_DELETEVOICEPLAYER, &dvMsgDelete );
Lock();
}
}
}
}
UnLock();
m_nameTable.Deinitialize();
m_fInitialized = FALSE;
DNDeleteCriticalSection( &m_csTableLock );
return DV_OK;
}
#undef DPF_MODNAME
#define DPF_MODNAME "CVoiceNameTable::GetLowestHostOrderID"
DWORD CVoiceNameTable::GetLowestHostOrderID(DVID *pdvidHost)
{
DWORD dwLowestID = DVPROTOCOL_HOSTORDER_INVALID;
Lock();
DWORD dwNumTableEntries = 1 << m_nameTable.m_iHashBitDepth;
CBilink *blLink;
CClassHashEntry<CVoicePlayer,DVID> *pEntry;
// Search the list, finding the lowest ID
for( DWORD dwIndex = 0; dwIndex < dwNumTableEntries; dwIndex++ )
{
blLink = &m_nameTable.m_pHashEntries[ dwIndex ];
while ( blLink->GetNext() != &m_nameTable.m_pHashEntries[ dwIndex ] )
{
pEntry = CClassHashEntry<CVoicePlayer,DVID>::EntryFromBilink( blLink->GetNext() );
DPFX(DPFPREP, DVF_HOSTMIGRATE_DEBUG_LEVEL, "HOST MIGRATION: ID [0x%x] ORDERID [0x%x]", pEntry->m_pItem->GetPlayerID(), pEntry->m_pItem->GetHostOrder() );
if( pEntry->m_pItem->GetHostOrder() < dwLowestID )
{
DPFX(DPFPREP, DVF_HOSTMIGRATE_DEBUG_LEVEL, "HOST MIGRATION: ID [0x%x] IS CURRENT CANDIDATE", pEntry->m_pItem->GetPlayerID() );
dwLowestID = pEntry->m_pItem->GetHostOrder();
*pdvidHost = pEntry->m_pItem->GetPlayerID();
}
blLink = blLink->GetNext();
}
}
UnLock();
return dwLowestID;
}