Leaked source code of windows server 2003
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/*==========================================================================
*
* Copyright (C) 1999 Microsoft Corporation. All Rights Reserved.
*
* File: dvclient.c
* Content: Implements functions for the DirectXVoiceClient interface
*
* History:
* Date By Reason
* ==== == ======
* 07/02/99 rodtoll Created It
* 07/26/99 rodtoll Updated QueryInterface to support IDirectXVoiceNotify
* 08/25/99 rodtoll General Cleanup/Modifications to support new
* compression sub-system.
* Added new parameter to GetCompressionTypes
* 09/03/99 rodtoll Updated parameters for DeleteUserBuffer
* 09/07/99 rodtoll Updated EnumCompressionTypes so that object doesn't
* need to be Initialized.
* 09/10/99 rodtoll Object validity checking
* 09/14/99 rodtoll Added DVC_SetNotifyMask
* 10/05/99 rodtoll Reversed destruction order to destroy object before
* transport. Fixes crash in some situations
* 10/18/99 rodtoll Fix: Passing NULL in QueryInterface casues crash
* rodtoll Fix: Calling Initialize twice passes
* 10/19/99 rodtoll Fix: Bug #113904 - Shutdown issues
* - Added reference count for notify interface, allows
* determination if disconnect should be called from release
* 10/25/99 rodtoll Fix: Bug #114098 - Release/Addref failure from multiple threads
* 11/17/99 rodtoll Fix: Bug #117447 - Removed checks for initialization because
* DirectVoiceCLientEngine members already do this.
* 12/16/99 rodtoll Bug #117405 - 3D Sound APIs misleading - 3d sound apis renamed
* The Delete3DSoundBuffer was re-worked to match the create
* 01/14/2000 rodtoll Updated parameters to Get/SetTransmitTargets
* rodtoll Added new API call GetSoundDeviceConfig
* 01/27/2000 rodtoll Bug #129934 - Update Create3DSoundBuffer to take DSBUFFERDESC
* 03/28/2000 rodtoll Removed reference to removed header file.
* 06/21/2000 rodtoll Bug #35767 - Update Create3DSoundBuffer to take DIRECTSOUNDBUFFERs
* 08/23/2000 rodtoll DllCanUnloadNow always returning TRUE!
* 10/05/2000 rodtoll Bug #46541 - DPVOICE: A/V linking to dpvoice.lib could cause application to fail init and crash
*
***************************************************************************/
#include "dxvoicepch.h"
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_Release"
STDAPI DVC_Release(LPDIRECTVOICECLIENTOBJECT lpDV )
{
HRESULT hr=S_OK;
LONG rc;
if( !DV_ValidDirectXVoiceClientObject( lpDV ) )
return DVERR_INVALIDOBJECT;
DNEnterCriticalSection( &lpDV->csCountLock );
if (lpDV->lIntRefCnt == 0)
{
DNLeaveCriticalSection( &lpDV->csCountLock );
return 0;
}
// dec the interface count
lpDV->lIntRefCnt--;
// Special case: Releasing object without stopping session
// May be more then one transport thread indicating in us
if( (lpDV->lIntRefCnt == 0) && lpDV->lpDVClientEngine->GetCurrentState() != DVCSTATE_IDLE )
{
DPFX(DPFPREP, DVF_INFOLEVEL, "Releasing interface without calling Disconnect" );
lpDV->lIntRefCnt = 0;
// We must release the lock because stopsession may call back into this function
DNLeaveCriticalSection( &lpDV->csCountLock );
hr = lpDV->lpDVClientEngine->Disconnect( DVFLAGS_SYNC );
DNEnterCriticalSection( &lpDV->csCountLock );
if( hr != DV_OK && hr != DVERR_SESSIONLOST )
{
DPFX(DPFPREP, DVF_INFOLEVEL, "Disconnect Failed hr=0x%x", hr );
}
}
rc = lpDV->lIntRefCnt;
if ( lpDV->lIntRefCnt == 0 )
{
// Leave the critical section, we may call back into this func.
// (Shouldn't though).
DNLeaveCriticalSection( &lpDV->csCountLock );
delete lpDV->lpDVClientEngine;
lpDV->lpDVClientEngine = NULL;
if( lpDV->lpDVTransport != 0 )
{
DNASSERT( lpDV->lpDVTransport->m_lRefCount == 0 );
delete lpDV->lpDVTransport;
lpDV->lpDVTransport = NULL;
}
DNDeleteCriticalSection( &lpDV->csCountLock );
DNFree(lpDV);
DecrementObjectCount();
}
else
{
DNLeaveCriticalSection( &lpDV->csCountLock );
}
return rc;
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_QueryInterface"
STDMETHODIMP DVC_QueryInterface(LPDIRECTVOICECLIENTOBJECT lpDVC, REFIID riid, LPVOID * ppvObj)
{
HRESULT hr = S_OK;
if( ppvObj == NULL ||
!DNVALID_WRITEPTR( ppvObj, sizeof(LPVOID) ) )
{
DPFX(DPFPREP, DVF_ERRORLEVEL, "Invalid pointer passed for object" );
return DVERR_INVALIDPOINTER;
}
*ppvObj=NULL;
if( !DV_ValidDirectXVoiceClientObject( lpDVC ) )
{
return DVERR_INVALIDOBJECT;
}
// hmmm, switch would be cleaner...
if( IsEqualIID(riid, IID_IUnknown) ||
IsEqualIID(riid, IID_IDirectPlayVoiceClient ) )
{
*ppvObj = lpDVC;
DV_AddRef(lpDVC);
}
else if( IsEqualIID(riid, IID_IDirectPlayVoiceNotify ) )
{
*ppvObj = &lpDVC->dvNotify;
DV_Notify_AddRef(&lpDVC->dvNotify);
}
else
{
hr = E_NOINTERFACE;
}
return hr;
}//DVC_QueryInterface
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_Connect"
STDMETHODIMP DVC_Connect(LPDIRECTVOICECLIENTOBJECT This, LPDVSOUNDDEVICECONFIG lpSoundDeviceConfig, LPDVCLIENTCONFIG lpClientConfig, DWORD dwFlags )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->Connect( lpSoundDeviceConfig, lpClientConfig, dwFlags );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_Disconnect"
STDMETHODIMP DVC_Disconnect(LPDIRECTVOICECLIENTOBJECT This, DWORD dwFlags)
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->Disconnect( dwFlags );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetSessionDesc"
STDMETHODIMP DVC_GetSessionDesc(LPDIRECTVOICECLIENTOBJECT This, LPDVSESSIONDESC lpSessionDesc )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetSessionDesc( lpSessionDesc );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetSoundDeviceConfig"
STDAPI DVC_GetSoundDeviceConfig( LPDIRECTVOICECLIENTOBJECT This, PDVSOUNDDEVICECONFIG pSoundDeviceConfig, PDWORD pdwBufferSize )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetSoundDeviceConfig( pSoundDeviceConfig, pdwBufferSize );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetClientConfig"
STDMETHODIMP DVC_GetClientConfig(LPDIRECTVOICECLIENTOBJECT This, LPDVCLIENTCONFIG lpClientConfig )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetClientConfig( lpClientConfig );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_SetClientConfig"
STDMETHODIMP DVC_SetClientConfig(LPDIRECTVOICECLIENTOBJECT This, LPDVCLIENTCONFIG lpClientConfig )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->SetClientConfig( lpClientConfig );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetCaps"
STDMETHODIMP DVC_GetCaps(LPDIRECTVOICECLIENTOBJECT This, LPDVCAPS lpdvCaps )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetCaps( lpdvCaps );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetCompressionTypes"
STDMETHODIMP DVC_GetCompressionTypes( LPDIRECTVOICECLIENTOBJECT This, LPVOID lpDataBuffer, LPDWORD lpdwSize, LPDWORD lpdwNumElements, DWORD dwFlags)
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetCompressionTypes( lpDataBuffer, lpdwSize, lpdwNumElements, dwFlags );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_SetTransmitTarget"
STDMETHODIMP DVC_SetTransmitTarget( LPDIRECTVOICECLIENTOBJECT This, PDVID pdvidTargets, DWORD dwNumTargets, DWORD dwFlags )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->SetTransmitTarget( pdvidTargets, dwNumTargets, dwFlags );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_GetTransmitTarget"
STDMETHODIMP DVC_GetTransmitTarget( LPDIRECTVOICECLIENTOBJECT This, LPDVID lpdvidTargets, PDWORD pdwNumElements, DWORD dwFlags )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->GetTransmitTarget( lpdvidTargets, pdwNumElements, dwFlags );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_Create3DSoundBuffer"
STDMETHODIMP DVC_Create3DSoundBuffer( LPDIRECTVOICECLIENTOBJECT This, DVID dvidEntity, LPDIRECTSOUNDBUFFER lpdsBuffer, DWORD dwPriority, DWORD dwFlags, LPDIRECTSOUND3DBUFFER *lpSoundBuffer )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->Create3DSoundBuffer( dvidEntity, lpdsBuffer, dwPriority, dwFlags, lpSoundBuffer );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_Delete3DSoundBuffer"
STDMETHODIMP DVC_Delete3DSoundBuffer( LPDIRECTVOICECLIENTOBJECT This, DVID dvidBuffer, LPDIRECTSOUND3DBUFFER *lpSoundBuffer )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
{
return DVERR_INVALIDOBJECT;
}
return This->lpDVClientEngine->Delete3DSoundBuffer( dvidBuffer, lpSoundBuffer );
}
#undef DPF_MODNAME
#define DPF_MODNAME "DVC_SetNotifyMask"
STDMETHODIMP DVC_SetNotifyMask( LPDIRECTVOICECLIENTOBJECT This, LPDWORD lpdwMessages, DWORD dwNumElements )
{
DNASSERT( This != NULL );
DNASSERT( This->lpDVEngine != NULL );
if( !DV_ValidDirectXVoiceClientObject( This ) )
return DVERR_INVALIDOBJECT;
return This->lpDVClientEngine->SetNotifyMask( lpdwMessages, dwNumElements );
}