144 lines
No EOL
5 KiB
C
144 lines
No EOL
5 KiB
C
/*
|
|
* Microsoft COM initialization routines
|
|
* Copyright (c) 1999-2011 Ross Bencina, Dmitry Kostjuchenko
|
|
*
|
|
* Based on the Open Source API proposed by Ross Bencina
|
|
* Copyright (c) 1999-2011 Ross Bencina, Phil Burk
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files
|
|
* (the "Software"), to deal in the Software without restriction,
|
|
* including without limitation the rights to use, copy, modify, merge,
|
|
* publish, distribute, sublicense, and/or sell copies of the Software,
|
|
* and to permit persons to whom the Software is furnished to do so,
|
|
* subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be
|
|
* included in all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
|
|
* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR
|
|
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
|
|
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
*/
|
|
|
|
/*
|
|
* The text above constitutes the entire PortAudio license; however,
|
|
* the PortAudio community also makes the following non-binding requests:
|
|
*
|
|
* Any person wishing to distribute modifications to the Software is
|
|
* requested to send the modifications to the original developer so that
|
|
* they can be incorporated into the canonical version. It is also
|
|
* requested that these non-binding requests be included along with the
|
|
* license above.
|
|
*/
|
|
|
|
/** @file
|
|
@ingroup win_src
|
|
|
|
@brief Microsoft COM initialization routines.
|
|
*/
|
|
|
|
#include <windows.h>
|
|
#include <objbase.h>
|
|
|
|
#include "portaudio.h"
|
|
#include "pa_util.h"
|
|
#include "pa_debugprint.h"
|
|
|
|
#include "pa_win_coinitialize.h"
|
|
|
|
|
|
#if (defined(WIN32) && (defined(_MSC_VER) && (_MSC_VER >= 1200))) && !defined(_WIN32_WCE) /* MSC version 6 and above */
|
|
#pragma comment( lib, "ole32.lib" )
|
|
#endif
|
|
|
|
|
|
/* use some special bit patterns here to try to guard against uninitialized memory errors */
|
|
#define PAWINUTIL_COM_INITIALIZED (0xb38f)
|
|
#define PAWINUTIL_COM_NOT_INITIALIZED (0xf1cd)
|
|
|
|
|
|
PaError PaWinUtil_CoInitialize( PaHostApiTypeId hostApiType, PaWinUtilComInitializationResult *comInitializationResult )
|
|
{
|
|
HRESULT hr;
|
|
|
|
comInitializationResult->state = PAWINUTIL_COM_NOT_INITIALIZED;
|
|
|
|
/*
|
|
If COM is already initialized CoInitialize will either return
|
|
FALSE, or RPC_E_CHANGED_MODE if it was initialised in a different
|
|
threading mode. In either case we shouldn't consider it an error
|
|
but we need to be careful to not call CoUninitialize() if
|
|
RPC_E_CHANGED_MODE was returned.
|
|
*/
|
|
|
|
hr = CoInitialize(0); /* use legacy-safe equivalent to CoInitializeEx(NULL, COINIT_APARTMENTTHREADED) */
|
|
if( FAILED(hr) && hr != RPC_E_CHANGED_MODE )
|
|
{
|
|
PA_DEBUG(("CoInitializeEx failed. hr=%d\n", hr));
|
|
|
|
if( hr == E_OUTOFMEMORY )
|
|
return paInsufficientMemory;
|
|
|
|
{
|
|
char *lpMsgBuf;
|
|
FormatMessage(
|
|
FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM,
|
|
NULL,
|
|
hr,
|
|
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
|
|
(LPTSTR) &lpMsgBuf,
|
|
0,
|
|
NULL
|
|
);
|
|
PaUtil_SetLastHostErrorInfo( hostApiType, hr, lpMsgBuf );
|
|
LocalFree( lpMsgBuf );
|
|
}
|
|
|
|
return paUnanticipatedHostError;
|
|
}
|
|
|
|
if( hr != RPC_E_CHANGED_MODE )
|
|
{
|
|
comInitializationResult->state = PAWINUTIL_COM_INITIALIZED;
|
|
|
|
/*
|
|
Memorize calling thread id and report warning on Uninitialize if
|
|
calling thread is different as CoInitialize must match CoUninitialize
|
|
in the same thread.
|
|
*/
|
|
comInitializationResult->initializingThreadId = GetCurrentThreadId();
|
|
}
|
|
|
|
return paNoError;
|
|
}
|
|
|
|
|
|
void PaWinUtil_CoUninitialize( PaHostApiTypeId hostApiType, PaWinUtilComInitializationResult *comInitializationResult )
|
|
{
|
|
if( comInitializationResult->state != PAWINUTIL_COM_NOT_INITIALIZED
|
|
&& comInitializationResult->state != PAWINUTIL_COM_INITIALIZED ){
|
|
|
|
PA_DEBUG(("ERROR: PaWinUtil_CoUninitialize called without calling PaWinUtil_CoInitialize\n"));
|
|
}
|
|
|
|
if( comInitializationResult->state == PAWINUTIL_COM_INITIALIZED )
|
|
{
|
|
DWORD currentThreadId = GetCurrentThreadId();
|
|
if( comInitializationResult->initializingThreadId != currentThreadId )
|
|
{
|
|
PA_DEBUG(("ERROR: failed PaWinUtil_CoUninitialize calling thread[%d] does not match initializing thread[%d]\n",
|
|
currentThreadId, comInitializationResult->initializingThreadId));
|
|
}
|
|
else
|
|
{
|
|
CoUninitialize();
|
|
|
|
comInitializationResult->state = PAWINUTIL_COM_NOT_INITIALIZED;
|
|
}
|
|
}
|
|
} |