dlls/mmdevapi/main.c - wine - Git at Google

 /*
  * Copyright 2009 Maarten Lankhorst
  * Copyright 2011 Andrew Eikum for CodeWeavers
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Lesser General Public License for more details.
  *
  * You should have received a copy of the GNU Lesser General Public
  * License along with this library; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  */

 #include "config.h"
 #include "wine/port.h"

 #include <stdarg.h>

 #define COBJMACROS
 #include "windef.h"
 #include "winbase.h"
 #include "wingdi.h"
 #include "wine/library.h"

 #include "ole2.h"
 #include "olectl.h"
 #include "rpcproxy.h"
 #include "propsys.h"
 #include "propkeydef.h"
 #include "mmdeviceapi.h"
 #include "mmsystem.h"
 #include "dsound.h"
 #include "audioclient.h"
 #include "endpointvolume.h"
 #include "audiopolicy.h"
 #include "devpkey.h"
 #include "winreg.h"

 #include "mmdevapi.h"
 #include "wine/debug.h"
 #include "wine/unicode.h"

 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);

 static HINSTANCE instance;

 DriverFuncs drvs;

 const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
     'W','i','n','e','\\','D','r','i','v','e','r','s',0};

 static const char *get_priority_string(int prio)
 {
     switch(prio){
     case Priority_Unavailable:
         return "Unavailable";
     case Priority_Low:
         return "Low";
     case Priority_Neutral:
         return "Neutral";
     case Priority_Preferred:
         return "Preferred";
     }
     return "Invalid";
 }

 static BOOL load_driver(const WCHAR *name, DriverFuncs *driver)
 {
     WCHAR driver_module[264];
     static const WCHAR wineW[] = {'w','i','n','e',0};
     static const WCHAR dotdrvW[] = {'.','d','r','v',0};

     lstrcpyW(driver_module, wineW);
     lstrcatW(driver_module, name);
     lstrcatW(driver_module, dotdrvW);

     TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));

     driver->module = LoadLibraryW(driver_module);
     if(!driver->module){
         TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
                 GetLastError());
         return FALSE;
     }

 #define LDFC(n) do { driver->p##n = (void*)GetProcAddress(driver->module, #n);\
         if(!driver->p##n) { FreeLibrary(driver->module); return FALSE; } } while(0)
     LDFC(GetPriority);
     LDFC(GetEndpointIDs);
     LDFC(GetAudioEndpoint);
     LDFC(GetAudioSessionManager);
 #undef LDFC

     /* optional - do not fail if not found */
     driver->pGetPropValue = (void*)GetProcAddress(driver->module, "GetPropValue");

     driver->priority = driver->pGetPriority();
     lstrcpyW(driver->module_name, driver_module);

     TRACE("Successfully loaded %s with priority %s\n",
             wine_dbgstr_w(driver_module), get_priority_string(driver->priority));

     return TRUE;
 }

 static BOOL init_driver(void)
 {
     static const WCHAR drv_value[] = {'A','u','d','i','o',0};

     static WCHAR default_list[] = {'p','u','l','s','e',',','a','l','s','a',',','o','s','s',',',
         'c','o','r','e','a','u','d','i','o',0};

     DriverFuncs driver;
     HKEY key;
     WCHAR reg_list[256], *p, *next, *driver_list = default_list;

     if(drvs.module)
         return TRUE;

     if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
         DWORD size = sizeof(reg_list);

         if(RegQueryValueExW(key, drv_value, 0, NULL, (BYTE*)reg_list,
                     &size) == ERROR_SUCCESS){
             if(reg_list[0] == '\0'){
                 TRACE("User explicitly chose no driver\n");
                 RegCloseKey(key);
                 return TRUE;
             }

             driver_list = reg_list;
         }

         RegCloseKey(key);
     }

     TRACE("Loading driver list %s\n", wine_dbgstr_w(driver_list));
     for(next = p = driver_list; next; p = next + 1){
         next = strchrW(p, ',');
         if(next)
             *next = '\0';

         driver.priority = Priority_Unavailable;
         if(load_driver(p, &driver)){
             if(driver.priority == Priority_Unavailable)
                 FreeLibrary(driver.module);
             else if(!drvs.module || driver.priority > drvs.priority){
                 TRACE("Selecting driver %s with priority %s\n",
                         wine_dbgstr_w(p), get_priority_string(driver.priority));
                 if(drvs.module)
                     FreeLibrary(drvs.module);
                 drvs = driver;
             }else
                 FreeLibrary(driver.module);
         }else
             TRACE("Failed to load driver %s\n", wine_dbgstr_w(p));

         if(next)
             *next = ',';
     }

     return drvs.module != 0;
 }

 BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
 {
     TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);

     switch (fdwReason)
     {
         case DLL_PROCESS_ATTACH:
             instance = hinstDLL;
             DisableThreadLibraryCalls(hinstDLL);
             break;
         case DLL_PROCESS_DETACH:
             if(lpvReserved)
                 break;
             MMDevEnum_Free();
             break;
     }

     return TRUE;
 }

 HRESULT WINAPI DllCanUnloadNow(void)
 {
     return S_FALSE;
 }

 typedef HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);

 typedef struct {
     IClassFactory IClassFactory_iface;
     REFCLSID rclsid;
     FnCreateInstance pfnCreateInstance;
 } IClassFactoryImpl;

 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 {
     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 }

 static HRESULT WINAPI
 MMCF_QueryInterface(IClassFactory *iface, REFIID riid, void **ppobj)
 {
     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
     if (ppobj == NULL)
         return E_POINTER;
     if (IsEqualIID(riid, &IID_IUnknown) ||
         IsEqualIID(riid, &IID_IClassFactory))
     {
         *ppobj = iface;
         IClassFactory_AddRef(iface);
         return S_OK;
     }
     *ppobj = NULL;
     return E_NOINTERFACE;
 }

 static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
 {
     return 2;
 }

 static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
 {
     /* static class, won't be freed */
     return 1;
 }

 static HRESULT WINAPI MMCF_CreateInstance(
     LPCLASSFACTORY iface,
     LPUNKNOWN pOuter,
     REFIID riid,
     LPVOID *ppobj)
 {
     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);

     if (pOuter)
         return CLASS_E_NOAGGREGATION;

     if (ppobj == NULL) {
         WARN("invalid parameter\n");
         return E_POINTER;
     }
     *ppobj = NULL;
     return This->pfnCreateInstance(riid, ppobj);
 }

 static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 {
     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
     FIXME("(%p, %d) stub!\n", This, dolock);
     return S_OK;
 }

 static const IClassFactoryVtbl MMCF_Vtbl = {
     MMCF_QueryInterface,
     MMCF_AddRef,
     MMCF_Release,
     MMCF_CreateInstance,
     MMCF_LockServer
 };

 static IClassFactoryImpl MMDEVAPI_CF[] = {
     { { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
 };

 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 {
     unsigned int i = 0;
     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);

     if(!init_driver()){
         ERR("Driver initialization failed\n");
         return E_FAIL;
     }

     if (ppv == NULL) {
         WARN("invalid parameter\n");
         return E_INVALIDARG;
     }

     *ppv = NULL;

     if (!IsEqualIID(riid, &IID_IClassFactory) &&
         !IsEqualIID(riid, &IID_IUnknown)) {
         WARN("no interface for %s\n", debugstr_guid(riid));
         return E_NOINTERFACE;
     }

     for (i = 0; i < sizeof(MMDEVAPI_CF)/sizeof(MMDEVAPI_CF[0]); ++i)
     {
         if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
             IClassFactory_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
             *ppv = &MMDEVAPI_CF[i];
             return S_OK;
         }
     }

     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
          debugstr_guid(riid), ppv);
     return CLASS_E_CLASSNOTAVAILABLE;
 }

 /***********************************************************************
  *		DllRegisterServer (MMDEVAPI.@)
  */
 HRESULT WINAPI DllRegisterServer(void)
 {
     return __wine_register_resources( instance );
 }

 /***********************************************************************
  *		DllUnregisterServer (MMDEVAPI.@)
  */
 HRESULT WINAPI DllUnregisterServer(void)
 {
     return __wine_unregister_resources( instance );
 }
	/*
	* Copyright 2009 Maarten Lankhorst
	* Copyright 2011 Andrew Eikum for CodeWeavers
	*
	* This library is free software; you can redistribute it and/or
	* modify it under the terms of the GNU Lesser General Public
	* License as published by the Free Software Foundation; either
	* version 2.1 of the License, or (at your option) any later version.
	*
	* This library is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* Lesser General Public License for more details.
	*
	* You should have received a copy of the GNU Lesser General Public
	* License along with this library; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
	*/

	#include "config.h"
	#include "wine/port.h"

	#include <stdarg.h>

	#define COBJMACROS
	#include "windef.h"
	#include "winbase.h"
	#include "wingdi.h"
	#include "wine/library.h"

	#include "ole2.h"
	#include "olectl.h"
	#include "rpcproxy.h"
	#include "propsys.h"
	#include "propkeydef.h"
	#include "mmdeviceapi.h"
	#include "mmsystem.h"
	#include "dsound.h"
	#include "audioclient.h"
	#include "endpointvolume.h"
	#include "audiopolicy.h"
	#include "devpkey.h"
	#include "winreg.h"

	#include "mmdevapi.h"
	#include "wine/debug.h"
	#include "wine/unicode.h"

	WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);

	static HINSTANCE instance;

	DriverFuncs drvs;

	const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
	'W','i','n','e','\\','D','r','i','v','e','r','s',0};

	static const char *get_priority_string(int prio)
	{
	switch(prio){
	case Priority_Unavailable:
	return "Unavailable";
	case Priority_Low:
	return "Low";
	case Priority_Neutral:
	return "Neutral";
	case Priority_Preferred:
	return "Preferred";
	}
	return "Invalid";
	}

	static BOOL load_driver(const WCHAR name, DriverFuncs driver)
	{
	WCHAR driver_module[264];
	static const WCHAR wineW[] = {'w','i','n','e',0};
	static const WCHAR dotdrvW[] = {'.','d','r','v',0};

	lstrcpyW(driver_module, wineW);
	lstrcatW(driver_module, name);
	lstrcatW(driver_module, dotdrvW);

	TRACE("Attempting to load %s\n", wine_dbgstr_w(driver_module));

	driver->module = LoadLibraryW(driver_module);
	if(!driver->module){
	TRACE("Unable to load %s: %u\n", wine_dbgstr_w(driver_module),
	GetLastError());
	return FALSE;
	}

	#define LDFC(n) do { driver->p##n = (void*)GetProcAddress(driver->module, #n);\
	if(!driver->p##n) { FreeLibrary(driver->module); return FALSE; } } while(0)
	LDFC(GetPriority);
	LDFC(GetEndpointIDs);
	LDFC(GetAudioEndpoint);
	LDFC(GetAudioSessionManager);
	#undef LDFC

	/* optional - do not fail if not found */
	driver->pGetPropValue = (void*)GetProcAddress(driver->module, "GetPropValue");

	driver->priority = driver->pGetPriority();
	lstrcpyW(driver->module_name, driver_module);

	TRACE("Successfully loaded %s with priority %s\n",
	wine_dbgstr_w(driver_module), get_priority_string(driver->priority));

	return TRUE;
	}

	static BOOL init_driver(void)
	{
	static const WCHAR drv_value[] = {'A','u','d','i','o',0};

	static WCHAR default_list[] = {'p','u','l','s','e',',','a','l','s','a',',','o','s','s',',',
	'c','o','r','e','a','u','d','i','o',0};

	DriverFuncs driver;
	HKEY key;
	WCHAR reg_list[256], p, next, *driver_list = default_list;

	if(drvs.module)
	return TRUE;

	if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
	DWORD size = sizeof(reg_list);

	if(RegQueryValueExW(key, drv_value, 0, NULL, (BYTE*)reg_list,
	&size) == ERROR_SUCCESS){
	if(reg_list[0] == '\0'){
	TRACE("User explicitly chose no driver\n");
	RegCloseKey(key);
	return TRUE;
	}

	driver_list = reg_list;
	}

	RegCloseKey(key);
	}

	TRACE("Loading driver list %s\n", wine_dbgstr_w(driver_list));
	for(next = p = driver_list; next; p = next + 1){
	next = strchrW(p, ',');
	if(next)
	*next = '\0';

	driver.priority = Priority_Unavailable;
	if(load_driver(p, &driver)){
	if(driver.priority == Priority_Unavailable)
	FreeLibrary(driver.module);
	else if(!drvs.module \|\| driver.priority > drvs.priority){
	TRACE("Selecting driver %s with priority %s\n",
	wine_dbgstr_w(p), get_priority_string(driver.priority));
	if(drvs.module)
	FreeLibrary(drvs.module);
	drvs = driver;
	}else
	FreeLibrary(driver.module);
	}else
	TRACE("Failed to load driver %s\n", wine_dbgstr_w(p));

	if(next)
	*next = ',';
	}

	return drvs.module != 0;
	}

	BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
	{
	TRACE("(0x%p, %d, %p)\n", hinstDLL, fdwReason, lpvReserved);

	switch (fdwReason)
	{
	case DLL_PROCESS_ATTACH:
	instance = hinstDLL;
	DisableThreadLibraryCalls(hinstDLL);
	break;
	case DLL_PROCESS_DETACH:
	if(lpvReserved)
	break;
	MMDevEnum_Free();
	break;
	}

	return TRUE;
	}

	HRESULT WINAPI DllCanUnloadNow(void)
	{
	return S_FALSE;
	}

	typedef HRESULT (FnCreateInstance)(REFIID riid, LPVOID ppobj);

	typedef struct {
	IClassFactory IClassFactory_iface;
	REFCLSID rclsid;
	FnCreateInstance pfnCreateInstance;
	} IClassFactoryImpl;

	static inline IClassFactoryImpl impl_from_IClassFactory(IClassFactory iface)
	{
	return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
	}

	static HRESULT WINAPI
	MMCF_QueryInterface(IClassFactory iface, REFIID riid, void *ppobj)
	{
	IClassFactoryImpl *This = impl_from_IClassFactory(iface);
	TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
	if (ppobj == NULL)
	return E_POINTER;
	if (IsEqualIID(riid, &IID_IUnknown) \|\|
	IsEqualIID(riid, &IID_IClassFactory))
	{
	*ppobj = iface;
	IClassFactory_AddRef(iface);
	return S_OK;
	}
	*ppobj = NULL;
	return E_NOINTERFACE;
	}

	static ULONG WINAPI MMCF_AddRef(LPCLASSFACTORY iface)
	{
	return 2;
	}

	static ULONG WINAPI MMCF_Release(LPCLASSFACTORY iface)
	{
	/* static class, won't be freed */
	return 1;
	}

	static HRESULT WINAPI MMCF_CreateInstance(
	LPCLASSFACTORY iface,
	LPUNKNOWN pOuter,
	REFIID riid,
	LPVOID *ppobj)
	{
	IClassFactoryImpl *This = impl_from_IClassFactory(iface);
	TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);

	if (pOuter)
	return CLASS_E_NOAGGREGATION;

	if (ppobj == NULL) {
	WARN("invalid parameter\n");
	return E_POINTER;
	}
	*ppobj = NULL;
	return This->pfnCreateInstance(riid, ppobj);
	}

	static HRESULT WINAPI MMCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
	{
	IClassFactoryImpl *This = impl_from_IClassFactory(iface);
	FIXME("(%p, %d) stub!\n", This, dolock);
	return S_OK;
	}

	static const IClassFactoryVtbl MMCF_Vtbl = {
	MMCF_QueryInterface,
	MMCF_AddRef,
	MMCF_Release,
	MMCF_CreateInstance,
	MMCF_LockServer
	};

	static IClassFactoryImpl MMDEVAPI_CF[] = {
	{ { &MMCF_Vtbl }, &CLSID_MMDeviceEnumerator, (FnCreateInstance)MMDevEnum_Create }
	};

	HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
	{
	unsigned int i = 0;
	TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);

	if(!init_driver()){
	ERR("Driver initialization failed\n");
	return E_FAIL;
	}

	if (ppv == NULL) {
	WARN("invalid parameter\n");
	return E_INVALIDARG;
	}

	*ppv = NULL;

	if (!IsEqualIID(riid, &IID_IClassFactory) &&
	!IsEqualIID(riid, &IID_IUnknown)) {
	WARN("no interface for %s\n", debugstr_guid(riid));
	return E_NOINTERFACE;
	}

	for (i = 0; i < sizeof(MMDEVAPI_CF)/sizeof(MMDEVAPI_CF[0]); ++i)
	{
	if (IsEqualGUID(rclsid, MMDEVAPI_CF[i].rclsid)) {
	IClassFactory_AddRef(&MMDEVAPI_CF[i].IClassFactory_iface);
	*ppv = &MMDEVAPI_CF[i];
	return S_OK;
	}
	}

	WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
	debugstr_guid(riid), ppv);
	return CLASS_E_CLASSNOTAVAILABLE;
	}

	/***********************************************************************
	* DllRegisterServer (MMDEVAPI.@)
	*/
	HRESULT WINAPI DllRegisterServer(void)
	{
	return __wine_register_resources( instance );
	}

	/***********************************************************************
	* DllUnregisterServer (MMDEVAPI.@)
	*/
	HRESULT WINAPI DllUnregisterServer(void)
	{
	return __wine_unregister_resources( instance );
	}