dlls/mmdevapi/tests/mmdevenum.c - wine - Git at Google

 /*
  * Copyright 2009 Maarten Lankhorst
  *
  * 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 "wine/test.h"

 #define COBJMACROS

 #include "initguid.h"
 #include "endpointvolume.h"
 #include "mmdeviceapi.h"
 #include "audioclient.h"
 #include "audiopolicy.h"
 #include "dshow.h"
 #include "dsound.h"
 #include "devpkey.h"

 DEFINE_GUID(GUID_NULL,0,0,0,0,0,0,0,0,0,0,0);

 /* Some of the QueryInterface tests are really just to check if I got the IIDs right :) */

 /* IMMDeviceCollection appears to have no QueryInterface method and instead forwards to mme */
 static void test_collection(IMMDeviceEnumerator *mme, IMMDeviceCollection *col)
 {
     IMMDeviceCollection *col2;
     IMMDeviceEnumerator *mme2;
     IUnknown *unk;
     HRESULT hr;
     ULONG ref;
     UINT numdev;
     IMMDevice *dev;

     /* collection doesn't keep a ref on parent */
     IMMDeviceEnumerator_AddRef(mme);
     ref = IMMDeviceEnumerator_Release(mme);
     ok(ref == 2, "Reference count on parent is %u\n", ref);

     ref = IMMDeviceCollection_AddRef(col);
     IMMDeviceCollection_Release(col);
     ok(ref == 2, "Invalid reference count %u on collection\n", ref);

     hr = IMMDeviceCollection_QueryInterface(col, &IID_IUnknown, NULL);
     ok(hr == E_POINTER, "Null ppv returns %08x\n", hr);

     hr = IMMDeviceCollection_QueryInterface(col, &IID_IUnknown, (void**)&unk);
     ok(hr == S_OK, "Cannot query for IID_IUnknown: 0x%08x\n", hr);
     if (hr == S_OK)
     {
         ok((IUnknown*)col == unk, "Pointers are not identical %p/%p/%p\n", col, unk, mme);
         IUnknown_Release(unk);
     }

     hr = IMMDeviceCollection_QueryInterface(col, &IID_IMMDeviceCollection, (void**)&col2);
     ok(hr == S_OK, "Cannot query for IID_IMMDeviceCollection: 0x%08x\n", hr);
     if (hr == S_OK)
         IMMDeviceCollection_Release(col2);

     hr = IMMDeviceCollection_QueryInterface(col, &IID_IMMDeviceEnumerator, (void**)&mme2);
     ok(hr == E_NOINTERFACE, "Query for IID_IMMDeviceEnumerator returned: 0x%08x\n", hr);
     if (hr == S_OK)
         IMMDeviceEnumerator_Release(mme2);

     hr = IMMDeviceCollection_GetCount(col, NULL);
     ok(hr == E_POINTER, "GetCount returned 0x%08x\n", hr);

     hr = IMMDeviceCollection_GetCount(col, &numdev);
     ok(hr == S_OK, "GetCount returned 0x%08x\n", hr);

     dev = (void*)(LONG_PTR)0x12345678;
     hr = IMMDeviceCollection_Item(col, numdev, &dev);
     ok(hr == E_INVALIDARG, "Asking for too high device returned 0x%08x\n", hr);
     ok(dev == NULL, "Returned non-null device\n");

     if (numdev)
     {
         hr = IMMDeviceCollection_Item(col, 0, NULL);
         ok(hr == E_POINTER, "Query with null pointer returned 0x%08x\n", hr);

         hr = IMMDeviceCollection_Item(col, 0, &dev);
         ok(hr == S_OK, "Valid Item returned 0x%08x\n", hr);
         ok(dev != NULL, "Device is null!\n");
         if (dev != NULL)
         {
             char temp[128];
             WCHAR *id = NULL;
             if (IMMDevice_GetId(dev, &id) == S_OK)
             {
                 IMMDevice *dev2;

                 temp[sizeof(temp)-1] = 0;
                 WideCharToMultiByte(CP_ACP, 0, id, -1, temp, sizeof(temp)-1, NULL, NULL);
                 trace("Device found: %s\n", temp);

                 hr = IMMDeviceEnumerator_GetDevice(mme, id, &dev2);
                 ok(hr == S_OK, "GetDevice failed: %08x\n", hr);

                 IMMDevice_Release(dev2);

                 CoTaskMemFree(id);
             }
         }
         if (dev)
             IMMDevice_Release(dev);
     }
     IMMDeviceCollection_Release(col);
 }

 static HRESULT WINAPI notif_QueryInterface(IMMNotificationClient *iface,
         const GUID *riid, void **obj)
 {
     ok(0, "Unexpected QueryInterface call\n");
     return E_NOTIMPL;
 }

 static ULONG WINAPI notif_AddRef(IMMNotificationClient *iface)
 {
     ok(0, "Unexpected AddRef call\n");
     return 2;
 }

 static ULONG WINAPI notif_Release(IMMNotificationClient *iface)
 {
     ok(0, "Unexpected Release call\n");
     return 1;
 }

 static HRESULT WINAPI notif_OnDeviceStateChanged(IMMNotificationClient *iface,
         const WCHAR *device_id, DWORD new_state)
 {
     ok(0, "Unexpected OnDeviceStateChanged call\n");
     return E_NOTIMPL;
 }

 static HRESULT WINAPI notif_OnDeviceAdded(IMMNotificationClient *iface,
         const WCHAR *device_id)
 {
     ok(0, "Unexpected OnDeviceAdded call\n");
     return E_NOTIMPL;
 }

 static HRESULT WINAPI notif_OnDeviceRemoved(IMMNotificationClient *iface,
         const WCHAR *device_id)
 {
     ok(0, "Unexpected OnDeviceRemoved call\n");
     return E_NOTIMPL;
 }

 static HRESULT WINAPI notif_OnDefaultDeviceChanged(IMMNotificationClient *iface,
         EDataFlow flow, ERole role, const WCHAR *device_id)
 {
     ok(0, "Unexpected OnDefaultDeviceChanged call\n");
     return E_NOTIMPL;
 }

 static HRESULT WINAPI notif_OnPropertyValueChanged(IMMNotificationClient *iface,
         const WCHAR *device_id, const PROPERTYKEY key)
 {
     ok(0, "Unexpected OnPropertyValueChanged call\n");
     return E_NOTIMPL;
 }

 static IMMNotificationClientVtbl notif_vtbl = {
     notif_QueryInterface,
     notif_AddRef,
     notif_Release,
     notif_OnDeviceStateChanged,
     notif_OnDeviceAdded,
     notif_OnDeviceRemoved,
     notif_OnDefaultDeviceChanged,
     notif_OnPropertyValueChanged
 };

 static IMMNotificationClient notif = { &notif_vtbl };

 /* Only do parameter tests here, the actual MMDevice testing should be a separate test */
 START_TEST(mmdevenum)
 {
     static const WCHAR not_a_deviceW[] = {'n','o','t','a','d','e','v','i','c','e',0};

     HRESULT hr;
     IUnknown *unk = NULL;
     IMMDeviceEnumerator *mme, *mme2;
     ULONG ref;
     IMMDeviceCollection *col;
     IMMDevice *dev;

     CoInitializeEx(NULL, COINIT_MULTITHREADED);
     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&mme);
     if (FAILED(hr))
     {
         skip("mmdevapi not available: 0x%08x\n", hr);
         return;
     }

     /* Odd behavior.. bug? */
     ref = IMMDeviceEnumerator_AddRef(mme);
     ok(ref == 3, "Invalid reference count after incrementing: %u\n", ref);
     IMMDeviceEnumerator_Release(mme);

     hr = IMMDeviceEnumerator_QueryInterface(mme, &IID_IUnknown, (void**)&unk);
     ok(hr == S_OK, "returned 0x%08x\n", hr);
     if (hr != S_OK) return;

     ok( (LONG_PTR)mme == (LONG_PTR)unk, "Pointers are unequal %p/%p\n", unk, mme);
     IUnknown_Release(unk);

     /* Proving that it is static.. */
     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&mme2);
     ok(hr == S_OK, "CoCreateInstance failed: 0x%08x\n", hr);
     IMMDeviceEnumerator_Release(mme2);
     ok(mme == mme2, "Pointers are not equal!\n");

     hr = IMMDeviceEnumerator_QueryInterface(mme, &IID_IUnknown, NULL);
     ok(hr == E_POINTER, "Null pointer on QueryInterface returned %08x\n", hr);

     hr = IMMDeviceEnumerator_QueryInterface(mme, &GUID_NULL, (void**)&unk);
     ok(!unk, "Unk not reset to null after invalid QI\n");
     ok(hr == E_NOINTERFACE, "Invalid hr %08x returned on IID_NULL\n", hr);

     hr = IMMDeviceEnumerator_GetDevice(mme, not_a_deviceW, NULL);
     ok(hr == E_POINTER, "GetDevice gave wrong error: %08x\n", hr);

     hr = IMMDeviceEnumerator_GetDevice(mme, NULL, &dev);
     ok(hr == E_POINTER, "GetDevice gave wrong error: %08x\n", hr);

     hr = IMMDeviceEnumerator_GetDevice(mme, not_a_deviceW, &dev);
     ok(hr == E_INVALIDARG, "GetDevice gave wrong error: %08x\n", hr);

     col = (void*)(LONG_PTR)0x12345678;
     hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, 0xffff, DEVICE_STATEMASK_ALL, &col);
     ok(hr == E_INVALIDARG, "Setting invalid data flow returned 0x%08x\n", hr);
     ok(col == NULL, "Collection pointer non-null on failure\n");

     hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL+1, &col);
     ok(hr == E_INVALIDARG, "Setting invalid mask returned 0x%08x\n", hr);

     hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL, NULL);
     ok(hr == E_POINTER, "Invalid pointer returned: 0x%08x\n", hr);

     hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL, &col);
     ok(hr == S_OK, "Valid EnumAudioEndpoints returned 0x%08x\n", hr);
     if (hr == S_OK)
     {
         ok(!!col, "Returned null pointer\n");
         if (col)
             test_collection(mme, col);
     }

     hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, NULL);
     ok(hr == E_POINTER, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, &notif);
     ok(hr == S_OK, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, &notif);
     ok(hr == S_OK, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, NULL);
     ok(hr == E_POINTER, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, (IMMNotificationClient*)0xdeadbeef);
     ok(hr == E_NOTFOUND, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
     ok(hr == S_OK, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
     ok(hr == S_OK, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

     hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
     ok(hr == E_NOTFOUND, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

     IMMDeviceEnumerator_Release(mme);
 }
	/*
	* Copyright 2009 Maarten Lankhorst
	*
	* 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 "wine/test.h"

	#define COBJMACROS

	#include "initguid.h"
	#include "endpointvolume.h"
	#include "mmdeviceapi.h"
	#include "audioclient.h"
	#include "audiopolicy.h"
	#include "dshow.h"
	#include "dsound.h"
	#include "devpkey.h"

	DEFINE_GUID(GUID_NULL,0,0,0,0,0,0,0,0,0,0,0);

	/* Some of the QueryInterface tests are really just to check if I got the IIDs right :) */

	/* IMMDeviceCollection appears to have no QueryInterface method and instead forwards to mme */
	static void test_collection(IMMDeviceEnumerator mme, IMMDeviceCollection col)
	{
	IMMDeviceCollection *col2;
	IMMDeviceEnumerator *mme2;
	IUnknown *unk;
	HRESULT hr;
	ULONG ref;
	UINT numdev;
	IMMDevice *dev;

	/* collection doesn't keep a ref on parent */
	IMMDeviceEnumerator_AddRef(mme);
	ref = IMMDeviceEnumerator_Release(mme);
	ok(ref == 2, "Reference count on parent is %u\n", ref);

	ref = IMMDeviceCollection_AddRef(col);
	IMMDeviceCollection_Release(col);
	ok(ref == 2, "Invalid reference count %u on collection\n", ref);

	hr = IMMDeviceCollection_QueryInterface(col, &IID_IUnknown, NULL);
	ok(hr == E_POINTER, "Null ppv returns %08x\n", hr);

	hr = IMMDeviceCollection_QueryInterface(col, &IID_IUnknown, (void**)&unk);
	ok(hr == S_OK, "Cannot query for IID_IUnknown: 0x%08x\n", hr);
	if (hr == S_OK)
	{
	ok((IUnknown*)col == unk, "Pointers are not identical %p/%p/%p\n", col, unk, mme);
	IUnknown_Release(unk);
	}

	hr = IMMDeviceCollection_QueryInterface(col, &IID_IMMDeviceCollection, (void**)&col2);
	ok(hr == S_OK, "Cannot query for IID_IMMDeviceCollection: 0x%08x\n", hr);
	if (hr == S_OK)
	IMMDeviceCollection_Release(col2);

	hr = IMMDeviceCollection_QueryInterface(col, &IID_IMMDeviceEnumerator, (void**)&mme2);
	ok(hr == E_NOINTERFACE, "Query for IID_IMMDeviceEnumerator returned: 0x%08x\n", hr);
	if (hr == S_OK)
	IMMDeviceEnumerator_Release(mme2);

	hr = IMMDeviceCollection_GetCount(col, NULL);
	ok(hr == E_POINTER, "GetCount returned 0x%08x\n", hr);

	hr = IMMDeviceCollection_GetCount(col, &numdev);
	ok(hr == S_OK, "GetCount returned 0x%08x\n", hr);

	dev = (void*)(LONG_PTR)0x12345678;
	hr = IMMDeviceCollection_Item(col, numdev, &dev);
	ok(hr == E_INVALIDARG, "Asking for too high device returned 0x%08x\n", hr);
	ok(dev == NULL, "Returned non-null device\n");

	if (numdev)
	{
	hr = IMMDeviceCollection_Item(col, 0, NULL);
	ok(hr == E_POINTER, "Query with null pointer returned 0x%08x\n", hr);

	hr = IMMDeviceCollection_Item(col, 0, &dev);
	ok(hr == S_OK, "Valid Item returned 0x%08x\n", hr);
	ok(dev != NULL, "Device is null!\n");
	if (dev != NULL)
	{
	char temp[128];
	WCHAR *id = NULL;
	if (IMMDevice_GetId(dev, &id) == S_OK)
	{
	IMMDevice *dev2;

	temp[sizeof(temp)-1] = 0;
	WideCharToMultiByte(CP_ACP, 0, id, -1, temp, sizeof(temp)-1, NULL, NULL);
	trace("Device found: %s\n", temp);

	hr = IMMDeviceEnumerator_GetDevice(mme, id, &dev2);
	ok(hr == S_OK, "GetDevice failed: %08x\n", hr);

	IMMDevice_Release(dev2);

	CoTaskMemFree(id);
	}
	}
	if (dev)
	IMMDevice_Release(dev);
	}
	IMMDeviceCollection_Release(col);
	}

	static HRESULT WINAPI notif_QueryInterface(IMMNotificationClient *iface,
	const GUID riid, void *obj)
	{
	ok(0, "Unexpected QueryInterface call\n");
	return E_NOTIMPL;
	}

	static ULONG WINAPI notif_AddRef(IMMNotificationClient *iface)
	{
	ok(0, "Unexpected AddRef call\n");
	return 2;
	}

	static ULONG WINAPI notif_Release(IMMNotificationClient *iface)
	{
	ok(0, "Unexpected Release call\n");
	return 1;
	}

	static HRESULT WINAPI notif_OnDeviceStateChanged(IMMNotificationClient *iface,
	const WCHAR *device_id, DWORD new_state)
	{
	ok(0, "Unexpected OnDeviceStateChanged call\n");
	return E_NOTIMPL;
	}

	static HRESULT WINAPI notif_OnDeviceAdded(IMMNotificationClient *iface,
	const WCHAR *device_id)
	{
	ok(0, "Unexpected OnDeviceAdded call\n");
	return E_NOTIMPL;
	}

	static HRESULT WINAPI notif_OnDeviceRemoved(IMMNotificationClient *iface,
	const WCHAR *device_id)
	{
	ok(0, "Unexpected OnDeviceRemoved call\n");
	return E_NOTIMPL;
	}

	static HRESULT WINAPI notif_OnDefaultDeviceChanged(IMMNotificationClient *iface,
	EDataFlow flow, ERole role, const WCHAR *device_id)
	{
	ok(0, "Unexpected OnDefaultDeviceChanged call\n");
	return E_NOTIMPL;
	}

	static HRESULT WINAPI notif_OnPropertyValueChanged(IMMNotificationClient *iface,
	const WCHAR *device_id, const PROPERTYKEY key)
	{
	ok(0, "Unexpected OnPropertyValueChanged call\n");
	return E_NOTIMPL;
	}

	static IMMNotificationClientVtbl notif_vtbl = {
	notif_QueryInterface,
	notif_AddRef,
	notif_Release,
	notif_OnDeviceStateChanged,
	notif_OnDeviceAdded,
	notif_OnDeviceRemoved,
	notif_OnDefaultDeviceChanged,
	notif_OnPropertyValueChanged
	};

	static IMMNotificationClient notif = { &notif_vtbl };

	/* Only do parameter tests here, the actual MMDevice testing should be a separate test */
	START_TEST(mmdevenum)
	{
	static const WCHAR not_a_deviceW[] = {'n','o','t','a','d','e','v','i','c','e',0};

	HRESULT hr;
	IUnknown *unk = NULL;
	IMMDeviceEnumerator mme, mme2;
	ULONG ref;
	IMMDeviceCollection *col;
	IMMDevice *dev;

	CoInitializeEx(NULL, COINIT_MULTITHREADED);
	hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&mme);
	if (FAILED(hr))
	{
	skip("mmdevapi not available: 0x%08x\n", hr);
	return;
	}

	/* Odd behavior.. bug? */
	ref = IMMDeviceEnumerator_AddRef(mme);
	ok(ref == 3, "Invalid reference count after incrementing: %u\n", ref);
	IMMDeviceEnumerator_Release(mme);

	hr = IMMDeviceEnumerator_QueryInterface(mme, &IID_IUnknown, (void**)&unk);
	ok(hr == S_OK, "returned 0x%08x\n", hr);
	if (hr != S_OK) return;

	ok( (LONG_PTR)mme == (LONG_PTR)unk, "Pointers are unequal %p/%p\n", unk, mme);
	IUnknown_Release(unk);

	/* Proving that it is static.. */
	hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL, CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&mme2);
	ok(hr == S_OK, "CoCreateInstance failed: 0x%08x\n", hr);
	IMMDeviceEnumerator_Release(mme2);
	ok(mme == mme2, "Pointers are not equal!\n");

	hr = IMMDeviceEnumerator_QueryInterface(mme, &IID_IUnknown, NULL);
	ok(hr == E_POINTER, "Null pointer on QueryInterface returned %08x\n", hr);

	hr = IMMDeviceEnumerator_QueryInterface(mme, &GUID_NULL, (void**)&unk);
	ok(!unk, "Unk not reset to null after invalid QI\n");
	ok(hr == E_NOINTERFACE, "Invalid hr %08x returned on IID_NULL\n", hr);

	hr = IMMDeviceEnumerator_GetDevice(mme, not_a_deviceW, NULL);
	ok(hr == E_POINTER, "GetDevice gave wrong error: %08x\n", hr);

	hr = IMMDeviceEnumerator_GetDevice(mme, NULL, &dev);
	ok(hr == E_POINTER, "GetDevice gave wrong error: %08x\n", hr);

	hr = IMMDeviceEnumerator_GetDevice(mme, not_a_deviceW, &dev);
	ok(hr == E_INVALIDARG, "GetDevice gave wrong error: %08x\n", hr);

	col = (void*)(LONG_PTR)0x12345678;
	hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, 0xffff, DEVICE_STATEMASK_ALL, &col);
	ok(hr == E_INVALIDARG, "Setting invalid data flow returned 0x%08x\n", hr);
	ok(col == NULL, "Collection pointer non-null on failure\n");

	hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL+1, &col);
	ok(hr == E_INVALIDARG, "Setting invalid mask returned 0x%08x\n", hr);

	hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL, NULL);
	ok(hr == E_POINTER, "Invalid pointer returned: 0x%08x\n", hr);

	hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL, &col);
	ok(hr == S_OK, "Valid EnumAudioEndpoints returned 0x%08x\n", hr);
	if (hr == S_OK)
	{
	ok(!!col, "Returned null pointer\n");
	if (col)
	test_collection(mme, col);
	}

	hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, NULL);
	ok(hr == E_POINTER, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, &notif);
	ok(hr == S_OK, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_RegisterEndpointNotificationCallback(mme, &notif);
	ok(hr == S_OK, "RegisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, NULL);
	ok(hr == E_POINTER, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, (IMMNotificationClient*)0xdeadbeef);
	ok(hr == E_NOTFOUND, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
	ok(hr == S_OK, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
	ok(hr == S_OK, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

	hr = IMMDeviceEnumerator_UnregisterEndpointNotificationCallback(mme, &notif);
	ok(hr == E_NOTFOUND, "UnregisterEndpointNotificationCallback failed: %08x\n", hr);

	IMMDeviceEnumerator_Release(mme);
	}