mmdevapi: Add an empty IMMDeviceCollection implementation.
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056588abbc
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5e9ec19217
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@ -42,6 +42,101 @@ typedef struct MMDevEnumImpl
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static MMDevEnumImpl *MMDevEnumerator;
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static const IMMDeviceEnumeratorVtbl MMDevEnumVtbl;
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typedef struct MMDevColImpl
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{
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const IMMDeviceCollectionVtbl *lpVtbl;
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LONG ref;
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MMDevEnumImpl *parent;
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EDataFlow flow;
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DWORD state;
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} MMDevColImpl;
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static const IMMDeviceCollectionVtbl MMDevColVtbl;
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static HRESULT MMDevCol_Create(IMMDeviceCollection **ppv, MMDevEnumImpl *parent, EDataFlow flow, DWORD state)
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{
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MMDevColImpl *This;
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This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
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*ppv = NULL;
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if (!This)
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return E_OUTOFMEMORY;
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This->lpVtbl = &MMDevColVtbl;
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This->ref = 1;
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This->parent = parent;
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This->flow = flow;
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This->state = state;
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*ppv = (IMMDeviceCollection*)This;
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return S_OK;
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}
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static void MMDevCol_Destroy(MMDevColImpl *This)
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{
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HeapFree(GetProcessHeap(), 0, This);
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}
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static HRESULT WINAPI MMDevCol_QueryInterface(IMMDeviceCollection *iface, REFIID riid, void **ppv)
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{
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MMDevColImpl *This = (MMDevColImpl*)iface;
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if (!ppv)
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return E_POINTER;
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if (IsEqualIID(riid, &IID_IUnknown)
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|| IsEqualIID(riid, &IID_IMMDeviceCollection))
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*ppv = This;
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else
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*ppv = NULL;
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if (!*ppv)
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return E_NOINTERFACE;
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IUnknown_AddRef((IUnknown*)*ppv);
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return S_OK;
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}
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static ULONG WINAPI MMDevCol_AddRef(IMMDeviceCollection *iface)
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{
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MMDevColImpl *This = (MMDevColImpl*)iface;
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LONG ref = InterlockedIncrement(&This->ref);
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TRACE("Refcount now %i\n", ref);
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return ref;
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}
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static ULONG WINAPI MMDevCol_Release(IMMDeviceCollection *iface)
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{
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MMDevColImpl *This = (MMDevColImpl*)iface;
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LONG ref = InterlockedDecrement(&This->ref);
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TRACE("Refcount now %i\n", ref);
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if (!ref)
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MMDevCol_Destroy(This);
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return ref;
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}
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static HRESULT WINAPI MMDevCol_GetCount(IMMDeviceCollection *iface, UINT *numdevs)
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{
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MMDevColImpl *This = (MMDevColImpl*)iface;
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TRACE("(%p)->(%p)\n", This, numdevs);
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if (!numdevs)
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return E_POINTER;
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*numdevs = 0;
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return S_OK;
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}
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static HRESULT WINAPI MMDevCol_Item(IMMDeviceCollection *iface, UINT i, IMMDevice **dev)
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{
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MMDevColImpl *This = (MMDevColImpl*)iface;
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TRACE("(%p)->(%u, %p)\n", This, i, dev);
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if (!dev)
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return E_POINTER;
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*dev = NULL;
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return E_INVALIDARG;
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}
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static const IMMDeviceCollectionVtbl MMDevColVtbl =
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{
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MMDevCol_QueryInterface,
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MMDevCol_AddRef,
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MMDevCol_Release,
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MMDevCol_GetCount,
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MMDevCol_Item
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};
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HRESULT MMDevEnum_Create(REFIID riid, void **ppv)
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{
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MMDevEnumImpl *This = MMDevEnumerator;
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@ -111,8 +206,7 @@ static HRESULT WINAPI MMDevEnum_EnumAudioEndpoints(IMMDeviceEnumerator *iface, E
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return E_INVALIDARG;
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if (mask & ~DEVICE_STATEMASK_ALL)
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return E_INVALIDARG;
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FIXME("stub\n");
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return E_NOTFOUND;
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return MMDevCol_Create(devices, This, flow, mask);
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}
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static HRESULT WINAPI MMDevEnum_GetDefaultAudioEndpoint(IMMDeviceEnumerator *iface, EDataFlow flow, ERole role, IMMDevice **device)
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@ -45,6 +45,9 @@ static void test_collection(IMMDeviceEnumerator *mme, IMMDeviceCollection *col)
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IUnknown_Release(col);
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ok(ref == 2, "Invalid reference count %u on collection\n", ref);
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hr = IUnknown_QueryInterface(col, &IID_IUnknown, NULL);
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ok(hr == E_POINTER, "Null ppv returns %08x\n", hr);
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hr = IUnknown_QueryInterface(col, &IID_IUnknown, (void**)&unk);
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ok(hr == S_OK, "Cannot query for IID_IUnknown: 0x%08x\n", hr);
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if (hr == S_OK)
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@ -137,7 +140,7 @@ START_TEST(mmdevenum)
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ok(hr == E_POINTER, "Invalid pointer returned: 0x%08x\n", hr);
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hr = IMMDeviceEnumerator_EnumAudioEndpoints(mme, eAll, DEVICE_STATEMASK_ALL, &col);
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todo_wine ok(hr == S_OK, "Valid EnumAudioEndpoints returned 0x%08x\n", hr);
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ok(hr == S_OK, "Valid EnumAudioEndpoints returned 0x%08x\n", hr);
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if (hr == S_OK)
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{
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ok(!!col, "Returned null pointer\n");
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