dmsynth: Move constructor parameter checks to class factory.

dlls/dmsynth/dmsynth_main.c

@@ -27,7 +27,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(dmsynth);
 
 typedef struct {
         IClassFactory IClassFactory_iface;
-        HRESULT (*fnCreateInstance)(REFIID riid, void **ppv);
+        HRESULT (*create_instance)(IUnknown **ret_iface);
 } IClassFactoryImpl;
 
 /******************************************************************
@@ -68,17 +68,24 @@ static ULONG WINAPI ClassFactory_Release(IClassFactory *iface)
         return 1; /* non-heap based object */
 }
 
-static HRESULT WINAPI ClassFactory_CreateInstance(IClassFactory *iface, IUnknown *pUnkOuter,
-        REFIID riid, void **ppv)
+static HRESULT WINAPI ClassFactory_CreateInstance(IClassFactory *iface, IUnknown *unk_outer,
+        REFIID riid, void **ret_iface)
 {
     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
+    IUnknown *object;
+    HRESULT hr;
 
-        TRACE ("(%p, %s, %p)\n", pUnkOuter, debugstr_dmguid(riid), ppv);
+    TRACE("(%p, %s, %p)\n", unk_outer, debugstr_dmguid(riid), ret_iface);
 
-        if (pUnkOuter)
-            return CLASS_E_NOAGGREGATION;
+    *ret_iface = NULL;
+    if (unk_outer) return CLASS_E_NOAGGREGATION;
+    if (SUCCEEDED(hr = This->create_instance(&object)))
+    {
+        hr = IUnknown_QueryInterface(object, riid, ret_iface);
+        IUnknown_Release(object);
+    }
 
-        return This->fnCreateInstance(riid, ppv);
+    return hr;
 }
 
 static HRESULT WINAPI ClassFactory_LockServer(IClassFactory *iface, BOOL dolock)
@@ -95,9 +102,8 @@ static const IClassFactoryVtbl classfactory_vtbl = {
         ClassFactory_LockServer
 };
 
-static IClassFactoryImpl Synth_CF = {{&classfactory_vtbl}, DMUSIC_CreateDirectMusicSynthImpl};
-static IClassFactoryImpl SynthSink_CF = {{&classfactory_vtbl},
-                                         DMUSIC_CreateDirectMusicSynthSinkImpl};
+static IClassFactoryImpl Synth_CF = {{&classfactory_vtbl}, synth_create};
+static IClassFactoryImpl SynthSink_CF = {{&classfactory_vtbl}, synth_sink_create};
 
 
 /******************************************************************

dlls/dmsynth/dmsynth_private.h

@@ -43,8 +43,8 @@
 /*****************************************************************************
  * ClassFactory
  */
-extern HRESULT DMUSIC_CreateDirectMusicSynthImpl(REFIID riid, void **ppobj);
-extern HRESULT DMUSIC_CreateDirectMusicSynthSinkImpl(REFIID riid, void **ppobj);
+extern HRESULT synth_create(IUnknown **ret_iface);
+extern HRESULT synth_sink_create(IUnknown **ret_iface);
 
 /*****************************************************************************
  * Misc.

dlls/dmsynth/synth.c

@@ -737,19 +737,18 @@ static const IKsControlVtbl synth_control_vtbl =
     synth_control_KsEvent,
 };
 
-HRESULT DMUSIC_CreateDirectMusicSynthImpl(REFIID riid, void **ppobj)
+HRESULT synth_create(IUnknown **ret_iface)
 {
     struct synth *obj;
-    HRESULT hr;
 
-    TRACE("(%s, %p)\n", debugstr_guid(riid), ppobj);
+    TRACE("(%p)\n", ret_iface);
 
-    *ppobj = NULL;
+    *ret_iface = NULL;
     if (!(obj = calloc(1, sizeof(*obj)))) return E_OUTOFMEMORY;
     obj->IDirectMusicSynth8_iface.lpVtbl = &synth_vtbl;
     obj->IKsControl_iface.lpVtbl = &synth_control_vtbl;
     obj->ref = 1;
-    /* fill in caps */
+
     obj->caps.dwSize = sizeof(DMUS_PORTCAPS);
     obj->caps.dwFlags = DMUS_PC_DLS | DMUS_PC_SOFTWARESYNTH | DMUS_PC_DIRECTSOUND | DMUS_PC_DLS2 | DMUS_PC_AUDIOPATH | DMUS_PC_WAVE;
     obj->caps.guidPort = CLSID_DirectMusicSynth;
@@ -762,8 +761,7 @@ HRESULT DMUSIC_CreateDirectMusicSynthImpl(REFIID riid, void **ppobj)
     obj->caps.dwEffectFlags = DMUS_EFFECT_REVERB;
     lstrcpyW(obj->caps.wszDescription, L"Microsoft Synthesizer");
 
-    hr = IDirectMusicSynth8_QueryInterface(&obj->IDirectMusicSynth8_iface, riid, ppobj);
-    IDirectMusicSynth8_Release(&obj->IDirectMusicSynth8_iface);
-
-    return hr;
+    TRACE("Created DirectMusicSynth %p\n", obj);
+    *ret_iface = (IUnknown *)&obj->IDirectMusicSynth8_iface;
+    return S_OK;
 }

dlls/dmsynth/synthsink.c

@@ -371,29 +371,27 @@ static const IKsControlVtbl synth_sink_control =
     synth_sink_control_KsEvent,
 };
 
-HRESULT DMUSIC_CreateDirectMusicSynthSinkImpl(REFIID riid, void **ret_iface)
+HRESULT synth_sink_create(IUnknown **ret_iface)
 {
     struct synth_sink *obj;
     HRESULT hr;
 
-    TRACE("(%s, %p)\n", debugstr_guid(riid), ret_iface);
+    TRACE("(%p)\n", ret_iface);
 
     *ret_iface = NULL;
-
     if (!(obj = calloc(1, sizeof(*obj)))) return E_OUTOFMEMORY;
     obj->IDirectMusicSynthSink_iface.lpVtbl = &synth_sink_vtbl;
     obj->IKsControl_iface.lpVtbl = &synth_sink_control;
     obj->ref = 1;
 
-    hr = CoCreateInstance(&CLSID_SystemClock, NULL, CLSCTX_INPROC_SERVER, &IID_IReferenceClock, (LPVOID*)&obj->latency_clock);
+    hr = CoCreateInstance(&CLSID_SystemClock, NULL, CLSCTX_INPROC_SERVER, &IID_IReferenceClock, (void **)&obj->latency_clock);
     if (FAILED(hr))
     {
         free(obj);
         return hr;
     }
 
-    hr = IDirectMusicSynthSink_QueryInterface(&obj->IDirectMusicSynthSink_iface, riid, ret_iface);
-    IDirectMusicSynthSink_Release(&obj->IDirectMusicSynthSink_iface);
-
-    return hr;
+    TRACE("Created DirectMusicSynthSink %p\n", obj);
+    *ret_iface = (IUnknown *)&obj->IDirectMusicSynthSink_iface;
+    return S_OK;
 }