winegstreamer: Implement Get(Input/Output)CurrentType functions for audio converter transform.

dlls/winegstreamer/audioconvert.c

@@ -423,16 +423,64 @@ static HRESULT WINAPI audio_converter_SetOutputType(IMFTransform *iface, DWORD i
 
 static HRESULT WINAPI audio_converter_GetInputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 {
-    FIXME("%p, %u, %p.\n", iface, id, type);
+    struct audio_converter *converter = impl_audio_converter_from_IMFTransform(iface);
+    IMFMediaType *ret;
+    HRESULT hr;
 
-    return E_NOTIMPL;
+    TRACE("%p, %u, %p.\n", converter, id, type);
+
+    if (id != 0)
+        return MF_E_INVALIDSTREAMNUMBER;
+
+    if (FAILED(hr = MFCreateMediaType(&ret)))
+        return hr;
+
+    EnterCriticalSection(&converter->cs);
+
+    if (converter->input_type)
+        hr = IMFMediaType_CopyAllItems(converter->input_type, (IMFAttributes *)ret);
+    else
+        hr = MF_E_TRANSFORM_TYPE_NOT_SET;
+
+    LeaveCriticalSection(&converter->cs);
+
+    if (SUCCEEDED(hr))
+        *type = ret;
+    else
+        IMFMediaType_Release(ret);
+
+    return hr;
 }
 
 static HRESULT WINAPI audio_converter_GetOutputCurrentType(IMFTransform *iface, DWORD id, IMFMediaType **type)
 {
-    FIXME("%p, %u, %p.\n", iface, id, type);
+    struct audio_converter *converter = impl_audio_converter_from_IMFTransform(iface);
+    IMFMediaType *ret;
+    HRESULT hr;
 
-    return E_NOTIMPL;
+    TRACE("%p, %u, %p.\n", converter, id, type);
+
+    if (id != 0)
+        return MF_E_INVALIDSTREAMNUMBER;
+
+    if (FAILED(hr = MFCreateMediaType(&ret)))
+        return hr;
+
+    EnterCriticalSection(&converter->cs);
+
+    if (converter->output_type)
+        hr = IMFMediaType_CopyAllItems(converter->output_type, (IMFAttributes *)ret);
+    else
+        hr = MF_E_TRANSFORM_TYPE_NOT_SET;
+
+    LeaveCriticalSection(&converter->cs);
+
+    if (SUCCEEDED(hr))
+        *type = ret;
+    else
+        IMFMediaType_Release(ret);
+
+    return hr;
 }
 
 static HRESULT WINAPI audio_converter_GetInputStatus(IMFTransform *iface, DWORD id, DWORD *flags)