dmband: Implement band track GUID_DownloadToAudioPath parameter.

dlls/dmband/bandtrack.c

@@ -193,7 +193,32 @@ static HRESULT WINAPI band_track_SetParam(IDirectMusicTrack8 *iface, REFGUID typ
     else if (IsEqualGUID(type, &GUID_Download))
         FIXME("GUID_Download not handled yet\n");
     else if (IsEqualGUID(type, &GUID_DownloadToAudioPath))
-        FIXME("GUID_DownloadToAudioPath not handled yet\n");
+    {
+        IDirectMusicPerformance *performance;
+        IDirectMusicAudioPath *audio_path;
+        IUnknown *object = param;
+        struct band_entry *entry;
+        HRESULT hr;
+
+        if (FAILED(hr = IDirectMusicAudioPath_QueryInterface(object, &IID_IDirectMusicPerformance8, (void **)&performance))
+                && SUCCEEDED(hr = IDirectMusicAudioPath_QueryInterface(object, &IID_IDirectMusicAudioPath, (void **)&audio_path)))
+        {
+            hr = IDirectMusicAudioPath_GetObjectInPath(audio_path, DMUS_PCHANNEL_ALL, DMUS_PATH_PERFORMANCE, 0,
+                    &GUID_All_Objects, 0, &IID_IDirectMusicPerformance8, (void **)&performance);
+            IDirectMusicAudioPath_Release(audio_path);
+        }
+
+        if (FAILED(hr))
+        {
+            WARN("Failed to get IDirectMusicPerformance from param %p\n", param);
+            return hr;
+        }
+
+        LIST_FOR_EACH_ENTRY(entry, &This->bands, struct band_entry, entry)
+            if (FAILED(hr = IDirectMusicBand_Download(entry->band, performance))) break;
+
+        IDirectMusicPerformance_Release(performance);
+    }
     else if (IsEqualGUID(type, &GUID_Enable_Auto_Download))
         FIXME("GUID_Enable_Auto_Download not handled yet\n");
     else if (IsEqualGUID(type, &GUID_IDirectMusicBand))