1 files changed, 87 insertions, 0 deletions
diff --git a/src/VBox/Devices/Audio/DrvHostAudioDSoundMMNotifClient.h b/src/VBox/Devices/Audio/DrvHostAudioDSoundMMNotifClient.h
new file mode 100644
index 00000000..6c0ccc3b
--- /dev/null
+++ b/src/VBox/Devices/Audio/DrvHostAudioDSoundMMNotifClient.h
@@ -0,0 +1,87 @@
+/* $Id: DrvHostAudioDSoundMMNotifClient.h $ */
+/** @file
+ * Host audio driver - DSound - Implementation of the IMMNotificationClient interface to detect audio endpoint changes.
+ */
+
+/*
+ * Copyright (C) 2017-2023 Oracle and/or its affiliates.
+ *
+ * This file is part of VirtualBox base platform packages, as
+ * available from https://www.virtualbox.org.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, in version 3 of the
+ * License.
+ *
+ * This program 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
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses>.
+ *
+ * SPDX-License-Identifier: GPL-3.0-only
+ */
+
+#ifndef VBOX_INCLUDED_SRC_Audio_DrvHostAudioDSoundMMNotifClient_h
+#define VBOX_INCLUDED_SRC_Audio_DrvHostAudioDSoundMMNotifClient_h
+#ifndef RT_WITHOUT_PRAGMA_ONCE
+# pragma once
+#endif
+
+#include <iprt/critsect.h>
+#include <iprt/win/windows.h>
+#include <mmdeviceapi.h>
+
+#include <VBox/vmm/pdmaudioifs.h>
+
+
+class DrvHostAudioDSoundMMNotifClient : public IMMNotificationClient
+{
+public:
+
+    DrvHostAudioDSoundMMNotifClient(PPDMIHOSTAUDIOPORT pInterface, bool fDefaultIn, bool fDefaultOut);
+    virtual ~DrvHostAudioDSoundMMNotifClient();
+
+    HRESULT Initialize();
+
+    HRESULT Register(void);
+    void    Unregister(void);
+
+    /** @name IUnknown interface
+     * @{ */
+    IFACEMETHODIMP_(ULONG) Release();
+    /** @} */
+
+private:
+
+    bool                        m_fDefaultIn;
+    bool                        m_fDefaultOut;
+    bool                        m_fRegisteredClient;
+    IMMDeviceEnumerator        *m_pEnum;
+    IMMDevice                  *m_pEndpoint;
+
+    long                        m_cRef;
+
+    PPDMIHOSTAUDIOPORT          m_pIAudioNotifyFromHost;
+
+    /** @name IMMNotificationClient interface
+     * @{ */
+    IFACEMETHODIMP OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState);
+    IFACEMETHODIMP OnDeviceAdded(LPCWSTR pwstrDeviceId);
+    IFACEMETHODIMP OnDeviceRemoved(LPCWSTR pwstrDeviceId);
+    IFACEMETHODIMP OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDefaultDeviceId);
+    IFACEMETHODIMP OnPropertyValueChanged(LPCWSTR /*pwstrDeviceId*/, const PROPERTYKEY /*key*/) { return S_OK; }
+    /** @} */
+
+    /** @name IUnknown interface
+     * @{ */
+    IFACEMETHODIMP QueryInterface(const IID& iid, void** ppUnk);
+    IFACEMETHODIMP_(ULONG) AddRef();
+    /** @} */
+};
+
+#endif /* !VBOX_INCLUDED_SRC_Audio_DrvHostAudioDSoundMMNotifClient_h */
+