| 1 | /* $Id: VBoxMMNotificationClient.h 83238 2020-03-10 09:57:28Z vboxsync $ */
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| 2 | /** @file
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| 3 | * VBoxMMNotificationClient.h - Implementation of the IMMNotificationClient interface
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| 4 | * to detect audio endpoint changes.
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| 5 | */
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| 6 |
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| 7 | /*
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| 8 | * Copyright (C) 2017-2020 Oracle Corporation
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| 9 | *
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| 10 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | * available from http://www.virtualbox.org. This file is free software;
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| 12 | * you can redistribute it and/or modify it under the terms of the GNU
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| 13 | * General Public License (GPL) as published by the Free Software
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| 14 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | */
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| 18 |
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| 19 | #ifndef VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h
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| 20 | #define VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h
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| 21 | #ifndef RT_WITHOUT_PRAGMA_ONCE
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| 22 | # pragma once
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| 23 | #endif
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| 24 |
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| 25 | #include <iprt/critsect.h>
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| 26 | #include <iprt/win/windows.h>
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| 27 |
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| 28 | /* Should fix warning in include\ks.h. */
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| 29 | #ifndef _WIN64
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| 30 | # ifdef RT_ARCH_X86
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| 31 | # define _WIN64 1
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| 32 | # else
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| 33 | # define _WIN64 0
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| 34 | # endif
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| 35 | #endif
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| 36 |
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| 37 | #include <Mmdeviceapi.h>
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| 38 |
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| 39 | #include "DrvAudio.h"
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| 40 |
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| 41 | class VBoxMMNotificationClient : IMMNotificationClient
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| 42 | {
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| 43 | public:
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| 44 |
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| 45 | VBoxMMNotificationClient();
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| 46 | virtual ~VBoxMMNotificationClient();
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| 47 |
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| 48 | HRESULT Initialize();
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| 49 | int RegisterCallback(PPDMDRVINS pDrvIns, PFNPDMHOSTAUDIOCALLBACK pfnCallback);
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| 50 | void UnregisterCallback(void);
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| 51 | void Dispose();
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| 52 |
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| 53 | /** @name IUnknown interface
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| 54 | * @{ */
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| 55 | IFACEMETHODIMP_(ULONG) Release();
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| 56 | /** @} */
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| 57 |
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| 58 | private:
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| 59 |
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| 60 | bool m_fRegisteredClient;
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| 61 | IMMDeviceEnumerator *m_pEnum;
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| 62 | IMMDevice *m_pEndpoint;
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| 63 |
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| 64 | long m_cRef;
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| 65 |
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| 66 | PPDMDRVINS m_pDrvIns;
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| 67 | PFNPDMHOSTAUDIOCALLBACK m_pfnCallback;
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| 68 |
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| 69 | HRESULT AttachToDefaultEndpoint();
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| 70 | void DetachFromEndpoint();
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| 71 |
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| 72 | void doCallback(void);
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| 73 |
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| 74 | /** @name IMMNotificationClient interface
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| 75 | * @{ */
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| 76 | IFACEMETHODIMP OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState);
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| 77 | IFACEMETHODIMP OnDeviceAdded(LPCWSTR pwstrDeviceId);
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| 78 | IFACEMETHODIMP OnDeviceRemoved(LPCWSTR pwstrDeviceId);
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| 79 | IFACEMETHODIMP OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDefaultDeviceId);
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| 80 | IFACEMETHODIMP OnPropertyValueChanged(LPCWSTR /*pwstrDeviceId*/, const PROPERTYKEY /*key*/) { return S_OK; }
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| 81 | IFACEMETHODIMP OnDeviceQueryRemove() { return S_OK; }
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| 82 | IFACEMETHODIMP OnDeviceQueryRemoveFailed() { return S_OK; }
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| 83 | IFACEMETHODIMP OnDeviceRemovePending() { return S_OK; }
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| 84 | /** @} */
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| 85 |
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| 86 | /** @name IUnknown interface
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| 87 | * @{ */
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| 88 | IFACEMETHODIMP QueryInterface(const IID& iid, void** ppUnk);
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| 89 | IFACEMETHODIMP_(ULONG) AddRef();
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| 90 | /** @} */
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| 91 | };
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| 92 | #endif /* !VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h */
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| 93 |
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