VirtualBox

source: vbox/trunk/src/VBox/Devices/Audio/VBoxMMNotificationClient.h@ 86692

Last change on this file since 86692 was 83239, checked in by vboxsync, 5 years ago

Audio/Win: Added ability to register/unregister the IMMNotificationClient interface at runtime.

  • Property svn:eol-style set to native
  • Property svn:keywords set to Author Date Id Revision
File size: 2.8 KB
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1/* $Id: VBoxMMNotificationClient.h 83239 2020-03-10 10:13:59Z vboxsync $ */
2/** @file
3 * VBoxMMNotificationClient.h - Implementation of the IMMNotificationClient interface
4 * to detect audio endpoint changes.
5 */
6
7/*
8 * Copyright (C) 2017-2020 Oracle Corporation
9 *
10 * This file is part of VirtualBox Open Source Edition (OSE), as
11 * available from http://www.virtualbox.org. This file is free software;
12 * you can redistribute it and/or modify it under the terms of the GNU
13 * General Public License (GPL) as published by the Free Software
14 * Foundation, in version 2 as it comes in the "COPYING" file of the
15 * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
16 * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
17 */
18
19#ifndef VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h
20#define VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h
21#ifndef RT_WITHOUT_PRAGMA_ONCE
22# pragma once
23#endif
24
25#include <iprt/critsect.h>
26#include <iprt/win/windows.h>
27
28/* Should fix warning in include\ks.h. */
29#ifndef _WIN64
30# ifdef RT_ARCH_X86
31# define _WIN64 1
32# else
33# define _WIN64 0
34# endif
35#endif
36
37#include <Mmdeviceapi.h>
38
39#include "DrvAudio.h"
40
41class VBoxMMNotificationClient : IMMNotificationClient
42{
43public:
44
45 VBoxMMNotificationClient();
46 virtual ~VBoxMMNotificationClient();
47
48 HRESULT Initialize();
49
50 HRESULT Register(void);
51 void Unregister(void);
52
53 int RegisterCallback(PPDMDRVINS pDrvIns, PFNPDMHOSTAUDIOCALLBACK pfnCallback);
54 void UnregisterCallback(void);
55
56 /** @name IUnknown interface
57 * @{ */
58 IFACEMETHODIMP_(ULONG) Release();
59 /** @} */
60
61private:
62
63 bool m_fRegisteredClient;
64 IMMDeviceEnumerator *m_pEnum;
65 IMMDevice *m_pEndpoint;
66
67 long m_cRef;
68
69 PPDMDRVINS m_pDrvIns;
70 PFNPDMHOSTAUDIOCALLBACK m_pfnCallback;
71
72 HRESULT AttachToDefaultEndpoint();
73 void DetachFromEndpoint();
74
75 void doCallback(void);
76
77 /** @name IMMNotificationClient interface
78 * @{ */
79 IFACEMETHODIMP OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState);
80 IFACEMETHODIMP OnDeviceAdded(LPCWSTR pwstrDeviceId);
81 IFACEMETHODIMP OnDeviceRemoved(LPCWSTR pwstrDeviceId);
82 IFACEMETHODIMP OnDefaultDeviceChanged(EDataFlow flow, ERole role, LPCWSTR pwstrDefaultDeviceId);
83 IFACEMETHODIMP OnPropertyValueChanged(LPCWSTR /*pwstrDeviceId*/, const PROPERTYKEY /*key*/) { return S_OK; }
84 IFACEMETHODIMP OnDeviceQueryRemove() { return S_OK; }
85 IFACEMETHODIMP OnDeviceQueryRemoveFailed() { return S_OK; }
86 IFACEMETHODIMP OnDeviceRemovePending() { return S_OK; }
87 /** @} */
88
89 /** @name IUnknown interface
90 * @{ */
91 IFACEMETHODIMP QueryInterface(const IID& iid, void** ppUnk);
92 IFACEMETHODIMP_(ULONG) AddRef();
93 /** @} */
94};
95#endif /* !VBOX_INCLUDED_SRC_Audio_VBoxMMNotificationClient_h */
96
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