mirror of
https://github.com/voiceip/tinyphone
synced 2026-08-07 02:26:03 -04:00
145 lines
3.5 KiB
C++
145 lines
3.5 KiB
C++
/*
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* Copyright (C) 2011-2018 MicroSIP (http://www.microsip.org)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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//-----------------------------------------------------------
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// When the status of audio endpoint devices change, the
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// MMDevice module calls these methods to notify the client.
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//-----------------------------------------------------------
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#include <Mmdeviceapi.h>
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#include <Dbt.h>
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#include "global.h"
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#define SAFE_RELEASE(punk) \
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if ((punk) != NULL) \
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{ (punk)->Release(); (punk) = NULL; }
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class CMMNotificationClient : public IMMNotificationClient
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{
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LONG _cRef;
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IMMDeviceEnumerator *_pEnumerator;
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bool hasCallback;
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public:
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CMMNotificationClient() :
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_cRef(1),
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_pEnumerator(NULL),
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hasCallback(false)
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{
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HRESULT hr = S_OK;
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CoInitialize(NULL);
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if (_pEnumerator == NULL)
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{
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// Get enumerator for audio endpoint devices.
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hr = CoCreateInstance(__uuidof(MMDeviceEnumerator),
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NULL, CLSCTX_INPROC_SERVER,
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__uuidof(IMMDeviceEnumerator),
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(void**)&_pEnumerator);
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if (hr != S_OK) {
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_pEnumerator = NULL;
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} else {
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if (_pEnumerator->RegisterEndpointNotificationCallback(this) == S_OK) {
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hasCallback = true;
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}
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}
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}
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}
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~CMMNotificationClient()
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{
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if (hasCallback) {
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_pEnumerator->UnregisterEndpointNotificationCallback(this);
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}
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SAFE_RELEASE(_pEnumerator)
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CoUninitialize();
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}
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// IUnknown methods -- AddRef, Release, and QueryInterface
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ULONG STDMETHODCALLTYPE AddRef()
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{
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return InterlockedIncrement(&_cRef);
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}
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ULONG STDMETHODCALLTYPE Release()
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{
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ULONG ulRef = InterlockedDecrement(&_cRef);
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if (0 == ulRef)
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{
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delete this;
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}
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return ulRef;
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}
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HRESULT STDMETHODCALLTYPE QueryInterface(
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REFIID riid, VOID **ppvInterface)
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{
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if (IID_IUnknown == riid)
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{
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AddRef();
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*ppvInterface = (IUnknown*)this;
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}
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else if (__uuidof(IMMNotificationClient) == riid)
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{
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AddRef();
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*ppvInterface = (IMMNotificationClient*)this;
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}
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else
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{
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*ppvInterface = NULL;
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return E_NOINTERFACE;
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}
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return S_OK;
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}
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// Callbacks
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HRESULT STDMETHODCALLTYPE OnDefaultDeviceChanged(
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EDataFlow flow, ERole role,
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LPCWSTR pwstrDeviceId)
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{
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnDeviceAdded(LPCWSTR pwstrDeviceId)
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{
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return S_OK;
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};
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HRESULT STDMETHODCALLTYPE OnDeviceRemoved(LPCWSTR pwstrDeviceId)
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{
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnDeviceStateChanged(
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LPCWSTR pwstrDeviceId,
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DWORD dwNewState)
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{
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CWnd *pMainWnd = AfxGetApp()->m_pMainWnd;
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if (pMainWnd) {
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::PostMessage(pMainWnd->m_hWnd, WM_DEVICECHANGE, DBT_DEVNODES_CHANGED, 1);
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}
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return S_OK;
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}
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HRESULT STDMETHODCALLTYPE OnPropertyValueChanged(
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LPCWSTR pwstrDeviceId,
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const PROPERTYKEY key)
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{
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return S_OK;
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}
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};
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