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// Copyright 2012-2021 The Mumble Developers. All rights reserved.
// Use of this source code is governed by a BSD-style license
// that can be found in the LICENSE file at the root of the
// Mumble source tree or at <https://www.mumble.info/LICENSE>.
#include "MainWindow.h"
#include "WASAPINotificationClient.h"
#include "Global.h"
#include <QtCore/QMutexLocker>
#include <boost/thread/once.hpp>
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::OnDefaultDeviceChanged(EDataFlow flow, ERole role,
LPCWSTR pwstrDefaultDevice) {
const QString device = QString::fromWCharArray(pwstrDefaultDevice);
qWarning() << "WASAPINotificationClient: Default device changed flow=" << flow << "role=" << role << "device"
<< device;
QMutexLocker lock(&listsMutex);
if (!usedDefaultDevices.empty() && role == eCommunications) {
restartAudio();
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::OnPropertyValueChanged(LPCWSTR pwstrDeviceId,
const PROPERTYKEY key) {
const QString device = QString::fromWCharArray(pwstrDeviceId);
const bool formatChanged = (key == PKEY_AudioEngine_DeviceFormat);
const bool channelConfigChanged = (key == PKEY_AudioEndpoint_PhysicalSpeakers);
QMutexLocker lock(&listsMutex);
if ((formatChanged || channelConfigChanged) && usedDevices.contains(device)) {
qWarning() << "WASAPINotificationClient: Property changed device=" << device
<< "formatChanged=" << formatChanged << "channelConfigChanged=" << channelConfigChanged;
restartAudio();
}
return S_OK;
}
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::OnDeviceAdded(LPCWSTR pwstrDeviceId) {
const QString device = QString::fromWCharArray(pwstrDeviceId);
qWarning() << "WASAPINotificationClient: Device added=" << device;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::OnDeviceRemoved(LPCWSTR pwstrDeviceId) {
const QString device = QString::fromWCharArray(pwstrDeviceId);
qWarning() << "WASAPINotificationClient: Device removed=" << device;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::OnDeviceStateChanged(LPCWSTR pwstrDeviceId, DWORD dwNewState) {
const QString device = QString::fromWCharArray(pwstrDeviceId);
qWarning() << "WASAPINotificationClient: Device state changed newState=" << dwNewState << "device=" << device;
return S_OK;
}
HRESULT STDMETHODCALLTYPE WASAPINotificationClient::QueryInterface(REFIID riid, VOID **ppvInterface) {
if (IID_IUnknown == riid) {
*ppvInterface = (IUnknown *) this;
AddRef();
} else if (__uuidof(IMMNotificationClient) == riid) {
*ppvInterface = (IMMNotificationClient *) this;
AddRef();
} else {
*ppvInterface = nullptr;
return E_NOINTERFACE;
}
return S_OK;
}
ULONG STDMETHODCALLTYPE WASAPINotificationClient::AddRef() {
return InterlockedIncrement(&_cRef);
}
ULONG STDMETHODCALLTYPE WASAPINotificationClient::Release() {
// We hold a ref to ourselves all the time (static singleton) so no
// need to clean ourselves up or anything.
ULONG ulRef = InterlockedDecrement(&_cRef);
Q_ASSERT(ulRef > 0);
return ulRef;
}
void WASAPINotificationClient::enlistDefaultDeviceAsUsed(LPCWSTR pwstrDefaultDevice) {
const QString device = QString::fromWCharArray(pwstrDefaultDevice);
QMutexLocker lock(&listsMutex);
if (!usedDefaultDevices.contains(device)) {
usedDefaultDevices.append(device);
_enlistDeviceAsUsed(device);
}
}
void WASAPINotificationClient::enlistDeviceAsUsed(LPCWSTR pwstrDevice) {
const QString device = QString::fromWCharArray(pwstrDevice);
QMutexLocker lock(&listsMutex);
_enlistDeviceAsUsed(device);
}
void WASAPINotificationClient::_enlistDeviceAsUsed(const QString &device) {
if (!usedDevices.contains(device)) {
usedDevices.append(device);
}
}
void WASAPINotificationClient::enlistDeviceAsUsed(const QString &device) {
QMutexLocker lock(&listsMutex);
_enlistDeviceAsUsed(device);
}
void WASAPINotificationClient::unlistDevice(LPCWSTR pwstrDevice) {
const QString device = QString::fromWCharArray(pwstrDevice);
QMutexLocker lock(&listsMutex);
usedDevices.removeOne(device);
usedDefaultDevices.removeOne(device);
}
void WASAPINotificationClient::clearUsedDefaultDeviceList() {
QMutexLocker lock(&listsMutex);
usedDefaultDevices.clear();
}
void WASAPINotificationClient::_clearUsedDeviceLists() {
usedDefaultDevices.clear();
usedDevices.clear();
}
void WASAPINotificationClient::clearUsedDeviceLists() {
QMutexLocker lock(&listsMutex);
_clearUsedDeviceLists();
}
void WASAPINotificationClient::doGetOnce() {
(void) WASAPINotificationClient::doGet();
}
WASAPINotificationClient &WASAPINotificationClient::doGet() {
static WASAPINotificationClient instance;
return instance;
}
static boost::once_flag notification_client_init_once = BOOST_ONCE_INIT;
WASAPINotificationClient &WASAPINotificationClient::get() {
// Hacky way of making sure we get a thread-safe yet lazy initialization of the static.
boost::call_once(&WASAPINotificationClient::doGetOnce, notification_client_init_once);
return doGet();
}
WASAPINotificationClient::WASAPINotificationClient() : QObject(), pEnumerator(0), listsMutex() {
AddRef(); // Static singleton, always has a self-reference
HRESULT hr = CoCreateInstance(__uuidof(MMDeviceEnumerator), nullptr, CLSCTX_ALL, __uuidof(IMMDeviceEnumerator),
reinterpret_cast< void ** >(&pEnumerator));
if (!pEnumerator || FAILED(hr)) {
if (pEnumerator) {
pEnumerator->Release();
pEnumerator = 0;
}
qWarning() << "WASAPINotificationClient: Failed to create enumerator, will not receive notifications";
return;
}
Global::get().mw->connect(this, SIGNAL(doResetAudio()), SLOT(onResetAudio()), Qt::QueuedConnection);
pEnumerator->RegisterEndpointNotificationCallback(this);
}
WASAPINotificationClient::~WASAPINotificationClient() {
if (pEnumerator)
pEnumerator->Release();
}
void WASAPINotificationClient::restartAudio() {
qWarning("WASAPINotificationClient: Triggering audio reset");
_clearUsedDeviceLists();
emit doResetAudio();
}
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