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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "directshowaudioendpointcontrol.h"
#include "directshowglobal.h"
#include "directshowplayerservice.h"
QT_BEGIN_NAMESPACE
DirectShowAudioEndpointControl::DirectShowAudioEndpointControl(
DirectShowPlayerService *service, QObject *parent)
: QAudioOutputSelectorControl(parent)
, m_service(service)
, m_bindContext(0)
, m_deviceEnumerator(0)
{
if (CreateBindCtx(0, &m_bindContext) == S_OK) {
m_deviceEnumerator = com_new<ICreateDevEnum>(CLSID_SystemDeviceEnum);
updateEndpoints();
setActiveOutput(m_defaultEndpoint);
}
}
DirectShowAudioEndpointControl::~DirectShowAudioEndpointControl()
{
for (IMoniker *moniker : qAsConst(m_devices))
moniker->Release();
if (m_bindContext)
m_bindContext->Release();
if (m_deviceEnumerator)
m_deviceEnumerator->Release();
}
QList<QString> DirectShowAudioEndpointControl::availableOutputs() const
{
return m_devices.keys();
}
QString DirectShowAudioEndpointControl::outputDescription(const QString &name) const
{
#ifdef __IPropertyBag_INTERFACE_DEFINED__
QString description;
if (IMoniker *moniker = m_devices.value(name, 0)) {
IPropertyBag *propertyBag = 0;
if (SUCCEEDED(moniker->BindToStorage(
0, 0, IID_IPropertyBag, reinterpret_cast<void **>(&propertyBag)))) {
VARIANT name;
VariantInit(&name);
if (SUCCEEDED(propertyBag->Read(L"FriendlyName", &name, 0)))
description = QString::fromWCharArray(name.bstrVal);
VariantClear(&name);
propertyBag->Release();
}
}
return description;
#else
return name.section(QLatin1Char('\\'), -1);
#endif
}
QString DirectShowAudioEndpointControl::defaultOutput() const
{
return m_defaultEndpoint;
}
QString DirectShowAudioEndpointControl::activeOutput() const
{
return m_activeEndpoint;
}
void DirectShowAudioEndpointControl::setActiveOutput(const QString &name)
{
if (m_activeEndpoint == name)
return;
if (IMoniker *moniker = m_devices.value(name, 0)) {
IBaseFilter *filter = 0;
if (moniker->BindToObject(
m_bindContext,
0,
IID_IBaseFilter,
reinterpret_cast<void **>(&filter)) == S_OK) {
m_service->setAudioOutput(filter);
filter->Release();
}
}
}
void DirectShowAudioEndpointControl::updateEndpoints()
{
IMalloc *oleMalloc = 0;
if (m_deviceEnumerator && CoGetMalloc(1, &oleMalloc) == S_OK) {
IEnumMoniker *monikers = 0;
if (m_deviceEnumerator->CreateClassEnumerator(
CLSID_AudioRendererCategory, &monikers, 0) == S_OK) {
for (IMoniker *moniker = 0; monikers->Next(1, &moniker, 0) == S_OK; moniker->Release()) {
OLECHAR *string = 0;
if (moniker->GetDisplayName(m_bindContext, 0, &string) == S_OK) {
QString deviceId = QString::fromWCharArray(string);
oleMalloc->Free(string);
moniker->AddRef();
m_devices.insert(deviceId, moniker);
if (m_defaultEndpoint.isEmpty()
|| deviceId.endsWith(QLatin1String("Default DirectSound Device"))) {
m_defaultEndpoint = deviceId;
}
}
}
monikers->Release();
}
oleMalloc->Release();
}
}
QT_END_NAMESPACE
|
