/src/3rdparty/phonon/ds9/backend.cpp
C++ | 351 lines | 314 code | 19 blank | 18 comment | 2 complexity | b8ff2572f44923f739072f905d3f9fd7 MD5 | raw file
Possible License(s): LGPL-3.0, BSD-3-Clause, CC0-1.0, CC-BY-SA-4.0, LGPL-2.1, GPL-3.0, Apache-2.0, LGPL-2.0
- /* This file is part of the KDE project.
- Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
- This library is free software: you can redistribute it and/or modify
- it under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation, either version 2.1 or 3 of the License.
- This library is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with this library. If not, see <http://www.gnu.org/licenses/>.
- */
- #include "backend.h"
- #include "backendnode.h"
- #include "audiooutput.h"
- #include "effect.h"
- #include "mediaobject.h"
- #include "videowidget.h"
- #include "volumeeffect.h"
- //windows specific (DirectX Media Object)
- #include <dmo.h>
- #include <QtCore/QSettings>
- #include <QtCore/QSet>
- #include <QtCore/QVariant>
- #include <QtCore/QtPlugin>
- QT_BEGIN_NAMESPACE
- Q_EXPORT_PLUGIN2(phonon_ds9, Phonon::DS9::Backend);
- namespace Phonon
- {
- namespace DS9
- {
- QMutex *Backend::directShowMutex = 0;
- bool Backend::AudioMoniker::operator==(const AudioMoniker &other)
- {
- return other->IsEqual(*this) == S_OK;
- }
- Backend::Backend(QObject *parent, const QVariantList &)
- : QObject(parent)
- {
- directShowMutex = &m_directShowMutex;
- ::CoInitialize(0);
- //registering meta types
- qRegisterMetaType<HRESULT>("HRESULT");
- qRegisterMetaType<Graph>("Graph");
- }
- Backend::~Backend()
- {
- m_audioOutputs.clear();
- m_audioEffects.clear();
- ::CoUninitialize();
- directShowMutex = 0;
- }
- QObject *Backend::createObject(BackendInterface::Class c, QObject *parent, const QList<QVariant> &args)
- {
- switch (c)
- {
- case MediaObjectClass:
- return new MediaObject(parent);
- case AudioOutputClass:
- return new AudioOutput(this, parent);
- #ifndef QT_NO_PHONON_EFFECT
- case EffectClass:
- return new Effect(m_audioEffects[ args[0].toInt() ], parent);
- #endif //QT_NO_PHONON_EFFECT
- #ifndef QT_NO_PHONON_VIDEO
- case VideoWidgetClass:
- return new VideoWidget(qobject_cast<QWidget *>(parent));
- #endif //QT_NO_PHONON_VIDEO
- #ifndef QT_NO_PHONON_VOLUMEFADEREFFECT
- case VolumeFaderEffectClass:
- return new VolumeEffect(parent);
- #endif //QT_NO_PHONON_VOLUMEFADEREFFECT
- default:
- return 0;
- }
- }
- bool Backend::supportsVideo() const
- {
- #ifndef QT_NO_PHONON_VIDEO
- return true;
- #else
- return false;
- #endif //QT_NO_PHONON_VIDEO
- }
- QStringList Backend::availableMimeTypes() const
- {
- QStringList ret;
- {
- QSettings settings(QLatin1String("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Multimedia\\mplayer2\\mime types"), QSettings::NativeFormat);
- ret += settings.childGroups();
- }
- {
- QSettings settings(QLatin1String("HKEY_LOCAL_MACHINE\\SOFTWARE\\Microsoft\\Multimedia\\wmplayer\\mime types"), QSettings::NativeFormat);
- ret += settings.childGroups();
- }
- ret.removeDuplicates();
- ret.replaceInStrings("\\", "/");
- qSort(ret);
- return ret;
- }
- Filter Backend::getAudioOutputFilter(int index) const
- {
- Filter ret;
- if (index >= 0 && index < m_audioOutputs.count()) {
- m_audioOutputs.at(index)->BindToObject(0, 0, IID_IBaseFilter, reinterpret_cast<void**>(&ret));
- } else {
- //just return the default audio renderer (not directsound)
- ret = Filter(CLSID_AudioRender, IID_IBaseFilter);
- }
- return ret;
- }
- QList<int> Backend::objectDescriptionIndexes(Phonon::ObjectDescriptionType type) const
- {
- QMutexLocker locker(&m_directShowMutex);
- QList<int> ret;
- switch(type)
- {
- case Phonon::AudioOutputDeviceType:
- {
- #ifdef Q_OS_WINCE
- ret << 0; // only one audio device with index 0
- #else
- ComPointer<ICreateDevEnum> devEnum(CLSID_SystemDeviceEnum, IID_ICreateDevEnum);
- if (!devEnum) {
- return ret; //it is impossible to enumerate the devices
- }
- ComPointer<IEnumMoniker> enumMon;
- HRESULT hr = devEnum->CreateClassEnumerator(CLSID_AudioRendererCategory, enumMon.pparam(), 0);
- if (FAILED(hr)) {
- break;
- }
- AudioMoniker mon;
- //let's reorder the devices so that directshound appears first
- int nbds = 0; //number of directsound devices
- while (S_OK == enumMon->Next(1, mon.pparam(), 0)) {
- LPOLESTR str = 0;
- mon->GetDisplayName(0,0,&str);
- const QString name = QString::fromWCharArray(str);
- ComPointer<IMalloc> alloc;
- ::CoGetMalloc(1, alloc.pparam());
- alloc->Free(str);
- int insert_pos = 0;
- if (!m_audioOutputs.contains(mon)) {
- insert_pos = m_audioOutputs.count();
- m_audioOutputs.append(mon);
- } else {
- insert_pos = m_audioOutputs.indexOf(mon);
- }
- if (name.contains(QLatin1String("DirectSound"))) {
- ret.insert(nbds++, insert_pos);
- } else {
- ret.append(insert_pos);
- }
- }
- #endif
- break;
- }
- #ifndef QT_NO_PHONON_EFFECT
- case Phonon::EffectType:
- {
- m_audioEffects.clear();
- ComPointer<IEnumDMO> enumDMO;
- HRESULT hr = ::DMOEnum(DMOCATEGORY_AUDIO_EFFECT, DMO_ENUMF_INCLUDE_KEYED, 0, 0, 0, 0, enumDMO.pparam());
- if (SUCCEEDED(hr)) {
- CLSID clsid;
- while (S_OK == enumDMO->Next(1, &clsid, 0, 0)) {
- ret += m_audioEffects.count();
- m_audioEffects.append(clsid);
- }
- }
- break;
- }
- break;
- #endif //QT_NO_PHONON_EFFECT
- default:
- break;
- }
- return ret;
- }
- QHash<QByteArray, QVariant> Backend::objectDescriptionProperties(Phonon::ObjectDescriptionType type, int index) const
- {
- QMutexLocker locker(&m_directShowMutex);
- QHash<QByteArray, QVariant> ret;
- switch (type)
- {
- case Phonon::AudioOutputDeviceType:
- {
- #ifdef Q_OS_WINCE
- ret["name"] = QLatin1String("default audio device");
- #else
- const AudioMoniker &mon = m_audioOutputs[index];
- LPOLESTR str = 0;
- HRESULT hr = mon->GetDisplayName(0,0, &str);
- if (SUCCEEDED(hr)) {
- QString name = QString::fromWCharArray(str);
- ComPointer<IMalloc> alloc;
- ::CoGetMalloc(1, alloc.pparam());
- alloc->Free(str);
- ret["name"] = name.mid(name.indexOf('\\') + 1);
- }
- #endif
- }
- break;
- #ifndef QT_NO_PHONON_EFFECT
- case Phonon::EffectType:
- {
- WCHAR name[80]; // 80 is clearly stated in the MSDN doc
- HRESULT hr = ::DMOGetName(m_audioEffects[index], name);
- if (SUCCEEDED(hr)) {
- ret["name"] = QString::fromWCharArray(name);
- }
- }
- break;
- #endif //QT_NO_PHONON_EFFECT
- default:
- break;
- }
- return ret;
- }
- bool Backend::endConnectionChange(QSet<QObject *> objects)
- {
- //end of a transaction
- for(QSet<QObject *>::const_iterator it = objects.begin(); it != objects.end(); ++it) {
- if (BackendNode *node = qobject_cast<BackendNode*>(*it)) {
- MediaObject *mo = node->mediaObject();
- if (mo) {
- switch(mo->transactionState)
- {
- case Phonon::ErrorState:
- case Phonon::StoppedState:
- case Phonon::LoadingState:
- //nothing to do
- break;
- case Phonon::PausedState:
- mo->transactionState = Phonon::StoppedState;
- mo->pause();
- break;
- default:
- mo->transactionState = Phonon::StoppedState;
- mo->play();
- break;
- }
- if (mo->state() == Phonon::ErrorState)
- return false;
- }
- }
- }
- return true;
- }
- bool Backend::startConnectionChange(QSet<QObject *> objects)
- {
- //let's save the state of the graph (before we stop it)
- for(QSet<QObject *>::const_iterator it = objects.begin(); it != objects.end(); ++it) {
- if (BackendNode *node = qobject_cast<BackendNode*>(*it)) {
- if (MediaObject *mo = node->mediaObject()) {
- if (mo->state() != Phonon::StoppedState) {
- mo->transactionState = mo->state();
- mo->ensureStopped(); //we have to stop the graph..
- if (mo->state() == Phonon::ErrorState)
- return false;
- }
- }
- }
- }
- return true;
- }
- bool Backend::connectNodes(QObject *_source, QObject *_sink)
- {
- BackendNode *source = qobject_cast<BackendNode*>(_source);
- if (!source) {
- return false;
- }
- BackendNode *sink = qobject_cast<BackendNode*>(_sink);
- if (!sink) {
- return false;
- }
- //setting the graph if needed
- if (source->mediaObject() == 0 && sink->mediaObject() == 0) {
- //error: no graph selected
- return false;
- } else if (source->mediaObject() && source->mediaObject() != sink->mediaObject()) {
- //this' graph becomes the common one
- source->mediaObject()->grabNode(sink);
- } else if (source->mediaObject() == 0) {
- //sink's graph becomes the common one
- sink->mediaObject()->grabNode(source);
- }
- return source->mediaObject()->connectNodes(source, sink);
- }
- bool Backend::disconnectNodes(QObject *_source, QObject *_sink)
- {
- BackendNode *source = qobject_cast<BackendNode*>(_source);
- if (!source) {
- return false;
- }
- BackendNode *sink = qobject_cast<BackendNode*>(_sink);
- if (!sink) {
- return false;
- }
- return source->mediaObject() == 0 ||
- source->mediaObject()->disconnectNodes(source, sink);
- }
- }
- }
- QT_END_NAMESPACE
- #include "moc_backend.cpp"