diff options
Diffstat (limited to 'arts/kde/kaudioconverter.cc')
| -rw-r--r-- | arts/kde/kaudioconverter.cc | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/arts/kde/kaudioconverter.cc b/arts/kde/kaudioconverter.cc new file mode 100644 index 000000000..a5f1e8e43 --- /dev/null +++ b/arts/kde/kaudioconverter.cc @@ -0,0 +1,198 @@ + /* + + Copyright (C) 2002 Nikolas Zimmermann <wildfox@kde.org> + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public License + along with this library; see the file COPYING.LIB. If not, write to + the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, + Boston, MA 02110-1301, USA. + + */ + +#include "config.h" +#include "artskde.h" +#include "connect.h" +#include "flowsystem.h" +#include "audiosubsys.h" +#include "dynamicrequest.h" +#include "kdatarequest_impl.h" +#include "kioinputstream_impl.h" +#include "kaudioconverter.moc" + +#include <iostream> + +#include <qfile.h> +#include <qtimer.h> + +#include <kurl.h> +#include <kdebug.h> +#include <kmimetype.h> +#include <kapplication.h> + +using namespace std; + +KAudioConverter::KAudioConverter() +{ + m_incoming = 0; + m_started = false; +} + +KAudioConverter::~KAudioConverter() +{ + delete m_incoming; +} + +bool KAudioConverter::setup(int samplingRate) +{ + string backupAudioIO = Arts::AudioSubSystem::the()->audioIO(); + int backupSamplingRate = Arts::AudioSubSystem::the()->samplingRate(); + + Arts::AudioSubSystem::the()->audioIO("null"); + Arts::AudioSubSystem::the()->samplingRate(samplingRate); + + if(!Arts::AudioSubSystem::the()->open()) + { + Arts::AudioSubSystem::the()->audioIO(backupAudioIO); + Arts::AudioSubSystem::the()->samplingRate(backupSamplingRate); + + return false; + } + + return true; +} + +void KAudioConverter::slotMimeType(const QString &mimeType) +{ + m_mimeType = mimeType; + kapp->exit_loop(); +} + +void KAudioConverter::requestPlayObject(const KURL &url) +{ + string queryInterface = "Arts::PlayObject"; + + Arts::KIOInputStream inputStream; + + if(!url.isLocalFile()) + { + Arts::KIOInputStream_impl *inputStreamImpl = new Arts::KIOInputStream_impl(); + inputStream = Arts::KIOInputStream::_from_base(inputStreamImpl); + + QObject::connect(inputStreamImpl, SIGNAL(mimeTypeFound(const QString &)), SLOT(slotMimeType(const QString &))); + + inputStream.openURL(url.url().latin1()); + inputStream.streamStart(); + + // ugly hacks.. :/ + kapp->enter_loop(); + + queryInterface = "Arts::StreamPlayObject"; + } + else + { + KMimeType::Ptr mimetype = KMimeType::findByURL(url); + m_mimeType = mimetype->name(); + } + + Arts::TraderQuery query; + query.supports("Interface", queryInterface); + query.supports("MimeType", string(m_mimeType.latin1())); + + string objectType; + + vector<Arts::TraderOffer> *offers = query.query(); + if(!offers->empty()) + objectType = offers->front().interfaceName(); // first offer + + delete offers; + + if(objectType.empty()) + { + m_incoming = 0; + return; + } + + if(!url.isLocalFile()) + { + Arts::StreamPlayObject result = Arts::SubClass(objectType); + result.streamMedia(inputStream); + result._node()->start(); + + m_incoming = new KPlayObject(result, true); + } + else + { + Arts::PlayObject result = Arts::SubClass(objectType); + + if(result.loadMedia(string(QFile::encodeName(url.path())))) + { + result._node()->start(); + m_incoming = new KPlayObject(result, false); + } + else + m_incoming = 0; + } +} + +void KAudioConverter::start() +{ + if(m_started || !m_incoming) + return; + + m_started = true; + + emit rawStreamStart(); + + m_incoming->play(); + + Arts::KDataRequest_impl *requestImpl = new Arts::KDataRequest_impl(); + m_request = Arts::KDataRequest::_from_base(requestImpl); + + Arts::connect(m_incoming->object(), "left", m_request, "left"); + Arts::connect(m_incoming->object(), "right", m_request, "right"); + + QObject::connect(requestImpl, SIGNAL(newBlockSize(long)), SIGNAL(newBlockSize(long))); + QObject::connect(requestImpl, SIGNAL(newBlockPointer(long)), SIGNAL(newBlockPointer(long))); + QObject::connect(requestImpl, SIGNAL(newData()), SIGNAL(newData())); + + // Special mpeglib case + // TODO: needed at all?? + usleep(100000); + if(m_incoming->object()._base()->_isCompatibleWith("DecoderBaseObject")) + if(!Arts::DynamicRequest(m_incoming->object()).method("_set_blocking").param(true).invoke()) + cerr << "mpeglib, and blocking attribute can't be changed?" << endl; + + m_request.start(); + + // TODO: Maybe do this async, using QTimer::singleShot + // But jowenn i think jowenn is right -> this would + // lead to problems in slotNewData() when accessing the data + // (could already be overwritten...) + while(m_incoming->state() != Arts::posIdle) + m_request.goOn(); + + stop(); +} + +void KAudioConverter::stop() +{ + if(!m_started || !m_incoming) + return; + + m_incoming->halt(); + m_request.streamEnd(); + + m_started = false; + + emit rawStreamFinished(); +} |