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Diffstat (limited to 'examples/mobile/quickhit/ga_src/GEAudioOut.cpp')
-rw-r--r-- | examples/mobile/quickhit/ga_src/GEAudioOut.cpp | 145 |
1 files changed, 145 insertions, 0 deletions
diff --git a/examples/mobile/quickhit/ga_src/GEAudioOut.cpp b/examples/mobile/quickhit/ga_src/GEAudioOut.cpp new file mode 100644 index 00000000..679a159f --- /dev/null +++ b/examples/mobile/quickhit/ga_src/GEAudioOut.cpp @@ -0,0 +1,145 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the demonstration applications of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** This file may be used under the terms of the GNU Lesser General Public +** License version 2.1 as published by the Free Software Foundation and +** appearing in the file LICENSE.LGPL included in the packaging of this +** file. Please review the following information to ensure the GNU Lesser +** General Public License version 2.1 requirements will be met: +** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain additional +** rights. These rights are described in the Nokia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU General +** Public License version 3.0 as published by the Free Software Foundation +** and appearing in the file LICENSE.GPL included in the packaging of this +** file. Please review the following information to ensure the GNU General +** Public License version 3.0 requirements will be met: +** http://www.gnu.org/copyleft/gpl.html. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtCore/qstring.h> +#include <QAudioOutput> + +#include "GEAudioOut.h" + +using namespace GE; +//using namespace QTM_NAMESPACE; + +/* +#ifndef Q_OS_WIN32 +QTM_USE_NAMESPACE +#endif +*/ + +const int CHANNELS = 2; +const QString CODEC = "audio/pcm"; +const QAudioFormat::Endian BYTEORDER = QAudioFormat::LittleEndian; +const QAudioFormat::SampleType SAMTYPE = QAudioFormat::SignedInt; + + + +AudioOut::AudioOut( QObject *parent, GE::IAudioSource *source ) : QThread(parent) { // qobject + m_source = source; + QAudioFormat format; + format.setFrequency(AUDIO_FREQUENCY); + format.setChannels(CHANNELS); + format.setSampleSize(AUDIO_SAMPLE_BITS); + format.setCodec(CODEC); + format.setByteOrder(BYTEORDER); + format.setSampleType(SAMTYPE); + + QAudioDeviceInfo info(QAudioDeviceInfo::defaultOutputDevice()); + if (!info.isFormatSupported(format)) + format = info.nearestFormat(format); + + + m_audioOutput = new QAudioOutput(info,format); + +#ifdef Q_WS_MAEMO_5 + m_audioOutput->setBufferSize(20000); + m_sendBufferSize = 5000; +#else + m_audioOutput->setBufferSize(16000); + m_sendBufferSize = 4000; +#endif + + m_outTarget = m_audioOutput->start(); + + + m_sendBuffer = new AUDIO_SAMPLE_TYPE[ m_sendBufferSize ]; + m_samplesMixed = 0; + + m_runstate=0; + +#ifndef Q_OS_SYMBIAN + start(); +#else + m_audioOutput->setNotifyInterval(5); + connect(m_audioOutput,SIGNAL(notify()),SLOT(audioNotify())); +#endif + +}; + + +AudioOut::~AudioOut() { + if (m_runstate==0) m_runstate = 1; + if (QThread::isRunning() == false) m_runstate = 2; + while (m_runstate!=2) { msleep(50); } // wait until the thread is finished + m_audioOutput->stop(); + delete m_audioOutput; + delete [] m_sendBuffer; +}; + + +void AudioOut::audioNotify() { + tick(); +}; + +void AudioOut::tick() { + // fill data to buffer as much as free space is available.. + int samplesToWrite = m_audioOutput->bytesFree() / (CHANNELS*AUDIO_SAMPLE_BITS/8); + samplesToWrite*=2; + + if (samplesToWrite > m_sendBufferSize) samplesToWrite = m_sendBufferSize; + if (samplesToWrite<=0) return; + int mixedSamples = m_source->pullAudio( m_sendBuffer, samplesToWrite ); + m_outTarget->write( (char*)m_sendBuffer, mixedSamples*2 ); + +}; + + +void AudioOut::run() { + if (!m_source) { m_runstate=2; return; } + int sleepTime = m_sendBufferSize * 340 / AUDIO_FREQUENCY; + if (sleepTime<2) sleepTime = 2; + + while (m_runstate==0) { + tick(); + msleep(sleepTime); + }; + m_runstate = 2; +}; + + |