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+/****************************************************************************
+**
+** 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;
+};
+
+