Create Mediaservices lib, separate from Multimedia.

(cherry picked from commit e85223d233c0e1d6beca748332b8fbaba3ebbf2d)

1 files changed, 0 insertions, 780 deletions

diff --git a/src/multimedia/audio/qaudiooutput_alsa_p.cpp b/src/multimedia/audio/qaudiooutput_alsa_p.cpp
deleted file mode 100644
index cf3726b..0000000
--- a/src/multimedia/audio/qaudiooutput_alsa_p.cpp
+++ /dev/null
@@ -1,780 +0,0 @@
-/****************************************************************************
-**
-** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the QtMultimedia module of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** No Commercial Usage
-** This file contains pre-release code and may not be distributed.
-** You may use this file in accordance with the terms and conditions
-** contained in the Technology Preview License Agreement accompanying
-** this package.
-**
-** GNU Lesser General Public License Usage
-** Alternatively, 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.
-**
-** If you have questions regarding the use of this file, please contact
-** Nokia at qt-info@nokia.com.
-**
-**
-**
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-//
-//  W A R N I N G
-//  -------------
-//
-// This file is not part of the Qt API.  It exists for the convenience
-// of other Qt classes.  This header file may change from version to
-// version without notice, or even be removed.
-//
-// We mean it.
-//
-
-#include <QtCore/qcoreapplication.h>
-#include "qaudiooutput_alsa_p.h"
-#include "qaudiodeviceinfo_alsa_p.h"
-
-QT_BEGIN_NAMESPACE
-
-//#define DEBUG_AUDIO 1
-
-static const int minimumIntervalTime = 50;
-
-QAudioOutputPrivate::QAudioOutputPrivate(const QByteArray &device, const QAudioFormat& audioFormat):
-    settings(audioFormat)
-{
-    bytesAvailable = 0;
-    handle = 0;
-    ahandler = 0;
-    access = SND_PCM_ACCESS_RW_INTERLEAVED;
-    pcmformat = SND_PCM_FORMAT_S16;
-    buffer_frames = 0;
-    period_frames = 0;
-    buffer_size = 0;
-    period_size = 0;
-    buffer_time = 100000;
-    period_time = 20000;
-    totalTimeValue = 0;
-    intervalTime = 1000;
-    audioBuffer = 0;
-    errorState = QAudio::NoError;
-    deviceState = QAudio::StoppedState;
-    audioSource = 0;
-    pullMode = true;
-    resuming = false;
-    opened = false;
-
-    QStringList list1 = QString(QLatin1String(device)).split(QLatin1String(":"));
-    m_device = QByteArray(list1.at(0).toLocal8Bit().constData());
-
-    timer = new QTimer(this);
-    connect(timer,SIGNAL(timeout()),SLOT(userFeed()));
-}
-
-QAudioOutputPrivate::~QAudioOutputPrivate()
-{
-    close();
-    disconnect(timer, SIGNAL(timeout()));
-    QCoreApplication::processEvents();
-    delete timer;
-}
-
-QAudio::Error QAudioOutputPrivate::error() const
-{
-    return errorState;
-}
-
-QAudio::State QAudioOutputPrivate::state() const
-{
-    return deviceState;
-}
-
-void QAudioOutputPrivate::async_callback(snd_async_handler_t *ahandler)
-{
-    QAudioOutputPrivate* audioOut;
-
-    audioOut = static_cast<QAudioOutputPrivate*>
-        (snd_async_handler_get_callback_private(ahandler));
-
-    if((audioOut->deviceState==QAudio::ActiveState)||(audioOut->resuming))
-        audioOut->feedback();
-}
-
-int QAudioOutputPrivate::xrun_recovery(int err)
-{
-    int  count = 0;
-    bool reset = false;
-
-    if(err == -EPIPE) {
-        errorState = QAudio::UnderrunError;
-        err = snd_pcm_prepare(handle);
-        if(err < 0)
-            reset = true;
-
-    } else if((err == -ESTRPIPE)||(err == -EIO)) {
-        errorState = QAudio::IOError;
-        while((err = snd_pcm_resume(handle)) == -EAGAIN){
-            usleep(100);
-            count++;
-            if(count > 5) {
-                reset = true;
-                break;
-            }
-        }
-        if(err < 0) {
-            err = snd_pcm_prepare(handle);
-            if(err < 0)
-                reset = true;
-        }
-    }
-    if(reset) {
-        close();
-        open();
-        snd_pcm_prepare(handle);
-        return 0;
-    }
-    return err;
-}
-
-int QAudioOutputPrivate::setFormat()
-{
-    snd_pcm_format_t pcmformat = SND_PCM_FORMAT_S16;
-
-    if(settings.sampleSize() == 8) {
-        pcmformat = SND_PCM_FORMAT_U8;
-
-    } else if(settings.sampleSize() == 16) {
-        if(settings.sampleType() == QAudioFormat::SignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_S16_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_S16_BE;
-        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_U16_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_U16_BE;
-        }
-    } else if(settings.sampleSize() == 24) {
-        if(settings.sampleType() == QAudioFormat::SignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_S24_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_S24_BE;
-        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_U24_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_U24_BE;
-        }
-    } else if(settings.sampleSize() == 32) {
-        if(settings.sampleType() == QAudioFormat::SignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_S32_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_S32_BE;
-        } else if(settings.sampleType() == QAudioFormat::UnSignedInt) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_U32_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_U32_BE;
-        } else if(settings.sampleType() == QAudioFormat::Float) {
-            if(settings.byteOrder() == QAudioFormat::LittleEndian)
-                pcmformat = SND_PCM_FORMAT_FLOAT_LE;
-            else
-                pcmformat = SND_PCM_FORMAT_FLOAT_BE;
-        }
-    } else if(settings.sampleSize() == 64) {
-        if(settings.byteOrder() == QAudioFormat::LittleEndian)
-            pcmformat = SND_PCM_FORMAT_FLOAT64_LE;
-        else
-            pcmformat = SND_PCM_FORMAT_FLOAT64_BE;
-    }
-
-    return snd_pcm_hw_params_set_format( handle, hwparams, pcmformat);
-}
-
-QIODevice* QAudioOutputPrivate::start(QIODevice* device)
-{
-    if(deviceState != QAudio::StoppedState)
-        deviceState = QAudio::StoppedState;
-
-    errorState = QAudio::NoError;
-
-    // Handle change of mode
-    if(audioSource && pullMode && !device) {
-        // pull -> push
-        close();
-        audioSource = 0;
-    } else if(audioSource && !pullMode && device) {
-        // push -> pull
-        close();
-        delete audioSource;
-        audioSource = 0;
-    }
-
-    if(device) {
-        //set to pull mode
-        pullMode = true;
-        audioSource = device;
-        deviceState = QAudio::ActiveState;
-    } else {
-        //set to push mode
-        if(!audioSource) {
-            audioSource = new OutputPrivate(this);
-            audioSource->open(QIODevice::WriteOnly|QIODevice::Unbuffered);
-        }
-        pullMode = false;
-        deviceState = QAudio::IdleState;
-    }
-
-    open();
-
-    emit stateChanged(deviceState);
-
-    return audioSource;
-}
-
-void QAudioOutputPrivate::stop()
-{
-    if(deviceState == QAudio::StoppedState)
-        return;
-    errorState = QAudio::NoError;
-    deviceState = QAudio::StoppedState;
-    close();
-    emit stateChanged(deviceState);
-}
-
-bool QAudioOutputPrivate::open()
-{
-    if(opened)
-        return true;
-
-#ifdef DEBUG_AUDIO
-    QTime now(QTime::currentTime());
-    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :open()";
-#endif
-    timeStamp.restart();
-    elapsedTimeOffset = 0;
-
-    int dir;
-    int err=-1;
-    int count=0;
-    unsigned int freakuency=settings.frequency();
-
-    QString dev = QLatin1String(m_device.constData());
-    QList<QByteArray> devices = QAudioDeviceInfoInternal::availableDevices(QAudio::AudioOutput);
-    if(dev.compare(QLatin1String("default")) == 0) {
-#if(SND_LIB_MAJOR == 1 && SND_LIB_MINOR == 0 && SND_LIB_SUBMINOR >= 14)
-        dev = QLatin1String(devices.first().constData());
-#else
-        dev = QLatin1String("hw:0,0");
-#endif
-    } else {
-#if(SND_LIB_MAJOR == 1 && SND_LIB_MINOR == 0 && SND_LIB_SUBMINOR >= 14)
-        dev = QLatin1String(m_device);
-#else
-        int idx = 0;
-        char *name;
-
-        QString shortName = QLatin1String(m_device.mid(m_device.indexOf('=',0)+1).constData());
-
-	while(snd_card_get_name(idx,&name) == 0) {
-            if(qstrncmp(shortName.toLocal8Bit().constData(),name,shortName.length()) == 0)
-                break;
-            idx++;
-	}
-        dev = QString(QLatin1String("hw:%1,0")).arg(idx);
-#endif
-    }
-
-    // Step 1: try and open the device
-    while((count < 5) && (err < 0)) {
-        err=snd_pcm_open(&handle,dev.toLocal8Bit().constData(),SND_PCM_STREAM_PLAYBACK,0);
-        if(err < 0)
-            count++;
-    }
-    if (( err < 0)||(handle == 0)) {
-        errorState = QAudio::OpenError;
-        deviceState = QAudio::StoppedState;
-        return false;
-    }
-    snd_pcm_nonblock( handle, 0 );
-
-    // Step 2: Set the desired HW parameters.
-    snd_pcm_hw_params_alloca( &hwparams );
-
-    bool fatal = false;
-    QString errMessage;
-    unsigned int chunks = 8;
-
-    err = snd_pcm_hw_params_any( handle, hwparams );
-    if ( err < 0 ) {
-        fatal = true;
-        errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_any: err = %1").arg(err);
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_rate_resample( handle, hwparams, 1 );
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_rate_resample: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_access( handle, hwparams, access );
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_access: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = setFormat();
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_format: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_channels( handle, hwparams, (unsigned int)settings.channels() );
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_channels: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_rate_near( handle, hwparams, &freakuency, 0 );
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_rate_near: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        unsigned int maxBufferTime = 0;
-        unsigned int minBufferTime = 0;
-        unsigned int maxPeriodTime = 0;
-        unsigned int minPeriodTime = 0;
-
-        err = snd_pcm_hw_params_get_buffer_time_max(hwparams, &maxBufferTime, &dir);
-        if ( err >= 0)
-            err = snd_pcm_hw_params_get_buffer_time_min(hwparams, &minBufferTime, &dir);
-        if ( err >= 0)
-            err = snd_pcm_hw_params_get_period_time_max(hwparams, &maxPeriodTime, &dir);
-        if ( err >= 0)
-            err = snd_pcm_hw_params_get_period_time_min(hwparams, &minPeriodTime, &dir);
-
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: buffer/period min and max: err = %1").arg(err);
-        } else {
-            if (maxBufferTime < buffer_time || buffer_time < minBufferTime || maxPeriodTime < period_time || minPeriodTime > period_time) {
-#ifdef DEBUG_AUDIO
-                qDebug()<<"defaults out of range";
-                qDebug()<<"pmin="<<minPeriodTime<<", pmax="<<maxPeriodTime<<", bmin="<<minBufferTime<<", bmax="<<maxBufferTime;
-#endif
-                period_time = minPeriodTime;
-                if (period_time*4 <= maxBufferTime) {
-                    // Use 4 periods if possible
-                    buffer_time = period_time*4;
-                    chunks = 4;
-                } else if (period_time*2 <= maxBufferTime) {
-                    // Use 2 periods if possible
-                    buffer_time = period_time*2;
-                    chunks = 2;
-                } else {
-                    qWarning()<<"QAudioOutput: alsa only supports single period!";
-                    fatal = true;
-                }
-#ifdef DEBUG_AUDIO
-                qDebug()<<"used: buffer_time="<<buffer_time<<", period_time="<<period_time;
-#endif
-            }
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_buffer_time_near(handle, hwparams, &buffer_time, &dir);
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_buffer_time_near: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_period_time_near(handle, hwparams, &period_time, &dir);
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_period_time_near: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params_set_periods_near(handle, hwparams, &chunks, &dir);
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params_set_periods_near: err = %1").arg(err);
-        }
-    }
-    if ( !fatal ) {
-        err = snd_pcm_hw_params(handle, hwparams);
-        if ( err < 0 ) {
-            fatal = true;
-            errMessage = QString::fromLatin1("QAudioOutput: snd_pcm_hw_params: err = %1").arg(err);
-        }
-    }
-    if( err < 0) {
-        qWarning()<<errMessage;
-        errorState = QAudio::OpenError;
-        deviceState = QAudio::StoppedState;
-        return false;
-    }
-    snd_pcm_hw_params_get_buffer_size(hwparams,&buffer_frames);
-    buffer_size = snd_pcm_frames_to_bytes(handle,buffer_frames);
-    snd_pcm_hw_params_get_period_size(hwparams,&period_frames, &dir);
-    period_size = snd_pcm_frames_to_bytes(handle,period_frames);
-    snd_pcm_hw_params_get_buffer_time(hwparams,&buffer_time, &dir);
-    snd_pcm_hw_params_get_period_time(hwparams,&period_time, &dir);
-
-    // Step 3: Set the desired SW parameters.
-    snd_pcm_sw_params_t *swparams;
-    snd_pcm_sw_params_alloca(&swparams);
-    snd_pcm_sw_params_current(handle, swparams);
-    snd_pcm_sw_params_set_start_threshold(handle,swparams,period_frames);
-    snd_pcm_sw_params_set_stop_threshold(handle,swparams,buffer_frames);
-    snd_pcm_sw_params_set_avail_min(handle, swparams,period_frames);
-    snd_pcm_sw_params(handle, swparams);
-
-    // Step 4: Prepare audio
-    if(audioBuffer == 0)
-        audioBuffer = new char[snd_pcm_frames_to_bytes(handle,buffer_frames)];
-    snd_pcm_prepare( handle );
-    snd_pcm_start(handle);
-
-    // Step 5: Setup callback and timer fallback
-    snd_async_add_pcm_handler(&ahandler, handle, async_callback, this);
-    bytesAvailable = bytesFree();
-
-    // Step 6: Start audio processing
-    timer->start(period_time/1000);
-
-    clockStamp.restart();
-    timeStamp.restart();
-    elapsedTimeOffset = 0;
-    errorState  = QAudio::NoError;
-    totalTimeValue = 0;
-    opened = true;
-
-    return true;
-}
-
-void QAudioOutputPrivate::close()
-{
-    timer->stop();
-
-    if ( handle ) {
-        snd_pcm_drain( handle );
-        snd_pcm_close( handle );
-        handle = 0;
-        delete [] audioBuffer;
-        audioBuffer=0;
-    }
-    if(!pullMode && audioSource) {
-        delete audioSource;
-        audioSource = 0;
-    }
-    opened = false;
-}
-
-int QAudioOutputPrivate::bytesFree() const
-{
-    if(resuming)
-        return period_size;
-
-    if(deviceState != QAudio::ActiveState && deviceState != QAudio::IdleState)
-        return 0;
-    int frames = snd_pcm_avail_update(handle);
-    if((int)frames > (int)buffer_frames)
-        frames = buffer_frames;
-
-    return snd_pcm_frames_to_bytes(handle, frames);
-}
-
-qint64 QAudioOutputPrivate::write( const char *data, qint64 len )
-{
-    // Write out some audio data
-    if ( !handle )
-        return 0;
-#ifdef DEBUG_AUDIO
-    qDebug()<<"frames to write out = "<<
-        snd_pcm_bytes_to_frames( handle, (int)len )<<" ("<<len<<") bytes";
-#endif
-    int frames, err;
-    int space = bytesFree();
-    if(len < space) {
-        // Just write it
-        frames = snd_pcm_bytes_to_frames( handle, (int)len );
-        err = snd_pcm_writei( handle, data, frames );
-    } else {
-        // Only write space worth
-        frames = snd_pcm_bytes_to_frames( handle, (int)space );
-        err = snd_pcm_writei( handle, data, frames );
-    }
-    if(err > 0) {
-        totalTimeValue += err;
-        resuming = false;
-        errorState = QAudio::NoError;
-        if (deviceState != QAudio::ActiveState) {
-            deviceState = QAudio::ActiveState;
-            emit stateChanged(deviceState);
-        }
-        return snd_pcm_frames_to_bytes( handle, err );
-    } else
-        err = xrun_recovery(err);
-
-    if(err < 0) {
-        close();
-        errorState = QAudio::FatalError;
-        deviceState = QAudio::StoppedState;
-        emit stateChanged(deviceState);
-    }
-    return 0;
-}
-
-int QAudioOutputPrivate::periodSize() const
-{
-    return period_size;
-}
-
-void QAudioOutputPrivate::setBufferSize(int value)
-{
-    if(deviceState == QAudio::StoppedState)
-        buffer_size = value;
-}
-
-int QAudioOutputPrivate::bufferSize() const
-{
-    return buffer_size;
-}
-
-void QAudioOutputPrivate::setNotifyInterval(int ms)
-{
-    if(ms >= minimumIntervalTime)
-        intervalTime = ms;
-    else
-        intervalTime = minimumIntervalTime;
-}
-
-int QAudioOutputPrivate::notifyInterval() const
-{
-    return intervalTime;
-}
-
-qint64 QAudioOutputPrivate::processedUSecs() const
-{
-    return qint64(1000000) * totalTimeValue / settings.frequency();
-}
-
-void QAudioOutputPrivate::resume()
-{
-    if(deviceState == QAudio::SuspendedState) {
-        int err = 0;
-
-        if(handle) {
-            err = snd_pcm_prepare( handle );
-            if(err < 0)
-                xrun_recovery(err);
-
-            err = snd_pcm_start(handle);
-            if(err < 0)
-                xrun_recovery(err);
-
-            bytesAvailable = (int)snd_pcm_frames_to_bytes(handle, buffer_frames);
-        }
-        resuming = true;
-
-        deviceState = QAudio::ActiveState;
-
-        errorState = QAudio::NoError;
-        timer->start(period_time/1000);
-        emit stateChanged(deviceState);
-    }
-}
-
-QAudioFormat QAudioOutputPrivate::format() const
-{
-    return settings;
-}
-
-void QAudioOutputPrivate::suspend()
-{
-    if(deviceState == QAudio::ActiveState || deviceState == QAudio::IdleState || resuming) {
-        timer->stop();
-        deviceState = QAudio::SuspendedState;
-        errorState = QAudio::NoError;
-        emit stateChanged(deviceState);
-    }
-}
-
-void QAudioOutputPrivate::userFeed()
-{
-    if(deviceState == QAudio::StoppedState || deviceState == QAudio::SuspendedState)
-        return;
-#ifdef DEBUG_AUDIO
-    QTime now(QTime::currentTime());
-    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :userFeed() OUT";
-#endif
-    if(deviceState ==  QAudio::IdleState)
-        bytesAvailable = bytesFree();
-
-    deviceReady();
-}
-
-void QAudioOutputPrivate::feedback()
-{
-    updateAvailable();
-}
-
-
-void QAudioOutputPrivate::updateAvailable()
-{
-#ifdef DEBUG_AUDIO
-    QTime now(QTime::currentTime());
-    qDebug()<<now.second()<<"s "<<now.msec()<<"ms :updateAvailable()";
-#endif
-    bytesAvailable = bytesFree();
-}
-
-bool QAudioOutputPrivate::deviceReady()
-{
-    if(pullMode) {
-        int l = 0;
-        int chunks = bytesAvailable/period_size;
-        if(chunks==0) {
-            bytesAvailable = bytesFree();
-            return false;
-        }
-#ifdef DEBUG_AUDIO
-        qDebug()<<"deviceReady() avail="<<bytesAvailable<<" bytes, period size="<<period_size<<" bytes";
-        qDebug()<<"deviceReady() no. of chunks that can fit ="<<chunks<<", chunks in bytes ="<<period_size*chunks;
-#endif
-        int input = period_frames*chunks;
-        if(input > (int)buffer_frames)
-            input = buffer_frames;
-        l = audioSource->read(audioBuffer,snd_pcm_frames_to_bytes(handle, input));
-        if(l > 0) {
-            // Got some data to output
-            if(deviceState != QAudio::ActiveState)
-                return true;
-            qint64 bytesWritten = write(audioBuffer,l);
-            if (bytesWritten != l)
-                audioSource->seek(audioSource->pos()-(l-bytesWritten));
-            bytesAvailable = bytesFree();
-
-        } else if(l == 0) {
-            // Did not get any data to output
-            bytesAvailable = bytesFree();
-            if(bytesAvailable > snd_pcm_frames_to_bytes(handle, buffer_frames-period_frames)) {
-                // Underrun
-                if (deviceState != QAudio::IdleState) {
-                    errorState = QAudio::UnderrunError;
-                    deviceState = QAudio::IdleState;
-                    emit stateChanged(deviceState);
-                }
-            }
-
-        } else if(l < 0) {
-            close();
-            deviceState = QAudio::StoppedState;
-            errorState = QAudio::IOError;
-            emit stateChanged(deviceState);
-        }
-    } else {
-        bytesAvailable = bytesFree();
-        if(bytesAvailable > snd_pcm_frames_to_bytes(handle, buffer_frames-period_frames)) {
-            // Underrun
-            if (deviceState != QAudio::IdleState) {
-                errorState = QAudio::UnderrunError;
-                deviceState = QAudio::IdleState;
-                emit stateChanged(deviceState);
-            }
-        }
-    }
-
-    if(deviceState != QAudio::ActiveState)
-        return true;
-
-    if((timeStamp.elapsed() + elapsedTimeOffset) > intervalTime) {
-        emit notify();
-        elapsedTimeOffset = timeStamp.elapsed() + elapsedTimeOffset - intervalTime;
-        timeStamp.restart();
-    }
-    return true;
-}
-
-qint64 QAudioOutputPrivate::elapsedUSecs() const
-{
-    if (deviceState == QAudio::StoppedState)
-        return 0;
-
-    return clockStamp.elapsed()*1000;
-}
-
-void QAudioOutputPrivate::reset()
-{
-    if(handle)
-        snd_pcm_reset(handle);
-
-    stop();
-}
-
-OutputPrivate::OutputPrivate(QAudioOutputPrivate* audio)
-{
-    audioDevice = qobject_cast<QAudioOutputPrivate*>(audio);
-}
-
-OutputPrivate::~OutputPrivate() {}
-
-qint64 OutputPrivate::readData( char* data, qint64 len)
-{
-    Q_UNUSED(data)
-    Q_UNUSED(len)
-
-    return 0;
-}
-
-qint64 OutputPrivate::writeData(const char* data, qint64 len)
-{
-    int retry = 0;
-    qint64 written = 0;
-    if((audioDevice->deviceState == QAudio::ActiveState)
-            ||(audioDevice->deviceState == QAudio::IdleState)) {
-        while(written < len) {
-            int chunk = audioDevice->write(data+written,(len-written));
-            if(chunk <= 0)
-                retry++;
-            written+=chunk;
-            if(retry > 10)
-                return written;
-        }
-    }
-    return written;
-
-}
-
-QT_END_NAMESPACE