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****************************************************************************/

#include <QtCore/QCoreApplication>

#include "qaudiodeviceinfo_symbian_p.h"

#include "qaudio_symbian_p.h"

QT_BEGIN_NAMESPACE

QAudioDeviceInfoInternal::QAudioDeviceInfoInternal(QByteArray device,

                                               QAudio::Mode mode)

    :   m_deviceName(QLatin1String(device))

    ,   m_mode(mode)

    ,   m_updated(false)

{

}

QAudioDeviceInfoInternal::~QAudioDeviceInfoInternal()

{

}

QAudioFormat QAudioDeviceInfoInternal::preferredFormat() const

{

    QAudioFormat format;

    switch (m_mode) {

    case QAudio::AudioOutput:

        format.setFrequency(44100);

        format.setChannels(2);

        format.setSampleSize(16);

        format.setByteOrder(QAudioFormat::LittleEndian);

        format.setSampleType(QAudioFormat::SignedInt);

        format.setCodec(QLatin1String("audio/pcm"));

        break;

    case QAudio::AudioInput:

        format.setFrequency(8000);

        format.setChannels(1);

        format.setSampleSize(16);

        format.setByteOrder(QAudioFormat::LittleEndian);

        format.setSampleType(QAudioFormat::SignedInt);

        format.setCodec(QLatin1String("audio/pcm"));

        break;

    default:

        Q_ASSERT_X(false, Q_FUNC_INFO, "Invalid mode");

    }

    if (!isFormatSupported(format)) {

        format = QAudioFormat();

        format.setCodec(QLatin1String("audio/pcm"));

        if (m_capabilities.contains(format.codec())) {

            const Capabilities &codecCaps = m_capabilities[format.codec()];

            if (codecCaps.m_frequencies.size())

                format.setFrequency(codecCaps.m_frequencies[0]);

            if (codecCaps.m_channels.size())

                format.setChannels(codecCaps.m_channels[0]);

            if (codecCaps.m_sampleSizes.size())

                format.setSampleSize(codecCaps.m_sampleSizes[0]);

            if (codecCaps.m_byteOrders.size())

                format.setByteOrder(codecCaps.m_byteOrders[0]);

            if (codecCaps.m_sampleTypes.size())

                format.setSampleType(codecCaps.m_sampleTypes[0]);

        }

    }

    return format;

}

bool QAudioDeviceInfoInternal::isFormatSupported(

                                 const QAudioFormat &format) const

{

    getSupportedFormats();

    bool supported = false;

    if (m_capabilities.contains(format.codec())) {

        const Capabilities &codecCaps = m_capabilities[format.codec()];

        supported = codecCaps.m_frequencies.contains(format.frequency())

                &&  codecCaps.m_channels.contains(format.channels())

                &&  codecCaps.m_sampleSizes.contains(format.sampleSize())

                &&  codecCaps.m_byteOrders.contains(format.byteOrder())

                &&  codecCaps.m_sampleTypes.contains(format.sampleType());

    }

    return supported;

}

QAudioFormat QAudioDeviceInfoInternal::nearestFormat(const QAudioFormat &format) const

{

    if (isFormatSupported(format))

        return format;

    else

        return preferredFormat();

}

QString QAudioDeviceInfoInternal::deviceName() const

{

    return m_deviceName;

}

QStringList QAudioDeviceInfoInternal::codecList()

{

    getSupportedFormats();

    return m_capabilities.keys();

}

QList<int> QAudioDeviceInfoInternal::frequencyList()

{

    getSupportedFormats();

    return m_unionCapabilities.m_frequencies;

}

QList<int> QAudioDeviceInfoInternal::channelsList()

{

    getSupportedFormats();

    return m_unionCapabilities.m_channels;

}

QList<int> QAudioDeviceInfoInternal::sampleSizeList()

{

    getSupportedFormats();

    return m_unionCapabilities.m_sampleSizes;

}

QList<QAudioFormat::Endian> QAudioDeviceInfoInternal::byteOrderList()

{

    getSupportedFormats();

    return m_unionCapabilities.m_byteOrders;

}

QList<QAudioFormat::SampleType> QAudioDeviceInfoInternal::sampleTypeList()

{

    getSupportedFormats();

    return m_unionCapabilities.m_sampleTypes;

}

QByteArray QAudioDeviceInfoInternal::defaultInputDevice()

{

    return QByteArray("default");

}

QByteArray QAudioDeviceInfoInternal::defaultOutputDevice()

{

    return QByteArray("default");

}

QList<QByteArray> QAudioDeviceInfoInternal::availableDevices(QAudio::Mode)

{

    QList<QByteArray> result;

    result += QByteArray("default");

    return result;

}

void QAudioDeviceInfoInternal::devsoundInitializeComplete(int err)

{

    m_intializationResult = err;

    m_initializing = false;

}

// Helper function

template<typename T>

void appendUnique(QList<T> &left, const QList<T> &right)

{

    foreach (const T &value, right)

        if (!left.contains(value))

            left += value;

}

void QAudioDeviceInfoInternal::getSupportedFormats() const

{

    if (!m_updated) {

        QScopedPointer<SymbianAudio::DevSoundWrapper> devsound(new SymbianAudio::DevSoundWrapper(m_mode));

        connect(devsound.data(), SIGNAL(initializeComplete(int)),

                this, SLOT(devsoundInitializeComplete(int)));

        foreach (const QString& codec, devsound->supportedCodecs()) {

            m_initializing = true;

            devsound->initialize(codec);

            while (m_initializing)

                QCoreApplication::instance()->processEvents(QEventLoop::WaitForMoreEvents);

            if (KErrNone == m_intializationResult) {

                m_capabilities[codec].m_frequencies = devsound->supportedFrequencies();

                appendUnique(m_unionCapabilities.m_frequencies, devsound->supportedFrequencies());

                m_capabilities[codec].m_channels = devsound->supportedChannels();

                appendUnique(m_unionCapabilities.m_channels, devsound->supportedChannels());

                m_capabilities[codec].m_sampleSizes = devsound->supportedSampleSizes();

                appendUnique(m_unionCapabilities.m_sampleSizes, devsound->supportedSampleSizes());

                m_capabilities[codec].m_byteOrders = devsound->supportedByteOrders();

                appendUnique(m_unionCapabilities.m_byteOrders, devsound->supportedByteOrders());

                m_capabilities[codec].m_sampleTypes = devsound->supportedSampleTypes();

                appendUnique(m_unionCapabilities.m_sampleTypes, devsound->supportedSampleTypes());

            }

        }

        m_updated = true;

    }

}

QT_END_NAMESPACE