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#include "qmediarecorder.h"

#include <qmediarecordercontrol.h>

#include <qmediaobject_p.h>

#include <qmediaservice.h>

#include <qmediaserviceprovider.h>

#include <qmetadatawritercontrol.h>

#include <qaudioencodercontrol.h>

#include <qvideoencodercontrol.h>

#include <qmediacontainercontrol.h>

#include <QtCore/qdebug.h>

#include <QtCore/qurl.h>

#include <QtCore/qstringlist.h>

#include <QtCore/qmetaobject.h>

#include <qaudioformat.h>

QT_BEGIN_NAMESPACE

/*!

    \class QMediaRecorder

    \ingroup multimedia

    \preliminary

    \brief The QMediaRecorder class is used for the recording of media content.

    The QMediaRecorder class is a high level media recording class.  It's not

    intended to be used alone but for accessing the media recording functions

    of other media objects, like QRadioTuner, or QAudioCaptureSource.

    \code

    // Audio only recording

    audioSource = new QAudioCaptureSource;

    recorder = new QMediaRecorder(audioSource);

    QAudioEncoderSettings audioSettings;

    audioSettings.setCodec("audio/vorbis");

    audioSettings.setQuality(QtMultimediaKit::HighQuality);

    recorder->setEncodingSettings(audioSettings);

    recorder->setOutputLocation(QUrl::fromLocalFile(fileName));

    recorder->record();

    \endcode

    \sa

*/

namespace

{

class MediaRecorderRegisterMetaTypes

{

public:

    MediaRecorderRegisterMetaTypes()

    {

        qRegisterMetaType<QMediaRecorder::State>("QMediaRecorder::State");

        qRegisterMetaType<QMediaRecorder::Error>("QMediaRecorder::Error");

    }

} _registerRecorderMetaTypes;

}

class QMediaRecorderPrivate

{

    Q_DECLARE_NON_CONST_PUBLIC(QMediaRecorder)

public:

    QMediaRecorderPrivate();

    QMediaObject *mediaObject;

    QMediaRecorderControl *control;

    QMediaContainerControl *formatControl;

    QAudioEncoderControl *audioControl;

    QVideoEncoderControl *videoControl;

    QMetaDataWriterControl *metaDataControl;

    QTimer* notifyTimer;

    QMediaRecorder::State state;

    QMediaRecorder::Error error;

    QString errorString;

    void _q_stateChanged(QMediaRecorder::State state);

    void _q_error(int error, const QString &errorString);

    void _q_serviceDestroyed();

    void _q_notify();

    void _q_updateNotifyInterval(int ms);

    QMediaRecorder *q_ptr;

};

QMediaRecorderPrivate::QMediaRecorderPrivate():

     mediaObject(0),

     control(0),

     formatControl(0),

     audioControl(0),

     videoControl(0),

     metaDataControl(0),

     notifyTimer(0),

     state(QMediaRecorder::StoppedState),

     error(QMediaRecorder::NoError)

{

}

#define ENUM_NAME(c,e,v) (c::staticMetaObject.enumerator(c::staticMetaObject.indexOfEnumerator(e)).valueToKey((v)))

void QMediaRecorderPrivate::_q_stateChanged(QMediaRecorder::State ps)

{

    Q_Q(QMediaRecorder);

    if (ps == QMediaRecorder::RecordingState)

        notifyTimer->start();

    else

        notifyTimer->stop();

//    qDebug() << "Recorder state changed:" << ENUM_NAME(QMediaRecorder,"State",ps);

    if (state != ps) {

        emit q->stateChanged(ps);

    }

    state = ps;

}

void QMediaRecorderPrivate::_q_error(int error, const QString &errorString)

{

    Q_Q(QMediaRecorder);

    this->error = QMediaRecorder::Error(error);

    this->errorString = errorString;

    emit q->error(this->error);

}

void QMediaRecorderPrivate::_q_serviceDestroyed()

{

    q_func()->setMediaObject(0);

}

void QMediaRecorderPrivate::_q_notify()

{

    emit q_func()->durationChanged(q_func()->duration());

}

void QMediaRecorderPrivate::_q_updateNotifyInterval(int ms)

{

    notifyTimer->setInterval(ms);

}

/*!

    Constructs a media recorder which records the media produced by \a mediaObject.

    The \a parent is passed to QMediaObject.

*/

QMediaRecorder::QMediaRecorder(QMediaObject *mediaObject, QObject *parent):

    QObject(parent),

    d_ptr(new QMediaRecorderPrivate)

{

    Q_D(QMediaRecorder);

    d->q_ptr = this;

    setMediaObject(mediaObject);

    d->notifyTimer = new QTimer(this);

    d->notifyTimer->setInterval(mediaObject->notifyInterval());

    connect(d->notifyTimer, SIGNAL(timeout()), SLOT(_q_notify()));

    connect(mediaObject, SIGNAL(notifyIntervalChanged(int)), SLOT(_q_updateNotifyInterval(int)));

}

/*!

    Destroys a media recorder object.

*/

QMediaRecorder::~QMediaRecorder()

{

}

/*!

    Returns the QMediaObject instance that this QMediaRecorder is bound too,

    or 0 otherwise.

*/

QMediaObject *QMediaRecorder::mediaObject() const

{

    return d_func()->mediaObject;

}

/*!

    \internal

*/

bool QMediaRecorder::setMediaObject(QMediaObject *object)

{

    Q_D(QMediaRecorder);

    if (object == d->mediaObject)

        return true;

    if (d->mediaObject) {

        if (d->control) {

            disconnect(d->control, SIGNAL(stateChanged(QMediaRecorder::State)),

                       this, SLOT(_q_stateChanged(QMediaRecorder::State)));

            disconnect(d->control, SIGNAL(mutedChanged(bool)),

                       this, SIGNAL(mutedChanged(bool)));

            disconnect(d->control, SIGNAL(durationChanged(qint64)),

                       this, SIGNAL(durationChanged(qint64)));

            disconnect(d->control, SIGNAL(error(int,QString)),

                       this, SLOT(_q_error(int,QString)));

        }

        QMediaService *service = d->mediaObject->service();

        if (service) {

            disconnect(service, SIGNAL(destroyed()), this, SLOT(_q_serviceDestroyed()));

            if (d->control)

                service->releaseControl(d->control);

            if (d->formatControl)

                service->releaseControl(d->formatControl);

            if (d->audioControl)

                service->releaseControl(d->audioControl);

            if (d->videoControl)

                service->releaseControl(d->videoControl);

            if (d->metaDataControl) {

                disconnect(d->metaDataControl, SIGNAL(metaDataChanged()),

                        this, SIGNAL(metaDataChanged()));

                disconnect(d->metaDataControl, SIGNAL(metaDataAvailableChanged(bool)),

                        this, SIGNAL(metaDataAvailableChanged(bool)));

                disconnect(d->metaDataControl, SIGNAL(writableChanged(bool)),

                        this, SIGNAL(metaDataWritableChanged(bool)));

                service->releaseControl(d->metaDataControl);

            }

        }

    }

    d->control = 0;

    d->formatControl = 0;

    d->audioControl = 0;

    d->videoControl = 0;

    d->metaDataControl = 0;

    d->mediaObject = object;

    if (d->mediaObject) {

        QMediaService *service = d->mediaObject->service();

        if (service) {

            d->control = qobject_cast<QMediaRecorderControl*>(service->requestControl(QMediaRecorderControl_iid));

            if (d->control) {

                d->formatControl = qobject_cast<QMediaContainerControl *>(service->requestControl(QMediaContainerControl_iid));

                d->audioControl = qobject_cast<QAudioEncoderControl *>(service->requestControl(QAudioEncoderControl_iid));

                d->videoControl = qobject_cast<QVideoEncoderControl *>(service->requestControl(QVideoEncoderControl_iid));

                QMediaControl *control = service->requestControl(QMetaDataWriterControl_iid);

                if (control) {

                    d->metaDataControl = qobject_cast<QMetaDataWriterControl *>(control);

                    if (!d->metaDataControl) {

                        service->releaseControl(control);

                    } else {

                        connect(d->metaDataControl,

                                SIGNAL(metaDataChanged()),

                                SIGNAL(metaDataChanged()));

                        connect(d->metaDataControl,

                                SIGNAL(metaDataAvailableChanged(bool)),

                                SIGNAL(metaDataAvailableChanged(bool)));

                        connect(d->metaDataControl,

                                SIGNAL(writableChanged(bool)),

                                SIGNAL(metaDataWritableChanged(bool)));

                    }

                }

                connect(d->control, SIGNAL(stateChanged(QMediaRecorder::State)),

                        this, SLOT(_q_stateChanged(QMediaRecorder::State)));

                connect(d->control, SIGNAL(mutedChanged(bool)),

                        this, SIGNAL(mutedChanged(bool)));

                connect(d->control, SIGNAL(durationChanged(qint64)),

                        this, SIGNAL(durationChanged(qint64)));

                connect(d->control, SIGNAL(error(int,QString)),

                        this, SLOT(_q_error(int,QString)));

                connect(service, SIGNAL(destroyed()), this, SLOT(_q_serviceDestroyed()));

                return true;

            }

        }

        d->mediaObject = 0;

        return false;

    }

    return true;

}

/*!

    \property QMediaRecorder::outputLocation

    \brief the destination location of media content.

    Setting the location can fail, for example when the service supports only

    local file system locations but a network URL was passed. If the service

    does not support media recording this setting the output location will

    always fail.

    The \a location can be relative or empty;

    in this case the recorder uses the system specific place and file naming scheme.

    After recording has stated, QMediaRecorder::outputLocation() returns the actual output location.

*/

/*!

    Returns true if media recorder service ready to use.

*/

bool QMediaRecorder::isAvailable() const

{

    if (d_func()->control != NULL)

        return true;

    else

        return false;

}

/*!

    Returns the availability error code.

*/

QtMultimediaKit::AvailabilityError QMediaRecorder::availabilityError() const

{

    if (d_func()->control != NULL)

        return QtMultimediaKit::NoError;

    else

        return QtMultimediaKit::ServiceMissingError;

}

QUrl QMediaRecorder::outputLocation() const

{

    return d_func()->control ? d_func()->control->outputLocation() : QUrl();

}

bool QMediaRecorder::setOutputLocation(const QUrl &location)

{

    Q_D(QMediaRecorder);

    return d->control ? d->control->setOutputLocation(location) : false;

}

/*!

    Returns the current media recorder state.

    \sa QMediaRecorder::State

*/

QMediaRecorder::State QMediaRecorder::state() const

{

    return d_func()->control ? QMediaRecorder::State(d_func()->control->state()) : StoppedState;

}

/*!

    Returns the current error state.

    \sa errorString()

*/

QMediaRecorder::Error QMediaRecorder::error() const

{

    return d_func()->error;

}

/*!

    Returns a string describing the current error state.

    \sa error()

*/

QString QMediaRecorder::errorString() const

{

    return d_func()->errorString;

}

/*!

    \property QMediaRecorder::duration

    \brief the recorded media duration in milliseconds.

*/

qint64 QMediaRecorder::duration() const

{

    return d_func()->control ? d_func()->control->duration() : 0;

}

/*!

    \property QMediaRecorder::muted

    \brief whether a recording audio stream is muted.

*/

bool QMediaRecorder::isMuted() const

{

    return d_func()->control ? d_func()->control->isMuted() : 0;

}

void QMediaRecorder::setMuted(bool muted)

{

    Q_D(QMediaRecorder);

    if (d->control)

        d->control->setMuted(muted);

}

/*!

    Returns a list of MIME types of supported container formats.

*/

QStringList QMediaRecorder::supportedContainers() const

{

    return d_func()->formatControl ?

           d_func()->formatControl->supportedContainers() : QStringList();

}

/*!

    Returns a description of a container format \a mimeType.

*/

QString QMediaRecorder::containerDescription(const QString &mimeType) const

{

    return d_func()->formatControl ?

           d_func()->formatControl->containerDescription(mimeType) : QString();

}

/*!

    Returns the MIME type of the selected container format.

*/

QString QMediaRecorder::containerMimeType() const

{

    return d_func()->formatControl ?

           d_func()->formatControl->containerMimeType() : QString();

}

/*!

    Returns a list of supported audio codecs.

*/

QStringList QMediaRecorder::supportedAudioCodecs() const

{

    return d_func()->audioControl ?

           d_func()->audioControl->supportedAudioCodecs() : QStringList();

}

/*!

    Returns a description of an audio \a codec.

*/

QString QMediaRecorder::audioCodecDescription(const QString &codec) const

{

    return d_func()->audioControl ?

           d_func()->audioControl->codecDescription(codec) : QString();

}

/*!

    Returns a list of supported audio sample rates.

    If non null audio \a settings parameter is passed, the returned list is

    reduced to sample rates supported with partial settings applied.

    This can be used to query the list of sample rates, supported by specific

    audio codec.

    If the encoder supports arbitrary sample rates within the supported rates

    range, *\a continuous is set to true, otherwise *\a continuous is set to

    false.

*/

QList<int> QMediaRecorder::supportedAudioSampleRates(const QAudioEncoderSettings &settings, bool *continuous) const

{

    if (continuous)

        *continuous = false;

    return d_func()->audioControl ?

           d_func()->audioControl->supportedSampleRates(settings, continuous) : QList<int>();

}

/*!

    Returns a list of resolutions video can be encoded at.

    If non null video \a settings parameter is passed, the returned list is