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#include "qplatformmediaencoder_p.h"
#include <QObject>

QT_BEGIN_NAMESPACE


/*!
    \class QPlatformMediaEncoder
    \internal
    \inmodule QtMultimedia


    \ingroup multimedia_control

    \brief The QPlatformMediaEncoder class provides access to the recording
    functionality.

    This control provides a means to set the \l {outputLocation()}{output location},
    and record(), pause(), resume(), and stop() recording.  It also
    provides feedback on the \l {duration()}{duration} of the recording.

    \sa QMediaRecorder

*/

/*!
    Constructs a media recorder control with the given \a parent.
*/

QPlatformMediaEncoder::QPlatformMediaEncoder(QMediaRecorder *parent)
    : q(parent)
{
}

/*!
    \fn QUrl QPlatformMediaEncoder::outputLocation() const

    Returns the current output location being used.
*/

/*!
    \fn bool QPlatformMediaEncoder::setOutputLocation(const QUrl &location)

    Sets the output \a location and returns if this operation is successful.
    If file at the output location already exists, it should be overwritten.

    The \a location can be relative or empty;
    in this case the service should use the system specific place and file naming scheme.

    After recording has started, the backend should report the actual file location
    with actualLocationChanged() signal.
*/

/*!
    \fn QMediaRecorder::RecorderState QPlatformMediaEncoder::state() const

    Return the current recording state.
*/

/*!
    \fn qint64 QPlatformMediaEncoder::duration() const

    Return the current duration in milliseconds.
*/

/*!
    \fn void QPlatformMediaEncoder::record(QMediaEncoderSettings &settings)

    Start media recording in accordance with \a{settings}.
*/

/*!
    \fn void QPlatformMediaEncoder::pause()

    Pause media recording. Not all platforms supports this operation
*/
void QPlatformMediaEncoder::pause() {
    error(QMediaRecorder::FormatError, QMediaRecorder::tr("Pause not supported"));
}

/*!
    \fn void QPlatformMediaEncoder::resume()

    Resume media recording. Not all platforms supports this operation
*/
void QPlatformMediaEncoder::resume() {
    error(QMediaRecorder::FormatError, QMediaRecorder::tr("Resume not supported"));
}

/*!
    \fn void QPlatformMediaEncoder::stop()

    Stop media recording
*/

/*!
    \fn void QPlatformMediaEncoder::stateChanged(QMediaRecorder::RecorderState state)

    Signals that the \a state of a media recorder has changed.
*/
void QPlatformMediaEncoder::stateChanged(QMediaRecorder::RecorderState state)
{
    if (m_state == state)
        return;
    m_state = state;
    emit q->recorderStateChanged(state);
}

/*!
    \fn void QPlatformMediaEncoder::durationChanged(qint64 duration)

    Signals that the \a duration of the recorded media has changed.

    This only emitted when there is a discontinuous change in the duration such as being reset to 0.
*/
void QPlatformMediaEncoder::durationChanged(qint64 duration)
{
    emit q->durationChanged(duration);
}

/*!
    \fn void QPlatformMediaEncoder::actualLocationChanged(const QUrl &location)

    Signals that the actual media \a location has changed.
    This signal should be emitted at start of recording.
*/
void QPlatformMediaEncoder::actualLocationChanged(const QUrl &location)
{
    if (m_actualLocation == location)
        return;
    m_actualLocation = location;
    emit q->actualLocationChanged(location);
}

/*!
    \fn void QPlatformMediaEncoder::error(QMediaRecorder::Error error, const QString &errorString)

    Signals that an \a error has occurred.  The \a errorString describes the error.
*/
void QPlatformMediaEncoder::error(QMediaRecorder::Error error, const QString &errorString)
{
    if (error == m_error && errorString == m_errorString)
        return;
    m_error = error;
    m_errorString = errorString;
    if (error != QMediaRecorder::NoError)
        emit q->errorOccurred(error, errorString);
    emit q->errorChanged();
}

void QPlatformMediaEncoder::metaDataChanged()
{
    emit q->metaDataChanged();
}

QT_END_NAMESPACE