/*  This file is part of the KDE project.

Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).

This library is free software: you can redistribute it and/or modify

it under the terms of the GNU Lesser General Public License as published by

the Free Software Foundation, either version 2.1 or 3 of the License.

This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License

along with this library.  If not, see <http://www.gnu.org/licenses/>.

*/

#include "abstractplayer.h"

#include "defs.h"

#include "utils.h"

QT_BEGIN_NAMESPACE

using namespace Phonon;

using namespace Phonon::MMF;

/*! \class MMF::AbstractPlayer

  \internal

*/

//-----------------------------------------------------------------------------

// Constructor / destructor

//-----------------------------------------------------------------------------

MMF::AbstractPlayer::AbstractPlayer(const AbstractPlayer *player)

        :   m_videoOutput(0)

        ,   m_volume(InitialVolume)

        ,   m_state(GroundState)

        ,   m_error(NoError)

        ,   m_tickInterval(DefaultTickInterval)

        ,   m_transitionTime(0)

        ,   m_prefinishMark(0)

{

    if(player) {

        m_videoOutput = player->m_videoOutput;

        m_volume = player->m_volume;

        m_tickInterval = player->m_tickInterval;

        m_transitionTime = player->m_transitionTime;

        m_prefinishMark = player->m_prefinishMark;

        // This is to prevent unwanted state transitions occurring as a result

        // of MediaObject::switchToNextSource() during playlist playback.

        if (StoppedState == player->m_state)

            m_state = player->m_state;

    }

}

//-----------------------------------------------------------------------------

// MediaObjectInterface

//-----------------------------------------------------------------------------

qint32 MMF::AbstractPlayer::tickInterval() const

{

    return m_tickInterval;

}

void MMF::AbstractPlayer::setTickInterval(qint32 interval)

{

    m_tickInterval = interval;

    doSetTickInterval(interval);

}

qint32 MMF::AbstractPlayer::prefinishMark() const

{

    return m_prefinishMark;

}

void MMF::AbstractPlayer::setPrefinishMark(qint32 mark)

{

    m_prefinishMark = mark;

}

qint32 MMF::AbstractPlayer::transitionTime() const

{

    return m_transitionTime;

}

void MMF::AbstractPlayer::setTransitionTime(qint32 time)

{

    m_transitionTime = time;

}

void MMF::AbstractPlayer::volumeChanged(qreal volume)

{

    m_volume = volume;

}

//-----------------------------------------------------------------------------

// Video output

//-----------------------------------------------------------------------------

void MMF::AbstractPlayer::setVideoOutput(AbstractVideoOutput* videoOutput)

{

    m_videoOutput = videoOutput;

    videoOutputChanged();

}

void MMF::AbstractPlayer::videoOutputChanged()

{

    // Default behaviour is empty - overridden by VideoPlayer

}

void MMF::AbstractPlayer::setError(const QString &errorMessage)

{

    TRACE_CONTEXT(AbstractPlayer::setError, EAudioInternal);

    TRACE_ENTRY("state %d", m_state);

    m_error = Phonon::NormalError;

    m_errorString = errorMessage;

    changeState(ErrorState);

    TRACE_EXIT_0();

}

void MMF::AbstractPlayer::setError(const QString &errorMessage, int symbianError)

{

    setError(errorMessage + ": " + Utils::symbianErrorToString(symbianError));

}

Phonon::ErrorType MMF::AbstractPlayer::errorType() const

{

    const Phonon::ErrorType result = (ErrorState == m_state)

                                     ? m_error : NoError;

    return result;

}

QString MMF::AbstractPlayer::errorString() const

{

    return m_errorString;

}

Phonon::State MMF::AbstractPlayer::phononState() const

{

    return phononState(m_state);

}

Phonon::State MMF::AbstractPlayer::phononState(PrivateState state) const

{

    const Phonon::State phononState =

        GroundState == state

        ?    Phonon::LoadingState

        :    static_cast<Phonon::State>(state);

    return phononState;

}

AbstractPlayer::PrivateState AbstractPlayer::privateState() const

{

    return m_state;

}

Phonon::State MMF::AbstractPlayer::state() const

{

    return phononState(m_state);

}

void MMF::AbstractPlayer::setState(PrivateState newState)

{

    m_state = newState;

}

void MMF::AbstractPlayer::changeState(PrivateState newState)

{

    TRACE_CONTEXT(AbstractPlayer::changeState, EAudioInternal);

    TRACE_ENTRY("state %d newState %d", privateState(), newState);

    // TODO: add some invariants to check that the transition is valid

    const Phonon::State oldPhononState = phononState(privateState());

    // We need to change the state before we emit stateChanged(), because

    // some user code, for instance the mediaplayer, switch on MediaObject's

    // state.

    setState(newState);

    const Phonon::State newPhononState = phononState(newState);

    if (oldPhononState != newPhononState) {

        TRACE("emit stateChanged(%d, %d)", newPhononState, oldPhononState);

        emit stateChanged(newPhononState, oldPhononState);

    }

    TRACE_EXIT_0();

}

QT_END_NAMESPACE