/*

* Copyright (c) 2010 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:  Engine class of the SimpleVideoPlayback MPX view plugin.

*

*/

#include <mpxplaybackutility.h> // MMPXPlaybackUtility

#include <mpxmessagegeneraldefs.h>

#include <mpxplaybackmessage.h>

#include <mpxcommandgeneraldefs.h>

#include <mpxvideoplaybackdefs.h>

#include <mpxmediageneraldefs.h>

#include <mpxmediageneralextdefs.h>

#include <mpxmediavideodefs.h>

#include "svpbengine.h"

#include "trace.h"

const TUid KVideoHelixPlaybackPluginUid = { 0x10282551 };

SvpbEngine::SvpbEngine(QObject *parent) :

    QObject(parent),

    mSurfaceContainer(0),

    mState(Disconnected),

    mPlaybackUtility(0),

    mMpxPbState(EPbStateNotInitialised)

{

    FUNC_LOG;

}

SvpbEngine::~SvpbEngine()

{

    FUNC_LOG;

    disconnectMPX();

}

void SvpbEngine::connectMPX()

{

    FUNC_LOG;

    if (mState == Disconnected && !mPlaybackUtility) {

        QT_TRAP_THROWING(mPlaybackUtility =

            MMPXPlaybackUtility::UtilityL(EMPXCategoryVideo, KPbModeDefault));

        MMPXPlayerManager &manager = mPlaybackUtility->PlayerManager();

        QT_TRAP_THROWING(manager.SelectPlayerL(KVideoHelixPlaybackPluginUid));

        QT_TRAP_THROWING(mPlaybackUtility->AddObserverL(*this));

        mState = Connected;

        INFO("Connected");

    }

}

void SvpbEngine::disconnectMPX()

{

    FUNC_LOG;

    if (mState != Disconnected && mPlaybackUtility)

    {

        mPlaybackUtility->RemoveObserverL(*this);

        mPlaybackUtility->Close();

        mPlaybackUtility = 0;

        mState = Disconnected;

        INFO("Disconnected");

    }

}

/** Ownership is not transferred. */

void SvpbEngine::setSurfaceContainer(SvpbSurfaceContainer *surfaceContainer)

{

    FUNC_LOG;

    mSurfaceContainer = surfaceContainer;

}

void SvpbEngine::togglePause()

{

    FUNC_LOG;

    if (mState == PlayRequested || mState == Playing) {

        QT_TRAP_THROWING(mPlaybackUtility->CommandL(EPbCmdPause, 0));

        mState = PauseRequested;

        INFO("Pause requested");

    }

    else if (mState == PauseRequested || mState == Paused) {

        QT_TRAP_THROWING(mPlaybackUtility->CommandL(EPbCmdPlay, 0));

        mState = PlayRequested;

        INFO("Play requested");

    }

}

void SvpbEngine::stop()

{

    FUNC_LOG;

    if (mState == PlayRequested || mState == Playing) {

        QT_TRAP_THROWING(mPlaybackUtility->CommandL(EPbCmdStop, 0));

        mState = StopRequested;

        INFO("Stop requested");

    }

}

void SvpbEngine::HandlePlaybackMessage(CMPXMessage *aMessage, TInt aErr)

{

    FUNC_LOG;

    if (aMessage) {

        TMPXMessageId id(aMessage->ValueTObjectL<TMPXMessageId>(KMPXMessageGeneralId));

        if (id == KMPXMessageGeneral) {

            TInt msg(0), type(0);

            QT_TRAP_THROWING(msg = aMessage->ValueTObjectL<TInt>(KMPXMessageGeneralEvent));

            QT_TRAP_THROWING(type = aMessage->ValueTObjectL<TInt>(KMPXMessageGeneralType));

            INFO("KMPXMessageGeneral" << msg << type);

            switch(msg)

            {

            case TMPXPlaybackMessage::EInitializeComplete:

                INFO("Initialize complete");

                break;

            case TMPXPlaybackMessage::EStateChanged:

                mpxPbStateChanged(static_cast<TMPXPlaybackState>(type), aErr);

                break;

            default:

                break;

            }

        }

        else if (id == KMPXMediaIdVideoDisplayMessage) {

            TMPXVideoDisplayCommand msg =

                ( *(aMessage->Value<TMPXVideoDisplayCommand>(KMPXMediaVideoDisplayCommand)));

            INFO("KMPXMediaIdVideoDisplayMessage" << msg);

            switch (msg)

            {

            case EPbMsgVideoSurfaceCreated:

            case EPbMsgVideoSurfaceChanged:

                if (mSurfaceContainer) {

                    TSurfaceId surfaceId;

                    TRect cropRect;

                    TVideoAspectRatio aspectRatio;

                    QT_TRAP_THROWING(surfaceId = aMessage->ValueTObjectL<TSurfaceId>(KMPXMediaVideoDisplayTSurfaceId));

                    QT_TRAP_THROWING(cropRect = aMessage->ValueTObjectL<TRect>(KMPXMediaVideoDisplayCropRect));

                    QT_TRAP_THROWING(aspectRatio = aMessage->ValueTObjectL<TVideoAspectRatio>(KMPXMediaVideoDisplayAspectRatio));

                    mSurfaceContainer->attachSurface(surfaceId, cropRect, aspectRatio);

                }

                break;

            case EPbMsgVideoSurfaceRemoved:

                if (mSurfaceContainer) {

                    mSurfaceContainer->detachSurface();

                }

                break;

            }

        }

    }

}

void SvpbEngine::HandlePropertyL(TMPXPlaybackProperty aProperty, TInt aValue, TInt aError)

{

    Q_UNUSED(aProperty);

    Q_UNUSED(aValue);

    Q_UNUSED(aError);

    FUNC_LOG;

}

void SvpbEngine::HandleSubPlayerNamesL(TUid /*aPlayer*/,

                                                 const MDesCArray* /*aSubPlayers*/,

                                                 TBool /*aComplete*/,

                                                 TInt /*aError*/)

{

    FUNC_LOG;

}

void SvpbEngine::HandleMediaL(const CMPXMedia& /*aProperties*/, TInt /*aError*/)

{

    FUNC_LOG;

    QT_TRAP_THROWING(mPlaybackUtility->CommandL(EPbCmdPlay, 0));

    mState = PlayRequested;

    INFO("Play requested");

}

void SvpbEngine::mpxPbStateChanged(TMPXPlaybackState type, int err)

{

    FUNC_LOG;

    INFO("MPX PB state:" << type << "error" << err);

    if (err == 0) {

        switch(type) {

            case EPbStateInitialised:

                requestMedia(); // VideoHelixPlugin uses media request to signal view activation

                mState = MediaRequested;

                INFO("Media requested");

                break;

            case EPbStatePlaying:

                mState = Playing;

                INFO("Playing");

                break;

            case EPbStatePaused:

                mState = Paused;

                INFO("Paused");

                break;

            case EPbStateStopped:

                mState = Connected;

                INFO("Connected");

                emit finished();

                break;

            default:

                break;

        };

    }

}

void SvpbEngine::requestMedia()

{

    FUNC_LOG;

    MMPXSource *source = mPlaybackUtility->Source();

    HANDLE_ERROR_NULL(source);

    if (source) {

        RArray<TMPXAttribute> attrs;

        attrs.Append(KMPXMediaGeneralUri|

                     KMPXMediaGeneralDuration|

                     KMPXMediaGeneralTitle|

                     KMPXMediaGeneralMimeType);

        attrs.Append(KMPXMediaVideoAll);

        CMPXAttributeSpecs *specs = 0;

        TRAPD(err, specs = CMPXAttributeSpecs::NewL());

        HANDLE_ERROR_NEG(err);

        if (specs) {

            // Set the attribute to always route the media call to playback plugin

            TRAP(err, specs->SetTObjectValueL<TBool>(KMPXMediaGeneralExtMediaRedirect, ETrue));

            HANDLE_ERROR_NEG(err);

            if (err == KErrNone) {

                TRAP(err, source->MediaL(attrs.Array(), *this, specs));

                HANDLE_ERROR_NEG(err);

            }

        }

        delete specs;

        attrs.Close();

    }

}