/*

* Copyright (c) 2002-2007 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:  This class is used for playing video.

*

*/

//  INCLUDE FILES

#include <mmf/server/mmffile.h>

#include <jdebug.h>

#include "cmmavideoplayer.h"

#include "mmmadisplay.h"

#include "cmmaeventsource.h"

#include "cmmadsawindow.h"

// CONSTANTS

_LIT(KVideoControlName, "VideoControl");

CMMAVideoPlayer* CMMAVideoPlayer::NewLC(

    CMMAMMFResolver* aResolver)

{

    CMMAVideoPlayer* self =

        new(ELeave) CMMAVideoPlayer(aResolver);

    CleanupStack::PushL(self);

    self->ConstructL();

    return self;

}

CMMAVideoPlayer::~CMMAVideoPlayer()

{

    DEBUG("MMA::CMMAVideoPlayer::~CMMAVideoPlayer");

    if (iDisplay)

    {

        TRAPD(err, iDisplay->SetWindowL(NULL));

        if (err != KErrNone)

        {

            __ASSERT_DEBUG(EFalse, User::Invariant());

        }

    }

    delete iDSAWindow;

    delete iEmptySnapshotImage;

    delete iActiveSchedulerWait;

}

CMMAVideoPlayer::CMMAVideoPlayer(

    CMMAMMFResolver* aResolver):

        CMMAAudioPlayer(aResolver),

        iVideoControllerCustomCommands(iController),

        iVideoPlayControllerCustomCommands(iController)

{

}

void CMMAVideoPlayer::ConstructL()

{

    CMMAAudioPlayer::ConstructL();

    iActiveSchedulerWait = new(ELeave)CActiveSchedulerWait;

}

EXPORT_C void CMMAVideoPlayer::SetPlayerListenerObjectL(jobject aListenerObject,

        JNIEnv* aJni,

        MMMAEventPoster* aEventPoster)

{

    CMMAPlayer::SetPlayerListenerObjectL(aListenerObject,

                                         aJni,

                                         aEventPoster);

    // this method must be called only ones

    __ASSERT_DEBUG(!iDSAWindow, User::Invariant());

    // create window for videoplayer

    // event poster is always CMMAEventSource type.

    iDSAWindow = CMMADSAWindow::NewL(

                     static_cast< CMMAEventSource* >(iEventPoster),

                     this,

                     &iVideoPlayControllerCustomCommands);

}

EXPORT_C void CMMAVideoPlayer::SetDisplayL(MMMADisplay* aDisplay)

{

    // now it is ready to draw

    iDisplay = aDisplay;

    iDisplay->SetWindowL(iDSAWindow);

    // if state < prefeteched then we dont know actual source size yet

    // and it will be set after prefetch

    if (iState >= EPrefetched)

    {

        SourceSizeChanged();

    }

}

void CMMAVideoPlayer::RealizeL()

{

    DEBUG("CMMAVideoPlayer::RealizeL");

    // DataSource must have at least 1 stream or

    // we must have file to play

    if ((iSourceStreams.Count() == 0) && !iFileName)

    {

        User::Leave(KErrNotEnoughStreams);

    }

    // If file locator is used, then file is prefetched

    // in realized state so that FramePositioningControl

    // can acquire frame count in REALIZED state

    if (iFileName)

    {

        PrefetchFileL();

        if (!iActiveSchedulerWait->IsStarted())

        {

            iActiveSchedulerWait->Start();

        }

        // If the player has not changed state during wait,

        // Then there is an error condition.

        if (iState != ERealized)

        {

            User::Leave(KErrNotSupported);

        }

    }

    else

    {

        CMMAPlayer::RealizeL();

    }

}

void CMMAVideoPlayer::PrefetchL()

{

    DEBUG("CMMAVideoPlayer::PrefetchL");

    if (iFileName)

    {

        // File has already been prefetched when realizing

        // If initDisplayMode was called before prefetch,

        // then the display must notified about source size.

        if (iDisplay)

        {

            SourceSizeChanged();

        }

        ChangeState(EPrefetched);

        PostActionCompleted(KErrNone);

    }

    else

    {

        // Using TDes -- load the whole video

        iSourceStreams[ 0 ]->ReadAllL();

    }

    // CMMASourceStream will notify with ReadCompleted

}

EXPORT_C void CMMAVideoPlayer::ReadCompletedL(TInt aStatus, const TDesC8& aData)

{

    DEBUG_INT("CMMAVideoPlayer::ReadCompletedL: status = %d", aStatus);

    if (aStatus < KErrNone)

    {

        PostActionCompleted(aStatus);

    }

    else

    {

        TRAPD(err, PrefetchDataL(aData));

        if (err != KErrNone)

        {

            PostActionCompleted(err);

        }

        // action completed event will be delivered from handleEvent

    }

}

void CMMAVideoPlayer::HandleEvent(const TMMFEvent& aEvent)

{

    DEBUG_INT("MMA:CMMAVideoPlayer::HandleEvent %d", aEvent.iEventType.iUid);

    // KNotCompleteVideoError can be notified when video is not complete

    // ( missing sound ) but still can be played. Because

    // CMMAAudioPlayer::HandleEvent fails with all negative error codes,

    // do not call it with KNotCompleteVideoError error when preparing.

    if ((aEvent.iErrorCode != KNotCompleteVideoError) ||

            (aEvent.iEventType != KMMFEventCategoryVideoPrepareComplete))

    {

        CMMAAudioPlayer::HandleEvent(aEvent);

    }

    // video opened, preparing

    if (aEvent.iEventType == KMMFEventCategoryVideoOpenComplete)

    {

        if (aEvent.iErrorCode == KErrNone)

        {

            TInt prepareError(iVideoPlayControllerCustomCommands.Prepare());

            if (prepareError != KErrNone)

            {

                // opening failed, notifying java

                PostActionCompleted(prepareError);

            }

        }

        else

        {

            // opening failed, notifying java

            PostActionCompleted(aEvent.iErrorCode);

        }

    }

    // final state of prefetch ( prepare completed )

    else if (aEvent.iEventType == KMMFEventCategoryVideoPrepareComplete)

    {

        // This callback must be handled differently depending on whether

        // player is created for a file locator or for a stream. When file

        // locator is used, this callback is made in realized state. For

        // stream it is made in prefetched state.

        PrepareDisplay();

        if (iFileName)

        {

            DEBUG("CMMAVideoPlayer::HandleEvent: Using filename, change state to REALIZED");

            // If there is an error condition, then the player state is not

            // changed, which indicates the error condition to StartL when

            // the ActiveSchedulerWait returns. KNotCompleteVideoError is not

            // considered as an error condition, instead it indicates that some

            // elements of the media cannot be played (e.g. video OR audio)

            if (aEvent.iErrorCode == KErrNone ||

                    aEvent.iErrorCode == KNotCompleteVideoError)

            {

                ChangeState(ERealized);

            }

            __ASSERT_DEBUG(iActiveSchedulerWait->IsStarted(), User::Invariant());

            iActiveSchedulerWait->AsyncStop();

        }

        else

        {

            DEBUG("CMMAVideoPlayer::HandleEvent: Not using filename, change state to PREFETCHED");

            CompletePrefetch(aEvent.iErrorCode);

        }

    }

    else            // in case of any other event

    {

        if (aEvent.iErrorCode != KErrNone)

        {

            PostActionCompleted(aEvent.iErrorCode);   //some other error

        }

    }

}

void CMMAVideoPlayer::CompletePrefetch(TInt aError)

{

    DEBUG_INT("CMMAVideoPlayer::CompletePrefetch + error = %d",aError);

    // Post KNotCompleteVideoError as KErrNone to the Java side, because

    // video can be played.

    if (aError == KNotCompleteVideoError)

    {

        DEBUG("CMMAVideoPlayer::CompletePrefetch  KNotCompleteVideoError ");

        // release java

        PostActionCompleted(KErrNone);

    }

    else

    {

        DEBUG("CMMAVideoPlayer::CompletePrefetch  CompleteVideoError ");

        // release java

        PostActionCompleted(aError);

    }

    if (aError == KErrNone || aError == KNotCompleteVideoError)

    {

        ChangeState(EPrefetched);

    }

    DEBUG("CMMAVideoPlayer::CompletePrefetch - ");

}

void CMMAVideoPlayer::PrepareDisplay()

{

    DEBUG("CMMAVideoPlayer::PrepareDisplay +");

    // construction should have leaved if iDSAWindow does not exist

    __ASSERT_DEBUG(iDSAWindow,

                   User::Panic(_L("CMMVideoPlayer::iDSAWindow is null"),

                               KErrArgument));

    // Video must be initially not visible

    DEBUG("CMMAVideoPlayer::PrepareDisplay: Initially aborting DSA");

    iVideoPlayControllerCustomCommands.DirectScreenAccessEvent(EAbortDSA);

    //First place where we are certain that source size can be fetched

    TSize sourceSize;

    TInt err = iVideoControllerCustomCommands.GetVideoFrameSize(sourceSize);

    DEBUG_INT("MID::CMMAVideoPlayer::PrepareDisplay: GetVideoFrameSize err = %d", err);

    // Still we did not get the size of video

    if ((err != KErrNone) ||

            (sourceSize.iWidth <= 0) ||

            (sourceSize.iHeight <= 0))

    {

        DEBUG("MID::CMMAVideoPlayer::PrepareDisplay: No sourcesize found, using DSAWindow size");

        // setting size to window size (client rect)

        sourceSize = iDSAWindow->WindowSize();

    }

    // If 1x1 was got (the default size of form), it must be replaced

    // with a valid size as controller will not accept 1x1.

    if ((sourceSize.iWidth < KMMAVideoMinDimension) ||

            (sourceSize.iHeight < KMMAVideoMinDimension))

    {

        DEBUG("MID::CMMAVideoPlayer::PrepareDisplay: Unacceptable source size, using failsafe");

        // This is a special case and ought to be used only in

        // the rare case that real size is not got from stream.

        sourceSize = TSize(KMMAVideoMinDimension, KMMAVideoMinDimension);

    }

    iSourceSize = sourceSize;

    // If init has been already done

    if (iDisplay)

    {

        DEBUG("MID::CMMAVideoPlayer::PrepareDisplay: display exists, changing source size");

        SourceSizeChanged();

    }

    // Setting (in)visible if something has changed the DSA state

    // (e.g. prepare). If initDisplayMode is not called, this will always

    // set visibility to false.

    iDSAWindow->SetVisible(iDSAWindow->IsVisible(), EFalse);

    DEBUG("CMMAVideoPlayer::PrepareDisplay -");

}

EXPORT_C const TDesC& CMMAVideoPlayer::Type()

{

    return KMMAVideoPlayer;

}

EXPORT_C TSize CMMAVideoPlayer::SourceSize()

{

    return iSourceSize;

}

EXPORT_C MMMASnapshot::TEncoding CMMAVideoPlayer::TakeSnapshotL(TRequestStatus* aStatus,

        const TSize& /*aSize*/,

        const CMMAImageSettings& /*aSettings*/)

{

    if (iEmptySnapshotImage)

    {

        // Ealier snapshot was not got with SnapshotBitmap method.

        User::Leave(KErrInUse);

    }

    // frame can't be got from video player, but TCK requires that it should

    // be available. So returning empty image

    iEmptySnapshotImage = new(ELeave) CFbsBitmap();

    User::LeaveIfError(iEmptySnapshotImage->Create(TSize(1, 1),

                       EColor4K));

    User::RequestComplete(aStatus, KErrNone);

    // Return raw bitmap encoding and thus SnapshotEncoded() should not

    // get called later on.

    return EBitmap;

}

EXPORT_C CFbsBitmap* CMMAVideoPlayer::SnapshotBitmap()

{

    // snapshot is not supported, returning empty image

    CFbsBitmap* image = iEmptySnapshotImage;

    // ownership is transferred to caller

    iEmptySnapshotImage = NULL;

    return image;

}

EXPORT_C HBufC8* CMMAVideoPlayer::SnapshotEncoded()

{

    // This method should never be called.

    // Asserted in debug build to be sure.

    __ASSERT_DEBUG(EFalse, User::Invariant());

    return NULL;

}

EXPORT_C void CMMAVideoPlayer::NotifyWithStringEvent(

    CMMAPlayerEvent::TEventType aEventType,

    const TDesC& aStringEventData)

{

    PostStringEvent(aEventType, aStringEventData);

}

EXPORT_C MMMASnapshot* CMMAVideoPlayer::SnapshoterL()

{

    return this;

}

void CMMAVideoPlayer::SourceSizeChanged()

{

    iDisplay->SourceSizeChanged(iSourceSize);

    NotifyWithStringEvent(CMMAPlayerEvent::ESizeChanged, KVideoControlName);

}

//  END OF FILE