1 /*

     2 * Copyright (c) 2002 Nokia Corporation and/or its subsidiary(-ies).

     3 * All rights reserved.

     4 * This component and the accompanying materials are made available

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

     6 * which accompanies this distribution, and is available

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

     8 *

     9 * Initial Contributors:

    10 * Nokia Corporation - initial contribution.

    11 *

    12 * Contributors:

    13 *

    14 * Description:  This class implements FramePositioningControl for animation

    15 *

    16 */

    17 

    18 

    19 //  INCLUDE FILES

    20 #include <jdebug.h>

    21 #include <e32base.h>

    22 

    23 #include "MIHLImageViewer.h"

    24 #include "cmmaanimationframepositioningcontrol.h"

    25 

    26 CMMAAnimationFramePositioningControl*

    27 CMMAAnimationFramePositioningControl::NewL(CMMAAnimationPlayer* aPlayer)

    28 {

    29     CMMAAnimationFramePositioningControl* self =

    30         new(ELeave) CMMAAnimationFramePositioningControl(aPlayer);

    31     return self;

    32 }

    33 

    34 CMMAAnimationFramePositioningControl::

    35 CMMAAnimationFramePositioningControl(CMMAAnimationPlayer* aPlayer)

    36         : CMMAFramePositioningControl(aPlayer), iPlayer(aPlayer)

    37 {

    38     DEBUG("MMA:CMMAAnimationFramePositioningControl::CMMAAnimationFramePositioningControl");

    39 }

    40 

    41 CMMAAnimationFramePositioningControl::~CMMAAnimationFramePositioningControl()

    42 {

    43     DEBUG("MMA:CMMAAnimationFramePositioningControl::~CMMAAnimationFramePositioningControl");

    44 }

    45 

    46 TInt CMMAAnimationFramePositioningControl::SeekL(TInt aFrameNumber)

    47 {

    48     DEBUG("CMMAAnimationFramePositioningControl::SeekL");

    49     MIHLImageViewer* viewer = iPlayer->Viewer();

    50     if (!viewer)

    51     {

    52         return KErrNotFound;

    53     }

    54     TInt frameNumber = FindFrame(viewer, aFrameNumber);

    55     TInt64 mediaTime = iPlayer->MediaTimeForFrame(frameNumber);

    56     // adjust wanted media time to get right frame (equal value returns one too small)

    57     mediaTime++;

    58     iPlayer->SetMediaTimeL(&mediaTime);

    59     frameNumber = viewer->AnimationFrame();

    60     return frameNumber;

    61 }

    62 

    63 TInt CMMAAnimationFramePositioningControl::SkipL(TInt aFramesToSkip)

    64 {

    65     DEBUG("CMMAAnimationFramePositioningControl::SkipL");

    66     MIHLImageViewer* viewer = iPlayer->Viewer();

    67     if (!viewer)

    68     {

    69         return KErrNotFound;

    70     }

    71 

    72     TInt frameNumber = viewer->AnimationFrame();

    73 

    74     SeekL(frameNumber + aFramesToSkip);

    75 

    76     // Calculate number of frames skipped

    77     return viewer->AnimationFrame() - frameNumber;

    78 }

    79 

    80 void CMMAAnimationFramePositioningControl::MapFrameToTimeL(

    81     TInt aFrameNumber,

    82     TInt64* aMediaTime)

    83 {

    84     DEBUG("CMMAAnimationFramePositioningControl::MapFrameToTimeL");

    85     MIHLImageViewer* viewer = iPlayer->Viewer();

    86     if (!viewer || (aFrameNumber < 0) ||

    87             (aFrameNumber >= viewer->AnimationFrameCount()))

    88     {

    89         *aMediaTime = KErrNotFound;

    90     }

    91     else

    92     {

    93         *aMediaTime = iPlayer->MediaTimeForFrame(aFrameNumber);

    94     }

    95 }

    96 TInt CMMAAnimationFramePositioningControl::MapTimeToFrameL(

    97     TInt64* aMediaTime)

    98 {

    99     DEBUG("CMMAAnimationFramePositioningControl::MapTimeToFrameL");

   100     MIHLImageViewer* viewer = iPlayer->Viewer();

   101     TInt64 duration;

   102     iPlayer->GetDuration(&duration);

   103     if (!viewer || (*aMediaTime < 0) ||

   104             (duration == KErrNotFound))

   105     {

   106         return KErrNotFound;

   107     }

   108     return iPlayer->FindFrame(*aMediaTime);

   109 }

   110 

   111 TInt CMMAAnimationFramePositioningControl::FindFrame(MIHLImageViewer* aViewer, TInt aFrameNumber)

   112 {

   113     TInt frame = 0;

   114     TInt count = aViewer->AnimationFrameCount();

   115     if (aFrameNumber >= count)

   116     {

   117         frame = count - 1;

   118     }

   119     else if (aFrameNumber > 0)

   120     {

   121         frame = aFrameNumber;

   122     }

   123     return frame;

   124 }

   125 

   126 //  END OF FILE