author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Fri, 19 Mar 2010 09:52:28 +0200 | |
changeset 65 | 5bfc169077b2 |
parent 38 | 6297cdf66332 |
child 66 | cacf6ee57968 |
permissions | -rw-r--r-- |
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/* |
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* ============================================================================== |
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* Copyright (c) 2006, Nokia Corporation |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* * Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* * Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* * Neither the name of the Nokia Corporation nor the names of its |
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* contributors may be used to endorse or promote products derived |
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* from this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
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* USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH |
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* DAMAGE. |
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* |
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* ============================================================================== |
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*/ |
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|
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/* |
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* This class is wrapped by a proxy CAnimationDecoder |
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* |
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* We needed to wrap animation decoding in a proxy because sometimes the cache gets cleared when decoding |
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* is in progress; when that happens the animation gets deleted while it's in the middle (which causes all sorts |
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* of crashes and memory stomping). Now, the cache can delete the proxy while the animation is decoding; the proxy |
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* will pass on the delete request to the decoder which will cleanup (delete itself) when it's safe to do so. |
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* |
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*/ |
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#ifndef ANIMATIONDECODERWRAPPED_H_ |
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#define ANIMATIONDECODERWRAPPED_H_ |
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|
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// INCLUDES |
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#include <e32base.h> |
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#include <imageconversion.h> // TFrameInfo |
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// FORWARD DECLARATIONS |
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class CMaskedBitmap; |
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class CBufferedImageDecoder; |
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class CSynDecodeThread; |
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namespace WebCore { |
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class ImageObserver; |
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} |
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// CONSTANTS |
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_LIT(KMimeJPEG, "image/jpeg"); |
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_LIT(KMimeJPG, "image/jpg"); |
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_LIT(KMimeGIF, "image/gif"); |
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_LIT(KMimePNG, "image/png"); |
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_LIT(KMimeTIFF, "image/tiff"); |
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_LIT(KMimeBMP, "image/bmp"); |
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_LIT(KMimeWBMP, "image/vnd.wap.wbmp"); |
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_LIT(KMimeWMF, "application/x-msmetafile"); |
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_LIT(KMimeMBM, "image/x-epoc-mbm"); |
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_LIT(KMimeOTA, "image/vnd.nokia.ota-bitmap"); |
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_LIT(KMimeICO, "image/x-icon"); |
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_LIT(KMimeDRM, "application/vnd.oma.drm.content"); |
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//const TDisplayMode KMaxDepth = EColor64K; |
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// FIXME: we should move this back to EColor64K after Symbian fix their Gif image decoder bug. |
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const TDisplayMode KMaxDepth = EColor16M; |
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// CLASS DECLARATION |
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/** |
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* CAnimationDecoderWrapped |
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* |
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* Implementation of file based image class. |
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* @lib IHL.lib |
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* @since 3.0 |
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*/ |
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class CAnimationDecoderWrapped : public CActive |
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{ |
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public: // Constructors and destructor |
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/** |
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* Two-phased constructor. |
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*/ |
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static CAnimationDecoderWrapped* NewL(WebCore::ImageObserver* aObs); |
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/* |
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* Virtual destructor. |
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*/ |
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virtual ~CAnimationDecoderWrapped(); |
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public: |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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void OpenL( const TDesC8& aData, TDesC* aMIMEType, TBool aIsComplete ); |
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void OpenAndDecodeSyncL( const TDesC8& aData ); |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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void AddDataL( const TDesC8& aData, TBool aIsComplete ); |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TSize Size() const { return iFrameInfo.iOverallSizeInPixels; } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TDisplayMode DisplayMode() const { return KMaxDepth; } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TDisplayMode MaskDisplayMode() const; |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TRgb BackgroundColor() const { return iFrameInfo.iBackgroundColor; } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TBool IsAnimation() const { return iAnimation; } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TInt AnimationFrameCount() const { return iAnimationFrameCount; } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TTimeIntervalMicroSeconds32 AnimationFrameDelay( TInt aAnimationFrameIndex ) const; |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TInt LoadFrame( TInt aFrameIndex ); |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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TBool IsBusy() const { return ( iImageState != EInactive ); } |
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/* |
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* From MIHLFileImage, see base class header. |
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*/ |
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void CancelLoad() { Cancel(); } |
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TBool IsOpen() const { return iDecoder!=0; } |
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//funtions related to Loop count of animation image. |
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TInt16 getLoopCount(){return iCurLoopCount;}; |
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void resetLoopCount(){iCurLoopCount = iLoopCount;}; |
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void decreamentLoopCount(){ iCurLoopCount--;}; |
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CMaskedBitmap* Destination(); |
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TBool isSizeAvailable() const { return iSizeAvailable; } |
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TBool decodeInProgress() const { return iDecodeInProgress; } |
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/** |
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* Mark the object invalid (to be deleted); used when it gets cleared from the cache |
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*/ |
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void Invalidate(); |
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private: // From base class CActive |
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/* |
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* From CActive, see base class header. |
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*/ |
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void DoCancel(); |
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/* |
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* From CActive, see base class header. |
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*/ |
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void RunL(); |
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/* |
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* From CActive, see base class header. |
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*/ |
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TInt RunError( TInt aError ); |
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private: // Private methods |
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void StartDecodingL(); |
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void StartLoadL(); |
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void StartLoadNormalBitmap( TInt aFrameIndex ); |
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void StartLoadAnimationBitmapL( TInt aFrameIndex ); |
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void CompleteLoadL(); |
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void BuildAnimationFrameL(); |
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void ErrorCleanup(); |
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void SelfComplete( TInt aError = KErrNone ); |
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HBufC8* DecodeDRMImageContentL(const TDesC8& aData); |
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private: // Private constructors |
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CAnimationDecoderWrapped(WebCore::ImageObserver* aObs); |
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void ConstructL( ); |
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private: // Private data types |
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enum TImageState |
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{ |
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EInactive, |
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EStartLoad, |
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ECompleteLoad, |
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}; |
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private: // Data |
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// Image status & state |
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TRequestStatus* iImageStatus; |
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TImageState iImageState; |
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// Own: Image decoder |
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CBufferedImageDecoder* iDecoder; // owned |
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TFrameInfo iFrameInfo; |
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TBool iAnimation; |
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TInt iAnimationFrameCount; |
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// Ref: Destination bitmap |
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CMaskedBitmap* iDestination; |
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TInt iFrameIndex; |
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// Own: Temporary animation bitmap |
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CMaskedBitmap* iAnimationBitmap; // owned |
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TInt iAnimationFrameIndex; |
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WebCore::ImageObserver* iObserver; // not owned |
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TBool iRawDataComplete; |
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//Loop count for animation image. Default to -1 -- loop forever |
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TInt16 iLoopCount; |
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TInt16 iCurLoopCount; |
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TBool iSizeAvailable; |
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TInt iSyncBitmapHandle; |
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TBool iSyncMaskHandle; |
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TBool iDecodeInProgress; |
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static CSynDecodeThread* iSyncDecodeThread; // sync decoder thread |
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HBufC8* iDrmContent; |
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// Is invalid because the cache got cleared in the middle of decoding |
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TBool iIsInvalid; |
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TBool iCanBeDeleted; |
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}; |
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#endif /* ANIMATIONDECODERWRAPPED_H_ */ |
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// End of File |