author | Mikael Laine <mikael.laine@ixonos.com> |
Fri, 29 Jan 2010 14:08:33 +0200 | |
changeset 0 | 951a5db380a0 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010 Ixonos Plc. |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - Initial contribution |
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* |
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* Contributors: |
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* Ixonos Plc |
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* |
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* Description: |
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* |
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*/ |
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//----IMAAMI---- |
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//************************************************************************* |
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//CDCIETD.h |
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// |
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//Version 2.00 |
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// |
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//Contains: |
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// CDCIETD |
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// Display specific color contrast enhancement, |
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// Image Enhancement for Transflective Displays version 2, |
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// IETD 2. |
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// |
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// The class implements the following image enhancements algorithms: |
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// - Histogram guided contrast stretch |
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// - Color saturation increase |
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// |
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// Usage: |
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// - First an instance of this class is created by factory functions NewL() or NewLC. |
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// - All settings and configurations can be done by calling function SetParams(). |
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// Current parameters can be checked by calling function GetParams(). |
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// - Then the The Analyze() function is called with CFbsBitmap as an argumet. |
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// This function have to be called at least once before ProcessL(). |
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// - Then the The ProcessL() function is called with CFbsBitmap as an argumet. |
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// The bitmap is handled in place so this function modifies the given bitmap. |
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// |
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//History: |
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// 23.10.2003 version 2.00 created using existing IMAAMI IETD |
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//************************************************************************* |
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#ifndef __DCIetd_H__ |
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#define __DCIetd_H__ |
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// INCLUDES |
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|
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#ifndef __E32STD_H__ |
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#include <e32std.h> // for Fundamental Types |
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#endif // __E32STD_H__ |
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#ifndef __E32BASE_H__ |
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#include <e32base.h> // for CBase |
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#endif // __E32BASE_H__ |
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//Default parameters |
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#include "DCInit.h" |
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//------------------- |
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// CLASS DEFINITIONS |
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// CDCIetd - The one and ony class to contain all required methods |
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// to implement DCIetd functionality. |
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class CDCIetd : public CBase |
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{ |
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public: |
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//Parameter struct |
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struct DCIetdParameters |
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{ |
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TUint8 aWhitePixels; //Percentage of pixels stretched to maximum value |
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TUint8 aBlackPixels; //Percentage of pixels stretched to minimum value |
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TUint8 aStretchLimit; //Narrowest histogram to be stretched to full range |
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TUint8 aSaturationGain; //Saturation increase gain |
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TUint8 aBitLimit; //Minimum number of color values for full gain |
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TUint8 aWBC; //White balance correction limit |
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TUint8 aDBC; //Dark balance correction limit |
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}; |
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CDCIetd(); // Constructor |
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static CDCIetd* NewL(); // Factory function NewL |
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static CDCIetd* NewLC();// Factory function NewLC |
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~CDCIetd(); // Destructor |
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void ConstructL(); // Second Phase contructor (may leave) |
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// Analyze image referenced by aBPtr |
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void Analyze(CFbsBitmap& aBPtr); |
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// Process and store image referenced by aBPtr |
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void ProcessL(CFbsBitmap& aBPtr); |
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// Parameter exchange |
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void SetParams(DCIetdParameters* parameters); |
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void GetParams(DCIetdParameters* parameters); |
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private: |
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void GatherHistograms(const CFbsBitmap& aBPtr); // Construct the R, G, and B Histograms |
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void MakeMappings(); // Calculate the mapping LUTs |
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// Limit integer value to byte [0,255] |
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static inline TUint8 Limit255(TInt i) {return (TUint8)(i<0?0:(i>255?255:i));} |
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TUint iHistogram[3][256]; // Histogram data |
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TUint8 iMap[3][256]; // Color component mapping funtions |
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HBufC8* iScanLineBuffer; // Scan line buffer |
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TUint8 iReducedStretchLimit[3]; //Stretch limits for each component |
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DCIetdParameters iParameters; //Parameters |
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}; |
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#endif // __DCIetd_H__ |
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// End of File |
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//----IMAAMI---- |