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1 /* |
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2 * Copyright (c) 2006 Nokia Corporation and/or its subsidiary(-ies). |
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3 * All rights reserved. |
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4 * This component and the accompanying materials are made available |
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5 * under the terms of "Eclipse Public License v1.0" |
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6 * which accompanies this distribution, and is available |
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7 * at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 * |
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9 * Initial Contributors: |
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10 * Nokia Corporation - initial contribution. |
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11 * |
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12 * Contributors: |
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13 * |
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14 * Description: |
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15 * CDCIETD |
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16 * Display specific color contrast enhancement, |
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17 * Image Enhancement for Transflective Displays version 2, |
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18 * IETD 2. |
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19 * |
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20 */ |
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21 |
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22 |
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23 #ifndef __DCIetd_H__ |
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24 #define __DCIetd_H__ |
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25 |
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26 // INCLUDES |
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27 |
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28 #ifndef __E32STD_H__ |
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29 #include <e32std.h> // for Fundamental Types |
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30 #endif // __E32STD_H__ |
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31 |
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32 #ifndef __E32BASE_H__ |
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33 #include <e32base.h> // for CBase |
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34 #endif // __E32BASE_H__ |
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35 |
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36 //Default parameters |
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37 #include "DCInit.h" |
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38 |
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39 |
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40 //------------------- |
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41 // CLASS DEFINITIONS |
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42 // CDCIetd - The one and ony class to contain all required methods |
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43 // to implement DCIetd functionality. |
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44 class CDCIetd : public CBase |
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45 { |
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46 public: |
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47 |
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48 //Parameter struct |
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49 struct DCIetdParameters |
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50 { |
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51 TUint8 aWhitePixels; //Percentage of pixels stretched to maximum value |
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52 TUint8 aBlackPixels; //Percentage of pixels stretched to minimum value |
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53 TUint8 aStretchLimit; //Narrowest histogram to be stretched to full range |
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54 TUint8 aSaturationGain; //Saturation increase gain |
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55 TUint8 aBitLimit; //Minimum number of color values for full gain |
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56 TUint8 aWBC; //White balance correction limit |
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57 TUint8 aDBC; //Dark balance correction limit |
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58 }; |
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59 |
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60 CDCIetd(); // Constructor |
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61 static CDCIetd* NewL(); // Factory function NewL |
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62 static CDCIetd* NewLC();// Factory function NewLC |
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63 ~CDCIetd(); // Destructor |
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64 void ConstructL(); // Second Phase contructor (may leave) |
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65 |
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66 // Analyze image referenced by aBPtr |
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67 void Analyze(CFbsBitmap& aBPtr); |
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68 |
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69 // Process and store image referenced by aBPtr |
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70 void ProcessL(CFbsBitmap& aBPtr); |
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71 |
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72 // Parameter exchange |
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73 void SetParams(DCIetdParameters* parameters); |
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74 void GetParams(DCIetdParameters* parameters); |
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75 |
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76 private: |
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77 |
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78 void GatherHistograms(const CFbsBitmap& aBPtr); // Construct the R, G, and B Histograms |
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79 void MakeMappings(); // Calculate the mapping LUTs |
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80 |
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81 // Limit integer value to byte [0,255] |
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82 static inline TUint8 Limit255(TInt i) {return (TUint8)(i<0?0:(i>255?255:i));} |
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83 |
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84 TUint iHistogram[3][256]; // Histogram data |
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85 TUint8 iMap[3][256]; // Color component mapping funtions |
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86 HBufC8* iScanLineBuffer; // Scan line buffer |
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87 |
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88 TUint8 iReducedStretchLimit[3]; //Stretch limits for each component |
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89 |
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90 DCIetdParameters iParameters; //Parameters |
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91 }; |
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92 |
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93 #endif // __DCIetd_H__ |
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94 |
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95 // End of File |
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96 //----IMAAMI---- |