1 /* |
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2 * Copyright (c) 2010 Ixonos Plc. |
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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 the "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 * Ixonos Plc |
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14 * |
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15 * Description: |
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16 * |
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17 */ |
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18 |
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19 |
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20 // INCLUDE FILES |
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21 #ifndef IMAGECONVERTER_H |
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22 #define IMAGECONVERTER_H |
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23 |
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24 #include <e32std.h> |
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25 #include <e32base.h> |
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26 #include <f32file.h> |
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27 #include <ImageConversion.h> |
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28 |
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29 class CFbsBitmap; |
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30 class CBitmapRotator; |
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31 class CBitmapScaler; |
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32 |
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33 /** |
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34 * Observer for notifying that image conversion is ready. |
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35 * |
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36 */ |
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37 class MConverterController |
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38 { |
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39 public: |
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40 /** |
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41 * Called to notify that image conversion is completed |
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42 * |
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43 */ |
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44 virtual void NotifyCompletion( TInt aErr ) = 0; |
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45 |
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46 }; |
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47 /** |
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48 * Utility class for image conversion. |
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49 */ |
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50 NONSHARABLE_CLASS( CVeiImageConverter ) : public CActive |
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51 { |
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52 // states for this object |
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53 enum TState |
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54 { |
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55 EIdle = 0, |
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56 EEncoding, |
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57 EScaling |
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58 }; |
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59 |
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60 public: // contructors/destructors |
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61 |
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62 /** |
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63 * NewL |
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64 * Create a CVeiImageConverter object and return a pointer to it. |
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65 * |
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66 * @param aController Pointer to a MConverterController interface. |
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67 * The engine uses NotifyCompletion callback from this interface |
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68 * to notify the controller about completions of coding or |
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69 * encoding requests. |
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70 * |
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71 * @return a pointer to the created engine |
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72 */ |
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73 IMPORT_C static CVeiImageConverter* NewL( MConverterController* aController ); |
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74 |
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75 IMPORT_C ~CVeiImageConverter(); |
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76 |
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77 public: // interface methods |
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78 |
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79 IMPORT_C CFbsBitmap* GetBitmap(); |
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80 IMPORT_C void SetBitmap(CFbsBitmap* aBitmap); |
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81 |
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82 /** StartToEncodeL |
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83 * Starts to encode an image to a file. When completed calls |
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84 * NotifyCompletion, from iController. |
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85 * |
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86 * @param aFileName Full path and filename to the image to be encoded. |
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87 * |
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88 * @returns Nothing |
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89 */ |
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90 IMPORT_C void StartToEncodeL( const TDesC& aFileName, |
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91 const TUid& aImageType, const TUid& aImageSubType ); |
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92 |
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93 /** |
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94 * GetEncoderImageTypesL |
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95 * Gets descriptions of supported (encoding) image types. |
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96 * |
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97 * @param aImageTypeArray Reference to an array to be filled. |
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98 * |
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99 * @return Nothing |
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100 */ |
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101 IMPORT_C static void GetEncoderImageTypesL( |
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102 RImageTypeDescriptionArray& aImageTypeArray ); |
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103 |
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104 IMPORT_C void CancelEncoding(); |
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105 |
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106 IMPORT_C void ScaleL(CFbsBitmap* aSrcBitmap,CFbsBitmap* aDestBitmap, const TSize& aSize); |
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107 |
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108 |
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109 protected: // implementation of CActive |
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110 void DoCancel(); |
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111 void RunL(); |
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112 TInt RunError(TInt aError); |
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113 |
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114 private: // internal methods |
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115 CVeiImageConverter( MConverterController* aController ); |
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116 void ConstructL(); |
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117 |
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118 public: // data |
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119 |
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120 /** Decoded image. */ |
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121 CFbsBitmap* iBitmap; |
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122 |
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123 private: // internal data |
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124 |
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125 /** ui controller. */ |
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126 MConverterController* iController; |
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127 |
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128 /** for opening/saving images from/to files. */ |
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129 RFs iFs; |
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130 |
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131 /** decoder from ICL API. */ |
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132 //CImageDecoder* iImageDecoder; // |
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133 |
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134 /** encoder from ICL API. */ |
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135 CImageEncoder* iImageEncoder; |
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136 CBitmapScaler* iBitmapScaler; |
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137 |
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138 TState iState; |
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139 }; |
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140 |
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141 #endif |
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