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1 /* |
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2 * Copyright (c) 2002 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: Image conversion class |
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15 * |
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16 */ |
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17 |
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18 |
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19 #ifndef BTSU_IMAGE_CONVERTER_H |
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20 #define BTSU_IMAGE_CONVERTER_H |
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21 |
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22 // INCLUDES |
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23 #include <f32file.h> |
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24 #include <badesca.h> |
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25 |
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26 // CONSTANTS |
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27 |
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28 // FORWARD DECLARATIONS |
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29 class CImageDecoder; |
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30 class CImageEncoder; |
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31 class CFrameImageData; |
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32 class CBitmapScaler; |
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33 class CFbsBitmap; |
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34 |
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35 // CLASS DECLARATION |
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36 |
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37 /** |
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38 * A class for executing simple image conversion tasks. |
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39 */ |
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40 NONSHARABLE_CLASS (CBTSUImageConverter) : public CActive |
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41 { |
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42 |
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43 public: // Constructor and destructor |
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44 |
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45 /** |
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46 * Two-phased constructor. |
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47 * @param None. |
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48 */ |
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49 static CBTSUImageConverter* NewL(); |
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50 |
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51 /** |
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52 * Destructor. |
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53 */ |
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54 ~CBTSUImageConverter(); |
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55 |
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56 public: // New functions |
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57 |
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58 /** |
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59 * Returns the pixel size of the given image. |
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60 * @param aImageFile A file handle of image file. |
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61 * @return The pixel size. |
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62 */ |
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63 TSize GetImageSizeL( RFile& aImageFile ); |
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64 |
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65 /** |
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66 * Create a thumbnail version of the source image. |
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67 * @param aSourceFile A filehandle of sourcefile. |
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68 * @param aDestFile Full path for the destination file. |
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69 * @return None. |
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70 */ |
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71 void CreateThumbnailL( RFile& aSourceFile, |
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72 const TDesC& aDestFile ); |
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73 |
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74 /** |
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75 * Finds a display name for the given mime type. |
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76 * @param aMimeType Mime type |
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77 * @return A pointer to the name. |
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78 */ |
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79 static HBufC* GetDisplayNameL( const TDesC8& aMimeType ); |
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80 |
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81 private: // Functions from base classes |
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82 |
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83 /** |
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84 * From CActive Get's called when a request is cancelled. |
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85 * @return None. |
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86 */ |
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87 void DoCancel(); |
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88 |
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89 /** |
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90 * From CActive Get's called when a request is completed. |
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91 * @return None. |
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92 */ |
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93 void RunL(); |
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94 |
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95 private: |
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96 |
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97 /** |
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98 * C++ default constructor. |
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99 */ |
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100 CBTSUImageConverter(); |
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101 |
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102 /** |
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103 * Symbian 2nd phase constructor. |
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104 */ |
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105 void ConstructL(); |
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106 |
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107 /** |
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108 * Decode image. |
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109 * @param aSourceFile A filehandle of source file. |
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110 * @return None |
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111 */ |
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112 void DecodeImageL( RFile& aSourceFile ); |
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113 |
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114 /** |
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115 * Encode image. |
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116 * @param aDestFile Full path for the destination file. |
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117 * @param aThumbnail ETrue enables thumbnail creation |
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118 * @return None |
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119 */ |
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120 void EncodeImageL( const TDesC& aDestFile, |
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121 const TBool& aThumbnail = EFalse ); |
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122 |
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123 /** |
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124 * Scale image. |
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125 * @return None |
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126 */ |
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127 void ScaleImageL(); |
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128 |
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129 /** |
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130 * Reset internal state. |
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131 * @return None. |
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132 */ |
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133 void Reset(); |
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134 |
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135 private: // Data |
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136 |
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137 CImageDecoder* iDecoder; |
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138 CImageEncoder* iEncoder; |
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139 CBitmapScaler* iScaler; |
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140 |
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141 CFrameImageData* iFrameImageData; |
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142 CFbsBitmap* iFrameBitmap; |
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143 CFbsBitmap* iScaledBitmap; |
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144 RFs iFileSession; |
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145 |
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146 CActiveSchedulerWait iWait; |
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147 }; |
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148 |
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149 |
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150 #endif // BTSU_IMAGE_CONVERTER_H |