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1 /* |
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2 * Copyright (c) 2000 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 the License "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 * |
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16 */ |
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17 |
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18 |
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19 /* CEpoc32ImageDecoder class |
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20 * |
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21 * Every non-canned image has an image decoder associated with it. This is opened |
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22 * when the image is created in order to get the size. This is an asynchronous |
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23 * operation; "MiuoOpenComplete" is called when the opening is complete. |
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24 * |
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25 * The first time an image is displayed, "Decode" is called, which starts the |
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26 * asynchrounous decoding process. When this completes, the image object is |
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27 * updated with the decoded image, which then causes the new image to be |
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28 * displayed. |
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29 * |
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30 * A decode is also done every time the frame number of an animated image is |
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31 * changed. |
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32 */ |
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33 |
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34 #ifndef EPOC32IMAGEDECODER_H |
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35 #define EPOC32IMAGEDECODER_H |
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36 |
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37 // INCLUDES |
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38 |
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39 #include <e32base.h> |
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40 #include <ImageConversion.h> |
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41 |
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42 #include "nw_image_epoc32simpleimage.h" |
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43 |
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44 // FORWARD DECLARATIONS |
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45 // #define INCREMENTAL_IMAGE_ON |
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46 |
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47 class CFbsBitmap; |
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48 |
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49 // CLASS DECLARATION |
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50 |
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51 class CEpoc32ImageDecoder : public CActive |
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52 { |
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53 public: |
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54 static CEpoc32ImageDecoder* NewL(NW_Image_Epoc32Simple_t* aImage); |
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55 void ConstructL(); |
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56 void RunL(); |
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57 void DoCancel() {iImageConverter->Cancel();} |
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58 |
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59 virtual ~CEpoc32ImageDecoder(); |
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60 |
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61 /*! |
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62 @function Decode |
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63 @discussion Opens data into fbsBitmap. |
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64 */ |
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65 void Open(); |
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66 |
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67 /*! |
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68 @function Decode |
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69 @discussion Converts data into fbsBitmap. |
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70 */ |
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71 TInt Decode(); |
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72 |
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73 NW_Bool IncrementImage(NW_Bool& startingFrameSequenceOver); |
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74 |
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75 /*! |
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76 @function PartialNextChunkL |
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77 @discussion new chunk of raw data |
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78 */ |
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79 void PartialNextChunkL( NW_Buffer_t* aNextChunk ); |
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80 |
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81 /*! |
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82 @function ImageDataComplete |
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83 @discussion end of raw data |
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84 */ |
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85 void ImageDataComplete(); |
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86 |
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87 |
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88 /*! |
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89 @function ResetImage |
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90 @discussion display the last frame of an animated image |
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91 */ |
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92 void ResetImage(); |
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93 |
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94 /*! |
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95 @function Finished |
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96 @discussion Finished animating image. |
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97 */ |
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98 TBool Finished(); |
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99 |
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100 |
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101 inline void SetImageHasNotBeenOpened (NW_Bool aImageHasNotBeenOpened) { iImageHasNotBeenOpened = aImageHasNotBeenOpened; } |
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102 |
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103 enum TDecoderState |
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104 { |
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105 ID_IDLE = 0, |
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106 ID_INITIALIZING, |
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107 ID_DECODING, |
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108 // state added to check if the decoding is already complete |
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109 ID_DECODE_COMPLETE |
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110 }; |
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111 /* |
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112 @function getDecoderState |
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113 @discussion Return the current state of the decoder |
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114 */ |
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115 |
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116 inline TDecoderState getDecoderState() { return iState; } |
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117 |
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118 private: |
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119 |
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120 void DoDecodeL(); |
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121 |
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122 CEpoc32ImageDecoder(NW_Image_Epoc32Simple_t* aImage); |
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123 |
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124 /*! |
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125 @function OpenComplete |
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126 |
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127 @discussion Called when the image file has been opened |
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128 */ |
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129 void OpenComplete(); |
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130 |
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131 /*! |
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132 @function ConvertComplete |
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133 |
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134 @discussion Called when conversion process performed on the bitmap is complete |
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135 */ |
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136 void ConvertComplete(); |
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137 |
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138 /*! |
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139 @function CreateComplete |
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140 |
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141 @discussion Called when the file in which the bitmap is to be saved has been created |
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142 */ |
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143 void CreateComplete( TInt aError ); |
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144 |
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145 TDisplayMode GetDisplayMode( TFrameInfo& aFrameInfo ); |
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146 |
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147 void CheckAnimation(); |
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148 void DeleteImageConverterBitmapMask(); |
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149 TInt16 GetLoopCount(); |
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150 |
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151 /* |
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152 * imageSizeCheck: This compares the original image size with |
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153 * that specified in the <img src = ".." width="" height="">. Then |
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154 * creates bit map accordingly. The value is return true if the |
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155 * <img> tag attribute values need to be used. |
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156 */ |
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157 |
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158 NW_Bool ImageSizeCheck(TSize iFrameInfoOverallSize, TSize* sizeSet); |
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159 TInt ImgAttrInfo(); |
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160 TInt CheckForDRMImage(); |
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161 |
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162 private: |
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163 enum TDecoderState iState; // Current decoder operation |
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164 |
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165 CBufferedImageDecoder* iImageConverter; // Connection to media server |
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166 |
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167 NW_Image_Epoc32Simple_t* iImage;// OOC image |
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168 TPtrC8 iImageDataPtr; // Raw unconverted image data |
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169 TFrameInfo iFrameInfo; // Info about image from media server |
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170 NW_Bool iIsAnimated; // NW_TRUE if more than one frame in image |
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171 TUint iCurrentFrame; // Number of current frame displayed |
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172 CFbsBitmap* iBitmap; // Decoded bitmap |
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173 CFbsBitmap* iMask; // Decoded bitmap mask |
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174 NW_Bool iImageHasNotBeenOpened; // NW_TRUE the first time an image is opened |
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175 TBool iMoreData; // iMoreData |
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176 TBool iFirstFrameComplete; // first frame complete |
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177 TBool iRawDataComplete; // we've got all the raw data |
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178 RFs iRfs; // A dummy parameter required by the Symbian API |
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179 TUint8 *iDRMOutBuf; //Outputput buffer for the DRM decryption. |
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180 TBool iFinished; // Finished animating image. |
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181 }; |
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182 |
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183 #endif |