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1096
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1 /**
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2 * Copyright (c) 2006-2012 LOVE Development Team
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3 *
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4 * This software is provided 'as-is', without any express or implied
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5 * warranty. In no event will the authors be held liable for any damages
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6 * arising from the use of this software.
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7 *
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8 * Permission is granted to anyone to use this software for any purpose,
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9 * including commercial applications, and to alter it and redistribute it
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10 * freely, subject to the following restrictions:
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11 *
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12 * 1. The origin of this software must not be misrepresented; you must not
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13 * claim that you wrote the original software. If you use this software
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14 * in a product, an acknowledgment in the product documentation would be
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15 * appreciated but is not required.
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16 * 2. Altered source versions must be plainly marked as such, and must not be
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17 * misrepresented as being the original software.
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18 * 3. This notice may not be removed or altered from any source distribution.
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19 **/
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20
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21 #include "ImageData.h"
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22
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23 // STD
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24 #include <cstring>
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25 #include <iostream>
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26
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27 // LOVE
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28 #include "common/Exception.h"
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29 #include "common/math.h"
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30 #include "filesystem/File.h"
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31
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32 using love::thread::Lock;
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33
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34 static Mutex devilMutex;
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35
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36 namespace love
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37 {
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38 namespace image
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39 {
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40 namespace devil
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41 {
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42
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43 static inline void ilxClearErrors()
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44 {
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45 while (ilGetError() != IL_NO_ERROR);
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46 }
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47
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48 ImageData::ImageData(Data *data)
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49 {
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50 load(data);
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51 }
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52
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53 ImageData::ImageData(filesystem::File *file)
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54 {
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55 Data *data = file->read();
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56 load(data);
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57 data->release();
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58 }
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59
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60 ImageData::ImageData(int width, int height)
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61 {
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62 this->width = width;
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63 this->height = height;
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64 create(width, height);
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65
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66 // Set to black.
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67 memset(data, 0, width*height*4);
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68 }
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69
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70 ImageData::ImageData(int width, int height, void *data)
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71 {
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72 this->width = width;
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73 this->height = height;
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74 create(width, height, data);
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75 }
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76
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77 ImageData::~ImageData()
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78 {
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79 delete[] data;
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80 }
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81
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82 void ImageData::create(int width, int height, void *data)
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83 {
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84 try
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85 {
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86 this->data = new unsigned char[width*height*sizeof(pixel)];
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87 }
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88 catch(std::bad_alloc &)
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89 {
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90 throw love::Exception("Out of memory");
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91 }
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92
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93 if (data)
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94 memcpy(this->data, data, width*height*sizeof(pixel));
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95 }
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96
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97 void ImageData::load(Data *data)
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98 {
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99 Lock lock(devilMutex);
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100 ILuint image;
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101 ilGenImages(1, &image);
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102 ilBindImage(image);
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103
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104 try
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105 {
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106 bool success = IL_TRUE == ilLoadL(IL_TYPE_UNKNOWN, (void *)data->getData(), data->getSize());
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107
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108 if (!success)
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109 throw love::Exception("Could not decode image!");
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110
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111 width = ilGetInteger(IL_IMAGE_WIDTH);
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112 height = ilGetInteger(IL_IMAGE_HEIGHT);
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113
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114 // Make sure the image is in RGBA format.
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115 ilConvertImage(IL_RGBA, IL_UNSIGNED_BYTE);
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116
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117 // This should always be four.
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118 int bpp = ilGetInteger(IL_IMAGE_BPP);
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119 if (bpp != sizeof(pixel))
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120 throw love::Exception("Could not convert image!");
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121
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122 create(width, height, ilGetData());
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123 }
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124 catch(std::exception &)
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125 {
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126 ilDeleteImages(1, &image);
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127 throw;
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128 }
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129
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130 ilDeleteImages(1, &image);
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131 }
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132
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133 void ImageData::encode(love::filesystem::File *f, ImageData::Format format)
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134 {
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135 Lock lock1(devilMutex);
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136 Lock lock2(mutex);
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137
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138 ILuint tempimage;
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139 ilGenImages(1, &tempimage);
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140 ilBindImage(tempimage);
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141 ilxClearErrors();
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142
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143 ILubyte *encoded_data = NULL;
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144
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145 try
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146 {
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147 bool success = IL_TRUE == ilTexImage(width, height, 1, sizeof(pixel), IL_RGBA, IL_UNSIGNED_BYTE, this->data);
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148
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149 ILenum err = ilGetError();
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150 ilxClearErrors();
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151
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152 if (!success)
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153 {
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154 if (err != IL_NO_ERROR)
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155 {
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156 switch (err)
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157 {
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158 case IL_ILLEGAL_OPERATION:
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159 throw love::Exception("Illegal operation");
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160 case IL_INVALID_PARAM:
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161 throw love::Exception("Invalid parameters");
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162 case IL_OUT_OF_MEMORY:
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163 throw love::Exception("Out of memory");
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164 default:
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165 throw love::Exception("Unknown error (%d)", (int) err);
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166 }
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167 }
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168
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169 throw love::Exception("Could not create image for the encoding!");
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170 }
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171
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172 ilRegisterOrigin(IL_ORIGIN_UPPER_LEFT);
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173
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174 ILuint ilFormat;
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175 switch (format)
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176 {
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177 case ImageData::FORMAT_BMP:
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178 ilFormat = IL_BMP;
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179 break;
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180 case ImageData::FORMAT_TGA:
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181 ilFormat = IL_TGA;
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182 break;
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183 case ImageData::FORMAT_GIF:
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184 ilFormat = IL_GIF;
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185 break;
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186 case ImageData::FORMAT_JPG:
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187 ilFormat = IL_JPG;
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188 break;
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189 case ImageData::FORMAT_PNG:
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190 default: // PNG is the default format
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191 ilFormat = IL_PNG;
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192 break;
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193 }
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194
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195 ILuint size = ilSaveL(ilFormat, NULL, 0);
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196 if (!size)
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197 throw love::Exception("Could not encode image!");
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198
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199 try
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200 {
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201 encoded_data = new ILubyte[size];
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202 }
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203 catch(std::bad_alloc &)
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204 {
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205 throw love::Exception("Out of memory");
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206 }
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207
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208 ilSaveL(ilFormat, encoded_data, size);
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209
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210 f->open(love::filesystem::File::WRITE);
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211 f->write(encoded_data, size);
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212 f->close();
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213 }
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214 catch(std::exception &)
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215 {
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216 ilDeleteImages(1, &tempimage);
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217 delete[] encoded_data;
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218 throw;
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219 }
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220
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221 ilDeleteImages(1, &tempimage);
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222 delete[] encoded_data;
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223 }
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224
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225 } // devil
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226 } // image
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227 } // love
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