Mercurial > hg > orthanc-stone
annotate Resources/Orthanc/Core/Images/JpegWriter.cpp @ 208:db70f6c5fa4f
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author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 11 Apr 2018 16:27:09 +0200 |
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rev | line source |
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1 /** |
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2 * Orthanc - A Lightweight, RESTful DICOM Store |
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3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
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4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2018 Osimis S.A., Belgium |
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6 * |
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7 * This program is free software: you can redistribute it and/or |
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8 * modify it under the terms of the GNU General Public License as |
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9 * published by the Free Software Foundation, either version 3 of the |
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10 * License, or (at your option) any later version. |
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11 * |
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12 * In addition, as a special exception, the copyright holders of this |
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13 * program give permission to link the code of its release with the |
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14 * OpenSSL project's "OpenSSL" library (or with modified versions of it |
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15 * that use the same license as the "OpenSSL" library), and distribute |
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16 * the linked executables. You must obey the GNU General Public License |
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17 * in all respects for all of the code used other than "OpenSSL". If you |
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18 * modify file(s) with this exception, you may extend this exception to |
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19 * your version of the file(s), but you are not obligated to do so. If |
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20 * you do not wish to do so, delete this exception statement from your |
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21 * version. If you delete this exception statement from all source files |
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22 * in the program, then also delete it here. |
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23 * |
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24 * This program is distributed in the hope that it will be useful, but |
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25 * WITHOUT ANY WARRANTY; without even the implied warranty of |
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26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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27 * General Public License for more details. |
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28 * |
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29 * You should have received a copy of the GNU General Public License |
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30 * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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31 **/ |
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32 |
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33 |
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34 #include "../PrecompiledHeaders.h" |
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35 #include "JpegWriter.h" |
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36 |
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37 #include "../OrthancException.h" |
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38 #include "../Logging.h" |
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39 #include "JpegErrorManager.h" |
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40 |
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41 #if ORTHANC_SANDBOXED == 0 |
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42 # include "../SystemToolbox.h" |
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43 #endif |
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44 |
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45 #include <stdlib.h> |
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46 #include <vector> |
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47 |
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48 namespace Orthanc |
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49 { |
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50 static void GetLines(std::vector<uint8_t*>& lines, |
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51 unsigned int height, |
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52 unsigned int pitch, |
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53 PixelFormat format, |
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54 const void* buffer) |
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55 { |
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56 if (format != PixelFormat_Grayscale8 && |
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57 format != PixelFormat_RGB24) |
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58 { |
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59 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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60 } |
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61 |
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62 lines.resize(height); |
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63 |
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64 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); |
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65 for (unsigned int y = 0; y < height; y++) |
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66 { |
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67 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); |
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68 } |
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69 } |
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70 |
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71 |
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72 static void Compress(struct jpeg_compress_struct& cinfo, |
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73 std::vector<uint8_t*>& lines, |
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74 unsigned int width, |
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75 unsigned int height, |
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76 PixelFormat format, |
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77 uint8_t quality) |
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78 { |
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79 cinfo.image_width = width; |
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80 cinfo.image_height = height; |
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81 |
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82 switch (format) |
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83 { |
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84 case PixelFormat_Grayscale8: |
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85 cinfo.input_components = 1; |
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86 cinfo.in_color_space = JCS_GRAYSCALE; |
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87 break; |
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88 |
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89 case PixelFormat_RGB24: |
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90 cinfo.input_components = 3; |
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91 cinfo.in_color_space = JCS_RGB; |
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92 break; |
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93 |
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94 default: |
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95 throw OrthancException(ErrorCode_InternalError); |
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96 } |
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97 |
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98 jpeg_set_defaults(&cinfo); |
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99 jpeg_set_quality(&cinfo, quality, TRUE); |
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100 jpeg_start_compress(&cinfo, TRUE); |
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101 jpeg_write_scanlines(&cinfo, &lines[0], height); |
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102 jpeg_finish_compress(&cinfo); |
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103 jpeg_destroy_compress(&cinfo); |
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104 } |
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105 |
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106 |
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107 void JpegWriter::SetQuality(uint8_t quality) |
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108 { |
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109 if (quality == 0 || quality > 100) |
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110 { |
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111 throw OrthancException(ErrorCode_ParameterOutOfRange); |
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112 } |
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113 |
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114 quality_ = quality; |
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115 } |
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116 |
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117 |
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118 #if ORTHANC_SANDBOXED == 0 |
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119 void JpegWriter::WriteToFileInternal(const std::string& filename, |
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120 unsigned int width, |
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121 unsigned int height, |
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122 unsigned int pitch, |
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123 PixelFormat format, |
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124 const void* buffer) |
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125 { |
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126 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
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127 if (fp == NULL) |
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128 { |
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129 throw OrthancException(ErrorCode_CannotWriteFile); |
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130 } |
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131 |
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132 std::vector<uint8_t*> lines; |
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133 GetLines(lines, height, pitch, format, buffer); |
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134 |
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135 struct jpeg_compress_struct cinfo; |
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136 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); |
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137 |
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138 Internals::JpegErrorManager jerr; |
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139 cinfo.err = jerr.GetPublic(); |
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140 |
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141 if (setjmp(jerr.GetJumpBuffer())) |
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142 { |
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143 /* If we get here, the JPEG code has signaled an error. |
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144 * We need to clean up the JPEG object, close the input file, and return. |
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145 */ |
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146 jpeg_destroy_compress(&cinfo); |
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147 fclose(fp); |
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148 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); |
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149 throw OrthancException(ErrorCode_InternalError); |
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150 } |
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151 |
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152 // Do not allocate data on the stack below this line! |
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153 |
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154 jpeg_create_compress(&cinfo); |
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155 jpeg_stdio_dest(&cinfo, fp); |
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156 Compress(cinfo, lines, width, height, format, quality_); |
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157 |
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158 // Everything went fine, "setjmp()" didn't get called |
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159 |
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160 fclose(fp); |
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161 } |
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162 #endif |
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163 |
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164 |
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165 #if ORTHANC_SANDBOXED == 0 |
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166 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
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167 unsigned int width, |
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168 unsigned int height, |
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169 unsigned int pitch, |
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170 PixelFormat format, |
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171 const void* buffer) |
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172 { |
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173 std::vector<uint8_t*> lines; |
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174 GetLines(lines, height, pitch, format, buffer); |
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175 |
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176 struct jpeg_compress_struct cinfo; |
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177 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); |
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178 |
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179 Internals::JpegErrorManager jerr; |
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180 |
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181 unsigned char* data = NULL; |
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182 unsigned long size; |
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183 |
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184 if (setjmp(jerr.GetJumpBuffer())) |
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185 { |
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186 jpeg_destroy_compress(&cinfo); |
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187 |
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188 if (data != NULL) |
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189 { |
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190 free(data); |
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191 } |
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192 |
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193 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); |
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194 throw OrthancException(ErrorCode_InternalError); |
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195 } |
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196 |
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197 // Do not allocate data on the stack below this line! |
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198 |
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199 jpeg_create_compress(&cinfo); |
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200 cinfo.err = jerr.GetPublic(); |
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201 jpeg_mem_dest(&cinfo, &data, &size); |
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202 |
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203 Compress(cinfo, lines, width, height, format, quality_); |
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204 |
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205 // Everything went fine, "setjmp()" didn't get called |
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206 |
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207 jpeg.assign(reinterpret_cast<const char*>(data), size); |
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208 free(data); |
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209 } |
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210 #endif |
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211 } |