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