Mercurial > hg > orthanc

annotate Core/Images/PamWriter.cpp @ 2703:f77c7b48f798

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fix
author Sebastien Jodogne <s.jodogne@gmail.com>
date Thu, 05 Jul 2018 21:02:50 +0200
parents 52217dc47a4e
children 5c18a22cb981
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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 "PamWriter.h"
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36
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37 #include "../ChunkedBuffer.h"
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38 #include "../Endianness.h"
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39 #include "../OrthancException.h"
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40 #include "../Toolbox.h"
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41
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42 #include <vector>
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43 #include <stdint.h>
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44 #include <iostream>
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45 #include <sstream>
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46 #include <fstream>
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47
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48 #if ORTHANC_SANDBOXED == 0
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49 # include "../SystemToolbox.h"
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50 #endif
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51
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52
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53 namespace Orthanc
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54 {
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55 namespace
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56 {
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57 void GetPixelFormatInfo(const PixelFormat& format, unsigned int& maxValue, unsigned int& channelCount, unsigned int& bytesPerChannel, const char*& tupleType) {
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58 maxValue = 255;
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59 channelCount = 1;
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60 bytesPerChannel = 1;
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61 tupleType = NULL;
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62
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63 switch (format) {
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64 case PixelFormat_Grayscale8:
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65 maxValue = 255;
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66 channelCount = 1;
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67 bytesPerChannel = 1;
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68 tupleType = "GRAYSCALE";
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69 break;
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70 case PixelFormat_Grayscale16:
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71 maxValue = 65535;
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72 channelCount = 1;
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73 bytesPerChannel = 2;
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74 tupleType = "GRAYSCALE";
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75 break;
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76 case PixelFormat_RGB24:
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77 maxValue = 255;
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78 channelCount = 3;
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79 bytesPerChannel = 1;
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80 tupleType = "RGB";
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81 break;
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82 case PixelFormat_RGB48:
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83 maxValue = 255;
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84 channelCount = 3;
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85 bytesPerChannel = 2;
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86 tupleType = "RGB";
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87 break;
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88 default:
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89 throw OrthancException(ErrorCode_NotImplemented);
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90 }
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91
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92 }
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93
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94 void WriteToStream(std::ostream& output,
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95 unsigned int width,
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96 unsigned int height,
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97 unsigned int pitch,
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98 PixelFormat format,
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99 const void* buffer)
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100 {
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101 unsigned int maxValue = 255;
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102 unsigned int channelCount = 1;
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103 unsigned int bytesPerChannel = 1;
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104 const char* tupleType = "GRAYSCALE";
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105 GetPixelFormatInfo(format, maxValue, channelCount, bytesPerChannel, tupleType);
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106
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107 output << "P7" << "\n";
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108 output << "WIDTH " << width << "\n";
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109 output << "HEIGHT " << height << "\n";
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110 output << "DEPTH " << channelCount << "\n";
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111 output << "MAXVAL " << maxValue << "\n";
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112 output << "TUPLTYPE " << tupleType << "\n";
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113 output << "ENDHDR" << "\n";
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114
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115 if (Toolbox::DetectEndianness() == Endianness_Little && bytesPerChannel == 2)
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116 {
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117 uint16_t tmp;
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118 const uint16_t* pixel = NULL;
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119 for (unsigned int h = 0; h < height; ++h)
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120 {
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121 pixel = reinterpret_cast<const uint16_t*> (reinterpret_cast<const uint8_t*>(buffer) + h * pitch);
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122 for (unsigned int w = 0; w < (width * channelCount); ++w, ++pixel)
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123 {
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124 tmp = htobe16(*pixel);
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125 output.write(reinterpret_cast<const char*>(&tmp), 2);
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126 }
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127 }
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128 }
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129 else
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130 {
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131 for (unsigned int h = 0; h < height; ++h)
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132 {
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133 output.write(reinterpret_cast<const char*>(reinterpret_cast<const uint8_t*>(buffer) + h * pitch), channelCount * bytesPerChannel * width);
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134 }
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135 }
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136
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137 }
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138
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139 }
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140
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141 #if ORTHANC_SANDBOXED == 0
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142 void PamWriter::WriteToFileInternal(const std::string& filename,
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143 unsigned int width,
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144 unsigned int height,
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145 unsigned int pitch,
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146 PixelFormat format,
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147 const void* buffer)
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148 {
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149 std::ofstream outfile (filename, std::ofstream::binary);
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150
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151 WriteToStream(outfile, width, height, pitch, format, buffer);
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152 outfile.close();
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153 }
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154 #endif
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155
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156
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157 void PamWriter::WriteToMemoryInternal(std::string& output,
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158 unsigned int width,
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159 unsigned int height,
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160 unsigned int pitch,
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161 PixelFormat format,
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162 const void* buffer)
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163 {
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164 std::ostringstream outStream; // todo: try to write directly in output and avoid copy
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165
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166 WriteToStream(outStream, width, height, pitch, format, buffer);
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167 output = outStream.str();
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168 }
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169 }