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annotate Resources/Orthanc/Core/Images/PngReader.cpp @ 200:03afbee0cc7b

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integration of Orthanc core into Stone
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 23 Mar 2018 11:04:03 +0100
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200
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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 "PngReader.h"
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36
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37 #include "../OrthancException.h"
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38 #include "../Toolbox.h"
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39
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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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43
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44 #include <png.h>
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45 #include <string.h> // For memcpy()
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46
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47 namespace Orthanc
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48 {
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49 #if ORTHANC_SANDBOXED == 0
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50 namespace
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51 {
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52 struct FileRabi
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53 {
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54 FILE* fp_;
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55
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56 FileRabi(const char* filename)
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57 {
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58 fp_ = SystemToolbox::OpenFile(filename, FileMode_ReadBinary);
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59 if (!fp_)
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60 {
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61 throw OrthancException(ErrorCode_InexistentFile);
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62 }
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63 }
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64
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65 ~FileRabi()
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66 {
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67 if (fp_)
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68 {
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69 fclose(fp_);
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70 }
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71 }
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72 };
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73 }
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74 #endif
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75
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76
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77 struct PngReader::PngRabi
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78 {
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79 png_structp png_;
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80 png_infop info_;
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81 png_infop endInfo_;
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82
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83 void Destruct()
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84 {
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85 if (png_)
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86 {
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87 png_destroy_read_struct(&png_, &info_, &endInfo_);
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88
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89 png_ = NULL;
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90 info_ = NULL;
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91 endInfo_ = NULL;
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92 }
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93 }
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94
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95 PngRabi()
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96 {
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97 png_ = NULL;
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98 info_ = NULL;
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99 endInfo_ = NULL;
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100
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101 png_ = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
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102 if (!png_)
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103 {
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104 throw OrthancException(ErrorCode_NotEnoughMemory);
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105 }
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106
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107 info_ = png_create_info_struct(png_);
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108 if (!info_)
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109 {
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110 png_destroy_read_struct(&png_, NULL, NULL);
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111 throw OrthancException(ErrorCode_NotEnoughMemory);
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112 }
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113
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114 endInfo_ = png_create_info_struct(png_);
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115 if (!info_)
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116 {
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117 png_destroy_read_struct(&png_, &info_, NULL);
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118 throw OrthancException(ErrorCode_NotEnoughMemory);
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119 }
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120 }
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121
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122 ~PngRabi()
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123 {
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124 Destruct();
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125 }
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126
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127 static void MemoryCallback(png_structp png_ptr,
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128 png_bytep data,
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129 png_size_t size);
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130 };
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131
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132
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133 void PngReader::CheckHeader(const void* header)
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134 {
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135 int is_png = !png_sig_cmp((png_bytep) header, 0, 8);
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136 if (!is_png)
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137 {
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138 throw OrthancException(ErrorCode_BadFileFormat);
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139 }
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140 }
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141
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142 PngReader::PngReader()
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143 {
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144 }
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diff changeset
145
03afbee0cc7b integration of Orthanc core into Stone
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146 void PngReader::Read(PngRabi& rabi)
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147 {
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148 png_set_sig_bytes(rabi.png_, 8);
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149
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diff changeset
150 png_read_info(rabi.png_, rabi.info_);
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diff changeset
151
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diff changeset
152 png_uint_32 width, height;
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diff changeset
153 int bit_depth, color_type, interlace_type;
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diff changeset
154 int compression_type, filter_method;
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diff changeset
155 // get size and bit-depth of the PNG-image
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diff changeset
156 png_get_IHDR(rabi.png_, rabi.info_,
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157 &width, &height,
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158 &bit_depth, &color_type, &interlace_type,
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diff changeset
159 &compression_type, &filter_method);
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diff changeset
160
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161 PixelFormat format;
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diff changeset
162 unsigned int pitch;
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163
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164 if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth == 8)
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165 {
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166 format = PixelFormat_Grayscale8;
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167 pitch = width;
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168 }
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169 else if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth == 16)
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170 {
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171 format = PixelFormat_Grayscale16;
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172 pitch = 2 * width;
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173
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174 if (Toolbox::DetectEndianness() == Endianness_Little)
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175 {
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176 png_set_swap(rabi.png_);
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177 }
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178 }
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179 else if (color_type == PNG_COLOR_TYPE_RGB && bit_depth == 8)
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180 {
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181 format = PixelFormat_RGB24;
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182 pitch = 3 * width;
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183 }
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184 else if (color_type == PNG_COLOR_TYPE_RGBA && bit_depth == 8)
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diff changeset
185 {
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186 format = PixelFormat_RGBA32;
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187 pitch = 4 * width;
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188 }
03afbee0cc7b integration of Orthanc core into Stone
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189 else
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diff changeset
190 {
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191 throw OrthancException(ErrorCode_NotImplemented);
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diff changeset
192 }
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193
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
194 data_.resize(height * pitch);
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diff changeset
195
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
196 if (height == 0 || width == 0)
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diff changeset
197 {
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198 // Empty image, we are done
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199 AssignEmpty(format);
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diff changeset
200 return;
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diff changeset
201 }
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diff changeset
202
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
203 png_read_update_info(rabi.png_, rabi.info_);
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diff changeset
204
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
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diff changeset
205 std::vector<png_bytep> rows(height);
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diff changeset
206 for (size_t i = 0; i < height; i++)
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diff changeset
207 {
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
208 rows[i] = &data_[0] + i * pitch;
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diff changeset
209 }
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
210
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
211 png_read_image(rabi.png_, &rows[0]);
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diff changeset
212
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
213 AssignWritable(format, width, height, pitch, &data_[0]);
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diff changeset
214 }
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
215
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
216
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
217 #if ORTHANC_SANDBOXED == 0
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parents:
diff changeset
218 void PngReader::ReadFromFile(const std::string& filename)
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parents:
diff changeset
219 {
03afbee0cc7b integration of Orthanc core into Stone
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diff changeset
220 FileRabi f(filename.c_str());
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
221
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
222 char header[8];
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
223 if (fread(header, 1, 8, f.fp_) != 8)
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
224 {
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
225 throw OrthancException(ErrorCode_BadFileFormat);
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
226 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
227
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
228 CheckHeader(header);
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
229
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
230 PngRabi rabi;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
231
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
232 if (setjmp(png_jmpbuf(rabi.png_)))
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
233 {
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
234 rabi.Destruct();
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
235 throw OrthancException(ErrorCode_BadFileFormat);
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
236 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
237
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
238 png_init_io(rabi.png_, f.fp_);
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
239
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
240 Read(rabi);
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
241 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
242 #endif
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
243
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
244
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
245 namespace
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
246 {
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
247 struct MemoryBuffer
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
248 {
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
249 const uint8_t* buffer_;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
250 size_t size_;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
251 size_t pos_;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
252 bool ok_;
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
253 };
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
254 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
255
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
256
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
257 void PngReader::PngRabi::MemoryCallback(png_structp png_ptr,
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
258 png_bytep outBytes,
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
259 png_size_t byteCountToRead)
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
260 {
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
261 MemoryBuffer* from = reinterpret_cast<MemoryBuffer*>(png_get_io_ptr(png_ptr));
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
262
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
263 if (!from->ok_)
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
264 {
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
265 return;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
266 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
267
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
268 if (from->pos_ + byteCountToRead > from->size_)
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
269 {
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
270 from->ok_ = false;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
271 return;
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
272 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
273
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
274 memcpy(outBytes, from->buffer_ + from->pos_, byteCountToRead);
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
275
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
276 from->pos_ += byteCountToRead;
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
277 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
278
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
279
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
280 void PngReader::ReadFromMemory(const void* buffer,
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
281 size_t size)
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
282 {
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
283 if (size < 8)
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
284 {
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
285 throw OrthancException(ErrorCode_BadFileFormat);
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
286 }
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
287
03afbee0cc7b integration of Orthanc core into Stone
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff changeset
288 CheckHeader(buffer);
03afbee0cc7b integration of Orthanc core into Stone
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parents:
diff changeset
289
03afbee0cc7b integration of Orthanc core into Stone
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290 PngRabi rabi;
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291
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292 if (setjmp(png_jmpbuf(rabi.png_)))
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293 {
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294 rabi.Destruct();
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295 throw OrthancException(ErrorCode_BadFileFormat);
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296 }
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297
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298 MemoryBuffer tmp;
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299 tmp.buffer_ = reinterpret_cast<const uint8_t*>(buffer) + 8; // We skip the header
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300 tmp.size_ = size - 8;
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301 tmp.pos_ = 0;
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302 tmp.ok_ = true;
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303
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304 png_set_read_fn(rabi.png_, &tmp, PngRabi::MemoryCallback);
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305
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306 Read(rabi);
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307
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308 if (!tmp.ok_)
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309 {
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310 throw OrthancException(ErrorCode_BadFileFormat);
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311 }
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312 }
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313
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314 void PngReader::ReadFromMemory(const std::string& buffer)
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315 {
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316 if (buffer.size() != 0)
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317 {
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318 ReadFromMemory(&buffer[0], buffer.size());
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319 }
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320 else
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321 {
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322 ReadFromMemory(NULL, 0);
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323 }
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324 }
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325 }