Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/JpegReader.cpp @ 4119:bf7b9edf6b81 framework-lgpl
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 07 Jul 2020 19:17:56 +0200 |
| parents | d25f4c0fa160 |
| children | d9473bd5ed43 |
| rev | line source |
|---|---|
| 1604 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 1604 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2020 Osimis S.A., Belgium |
| 1604 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
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4119
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re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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8 * modify it under the terms of the GNU Lesser General Public License |
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bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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9 * as published by the Free Software Foundation, either version 3 of |
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bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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10 * the License, or (at your option) any later version. |
| 1604 | 11 * |
| 12 * This program is distributed in the hope that it will be useful, but | |
| 13 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
4119
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
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15 * Lesser General Public License for more details. |
| 1604 | 16 * |
|
4119
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re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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17 * You should have received a copy of the GNU Lesser General Public |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
4044
diff
changeset
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18 * License along with this program. If not, see |
|
bf7b9edf6b81
re-licensing the OrthancFramework to LGPL, in order to license Stone of Orthanc under LGPL
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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19 * <http://www.gnu.org/licenses/>. |
| 1604 | 20 **/ |
| 21 | |
| 22 | |
| 23 #include "../PrecompiledHeaders.h" | |
| 24 #include "JpegReader.h" | |
| 25 | |
| 26 #include "JpegErrorManager.h" | |
| 27 #include "../OrthancException.h" | |
| 28 #include "../Logging.h" | |
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29 |
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30 #if ORTHANC_SANDBOXED == 0 |
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31 # include "../SystemToolbox.h" |
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32 #endif |
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33 |
| 1604 | 34 |
| 35 namespace Orthanc | |
| 36 { | |
| 37 static void Uncompress(struct jpeg_decompress_struct& cinfo, | |
| 38 std::string& content, | |
| 39 ImageAccessor& accessor) | |
| 40 { | |
| 2683 | 41 // The "static_cast" is necessary on OS X: |
| 42 // https://github.com/simonfuhrmann/mve/issues/371 | |
| 43 jpeg_read_header(&cinfo, static_cast<boolean>(true)); | |
| 44 | |
| 1604 | 45 jpeg_start_decompress(&cinfo); |
| 46 | |
| 47 PixelFormat format; | |
| 48 if (cinfo.output_components == 1 && | |
| 49 cinfo.out_color_space == JCS_GRAYSCALE) | |
| 50 { | |
| 51 format = PixelFormat_Grayscale8; | |
| 52 } | |
| 53 else if (cinfo.output_components == 3 && | |
| 54 cinfo.out_color_space == JCS_RGB) | |
| 55 { | |
| 56 format = PixelFormat_RGB24; | |
| 57 } | |
| 58 else | |
| 59 { | |
| 60 throw OrthancException(ErrorCode_NotImplemented); | |
| 61 } | |
| 62 | |
| 63 unsigned int pitch = cinfo.output_width * cinfo.output_components; | |
| 64 | |
| 65 /* Make a one-row-high sample array that will go away when done with image */ | |
| 66 JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, pitch, 1); | |
| 67 | |
| 68 try | |
| 69 { | |
| 70 content.resize(pitch * cinfo.output_height); | |
| 71 } | |
| 72 catch (...) | |
| 73 { | |
| 74 throw OrthancException(ErrorCode_NotEnoughMemory); | |
| 75 } | |
| 76 | |
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77 accessor.AssignWritable(format, cinfo.output_width, cinfo.output_height, pitch, |
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78 content.empty() ? NULL : &content[0]); |
| 1604 | 79 |
| 80 uint8_t* target = reinterpret_cast<uint8_t*>(&content[0]); | |
| 81 while (cinfo.output_scanline < cinfo.output_height) | |
| 82 { | |
| 83 jpeg_read_scanlines(&cinfo, buffer, 1); | |
| 84 memcpy(target, buffer[0], pitch); | |
| 85 target += pitch; | |
| 86 } | |
| 87 | |
| 88 // Everything went fine, "setjmp()" didn't get called | |
| 89 | |
| 90 jpeg_finish_decompress(&cinfo); | |
| 91 } | |
| 92 | |
| 93 | |
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94 #if ORTHANC_SANDBOXED == 0 |
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95 void JpegReader::ReadFromFile(const std::string& filename) |
| 1604 | 96 { |
| 2140 | 97 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_ReadBinary); |
| 1604 | 98 if (!fp) |
| 99 { | |
| 100 throw OrthancException(ErrorCode_InexistentFile); | |
| 101 } | |
| 102 | |
| 103 struct jpeg_decompress_struct cinfo; | |
| 104 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 105 | |
| 106 Internals::JpegErrorManager jerr; | |
| 107 cinfo.err = jerr.GetPublic(); | |
| 108 | |
| 109 if (setjmp(jerr.GetJumpBuffer())) | |
| 110 { | |
| 111 jpeg_destroy_decompress(&cinfo); | |
| 112 fclose(fp); | |
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113 |
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114 throw OrthancException(ErrorCode_InternalError, |
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115 "Error during JPEG decoding: " + jerr.GetMessage()); |
| 1604 | 116 } |
| 117 | |
| 118 // Below this line, we are under the scope of a "setjmp" | |
| 119 | |
| 120 jpeg_create_decompress(&cinfo); | |
| 121 jpeg_stdio_src(&cinfo, fp); | |
| 122 | |
| 123 try | |
| 124 { | |
| 125 Uncompress(cinfo, content_, *this); | |
| 126 } | |
| 127 catch (OrthancException&) | |
| 128 { | |
| 129 jpeg_destroy_decompress(&cinfo); | |
| 130 fclose(fp); | |
| 131 throw; | |
| 132 } | |
| 133 | |
| 134 jpeg_destroy_decompress(&cinfo); | |
| 135 fclose(fp); | |
| 136 } | |
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137 #endif |
| 1604 | 138 |
| 139 | |
| 140 void JpegReader::ReadFromMemory(const void* buffer, | |
| 141 size_t size) | |
| 142 { | |
| 143 struct jpeg_decompress_struct cinfo; | |
| 144 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 145 | |
| 146 Internals::JpegErrorManager jerr; | |
| 147 cinfo.err = jerr.GetPublic(); | |
| 148 | |
| 149 if (setjmp(jerr.GetJumpBuffer())) | |
| 150 { | |
| 151 jpeg_destroy_decompress(&cinfo); | |
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152 throw OrthancException(ErrorCode_InternalError, |
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153 "Error during JPEG decoding: " + jerr.GetMessage()); |
| 1604 | 154 } |
| 155 | |
| 156 // Below this line, we are under the scope of a "setjmp" | |
| 157 jpeg_create_decompress(&cinfo); | |
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158 jpeg_mem_src(&cinfo, |
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159 const_cast<unsigned char*>( |
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160 reinterpret_cast<const unsigned char*>(buffer)), |
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161 static_cast<unsigned long>(size)); |
| 1604 | 162 |
| 163 try | |
| 164 { | |
| 165 Uncompress(cinfo, content_, *this); | |
| 166 } | |
| 167 catch (OrthancException&) | |
| 168 { | |
| 169 jpeg_destroy_decompress(&cinfo); | |
| 170 throw; | |
| 171 } | |
| 172 | |
| 173 jpeg_destroy_decompress(&cinfo); | |
| 174 } | |
| 175 | |
| 176 | |
| 177 void JpegReader::ReadFromMemory(const std::string& buffer) | |
| 178 { | |
| 179 if (buffer.empty()) | |
| 180 { | |
| 181 ReadFromMemory(NULL, 0); | |
| 182 } | |
| 183 else | |
| 184 { | |
| 185 ReadFromMemory(buffer.c_str(), buffer.size()); | |
| 186 } | |
| 187 } | |
| 188 } |