Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/JpegReader.cpp @ 5853:4d932683049d get-scu tip
very first implementation of C-Get SCU
| author | Alain Mazy <am@orthanc.team> |
|---|---|
| date | Tue, 29 Oct 2024 17:25:49 +0100 |
| parents | f7adfb22e20e |
| children |
| rev | line source |
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| 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) 2017-2023 Osimis S.A., Belgium |
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6 * Copyright (C) 2024-2024 Orthanc Team SRL, Belgium |
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7 * Copyright (C) 2021-2024 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 1604 | 8 * |
| 9 * This program is free software: you can redistribute it and/or | |
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10 * modify it under the terms of the GNU Lesser General Public License |
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11 * as published by the Free Software Foundation, either version 3 of |
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12 * the License, or (at your option) any later version. |
| 1604 | 13 * |
| 14 * This program is distributed in the hope that it will be useful, but | |
| 15 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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17 * Lesser General Public License for more details. |
| 1604 | 18 * |
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19 * You should have received a copy of the GNU Lesser General Public |
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20 * License along with this program. If not, see |
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21 * <http://www.gnu.org/licenses/>. |
| 1604 | 22 **/ |
| 23 | |
| 24 | |
| 25 #include "../PrecompiledHeaders.h" | |
| 26 #include "JpegReader.h" | |
| 27 | |
| 28 #include "JpegErrorManager.h" | |
| 29 #include "../OrthancException.h" | |
| 30 #include "../Logging.h" | |
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31 |
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32 #if ORTHANC_SANDBOXED == 0 |
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33 # include "../SystemToolbox.h" |
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34 #endif |
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35 |
| 1604 | 36 |
| 37 namespace Orthanc | |
| 38 { | |
| 39 static void Uncompress(struct jpeg_decompress_struct& cinfo, | |
| 40 std::string& content, | |
| 41 ImageAccessor& accessor) | |
| 42 { | |
| 2683 | 43 // The "static_cast" is necessary on OS X: |
| 44 // https://github.com/simonfuhrmann/mve/issues/371 | |
| 45 jpeg_read_header(&cinfo, static_cast<boolean>(true)); | |
| 46 | |
| 1604 | 47 jpeg_start_decompress(&cinfo); |
| 48 | |
| 49 PixelFormat format; | |
| 50 if (cinfo.output_components == 1 && | |
| 51 cinfo.out_color_space == JCS_GRAYSCALE) | |
| 52 { | |
| 53 format = PixelFormat_Grayscale8; | |
| 54 } | |
| 55 else if (cinfo.output_components == 3 && | |
| 56 cinfo.out_color_space == JCS_RGB) | |
| 57 { | |
| 58 format = PixelFormat_RGB24; | |
| 59 } | |
| 60 else | |
| 61 { | |
| 62 throw OrthancException(ErrorCode_NotImplemented); | |
| 63 } | |
| 64 | |
| 65 unsigned int pitch = cinfo.output_width * cinfo.output_components; | |
| 66 | |
| 67 /* Make a one-row-high sample array that will go away when done with image */ | |
| 68 JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, pitch, 1); | |
| 69 | |
| 70 try | |
| 71 { | |
| 72 content.resize(pitch * cinfo.output_height); | |
| 73 } | |
| 74 catch (...) | |
| 75 { | |
| 76 throw OrthancException(ErrorCode_NotEnoughMemory); | |
| 77 } | |
| 78 | |
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79 accessor.AssignWritable(format, cinfo.output_width, cinfo.output_height, pitch, |
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80 content.empty() ? NULL : &content[0]); |
| 1604 | 81 |
| 82 uint8_t* target = reinterpret_cast<uint8_t*>(&content[0]); | |
| 83 while (cinfo.output_scanline < cinfo.output_height) | |
| 84 { | |
| 85 jpeg_read_scanlines(&cinfo, buffer, 1); | |
| 86 memcpy(target, buffer[0], pitch); | |
| 87 target += pitch; | |
| 88 } | |
| 89 | |
| 90 // Everything went fine, "setjmp()" didn't get called | |
| 91 | |
| 92 jpeg_finish_decompress(&cinfo); | |
| 93 } | |
| 94 | |
| 95 | |
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96 #if ORTHANC_SANDBOXED == 0 |
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97 void JpegReader::ReadFromFile(const std::string& filename) |
| 1604 | 98 { |
| 2140 | 99 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_ReadBinary); |
| 1604 | 100 if (!fp) |
| 101 { | |
| 102 throw OrthancException(ErrorCode_InexistentFile); | |
| 103 } | |
| 104 | |
| 105 struct jpeg_decompress_struct cinfo; | |
| 106 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 107 | |
| 108 Internals::JpegErrorManager jerr; | |
| 109 cinfo.err = jerr.GetPublic(); | |
| 110 | |
| 111 if (setjmp(jerr.GetJumpBuffer())) | |
| 112 { | |
| 113 jpeg_destroy_decompress(&cinfo); | |
| 114 fclose(fp); | |
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115 |
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116 throw OrthancException(ErrorCode_InternalError, |
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117 "Error during JPEG decoding: " + jerr.GetMessage()); |
| 1604 | 118 } |
| 119 | |
| 120 // Below this line, we are under the scope of a "setjmp" | |
| 121 | |
| 122 jpeg_create_decompress(&cinfo); | |
| 123 jpeg_stdio_src(&cinfo, fp); | |
| 124 | |
| 125 try | |
| 126 { | |
| 127 Uncompress(cinfo, content_, *this); | |
| 128 } | |
| 129 catch (OrthancException&) | |
| 130 { | |
| 131 jpeg_destroy_decompress(&cinfo); | |
| 132 fclose(fp); | |
| 133 throw; | |
| 134 } | |
| 135 | |
| 136 jpeg_destroy_decompress(&cinfo); | |
| 137 fclose(fp); | |
| 138 } | |
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139 #endif |
| 1604 | 140 |
| 141 | |
| 142 void JpegReader::ReadFromMemory(const void* buffer, | |
| 143 size_t size) | |
| 144 { | |
| 145 struct jpeg_decompress_struct cinfo; | |
| 146 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 147 | |
| 148 Internals::JpegErrorManager jerr; | |
| 149 cinfo.err = jerr.GetPublic(); | |
| 150 | |
| 151 if (setjmp(jerr.GetJumpBuffer())) | |
| 152 { | |
| 153 jpeg_destroy_decompress(&cinfo); | |
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154 throw OrthancException(ErrorCode_InternalError, |
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155 "Error during JPEG decoding: " + jerr.GetMessage()); |
| 1604 | 156 } |
| 157 | |
| 158 // Below this line, we are under the scope of a "setjmp" | |
| 159 jpeg_create_decompress(&cinfo); | |
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160 jpeg_mem_src(&cinfo, |
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161 const_cast<unsigned char*>( |
| 5512 | 162 reinterpret_cast<const unsigned char*>(buffer)), size); |
| 1604 | 163 |
| 164 try | |
| 165 { | |
| 166 Uncompress(cinfo, content_, *this); | |
| 167 } | |
| 168 catch (OrthancException&) | |
| 169 { | |
| 170 jpeg_destroy_decompress(&cinfo); | |
| 171 throw; | |
| 172 } | |
| 173 | |
| 174 jpeg_destroy_decompress(&cinfo); | |
| 175 } | |
| 176 | |
| 177 | |
| 178 void JpegReader::ReadFromMemory(const std::string& buffer) | |
| 179 { | |
| 180 if (buffer.empty()) | |
| 181 { | |
| 182 ReadFromMemory(NULL, 0); | |
| 183 } | |
| 184 else | |
| 185 { | |
| 186 ReadFromMemory(buffer.c_str(), buffer.size()); | |
| 187 } | |
| 188 } | |
| 189 } |