Mercurial > hg > orthanc
annotate Core/Images/JpegReader.cpp @ 2401:a051aba0037c
Use "GBK" (frequently used in China) as an alias for "GB18030"
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Sat, 02 Sep 2017 11:50:08 +0200 |
| parents | a3a65de1840f |
| children | 878b59270859 |
| 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 Osimis, Belgium |
| 1604 | 6 * |
| 7 * This program is free software: you can redistribute it and/or | |
| 8 * modify it under the terms of the GNU General Public License as | |
| 9 * published by the Free Software Foundation, either version 3 of the | |
| 10 * License, or (at your option) any later version. | |
| 11 * | |
| 12 * In addition, as a special exception, the copyright holders of this | |
| 13 * program give permission to link the code of its release with the | |
| 14 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 15 * that use the same license as the "OpenSSL" library), and distribute | |
| 16 * the linked executables. You must obey the GNU General Public License | |
| 17 * in all respects for all of the code used other than "OpenSSL". If you | |
| 18 * modify file(s) with this exception, you may extend this exception to | |
| 19 * your version of the file(s), but you are not obligated to do so. If | |
| 20 * you do not wish to do so, delete this exception statement from your | |
| 21 * version. If you delete this exception statement from all source files | |
| 22 * in the program, then also delete it here. | |
| 23 * | |
| 24 * This program is distributed in the hope that it will be useful, but | |
| 25 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 27 * General Public License for more details. | |
| 28 * | |
| 29 * You should have received a copy of the GNU General Public License | |
| 30 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 31 **/ | |
| 32 | |
| 33 | |
| 34 #include "../PrecompiledHeaders.h" | |
| 35 #include "JpegReader.h" | |
| 36 | |
| 37 #include "JpegErrorManager.h" | |
| 38 #include "../OrthancException.h" | |
| 39 #include "../Logging.h" | |
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40 |
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41 #if ORTHANC_SANDBOXED == 0 |
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42 # include "../SystemToolbox.h" |
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43 #endif |
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44 |
| 1604 | 45 |
| 46 namespace Orthanc | |
| 47 { | |
| 48 static void Uncompress(struct jpeg_decompress_struct& cinfo, | |
| 49 std::string& content, | |
| 50 ImageAccessor& accessor) | |
| 51 { | |
| 52 jpeg_read_header(&cinfo, TRUE); | |
| 53 jpeg_start_decompress(&cinfo); | |
| 54 | |
| 55 PixelFormat format; | |
| 56 if (cinfo.output_components == 1 && | |
| 57 cinfo.out_color_space == JCS_GRAYSCALE) | |
| 58 { | |
| 59 format = PixelFormat_Grayscale8; | |
| 60 } | |
| 61 else if (cinfo.output_components == 3 && | |
| 62 cinfo.out_color_space == JCS_RGB) | |
| 63 { | |
| 64 format = PixelFormat_RGB24; | |
| 65 } | |
| 66 else | |
| 67 { | |
| 68 throw OrthancException(ErrorCode_NotImplemented); | |
| 69 } | |
| 70 | |
| 71 unsigned int pitch = cinfo.output_width * cinfo.output_components; | |
| 72 | |
| 73 /* Make a one-row-high sample array that will go away when done with image */ | |
| 74 JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, pitch, 1); | |
| 75 | |
| 76 try | |
| 77 { | |
| 78 content.resize(pitch * cinfo.output_height); | |
| 79 } | |
| 80 catch (...) | |
| 81 { | |
| 82 throw OrthancException(ErrorCode_NotEnoughMemory); | |
| 83 } | |
| 84 | |
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85 accessor.AssignWritable(format, cinfo.output_width, cinfo.output_height, pitch, |
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86 content.empty() ? NULL : &content[0]); |
| 1604 | 87 |
| 88 uint8_t* target = reinterpret_cast<uint8_t*>(&content[0]); | |
| 89 while (cinfo.output_scanline < cinfo.output_height) | |
| 90 { | |
| 91 jpeg_read_scanlines(&cinfo, buffer, 1); | |
| 92 memcpy(target, buffer[0], pitch); | |
| 93 target += pitch; | |
| 94 } | |
| 95 | |
| 96 // Everything went fine, "setjmp()" didn't get called | |
| 97 | |
| 98 jpeg_finish_decompress(&cinfo); | |
| 99 } | |
| 100 | |
| 101 | |
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102 #if ORTHANC_SANDBOXED == 0 |
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103 void JpegReader::ReadFromFile(const std::string& filename) |
| 1604 | 104 { |
| 2140 | 105 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_ReadBinary); |
| 1604 | 106 if (!fp) |
| 107 { | |
| 108 throw OrthancException(ErrorCode_InexistentFile); | |
| 109 } | |
| 110 | |
| 111 struct jpeg_decompress_struct cinfo; | |
| 112 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 113 | |
| 114 Internals::JpegErrorManager jerr; | |
| 115 cinfo.err = jerr.GetPublic(); | |
| 116 | |
| 117 if (setjmp(jerr.GetJumpBuffer())) | |
| 118 { | |
| 119 jpeg_destroy_decompress(&cinfo); | |
| 120 fclose(fp); | |
| 2085 | 121 LOG(ERROR) << "Error during JPEG decoding: " << jerr.GetMessage(); |
| 1604 | 122 throw OrthancException(ErrorCode_InternalError); |
| 123 } | |
| 124 | |
| 125 // Below this line, we are under the scope of a "setjmp" | |
| 126 | |
| 127 jpeg_create_decompress(&cinfo); | |
| 128 jpeg_stdio_src(&cinfo, fp); | |
| 129 | |
| 130 try | |
| 131 { | |
| 132 Uncompress(cinfo, content_, *this); | |
| 133 } | |
| 134 catch (OrthancException&) | |
| 135 { | |
| 136 jpeg_destroy_decompress(&cinfo); | |
| 137 fclose(fp); | |
| 138 throw; | |
| 139 } | |
| 140 | |
| 141 jpeg_destroy_decompress(&cinfo); | |
| 142 fclose(fp); | |
| 143 } | |
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144 #endif |
| 1604 | 145 |
| 146 | |
| 147 void JpegReader::ReadFromMemory(const void* buffer, | |
| 148 size_t size) | |
| 149 { | |
| 150 struct jpeg_decompress_struct cinfo; | |
| 151 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct)); | |
| 152 | |
| 153 Internals::JpegErrorManager jerr; | |
| 154 cinfo.err = jerr.GetPublic(); | |
| 155 | |
| 156 if (setjmp(jerr.GetJumpBuffer())) | |
| 157 { | |
| 158 jpeg_destroy_decompress(&cinfo); | |
| 2085 | 159 LOG(ERROR) << "Error during JPEG decoding: " << jerr.GetMessage(); |
| 1604 | 160 throw OrthancException(ErrorCode_InternalError); |
| 161 } | |
| 162 | |
| 163 // Below this line, we are under the scope of a "setjmp" | |
| 164 jpeg_create_decompress(&cinfo); | |
| 165 jpeg_mem_src(&cinfo, const_cast<unsigned char*>(reinterpret_cast<const unsigned char*>(buffer)), size); | |
| 166 | |
| 167 try | |
| 168 { | |
| 169 Uncompress(cinfo, content_, *this); | |
| 170 } | |
| 171 catch (OrthancException&) | |
| 172 { | |
| 173 jpeg_destroy_decompress(&cinfo); | |
| 174 throw; | |
| 175 } | |
| 176 | |
| 177 jpeg_destroy_decompress(&cinfo); | |
| 178 } | |
| 179 | |
| 180 | |
| 181 void JpegReader::ReadFromMemory(const std::string& buffer) | |
| 182 { | |
| 183 if (buffer.empty()) | |
| 184 { | |
| 185 ReadFromMemory(NULL, 0); | |
| 186 } | |
| 187 else | |
| 188 { | |
| 189 ReadFromMemory(buffer.c_str(), buffer.size()); | |
| 190 } | |
| 191 } | |
| 192 } |