Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/JpegWriter.cpp @ 4831:7053502fbf97
added copyright UCLouvain
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Thu, 25 Nov 2021 19:01:11 +0100 |
| parents | d9473bd5ed43 |
| children | 43e613a7756b |
| rev | line source |
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| 1602 | 1 /** |
| 2 * Orthanc - A Lightweight, RESTful DICOM Store | |
| 1900 | 3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
| 1602 | 4 * Department, University Hospital of Liege, Belgium |
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5 * Copyright (C) 2017-2021 Osimis S.A., Belgium |
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6 * Copyright (C) 2021-2021 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
| 1602 | 7 * |
| 8 * This program is free software: you can redistribute it and/or | |
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9 * modify it under the terms of the GNU Lesser General Public License |
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10 * as published by the Free Software Foundation, either version 3 of |
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11 * the License, or (at your option) any later version. |
| 1602 | 12 * |
| 13 * This program is distributed in the hope that it will be useful, but | |
| 14 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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16 * Lesser General Public License for more details. |
| 1602 | 17 * |
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18 * You should have received a copy of the GNU Lesser General Public |
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19 * License along with this program. If not, see |
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20 * <http://www.gnu.org/licenses/>. |
| 1602 | 21 **/ |
| 22 | |
| 23 | |
| 1604 | 24 #include "../PrecompiledHeaders.h" |
| 1602 | 25 #include "JpegWriter.h" |
| 26 | |
| 27 #include "../OrthancException.h" | |
| 28 #include "../Logging.h" | |
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29 #include "JpegErrorManager.h" |
| 1602 | 30 |
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31 #if ORTHANC_SANDBOXED == 0 |
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32 # include "../SystemToolbox.h" |
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33 #endif |
| 1604 | 34 |
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35 #include <stdlib.h> |
| 1602 | 36 #include <vector> |
| 37 | |
| 38 namespace Orthanc | |
| 39 { | |
| 40 static void GetLines(std::vector<uint8_t*>& lines, | |
| 41 unsigned int height, | |
| 42 unsigned int pitch, | |
| 43 PixelFormat format, | |
| 44 const void* buffer) | |
| 45 { | |
| 46 if (format != PixelFormat_Grayscale8 && | |
| 47 format != PixelFormat_RGB24) | |
| 48 { | |
| 49 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 50 } | |
| 51 | |
| 52 lines.resize(height); | |
| 53 | |
| 54 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
| 55 for (unsigned int y = 0; y < height; y++) | |
| 56 { | |
| 57 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
| 58 } | |
| 59 } | |
| 60 | |
| 61 | |
| 62 static void Compress(struct jpeg_compress_struct& cinfo, | |
| 63 std::vector<uint8_t*>& lines, | |
| 64 unsigned int width, | |
| 65 unsigned int height, | |
| 66 PixelFormat format, | |
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67 uint8_t quality) |
| 1602 | 68 { |
| 69 cinfo.image_width = width; | |
| 70 cinfo.image_height = height; | |
| 71 | |
| 72 switch (format) | |
| 73 { | |
| 74 case PixelFormat_Grayscale8: | |
| 75 cinfo.input_components = 1; | |
| 76 cinfo.in_color_space = JCS_GRAYSCALE; | |
| 77 break; | |
| 78 | |
| 79 case PixelFormat_RGB24: | |
| 80 cinfo.input_components = 3; | |
| 81 cinfo.in_color_space = JCS_RGB; | |
| 82 break; | |
| 83 | |
| 84 default: | |
| 85 throw OrthancException(ErrorCode_InternalError); | |
| 86 } | |
| 87 | |
| 88 jpeg_set_defaults(&cinfo); | |
| 2683 | 89 |
| 90 // The "static_cast" is necessary on OS X: | |
| 91 // https://github.com/simonfuhrmann/mve/issues/371 | |
| 92 jpeg_set_quality(&cinfo, quality, static_cast<boolean>(true)); | |
| 93 jpeg_start_compress(&cinfo, static_cast<boolean>(true)); | |
| 94 | |
| 1602 | 95 jpeg_write_scanlines(&cinfo, &lines[0], height); |
| 96 jpeg_finish_compress(&cinfo); | |
| 97 jpeg_destroy_compress(&cinfo); | |
| 98 } | |
| 99 | |
| 100 | |
| 4300 | 101 JpegWriter::JpegWriter() : quality_(90) |
| 102 { | |
| 103 } | |
| 104 | |
| 105 | |
| 1602 | 106 void JpegWriter::SetQuality(uint8_t quality) |
| 107 { | |
| 2223 | 108 if (quality == 0 || quality > 100) |
| 1602 | 109 { |
| 110 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 111 } | |
| 112 | |
| 113 quality_ = quality; | |
| 114 } | |
| 115 | |
| 116 | |
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117 #if ORTHANC_SANDBOXED == 0 |
| 1916 | 118 void JpegWriter::WriteToFileInternal(const std::string& filename, |
| 119 unsigned int width, | |
| 120 unsigned int height, | |
| 121 unsigned int pitch, | |
| 122 PixelFormat format, | |
| 123 const void* buffer) | |
| 1602 | 124 { |
| 2140 | 125 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
| 1602 | 126 if (fp == NULL) |
| 127 { | |
| 2017 | 128 throw OrthancException(ErrorCode_CannotWriteFile); |
| 1602 | 129 } |
| 130 | |
| 131 std::vector<uint8_t*> lines; | |
| 132 GetLines(lines, height, pitch, format, buffer); | |
| 133 | |
| 134 struct jpeg_compress_struct cinfo; | |
| 135 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 136 | |
| 1604 | 137 Internals::JpegErrorManager jerr; |
| 1602 | 138 cinfo.err = jerr.GetPublic(); |
| 139 | |
| 140 if (setjmp(jerr.GetJumpBuffer())) | |
| 141 { | |
| 142 /* If we get here, the JPEG code has signaled an error. | |
| 143 * We need to clean up the JPEG object, close the input file, and return. | |
| 144 */ | |
| 145 jpeg_destroy_compress(&cinfo); | |
| 146 fclose(fp); | |
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147 throw OrthancException(ErrorCode_InternalError, |
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148 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 149 } |
| 150 | |
| 151 // Do not allocate data on the stack below this line! | |
| 152 | |
| 153 jpeg_create_compress(&cinfo); | |
| 154 jpeg_stdio_dest(&cinfo, fp); | |
| 155 Compress(cinfo, lines, width, height, format, quality_); | |
| 156 | |
| 157 // Everything went fine, "setjmp()" didn't get called | |
| 158 | |
| 159 fclose(fp); | |
| 160 } | |
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161 #endif |
| 1602 | 162 |
| 163 | |
| 1916 | 164 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
| 165 unsigned int width, | |
| 166 unsigned int height, | |
| 167 unsigned int pitch, | |
| 168 PixelFormat format, | |
| 169 const void* buffer) | |
| 1602 | 170 { |
| 171 std::vector<uint8_t*> lines; | |
| 172 GetLines(lines, height, pitch, format, buffer); | |
| 173 | |
| 174 struct jpeg_compress_struct cinfo; | |
| 175 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 176 | |
| 1604 | 177 Internals::JpegErrorManager jerr; |
| 1602 | 178 |
| 179 unsigned char* data = NULL; | |
| 180 unsigned long size; | |
| 181 | |
| 182 if (setjmp(jerr.GetJumpBuffer())) | |
| 183 { | |
| 184 jpeg_destroy_compress(&cinfo); | |
| 185 | |
| 186 if (data != NULL) | |
| 187 { | |
| 188 free(data); | |
| 189 } | |
| 190 | |
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191 throw OrthancException(ErrorCode_InternalError, |
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192 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 193 } |
| 194 | |
| 195 // Do not allocate data on the stack below this line! | |
| 196 | |
| 197 jpeg_create_compress(&cinfo); | |
| 198 cinfo.err = jerr.GetPublic(); | |
| 199 jpeg_mem_dest(&cinfo, &data, &size); | |
| 200 | |
| 201 Compress(cinfo, lines, width, height, format, quality_); | |
| 202 | |
| 203 // Everything went fine, "setjmp()" didn't get called | |
| 204 | |
| 205 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
| 206 free(data); | |
| 207 } | |
| 4300 | 208 |
| 209 uint8_t JpegWriter::GetQuality() const | |
| 210 { | |
| 211 return quality_; | |
| 212 } | |
| 1602 | 213 } |