Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/JpegWriter.cpp @ 4564:5a0adc1c19a9 db-changes
avoid copy of objects in ServerIndex
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 08 Mar 2021 11:08:03 +0100 |
| parents | d9473bd5ed43 |
| children | 7053502fbf97 |
| rev | line source |
|---|---|
| 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 |
| 1602 | 6 * |
| 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 Lesser General Public License |
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9 * as published by the Free Software Foundation, either version 3 of |
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10 * the License, or (at your option) any later version. |
| 1602 | 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 | |
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15 * Lesser General Public License for more details. |
| 1602 | 16 * |
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17 * You should have received a copy of the GNU Lesser General Public |
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18 * License along with this program. If not, see |
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19 * <http://www.gnu.org/licenses/>. |
| 1602 | 20 **/ |
| 21 | |
| 22 | |
| 1604 | 23 #include "../PrecompiledHeaders.h" |
| 1602 | 24 #include "JpegWriter.h" |
| 25 | |
| 26 #include "../OrthancException.h" | |
| 27 #include "../Logging.h" | |
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28 #include "JpegErrorManager.h" |
| 1602 | 29 |
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30 #if ORTHANC_SANDBOXED == 0 |
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31 # include "../SystemToolbox.h" |
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32 #endif |
| 1604 | 33 |
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34 #include <stdlib.h> |
| 1602 | 35 #include <vector> |
| 36 | |
| 37 namespace Orthanc | |
| 38 { | |
| 39 static void GetLines(std::vector<uint8_t*>& lines, | |
| 40 unsigned int height, | |
| 41 unsigned int pitch, | |
| 42 PixelFormat format, | |
| 43 const void* buffer) | |
| 44 { | |
| 45 if (format != PixelFormat_Grayscale8 && | |
| 46 format != PixelFormat_RGB24) | |
| 47 { | |
| 48 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 49 } | |
| 50 | |
| 51 lines.resize(height); | |
| 52 | |
| 53 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
| 54 for (unsigned int y = 0; y < height; y++) | |
| 55 { | |
| 56 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 | |
| 61 static void Compress(struct jpeg_compress_struct& cinfo, | |
| 62 std::vector<uint8_t*>& lines, | |
| 63 unsigned int width, | |
| 64 unsigned int height, | |
| 65 PixelFormat format, | |
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66 uint8_t quality) |
| 1602 | 67 { |
| 68 cinfo.image_width = width; | |
| 69 cinfo.image_height = height; | |
| 70 | |
| 71 switch (format) | |
| 72 { | |
| 73 case PixelFormat_Grayscale8: | |
| 74 cinfo.input_components = 1; | |
| 75 cinfo.in_color_space = JCS_GRAYSCALE; | |
| 76 break; | |
| 77 | |
| 78 case PixelFormat_RGB24: | |
| 79 cinfo.input_components = 3; | |
| 80 cinfo.in_color_space = JCS_RGB; | |
| 81 break; | |
| 82 | |
| 83 default: | |
| 84 throw OrthancException(ErrorCode_InternalError); | |
| 85 } | |
| 86 | |
| 87 jpeg_set_defaults(&cinfo); | |
| 2683 | 88 |
| 89 // The "static_cast" is necessary on OS X: | |
| 90 // https://github.com/simonfuhrmann/mve/issues/371 | |
| 91 jpeg_set_quality(&cinfo, quality, static_cast<boolean>(true)); | |
| 92 jpeg_start_compress(&cinfo, static_cast<boolean>(true)); | |
| 93 | |
| 1602 | 94 jpeg_write_scanlines(&cinfo, &lines[0], height); |
| 95 jpeg_finish_compress(&cinfo); | |
| 96 jpeg_destroy_compress(&cinfo); | |
| 97 } | |
| 98 | |
| 99 | |
| 4300 | 100 JpegWriter::JpegWriter() : quality_(90) |
| 101 { | |
| 102 } | |
| 103 | |
| 104 | |
| 1602 | 105 void JpegWriter::SetQuality(uint8_t quality) |
| 106 { | |
| 2223 | 107 if (quality == 0 || quality > 100) |
| 1602 | 108 { |
| 109 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 110 } | |
| 111 | |
| 112 quality_ = quality; | |
| 113 } | |
| 114 | |
| 115 | |
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116 #if ORTHANC_SANDBOXED == 0 |
| 1916 | 117 void JpegWriter::WriteToFileInternal(const std::string& filename, |
| 118 unsigned int width, | |
| 119 unsigned int height, | |
| 120 unsigned int pitch, | |
| 121 PixelFormat format, | |
| 122 const void* buffer) | |
| 1602 | 123 { |
| 2140 | 124 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
| 1602 | 125 if (fp == NULL) |
| 126 { | |
| 2017 | 127 throw OrthancException(ErrorCode_CannotWriteFile); |
| 1602 | 128 } |
| 129 | |
| 130 std::vector<uint8_t*> lines; | |
| 131 GetLines(lines, height, pitch, format, buffer); | |
| 132 | |
| 133 struct jpeg_compress_struct cinfo; | |
| 134 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 135 | |
| 1604 | 136 Internals::JpegErrorManager jerr; |
| 1602 | 137 cinfo.err = jerr.GetPublic(); |
| 138 | |
| 139 if (setjmp(jerr.GetJumpBuffer())) | |
| 140 { | |
| 141 /* If we get here, the JPEG code has signaled an error. | |
| 142 * We need to clean up the JPEG object, close the input file, and return. | |
| 143 */ | |
| 144 jpeg_destroy_compress(&cinfo); | |
| 145 fclose(fp); | |
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146 throw OrthancException(ErrorCode_InternalError, |
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147 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 148 } |
| 149 | |
| 150 // Do not allocate data on the stack below this line! | |
| 151 | |
| 152 jpeg_create_compress(&cinfo); | |
| 153 jpeg_stdio_dest(&cinfo, fp); | |
| 154 Compress(cinfo, lines, width, height, format, quality_); | |
| 155 | |
| 156 // Everything went fine, "setjmp()" didn't get called | |
| 157 | |
| 158 fclose(fp); | |
| 159 } | |
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160 #endif |
| 1602 | 161 |
| 162 | |
| 1916 | 163 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
| 164 unsigned int width, | |
| 165 unsigned int height, | |
| 166 unsigned int pitch, | |
| 167 PixelFormat format, | |
| 168 const void* buffer) | |
| 1602 | 169 { |
| 170 std::vector<uint8_t*> lines; | |
| 171 GetLines(lines, height, pitch, format, buffer); | |
| 172 | |
| 173 struct jpeg_compress_struct cinfo; | |
| 174 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 175 | |
| 1604 | 176 Internals::JpegErrorManager jerr; |
| 1602 | 177 |
| 178 unsigned char* data = NULL; | |
| 179 unsigned long size; | |
| 180 | |
| 181 if (setjmp(jerr.GetJumpBuffer())) | |
| 182 { | |
| 183 jpeg_destroy_compress(&cinfo); | |
| 184 | |
| 185 if (data != NULL) | |
| 186 { | |
| 187 free(data); | |
| 188 } | |
| 189 | |
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190 throw OrthancException(ErrorCode_InternalError, |
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191 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 192 } |
| 193 | |
| 194 // Do not allocate data on the stack below this line! | |
| 195 | |
| 196 jpeg_create_compress(&cinfo); | |
| 197 cinfo.err = jerr.GetPublic(); | |
| 198 jpeg_mem_dest(&cinfo, &data, &size); | |
| 199 | |
| 200 Compress(cinfo, lines, width, height, format, quality_); | |
| 201 | |
| 202 // Everything went fine, "setjmp()" didn't get called | |
| 203 | |
| 204 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
| 205 free(data); | |
| 206 } | |
| 4300 | 207 |
| 208 uint8_t JpegWriter::GetQuality() const | |
| 209 { | |
| 210 return quality_; | |
| 211 } | |
| 1602 | 212 } |