Mercurial > hg > orthanc
annotate OrthancFramework/Sources/Images/JpegWriter.cpp @ 4224:38d446c9ee1d
fix
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Wed, 30 Sep 2020 17:59:09 +0200 |
| parents | bf7b9edf6b81 |
| children | b30a8de92ad9 |
| 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) 2017-2020 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 | |
| 100 void JpegWriter::SetQuality(uint8_t quality) | |
| 101 { | |
| 2223 | 102 if (quality == 0 || quality > 100) |
| 1602 | 103 { |
| 104 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 105 } | |
| 106 | |
| 107 quality_ = quality; | |
| 108 } | |
| 109 | |
| 110 | |
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111 #if ORTHANC_SANDBOXED == 0 |
| 1916 | 112 void JpegWriter::WriteToFileInternal(const std::string& filename, |
| 113 unsigned int width, | |
| 114 unsigned int height, | |
| 115 unsigned int pitch, | |
| 116 PixelFormat format, | |
| 117 const void* buffer) | |
| 1602 | 118 { |
| 2140 | 119 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
| 1602 | 120 if (fp == NULL) |
| 121 { | |
| 2017 | 122 throw OrthancException(ErrorCode_CannotWriteFile); |
| 1602 | 123 } |
| 124 | |
| 125 std::vector<uint8_t*> lines; | |
| 126 GetLines(lines, height, pitch, format, buffer); | |
| 127 | |
| 128 struct jpeg_compress_struct cinfo; | |
| 129 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 130 | |
| 1604 | 131 Internals::JpegErrorManager jerr; |
| 1602 | 132 cinfo.err = jerr.GetPublic(); |
| 133 | |
| 134 if (setjmp(jerr.GetJumpBuffer())) | |
| 135 { | |
| 136 /* If we get here, the JPEG code has signaled an error. | |
| 137 * We need to clean up the JPEG object, close the input file, and return. | |
| 138 */ | |
| 139 jpeg_destroy_compress(&cinfo); | |
| 140 fclose(fp); | |
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141 throw OrthancException(ErrorCode_InternalError, |
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142 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 143 } |
| 144 | |
| 145 // Do not allocate data on the stack below this line! | |
| 146 | |
| 147 jpeg_create_compress(&cinfo); | |
| 148 jpeg_stdio_dest(&cinfo, fp); | |
| 149 Compress(cinfo, lines, width, height, format, quality_); | |
| 150 | |
| 151 // Everything went fine, "setjmp()" didn't get called | |
| 152 | |
| 153 fclose(fp); | |
| 154 } | |
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155 #endif |
| 1602 | 156 |
| 157 | |
| 1916 | 158 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
| 159 unsigned int width, | |
| 160 unsigned int height, | |
| 161 unsigned int pitch, | |
| 162 PixelFormat format, | |
| 163 const void* buffer) | |
| 1602 | 164 { |
| 165 std::vector<uint8_t*> lines; | |
| 166 GetLines(lines, height, pitch, format, buffer); | |
| 167 | |
| 168 struct jpeg_compress_struct cinfo; | |
| 169 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 170 | |
| 1604 | 171 Internals::JpegErrorManager jerr; |
| 1602 | 172 |
| 173 unsigned char* data = NULL; | |
| 174 unsigned long size; | |
| 175 | |
| 176 if (setjmp(jerr.GetJumpBuffer())) | |
| 177 { | |
| 178 jpeg_destroy_compress(&cinfo); | |
| 179 | |
| 180 if (data != NULL) | |
| 181 { | |
| 182 free(data); | |
| 183 } | |
| 184 | |
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185 throw OrthancException(ErrorCode_InternalError, |
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186 "Error during JPEG encoding: " + jerr.GetMessage()); |
| 1602 | 187 } |
| 188 | |
| 189 // Do not allocate data on the stack below this line! | |
| 190 | |
| 191 jpeg_create_compress(&cinfo); | |
| 192 cinfo.err = jerr.GetPublic(); | |
| 193 jpeg_mem_dest(&cinfo, &data, &size); | |
| 194 | |
| 195 Compress(cinfo, lines, width, height, format, quality_); | |
| 196 | |
| 197 // Everything went fine, "setjmp()" didn't get called | |
| 198 | |
| 199 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
| 200 free(data); | |
| 201 } | |
| 202 } |