Mercurial > hg > orthanc
annotate Core/Images/JpegWriter.cpp @ 2466:ae22df152ee2
todo
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Tue, 09 Jan 2018 12:54:00 +0100 |
| parents | 878b59270859 |
| children | 964fb9a5786d |
| 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) 2017-2018 Osimis S.A., Belgium |
| 1602 | 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 | |
| 1604 | 34 #include "../PrecompiledHeaders.h" |
| 1602 | 35 #include "JpegWriter.h" |
| 36 | |
| 37 #include "../OrthancException.h" | |
| 38 #include "../Logging.h" | |
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39 #include "JpegErrorManager.h" |
| 1602 | 40 |
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41 #if ORTHANC_SANDBOXED == 0 |
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42 # include "../SystemToolbox.h" |
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43 #endif |
| 1604 | 44 |
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45 #include <stdlib.h> |
| 1602 | 46 #include <vector> |
| 47 | |
| 48 namespace Orthanc | |
| 49 { | |
| 50 static void GetLines(std::vector<uint8_t*>& lines, | |
| 51 unsigned int height, | |
| 52 unsigned int pitch, | |
| 53 PixelFormat format, | |
| 54 const void* buffer) | |
| 55 { | |
| 56 if (format != PixelFormat_Grayscale8 && | |
| 57 format != PixelFormat_RGB24) | |
| 58 { | |
| 59 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 60 } | |
| 61 | |
| 62 lines.resize(height); | |
| 63 | |
| 64 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
| 65 for (unsigned int y = 0; y < height; y++) | |
| 66 { | |
| 67 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
| 68 } | |
| 69 } | |
| 70 | |
| 71 | |
| 72 static void Compress(struct jpeg_compress_struct& cinfo, | |
| 73 std::vector<uint8_t*>& lines, | |
| 74 unsigned int width, | |
| 75 unsigned int height, | |
| 76 PixelFormat format, | |
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77 uint8_t quality) |
| 1602 | 78 { |
| 79 cinfo.image_width = width; | |
| 80 cinfo.image_height = height; | |
| 81 | |
| 82 switch (format) | |
| 83 { | |
| 84 case PixelFormat_Grayscale8: | |
| 85 cinfo.input_components = 1; | |
| 86 cinfo.in_color_space = JCS_GRAYSCALE; | |
| 87 break; | |
| 88 | |
| 89 case PixelFormat_RGB24: | |
| 90 cinfo.input_components = 3; | |
| 91 cinfo.in_color_space = JCS_RGB; | |
| 92 break; | |
| 93 | |
| 94 default: | |
| 95 throw OrthancException(ErrorCode_InternalError); | |
| 96 } | |
| 97 | |
| 98 jpeg_set_defaults(&cinfo); | |
| 99 jpeg_set_quality(&cinfo, quality, TRUE); | |
| 100 jpeg_start_compress(&cinfo, TRUE); | |
| 101 jpeg_write_scanlines(&cinfo, &lines[0], height); | |
| 102 jpeg_finish_compress(&cinfo); | |
| 103 jpeg_destroy_compress(&cinfo); | |
| 104 } | |
| 105 | |
| 106 | |
| 107 void JpegWriter::SetQuality(uint8_t quality) | |
| 108 { | |
| 2223 | 109 if (quality == 0 || quality > 100) |
| 1602 | 110 { |
| 111 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 112 } | |
| 113 | |
| 114 quality_ = quality; | |
| 115 } | |
| 116 | |
| 117 | |
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118 #if ORTHANC_SANDBOXED == 0 |
| 1916 | 119 void JpegWriter::WriteToFileInternal(const std::string& filename, |
| 120 unsigned int width, | |
| 121 unsigned int height, | |
| 122 unsigned int pitch, | |
| 123 PixelFormat format, | |
| 124 const void* buffer) | |
| 1602 | 125 { |
| 2140 | 126 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
| 1602 | 127 if (fp == NULL) |
| 128 { | |
| 2017 | 129 throw OrthancException(ErrorCode_CannotWriteFile); |
| 1602 | 130 } |
| 131 | |
| 132 std::vector<uint8_t*> lines; | |
| 133 GetLines(lines, height, pitch, format, buffer); | |
| 134 | |
| 135 struct jpeg_compress_struct cinfo; | |
| 136 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 137 | |
| 1604 | 138 Internals::JpegErrorManager jerr; |
| 1602 | 139 cinfo.err = jerr.GetPublic(); |
| 140 | |
| 141 if (setjmp(jerr.GetJumpBuffer())) | |
| 142 { | |
| 143 /* If we get here, the JPEG code has signaled an error. | |
| 144 * We need to clean up the JPEG object, close the input file, and return. | |
| 145 */ | |
| 146 jpeg_destroy_compress(&cinfo); | |
| 147 fclose(fp); | |
| 148 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
| 149 throw OrthancException(ErrorCode_InternalError); | |
| 150 } | |
| 151 | |
| 152 // Do not allocate data on the stack below this line! | |
| 153 | |
| 154 jpeg_create_compress(&cinfo); | |
| 155 jpeg_stdio_dest(&cinfo, fp); | |
| 156 Compress(cinfo, lines, width, height, format, quality_); | |
| 157 | |
| 158 // Everything went fine, "setjmp()" didn't get called | |
| 159 | |
| 160 fclose(fp); | |
| 161 } | |
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162 #endif |
| 1602 | 163 |
| 164 | |
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165 #if ORTHANC_SANDBOXED == 0 |
| 1916 | 166 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
| 167 unsigned int width, | |
| 168 unsigned int height, | |
| 169 unsigned int pitch, | |
| 170 PixelFormat format, | |
| 171 const void* buffer) | |
| 1602 | 172 { |
| 173 std::vector<uint8_t*> lines; | |
| 174 GetLines(lines, height, pitch, format, buffer); | |
| 175 | |
| 176 struct jpeg_compress_struct cinfo; | |
| 177 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 178 | |
| 1604 | 179 Internals::JpegErrorManager jerr; |
| 1602 | 180 |
| 181 unsigned char* data = NULL; | |
| 182 unsigned long size; | |
| 183 | |
| 184 if (setjmp(jerr.GetJumpBuffer())) | |
| 185 { | |
| 186 jpeg_destroy_compress(&cinfo); | |
| 187 | |
| 188 if (data != NULL) | |
| 189 { | |
| 190 free(data); | |
| 191 } | |
| 192 | |
| 193 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
| 194 throw OrthancException(ErrorCode_InternalError); | |
| 195 } | |
| 196 | |
| 197 // Do not allocate data on the stack below this line! | |
| 198 | |
| 199 jpeg_create_compress(&cinfo); | |
| 200 cinfo.err = jerr.GetPublic(); | |
| 201 jpeg_mem_dest(&cinfo, &data, &size); | |
| 202 | |
| 203 Compress(cinfo, lines, width, height, format, quality_); | |
| 204 | |
| 205 // Everything went fine, "setjmp()" didn't get called | |
| 206 | |
| 207 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
| 208 free(data); | |
| 209 } | |
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210 #endif |
| 1602 | 211 } |