Mercurial > hg > orthanc
annotate Core/Images/JpegWriter.cpp @ 2031:a6e8e2251304
merge
| author | Sebastien Jodogne <s.jodogne@gmail.com> |
|---|---|
| date | Mon, 20 Jun 2016 16:03:26 +0200 |
| parents | 08ce34cfacad |
| children | bfeacb51af20 |
| 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 |
| 5 * | |
| 6 * This program is free software: you can redistribute it and/or | |
| 7 * modify it under the terms of the GNU General Public License as | |
| 8 * published by the Free Software Foundation, either version 3 of the | |
| 9 * License, or (at your option) any later version. | |
| 10 * | |
| 11 * In addition, as a special exception, the copyright holders of this | |
| 12 * program give permission to link the code of its release with the | |
| 13 * OpenSSL project's "OpenSSL" library (or with modified versions of it | |
| 14 * that use the same license as the "OpenSSL" library), and distribute | |
| 15 * the linked executables. You must obey the GNU General Public License | |
| 16 * in all respects for all of the code used other than "OpenSSL". If you | |
| 17 * modify file(s) with this exception, you may extend this exception to | |
| 18 * your version of the file(s), but you are not obligated to do so. If | |
| 19 * you do not wish to do so, delete this exception statement from your | |
| 20 * version. If you delete this exception statement from all source files | |
| 21 * in the program, then also delete it here. | |
| 22 * | |
| 23 * This program is distributed in the hope that it will be useful, but | |
| 24 * WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 26 * General Public License for more details. | |
| 27 * | |
| 28 * You should have received a copy of the GNU General Public License | |
| 29 * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
| 30 **/ | |
| 31 | |
| 32 | |
| 1604 | 33 #include "../PrecompiledHeaders.h" |
| 1602 | 34 #include "JpegWriter.h" |
| 35 | |
| 36 #include "../OrthancException.h" | |
| 37 #include "../Logging.h" | |
| 38 | |
| 1604 | 39 #include "JpegErrorManager.h" |
| 40 | |
|
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501769757bf9
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parents:
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41 #include <stdlib.h> |
| 1602 | 42 #include <vector> |
| 43 | |
| 44 namespace Orthanc | |
| 45 { | |
| 46 static void GetLines(std::vector<uint8_t*>& lines, | |
| 47 unsigned int height, | |
| 48 unsigned int pitch, | |
| 49 PixelFormat format, | |
| 50 const void* buffer) | |
| 51 { | |
| 52 if (format != PixelFormat_Grayscale8 && | |
| 53 format != PixelFormat_RGB24) | |
| 54 { | |
| 55 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 56 } | |
| 57 | |
| 58 lines.resize(height); | |
| 59 | |
| 60 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
| 61 for (unsigned int y = 0; y < height; y++) | |
| 62 { | |
| 63 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
| 64 } | |
| 65 } | |
| 66 | |
| 67 | |
| 68 static void Compress(struct jpeg_compress_struct& cinfo, | |
| 69 std::vector<uint8_t*>& lines, | |
| 70 unsigned int width, | |
| 71 unsigned int height, | |
| 72 PixelFormat format, | |
|
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Sebastien Jodogne <s.jodogne@gmail.com>
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|
73 uint8_t quality) |
| 1602 | 74 { |
| 75 cinfo.image_width = width; | |
| 76 cinfo.image_height = height; | |
| 77 | |
| 78 switch (format) | |
| 79 { | |
| 80 case PixelFormat_Grayscale8: | |
| 81 cinfo.input_components = 1; | |
| 82 cinfo.in_color_space = JCS_GRAYSCALE; | |
| 83 break; | |
| 84 | |
| 85 case PixelFormat_RGB24: | |
| 86 cinfo.input_components = 3; | |
| 87 cinfo.in_color_space = JCS_RGB; | |
| 88 break; | |
| 89 | |
| 90 default: | |
| 91 throw OrthancException(ErrorCode_InternalError); | |
| 92 } | |
| 93 | |
| 94 jpeg_set_defaults(&cinfo); | |
| 95 jpeg_set_quality(&cinfo, quality, TRUE); | |
| 96 jpeg_start_compress(&cinfo, TRUE); | |
| 97 jpeg_write_scanlines(&cinfo, &lines[0], height); | |
| 98 jpeg_finish_compress(&cinfo); | |
| 99 jpeg_destroy_compress(&cinfo); | |
| 100 } | |
| 101 | |
| 102 | |
| 103 void JpegWriter::SetQuality(uint8_t quality) | |
| 104 { | |
| 105 if (quality <= 0 || quality > 100) | |
| 106 { | |
| 107 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
| 108 } | |
| 109 | |
| 110 quality_ = quality; | |
| 111 } | |
| 112 | |
| 113 | |
| 1916 | 114 void JpegWriter::WriteToFileInternal(const std::string& filename, |
| 115 unsigned int width, | |
| 116 unsigned int height, | |
| 117 unsigned int pitch, | |
| 118 PixelFormat format, | |
| 119 const void* buffer) | |
| 1602 | 120 { |
| 2017 | 121 FILE* fp = Toolbox::OpenFile(filename, FileMode_WriteBinary); |
| 1602 | 122 if (fp == NULL) |
| 123 { | |
| 2017 | 124 throw OrthancException(ErrorCode_CannotWriteFile); |
| 1602 | 125 } |
| 126 | |
| 127 std::vector<uint8_t*> lines; | |
| 128 GetLines(lines, height, pitch, format, buffer); | |
| 129 | |
| 130 struct jpeg_compress_struct cinfo; | |
| 131 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 132 | |
| 1604 | 133 Internals::JpegErrorManager jerr; |
| 1602 | 134 cinfo.err = jerr.GetPublic(); |
| 135 | |
| 136 if (setjmp(jerr.GetJumpBuffer())) | |
| 137 { | |
| 138 /* If we get here, the JPEG code has signaled an error. | |
| 139 * We need to clean up the JPEG object, close the input file, and return. | |
| 140 */ | |
| 141 jpeg_destroy_compress(&cinfo); | |
| 142 fclose(fp); | |
| 143 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
| 144 throw OrthancException(ErrorCode_InternalError); | |
| 145 } | |
| 146 | |
| 147 // Do not allocate data on the stack below this line! | |
| 148 | |
| 149 jpeg_create_compress(&cinfo); | |
| 150 jpeg_stdio_dest(&cinfo, fp); | |
| 151 Compress(cinfo, lines, width, height, format, quality_); | |
| 152 | |
| 153 // Everything went fine, "setjmp()" didn't get called | |
| 154 | |
| 155 fclose(fp); | |
| 156 } | |
| 157 | |
| 158 | |
| 1916 | 159 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
| 160 unsigned int width, | |
| 161 unsigned int height, | |
| 162 unsigned int pitch, | |
| 163 PixelFormat format, | |
| 164 const void* buffer) | |
| 1602 | 165 { |
| 166 std::vector<uint8_t*> lines; | |
| 167 GetLines(lines, height, pitch, format, buffer); | |
| 168 | |
| 169 struct jpeg_compress_struct cinfo; | |
| 170 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
| 171 | |
| 1604 | 172 Internals::JpegErrorManager jerr; |
| 1602 | 173 |
| 174 unsigned char* data = NULL; | |
| 175 unsigned long size; | |
| 176 | |
| 177 if (setjmp(jerr.GetJumpBuffer())) | |
| 178 { | |
| 179 jpeg_destroy_compress(&cinfo); | |
| 180 | |
| 181 if (data != NULL) | |
| 182 { | |
| 183 free(data); | |
| 184 } | |
| 185 | |
| 186 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
| 187 throw OrthancException(ErrorCode_InternalError); | |
| 188 } | |
| 189 | |
| 190 // Do not allocate data on the stack below this line! | |
| 191 | |
| 192 jpeg_create_compress(&cinfo); | |
| 193 cinfo.err = jerr.GetPublic(); | |
| 194 jpeg_mem_dest(&cinfo, &data, &size); | |
| 195 | |
| 196 Compress(cinfo, lines, width, height, format, quality_); | |
| 197 | |
| 198 // Everything went fine, "setjmp()" didn't get called | |
| 199 | |
| 200 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
| 201 free(data); | |
| 202 } | |
| 203 } |