Mercurial > hg > orthanc
annotate Core/Images/JpegWriter.cpp @ 2170:baf8dd89b4e0
improved support for sandboxed environments
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Wed, 23 Nov 2016 11:45:02 +0100 |
parents | fd5875662670 |
children | 35febe19e874 |
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 |
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" | |
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38 #include "../SystemToolbox.h" |
1602 | 39 |
1604 | 40 #include "JpegErrorManager.h" |
41 | |
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42 #include <stdlib.h> |
1602 | 43 #include <vector> |
44 | |
45 namespace Orthanc | |
46 { | |
47 static void GetLines(std::vector<uint8_t*>& lines, | |
48 unsigned int height, | |
49 unsigned int pitch, | |
50 PixelFormat format, | |
51 const void* buffer) | |
52 { | |
53 if (format != PixelFormat_Grayscale8 && | |
54 format != PixelFormat_RGB24) | |
55 { | |
56 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
57 } | |
58 | |
59 lines.resize(height); | |
60 | |
61 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
62 for (unsigned int y = 0; y < height; y++) | |
63 { | |
64 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
65 } | |
66 } | |
67 | |
68 | |
69 static void Compress(struct jpeg_compress_struct& cinfo, | |
70 std::vector<uint8_t*>& lines, | |
71 unsigned int width, | |
72 unsigned int height, | |
73 PixelFormat format, | |
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74 uint8_t quality) |
1602 | 75 { |
76 cinfo.image_width = width; | |
77 cinfo.image_height = height; | |
78 | |
79 switch (format) | |
80 { | |
81 case PixelFormat_Grayscale8: | |
82 cinfo.input_components = 1; | |
83 cinfo.in_color_space = JCS_GRAYSCALE; | |
84 break; | |
85 | |
86 case PixelFormat_RGB24: | |
87 cinfo.input_components = 3; | |
88 cinfo.in_color_space = JCS_RGB; | |
89 break; | |
90 | |
91 default: | |
92 throw OrthancException(ErrorCode_InternalError); | |
93 } | |
94 | |
95 jpeg_set_defaults(&cinfo); | |
96 jpeg_set_quality(&cinfo, quality, TRUE); | |
97 jpeg_start_compress(&cinfo, TRUE); | |
98 jpeg_write_scanlines(&cinfo, &lines[0], height); | |
99 jpeg_finish_compress(&cinfo); | |
100 jpeg_destroy_compress(&cinfo); | |
101 } | |
102 | |
103 | |
104 void JpegWriter::SetQuality(uint8_t quality) | |
105 { | |
106 if (quality <= 0 || quality > 100) | |
107 { | |
108 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
109 } | |
110 | |
111 quality_ = quality; | |
112 } | |
113 | |
114 | |
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115 #if ORTHANC_SANDBOXED == 0 |
1916 | 116 void JpegWriter::WriteToFileInternal(const std::string& filename, |
117 unsigned int width, | |
118 unsigned int height, | |
119 unsigned int pitch, | |
120 PixelFormat format, | |
121 const void* buffer) | |
1602 | 122 { |
2140 | 123 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary); |
1602 | 124 if (fp == NULL) |
125 { | |
2017 | 126 throw OrthancException(ErrorCode_CannotWriteFile); |
1602 | 127 } |
128 | |
129 std::vector<uint8_t*> lines; | |
130 GetLines(lines, height, pitch, format, buffer); | |
131 | |
132 struct jpeg_compress_struct cinfo; | |
133 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
134 | |
1604 | 135 Internals::JpegErrorManager jerr; |
1602 | 136 cinfo.err = jerr.GetPublic(); |
137 | |
138 if (setjmp(jerr.GetJumpBuffer())) | |
139 { | |
140 /* If we get here, the JPEG code has signaled an error. | |
141 * We need to clean up the JPEG object, close the input file, and return. | |
142 */ | |
143 jpeg_destroy_compress(&cinfo); | |
144 fclose(fp); | |
145 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
146 throw OrthancException(ErrorCode_InternalError); | |
147 } | |
148 | |
149 // Do not allocate data on the stack below this line! | |
150 | |
151 jpeg_create_compress(&cinfo); | |
152 jpeg_stdio_dest(&cinfo, fp); | |
153 Compress(cinfo, lines, width, height, format, quality_); | |
154 | |
155 // Everything went fine, "setjmp()" didn't get called | |
156 | |
157 fclose(fp); | |
158 } | |
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improved support for sandboxed environments
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
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diff
changeset
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159 #endif |
1602 | 160 |
161 | |
1916 | 162 void JpegWriter::WriteToMemoryInternal(std::string& jpeg, |
163 unsigned int width, | |
164 unsigned int height, | |
165 unsigned int pitch, | |
166 PixelFormat format, | |
167 const void* buffer) | |
1602 | 168 { |
169 std::vector<uint8_t*> lines; | |
170 GetLines(lines, height, pitch, format, buffer); | |
171 | |
172 struct jpeg_compress_struct cinfo; | |
173 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
174 | |
1604 | 175 Internals::JpegErrorManager jerr; |
1602 | 176 |
177 unsigned char* data = NULL; | |
178 unsigned long size; | |
179 | |
180 if (setjmp(jerr.GetJumpBuffer())) | |
181 { | |
182 jpeg_destroy_compress(&cinfo); | |
183 | |
184 if (data != NULL) | |
185 { | |
186 free(data); | |
187 } | |
188 | |
189 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
190 throw OrthancException(ErrorCode_InternalError); | |
191 } | |
192 | |
193 // Do not allocate data on the stack below this line! | |
194 | |
195 jpeg_create_compress(&cinfo); | |
196 cinfo.err = jerr.GetPublic(); | |
197 jpeg_mem_dest(&cinfo, &data, &size); | |
198 | |
199 Compress(cinfo, lines, width, height, format, quality_); | |
200 | |
201 // Everything went fine, "setjmp()" didn't get called | |
202 | |
203 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
204 free(data); | |
205 } | |
206 } |