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comparison OrthancFramework/Sources/Images/JpegReader.cpp @ 4044:d25f4c0fa160 framework

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splitting code into OrthancFramework and OrthancServer
author Sebastien Jodogne <s.jodogne@gmail.com>
date Wed, 10 Jun 2020 20:30:34 +0200
parents Core/Images/JpegReader.cpp@94f4a18a79cc
children bf7b9edf6b81
comparison
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4043:6c6239aec462 4044:d25f4c0fa160
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 * Copyright (C) 2017-2020 Osimis S.A., Belgium
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
34 #include "../PrecompiledHeaders.h"
35 #include "JpegReader.h"
36
37 #include "JpegErrorManager.h"
38 #include "../OrthancException.h"
39 #include "../Logging.h"
40
41 #if ORTHANC_SANDBOXED == 0
42 # include "../SystemToolbox.h"
43 #endif
44
45
46 namespace Orthanc
47 {
48 static void Uncompress(struct jpeg_decompress_struct& cinfo,
49 std::string& content,
50 ImageAccessor& accessor)
51 {
52 // The "static_cast" is necessary on OS X:
53 // https://github.com/simonfuhrmann/mve/issues/371
54 jpeg_read_header(&cinfo, static_cast<boolean>(true));
55
56 jpeg_start_decompress(&cinfo);
57
58 PixelFormat format;
59 if (cinfo.output_components == 1 &&
60 cinfo.out_color_space == JCS_GRAYSCALE)
61 {
62 format = PixelFormat_Grayscale8;
63 }
64 else if (cinfo.output_components == 3 &&
65 cinfo.out_color_space == JCS_RGB)
66 {
67 format = PixelFormat_RGB24;
68 }
69 else
70 {
71 throw OrthancException(ErrorCode_NotImplemented);
72 }
73
74 unsigned int pitch = cinfo.output_width * cinfo.output_components;
75
76 /* Make a one-row-high sample array that will go away when done with image */
77 JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, pitch, 1);
78
79 try
80 {
81 content.resize(pitch * cinfo.output_height);
82 }
83 catch (...)
84 {
85 throw OrthancException(ErrorCode_NotEnoughMemory);
86 }
87
88 accessor.AssignWritable(format, cinfo.output_width, cinfo.output_height, pitch,
89 content.empty() ? NULL : &content[0]);
90
91 uint8_t* target = reinterpret_cast<uint8_t*>(&content[0]);
92 while (cinfo.output_scanline < cinfo.output_height)
93 {
94 jpeg_read_scanlines(&cinfo, buffer, 1);
95 memcpy(target, buffer[0], pitch);
96 target += pitch;
97 }
98
99 // Everything went fine, "setjmp()" didn't get called
100
101 jpeg_finish_decompress(&cinfo);
102 }
103
104
105 #if ORTHANC_SANDBOXED == 0
106 void JpegReader::ReadFromFile(const std::string& filename)
107 {
108 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_ReadBinary);
109 if (!fp)
110 {
111 throw OrthancException(ErrorCode_InexistentFile);
112 }
113
114 struct jpeg_decompress_struct cinfo;
115 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct));
116
117 Internals::JpegErrorManager jerr;
118 cinfo.err = jerr.GetPublic();
119
120 if (setjmp(jerr.GetJumpBuffer()))
121 {
122 jpeg_destroy_decompress(&cinfo);
123 fclose(fp);
124
125 throw OrthancException(ErrorCode_InternalError,
126 "Error during JPEG decoding: " + jerr.GetMessage());
127 }
128
129 // Below this line, we are under the scope of a "setjmp"
130
131 jpeg_create_decompress(&cinfo);
132 jpeg_stdio_src(&cinfo, fp);
133
134 try
135 {
136 Uncompress(cinfo, content_, *this);
137 }
138 catch (OrthancException&)
139 {
140 jpeg_destroy_decompress(&cinfo);
141 fclose(fp);
142 throw;
143 }
144
145 jpeg_destroy_decompress(&cinfo);
146 fclose(fp);
147 }
148 #endif
149
150
151 void JpegReader::ReadFromMemory(const void* buffer,
152 size_t size)
153 {
154 struct jpeg_decompress_struct cinfo;
155 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct));
156
157 Internals::JpegErrorManager jerr;
158 cinfo.err = jerr.GetPublic();
159
160 if (setjmp(jerr.GetJumpBuffer()))
161 {
162 jpeg_destroy_decompress(&cinfo);
163 throw OrthancException(ErrorCode_InternalError,
164 "Error during JPEG decoding: " + jerr.GetMessage());
165 }
166
167 // Below this line, we are under the scope of a "setjmp"
168 jpeg_create_decompress(&cinfo);
169 jpeg_mem_src(&cinfo,
170 const_cast<unsigned char*>(
171 reinterpret_cast<const unsigned char*>(buffer)),
172 static_cast<unsigned long>(size));
173
174 try
175 {
176 Uncompress(cinfo, content_, *this);
177 }
178 catch (OrthancException&)
179 {
180 jpeg_destroy_decompress(&cinfo);
181 throw;
182 }
183
184 jpeg_destroy_decompress(&cinfo);
185 }
186
187
188 void JpegReader::ReadFromMemory(const std::string& buffer)
189 {
190 if (buffer.empty())
191 {
192 ReadFromMemory(NULL, 0);
193 }
194 else
195 {
196 ReadFromMemory(buffer.c_str(), buffer.size());
197 }
198 }
199 }