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comparison Resources/Orthanc/Core/Images/JpegReader.cpp @ 200:03afbee0cc7b

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integration of Orthanc core into Stone
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 23 Mar 2018 11:04:03 +0100
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199:dabe9982fca3 200:03afbee0cc7b
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) 2017-2018 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 jpeg_read_header(&cinfo, TRUE);
53 jpeg_start_decompress(&cinfo);
54
55 PixelFormat format;
56 if (cinfo.output_components == 1 &&
57 cinfo.out_color_space == JCS_GRAYSCALE)
58 {
59 format = PixelFormat_Grayscale8;
60 }
61 else if (cinfo.output_components == 3 &&
62 cinfo.out_color_space == JCS_RGB)
63 {
64 format = PixelFormat_RGB24;
65 }
66 else
67 {
68 throw OrthancException(ErrorCode_NotImplemented);
69 }
70
71 unsigned int pitch = cinfo.output_width * cinfo.output_components;
72
73 /* Make a one-row-high sample array that will go away when done with image */
74 JSAMPARRAY buffer = (*cinfo.mem->alloc_sarray) ((j_common_ptr) &cinfo, JPOOL_IMAGE, pitch, 1);
75
76 try
77 {
78 content.resize(pitch * cinfo.output_height);
79 }
80 catch (...)
81 {
82 throw OrthancException(ErrorCode_NotEnoughMemory);
83 }
84
85 accessor.AssignWritable(format, cinfo.output_width, cinfo.output_height, pitch,
86 content.empty() ? NULL : &content[0]);
87
88 uint8_t* target = reinterpret_cast<uint8_t*>(&content[0]);
89 while (cinfo.output_scanline < cinfo.output_height)
90 {
91 jpeg_read_scanlines(&cinfo, buffer, 1);
92 memcpy(target, buffer[0], pitch);
93 target += pitch;
94 }
95
96 // Everything went fine, "setjmp()" didn't get called
97
98 jpeg_finish_decompress(&cinfo);
99 }
100
101
102 #if ORTHANC_SANDBOXED == 0
103 void JpegReader::ReadFromFile(const std::string& filename)
104 {
105 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_ReadBinary);
106 if (!fp)
107 {
108 throw OrthancException(ErrorCode_InexistentFile);
109 }
110
111 struct jpeg_decompress_struct cinfo;
112 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct));
113
114 Internals::JpegErrorManager jerr;
115 cinfo.err = jerr.GetPublic();
116
117 if (setjmp(jerr.GetJumpBuffer()))
118 {
119 jpeg_destroy_decompress(&cinfo);
120 fclose(fp);
121 LOG(ERROR) << "Error during JPEG decoding: " << jerr.GetMessage();
122 throw OrthancException(ErrorCode_InternalError);
123 }
124
125 // Below this line, we are under the scope of a "setjmp"
126
127 jpeg_create_decompress(&cinfo);
128 jpeg_stdio_src(&cinfo, fp);
129
130 try
131 {
132 Uncompress(cinfo, content_, *this);
133 }
134 catch (OrthancException&)
135 {
136 jpeg_destroy_decompress(&cinfo);
137 fclose(fp);
138 throw;
139 }
140
141 jpeg_destroy_decompress(&cinfo);
142 fclose(fp);
143 }
144 #endif
145
146
147 void JpegReader::ReadFromMemory(const void* buffer,
148 size_t size)
149 {
150 struct jpeg_decompress_struct cinfo;
151 memset(&cinfo, 0, sizeof(struct jpeg_decompress_struct));
152
153 Internals::JpegErrorManager jerr;
154 cinfo.err = jerr.GetPublic();
155
156 if (setjmp(jerr.GetJumpBuffer()))
157 {
158 jpeg_destroy_decompress(&cinfo);
159 LOG(ERROR) << "Error during JPEG decoding: " << jerr.GetMessage();
160 throw OrthancException(ErrorCode_InternalError);
161 }
162
163 // Below this line, we are under the scope of a "setjmp"
164 jpeg_create_decompress(&cinfo);
165 jpeg_mem_src(&cinfo, const_cast<unsigned char*>(reinterpret_cast<const unsigned char*>(buffer)), size);
166
167 try
168 {
169 Uncompress(cinfo, content_, *this);
170 }
171 catch (OrthancException&)
172 {
173 jpeg_destroy_decompress(&cinfo);
174 throw;
175 }
176
177 jpeg_destroy_decompress(&cinfo);
178 }
179
180
181 void JpegReader::ReadFromMemory(const std::string& buffer)
182 {
183 if (buffer.empty())
184 {
185 ReadFromMemory(NULL, 0);
186 }
187 else
188 {
189 ReadFromMemory(buffer.c_str(), buffer.size());
190 }
191 }
192 }