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comparison Resources/Orthanc/Core/Images/JpegWriter.cpp @ 59:7a3853d51c45

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Move "Framework/Orthanc/" as "Resources/Orthanc/"
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 25 Nov 2016 16:34:34 +0100
parents Framework/Orthanc/Core/Images/JpegWriter.cpp@06847108819c
children 5b127ab0080b
comparison
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58:35468714a38e 59:7a3853d51c45
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 *
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
33 #include "../PrecompiledHeaders.h"
34 #include "JpegWriter.h"
35
36 #include "../OrthancException.h"
37 #include "../Logging.h"
38 #include "JpegErrorManager.h"
39
40 #if ORTHANC_SANDBOXED == 0
41 # include "../SystemToolbox.h"
42 #endif
43
44 #include <stdlib.h>
45 #include <vector>
46
47 namespace Orthanc
48 {
49 static void GetLines(std::vector<uint8_t*>& lines,
50 unsigned int height,
51 unsigned int pitch,
52 PixelFormat format,
53 const void* buffer)
54 {
55 if (format != PixelFormat_Grayscale8 &&
56 format != PixelFormat_RGB24)
57 {
58 throw OrthancException(ErrorCode_ParameterOutOfRange);
59 }
60
61 lines.resize(height);
62
63 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer));
64 for (unsigned int y = 0; y < height; y++)
65 {
66 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch);
67 }
68 }
69
70
71 static void Compress(struct jpeg_compress_struct& cinfo,
72 std::vector<uint8_t*>& lines,
73 unsigned int width,
74 unsigned int height,
75 PixelFormat format,
76 uint8_t quality)
77 {
78 cinfo.image_width = width;
79 cinfo.image_height = height;
80
81 switch (format)
82 {
83 case PixelFormat_Grayscale8:
84 cinfo.input_components = 1;
85 cinfo.in_color_space = JCS_GRAYSCALE;
86 break;
87
88 case PixelFormat_RGB24:
89 cinfo.input_components = 3;
90 cinfo.in_color_space = JCS_RGB;
91 break;
92
93 default:
94 throw OrthancException(ErrorCode_InternalError);
95 }
96
97 jpeg_set_defaults(&cinfo);
98 jpeg_set_quality(&cinfo, quality, TRUE);
99 jpeg_start_compress(&cinfo, TRUE);
100 jpeg_write_scanlines(&cinfo, &lines[0], height);
101 jpeg_finish_compress(&cinfo);
102 jpeg_destroy_compress(&cinfo);
103 }
104
105
106 void JpegWriter::SetQuality(uint8_t quality)
107 {
108 if (quality <= 0 || quality > 100)
109 {
110 throw OrthancException(ErrorCode_ParameterOutOfRange);
111 }
112
113 quality_ = quality;
114 }
115
116
117 #if ORTHANC_SANDBOXED == 0
118 void JpegWriter::WriteToFileInternal(const std::string& filename,
119 unsigned int width,
120 unsigned int height,
121 unsigned int pitch,
122 PixelFormat format,
123 const void* buffer)
124 {
125 FILE* fp = SystemToolbox::OpenFile(filename, FileMode_WriteBinary);
126 if (fp == NULL)
127 {
128 throw OrthancException(ErrorCode_CannotWriteFile);
129 }
130
131 std::vector<uint8_t*> lines;
132 GetLines(lines, height, pitch, format, buffer);
133
134 struct jpeg_compress_struct cinfo;
135 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct));
136
137 Internals::JpegErrorManager jerr;
138 cinfo.err = jerr.GetPublic();
139
140 if (setjmp(jerr.GetJumpBuffer()))
141 {
142 /* If we get here, the JPEG code has signaled an error.
143 * We need to clean up the JPEG object, close the input file, and return.
144 */
145 jpeg_destroy_compress(&cinfo);
146 fclose(fp);
147 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage();
148 throw OrthancException(ErrorCode_InternalError);
149 }
150
151 // Do not allocate data on the stack below this line!
152
153 jpeg_create_compress(&cinfo);
154 jpeg_stdio_dest(&cinfo, fp);
155 Compress(cinfo, lines, width, height, format, quality_);
156
157 // Everything went fine, "setjmp()" didn't get called
158
159 fclose(fp);
160 }
161 #endif
162
163
164 void JpegWriter::WriteToMemoryInternal(std::string& jpeg,
165 unsigned int width,
166 unsigned int height,
167 unsigned int pitch,
168 PixelFormat format,
169 const void* buffer)
170 {
171 std::vector<uint8_t*> lines;
172 GetLines(lines, height, pitch, format, buffer);
173
174 struct jpeg_compress_struct cinfo;
175 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct));
176
177 Internals::JpegErrorManager jerr;
178
179 unsigned char* data = NULL;
180 unsigned long size;
181
182 if (setjmp(jerr.GetJumpBuffer()))
183 {
184 jpeg_destroy_compress(&cinfo);
185
186 if (data != NULL)
187 {
188 free(data);
189 }
190
191 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage();
192 throw OrthancException(ErrorCode_InternalError);
193 }
194
195 // Do not allocate data on the stack below this line!
196
197 jpeg_create_compress(&cinfo);
198 cinfo.err = jerr.GetPublic();
199 jpeg_mem_dest(&cinfo, &data, &size);
200
201 Compress(cinfo, lines, width, height, format, quality_);
202
203 // Everything went fine, "setjmp()" didn't get called
204
205 jpeg.assign(reinterpret_cast<const char*>(data), size);
206 free(data);
207 }
208 }