Mercurial > hg > orthanc
annotate Core/Images/JpegWriter.cpp @ 1818:1065401501fb worklists
ParsedDicomFile::CreateFromJson
author | Sebastien Jodogne <s.jodogne@gmail.com> |
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date | Tue, 24 Nov 2015 16:48:23 +0100 |
parents | 3727a09e7b53 |
children | b1291df2f780 |
rev | line source |
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1602 | 1 /** |
2 * Orthanc - A Lightweight, RESTful DICOM Store | |
3 * Copyright (C) 2012-2015 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 | |
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 | |
1602 | 41 #include <vector> |
42 | |
43 namespace Orthanc | |
44 { | |
45 static void GetLines(std::vector<uint8_t*>& lines, | |
46 unsigned int height, | |
47 unsigned int pitch, | |
48 PixelFormat format, | |
49 const void* buffer) | |
50 { | |
51 if (format != PixelFormat_Grayscale8 && | |
52 format != PixelFormat_RGB24) | |
53 { | |
54 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
55 } | |
56 | |
57 lines.resize(height); | |
58 | |
59 uint8_t* base = const_cast<uint8_t*>(reinterpret_cast<const uint8_t*>(buffer)); | |
60 for (unsigned int y = 0; y < height; y++) | |
61 { | |
62 lines[y] = base + static_cast<intptr_t>(y) * static_cast<intptr_t>(pitch); | |
63 } | |
64 } | |
65 | |
66 | |
67 static void Compress(struct jpeg_compress_struct& cinfo, | |
68 std::vector<uint8_t*>& lines, | |
69 unsigned int width, | |
70 unsigned int height, | |
71 PixelFormat format, | |
1654
3727a09e7b53
fix some icc warnings
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1612
diff
changeset
|
72 uint8_t quality) |
1602 | 73 { |
74 cinfo.image_width = width; | |
75 cinfo.image_height = height; | |
76 | |
77 switch (format) | |
78 { | |
79 case PixelFormat_Grayscale8: | |
80 cinfo.input_components = 1; | |
81 cinfo.in_color_space = JCS_GRAYSCALE; | |
82 break; | |
83 | |
84 case PixelFormat_RGB24: | |
85 cinfo.input_components = 3; | |
86 cinfo.in_color_space = JCS_RGB; | |
87 break; | |
88 | |
89 default: | |
90 throw OrthancException(ErrorCode_InternalError); | |
91 } | |
92 | |
93 jpeg_set_defaults(&cinfo); | |
94 jpeg_set_quality(&cinfo, quality, TRUE); | |
95 jpeg_start_compress(&cinfo, TRUE); | |
96 jpeg_write_scanlines(&cinfo, &lines[0], height); | |
97 jpeg_finish_compress(&cinfo); | |
98 jpeg_destroy_compress(&cinfo); | |
99 } | |
100 | |
101 | |
102 void JpegWriter::SetQuality(uint8_t quality) | |
103 { | |
104 if (quality <= 0 || quality > 100) | |
105 { | |
106 throw OrthancException(ErrorCode_ParameterOutOfRange); | |
107 } | |
108 | |
109 quality_ = quality; | |
110 } | |
111 | |
112 | |
113 void JpegWriter::WriteToFile(const char* filename, | |
114 unsigned int width, | |
115 unsigned int height, | |
116 unsigned int pitch, | |
117 PixelFormat format, | |
118 const void* buffer) | |
119 { | |
120 FILE* fp = fopen(filename, "wb"); | |
121 if (fp == NULL) | |
122 { | |
123 throw OrthancException(ErrorCode_FullStorage); | |
124 } | |
125 | |
126 std::vector<uint8_t*> lines; | |
127 GetLines(lines, height, pitch, format, buffer); | |
128 | |
129 struct jpeg_compress_struct cinfo; | |
130 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
131 | |
1604 | 132 Internals::JpegErrorManager jerr; |
1602 | 133 cinfo.err = jerr.GetPublic(); |
134 | |
135 if (setjmp(jerr.GetJumpBuffer())) | |
136 { | |
137 /* If we get here, the JPEG code has signaled an error. | |
138 * We need to clean up the JPEG object, close the input file, and return. | |
139 */ | |
140 jpeg_destroy_compress(&cinfo); | |
141 fclose(fp); | |
142 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
143 throw OrthancException(ErrorCode_InternalError); | |
144 } | |
145 | |
146 // Do not allocate data on the stack below this line! | |
147 | |
148 jpeg_create_compress(&cinfo); | |
149 jpeg_stdio_dest(&cinfo, fp); | |
150 Compress(cinfo, lines, width, height, format, quality_); | |
151 | |
152 // Everything went fine, "setjmp()" didn't get called | |
153 | |
154 fclose(fp); | |
155 } | |
156 | |
157 | |
158 void JpegWriter::WriteToMemory(std::string& jpeg, | |
159 unsigned int width, | |
160 unsigned int height, | |
161 unsigned int pitch, | |
162 PixelFormat format, | |
163 const void* buffer) | |
164 { | |
165 std::vector<uint8_t*> lines; | |
166 GetLines(lines, height, pitch, format, buffer); | |
167 | |
168 struct jpeg_compress_struct cinfo; | |
169 memset(&cinfo, 0, sizeof(struct jpeg_compress_struct)); | |
170 | |
1604 | 171 Internals::JpegErrorManager jerr; |
1602 | 172 |
173 unsigned char* data = NULL; | |
174 unsigned long size; | |
175 | |
176 if (setjmp(jerr.GetJumpBuffer())) | |
177 { | |
178 jpeg_destroy_compress(&cinfo); | |
179 | |
180 if (data != NULL) | |
181 { | |
182 free(data); | |
183 } | |
184 | |
185 LOG(ERROR) << "Error during JPEG encoding: " << jerr.GetMessage(); | |
186 throw OrthancException(ErrorCode_InternalError); | |
187 } | |
188 | |
189 // Do not allocate data on the stack below this line! | |
190 | |
191 jpeg_create_compress(&cinfo); | |
192 cinfo.err = jerr.GetPublic(); | |
193 jpeg_mem_dest(&cinfo, &data, &size); | |
194 | |
195 Compress(cinfo, lines, width, height, format, quality_); | |
196 | |
197 // Everything went fine, "setjmp()" didn't get called | |
198 | |
199 jpeg.assign(reinterpret_cast<const char*>(data), size); | |
200 free(data); | |
201 } | |
202 } |