1 /* jpeg-data.h
2  *
3  * Copyright (c) 2001 Lutz Mueller <lutz@users.sourceforge.net>
4  *
5  * This library is free software; you can redistribute it and/or
6  * modify it under the terms of the GNU Lesser General Public
7  * License as published by the Free Software Foundation; either
8  * version 2 of the License, or (at your option) any later version.
9  *
10  * This library is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
13  * Lesser General Public License for more details.
14  *
15  * You should have received a copy of the GNU Lesser General Public
16  * License along with this library; if not, write to the
17  * Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18  * Boston, MA  02110-1301  USA.
19  */
20 
21 #ifndef __JPEG_DATA_H__
22 #define __JPEG_DATA_H__
23 
24 #include "libjpeg/jpeg-marker.h"
25 
26 #include <libexif/exif-data.h>
27 #include <libexif/exif-log.h>
28 
29 typedef ExifData * JPEGContentAPP1;
30 
31 typedef struct _JPEGContentGeneric JPEGContentGeneric;
32 struct _JPEGContentGeneric
33 {
34 	unsigned char *data;
35 	unsigned int size;
36 };
37 
38 typedef union _JPEGContent JPEGContent;
39 union _JPEGContent
40 {
41 	JPEGContentGeneric generic;
42 	JPEGContentAPP1    app1;
43 };
44 
45 typedef struct _JPEGSection JPEGSection;
46 struct _JPEGSection
47 {
48 	JPEGMarker marker;
49 	JPEGContent content;
50 };
51 
52 typedef struct _JPEGData        JPEGData;
53 typedef struct _JPEGDataPrivate JPEGDataPrivate;
54 
55 struct _JPEGData
56 {
57 	JPEGSection *sections;
58 	unsigned int count;
59 
60 	unsigned char *data;
61 	unsigned int size;
62 
63 	JPEGDataPrivate *priv;
64 };
65 
66 JPEGData *jpeg_data_new           (void);
67 JPEGData *jpeg_data_new_from_file (const char *path);
68 JPEGData *jpeg_data_new_from_data (const unsigned char *data,
69 				   unsigned int size);
70 
71 void      jpeg_data_ref   (JPEGData *data);
72 void      jpeg_data_unref (JPEGData *data);
73 void      jpeg_data_free  (JPEGData *data);
74 
75 void      jpeg_data_load_data     (JPEGData *data, const unsigned char *d,
76 				   unsigned int size);
77 void      jpeg_data_save_data     (JPEGData *data, unsigned char **d,
78 				   unsigned int *size);
79 
80 void      jpeg_data_load_file     (JPEGData *data, const char *path);
81 int       jpeg_data_save_file     (JPEGData *data, const char *path);
82 
83 void      jpeg_data_set_exif_data (JPEGData *data, ExifData *exif_data);
84 ExifData *jpeg_data_get_exif_data (JPEGData *data);
85 
86 void      jpeg_data_dump (JPEGData *data);
87 
88 void      jpeg_data_append_section (JPEGData *data);
89 
90 void      jpeg_data_log (JPEGData *data, ExifLog *log);
91 
92 #endif /* __JPEG_DATA_H__ */
93