1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
|
// Creative Commons has made the contents of this file
// available under a CC-GNU-LGPL license:
//
// http://creativecommons.org/licenses/LGPL/2.1/
//
// A copy of the full license can be found as part of this
// distribution in the file COPYING.
//
// You may use the liblicense software in accordance with the
// terms of that license. You agree that you are solely
// responsible for your use of the liblicense software and you
// represent and warrant to Creative Commons that your use
// of the liblicense software will comply with the CC-GNU-LGPL.
//
// Copyright 2007, Creative Commons, www.creativecommons.org.
// Copyright 2007, Jason Kivlighn.
// Copyright (C) 2007 Peter Miller
#include <stdio.h>
#include <stdbool.h>
#include <string.h>
#include <liblicense.h>
#include <exempi/xmp.h>
#include <exempi/xmpconsts.h>
#include "shared_xmp.h"
void exempi_init()
{
xmp_init();
/* FIXME: This should check return value, etc. */
xmp_register_namespace(NS_CC, "cc", NULL);
}
void exempi_shutdown()
{
xmp_terminate();
}
/* this is a work around a bad bug in exempi 1.99.8
* should be retro compatible. Remove when you require
* exempi 1.99.8 and up
*/
#ifndef XMP_OPEN_ONLYXMP
#define XMP_OPEN_ONLYXMP XMP_OPEN_OPNLYXMP
#endif
char* exempi_read( const char* filename, const ll_uri_t predicate )
{
XmpFilePtr f;
XmpPtr xmp;
char *uri_string;
struct _ll_shared_xmp_ns_and_rest namespace_etc;
namespace_etc = _ll_shared_xmp_uri2struct(predicate);
if (namespace_etc.namespace == NULL) {
return NULL;
}
f = xmp_files_open_new(filename, XMP_OPEN_ONLYXMP);
if (f == NULL) {
// Golly gee whiz, you can't open that file. xmp_err() or
// something like it could tell us why, if only we wanted to
// know. We'll return NULL as allowed in liblicense.h's
// doxygen for ll_read().
return NULL; // again, magic return value. Sucks. FIXME.
}
// Otherwise, it's okay to continue.
xmp = xmp_files_get_new_xmp(f);
uri_string = NULL;
if ( xmp ) {
XmpStringPtr license_uri = xmp_string_new();
if ( xmp_get_property(xmp, namespace_etc.namespace,
namespace_etc.rest, license_uri, NULL) ) {
uri_string = strdup(xmp_string_cstr(license_uri));
}
xmp_string_free(license_uri);
xmp_free(xmp);
}
xmp_files_close(f, XMP_CLOSE_NOOPTION);
return uri_string;
}
int exempi_write( const char* filename, const char* predicate, const char* uri )
{
int success = true;
XmpFilePtr f;
XmpPtr xmp;
struct _ll_shared_xmp_ns_and_rest namespace_etc;
namespace_etc = _ll_shared_xmp_uri2struct(predicate);
if (namespace_etc.namespace == NULL) {
return -LL_E_MODULE_WRITE_FAIL;
}
f = xmp_files_open_new(filename, XMP_OPEN_FORUPDATE | XMP_OPEN_ONLYXMP);
if (f == NULL) {
return -LL_E_MODULE_WRITE_FAIL;
}
xmp = xmp_files_get_new_xmp(f);
if ( xmp == NULL ) {
if (uri == NULL) return 1;
xmp = xmp_new_empty();
}
//FIXME: I think exempi needs a xmp_del_property(). For now, set the uri to ""
// FIXME: It just got one recently, curiously enough!
if ( uri == NULL ) {
uri = "";
}
if ( xmp_files_can_put_xmp(f, xmp) ) {
xmp_set_property(xmp, namespace_etc.namespace,
namespace_etc.rest, uri, 0);
xmp_files_put_xmp(f, xmp);
} else {
fprintf(stderr,"Unable to write XMP to this file.\n");
success = false;
}
xmp_files_close(f, XMP_CLOSE_SAFEUPDATE);
xmp_free(xmp);
return success;
}
const char *exempi_supported_predicates[] = {LL_LICENSE, LL_WEBSTATEMENT, LL_MORE_PERMISSIONS, LL_CREATOR, NULL};
const char *exempi_mime_types[] = {"image/jpeg",
"image/png",
"image/tiff",
"application/pdf",
"video/x-msvideo",
"video/quicktime",
"audio/x-wav",
NULL};
LL_MODULE_DEFINE("exempi.so",
"Embeds licenses in formats recognized by Adobe's SDK.",
"0.1",
LL_FEATURES_EMBED,
exempi_supported_predicates,
exempi_mime_types,
exempi_init,exempi_read,exempi_write,exempi_shutdown);
|
