MPD
icy_metadata.h
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1 /*
2  * Copyright (C) 2003-2010 The Music Player Daemon Project
3  * http://www.musicpd.org
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  *
10  * This program 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
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License along
16  * with this program; if not, write to the Free Software Foundation, Inc.,
17  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
18  */
19 
20 #ifndef ICY_METADATA_H
21 #define ICY_METADATA_H
22 
23 #include <stdbool.h>
24 #include <stddef.h>
25 
26 struct icy_metadata {
28 
30  char *meta_data;
31 
32  struct tag *tag;
33 };
34 
38 static inline void
40 {
41  im->data_size = 0;
42 }
43 
48 static inline void
49 icy_start(struct icy_metadata *im, size_t data_size)
50 {
51  im->data_size = im->data_rest = data_size;
52  im->meta_size = 0;
53  im->tag = NULL;
54 }
55 
59 void
60 icy_reset(struct icy_metadata *im);
61 
62 void
63 icy_deinit(struct icy_metadata *im);
64 
68 static inline bool
69 icy_defined(const struct icy_metadata *im)
70 {
71  return im->data_size > 0;
72 }
73 
80 size_t
81 icy_data(struct icy_metadata *im, size_t length);
82 
88 size_t
89 icy_meta(struct icy_metadata *im, const void *data, size_t length);
90 
91 static inline struct tag *
92 icy_tag(struct icy_metadata *im)
93 {
94  struct tag *tag = im->tag;
95  im->tag = NULL;
96  return tag;
97 }
98 
99 #endif