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# src/icy_metadata.h

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    00001 /*
    00002  * Copyright (C) 2003-2010 The Music Player Daemon Project
    00003  * http://www.musicpd.org
    00004  *
    00005  * This program is free software; you can redistribute it and/or modify
    00006  * it under the terms of the GNU General Public License as published by
    00007  * the Free Software Foundation; either version 2 of the License, or
    00008  * (at your option) any later version.
    00009  *
    00010  * This program is distributed in the hope that it will be useful,
    00011  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    00012  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    00013  * GNU General Public License for more details.
    00014  *
    00015  * You should have received a copy of the GNU General Public License along
    00016  * with this program; if not, write to the Free Software Foundation, Inc.,
    00017  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
    00018  */
    00019
    00020 #ifndef ICY_METADATA_H
    00021 #define ICY_METADATA_H
    00022
    00023 #include <stdbool.h>
    00024 #include <stddef.h>
    00025
    00026 struct icy_metadata {
    00027         size_t data_size, data_rest;
    00028
    00029         size_t meta_size, meta_position;
    00030         char *meta_data;
    00031
    00032         struct tag *tag;
    00033 };
    00034
    00038 static inline void
    00039 icy_clear(struct icy_metadata *im)
    00040 {
    00041         im->data_size = 0;
    00042 }
    00043
    00048 static inline void
    00049 icy_start(struct icy_metadata *im, size_t data_size)
    00050 {
    00051         im->data_size = im->data_rest = data_size;
    00052         im->meta_size = 0;
    00053         im->tag = NULL;
    00054 }
    00055
    00059 void
    00060 icy_reset(struct icy_metadata *im);
    00061
    00062 void
    00063 icy_deinit(struct icy_metadata *im);
    00064
    00068 static inline bool
    00069 icy_defined(const struct icy_metadata *im)
    00070 {
    00071         return im->data_size > 0;
    00072 }
    00073
    00080 size_t
    00081 icy_data(struct icy_metadata *im, size_t length);
    00082
    00088 size_t
    00089 icy_meta(struct icy_metadata *im, const void *data, size_t length);
    00090
    00091 static inline struct tag *
    00092 icy_tag(struct icy_metadata *im)
    00093 {
    00094         struct tag *tag = im->tag;
    00095         im->tag = NULL;
    00096         return tag;
    00097 }
    00098
    00099 #endif