00001 /* 00002 * Copyright (C) 2003-2009 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