00001 /* 00002 * Copyright (C) 2003-2011 The Music Player Daemon Project 00003 * http://www.musicpd.org 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * - Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 00012 * - Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in the 00014 * documentation and/or other materials provided with the 00015 * distribution. 00016 * 00017 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 00018 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 00019 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 00020 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 00021 * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 00022 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00023 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00024 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 00025 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 00026 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 00027 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 00028 * OF THE POSSIBILITY OF SUCH DAMAGE. 00029 */ 00030 00041 #ifndef MPD_FIFO_BUFFER_H 00042 #define MPD_FIFO_BUFFER_H 00043 00044 #include <stdbool.h> 00045 #include <stddef.h> 00046 00047 struct fifo_buffer; 00048 00056 struct fifo_buffer * 00057 fifo_buffer_new(size_t size); 00058 00068 struct fifo_buffer * 00069 fifo_buffer_realloc(struct fifo_buffer *buffer, size_t new_size); 00070 00074 void 00075 fifo_buffer_free(struct fifo_buffer *buffer); 00076 00081 size_t 00082 fifo_buffer_capacity(const struct fifo_buffer *buffer); 00083 00087 size_t 00088 fifo_buffer_available(const struct fifo_buffer *buffer); 00089 00095 void 00096 fifo_buffer_clear(struct fifo_buffer *buffer); 00097 00107 const void * 00108 fifo_buffer_read(const struct fifo_buffer *buffer, size_t *length_r); 00109 00116 void 00117 fifo_buffer_consume(struct fifo_buffer *buffer, size_t length); 00118 00129 void * 00130 fifo_buffer_write(struct fifo_buffer *buffer, size_t *max_length_r); 00131 00138 void 00139 fifo_buffer_append(struct fifo_buffer *buffer, size_t length); 00140 00144 bool 00145 fifo_buffer_is_empty(struct fifo_buffer *buffer); 00146 00150 bool 00151 fifo_buffer_is_full(struct fifo_buffer *buffer); 00152 00153 #endif