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/*
* Copyright (C) 2003-2013 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef MPD_MUSIC_BUFFER_HXX
#define MPD_MUSIC_BUFFER_HXX
/**
* An allocator for #music_chunk objects.
*/
struct music_buffer;
/**
* Creates a new #music_buffer object.
*
* @param num_chunks the number of #music_chunk reserved in this
* buffer
*/
struct music_buffer *
music_buffer_new(unsigned num_chunks);
/**
* Frees the #music_buffer object
*/
void
music_buffer_free(struct music_buffer *buffer);
/**
* Returns the total number of reserved chunks in this buffer. This
* is the same value which was passed to the constructor
* music_buffer_new().
*/
unsigned
music_buffer_size(const struct music_buffer *buffer);
/**
* Allocates a chunk from the buffer. When it is not used anymore,
* call music_buffer_return().
*
* @return an empty chunk or NULL if there are no chunks available
*/
struct music_chunk *
music_buffer_allocate(struct music_buffer *buffer);
/**
* Returns a chunk to the buffer. It can be reused by
* music_buffer_allocate() then.
*/
void
music_buffer_return(struct music_buffer *buffer, struct music_chunk *chunk);
#endif
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