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/*****************************************************************************
* buffer.h: buffer management
*****************************************************************************
* Copyright (C) 2011 M2X BV
*
* Authors: Jean-Paul Saman <jpsaman@videolan.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*****************************************************************************/
#ifndef DVBINFO_BUFFER_H_
#define DVBINFO_BUFFER_H_
typedef struct buffer_s buffer_t;
struct buffer_s
{
size_t i_size; /* size of buffer data */
mtime_t i_date; /* timestamp */
buffer_t *p_next; /* pointer to next buffer_t */
uint8_t *p_data; /* actuall buffer data */
};
typedef struct fifo_s fifo_t;
/* Buffer management:
* buffer_new() - create new buffer of size i_size + plus header structure
* buffer_free() - free buffer
*/
buffer_t *buffer_new(size_t i_size);
void buffer_free(buffer_t *buffer);
/* Fifo:
* fifo_new() - create a new fifo holding buffer_t pointers
* fifo_free() - release fifo and all buffers contained therein
* fifo_count()- number of buffers in fifo_t
* fifo_size() - total size of buffers in fifo_t
* fifo_push() - push buffer at end of fifo
* fifo_pop() - pop buffer from start of fifo
* fifo_wake() - wake up fifo listeners
*/
fifo_t *fifo_new(void);
void fifo_free(fifo_t *fifo);
ssize_t fifo_count(fifo_t *fifo);
size_t fifo_size(fifo_t *fifo);
void fifo_push(fifo_t *fifo, buffer_t *buffer);
buffer_t *fifo_pop(fifo_t *fifo);
void fifo_wake(fifo_t *fifo);
#endif
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