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/*
 *  Copyright(c) Siemens AG, Muenchen, Germany, 2005, 2006, 2007
 *                           Bernhard Walle <bernhard.walle@gmx.de>
 *                           Gernot Hillier <gernot.hillier@siemens.com>
 *
 * ----------------------------------------------------------------------------
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as 
 * published by the Free Software Foundation;
 *
 * 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., 675 Mass Ave, Cambridge, MA 02139, USA.
 * ----------------------------------------------------------------------------
 */
#ifndef MOST_TXBUF
#define MOST_TXBUF

#ifdef HAVE_CONFIG_H
#include "config/config.h"
#endif
#ifndef USP_TEST
#  include <asm/uaccess.h>            /* copy_from_user() */
#  include <linux/module.h>
#  include <linux/wait.h>
#else
#  include "usp-test.h"
#endif

#include "most-common.h"
#include "most-constants.h"
#include "rt-nrt.h"

struct tx_buffer {
    unsigned char     *buffer;                    
    unsigned char     *writeptr[MOST_SYNC_OPENS]; 
    int               writer_count;               
    unsigned char     *readptr;                   
    unsigned int      full_count;                 
    rtnrt_lock_t      lock;                       
    int               frame_count;                
    int               bytes_per_frame;            
};


struct tx_buffer *txbuf_alloc(unsigned int writer_count, 
                              unsigned int frame_count,
                              unsigned int bytes_per_frame);

void txbuf_free(struct tx_buffer *ring);

ssize_t txbuf_get(struct tx_buffer      *ring, 
                  unsigned char         *buffer,
                  size_t                bytes);

ssize_t txbuf_put(struct tx_buffer              *ring,
                  int                           writer_index,
                  struct frame_part             frame_part,
                  const char                    *buffer,
                  size_t                        bytes,
                  struct rtnrt_memcopy_desc     *copy);

bool txbuf_is_full(struct tx_buffer *ring, int writer_index);

void txbuf_print_debug(struct tx_buffer *ring);


#endif /* MOST_TXBUF */

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