Logo Search packages:      
Sourcecode: linux version File versions  Download package

dvb_demux.h

/*
 * dvb_demux.h: DVB kernel demux API
 *
 * Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
 *                         for convergence integrated media GmbH
 *
 * This program 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 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 Lesser General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 *
 */

#ifndef _DVB_DEMUX_H_
#define _DVB_DEMUX_H_

#include <linux/time.h>
#include <linux/timer.h>
#include <linux/spinlock.h>
#include <linux/mutex.h>

#include "demux.h"

#define DMX_TYPE_TS  0
#define DMX_TYPE_SEC 1
#define DMX_TYPE_PES 2

#define DMX_STATE_FREE      0
#define DMX_STATE_ALLOCATED 1
#define DMX_STATE_SET       2
#define DMX_STATE_READY     3
#define DMX_STATE_GO        4

#define DVB_DEMUX_MASK_MAX 18

struct dvb_demux_filter {
      struct dmx_section_filter filter;
      u8 maskandmode[DMX_MAX_FILTER_SIZE];
      u8 maskandnotmode[DMX_MAX_FILTER_SIZE];
      int doneq;

      struct dvb_demux_filter *next;
      struct dvb_demux_feed *feed;
      int index;
      int state;
      int type;

      u16 hw_handle;
      struct timer_list timer;
};

#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)

struct dvb_demux_feed {
      union {
            struct dmx_ts_feed ts;
            struct dmx_section_feed sec;
      } feed;

      union {
            dmx_ts_cb ts;
            dmx_section_cb sec;
      } cb;

      struct dvb_demux *demux;
      void *priv;
      int type;
      int state;
      u16 pid;
      u8 *buffer;
      int buffer_size;

      struct timespec timeout;
      struct dvb_demux_filter *filter;

      int ts_type;
      enum dmx_ts_pes pes_type;

      int cc;
      int pusi_seen;          /* prevents feeding of garbage from previous section */

      u16 peslen;

      struct list_head list_head;
      unsigned int index;     /* a unique index for each feed (can be used as hardware pid filter index) */
};

struct dvb_demux {
      struct dmx_demux dmx;
      void *priv;
      int filternum;
      int feednum;
      int (*start_feed)(struct dvb_demux_feed *feed);
      int (*stop_feed)(struct dvb_demux_feed *feed);
      int (*write_to_decoder)(struct dvb_demux_feed *feed,
                         const u8 *buf, size_t len);
      u32 (*check_crc32)(struct dvb_demux_feed *feed,
                      const u8 *buf, size_t len);
      void (*memcopy)(struct dvb_demux_feed *feed, u8 *dst,
                   const u8 *src, size_t len);

      int users;
#define MAX_DVB_DEMUX_USERS 10
      struct dvb_demux_filter *filter;
      struct dvb_demux_feed *feed;

      struct list_head frontend_list;

      struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER];
      u16 pids[DMX_TS_PES_OTHER];
      int playing;
      int recording;

#define DMX_MAX_PID 0x2000
      struct list_head feed_list;
      u8 tsbuf[204];
      int tsbufp;

      struct mutex mutex;
      spinlock_t lock;
};

int dvb_dmx_init(struct dvb_demux *dvbdemux);
void dvb_dmx_release(struct dvb_demux *dvbdemux);
void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf,
                        size_t count);
void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf,
                    size_t count);

#endif /* _DVB_DEMUX_H_ */

Generated by  Doxygen 1.6.0   Back to index