LXR linux-bk/drivers/media/dvb/dvb-core/dvb

   1/* 
   2 * dvb_demux.h: DVB kernel demux API
   3 *
   4 * Copyright (C) 2000-2001 Marcus Metzler & Ralph Metzler
   5 *                         for convergence integrated media GmbH
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU Lesser General Public License
   9 * as published by the Free Software Foundation; either version 2.1
  10 * of the License, or (at your option) any later version.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU Lesser General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  20 *
  21 */
  22
  23
  24#ifndef _DVB_DEMUX_H_
  25#define _DVB_DEMUX_H_
  26
  27#include <linux/time.h>
  28#include <linux/timer.h>
  29#include <linux/spinlock.h>
  30#include <asm/semaphore.h>
  31
  32#include "demux.h"
  33
  34#define DMX_TYPE_TS  0
  35#define DMX_TYPE_SEC 1
  36#define DMX_TYPE_PES 2
  37
  38#define DMX_STATE_FREE      0
  39#define DMX_STATE_ALLOCATED 1
  40#define DMX_STATE_SET       2
  41#define DMX_STATE_READY     3
  42#define DMX_STATE_GO        4
  43
  44#define DVB_DEMUX_MASK_MAX 18
  45
  46struct dvb_demux_filter {
  47        struct dmx_section_filter filter;
  48        u8 maskandmode    [DMX_MAX_FILTER_SIZE]; 
  49        u8 maskandnotmode [DMX_MAX_FILTER_SIZE]; 
  50        int doneq;
  51                
  52        struct dvb_demux_filter *next;
  53        struct dvb_demux_feed *feed;
  54        int index;
  55        int state;
  56        int type;
  57        int pesto;
  58
  59        u16 handle;
  60        u16 hw_handle;
  61        struct timer_list timer;
  62        int ts_state;
  63};
  64
  65
  66#define DMX_FEED_ENTRY(pos) list_entry(pos, struct dvb_demux_feed, list_head)
  67
  68struct dvb_demux_feed {
  69        union {
  70                struct dmx_ts_feed ts;
  71                struct dmx_section_feed sec;
  72        } feed;
  73
  74        union {
  75                dmx_ts_cb ts;
  76                dmx_section_cb sec;
  77        } cb;
  78
  79        struct dvb_demux *demux;
  80        void *priv;
  81        int type;
  82        int state;
  83        u16 pid;
  84        u8 *buffer;
  85        int buffer_size;
  86        int descramble;
  87
  88        struct timespec timeout; 
  89        struct dvb_demux_filter *filter;
  90        int cb_length;
  91  
  92        int ts_type;
  93        enum dmx_ts_pes pes_type;
  94
  95        int cc;
  96        int pusi_seen; /* prevents feeding of garbage from previous section */
  97
  98        u16 peslen;
  99
 100        struct list_head list_head;
 101};
 102
 103struct dvb_demux {
 104        struct dmx_demux dmx;
 105        void *priv;
 106        int filternum;
 107        int feednum;
 108        int (*start_feed) (struct dvb_demux_feed *feed);
 109        int (*stop_feed) (struct dvb_demux_feed *feed);
 110        int (*write_to_decoder) (struct dvb_demux_feed *feed,
 111                                 const u8 *buf, size_t len);
 112        u32 (*check_crc32) (struct dvb_demux_feed *feed,
 113                            const u8 *buf, size_t len);
 114        void (*memcopy) (struct dvb_demux_feed *feed, u8 *dst,
 115                         const u8 *src, size_t len);
 116  
 117        int users;
 118#define MAX_DVB_DEMUX_USERS 10
 119        struct dvb_demux_filter *filter;
 120        struct dvb_demux_feed *feed;
 121
 122        struct list_head frontend_list;
 123
 124        struct dvb_demux_feed *pesfilter[DMX_TS_PES_OTHER];
 125        u16 pids[DMX_TS_PES_OTHER];
 126        int playing; 
 127        int recording; 
 128
 129#define DMX_MAX_PID 0x2000
 130        struct list_head feed_list;
 131        u8 tsbuf[204];
 132        int tsbufp;
 133
 134        struct semaphore mutex;
 135        spinlock_t lock;
 136};
 137
 138
 139int dvb_dmx_init(struct dvb_demux *dvbdemux);
 140int dvb_dmx_release(struct dvb_demux *dvbdemux);
 141void dvb_dmx_swfilter_packet(struct dvb_demux *dvbdmx, const u8 *buf);
 142void dvb_dmx_swfilter_packets(struct dvb_demux *dvbdmx, const u8 *buf, size_t count);
 143void dvb_dmx_swfilter(struct dvb_demux *demux, const u8 *buf, size_t count);
 144void dvb_dmx_swfilter_204(struct dvb_demux *demux, const u8 *buf, size_t count);
 145
 146int dvbdmx_connect_frontend(struct dmx_demux *demux, struct dmx_frontend *frontend);
 147int dvbdmx_disconnect_frontend(struct dmx_demux *demux);
 148
 149#endif /* _DVB_DEMUX_H_ */
 150
 151