LXR linux/drivers/media/dvb-core/dmxdev.h

   1/*
   2 * dmxdev.h
   3 *
   4 * Copyright (C) 2000 Ralph Metzler & Marcus 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#ifndef _DMXDEV_H_
  24#define _DMXDEV_H_
  25
  26#include <linux/types.h>
  27#include <linux/spinlock.h>
  28#include <linux/kernel.h>
  29#include <linux/time.h>
  30#include <linux/timer.h>
  31#include <linux/wait.h>
  32#include <linux/fs.h>
  33#include <linux/string.h>
  34#include <linux/mutex.h>
  35#include <linux/slab.h>
  36
  37#include <linux/dvb/dmx.h>
  38
  39#include "dvbdev.h"
  40#include "demux.h"
  41#include "dvb_ringbuffer.h"
  42
  43enum dmxdev_type {
  44        DMXDEV_TYPE_NONE,
  45        DMXDEV_TYPE_SEC,
  46        DMXDEV_TYPE_PES,
  47};
  48
  49enum dmxdev_state {
  50        DMXDEV_STATE_FREE,
  51        DMXDEV_STATE_ALLOCATED,
  52        DMXDEV_STATE_SET,
  53        DMXDEV_STATE_GO,
  54        DMXDEV_STATE_DONE,
  55        DMXDEV_STATE_TIMEDOUT
  56};
  57
  58struct dmxdev_feed {
  59        u16 pid;
  60        struct dmx_ts_feed *ts;
  61        struct list_head next;
  62};
  63
  64struct dmxdev_filter {
  65        union {
  66                struct dmx_section_filter *sec;
  67        } filter;
  68
  69        union {
  70                /* list of TS and PES feeds (struct dmxdev_feed) */
  71                struct list_head ts;
  72                struct dmx_section_feed *sec;
  73        } feed;
  74
  75        union {
  76                struct dmx_sct_filter_params sec;
  77                struct dmx_pes_filter_params pes;
  78        } params;
  79
  80        enum dmxdev_type type;
  81        enum dmxdev_state state;
  82        struct dmxdev *dev;
  83        struct dvb_ringbuffer buffer;
  84
  85        struct mutex mutex;
  86
  87        /* only for sections */
  88        struct timer_list timer;
  89        int todo;
  90        u8 secheader[3];
  91};
  92
  93
  94struct dmxdev {
  95        struct dvb_device *dvbdev;
  96        struct dvb_device *dvr_dvbdev;
  97
  98        struct dmxdev_filter *filter;
  99        struct dmx_demux *demux;
 100
 101        int filternum;
 102        int capabilities;
 103
 104        unsigned int exit:1;
 105#define DMXDEV_CAP_DUPLEX 1
 106        struct dmx_frontend *dvr_orig_fe;
 107
 108        struct dvb_ringbuffer dvr_buffer;
 109#define DVR_BUFFER_SIZE (10*188*1024)
 110
 111        struct mutex mutex;
 112        spinlock_t lock;
 113};
 114
 115
 116int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
 117void dvb_dmxdev_release(struct dmxdev *dmxdev);
 118
 119#endif /* _DMXDEV_H_ */
 120