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 */
  18
  19#ifndef _DMXDEV_H_
  20#define _DMXDEV_H_
  21
  22#include <linux/types.h>
  23#include <linux/spinlock.h>
  24#include <linux/kernel.h>
  25#include <linux/time.h>
  26#include <linux/timer.h>
  27#include <linux/wait.h>
  28#include <linux/fs.h>
  29#include <linux/string.h>
  30#include <linux/mutex.h>
  31#include <linux/slab.h>
  32
  33#include <linux/dvb/dmx.h>
  34
  35#include "dvbdev.h"
  36#include "demux.h"
  37#include "dvb_ringbuffer.h"
  38
  39enum dmxdev_type {
  40        DMXDEV_TYPE_NONE,
  41        DMXDEV_TYPE_SEC,
  42        DMXDEV_TYPE_PES,
  43};
  44
  45enum dmxdev_state {
  46        DMXDEV_STATE_FREE,
  47        DMXDEV_STATE_ALLOCATED,
  48        DMXDEV_STATE_SET,
  49        DMXDEV_STATE_GO,
  50        DMXDEV_STATE_DONE,
  51        DMXDEV_STATE_TIMEDOUT
  52};
  53
  54struct dmxdev_feed {
  55        u16 pid;
  56        struct dmx_ts_feed *ts;
  57        struct list_head next;
  58};
  59
  60struct dmxdev_filter {
  61        union {
  62                struct dmx_section_filter *sec;
  63        } filter;
  64
  65        union {
  66                /* list of TS and PES feeds (struct dmxdev_feed) */
  67                struct list_head ts;
  68                struct dmx_section_feed *sec;
  69        } feed;
  70
  71        union {
  72                struct dmx_sct_filter_params sec;
  73                struct dmx_pes_filter_params pes;
  74        } params;
  75
  76        enum dmxdev_type type;
  77        enum dmxdev_state state;
  78        struct dmxdev *dev;
  79        struct dvb_ringbuffer buffer;
  80
  81        struct mutex mutex;
  82
  83        /* only for sections */
  84        struct timer_list timer;
  85        int todo;
  86        u8 secheader[3];
  87};
  88
  89
  90struct dmxdev {
  91        struct dvb_device *dvbdev;
  92        struct dvb_device *dvr_dvbdev;
  93
  94        struct dmxdev_filter *filter;
  95        struct dmx_demux *demux;
  96
  97        int filternum;
  98        int capabilities;
  99
 100        unsigned int exit:1;
 101#define DMXDEV_CAP_DUPLEX 1
 102        struct dmx_frontend *dvr_orig_fe;
 103
 104        struct dvb_ringbuffer dvr_buffer;
 105#define DVR_BUFFER_SIZE (10*188*1024)
 106
 107        struct mutex mutex;
 108        spinlock_t lock;
 109};
 110
 111
 112int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
 113void dvb_dmxdev_release(struct dmxdev *dmxdev);
 114
 115#endif /* _DMXDEV_H_ */
 116