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
  39 enum dmxdev_type {
  40         DMXDEV_TYPE_NONE,
  41         DMXDEV_TYPE_SEC,
  42         DMXDEV_TYPE_PES,
  43 };
  44
  45 enum 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
  54 struct dmxdev_feed {
  55         u16 pid;
  56         struct dmx_ts_feed *ts;
  57         struct list_head next;
  58 };
  59
  60 struct 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
  90 struct 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
 112 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
 113 void dvb_dmxdev_release(struct dmxdev *dmxdev);
 114
 115 #endif /* _DMXDEV_H_ */