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