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 <asm/semaphore.h>
  34
  35 #include <linux/dvb/dmx.h>
  36
  37 #include "dvbdev.h"
  38 #include "demux.h"
  39
  40 enum dmxdevype {
  41         DMXDEV_TYPE_NONE,
  42         DMXDEV_TYPE_SEC,
  43         DMXDEV_TYPE_PES,
  44 };
  45
  46 enum dmxdev_state {
  47         DMXDEV_STATE_FREE,
  48         DMXDEV_STATE_ALLOCATED,
  49         DMXDEV_STATE_SET,
  50         DMXDEV_STATE_GO,
  51         DMXDEV_STATE_DONE,
  52         DMXDEV_STATE_TIMEDOUT
  53 };
  54
  55 struct dmxdev_buffer {
  56         u8 *data;
  57         int size;
  58         int pread;
  59         int pwrite;
  60         wait_queue_head_t queue;
  61         int error;
  62 };
  63
  64 struct dmxdev_filter {
  65         struct dvb_device *dvbdev;
  66
  67         union {
  68                 struct dmx_section_filter *sec;
  69         } filter;
  70
  71         union {
  72                 struct dmx_ts_feed *ts;
  73                 struct dmx_section_feed *sec;
  74         } feed;
  75
  76         union {
  77                 struct dmx_sct_filter_params sec;
  78                 struct dmx_pes_filter_params pes;
  79         } params;
  80
  81         int type;
  82         enum dmxdev_state state;
  83         struct dmxdev *dev;
  84         struct dmxdev_buffer buffer;
  85
  86         struct semaphore mutex;
  87
  88         /* only for sections */
  89         struct timer_list timer;
  90         int todo;
  91         u8 secheader[3];
  92
  93         u16 pid;
  94 };
  95
  96
  97 struct dmxdev_dvr {
  98         int state;
  99         struct dmxdev *dev;
 100         struct dmxdev_buffer buffer;
 101 };
 102
 103
 104 struct dmxdev {
 105         struct dvb_device *dvbdev;
 106         struct dvb_device *dvr_dvbdev;
 107
 108         struct dmxdev_filter *filter;
 109         struct dmxdev_dvr *dvr;
 110         struct dmx_demux *demux;
 111
 112         int filternum;
 113         int capabilities;
 114 #define DMXDEV_CAP_DUPLEX 1
 115         struct dmx_frontend *dvr_orig_fe;
 116
 117         struct dmxdev_buffer dvr_buffer;
 118 #define DVR_BUFFER_SIZE (10*188*1024)
 119
 120         struct semaphore mutex;
 121         spinlock_t lock;
 122 };
 123
 124
 125 int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
 126 void dvb_dmxdev_release(struct dmxdev *dmxdev);
 127
 128 #endif /* _DMXDEV_H_ */