LXR linux/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
  41enum dmxdev_type {
  42        DMXDEV_TYPE_NONE,
  43        DMXDEV_TYPE_SEC,
  44        DMXDEV_TYPE_PES,
  45};
  46
  47enum 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
  56struct dmxdev_filter {
  57        union {
  58                struct dmx_section_filter *sec;
  59        } filter;
  60
  61        union {
  62                struct dmx_ts_feed *ts;
  63                struct dmx_section_feed *sec;
  64        } feed;
  65
  66        union {
  67                struct dmx_sct_filter_params sec;
  68                struct dmx_pes_filter_params pes;
  69        } params;
  70
  71        enum dmxdev_type type;
  72        enum dmxdev_state state;
  73        struct dmxdev *dev;
  74        struct dvb_ringbuffer buffer;
  75
  76        struct mutex mutex;
  77
  78        /* only for sections */
  79        struct timer_list timer;
  80        int todo;
  81        u8 secheader[3];
  82};
  83
  84
  85struct dmxdev {
  86        struct dvb_device *dvbdev;
  87        struct dvb_device *dvr_dvbdev;
  88
  89        struct dmxdev_filter *filter;
  90        struct dmx_demux *demux;
  91
  92        int filternum;
  93        int capabilities;
  94
  95        unsigned int exit:1;
  96#define DMXDEV_CAP_DUPLEX 1
  97        struct dmx_frontend *dvr_orig_fe;
  98
  99        struct dvb_ringbuffer dvr_buffer;
 100#define DVR_BUFFER_SIZE (10*188*1024)
 101
 102        struct mutex mutex;
 103        spinlock_t lock;
 104};
 105
 106
 107int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
 108void dvb_dmxdev_release(struct dmxdev *dmxdev);
 109
 110#endif /* _DMXDEV_H_ */
 111