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kernel/linux-rt-4.4.41/drivers/media/dvb-core/dmxdev.h 2.53 KB
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  /*
   * dmxdev.h
   *
   * Copyright (C) 2000 Ralph Metzler & Marcus Metzler
   *                    for convergence integrated media GmbH
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public License
   * as published by the Free Software Foundation; either version 2.1
   * of the License, or (at your option) any later version.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
   *
   */
  
  #ifndef _DMXDEV_H_
  #define _DMXDEV_H_
  
  #include <linux/types.h>
  #include <linux/spinlock.h>
  #include <linux/kernel.h>
  #include <linux/time.h>
  #include <linux/timer.h>
  #include <linux/wait.h>
  #include <linux/fs.h>
  #include <linux/string.h>
  #include <linux/mutex.h>
  #include <linux/slab.h>
  
  #include <linux/dvb/dmx.h>
  
  #include "dvbdev.h"
  #include "demux.h"
  #include "dvb_ringbuffer.h"
  
  enum dmxdev_type {
  	DMXDEV_TYPE_NONE,
  	DMXDEV_TYPE_SEC,
  	DMXDEV_TYPE_PES,
  };
  
  enum dmxdev_state {
  	DMXDEV_STATE_FREE,
  	DMXDEV_STATE_ALLOCATED,
  	DMXDEV_STATE_SET,
  	DMXDEV_STATE_GO,
  	DMXDEV_STATE_DONE,
  	DMXDEV_STATE_TIMEDOUT
  };
  
  struct dmxdev_feed {
  	u16 pid;
  	struct dmx_ts_feed *ts;
  	struct list_head next;
  };
  
  struct dmxdev_filter {
  	union {
  		struct dmx_section_filter *sec;
  	} filter;
  
  	union {
  		/* list of TS and PES feeds (struct dmxdev_feed) */
  		struct list_head ts;
  		struct dmx_section_feed *sec;
  	} feed;
  
  	union {
  		struct dmx_sct_filter_params sec;
  		struct dmx_pes_filter_params pes;
  	} params;
  
  	enum dmxdev_type type;
  	enum dmxdev_state state;
  	struct dmxdev *dev;
  	struct dvb_ringbuffer buffer;
  
  	struct mutex mutex;
  
  	/* only for sections */
  	struct timer_list timer;
  	int todo;
  	u8 secheader[3];
  };
  
  
  struct dmxdev {
  	struct dvb_device *dvbdev;
  	struct dvb_device *dvr_dvbdev;
  
  	struct dmxdev_filter *filter;
  	struct dmx_demux *demux;
  
  	int filternum;
  	int capabilities;
  
  	unsigned int exit:1;
  #define DMXDEV_CAP_DUPLEX 1
  	struct dmx_frontend *dvr_orig_fe;
  
  	struct dvb_ringbuffer dvr_buffer;
  #define DVR_BUFFER_SIZE (10*188*1024)
  
  	struct mutex mutex;
  	spinlock_t lock;
  };
  
  
  int dvb_dmxdev_init(struct dmxdev *dmxdev, struct dvb_adapter *);
  void dvb_dmxdev_release(struct dmxdev *dmxdev);
  
  #endif /* _DMXDEV_H_ */