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kernel/linux-rt-4.4.41/drivers/media/pci/cx18/cx18-streams.h 2.14 KB
5113f6f70   김현기   kernel add
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  /*
   *  cx18 init/start/stop/exit stream functions
   *
   *  Derived from ivtv-streams.h
   *
   *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
   *
   *  This program is free software; you can redistribute it and/or modify
   *  it under the terms of the GNU General Public License as published by
   *  the Free Software Foundation; either version 2 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 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
   */
  
  u32 cx18_find_handle(struct cx18 *cx);
  struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
  int cx18_streams_setup(struct cx18 *cx);
  int cx18_streams_register(struct cx18 *cx);
  void cx18_streams_cleanup(struct cx18 *cx, int unregister);
  
  #define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3)
  void cx18_stream_rotate_idx_mdls(struct cx18 *cx);
  
  static inline bool cx18_stream_enabled(struct cx18_stream *s)
  {
  	return s->video_dev.v4l2_dev ||
  	       (s->dvb && s->dvb->enabled) ||
  	       (s->type == CX18_ENC_STREAM_TYPE_IDX &&
  		s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
  }
  
  /* Related to submission of mdls to firmware */
  static inline void cx18_stream_load_fw_queue(struct cx18_stream *s)
  {
  	schedule_work(&s->out_work_order);
  }
  
  static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s,
  					  struct cx18_mdl *mdl)
  {
  	/* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */
  	cx18_enqueue(s, mdl, &s->q_free);
  	cx18_stream_load_fw_queue(s);
  }
  
  void cx18_out_work_handler(struct work_struct *work);
  
  /* Capture related */
  int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
  int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
  
  void cx18_stop_all_captures(struct cx18 *cx);