LXR linux/drivers/media/pci/cx18/cx18-streams.h

   1/*
   2 *  cx18 init/start/stop/exit stream functions
   3 *
   4 *  Derived from ivtv-streams.h
   5 *
   6 *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
   7 *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
   8 *
   9 *  This program is free software; you can redistribute it and/or modify
  10 *  it under the terms of the GNU General Public License as published by
  11 *  the Free Software Foundation; either version 2 of the License, or
  12 *  (at your option) any later version.
  13 *
  14 *  This program is distributed in the hope that it will be useful,
  15 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 *  GNU General Public License for more details.
  18 *
  19 *  You should have received a copy of the GNU General Public License
  20 *  along with this program; if not, write to the Free Software
  21 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  22 *  02111-1307  USA
  23 */
  24
  25u32 cx18_find_handle(struct cx18 *cx);
  26struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
  27int cx18_streams_setup(struct cx18 *cx);
  28int cx18_streams_register(struct cx18 *cx);
  29void cx18_streams_cleanup(struct cx18 *cx, int unregister);
  30
  31#define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3)
  32void cx18_stream_rotate_idx_mdls(struct cx18 *cx);
  33
  34static inline bool cx18_stream_enabled(struct cx18_stream *s)
  35{
  36        return s->video_dev.v4l2_dev ||
  37               (s->dvb && s->dvb->enabled) ||
  38               (s->type == CX18_ENC_STREAM_TYPE_IDX &&
  39                s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
  40}
  41
  42/* Related to submission of mdls to firmware */
  43static inline void cx18_stream_load_fw_queue(struct cx18_stream *s)
  44{
  45        schedule_work(&s->out_work_order);
  46}
  47
  48static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s,
  49                                          struct cx18_mdl *mdl)
  50{
  51        /* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */
  52        cx18_enqueue(s, mdl, &s->q_free);
  53        cx18_stream_load_fw_queue(s);
  54}
  55
  56void cx18_out_work_handler(struct work_struct *work);
  57
  58/* Capture related */
  59int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
  60int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
  61
  62void cx18_stop_all_captures(struct cx18 *cx);
  63