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 
20 u32 cx18_find_handle(struct cx18 *cx);
21 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
22 int cx18_streams_setup(struct cx18 *cx);
23 int cx18_streams_register(struct cx18 *cx);
24 void cx18_streams_cleanup(struct cx18 *cx, int unregister);
25 
26 #define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3)
27 void cx18_stream_rotate_idx_mdls(struct cx18 *cx);
28 
29 static inline bool cx18_stream_enabled(struct cx18_stream *s)
30 {
31 	return s->video_dev.v4l2_dev ||
32 	       (s->dvb && s->dvb->enabled) ||
33 	       (s->type == CX18_ENC_STREAM_TYPE_IDX &&
34 		s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
35 }
36 
37 /* Related to submission of mdls to firmware */
38 static inline void cx18_stream_load_fw_queue(struct cx18_stream *s)
39 {
40 	schedule_work(&s->out_work_order);
41 }
42 
43 static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s,
44 					  struct cx18_mdl *mdl)
45 {
46 	/* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */
47 	cx18_enqueue(s, mdl, &s->q_free);
48 	cx18_stream_load_fw_queue(s);
49 }
50 
51 void cx18_out_work_handler(struct work_struct *work);
52 
53 /* Capture related */
54 int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
55 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
56 
57 void cx18_stop_all_captures(struct cx18 *cx);
58