1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3  *  cx18 init/start/stop/exit stream functions
4  *
5  *  Derived from ivtv-streams.h
6  *
7  *  Copyright (C) 2007  Hans Verkuil <hverkuil@xs4all.nl>
8  *  Copyright (C) 2008  Andy Walls <awalls@md.metrocast.net>
9  */
10 
11 u32 cx18_find_handle(struct cx18 *cx);
12 struct cx18_stream *cx18_handle_to_stream(struct cx18 *cx, u32 handle);
13 int cx18_streams_setup(struct cx18 *cx);
14 int cx18_streams_register(struct cx18 *cx);
15 void cx18_streams_cleanup(struct cx18 *cx, int unregister);
16 
17 #define CX18_ENC_STREAM_TYPE_IDX_FW_MDL_MIN (3)
18 void cx18_stream_rotate_idx_mdls(struct cx18 *cx);
19 
cx18_stream_enabled(struct cx18_stream * s)20 static inline bool cx18_stream_enabled(struct cx18_stream *s)
21 {
22 	return s->video_dev.v4l2_dev ||
23 	       (s->dvb && s->dvb->enabled) ||
24 	       (s->type == CX18_ENC_STREAM_TYPE_IDX &&
25 		s->cx->stream_buffers[CX18_ENC_STREAM_TYPE_IDX] != 0);
26 }
27 
28 /* Related to submission of mdls to firmware */
cx18_stream_load_fw_queue(struct cx18_stream * s)29 static inline void cx18_stream_load_fw_queue(struct cx18_stream *s)
30 {
31 	schedule_work(&s->out_work_order);
32 }
33 
cx18_stream_put_mdl_fw(struct cx18_stream * s,struct cx18_mdl * mdl)34 static inline void cx18_stream_put_mdl_fw(struct cx18_stream *s,
35 					  struct cx18_mdl *mdl)
36 {
37 	/* Put mdl on q_free; the out work handler will move mdl(s) to q_busy */
38 	cx18_enqueue(s, mdl, &s->q_free);
39 	cx18_stream_load_fw_queue(s);
40 }
41 
42 void cx18_out_work_handler(struct work_struct *work);
43 
44 /* Capture related */
45 int cx18_start_v4l2_encode_stream(struct cx18_stream *s);
46 int cx18_stop_v4l2_encode_stream(struct cx18_stream *s, int gop_end);
47 
48 void cx18_stop_all_captures(struct cx18 *cx);
49