1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
2 | /* |
3 | * vimc-streamer.h Virtual Media Controller Driver |
4 | * |
5 | * Copyright (C) 2018 Lucas A. M. Magalhães <lucmaga@gmail.com> |
6 | * |
7 | */ |
8 | |
9 | #ifndef _VIMC_STREAMER_H_ |
10 | #define _VIMC_STREAMER_H_ |
11 | |
12 | #include <media/media-device.h> |
13 | |
14 | #include "vimc-common.h" |
15 | |
16 | #define VIMC_STREAMER_PIPELINE_MAX_SIZE 16 |
17 | |
18 | /** |
19 | * struct vimc_stream - struct that represents a stream in the pipeline |
20 | * |
21 | * @pipe: the media pipeline object associated with this stream |
22 | * @ved_pipeline: array containing all the entities participating in the |
23 | * stream. The order is from a video device (usually a |
24 | * capture device) where stream_on was called, to the |
25 | * entity generating the first base image to be |
26 | * processed in the pipeline. |
27 | * @pipe_size: size of @ved_pipeline |
28 | * @kthread: thread that generates the frames of the stream. |
29 | * |
30 | * When the user call stream_on in a video device, struct vimc_stream is |
31 | * used to keep track of all entities and subdevices that generates and |
32 | * process frames for the stream. |
33 | */ |
34 | struct vimc_stream { |
35 | struct media_pipeline pipe; |
36 | struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE]; |
37 | unsigned int pipe_size; |
38 | struct task_struct *kthread; |
39 | }; |
40 | |
41 | int vimc_streamer_s_stream(struct vimc_stream *stream, |
42 | struct vimc_ent_device *ved, |
43 | int enable); |
44 | |
45 | #endif //_VIMC_STREAMER_H_ |
46 | |