1/* SPDX-License-Identifier: GPL-2.0+ */
2/*
3 * vimc-streamer.h Virtual Media Controller Driver
4 *
5 * Copyright (C) 2018 Lucas A. M. Magalh��es <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 */
34struct 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
41int vimc_streamer_s_stream(struct vimc_stream *stream,
42			   struct vimc_ent_device *ved,
43			   int enable);
44
45#endif  //_VIMC_STREAMER_H_
46