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Lucas A. M. Magalhãesadc589d2019-01-21 20:05:01 -05001/* 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
Helen Fornazier43e3b722019-03-06 17:42:42 -050018/**
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
Mauro Carvalho Chehabe671ed92020-04-14 12:09:12 +020023 * 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.
Helen Fornazier43e3b722019-03-06 17:42:42 -050027 * @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 */
Lucas A. M. Magalhãesadc589d2019-01-21 20:05:01 -050034struct vimc_stream {
35 struct media_pipeline pipe;
36 struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE];
37 unsigned int pipe_size;
Lucas A. M. Magalhãesadc589d2019-01-21 20:05:01 -050038 struct task_struct *kthread;
Lucas A. M. Magalhãesadc589d2019-01-21 20:05:01 -050039};
40
Lucas A. M. Magalhãesadc589d2019-01-21 20:05:01 -050041int vimc_streamer_s_stream(struct vimc_stream *stream,
42 struct vimc_ent_device *ved,
43 int enable);
44
45#endif //_VIMC_STREAMER_H_