adc589d2a2
Add a linear pipeline logic for the stream control. It's created by
walking backwards on the entity graph. When the stream starts it will
simply loop through the pipeline calling the respective process_frame
function of each entity.
Fixes: f2fe89061d797 ("vimc: Virtual Media Controller core, capture
and sensor")
Cc: stable@vger.kernel.org # for v4.20
Signed-off-by: Lucas A. M. Magalhães <lucmaga@gmail.com>
Acked-by: Helen Koike <helen.koike@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
[hverkuil-cisco@xs4all.nl: fixed small space-after-tab issue in the patch]
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
39 lines
888 B
C
39 lines
888 B
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* vimc-streamer.h Virtual Media Controller Driver
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*
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* Copyright (C) 2018 Lucas A. M. Magalhães <lucmaga@gmail.com>
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*
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*/
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#ifndef _VIMC_STREAMER_H_
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#define _VIMC_STREAMER_H_
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#include <media/media-device.h>
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#include "vimc-common.h"
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#define VIMC_STREAMER_PIPELINE_MAX_SIZE 16
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struct vimc_stream {
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struct media_pipeline pipe;
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struct vimc_ent_device *ved_pipeline[VIMC_STREAMER_PIPELINE_MAX_SIZE];
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unsigned int pipe_size;
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u8 *frame;
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struct task_struct *kthread;
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};
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/**
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* vimc_streamer_s_streamer - start/stop the stream
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*
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* @stream: the pointer to the stream to start or stop
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* @ved: The last entity of the streamer pipeline
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* @enable: any non-zero number start the stream, zero stop
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*
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*/
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int vimc_streamer_s_stream(struct vimc_stream *stream,
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struct vimc_ent_device *ved,
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int enable);
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#endif //_VIMC_STREAMER_H_
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