linux/drivers/media/platform/renesas/vsp1/vsp1_histo.h

/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * vsp1_histo.h  --  R-Car VSP1 Histogram API
 *
 * Copyright (C) 2016 Renesas Electronics Corporation
 * Copyright (C) 2016 Laurent Pinchart
 *
 * Contact: Laurent Pinchart ([email protected])
 */
#ifndef __VSP1_HISTO_H__
#define __VSP1_HISTO_H__

#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/spinlock.h>

#include <media/media-entity.h>
#include <media/v4l2-dev.h>
#include <media/videobuf2-v4l2.h>

#include "vsp1_entity.h"

struct vsp1_device;

#define HISTO_PAD_SINK …
#define HISTO_PAD_SOURCE …

struct vsp1_histogram_buffer { … };

struct vsp1_histogram { … };

static inline struct vsp1_histogram *vdev_to_histo(struct video_device *vdev)
{ … }

static inline struct vsp1_histogram *subdev_to_histo(struct v4l2_subdev *subdev)
{ … }

int vsp1_histogram_init(struct vsp1_device *vsp1, struct vsp1_histogram *histo,
			enum vsp1_entity_type type, const char *name,
			const struct vsp1_entity_operations *ops,
			const unsigned int *formats, unsigned int num_formats,
			size_t data_size, u32 meta_format);
void vsp1_histogram_destroy(struct vsp1_entity *entity);

struct vsp1_histogram_buffer *
vsp1_histogram_buffer_get(struct vsp1_histogram *histo);
void vsp1_histogram_buffer_complete(struct vsp1_histogram *histo,
				    struct vsp1_histogram_buffer *buf,
				    size_t size);

#endif /* __VSP1_HISTO_H__ */