summaryrefslogtreecommitdiff
path: root/src/ipa/raspberrypi/controller/contrast_status.h
blob: d7edd4e9990d5d2816e4c6c627a2d96365e3551d (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
/* SPDX-License-Identifier: BSD-2-Clause */
/*
 * Copyright (C) 2019, Raspberry Pi (Trading) Limited
 *
 * contrast_status.h - contrast (gamma) control algorithm status
 */
#pragma once

// The "contrast" algorithm creates a gamma curve, optionally doing a little bit
// of contrast stretching based on the AGC histogram.

#ifdef __cplusplus
extern "C" {
#endif

#define CONTRAST_NUM_POINTS 33

struct ContrastPoint {
	uint16_t x;
	uint16_t y;
};

struct ContrastStatus {
	struct ContrastPoint points[CONTRAST_NUM_POINTS];
	double brightness;
	double contrast;
};

#ifdef __cplusplus
}
#endif