blob: 59b4b9843c2f3d73b98982a34a5793a3fef66a0c (
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
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Ideas On Board
*
* agc.h - IPU3 AGC/AEC mean-based control algorithm
*/
#pragma once
#include <linux/intel-ipu3.h>
#include <libcamera/base/utils.h>
#include <libcamera/geometry.h>
#include "algorithm.h"
namespace libcamera {
struct IPACameraSensorInfo;
namespace ipa::ipu3::algorithms {
class Agc : public Algorithm
{
public:
Agc();
~Agc() = default;
int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
void process(IPAContext &context, const uint32_t frame,
IPAFrameContext &frameContext,
const ipu3_uapi_stats_3a *stats) override;
private:
double measureBrightness(const ipu3_uapi_stats_3a *stats,
const ipu3_uapi_grid_config &grid) const;
utils::Duration filterExposure(utils::Duration currentExposure);
void computeExposure(IPAContext &context, IPAFrameContext &frameContext,
double yGain, double iqMeanGain);
double estimateLuminance(IPAActiveState &activeState,
const ipu3_uapi_grid_config &grid,
const ipu3_uapi_stats_3a *stats,
double gain);
uint64_t frameCount_;
utils::Duration minShutterSpeed_;
utils::Duration maxShutterSpeed_;
double minAnalogueGain_;
double maxAnalogueGain_;
utils::Duration filteredExposure_;
uint32_t stride_;
};
} /* namespace ipa::ipu3::algorithms */
} /* namespace libcamera */
|
