libcamera v0.3.1
Supporting cameras in Linux since 2019
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agc.h
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1/* SPDX-License-Identifier: LGPL-2.1-or-later */
2/*
3 * Copyright (C) 2021, Ideas On Board
4 *
5 * IPU3 AGC/AEC mean-based control algorithm
6 */
7
8#pragma once
9
10#include <linux/intel-ipu3.h>
11
13
14#include <libcamera/geometry.h>
15
17#include "libipa/histogram.h"
18
19#include "algorithm.h"
20
21namespace libcamera {
22
23struct IPACameraSensorInfo;
24
25namespace ipa::ipu3::algorithms {
26
27class Agc : public Algorithm, public AgcMeanLuminance
28{
29public:
30 Agc();
31 ~Agc() = default;
32
33 int init(IPAContext &context, const YamlObject &tuningData) override;
34 int configure(IPAContext &context, const IPAConfigInfo &configInfo) override;
35 void process(IPAContext &context, const uint32_t frame,
36 IPAFrameContext &frameContext,
37 const ipu3_uapi_stats_3a *stats,
38 ControlList &metadata) override;
39
40private:
41 double estimateLuminance(double gain) const override;
42 Histogram parseStatistics(const ipu3_uapi_stats_3a *stats,
43 const ipu3_uapi_grid_config &grid);
44
45 utils::Duration minShutterSpeed_;
46 utils::Duration maxShutterSpeed_;
47
48 double minAnalogueGain_;
49 double maxAnalogueGain_;
50
51 uint32_t stride_;
52 double rGain_;
53 double gGain_;
54 double bGain_;
55 ipu3_uapi_grid_config bdsGrid_;
56 std::vector<std::tuple<uint8_t, uint8_t, uint8_t>> rgbTriples_;
57};
58
59} /* namespace ipa::ipu3::algorithms */
60
61} /* namespace libcamera */
Base class implementing mean luminance AEGC.
Associate a list of ControlId with their values for an object.
Definition controls.h:350
A class representing the tree structure of the YAML content.
Definition yaml_parser.h:26
A mean-based auto-exposure algorithm.
Definition agc_mean_luminance.h:29
The base class for all IPA algorithms.
Definition algorithm.h:23
The base class for creating histograms.
Definition histogram.h:24
A mean-based auto-exposure algorithm.
Definition agc.h:28
void process(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, const ipu3_uapi_stats_3a *stats, ControlList &metadata) override
Process IPU3 statistics, and run AGC operations.
Definition agc.cpp:206
int configure(IPAContext &context, const IPAConfigInfo &configInfo) override
Configure the AGC given a configInfo.
Definition agc.cpp:94
int init(IPAContext &context, const YamlObject &tuningData) override
Initialise the AGC algorithm from tuning files.
Definition agc.cpp:74
Helper class from std::chrono::duration that represents a time duration in nanoseconds with double pr...
Definition utils.h:354
Data structures related to geometric objects.
Class to represent Histograms and manipulate them.
Top-level libcamera namespace.
Definition backtrace.h:17
Global IPA context data shared between all algorithms.
Definition ipa_context.h:86
IPU3-specific FrameContext.
Definition ipa_context.h:79
Miscellaneous utility functions.