12#include <linux/intel-ipu3.h>
20namespace ipa::ipu3::algorithms {
23static constexpr uint32_t kAwbStatsSizeX = 16;
24static constexpr uint32_t kAwbStatsSizeY = 12;
44 ipu3_uapi_params *params)
override;
47 const ipu3_uapi_stats_3a *stats,
53 RGB(
double _R = 0,
double _G = 0,
double _B = 0)
58 RGB &operator+=(RGB
const &other)
60 R += other.R, G += other.G, B += other.B;
73 void calculateWBGains(
const ipu3_uapi_stats_3a *stats);
75 void generateAwbStats(
const ipu3_uapi_stats_3a *stats);
78 uint32_t estimateCCT(
double red,
double green,
double blue);
79 static constexpr uint16_t threshold(
float value);
80 static constexpr uint16_t gainValue(
double gain);
82 std::vector<RGB> zones_;
83 Accumulator awbStats_[kAwbStatsSizeX * kAwbStatsSizeY];
84 AwbStatus asyncResults_;
87 uint32_t cellsPerZoneX_;
88 uint32_t cellsPerZoneY_;
89 uint32_t cellsPerZoneThreshold_;
Associate a list of ControlId with their values for an object.
Definition controls.h:350
The base class for all IPA algorithms.
Definition algorithm.h:23
A Grey world white balance correction algorithm.
Definition awb.h:36
int configure(IPAContext &context, const IPAConfigInfo &configInfo) override
Configure the Algorithm given an IPAConfigInfo.
Definition awb.cpp:201
void prepare(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, ipu3_uapi_params *params) override
Fill the params buffer with ISP processing parameters for a frame.
Definition awb.cpp:247
void process(IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, const ipu3_uapi_stats_3a *stats, ControlList &metadata) override
Process ISP statistics, and run algorithm operations.
Definition awb.cpp:475
Data structures related to geometric objects.
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
RGB statistics for a given zone.
Definition awb.h:26
uint64_t red
Sum of the average red values of each unsaturated cell in the zone.
Definition awb.h:29
uint64_t blue
Sum of the average blue values of each unsaturated cell in the zone.
Definition awb.h:31
unsigned int counted
Number of unsaturated cells used to calculate the sums.
Definition awb.h:27
struct libcamera::ipa::ipu3::algorithms::Accumulator::@4 sum
A structure containing the average red, green and blue sums.
uint64_t green
Sum of the average green values of each unsaturated cell in the zone.
Definition awb.h:30