libcamera::ipa::ipu3::algorithms::ToneMapping Class Reference

A class to handle tone mapping based on gamma. More...

Inheritance diagram for libcamera::ipa::ipu3::algorithms::ToneMapping:

Collaboration diagram for libcamera::ipa::ipu3::algorithms::ToneMapping:

Public Member Functions
int	configure (IPAContext &context, const IPAConfigInfo &configInfo) override
	Configure the tone mapping given a configInfo. More...
void	prepare (IPAContext &context, ipu3_uapi_params *params) override
	Fill in the parameter structure, and enable gamma control. More...
void	process (IPAContext &context, IPAFrameContext *frameContext, const ipu3_uapi_stats_3a *stats) override
	Calculate the tone mapping look up table. More...
Public Member Functions inherited from libcamera::ipa::Algorithm< _Module >
virtual int	init ([[maybe_unused]] typename Module::Context &context, [[maybe_unused]] const YamlObject &tuningData)
	Initialize the Algorithm with tuning data. More...
virtual int	configure ([[maybe_unused]] typename Module::Context &context, [[maybe_unused]] const typename Module::Config &configInfo)
	Configure the Algorithm given an IPAConfigInfo. More...
virtual void	prepare ([[maybe_unused]] typename Module::Context &context, [[maybe_unused]] typename Module::Params *params)
	Fill the params buffer with ISP processing parameters for a frame. More...
virtual void	queueRequest ([[maybe_unused]] typename Module::Context &context, [[maybe_unused]] const uint32_t frame, [[maybe_unused]] const ControlList &controls)
	Provide control values to the algorithm. More...
virtual void	process ([[maybe_unused]] typename Module::Context &context, [[maybe_unused]] typename Module::FrameContext *frameContext, [[maybe_unused]] const typename Module::Stats *stats)
	Process ISP statistics, and run algorithm operations. More...

Additional Inherited Members
Public Types inherited from libcamera::ipa::Algorithm< _Module >
using	Module = _Module
	The IPA module type for this class of algorithms.

Detailed Description

A class to handle tone mapping based on gamma.

This algorithm improves the image dynamic using a look-up table which is generated based on a gamma parameter.

Member Function Documentation

configure()

int libcamera::ipa::ipu3::algorithms::ToneMapping::configure ( IPAContext &  context, const IPAConfigInfo &  configInfo  )

override

Configure the tone mapping given a configInfo.

Parameters

[in]	context	The shared IPA context
[in]	configInfo	The IPA configuration data

Returns

0

prepare()

void libcamera::ipa::ipu3::algorithms::ToneMapping::prepare ( IPAContext &  context, ipu3_uapi_params *  params  )

override

Fill in the parameter structure, and enable gamma control.

Parameters

context	The shared IPA context
params	The IPU3 parameters

Populate the IPU3 parameter structure with our tone mapping look up table and enable the gamma control module in the processing blocks.

process()

void libcamera::ipa::ipu3::algorithms::ToneMapping::process ( IPAContext &  context, IPAFrameContext *  frameContext, const ipu3_uapi_stats_3a *  stats  )

override

Calculate the tone mapping look up table.

Parameters

context	The shared IPA context
frameContext	The current frame context
stats	The IPU3 statistics and ISP results

The tone mapping look up table is generated as an inverse power curve from our gamma setting.

---

The documentation for this class was generated from the following files:

• src/ipa/ipu3/algorithms/tone_mapping.h
• src/ipa/ipu3/algorithms/tone_mapping.cpp