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, const uint32_t frame, IPAFrameContext &frameContext, ipu3_uapi_params *params) override
	Fill in the parameter structure, and enable gamma control. More...

void	process (IPAContext &context, const uint32_t frame, IPAFrameContext &frameContext, const ipu3_uapi_stats_3a *stats, ControlList &metadata) override
	Calculate the tone mapping look up table. More...

Public Member Functions inherited from libcamera::ipa::Algorithm< _Module >
virtual int	init (typename Module::Context &context, const YamlObject &tuningData)
	Initialize the Algorithm with tuning data. More...

virtual int	configure (typename Module::Context &context, const typename Module::Config &configInfo)
	Configure the Algorithm given an IPAConfigInfo. More...

virtual void	queueRequest (typename Module::Context &context, const uint32_t frame, typename Module::FrameContext &frameContext, const ControlList &controls)
	Provide control values to the algorithm. More...

virtual void	prepare (typename Module::Context &context, const uint32_t frame, typename Module::FrameContext &frameContext, typename Module::Params *params)
	Fill the params buffer with ISP processing parameters for a frame. More...

virtual void	process (typename Module::Context &context, const uint32_t frame, typename Module::FrameContext &frameContext, const typename Module::Stats *stats, ControlList &metadata)
	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,
		const uint32_t	frame,
		IPAFrameContext &	frameContext,
		ipu3_uapi_params *	params
	)

override

Fill in the parameter structure, and enable gamma control.

Parameters

[in]	context	The shared IPA context
[in]	frame	The frame context sequence number
[in]	frameContext	The FrameContext for this frame
[out]	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,
		const uint32_t	frame,
		IPAFrameContext &	frameContext,
		const ipu3_uapi_stats_3a *	stats,
		ControlList &	metadata
	)

override

Calculate the tone mapping look up table.

Parameters

[in]	context	The shared IPA context
[in]	frame	The current frame sequence number
[in]	frameContext	The current frame context
[in]	stats	The IPU3 statistics and ISP results
[out]	metadata	Metadata for the frame, to be filled by the algorithm

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

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ configure()

◆ prepare()

◆ process()