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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021, Google Inc.
* Copyright (C) 2024 Red Hat Inc.
*
* Software ISP IPA Context
*/
#include "ipa_context.h"
/**
* \file ipa_context.h
* \brief Context and state information shared between the algorithms
*/
namespace libcamera::ipa::soft {
/**
* \struct IPASessionConfiguration
* \brief Session configuration for the IPA module
*
* The session configuration contains all IPA configuration parameters that
* remain constant during the capture session, from IPA module start to stop.
* It is typically set during the configure() operation of the IPA module, but
* may also be updated in the start() operation.
*/
/**
* \struct IPAActiveState
* \brief The active state of the IPA algorithms
*
* The IPA is fed with the statistics generated from the latest frame processed.
* The statistics are then processed by the IPA algorithms to compute parameters
* required for the next frame capture and processing. The current state of the
* algorithms is reflected through the IPAActiveState to store the values most
* recently computed by the IPA algorithms.
*/
/**
* \struct IPAContext
* \brief Global IPA context data shared between all algorithms
*
* \var IPAContext::configuration
* \brief The IPA session configuration, immutable during the session
*
* \var IPAContext::frameContexts
* \brief Ring buffer of the IPAFrameContext(s)
*
* \var IPAContext::activeState
* \brief The current state of IPA algorithms
*/
/**
* \var IPASessionConfiguration::gamma
* \brief Gamma value to be used in the raw image processing
*/
/**
* \var IPAActiveState::black
* \brief Context for the Black Level algorithm
*
* \var IPAActiveState::black.level
* \brief Current determined black level
*/
/**
* \var IPAActiveState::gains
* \brief Context for gains in the Colors algorithm
*
* \var IPAActiveState::gains.red
* \brief Gain of red color
*
* \var IPAActiveState::gains.green
* \brief Gain of green color
*
* \var IPAActiveState::gains.blue
* \brief Gain of blue color
*/
/**
* \var IPAActiveState::agc
* \brief Context for the AGC algorithm
*
* \var IPAActiveState::agc.exposure
* \brief Current exposure value
*
* \var IPAActiveState::agc.again
* \brief Current analog gain value
*/
/**
* \var IPAActiveState::gamma
* \brief Context for gamma in the Colors algorithm
*
* \var IPAActiveState::gamma.gammaTable
* \brief Computed gamma table
*
* \var IPAActiveState::gamma.blackLevel
* \brief Black level used for the gamma table computation
*/
} /* namespace libcamera::ipa::soft */
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