/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2021-2022, Ideas On Board
*
* cproc.cpp - RkISP1 Color Processing control
*/
#include "cproc.h"
#include <algorithm>
#include <cmath>
#include <libcamera/base/log.h>
#include <libcamera/control_ids.h>
/**
* \file cproc.h
*/
namespace libcamera {
namespace ipa::rkisp1::algorithms {
/**
* \class ColorProcessing
* \brief RkISP1 Color Processing control
*
* The ColorProcessing algorithm is responsible for applying brightness,
* contrast and saturation corrections. The values are directly provided
* through requests by the corresponding controls.
*/
LOG_DEFINE_CATEGORY(RkISP1CProc)
/**
* \copydoc libcamera::ipa::Algorithm::queueRequest
*/
void ColorProcessing::queueRequest(IPAContext &context,
[[maybe_unused]] const uint32_t frame,
IPAFrameContext &frameContext,
const ControlList &controls)
{
auto &cproc = context.activeState.cproc;
bool update = false;
const auto &brightness = controls.get(controls::Brightness);
if (brightness) {
int value = std::clamp<int>(std::lround(*brightness * 128), -128, 127);
if (cproc.brightness != value) {
cproc.brightness = value;
update = true;
}
LOG(RkISP1CProc, Debug) << "Set brightness to " << value;
}
const auto &contrast = controls.get(controls::Contrast);
if (contrast) {
int value = std::clamp<int>(std::lround(*contrast * 128), 0, 255);
if (cproc.contrast != value) {
cproc.contrast = value;
update = true;
}
LOG(RkISP1CProc, Debug) << "Set contrast to " << value;
}
const auto saturation = controls.get(controls::Saturation);
if (saturation) {
int value = std::clamp<int>(std::lround(*saturation * 128), 0, 255);
if (cproc.saturation != value) {
cproc.saturation = value;
update = true;
}
LOG(RkISP1CProc, Debug) << "Set saturation to " << value;
}
frameContext.cproc.brightness = cproc.brightness;
frameContext.cproc.contrast = cproc.contrast;
frameContext.cproc.saturation = cproc.saturation;
frameContext.cproc.update = update;
}
/**
* \copydoc libcamera::ipa::Algorithm::prepare
*/
void ColorProcessing::prepare([[maybe_unused]] IPAContext &context,
[[maybe_unused]] const uint32_t frame,
IPAFrameContext &frameContext,
rkisp1_params_cfg *params)
{
/* Check if the algorithm configuration has been updated. */
if (!frameContext.cproc.update)
return;
params->others.cproc_config.brightness = frameContext.cproc.brightness;
params->others.cproc_config.contrast = frameContext.cproc.contrast;
params->others.cproc_config.sat = frameContext.cproc.saturation;
params->module_en_update |= RKISP1_CIF_ISP_MODULE_CPROC;
params->module_ens |= RKISP1_CIF_ISP_MODULE_CPROC;
params->module_cfg_update |= RKISP1_CIF_ISP_MODULE_CPROC;
}
REGISTER_IPA_ALGORITHM(ColorProcessing, "ColorProcessing")
} /* namespace ipa::rkisp1::algorithms */
} /* namespace libcamera */
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