diff options
Diffstat (limited to 'src/ipa/rpi/controller/rpi/denoise.cpp')
| -rw-r--r-- | src/ipa/rpi/controller/rpi/denoise.cpp | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/src/ipa/rpi/controller/rpi/denoise.cpp b/src/ipa/rpi/controller/rpi/denoise.cpp new file mode 100644 index 00000000..154ee604 --- /dev/null +++ b/src/ipa/rpi/controller/rpi/denoise.cpp @@ -0,0 +1,198 @@ +/* SPDX-License-Identifier: BSD-2-Clause */ +/* + * Copyright (C) 2022 Raspberry Pi Ltd + * + * Denoise.cpp - Denoise (spatial, colour, temporal) control algorithm + */ +#include "denoise.h" + +#include <libcamera/base/log.h> + +#include "denoise_status.h" +#include "noise_status.h" + +using namespace RPiController; +using namespace libcamera; + +LOG_DEFINE_CATEGORY(RPiDenoise) + +// Calculate settings for the denoise blocks using the noise profile in +// the image metadata. + +#define NAME "rpi.denoise" + +int DenoiseConfig::read(const libcamera::YamlObject ¶ms) +{ + sdnEnable = params.contains("sdn"); + if (sdnEnable) { + auto &sdnParams = params["sdn"]; + sdnDeviation = sdnParams["deviation"].get<double>(3.2); + sdnStrength = sdnParams["strength"].get<double>(0.25); + sdnDeviation2 = sdnParams["deviation2"].get<double>(sdnDeviation); + sdnDeviationNoTdn = sdnParams["deviation_no_tdn"].get<double>(sdnDeviation); + sdnStrengthNoTdn = sdnParams["strength_no_tdn"].get<double>(sdnStrength); + sdnTdnBackoff = sdnParams["backoff"].get<double>(0.75); + } + + cdnEnable = params.contains("cdn"); + if (cdnEnable) { + auto &cdnParams = params["cdn"]; + cdnDeviation = cdnParams["deviation"].get<double>(120); + cdnStrength = cdnParams["strength"].get<double>(0.2); + } + + tdnEnable = params.contains("tdn"); + if (tdnEnable) { + auto &tdnParams = params["tdn"]; + tdnDeviation = tdnParams["deviation"].get<double>(0.5); + tdnThreshold = tdnParams["threshold"].get<double>(0.75); + } else if (sdnEnable) { + /* + * If SDN is enabled but TDN isn't, overwrite all the SDN settings + * with the "no TDN" versions. This makes it easier to enable or + * disable TDN in the tuning file without editing all the other + * parameters. + */ + sdnDeviation = sdnDeviation2 = sdnDeviationNoTdn; + sdnStrength = sdnStrengthNoTdn; + } + + return 0; +} + +Denoise::Denoise(Controller *controller) + : DenoiseAlgorithm(controller), mode_(DenoiseMode::ColourHighQuality) +{ +} + +char const *Denoise::name() const +{ + return NAME; +} + +int Denoise::read(const libcamera::YamlObject ¶ms) +{ + if (!params.contains("normal")) { + configs_["normal"].read(params); + currentConfig_ = &configs_["normal"]; + + return 0; + } + + for (const auto &[key, value] : params.asDict()) { + if (configs_[key].read(value)) { + LOG(RPiDenoise, Error) << "Failed to read denoise config " << key; + return -EINVAL; + } + } + + auto it = configs_.find("normal"); + if (it == configs_.end()) { + LOG(RPiDenoise, Error) << "No normal denoise settings found"; + return -EINVAL; + } + currentConfig_ = &it->second; + + return 0; +} + +void Denoise::initialise() +{ +} + +void Denoise::switchMode([[maybe_unused]] CameraMode const &cameraMode, + [[maybe_unused]] Metadata *metadata) +{ + /* A mode switch effectively resets temporal denoise and it has to start over. */ + currentSdnDeviation_ = currentConfig_->sdnDeviationNoTdn; + currentSdnStrength_ = currentConfig_->sdnStrengthNoTdn; + currentSdnDeviation2_ = currentConfig_->sdnDeviationNoTdn; +} + +void Denoise::prepare(Metadata *imageMetadata) +{ + struct NoiseStatus noiseStatus = {}; + noiseStatus.noiseSlope = 3.0; // in case no metadata + if (imageMetadata->get("noise.status", noiseStatus) != 0) + LOG(RPiDenoise, Warning) << "no noise profile found"; + + LOG(RPiDenoise, Debug) + << "Noise profile: constant " << noiseStatus.noiseConstant + << " slope " << noiseStatus.noiseSlope; + + if (mode_ == DenoiseMode::Off) + return; + + if (currentConfig_->sdnEnable) { + struct SdnStatus sdn; + sdn.noiseConstant = noiseStatus.noiseConstant * currentSdnDeviation_; + sdn.noiseSlope = noiseStatus.noiseSlope * currentSdnDeviation_; + sdn.noiseConstant2 = noiseStatus.noiseConstant * currentConfig_->sdnDeviation2; + sdn.noiseSlope2 = noiseStatus.noiseSlope * currentSdnDeviation2_; + sdn.strength = currentSdnStrength_; + imageMetadata->set("sdn.status", sdn); + LOG(RPiDenoise, Debug) + << "const " << sdn.noiseConstant + << " slope " << sdn.noiseSlope + << " str " << sdn.strength + << " const2 " << sdn.noiseConstant2 + << " slope2 " << sdn.noiseSlope2; + + /* For the next frame, we back off the SDN parameters as TDN ramps up. */ + double f = currentConfig_->sdnTdnBackoff; + currentSdnDeviation_ = f * currentSdnDeviation_ + (1 - f) * currentConfig_->sdnDeviation; + currentSdnStrength_ = f * currentSdnStrength_ + (1 - f) * currentConfig_->sdnStrength; + currentSdnDeviation2_ = f * currentSdnDeviation2_ + (1 - f) * currentConfig_->sdnDeviation2; + } + + if (currentConfig_->tdnEnable) { + struct TdnStatus tdn; + tdn.noiseConstant = noiseStatus.noiseConstant * currentConfig_->tdnDeviation; + tdn.noiseSlope = noiseStatus.noiseSlope * currentConfig_->tdnDeviation; + tdn.threshold = currentConfig_->tdnThreshold; + imageMetadata->set("tdn.status", tdn); + LOG(RPiDenoise, Debug) + << "programmed tdn threshold " << tdn.threshold + << " constant " << tdn.noiseConstant + << " slope " << tdn.noiseSlope; + } + + if (currentConfig_->cdnEnable && mode_ != DenoiseMode::ColourOff) { + struct CdnStatus cdn; + cdn.threshold = currentConfig_->cdnDeviation * noiseStatus.noiseSlope + noiseStatus.noiseConstant; + cdn.strength = currentConfig_->cdnStrength; + imageMetadata->set("cdn.status", cdn); + LOG(RPiDenoise, Debug) + << "programmed cdn threshold " << cdn.threshold + << " strength " << cdn.strength; + } +} + +void Denoise::setMode(DenoiseMode mode) +{ + // We only distinguish between off and all other modes. + mode_ = mode; +} + +void Denoise::setConfig(std::string const &name) +{ + auto it = configs_.find(name); + if (it == configs_.end()) { + /* + * Some platforms may have no need for different denoise settings, so we only issue + * a warning if there clearly are several configurations. + */ + if (configs_.size() > 1) + LOG(RPiDenoise, Warning) << "No denoise config found for " << name; + else + LOG(RPiDenoise, Debug) << "No denoise config found for " << name; + } else + currentConfig_ = &it->second; +} + +// Register algorithm with the system. +static Algorithm *Create(Controller *controller) +{ + return (Algorithm *)new Denoise(controller); +} +static RegisterAlgorithm reg(NAME, &Create); |