[libcamera-devel] [PATCH 08/15] DNI: ipa: raspberrypi: Code refactoring to match style guidelines

Laurent Pinchart laurent.pinchart at ideasonboard.com
Mon Jul 25 22:54:10 CEST 2022


Hi Naush,

Thank you for the patch.

On Mon, Jul 25, 2022 at 02:46:32PM +0100, Naushir Patuck via libcamera-devel wrote:
> Refactor the source files src/ipa/raspberrypi/controller/rps/[b|c|d]* to match the
> recommended formatting guidelines for the libcamera project. The vast majority
> of changes in this commit comprise of switching from snake_case to CamelCase,
> and starting class member functions with a lower case character.
> 
> Signed-off-by: Naushir Patuck <naush at raspberrypi.com>
> ---
>  .../controller/rpi/black_level.cpp            |  32 ++---
>  .../controller/rpi/black_level.hpp            |  12 +-
>  src/ipa/raspberrypi/controller/rpi/ccm.cpp    |  84 +++++++------
>  src/ipa/raspberrypi/controller/rpi/ccm.hpp    |  12 +-
>  .../raspberrypi/controller/rpi/contrast.cpp   | 118 +++++++++---------
>  .../raspberrypi/controller/rpi/contrast.hpp   |  30 ++---
>  src/ipa/raspberrypi/controller/rpi/dpc.cpp    |  18 +--
>  src/ipa/raspberrypi/controller/rpi/dpc.hpp    |   6 +-
>  8 files changed, 155 insertions(+), 157 deletions(-)
> 
> diff --git a/src/ipa/raspberrypi/controller/rpi/black_level.cpp b/src/ipa/raspberrypi/controller/rpi/black_level.cpp
> index 6b3497f13c19..695b3129dd93 100644
> --- a/src/ipa/raspberrypi/controller/rpi/black_level.cpp
> +++ b/src/ipa/raspberrypi/controller/rpi/black_level.cpp
> @@ -26,38 +26,38 @@ BlackLevel::BlackLevel(Controller *controller)
>  {
>  }
>  
> -char const *BlackLevel::Name() const
> +char const *BlackLevel::name() const
>  {
>  	return NAME;
>  }
>  
> -void BlackLevel::Read(boost::property_tree::ptree const &params)
> +void BlackLevel::read(boost::property_tree::ptree const &params)
>  {
> -	uint16_t black_level = params.get<uint16_t>(
> +	uint16_t blackLevel = params.get<uint16_t>(
>  		"black_level", 4096); // 64 in 10 bits scaled to 16 bits
> -	black_level_r_ = params.get<uint16_t>("black_level_r", black_level);
> -	black_level_g_ = params.get<uint16_t>("black_level_g", black_level);
> -	black_level_b_ = params.get<uint16_t>("black_level_b", black_level);
> +	blackLevelR_ = params.get<uint16_t>("black_level_r", blackLevel);
> +	blackLevelG_ = params.get<uint16_t>("black_level_g", blackLevel);
> +	blackLevelB_ = params.get<uint16_t>("black_level_b", blackLevel);
>  	LOG(RPiBlackLevel, Debug)
> -		<< " Read black levels red " << black_level_r_
> -		<< " green " << black_level_g_
> -		<< " blue " << black_level_b_;
> +		<< " Read black levels red " << blackLevelR_
> +		<< " green " << blackLevelG_
> +		<< " blue " << blackLevelB_;
>  }
>  
> -void BlackLevel::Prepare(Metadata *image_metadata)
> +void BlackLevel::prepare(Metadata *imageMetadata)
>  {
>  	// Possibly we should think about doing this in a switch_mode or

switch_mode could be updated too.

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

>  	// something?
>  	struct BlackLevelStatus status;
> -	status.black_level_r = black_level_r_;
> -	status.black_level_g = black_level_g_;
> -	status.black_level_b = black_level_b_;
> -	image_metadata->Set("black_level.status", status);
> +	status.black_level_r = blackLevelR_;
> +	status.black_level_g = blackLevelG_;
> +	status.black_level_b = blackLevelB_;
> +	imageMetadata->set("black_level.status", status);
>  }
>  
>  // Register algorithm with the system.
> -static Algorithm *Create(Controller *controller)
> +static Algorithm *create(Controller *controller)
>  {
>  	return new BlackLevel(controller);
>  }
> -static RegisterAlgorithm reg(NAME, &Create);
> +static RegisterAlgorithm reg(NAME, &create);
> diff --git a/src/ipa/raspberrypi/controller/rpi/black_level.hpp b/src/ipa/raspberrypi/controller/rpi/black_level.hpp
> index 65ec4d0ed26c..0d74f6a4c49b 100644
> --- a/src/ipa/raspberrypi/controller/rpi/black_level.hpp
> +++ b/src/ipa/raspberrypi/controller/rpi/black_level.hpp
> @@ -17,14 +17,14 @@ class BlackLevel : public Algorithm
>  {
>  public:
>  	BlackLevel(Controller *controller);
> -	char const *Name() const override;
> -	void Read(boost::property_tree::ptree const &params) override;
> -	void Prepare(Metadata *image_metadata) override;
> +	char const *name() const override;
> +	void read(boost::property_tree::ptree const &params) override;
> +	void prepare(Metadata *imageMetadata) override;
>  
>  private:
> -	double black_level_r_;
> -	double black_level_g_;
> -	double black_level_b_;
> +	double blackLevelR_;
> +	double blackLevelG_;
> +	double blackLevelB_;
>  };
>  
>  } // namespace RPiController
> diff --git a/src/ipa/raspberrypi/controller/rpi/ccm.cpp b/src/ipa/raspberrypi/controller/rpi/ccm.cpp
> index 821a4c7c98c5..24d8e5bd1fd8 100644
> --- a/src/ipa/raspberrypi/controller/rpi/ccm.cpp
> +++ b/src/ipa/raspberrypi/controller/rpi/ccm.cpp
> @@ -37,7 +37,7 @@ Matrix::Matrix(double m0, double m1, double m2, double m3, double m4, double m5,
>  	m[0][0] = m0, m[0][1] = m1, m[0][2] = m2, m[1][0] = m3, m[1][1] = m4,
>  	m[1][2] = m5, m[2][0] = m6, m[2][1] = m7, m[2][2] = m8;
>  }
> -void Matrix::Read(boost::property_tree::ptree const &params)
> +void Matrix::read(boost::property_tree::ptree const &params)
>  {
>  	double *ptr = (double *)m;
>  	int n = 0;
> @@ -53,47 +53,49 @@ void Matrix::Read(boost::property_tree::ptree const &params)
>  Ccm::Ccm(Controller *controller)
>  	: CcmAlgorithm(controller), saturation_(1.0) {}
>  
> -char const *Ccm::Name() const
> +char const *Ccm::name() const
>  {
>  	return NAME;
>  }
>  
> -void Ccm::Read(boost::property_tree::ptree const &params)
> +void Ccm::read(boost::property_tree::ptree const &params)
>  {
>  	if (params.get_child_optional("saturation"))
> -		config_.saturation.Read(params.get_child("saturation"));
> +		config_.saturation.read(params.get_child("saturation"));
>  	for (auto &p : params.get_child("ccms")) {
> -		CtCcm ct_ccm;
> -		ct_ccm.ct = p.second.get<double>("ct");
> -		ct_ccm.ccm.Read(p.second.get_child("ccm"));
> +		CtCcm ctCcm;
> +		ctCcm.ct = p.second.get<double>("ct");
> +		ctCcm.ccm.read(p.second.get_child("ccm"));
>  		if (!config_.ccms.empty() &&
> -		    ct_ccm.ct <= config_.ccms.back().ct)
> +		    ctCcm.ct <= config_.ccms.back().ct)
>  			throw std::runtime_error(
>  				"Ccm: CCM not in increasing colour temperature order");
> -		config_.ccms.push_back(std::move(ct_ccm));
> +		config_.ccms.push_back(std::move(ctCcm));
>  	}
>  	if (config_.ccms.empty())
>  		throw std::runtime_error("Ccm: no CCMs specified");
>  }
>  
> -void Ccm::SetSaturation(double saturation)
> +void Ccm::setSaturation(double saturation)
>  {
>  	saturation_ = saturation;
>  }
>  
> -void Ccm::Initialise() {}
> +void Ccm::initialise()
> +{
> +}
>  
>  template<typename T>
> -static bool get_locked(Metadata *metadata, std::string const &tag, T &value)
> +static bool getLocked(Metadata *metadata, std::string const &tag, T &value)
>  {
> -	T *ptr = metadata->GetLocked<T>(tag);
> +	T *ptr = metadata->getLocked<T>(tag);
>  	if (ptr == nullptr)
>  		return false;
>  	value = *ptr;
>  	return true;
>  }
>  
> -Matrix calculate_ccm(std::vector<CtCcm> const &ccms, double ct)
> +Matrix calculateCcm(std::vector<CtCcm> const &ccms, double ct)
>  {
>  	if (ct <= ccms.front().ct)
>  		return ccms.front().ccm;
> @@ -109,7 +111,7 @@ Matrix calculate_ccm(std::vector<CtCcm> const &ccms, double ct)
>  	}
>  }
>  
> -Matrix apply_saturation(Matrix const &ccm, double saturation)
> +Matrix applySaturation(Matrix const &ccm, double saturation)
>  {
>  	Matrix RGB2Y(0.299, 0.587, 0.114, -0.169, -0.331, 0.500, 0.500, -0.419,
>  		     -0.081);
> @@ -119,51 +121,51 @@ Matrix apply_saturation(Matrix const &ccm, double saturation)
>  	return Y2RGB * S * RGB2Y * ccm;
>  }
>  
> -void Ccm::Prepare(Metadata *image_metadata)
> +void Ccm::prepare(Metadata *imageMetadata)
>  {
> -	bool awb_ok = false, lux_ok = false;
> +	bool awbOk = false, luxOk = false;
>  	struct AwbStatus awb = {};
> -	awb.temperature_K = 4000; // in case no metadata
> +	awb.temperatureK = 4000; // in case no metadata
>  	struct LuxStatus lux = {};
>  	lux.lux = 400; // in case no metadata
>  	{
>  		// grab mutex just once to get everything
> -		std::lock_guard<Metadata> lock(*image_metadata);
> -		awb_ok = get_locked(image_metadata, "awb.status", awb);
> -		lux_ok = get_locked(image_metadata, "lux.status", lux);
> +		std::lock_guard<Metadata> lock(*imageMetadata);
> +		awbOk = getLocked(imageMetadata, "awb.status", awb);
> +		luxOk = getLocked(imageMetadata, "lux.status", lux);
>  	}
> -	if (!awb_ok)
> +	if (!awbOk)
>  		LOG(RPiCcm, Warning) << "no colour temperature found";
> -	if (!lux_ok)
> +	if (!luxOk)
>  		LOG(RPiCcm, Warning) << "no lux value found";
> -	Matrix ccm = calculate_ccm(config_.ccms, awb.temperature_K);
> +	Matrix ccm = calculateCcm(config_.ccms, awb.temperatureK);
>  	double saturation = saturation_;
> -	struct CcmStatus ccm_status;
> -	ccm_status.saturation = saturation;
> -	if (!config_.saturation.Empty())
> -		saturation *= config_.saturation.Eval(
> -			config_.saturation.Domain().Clip(lux.lux));
> -	ccm = apply_saturation(ccm, saturation);
> +	struct CcmStatus ccmStatus;
> +	ccmStatus.saturation = saturation;
> +	if (!config_.saturation.empty())
> +		saturation *= config_.saturation.eval(
> +			config_.saturation.domain().clip(lux.lux));
> +	ccm = applySaturation(ccm, saturation);
>  	for (int j = 0; j < 3; j++)
>  		for (int i = 0; i < 3; i++)
> -			ccm_status.matrix[j * 3 + i] =
> +			ccmStatus.matrix[j * 3 + i] =
>  				std::max(-8.0, std::min(7.9999, ccm.m[j][i]));
>  	LOG(RPiCcm, Debug)
> -		<< "colour temperature " << awb.temperature_K << "K";
> +		<< "colour temperature " << awb.temperatureK << "K";
>  	LOG(RPiCcm, Debug)
> -		<< "CCM: " << ccm_status.matrix[0] << " " << ccm_status.matrix[1]
> -		<< " " << ccm_status.matrix[2] << "     "
> -		<< ccm_status.matrix[3] << " " << ccm_status.matrix[4]
> -		<< " " << ccm_status.matrix[5] << "     "
> -		<< ccm_status.matrix[6] << " " << ccm_status.matrix[7]
> -		<< " " << ccm_status.matrix[8];
> -	image_metadata->Set("ccm.status", ccm_status);
> +		<< "CCM: " << ccmStatus.matrix[0] << " " << ccmStatus.matrix[1]
> +		<< " " << ccmStatus.matrix[2] << "     "
> +		<< ccmStatus.matrix[3] << " " << ccmStatus.matrix[4]
> +		<< " " << ccmStatus.matrix[5] << "     "
> +		<< ccmStatus.matrix[6] << " " << ccmStatus.matrix[7]
> +		<< " " << ccmStatus.matrix[8];
> +	imageMetadata->set("ccm.status", ccmStatus);
>  }
>  
>  // Register algorithm with the system.
> -static Algorithm *Create(Controller *controller)
> +static Algorithm *create(Controller *controller)
>  {
>  	return (Algorithm *)new Ccm(controller);
>  	;
>  }
> -static RegisterAlgorithm reg(NAME, &Create);
> +static RegisterAlgorithm reg(NAME, &create);
> diff --git a/src/ipa/raspberrypi/controller/rpi/ccm.hpp b/src/ipa/raspberrypi/controller/rpi/ccm.hpp
> index 330ed51fe398..4c4807b8a942 100644
> --- a/src/ipa/raspberrypi/controller/rpi/ccm.hpp
> +++ b/src/ipa/raspberrypi/controller/rpi/ccm.hpp
> @@ -20,7 +20,7 @@ struct Matrix {
>  	       double m6, double m7, double m8);
>  	Matrix();
>  	double m[3][3];
> -	void Read(boost::property_tree::ptree const &params);
> +	void read(boost::property_tree::ptree const &params);
>  };
>  static inline Matrix operator*(double d, Matrix const &m)
>  {
> @@ -61,11 +61,11 @@ class Ccm : public CcmAlgorithm
>  {
>  public:
>  	Ccm(Controller *controller = NULL);
> -	char const *Name() const override;
> -	void Read(boost::property_tree::ptree const &params) override;
> -	void SetSaturation(double saturation) override;
> -	void Initialise() override;
> -	void Prepare(Metadata *image_metadata) override;
> +	char const *name() const override;
> +	void read(boost::property_tree::ptree const &params) override;
> +	void setSaturation(double saturation) override;
> +	void initialise() override;
> +	void prepare(Metadata *imageMetadata) override;
>  
>  private:
>  	CcmConfig config_;
> diff --git a/src/ipa/raspberrypi/controller/rpi/contrast.cpp b/src/ipa/raspberrypi/controller/rpi/contrast.cpp
> index ae55aad56739..169837576678 100644
> --- a/src/ipa/raspberrypi/controller/rpi/contrast.cpp
> +++ b/src/ipa/raspberrypi/controller/rpi/contrast.cpp
> @@ -31,40 +31,40 @@ Contrast::Contrast(Controller *controller)
>  {
>  }
>  
> -char const *Contrast::Name() const
> +char const *Contrast::name() const
>  {
>  	return NAME;
>  }
>  
> -void Contrast::Read(boost::property_tree::ptree const &params)
> +void Contrast::read(boost::property_tree::ptree const &params)
>  {
>  	// enable adaptive enhancement by default
> -	config_.ce_enable = params.get<int>("ce_enable", 1);
> +	config_.ceEnable = params.get<int>("ce_enable", 1);
>  	// the point near the bottom of the histogram to move
> -	config_.lo_histogram = params.get<double>("lo_histogram", 0.01);
> +	config_.loHistogram = params.get<double>("lo_histogram", 0.01);
>  	// where in the range to try and move it to
> -	config_.lo_level = params.get<double>("lo_level", 0.015);
> +	config_.loLevel = params.get<double>("lo_level", 0.015);
>  	// but don't move by more than this
> -	config_.lo_max = params.get<double>("lo_max", 500);
> +	config_.loMax = params.get<double>("lo_max", 500);
>  	// equivalent values for the top of the histogram...
> -	config_.hi_histogram = params.get<double>("hi_histogram", 0.95);
> -	config_.hi_level = params.get<double>("hi_level", 0.95);
> -	config_.hi_max = params.get<double>("hi_max", 2000);
> -	config_.gamma_curve.Read(params.get_child("gamma_curve"));
> +	config_.hiHistogram = params.get<double>("hi_histogram", 0.95);
> +	config_.hiLevel = params.get<double>("hi_level", 0.95);
> +	config_.hiMax = params.get<double>("hi_max", 2000);
> +	config_.gammaCurve.read(params.get_child("gamma_curve"));
>  }
>  
> -void Contrast::SetBrightness(double brightness)
> +void Contrast::setBrightness(double brightness)
>  {
>  	brightness_ = brightness;
>  }
>  
> -void Contrast::SetContrast(double contrast)
> +void Contrast::setContrast(double contrast)
>  {
>  	contrast_ = contrast;
>  }
>  
> -static void fill_in_status(ContrastStatus &status, double brightness,
> -			   double contrast, Pwl &gamma_curve)
> +static void fillInStatus(ContrastStatus &status, double brightness,
> +			 double contrast, Pwl &gammaCurve)
>  {
>  	status.brightness = brightness;
>  	status.contrast = contrast;
> @@ -73,104 +73,100 @@ static void fill_in_status(ContrastStatus &status, double brightness,
>  			       : (i < 24 ? (i - 16) * 2048 + 16384
>  					 : (i - 24) * 4096 + 32768);
>  		status.points[i].x = x;
> -		status.points[i].y = std::min(65535.0, gamma_curve.Eval(x));
> +		status.points[i].y = std::min(65535.0, gammaCurve.eval(x));
>  	}
>  	status.points[CONTRAST_NUM_POINTS - 1].x = 65535;
>  	status.points[CONTRAST_NUM_POINTS - 1].y = 65535;
>  }
>  
> -void Contrast::Initialise()
> +void Contrast::initialise()
>  {
>  	// Fill in some default values as Prepare will run before Process gets
>  	// called.
> -	fill_in_status(status_, brightness_, contrast_, config_.gamma_curve);
> +	fillInStatus(status_, brightness_, contrast_, config_.gammaCurve);
>  }
>  
> -void Contrast::Prepare(Metadata *image_metadata)
> +void Contrast::prepare(Metadata *imageMetadata)
>  {
>  	std::unique_lock<std::mutex> lock(mutex_);
> -	image_metadata->Set("contrast.status", status_);
> +	imageMetadata->set("contrast.status", status_);
>  }
>  
> -Pwl compute_stretch_curve(Histogram const &histogram,
> -			  ContrastConfig const &config)
> +Pwl computeStretchCurve(Histogram const &histogram,
> +			ContrastConfig const &config)
>  {
>  	Pwl enhance;
> -	enhance.Append(0, 0);
> +	enhance.append(0, 0);
>  	// If the start of the histogram is rather empty, try to pull it down a
>  	// bit.
> -	double hist_lo = histogram.Quantile(config.lo_histogram) *
> -			 (65536 / NUM_HISTOGRAM_BINS);
> -	double level_lo = config.lo_level * 65536;
> +	double histLo = histogram.quantile(config.loHistogram) *
> +			(65536 / NUM_HISTOGRAM_BINS);
> +	double levelLo = config.loLevel * 65536;
>  	LOG(RPiContrast, Debug)
> -		<< "Move histogram point " << hist_lo << " to " << level_lo;
> -	hist_lo = std::max(
> -		level_lo,
> -		std::min(65535.0, std::min(hist_lo, level_lo + config.lo_max)));
> +		<< "Move histogram point " << histLo << " to " << levelLo;
> +	histLo = std::max(levelLo,
> +			  std::min(65535.0, std::min(histLo, levelLo + config.loMax)));
>  	LOG(RPiContrast, Debug)
> -		<< "Final values " << hist_lo << " -> " << level_lo;
> -	enhance.Append(hist_lo, level_lo);
> +		<< "Final values " << histLo << " -> " << levelLo;
> +	enhance.append(histLo, levelLo);
>  	// Keep the mid-point (median) in the same place, though, to limit the
>  	// apparent amount of global brightness shift.
> -	double mid = histogram.Quantile(0.5) * (65536 / NUM_HISTOGRAM_BINS);
> -	enhance.Append(mid, mid);
> +	double mid = histogram.quantile(0.5) * (65536 / NUM_HISTOGRAM_BINS);
> +	enhance.append(mid, mid);
>  
>  	// If the top to the histogram is empty, try to pull the pixel values
>  	// there up.
> -	double hist_hi = histogram.Quantile(config.hi_histogram) *
> -			 (65536 / NUM_HISTOGRAM_BINS);
> -	double level_hi = config.hi_level * 65536;
> +	double histHi = histogram.quantile(config.hiHistogram) *
> +			(65536 / NUM_HISTOGRAM_BINS);
> +	double levelHi = config.hiLevel * 65536;
>  	LOG(RPiContrast, Debug)
> -		<< "Move histogram point " << hist_hi << " to " << level_hi;
> -	hist_hi = std::min(
> -		level_hi,
> -		std::max(0.0, std::max(hist_hi, level_hi - config.hi_max)));
> +		<< "Move histogram point " << histHi << " to " << levelHi;
> +	histHi = std::min(levelHi,
> +			  std::max(0.0, std::max(histHi, levelHi - config.hiMax)));
>  	LOG(RPiContrast, Debug)
> -		<< "Final values " << hist_hi << " -> " << level_hi;
> -	enhance.Append(hist_hi, level_hi);
> -	enhance.Append(65535, 65535);
> +		<< "Final values " << histHi << " -> " << levelHi;
> +	enhance.append(histHi, levelHi);
> +	enhance.append(65535, 65535);
>  	return enhance;
>  }
>  
> -Pwl apply_manual_contrast(Pwl const &gamma_curve, double brightness,
> -			  double contrast)
> +Pwl applyManualContrast(Pwl const &gammaCurve, double brightness,
> +			double contrast)
>  {
> -	Pwl new_gamma_curve;
> +	Pwl newGammaCurve;
>  	LOG(RPiContrast, Debug)
>  		<< "Manual brightness " << brightness << " contrast " << contrast;
> -	gamma_curve.Map([&](double x, double y) {
> -		new_gamma_curve.Append(
> +	gammaCurve.map([&](double x, double y) {
> +		newGammaCurve.append(
>  			x, std::max(0.0, std::min(65535.0,
>  						  (y - 32768) * contrast +
>  							  32768 + brightness)));
>  	});
> -	return new_gamma_curve;
> +	return newGammaCurve;
>  }
>  
> -void Contrast::Process(StatisticsPtr &stats,
> -		       [[maybe_unused]] Metadata *image_metadata)
> +void Contrast::process(StatisticsPtr &stats,
> +		       [[maybe_unused]] Metadata *imageMetadata)
>  {
>  	Histogram histogram(stats->hist[0].g_hist, NUM_HISTOGRAM_BINS);
>  	// We look at the histogram and adjust the gamma curve in the following
>  	// ways: 1. Adjust the gamma curve so as to pull the start of the
>  	// histogram down, and possibly push the end up.
> -	Pwl gamma_curve = config_.gamma_curve;
> -	if (config_.ce_enable) {
> -		if (config_.lo_max != 0 || config_.hi_max != 0)
> -			gamma_curve = compute_stretch_curve(histogram, config_)
> -					      .Compose(gamma_curve);
> +	Pwl gammaCurve = config_.gammaCurve;
> +	if (config_.ceEnable) {
> +		if (config_.loMax != 0 || config_.hiMax != 0)
> +			gammaCurve = computeStretchCurve(histogram, config_).compose(gammaCurve);
>  		// We could apply other adjustments (e.g. partial equalisation)
>  		// based on the histogram...?
>  	}
>  	// 2. Finally apply any manually selected brightness/contrast
>  	// adjustment.
>  	if (brightness_ != 0 || contrast_ != 1.0)
> -		gamma_curve = apply_manual_contrast(gamma_curve, brightness_,
> -						    contrast_);
> +		gammaCurve = applyManualContrast(gammaCurve, brightness_, contrast_);
>  	// And fill in the status for output. Use more points towards the bottom
>  	// of the curve.
>  	ContrastStatus status;
> -	fill_in_status(status, brightness_, contrast_, gamma_curve);
> +	fillInStatus(status, brightness_, contrast_, gammaCurve);
>  	{
>  		std::unique_lock<std::mutex> lock(mutex_);
>  		status_ = status;
> @@ -178,8 +174,8 @@ void Contrast::Process(StatisticsPtr &stats,
>  }
>  
>  // Register algorithm with the system.
> -static Algorithm *Create(Controller *controller)
> +static Algorithm *create(Controller *controller)
>  {
>  	return (Algorithm *)new Contrast(controller);
>  }
> -static RegisterAlgorithm reg(NAME, &Create);
> +static RegisterAlgorithm reg(NAME, &create);
> diff --git a/src/ipa/raspberrypi/controller/rpi/contrast.hpp b/src/ipa/raspberrypi/controller/rpi/contrast.hpp
> index 85624539a1da..5a6d530f63fd 100644
> --- a/src/ipa/raspberrypi/controller/rpi/contrast.hpp
> +++ b/src/ipa/raspberrypi/controller/rpi/contrast.hpp
> @@ -17,27 +17,27 @@ namespace RPiController {
>  // Back End AWB.
>  
>  struct ContrastConfig {
> -	bool ce_enable;
> -	double lo_histogram;
> -	double lo_level;
> -	double lo_max;
> -	double hi_histogram;
> -	double hi_level;
> -	double hi_max;
> -	Pwl gamma_curve;
> +	bool ceEnable;
> +	double loHistogram;
> +	double loLevel;
> +	double loMax;
> +	double hiHistogram;
> +	double hiLevel;
> +	double hiMax;
> +	Pwl gammaCurve;
>  };
>  
>  class Contrast : public ContrastAlgorithm
>  {
>  public:
>  	Contrast(Controller *controller = NULL);
> -	char const *Name() const override;
> -	void Read(boost::property_tree::ptree const &params) override;
> -	void SetBrightness(double brightness) override;
> -	void SetContrast(double contrast) override;
> -	void Initialise() override;
> -	void Prepare(Metadata *image_metadata) override;
> -	void Process(StatisticsPtr &stats, Metadata *image_metadata) override;
> +	char const *name() const override;
> +	void read(boost::property_tree::ptree const &params) override;
> +	void setBrightness(double brightness) override;
> +	void setContrast(double contrast) override;
> +	void initialise() override;
> +	void prepare(Metadata *imageMetadata) override;
> +	void process(StatisticsPtr &stats, Metadata *imageMetadata) override;
>  
>  private:
>  	ContrastConfig config_;
> diff --git a/src/ipa/raspberrypi/controller/rpi/dpc.cpp b/src/ipa/raspberrypi/controller/rpi/dpc.cpp
> index 110f50560e76..42154cf300b8 100644
> --- a/src/ipa/raspberrypi/controller/rpi/dpc.cpp
> +++ b/src/ipa/raspberrypi/controller/rpi/dpc.cpp
> @@ -24,30 +24,30 @@ Dpc::Dpc(Controller *controller)
>  {
>  }
>  
> -char const *Dpc::Name() const
> +char const *Dpc::name() const
>  {
>  	return NAME;
>  }
>  
> -void Dpc::Read(boost::property_tree::ptree const &params)
> +void Dpc::read(boost::property_tree::ptree const &params)
>  {
>  	config_.strength = params.get<int>("strength", 1);
>  	if (config_.strength < 0 || config_.strength > 2)
>  		throw std::runtime_error("Dpc: bad strength value");
>  }
>  
> -void Dpc::Prepare(Metadata *image_metadata)
> +void Dpc::prepare(Metadata *imageMetadata)
>  {
> -	DpcStatus dpc_status = {};
> +	DpcStatus dpcStatus = {};
>  	// Should we vary this with lux level or analogue gain? TBD.
> -	dpc_status.strength = config_.strength;
> -	LOG(RPiDpc, Debug) << "strength " << dpc_status.strength;
> -	image_metadata->Set("dpc.status", dpc_status);
> +	dpcStatus.strength = config_.strength;
> +	LOG(RPiDpc, Debug) << "strength " << dpcStatus.strength;
> +	imageMetadata->set("dpc.status", dpcStatus);
>  }
>  
>  // Register algorithm with the system.
> -static Algorithm *Create(Controller *controller)
> +static Algorithm *create(Controller *controller)
>  {
>  	return (Algorithm *)new Dpc(controller);
>  }
> -static RegisterAlgorithm reg(NAME, &Create);
> +static RegisterAlgorithm reg(NAME, &create);
> diff --git a/src/ipa/raspberrypi/controller/rpi/dpc.hpp b/src/ipa/raspberrypi/controller/rpi/dpc.hpp
> index d90285c4eb56..039310cc8d05 100644
> --- a/src/ipa/raspberrypi/controller/rpi/dpc.hpp
> +++ b/src/ipa/raspberrypi/controller/rpi/dpc.hpp
> @@ -21,9 +21,9 @@ class Dpc : public Algorithm
>  {
>  public:
>  	Dpc(Controller *controller);
> -	char const *Name() const override;
> -	void Read(boost::property_tree::ptree const &params) override;
> -	void Prepare(Metadata *image_metadata) override;
> +	char const *name() const override;
> +	void read(boost::property_tree::ptree const &params) override;
> +	void prepare(Metadata *imageMetadata) override;
>  
>  private:
>  	DpcConfig config_;

-- 
Regards,

Laurent Pinchart


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