[PATCH v1 2/3] treewide: Use `YamlObject::find()`

Laurent Pinchart laurent.pinchart at ideasonboard.com
Fri Dec 6 02:09:32 CET 2024


Hi Barnabás,

Thank you for the patch.

On Thu, Dec 05, 2024 at 04:34:19PM +0000, Barnabás Pőcze wrote:
> Replace some uses of `contains()` + `operator[]` with `find()`.
> Using `find()` avoids the double lookup, as well as does away with
> the need for specifying the key twice.
> 
> Signed-off-by: Barnabás Pőcze <pobrn at protonmail.com>
> ---
>  src/android/camera_hal_config.cpp          | 19 ++++----
>  src/ipa/ipu3/ipu3.cpp                      |  5 +-
>  src/ipa/rkisp1/algorithms/dpcc.cpp         | 56 +++++++++++-----------
>  src/ipa/rkisp1/rkisp1.cpp                  |  5 +-
>  src/ipa/rpi/controller/controller.cpp      |  5 +-
>  src/ipa/rpi/controller/rpi/af.cpp          | 32 ++++++-------
>  src/ipa/rpi/controller/rpi/agc.cpp         |  8 ++--
>  src/ipa/rpi/controller/rpi/agc_channel.cpp |  4 +-
>  src/ipa/rpi/controller/rpi/alsc.cpp        | 10 ++--
>  src/ipa/rpi/controller/rpi/awb.cpp         | 12 ++---
>  src/ipa/rpi/controller/rpi/ccm.cpp         |  4 +-
>  src/ipa/rpi/controller/rpi/geq.cpp         |  4 +-
>  src/ipa/rpi/controller/rpi/hdr.cpp         | 27 ++++++-----
>  src/ipa/simple/soft_simple.cpp             |  5 +-
>  14 files changed, 99 insertions(+), 97 deletions(-)
> 
> diff --git a/src/android/camera_hal_config.cpp b/src/android/camera_hal_config.cpp
> index 7ef451ef..6fde953d 100644
> --- a/src/android/camera_hal_config.cpp
> +++ b/src/android/camera_hal_config.cpp
> @@ -73,15 +73,14 @@ int CameraHalConfig::Private::parseConfigFile(File &file,
>  		return -EINVAL;
>  
>  	/* Parse property "cameras" */
> -	if (!root->contains("cameras"))
> +	auto *yamlObjectCameras = root->find("cameras");

I generally dislike overusing auto as it makes the code less explicit,
and therefore less readable. There are valid use cases, for instance
spelling out std::map<std::string, std::vector<std::pair<...>>>::iterator
would be inconvenient. Usage of auto in structured bindings is also
useful. In this specifif case, however, writing

	const YamlObject *yamlObjectCameras = root->find("cameras");

isn't much longer, and I think it improves readability.

Same below.

> +	if (!yamlObjectCameras)
>  		return -EINVAL;
>  
> -	const YamlObject &yamlObjectCameras = (*root)["cameras"];
> -
> -	if (!yamlObjectCameras.isDictionary())
> +	if (!yamlObjectCameras->isDictionary())
>  		return -EINVAL;
>  
> -	for (const auto &[cameraId, configData] : yamlObjectCameras.asDict()) {
> +	for (const auto &[cameraId, configData] : yamlObjectCameras->asDict()) {
>  		if (parseCameraConfigData(cameraId, configData))
>  			return -EINVAL;
>  	}
> @@ -112,10 +111,11 @@ int CameraHalConfig::Private::parseCameraConfigData(const std::string &cameraId,
>  int CameraHalConfig::Private::parseLocation(const YamlObject &cameraObject,
>  					    CameraConfigData &cameraConfigData)
>  {
> -	if (!cameraObject.contains("location"))
> +	auto *loc = cameraObject.find("location");
> +	if (!loc)
>  		return -EINVAL;
>  
> -	std::string location = cameraObject["location"].get<std::string>("");
> +	std::string location = loc->get<std::string>("");
>  
>  	if (location == "front")
>  		cameraConfigData.facing = CAMERA_FACING_FRONT;
> @@ -130,10 +130,11 @@ int CameraHalConfig::Private::parseLocation(const YamlObject &cameraObject,
>  int CameraHalConfig::Private::parseRotation(const YamlObject &cameraObject,
>  					    CameraConfigData &cameraConfigData)
>  {
> -	if (!cameraObject.contains("rotation"))
> +	auto *rot = cameraObject.find("rotation");
> +	if (!rot)
>  		return -EINVAL;
>  
> -	int32_t rotation = cameraObject["rotation"].get<int32_t>(-1);
> +	int32_t rotation = rot->get<int32_t>(-1);
>  
>  	if (rotation < 0 || rotation >= 360) {
>  		LOG(HALConfig, Error)
> diff --git a/src/ipa/ipu3/ipu3.cpp b/src/ipa/ipu3/ipu3.cpp
> index 44c98cbf..88b1bb81 100644
> --- a/src/ipa/ipu3/ipu3.cpp
> +++ b/src/ipa/ipu3/ipu3.cpp
> @@ -335,13 +335,14 @@ int IPAIPU3::init(const IPASettings &settings,
>  		return -EINVAL;
>  	}
>  
> -	if (!data->contains("algorithms")) {
> +	auto *algos = data->find("algorithms");
> +	if (!algos) {
>  		LOG(IPAIPU3, Error)
>  			<< "Tuning file doesn't contain any algorithm";
>  		return -EINVAL;
>  	}
>  
> -	int ret = createAlgorithms(context_, (*data)["algorithms"]);
> +	int ret = createAlgorithms(context_, *algos);
>  	if (ret)
>  		return ret;
>  
> diff --git a/src/ipa/rkisp1/algorithms/dpcc.cpp b/src/ipa/rkisp1/algorithms/dpcc.cpp
> index 78946281..8946c1a7 100644
> --- a/src/ipa/rkisp1/algorithms/dpcc.cpp
> +++ b/src/ipa/rkisp1/algorithms/dpcc.cpp
> @@ -80,39 +80,39 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>  		/* PG Method */
>  		const YamlObject &pgObject = set["pg-factor"];
>  
> -		if (pgObject.contains("green")) {
> +		if (auto *green = pgObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_PG_GREEN_ENABLE;
>  
> -			value = pgObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			method.pg_fac |= RKISP1_CIF_ISP_DPCC_PG_FAC_G(value);
>  		}
>  
> -		if (pgObject.contains("red-blue")) {
> +		if (auto *redBlue = pgObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_PG_RED_BLUE_ENABLE;
>  
> -			value = pgObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			method.pg_fac |= RKISP1_CIF_ISP_DPCC_PG_FAC_RB(value);
>  		}
>  
>  		/* RO Method */
>  		const YamlObject &roObject = set["ro-limits"];
>  
> -		if (roObject.contains("green")) {
> +		if (auto *green = roObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RO_GREEN_ENABLE;
>  
> -			value = roObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			config_.ro_limits |=
>  				RKISP1_CIF_ISP_DPCC_RO_LIMITS_n_G(i, value);
>  		}
>  
> -		if (roObject.contains("red-blue")) {
> +		if (auto *redBlue = roObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RO_RED_BLUE_ENABLE;
>  
> -			value = roObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			config_.ro_limits |=
>  				RKISP1_CIF_ISP_DPCC_RO_LIMITS_n_RB(i, value);
>  		}
> @@ -121,39 +121,39 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>  		const YamlObject &rgObject = set["rg-factor"];
>  		method.rg_fac = 0;
>  
> -		if (rgObject.contains("green")) {
> +		if (auto *green = rgObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RG_GREEN_ENABLE;
>  
> -			value = rgObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			method.rg_fac |= RKISP1_CIF_ISP_DPCC_RG_FAC_G(value);
>  		}
>  
> -		if (rgObject.contains("red-blue")) {
> +		if (auto *redBlue = rgObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RG_RED_BLUE_ENABLE;
>  
> -			value = rgObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			method.rg_fac |= RKISP1_CIF_ISP_DPCC_RG_FAC_RB(value);
>  		}
>  
>  		/* RND Method */
>  		const YamlObject &rndOffsetsObject = set["rnd-offsets"];
>  
> -		if (rndOffsetsObject.contains("green")) {
> +		if (auto *green = rndOffsetsObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RND_GREEN_ENABLE;
>  
> -			value = rndOffsetsObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			config_.rnd_offs |=
>  				RKISP1_CIF_ISP_DPCC_RND_OFFS_n_G(i, value);
>  		}
>  
> -		if (rndOffsetsObject.contains("red-blue")) {
> +		if (auto *redBlue = rndOffsetsObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RND_RED_BLUE_ENABLE;
>  
> -			value = rndOffsetsObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			config_.rnd_offs |=
>  				RKISP1_CIF_ISP_DPCC_RND_OFFS_n_RB(i, value);
>  		}
> @@ -161,20 +161,20 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>  		const YamlObject &rndThresholdObject = set["rnd-threshold"];
>  		method.rnd_thresh = 0;
>  
> -		if (rndThresholdObject.contains("green")) {
> +		if (auto *green = rndThresholdObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RND_GREEN_ENABLE;
>  
> -			value = rndThresholdObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			method.rnd_thresh |=
>  				RKISP1_CIF_ISP_DPCC_RND_THRESH_G(value);
>  		}
>  
> -		if (rndThresholdObject.contains("red-blue")) {
> +		if (auto *redBlue = rndThresholdObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_RND_RED_BLUE_ENABLE;
>  
> -			value = rndThresholdObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			method.rnd_thresh |=
>  				RKISP1_CIF_ISP_DPCC_RND_THRESH_RB(value);
>  		}
> @@ -183,20 +183,20 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>  		const YamlObject &lcThresholdObject = set["line-threshold"];
>  		method.line_thresh = 0;
>  
> -		if (lcThresholdObject.contains("green")) {
> +		if (auto *green = lcThresholdObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_LC_GREEN_ENABLE;
>  
> -			value = lcThresholdObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			method.line_thresh |=
>  				RKISP1_CIF_ISP_DPCC_LINE_THRESH_G(value);
>  		}
>  
> -		if (lcThresholdObject.contains("red-blue")) {
> +		if (auto *redBlue = lcThresholdObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_LC_RED_BLUE_ENABLE;
>  
> -			value = lcThresholdObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			method.line_thresh |=
>  				RKISP1_CIF_ISP_DPCC_LINE_THRESH_RB(value);
>  		}
> @@ -204,20 +204,20 @@ int DefectPixelClusterCorrection::init([[maybe_unused]] IPAContext &context,
>  		const YamlObject &lcTMadFactorObject = set["line-mad-factor"];
>  		method.line_mad_fac = 0;
>  
> -		if (lcTMadFactorObject.contains("green")) {
> +		if (auto *green = lcTMadFactorObject.find("green")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_LC_GREEN_ENABLE;
>  
> -			value = lcTMadFactorObject["green"].get<uint16_t>(0);
> +			value = green->get<uint16_t>(0);
>  			method.line_mad_fac |=
>  				RKISP1_CIF_ISP_DPCC_LINE_MAD_FAC_G(value);
>  		}
>  
> -		if (lcTMadFactorObject.contains("red-blue")) {
> +		if (auto *redBlue = lcTMadFactorObject.find("red-blue")) {
>  			method.method |=
>  				RKISP1_CIF_ISP_DPCC_METHODS_SET_LC_RED_BLUE_ENABLE;
>  
> -			value = lcTMadFactorObject["red-blue"].get<uint16_t>(0);
> +			value = redBlue->get<uint16_t>(0);
>  			method.line_mad_fac |=
>  				RKISP1_CIF_ISP_DPCC_LINE_MAD_FAC_RB(value);
>  		}
> diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
> index 2ffdd99b..202b53b7 100644
> --- a/src/ipa/rkisp1/rkisp1.cpp
> +++ b/src/ipa/rkisp1/rkisp1.cpp
> @@ -193,13 +193,14 @@ int IPARkISP1::init(const IPASettings &settings, unsigned int hwRevision,
>  		return -EINVAL;
>  	}
>  
> -	if (!data->contains("algorithms")) {
> +	auto *algos = data->find("algorithms");
> +	if (!algos) {
>  		LOG(IPARkISP1, Error)
>  			<< "Tuning file doesn't contain any algorithm";
>  		return -EINVAL;
>  	}
>  
> -	int ret = createAlgorithms(context_, (*data)["algorithms"]);
> +	int ret = createAlgorithms(context_, *algos);
>  	if (ret)
>  		return ret;
>  
> diff --git a/src/ipa/rpi/controller/controller.cpp b/src/ipa/rpi/controller/controller.cpp
> index e0131018..fbf31f23 100644
> --- a/src/ipa/rpi/controller/controller.cpp
> +++ b/src/ipa/rpi/controller/controller.cpp
> @@ -109,14 +109,15 @@ int Controller::read(char const *filename)
>  				return ret;
>  		}
>  	} else if (version < 3.0) {
> -		if (!root->contains("algorithms")) {
> +		auto *algos = root->find("algorithms");
> +		if (!algos) {
>  			LOG(RPiController, Error)
>  				<< "Tuning file " << filename
>  				<< " does not have an \"algorithms\" list!";
>  			return -EINVAL;
>  		}
>  
> -		for (auto const &rootAlgo : (*root)["algorithms"].asList())
> +		for (auto const &rootAlgo : algos->asList())
>  			for (auto const &[key, value] : rootAlgo.asDict()) {
>  				int ret = createAlgorithm(key, value);
>  				if (ret)
> diff --git a/src/ipa/rpi/controller/rpi/af.cpp b/src/ipa/rpi/controller/rpi/af.cpp
> index 2157eb94..c29bbaeb 100644
> --- a/src/ipa/rpi/controller/rpi/af.cpp
> +++ b/src/ipa/rpi/controller/rpi/af.cpp
> @@ -97,39 +97,35 @@ void Af::SpeedDependentParams::read(const libcamera::YamlObject &params)
>  
>  int Af::CfgParams::read(const libcamera::YamlObject &params)
>  {
> -	if (params.contains("ranges")) {
> -		auto &rr = params["ranges"];
> -
> -		if (rr.contains("normal"))
> -			ranges[AfRangeNormal].read(rr["normal"]);
> +	if (auto *rs = params.find("ranges")) {

I would have kept the same variable name (rr) but that doesn't matter
much.

> +		if (auto *normal = rs->find("normal"))
> +			ranges[AfRangeNormal].read(*normal);
>  		else
>  			LOG(RPiAf, Warning) << "Missing range \"normal\"";
>  
>  		ranges[AfRangeMacro] = ranges[AfRangeNormal];
> -		if (rr.contains("macro"))
> -			ranges[AfRangeMacro].read(rr["macro"]);
> +		if (auto *macro = rs->find("macro"))
> +			ranges[AfRangeMacro].read(*macro);
>  
>  		ranges[AfRangeFull].focusMin = std::min(ranges[AfRangeNormal].focusMin,
>  							ranges[AfRangeMacro].focusMin);
>  		ranges[AfRangeFull].focusMax = std::max(ranges[AfRangeNormal].focusMax,
>  							ranges[AfRangeMacro].focusMax);
>  		ranges[AfRangeFull].focusDefault = ranges[AfRangeNormal].focusDefault;
> -		if (rr.contains("full"))
> -			ranges[AfRangeFull].read(rr["full"]);
> +		if (auto *full = rs->find("full"))
> +			ranges[AfRangeFull].read(*full);
>  	} else
>  		LOG(RPiAf, Warning) << "No ranges defined";
>  
> -	if (params.contains("speeds")) {
> -		auto &ss = params["speeds"];
> -
> -		if (ss.contains("normal"))
> -			speeds[AfSpeedNormal].read(ss["normal"]);
> +	if (auto *ss = params.find("speeds")) {
> +		if (auto *normal = ss->find("normal"))
> +			speeds[AfSpeedNormal].read(*normal);
>  		else
>  			LOG(RPiAf, Warning) << "Missing speed \"normal\"";
>  
>  		speeds[AfSpeedFast] = speeds[AfSpeedNormal];
> -		if (ss.contains("fast"))
> -			speeds[AfSpeedFast].read(ss["fast"]);
> +		if (auto *fast = ss->find("fast"))
> +			speeds[AfSpeedFast].read(*fast);
>  	} else
>  		LOG(RPiAf, Warning) << "No speeds defined";
>  
> @@ -138,8 +134,8 @@ int Af::CfgParams::read(const libcamera::YamlObject &params)
>  	readNumber<uint32_t>(confClip, params, "conf_clip");
>  	readNumber<uint32_t>(skipFrames, params, "skip_frames");
>  
> -	if (params.contains("map"))
> -		map = params["map"].get<ipa::Pwl>(ipa::Pwl{});
> +	if (auto *m = params.find("map"))
> +		map = m->get<ipa::Pwl>(ipa::Pwl{});
>  	else
>  		LOG(RPiAf, Warning) << "No map defined";
>  
> diff --git a/src/ipa/rpi/controller/rpi/agc.cpp b/src/ipa/rpi/controller/rpi/agc.cpp
> index c48fdf15..5d924ebf 100644
> --- a/src/ipa/rpi/controller/rpi/agc.cpp
> +++ b/src/ipa/rpi/controller/rpi/agc.cpp
> @@ -37,18 +37,18 @@ int Agc::read(const libcamera::YamlObject &params)
>  	 * When there is only a single channel we can read the old style syntax.
>  	 * Otherwise we expect a "channels" keyword followed by a list of configurations.
>  	 */
> -	if (!params.contains("channels")) {
> +	auto *channels = params.find("channels");
> +	if (!channels) {
>  		LOG(RPiAgc, Debug) << "Single channel only";
>  		channelTotalExposures_.resize(1, 0s);
>  		channelData_.emplace_back();
>  		return channelData_.back().channel.read(params, getHardwareConfig());
>  	}
>  
> -	const auto &channels = params["channels"].asList();
> -	for (auto ch = channels.begin(); ch != channels.end(); ch++) {
> +	for (const auto &ch : channels->asList()) {
>  		LOG(RPiAgc, Debug) << "Read AGC channel";
>  		channelData_.emplace_back();
> -		int ret = channelData_.back().channel.read(*ch, getHardwareConfig());
> +		int ret = channelData_.back().channel.read(ch, getHardwareConfig());
>  		if (ret)
>  			return ret;
>  	}
> diff --git a/src/ipa/rpi/controller/rpi/agc_channel.cpp b/src/ipa/rpi/controller/rpi/agc_channel.cpp
> index 79c45973..50b9efd2 100644
> --- a/src/ipa/rpi/controller/rpi/agc_channel.cpp
> +++ b/src/ipa/rpi/controller/rpi/agc_channel.cpp
> @@ -235,8 +235,8 @@ int AgcConfig::read(const libcamera::YamlObject &params)
>  	if (ret)
>  		return ret;
>  
> -	if (params.contains("channel_constraints")) {
> -		ret = readChannelConstraints(channelConstraints, params["channel_constraints"]);
> +	if (auto *cc = params.find("channel_constraints")) {
> +		ret = readChannelConstraints(channelConstraints, *cc);
>  		if (ret)
>  			return ret;
>  	}
> diff --git a/src/ipa/rpi/controller/rpi/alsc.cpp b/src/ipa/rpi/controller/rpi/alsc.cpp
> index 21edb819..5a1a702b 100644
> --- a/src/ipa/rpi/controller/rpi/alsc.cpp
> +++ b/src/ipa/rpi/controller/rpi/alsc.cpp
> @@ -104,9 +104,9 @@ static int readCalibrations(std::vector<AlscCalibration> &calibrations,
>  			    const libcamera::YamlObject &params,
>  			    std::string const &name, const Size &size)
>  {
> -	if (params.contains(name)) {
> +	if (auto *param = params.find(name)) {
>  		double lastCt = 0;
> -		for (const auto &p : params[name].asList()) {
> +		for (const auto &p : param->asList()) {
>  			auto value = p["ct"].get<double>();
>  			if (!value)
>  				return -EINVAL;
> @@ -163,10 +163,10 @@ int Alsc::read(const libcamera::YamlObject &params)
>  	config_.luminanceLut.resize(config_.tableSize, 1.0);
>  	int ret = 0;
>  
> -	if (params.contains("corner_strength"))
> +	if (params.find("corner_strength"))
>  		ret = generateLut(config_.luminanceLut, params);
> -	else if (params.contains("luminance_lut"))
> -		ret = readLut(config_.luminanceLut, params["luminance_lut"]);
> +	else if (auto *ll = params.find("luminance_lut"))
> +		ret = readLut(config_.luminanceLut, *ll);
>  	else
>  		LOG(RPiAlsc, Warning)
>  			<< "no luminance table - assume unity everywhere";
> diff --git a/src/ipa/rpi/controller/rpi/awb.cpp b/src/ipa/rpi/controller/rpi/awb.cpp
> index c277a176..2e6e295c 100644
> --- a/src/ipa/rpi/controller/rpi/awb.cpp
> +++ b/src/ipa/rpi/controller/rpi/awb.cpp
> @@ -102,8 +102,8 @@ int AwbConfig::read(const libcamera::YamlObject &params)
>  	convergenceFrames = params["convergence_frames"].get<unsigned int>(3);
>  	speed = params["speed"].get<double>(0.05);
>  
> -	if (params.contains("ct_curve")) {
> -		ret = readCtCurve(ctR, ctB, params["ct_curve"]);
> +	if (auto *ct_curve = params.find("ct_curve")) {
> +		ret = readCtCurve(ctR, ctB, *ct_curve);
>  		if (ret)
>  			return ret;
>  		/* We will want the inverse functions of these too. */
> @@ -111,8 +111,8 @@ int AwbConfig::read(const libcamera::YamlObject &params)
>  		ctBInverse = ctB.inverse().first;
>  	}
>  
> -	if (params.contains("priors")) {
> -		for (const auto &p : params["priors"].asList()) {
> +	if (auto *ps = params.find("priors")) {
> +		for (const auto &p : ps->asList()) {
>  			AwbPrior prior;
>  			ret = prior.read(p);
>  			if (ret)
> @@ -128,8 +128,8 @@ int AwbConfig::read(const libcamera::YamlObject &params)
>  			return -EINVAL;
>  		}
>  	}
> -	if (params.contains("modes")) {
> -		for (const auto &[key, value] : params["modes"].asDict()) {
> +	if (auto *ms = params.find("modes")) {
> +		for (const auto &[key, value] : ms->asDict()) {
>  			ret = modes[key].read(value);
>  			if (ret)
>  				return ret;
> diff --git a/src/ipa/rpi/controller/rpi/ccm.cpp b/src/ipa/rpi/controller/rpi/ccm.cpp
> index 8607f152..5616e5f4 100644
> --- a/src/ipa/rpi/controller/rpi/ccm.cpp
> +++ b/src/ipa/rpi/controller/rpi/ccm.cpp
> @@ -41,8 +41,8 @@ char const *Ccm::name() const
>  
>  int Ccm::read(const libcamera::YamlObject &params)
>  {
> -	if (params.contains("saturation")) {
> -		config_.saturation = params["saturation"].get<ipa::Pwl>(ipa::Pwl{});
> +	if (auto *s = params.find("saturation")) {
> +		config_.saturation = s->get<ipa::Pwl>(ipa::Pwl{});
>  		if (config_.saturation.empty())
>  			return -EINVAL;
>  	}
> diff --git a/src/ipa/rpi/controller/rpi/geq.cpp b/src/ipa/rpi/controller/rpi/geq.cpp
> index 40e7191b..6935f726 100644
> --- a/src/ipa/rpi/controller/rpi/geq.cpp
> +++ b/src/ipa/rpi/controller/rpi/geq.cpp
> @@ -43,8 +43,8 @@ int Geq::read(const libcamera::YamlObject &params)
>  		return -EINVAL;
>  	}
>  
> -	if (params.contains("strength")) {
> -		config_.strength = params["strength"].get<ipa::Pwl>(ipa::Pwl{});
> +	if (auto *strength = params.find("strength")) {
> +		config_.strength = strength->get<ipa::Pwl>(ipa::Pwl{});
>  		if (config_.strength.empty())
>  			return -EINVAL;
>  	}
> diff --git a/src/ipa/rpi/controller/rpi/hdr.cpp b/src/ipa/rpi/controller/rpi/hdr.cpp
> index f3da8291..20b1ff4b 100644
> --- a/src/ipa/rpi/controller/rpi/hdr.cpp
> +++ b/src/ipa/rpi/controller/rpi/hdr.cpp
> @@ -27,9 +27,10 @@ void HdrConfig::read(const libcamera::YamlObject &params, const std::string &mod
>  {
>  	name = modeName;
>  
> -	if (!params.contains("cadence"))
> +	auto *c = params.find("cadence");
> +	if (!c)
>  		LOG(RPiHdr, Fatal) << "No cadence for HDR mode " << name;
> -	cadence = params["cadence"].getList<unsigned int>().value();
> +	cadence = c->getList<unsigned int>().value();
>  	if (cadence.empty())
>  		LOG(RPiHdr, Fatal) << "Empty cadence in HDR mode " << name;
>  
> @@ -41,10 +42,10 @@ void HdrConfig::read(const libcamera::YamlObject &params, const std::string &mod
>  		channelMap[v.get<unsigned int>().value()] = k;
>  
>  	/* Lens shading related parameters. */
> -	if (params.contains("spatial_gain_curve")) {
> -		spatialGainCurve = params["spatial_gain_curve"].get<ipa::Pwl>(ipa::Pwl{});
> -	} else if (params.contains("spatial_gain")) {
> -		double spatialGain = params["spatial_gain"].get<double>(2.0);
> +	if (auto *sgc = params.find("spatial_gain_curve")) {
> +		spatialGainCurve = sgc->get<ipa::Pwl>(ipa::Pwl{});
> +	} else if (auto *sg = params.find("spatial_gain")) {
> +		double spatialGain = sg->get<double>(2.0);
>  		spatialGainCurve.append(0.0, spatialGain);
>  		spatialGainCurve.append(0.01, spatialGain);
>  		spatialGainCurve.append(0.06, 1.0); /* maybe make this programmable? */
> @@ -68,24 +69,24 @@ void HdrConfig::read(const libcamera::YamlObject &params, const std::string &mod
>  	if (tonemapEnable)
>  		tonemap = params["tonemap"].get<ipa::Pwl>(ipa::Pwl{});
>  	speed = params["speed"].get<double>(1.0);
> -	if (params.contains("hi_quantile_targets")) {
> -		hiQuantileTargets = params["hi_quantile_targets"].getList<double>().value();
> +	if (auto *hqt = params.find("hi_quantile_targets")) {
> +		hiQuantileTargets = hqt->getList<double>().value();
>  		if (hiQuantileTargets.empty() || hiQuantileTargets.size() % 2)
>  			LOG(RPiHdr, Fatal) << "hi_quantile_targets much be even and non-empty";
>  	} else
>  		hiQuantileTargets = { 0.95, 0.65, 0.5, 0.28, 0.3, 0.25 };
>  	hiQuantileMaxGain = params["hi_quantile_max_gain"].get<double>(1.6);
> -	if (params.contains("quantile_targets")) {
> -		quantileTargets = params["quantile_targets"].getList<double>().value();
> +	if (auto *qt = params.find("quantile_targets")) {
> +		quantileTargets = qt->getList<double>().value();
>  		if (quantileTargets.empty() || quantileTargets.size() % 2)
>  			LOG(RPiHdr, Fatal) << "quantile_targets much be even and non-empty";
>  	} else
>  		quantileTargets = { 0.2, 0.03, 1.0, 0.15 };
>  	powerMin = params["power_min"].get<double>(0.65);
>  	powerMax = params["power_max"].get<double>(1.0);
> -	if (params.contains("contrast_adjustments")) {
> -		contrastAdjustments = params["contrast_adjustments"].getList<double>().value();
> -	} else
> +	if (auto *ca = params.find("contrast_adjustments"))
> +		contrastAdjustments = ca->getList<double>().value();
> +	else
>  		contrastAdjustments = { 0.5, 0.75 };
>  
>  	/* Read any stitch parameters. */
> diff --git a/src/ipa/simple/soft_simple.cpp b/src/ipa/simple/soft_simple.cpp
> index e1b6d3af..ca3fe487 100644
> --- a/src/ipa/simple/soft_simple.cpp
> +++ b/src/ipa/simple/soft_simple.cpp
> @@ -114,12 +114,13 @@ int IPASoftSimple::init(const IPASettings &settings,
>  	unsigned int version = (*data)["version"].get<uint32_t>(0);
>  	LOG(IPASoft, Debug) << "Tuning file version " << version;
>  
> -	if (!data->contains("algorithms")) {
> +	auto *algos = data->find("algorithms");
> +	if (!algos) {
>  		LOG(IPASoft, Error) << "Tuning file doesn't contain algorithms";
>  		return -EINVAL;
>  	}
>  
> -	int ret = createAlgorithms(context_, (*data)["algorithms"]);
> +	int ret = createAlgorithms(context_, *algos);
>  	if (ret)
>  		return ret;
>  

-- 
Regards,

Laurent Pinchart


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