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libcamera: raspberrypi: Allow the tuning file to be set by an environment variable

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The configuration (camera tuning) file used by the Raspberry Pi comes
by default from the sensor name. However, we now allow this to be
overridden by the LIBCAMERA_RPI_TUNING_FILE environment variable.

Signed-off-by: David Plowman <david.plowman@raspberrypi.com>
Reviewed-by: Sebastian Fricke <sebastian.fricke@posteo.net>
Reviewed-by: Naushir Patuck <naush@raspberrypi.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
This commit is contained in:
David Plowman 2021-07-07 14:40:51 +01:00 • committed by Laurent Pinchart
parent d6d4710d04
commit eb9a539938
1 changed files with 12 additions and 2 deletions
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14
src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
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@ -1233,8 +1233,18 @@ int RPiCameraData::loadIPA(ipa::RPi::SensorConfig *sensorConfig)
ipa_->setIspControls.connect(this, &RPiCameraData::setIspControls);
ipa_->setDelayedControls.connect(this, &RPiCameraData::setDelayedControls);
IPASettings settings(ipa_->configurationFile(sensor_->model() + ".json"),
sensor_->model());
/*
* The configuration (tuning file) is made from the sensor name unless
* the environment variable overrides it.
*/
std::string configurationFile;
char const *configFromEnv = utils::secure_getenv("LIBCAMERA_RPI_TUNING_FILE");
if (!configFromEnv || *configFromEnv == '\0')
configurationFile = ipa_->configurationFile(sensor_->model() + ".json");
else
configurationFile = std::string(configFromEnv);
IPASettings settings(configurationFile, sensor_->model());
return ipa_->init(settings, sensorConfig);
}