[PATCH v3 09/14] config: Look up RkISP1 tuning file in configuration file

[Milan Zamazal]

The configuration snippet:

  configuration:
    pipeline:
      rkisp1:
        tuning_file: FILE

This environment variable has not been documented.

Signed-off-by: Milan Zamazal <mzamazal at redhat.com>
---
 src/libcamera/pipeline/rkisp1/rkisp1.cpp | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 4cbf105d..c244ac6e 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -36,6 +36,7 @@
 #include "libcamera/internal/delayed_controls.h"
 #include "libcamera/internal/device_enumerator.h"
 #include "libcamera/internal/framebuffer.h"
+#include "libcamera/internal/global_configuration.h"
 #include "libcamera/internal/ipa_manager.h"
 #include "libcamera/internal/media_device.h"
 #include "libcamera/internal/pipeline_handler.h"
@@ -349,8 +350,12 @@ int RkISP1CameraData::loadIPA(unsigned int hwRevision)
 	 * environment variable overrides it.
 	 */
 	std::string ipaTuningFile;
-	char const *configFromEnv = utils::secure_getenv("LIBCAMERA_RKISP1_TUNING_FILE");
-	if (!configFromEnv || *configFromEnv == '\0') {
+	const std::string confPath =
+		std::string("pipelines.rkisp1.cameras.") + sensor_->id() + std::string(".tuning_file");
+	const auto confTuningFile =
+		GlobalConfiguration::envOption(
+			"LIBCAMERA_RKISP1_TUNING_FILE", confPath.c_str());
+	if (!confTuningFile.has_value() || confTuningFile.value() == "") {
 		ipaTuningFile = ipa_->configurationFile(sensor_->model() + ".yaml");
 		/*
 		 * If the tuning file isn't found, fall back to the
@@ -359,7 +364,7 @@ int RkISP1CameraData::loadIPA(unsigned int hwRevision)
 		if (ipaTuningFile.empty())
 			ipaTuningFile = ipa_->configurationFile("uncalibrated.yaml");
 	} else {
-		ipaTuningFile = std::string(configFromEnv);
+		ipaTuningFile = confTuningFile.value();
 	}
 
 	IPACameraSensorInfo sensorInfo{};
-- 
2.44.1