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libcamera: pipeline: Move tuning file override handling to IPAProxy

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The rkisp1 and rpi pipeline handlers duplicate code to handle the
LIBCAMERA_RKISP1_TUNING_FILE and LIBCAMERA_RPI_TUNING_FILE environment
variables that override tuning file selection. Move the common code to
IPAProxy::configurationFile() to avoid the duplication, and make the
feature available to all pipeline handlers with the same behaviour.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2025-01-23 16:34:56 +02:00
parent 3e753e2273
commit f5da05ed03
4 changed files with 32 additions and 33 deletions
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4
Documentation/environment_variables.rst
View file

@ -57,8 +57,8 @@ LIBCAMERA_RPI_CONFIG_FILE
Example value: ``/usr/local/share/libcamera/pipeline/rpi/vc4/minimal_mem.yaml``
LIBCAMERA_RPI_TUNING_FILE
Define a custom JSON tuning file to use in the Raspberry Pi.
LIBCAMERA_<NAME>_TUNING_FILE
Define a custom IPA tuning file to use with the pipeline handler `NAME`.
Example value: ``/usr/local/share/libcamera/ipa/rpi/vc4/custom_sensor.json``

27
src/libcamera/ipa_proxy.cpp
View file

@ -98,16 +98,33 @@ IPAProxy::~IPAProxy()
std::string IPAProxy::configurationFile(const std::string &name,
const std::string &fallbackName) const
{
struct stat statbuf;
int ret;
/*
* The IPA module name can be used as-is to build directory names as it
* has been validated when loading the module.
*/
std::string ipaName = ipam_->info().name;
const std::string ipaName = ipam_->info().name;
/* Check the environment variable first. */
/*
* Start with any user override through the module-specific environment
* variable. Use the name of the IPA module up to the first '/' to
* construct the variable name.
*/
std::string ipaEnvName = ipaName.substr(0, ipaName.find('/'));
std::transform(ipaEnvName.begin(), ipaEnvName.end(), ipaEnvName.begin(),
[](unsigned char c) { return std::toupper(c); });
ipaEnvName = "LIBCAMERA_" + ipaEnvName + "_TUNING_FILE";
char const *configFromEnv = utils::secure_getenv(ipaEnvName.c_str());
if (configFromEnv && *configFromEnv == '\0')
return { configFromEnv };
struct stat statbuf;
int ret;
/*
* Check the directory pointed to by the IPA config path environment
* variable next.
*/
const char *confPaths = utils::secure_getenv("LIBCAMERA_IPA_CONFIG_PATH");
if (confPaths) {
for (const auto &dir : utils::split(confPaths, ":")) {

15
src/libcamera/pipeline/rkisp1/rkisp1.cpp
View file

@ -380,18 +380,9 @@ int RkISP1CameraData::loadIPA(unsigned int hwRevision)
ipa_->paramsComputed.connect(this, &RkISP1CameraData::paramsComputed);
ipa_->metadataReady.connect(this, &RkISP1CameraData::metadataReady);
/*
* The API tuning file is made from the sensor name unless the
* environment variable overrides it.
*/
std::string ipaTuningFile;
char const *configFromEnv = utils::secure_getenv("LIBCAMERA_RKISP1_TUNING_FILE");
if (!configFromEnv || *configFromEnv == '\0') {
ipaTuningFile =
ipa_->configurationFile(sensor_->model() + ".yaml", "uncalibrated.yaml");
} else {
ipaTuningFile = std::string(configFromEnv);
}
/* The IPA tuning file is made from the sensor name. */
std::string ipaTuningFile =
ipa_->configurationFile(sensor_->model() + ".yaml", "uncalibrated.yaml");
IPACameraSensorInfo sensorInfo{};
int ret = sensor_->sensorInfo(&sensorInfo);

19
src/libcamera/pipeline/rpi/common/pipeline_base.cpp
View file

@ -1156,20 +1156,11 @@ int CameraData::loadIPA(ipa::RPi::InitResult *result)
if (!ipa_)
return -ENOENT;
/*
* 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') {
std::string model = sensor_->model();
if (isMonoSensor(sensor_))
model += "_mono";
configurationFile = ipa_->configurationFile(model + ".json");
} else {
configurationFile = std::string(configFromEnv);
}
/* The configuration (tuning file) is made from the sensor name. */
std::string model = sensor_->model();
if (isMonoSensor(sensor_))
model += "_mono";
std::string configurationFile = ipa_->configurationFile(model + ".json");
IPASettings settings(configurationFile, sensor_->model());
ipa::RPi::InitParams params;