@@ -29,6 +29,7 @@ namespace libcamera {
class BayerFormat;
class CameraLens;
class MediaEntity;
+class SensorConfiguration;
struct CameraSensorProperties;
@@ -58,6 +59,10 @@ public:
Transform transform = Transform::Identity);
int tryFormat(V4L2SubdeviceFormat *format) const;
+ int applyConfiguration(const SensorConfiguration &config,
+ Transform transform = Transform::Identity,
+ V4L2SubdeviceFormat *sensorFormat = nullptr);
+
const ControlInfoMap &controls() const;
ControlList getControls(const std::vector<uint32_t> &ids);
int setControls(ControlList *ctrls);
@@ -15,6 +15,7 @@
#include <math.h>
#include <string.h>
+#include <libcamera/camera.h>
#include <libcamera/property_ids.h>
#include <libcamera/base/utils.h>
@@ -822,6 +823,91 @@ int CameraSensor::tryFormat(V4L2SubdeviceFormat *format) const
V4L2Subdevice::Whence::TryFormat);
}
+/**
+ * \brief Apply a sensor configuration to the camera sensor
+ * \param[in] config The sensor configuration
+ * \param[in] transform The transform to be applied on the sensor.
+ * Defaults to Identity
+ * \param[out] sensorFormat Optional output parameter where the format
+ * actually applied to the sensor is returned to the caller
+ *
+ * Apply to the camera sensor the configuration \a config.
+ *
+ * \todo The configuration shall be fully populated and if any of the fields
+ * specified cannot be applied exactly, an error code is returned.
+ *
+ * \return 0 if \a config is applied to the camera sensor, a negative error code
+ * otherwise
+ */
+int CameraSensor::applyConfiguration(const SensorConfiguration &config,
+ Transform transform,
+ V4L2SubdeviceFormat *sensorFormat)
+{
+ if (!config) {
+ LOG(CameraSensor, Error) << "Invalid sensor configuration";
+ return -EINVAL;
+ }
+
+ std::vector<unsigned int> filteredCodes;
+ std::copy_if(mbusCodes_.begin(), mbusCodes_.end(),
+ std::back_inserter(filteredCodes),
+ [&config](unsigned int mbusCode) {
+ BayerFormat bayer = BayerFormat::fromMbusCode(mbusCode);
+ if (bayer.bitDepth == config.bitDepth)
+ return true;
+ return false;
+ });
+ if (filteredCodes.empty()) {
+ LOG(CameraSensor, Error)
+ << "Cannot find any format with bit depth "
+ << config.bitDepth;
+ return -EINVAL;
+ }
+
+ /*
+ * Compute the sensor's data frame size by applying the cropping
+ * rectangle, subsampling and output crop to the sensor's pixel array
+ * size.
+ *
+ * \todo The actual size computation is for now ignored and only the
+ * output size is considered. This implies that resolutions obtained
+ * with two different cropping/subsampling will look identical and
+ * only the first found one will be considered.
+ */
+ V4L2SubdeviceFormat subdevFormat = {};
+ for (unsigned int code : filteredCodes) {
+ for (const Size &size : sizes(code)) {
+ if (size.width != config.outputSize.width ||
+ size.height != config.outputSize.height)
+ continue;
+
+ subdevFormat.mbus_code = code;
+ subdevFormat.size = size;
+ break;
+ }
+ }
+ if (!subdevFormat.mbus_code) {
+ LOG(CameraSensor, Error) << "Invalid output size in sensor configuration";
+ return -EINVAL;
+ }
+
+ int ret = setFormat(&subdevFormat, transform);
+ if (ret)
+ return ret;
+
+ /*
+ * Return to the caller the format actually applied to the sensor.
+ * This is relevant if transform has changed the bayer pattern order.
+ */
+ if (sensorFormat)
+ *sensorFormat = subdevFormat;
+
+ /* \todo Handle AnalogCrop. Most sensors do not support set_selection */
+ /* \todo Handle scaling in the digital domain. */
+
+ return 0;
+}
+
/**
* \brief Retrieve the supported V4L2 controls and their information
*