@@ -461,6 +461,68 @@ int CameraSensor::setControls(ControlList *ctrls)
return subdev_->setControls(ctrls);
}
+/**
+ * \brief Assemble and return the camera sensor info
+ * \param[out] info The camera sensor info
+ *
+ * The CameraSensorInfo content is assembled by inspecting the currently
+ * applied sensor configuration and the sensor static properties.
+ *
+ * \return 0 on success, a negative error code otherwise
+ */
+int CameraSensor::sensorInfo(CameraSensorInfo *info) const
+{
+ info->model = model();
+
+ /* Get the active area size. */
+ Rectangle rect = {};
+ int ret = subdev_->getSelection(0, V4L2_SEL_TGT_CROP_DEFAULT, &rect);
+ if (ret) {
+ LOG(CameraSensor, Error)
+ << "Failed to construct camera sensor info: "
+ << "the camera sensor does not report the active area";
+
+ return ret;
+ }
+ info->activeAreaSize = { rect.width, rect.height };
+
+ /* It's mandatory for the subdevice to report its crop rectangle. */
+ ret = subdev_->getSelection(0, V4L2_SEL_TGT_CROP, &info->analogCrop);
+ if (ret) {
+ LOG(CameraSensor, Error)
+ << "Failed to construct camera sensor info: "
+ << "the camera sensor does not report the crop rectangle";
+ return ret;
+ }
+
+ /* The bit depth and image size depend on the currently applied format. */
+ V4L2SubdeviceFormat format{};
+ ret = subdev_->getFormat(0, &format);
+ if (ret)
+ return ret;
+ info->bitsPerPixel = format.bitsPerPixel();
+ info->outputSize = format.size;
+
+ /*
+ * Retrieve the pixel rate and the line length through V4L2 controls.
+ * Support for the V4L2_CID_PIXEL_RATE and V4L2_CID_HBLANK controls is
+ * mandatory.
+ */
+ ControlList ctrls = subdev_->getControls({ V4L2_CID_PIXEL_RATE,
+ V4L2_CID_HBLANK });
+ if (ctrls.empty()) {
+ LOG(CameraSensor, Error)
+ << "Failed to retrieve camera info controls";
+ return -EINVAL;
+ }
+
+ int32_t hblank = ctrls.get(V4L2_CID_HBLANK).get<int32_t>();
+ info->lineLength = info->outputSize.width + hblank;
+ info->pixelRate = ctrls.get(V4L2_CID_PIXEL_RATE).get<int64_t>();
+
+ return 0;
+}
+
std::string CameraSensor::logPrefix() const
{
return "'" + subdev_->entity()->name() + "'";
@@ -61,6 +61,7 @@ public:
int setControls(ControlList *ctrls);
const ControlList &properties() const { return properties_; }
+ int sensorInfo(CameraSensorInfo *info) const;
protected:
std::string logPrefix() const;