diff options
| -rw-r--r-- | src/libcamera/camera_sensor.cpp | 62 | ||||
| -rw-r--r-- | src/libcamera/include/camera_sensor.h | 1 |
2 files changed, 63 insertions, 0 deletions
diff --git a/src/libcamera/camera_sensor.cpp b/src/libcamera/camera_sensor.cpp index f1eccfcb..d08bee0b 100644 --- a/src/libcamera/camera_sensor.cpp +++ b/src/libcamera/camera_sensor.cpp @@ -475,6 +475,68 @@ 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() + "'"; diff --git a/src/libcamera/include/camera_sensor.h b/src/libcamera/include/camera_sensor.h index e0bb6a50..f39ea96d 100644 --- a/src/libcamera/include/camera_sensor.h +++ b/src/libcamera/include/camera_sensor.h @@ -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; |