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-rw-r--r--src/libcamera/camera.cpp148
1 files changed, 148 insertions, 0 deletions
diff --git a/src/libcamera/camera.cpp b/src/libcamera/camera.cpp
index 0eecee76..b940647d 100644
--- a/src/libcamera/camera.cpp
+++ b/src/libcamera/camera.cpp
@@ -97,6 +97,16 @@
* implemented in the above order at the hardware level. The libcamera pipeline
* handlers translate the pipeline model to the real hardware configuration.
*
+ * \subsection camera-sensor-model Camera Sensor Model
+ *
+ * By default, libcamera configures the camera sensor automatically based on the
+ * configuration of the streams. Applications may instead specify a manual
+ * configuration for the camera sensor. This allows precise control of the frame
+ * geometry and frame rate delivered by the sensor.
+ *
+ * More details about the camera sensor model implemented by libcamera are
+ * available in the libcamera camera-sensor-model documentation page.
+ *
* \subsection digital-zoom Digital Zoom
*
* Digital zoom is implemented as a combination of the cropping and scaling
@@ -112,6 +122,127 @@ namespace libcamera {
LOG_DECLARE_CATEGORY(Camera)
/**
+ * \class SensorConfiguration
+ * \brief Camera sensor configuration
+ *
+ * The SensorConfiguration class collects parameters to control the operations
+ * of the camera sensor, according to the abstract camera sensor model
+ * implemented by libcamera.
+ *
+ * \todo Applications shall fully populate all fields of the
+ * CameraConfiguration::sensorConfig class members before validating the
+ * CameraConfiguration. If the SensorConfiguration is not fully populated, or if
+ * any of its parameters cannot be applied to the sensor in use, the
+ * CameraConfiguration validation process will fail and return
+ * CameraConfiguration::Status::Invalid.
+ *
+ * Applications that populate the SensorConfiguration class members are
+ * expected to be highly-specialized applications that know what sensor
+ * they are operating with and what parameters are valid for the sensor in use.
+ *
+ * A detailed description of the abstract camera sensor model implemented by
+ * libcamera and the description of its configuration parameters is available
+ * in the libcamera documentation camera-sensor-model file.
+ */
+
+/**
+ * \var SensorConfiguration::bitDepth
+ * \brief The sensor image format bit depth
+ *
+ * The number of bits (resolution) used to represent a pixel sample.
+ */
+
+/**
+ * \var SensorConfiguration::analogCrop
+ * \brief The analog crop rectangle
+ *
+ * The selected portion of the active pixel array used to produce the image
+ * frame.
+ */
+
+/**
+ * \var SensorConfiguration::binning
+ * \brief Sensor binning configuration
+ *
+ * Refer to the camera-sensor-model documentation for an accurate description
+ * of the binning operations. Disabled by default.
+ */
+
+/**
+ * \var SensorConfiguration::binX
+ * \brief Horizontal binning factor
+ *
+ * The horizontal binning factor. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::binY
+ * \brief Vertical binning factor
+ *
+ * The vertical binning factor. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::skipping
+ * \brief The sensor skipping configuration
+ *
+ * Refer to the camera-sensor-model documentation for an accurate description
+ * of the skipping operations.
+ *
+ * If no skipping is performed, all the structure fields should be
+ * set to 1. Disabled by default.
+ */
+
+/**
+ * \var SensorConfiguration::xOddInc
+ * \brief Horizontal increment for odd rows. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::xEvenInc
+ * \brief Horizontal increment for even rows. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::yOddInc
+ * \brief Vertical increment for odd columns. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::yEvenInc
+ * \brief Vertical increment for even columns. Default to 1.
+ */
+
+/**
+ * \var SensorConfiguration::outputSize
+ * \brief The frame output (visible) size
+ *
+ * The size of the data frame as received by the host processor.
+ */
+
+/**
+ * \brief Check if the sensor configuration is valid
+ *
+ * A sensor configuration is valid if it's fully populated.
+ *
+ * \todo For now allow applications to populate the bitDepth and the outputSize
+ * only as skipping and binnings factors are initialized to 1 and the analog
+ * crop is ignored.
+ *
+ * \return True if the sensor configuration is valid, false otherwise
+ */
+bool SensorConfiguration::isValid() const
+{
+ if (bitDepth && binning.binX && binning.binY &&
+ skipping.xOddInc && skipping.yOddInc &&
+ skipping.xEvenInc && skipping.yEvenInc &&
+ !outputSize.isNull())
+ return true;
+
+ return false;
+}
+
+/**
* \class CameraConfiguration
* \brief Hold configuration for streams of the camera
@@ -392,6 +523,23 @@ CameraConfiguration::Status CameraConfiguration::validateColorSpaces(ColorSpaceF
}
/**
+ * \var CameraConfiguration::sensorConfig
+ * \brief The camera sensor configuration
+ *
+ * The sensorConfig member allows manual control of the configuration of the
+ * camera sensor. By default, if sensorConfig is not set, the camera will
+ * configure the sensor automatically based on the configuration of the streams.
+ * Applications can override this by manually specifying the full sensor
+ * configuration.
+ *
+ * Refer to the camera-sensor-model documentation and to the SensorConfiguration
+ * class documentation for details about the sensor configuration process.
+ *
+ * The camera sensor configuration applies to all streams produced by a camera
+ * from the same image source.
+ */
+
+/**
* \var CameraConfiguration::transform
* \brief User-specified transform to be applied to the image
*