diff options
| -rw-r--r-- | include/libcamera/camera.h | 27 | ||||
| -rw-r--r-- | src/libcamera/camera.cpp | 148 |
2 files changed, 175 insertions, 0 deletions
diff --git a/include/libcamera/camera.h b/include/libcamera/camera.h index 004bc894..decf4ec0 100644 --- a/include/libcamera/camera.h +++ b/include/libcamera/camera.h @@ -9,6 +9,7 @@ #include <initializer_list> #include <memory> +#include <optional> #include <set> #include <stdint.h> #include <string> @@ -19,6 +20,7 @@ #include <libcamera/base/signal.h> #include <libcamera/controls.h> +#include <libcamera/geometry.h> #include <libcamera/request.h> #include <libcamera/stream.h> #include <libcamera/transform.h> @@ -30,6 +32,30 @@ class FrameBufferAllocator; class PipelineHandler; class Request; +class SensorConfiguration +{ +public: + unsigned int bitDepth = 0; + + Rectangle analogCrop; + + struct { + unsigned int binX = 1; + unsigned int binY = 1; + } binning; + + struct { + unsigned int xOddInc = 1; + unsigned int xEvenInc = 1; + unsigned int yOddInc = 1; + unsigned int yEvenInc = 1; + } skipping; + + Size outputSize; + + bool isValid() const; +}; + class CameraConfiguration { public: @@ -66,6 +92,7 @@ public: bool empty() const; std::size_t size() const; + std::optional<SensorConfiguration> sensorConfig; Transform transform; protected: 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 * |