Files
external_libcamera/include/libcamera/internal/camera_sensor.h
Jacopo Mondi 8502d4c52d libcamera: camera_sensor: Validate driver support
The CameraSensor class requires the sensor driver to report
information through V4L2 controls and through the V4L2 selection API,
and uses that information to register Camera properties and to
construct CameraSensorInfo class instances to provide them to the IPA.

Currently, validation of the kernel support happens each time a
feature is requested, with slighly similar debug/error messages
output to the user in case a feature is not supported.

Rationalize this by validating the sensor driver requirements in a
single function

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2021-01-18 10:39:13 +01:00

93 lines
2.1 KiB
C++

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* camera_sensor.h - A camera sensor
*/
#ifndef __LIBCAMERA_INTERNAL_CAMERA_SENSOR_H__
#define __LIBCAMERA_INTERNAL_CAMERA_SENSOR_H__
#include <memory>
#include <string>
#include <vector>
#include <libcamera/controls.h>
#include <libcamera/geometry.h>
#include "libcamera/internal/formats.h"
#include "libcamera/internal/log.h"
#include "libcamera/internal/v4l2_subdevice.h"
namespace libcamera {
class MediaEntity;
struct CameraSensorInfo {
std::string model;
uint32_t bitsPerPixel;
Size activeAreaSize;
Rectangle analogCrop;
Size outputSize;
uint64_t pixelRate;
uint32_t lineLength;
};
class CameraSensor : protected Loggable
{
public:
explicit CameraSensor(const MediaEntity *entity);
~CameraSensor();
CameraSensor(const CameraSensor &) = delete;
CameraSensor &operator=(const CameraSensor &) = delete;
int init();
const std::string &model() const { return model_; }
const std::string &id() const { return id_; }
const MediaEntity *entity() const { return entity_; }
const std::vector<unsigned int> &mbusCodes() const { return mbusCodes_; }
const std::vector<Size> &sizes() const { return sizes_; }
const Size &resolution() const { return resolution_; }
V4L2SubdeviceFormat getFormat(const std::vector<unsigned int> &mbusCodes,
const Size &size) const;
int setFormat(V4L2SubdeviceFormat *format);
const ControlInfoMap &controls() const;
ControlList getControls(const std::vector<uint32_t> &ids);
int setControls(ControlList *ctrls);
const ControlList &properties() const { return properties_; }
int sensorInfo(CameraSensorInfo *info) const;
protected:
std::string logPrefix() const override;
private:
int generateId();
int validateSensorDriver();
int initProperties();
const MediaEntity *entity_;
std::unique_ptr<V4L2Subdevice> subdev_;
unsigned int pad_;
std::string model_;
std::string id_;
V4L2Subdevice::Formats formats_;
Size resolution_;
std::vector<unsigned int> mbusCodes_;
std::vector<Size> sizes_;
ControlList properties_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_INTERNAL_CAMERA_SENSOR_H__ */