mirror of
https://git.libcamera.org/libcamera/libcamera.git
synced 2025-07-22 16:15:09 +03:00
bab8b01895
Add libcamera V4L2 control support, implemented using the V4L2 Extended Control APIs. This patch defines the types used to create and manage controls. Signed-off-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
80 lines
1.7 KiB
C++
80 lines
1.7 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
|
|
/*
|
|
* Copyright (C) 2019, Google Inc.
|
|
*
|
|
* v4l2_controls.h - V4L2 Controls Support
|
|
*/
|
|
|
|
#ifndef __LIBCAMERA_V4L2_CONTROLS_H__
|
|
#define __LIBCAMERA_V4L2_CONTROLS_H__
|
|
|
|
#include <string>
|
|
#include <vector>
|
|
|
|
#include <stdint.h>
|
|
|
|
#include <linux/v4l2-controls.h>
|
|
#include <linux/videodev2.h>
|
|
|
|
namespace libcamera {
|
|
|
|
class V4L2ControlInfo
|
|
{
|
|
public:
|
|
V4L2ControlInfo(const struct v4l2_query_ext_ctrl &ctrl);
|
|
|
|
unsigned int id() const { return id_; }
|
|
unsigned int type() const { return type_; }
|
|
size_t size() const { return size_; }
|
|
const std::string &name() const { return name_; }
|
|
|
|
private:
|
|
unsigned int id_;
|
|
unsigned int type_;
|
|
size_t size_;
|
|
std::string name_;
|
|
};
|
|
|
|
class V4L2Control
|
|
{
|
|
public:
|
|
V4L2Control(unsigned int id, int value = 0)
|
|
: id_(id), value_(value) {}
|
|
|
|
int64_t value() const { return value_; }
|
|
void setValue(int64_t value) { value_ = value; }
|
|
|
|
unsigned int id() const { return id_; }
|
|
|
|
private:
|
|
unsigned int id_;
|
|
int64_t value_;
|
|
};
|
|
|
|
class V4L2ControlList
|
|
{
|
|
public:
|
|
using iterator = std::vector<V4L2Control>::iterator;
|
|
using const_iterator = std::vector<V4L2Control>::const_iterator;
|
|
|
|
iterator begin() { return controls_.begin(); }
|
|
const_iterator begin() const { return controls_.begin(); }
|
|
iterator end() { return controls_.end(); }
|
|
const_iterator end() const { return controls_.end(); }
|
|
|
|
bool empty() const { return controls_.empty(); }
|
|
std::size_t size() const { return controls_.size(); }
|
|
|
|
void clear() { controls_.clear(); }
|
|
void add(unsigned int id, int64_t value = 0);
|
|
|
|
V4L2Control *getByIndex(unsigned int index);
|
|
V4L2Control *operator[](unsigned int id);
|
|
|
|
private:
|
|
std::vector<V4L2Control> controls_;
|
|
};
|
|
|
|
} /* namespace libcamera */
|
|
|
|
#endif /* __LIBCAMERA_V4L2_CONTROLS_H__ */
|