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/* 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 <map>
#include <stdint.h>
#include <string>
#include <vector>
#include <linux/v4l2-controls.h>
#include <linux/videodev2.h>
#include <libcamera/controls.h>
namespace libcamera {
class V4L2ControlId : public ControlId
{
public:
V4L2ControlId(const struct v4l2_query_ext_ctrl &ctrl);
};
class V4L2ControlInfo
{
public:
V4L2ControlInfo(const struct v4l2_query_ext_ctrl &ctrl);
const ControlId &id() const { return id_; }
size_t size() const { return size_; }
const ControlRange &range() const { return range_; }
private:
V4L2ControlId id_;
size_t size_;
ControlRange range_;
};
class V4L2ControlInfoMap : private std::map<unsigned int, V4L2ControlInfo>
{
public:
V4L2ControlInfoMap &operator=(std::map<unsigned int, V4L2ControlInfo> &&info);
using std::map<unsigned int, V4L2ControlInfo>::begin;
using std::map<unsigned int, V4L2ControlInfo>::cbegin;
using std::map<unsigned int, V4L2ControlInfo>::end;
using std::map<unsigned int, V4L2ControlInfo>::cend;
using std::map<unsigned int, V4L2ControlInfo>::at;
using std::map<unsigned int, V4L2ControlInfo>::empty;
using std::map<unsigned int, V4L2ControlInfo>::size;
using std::map<unsigned int, V4L2ControlInfo>::count;
using std::map<unsigned int, V4L2ControlInfo>::find;
};
class V4L2Control
{
public:
V4L2Control(unsigned int id, const ControlValue &value = ControlValue())
: id_(id), value_(value)
{
}
unsigned int id() const { return id_; }
const ControlValue &value() const { return value_; }
ControlValue &value() { return value_; }
private:
unsigned int id_;
ControlValue 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__ */
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