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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* v4l2_device.h - Common base for V4L2 video devices and subdevices
*/
#ifndef __LIBCAMERA_V4L2_DEVICE_H__
#define __LIBCAMERA_V4L2_DEVICE_H__
#include <map>
#include <string>
#include <linux/videodev2.h>
#include "log.h"
#include "v4l2_controls.h"
namespace libcamera {
class V4L2Device : protected Loggable
{
public:
void close();
bool isOpen() const { return fd_ != -1; }
const V4L2ControlInfoMap &controls() const { return controls_; }
int getControls(V4L2ControlList *ctrls);
int setControls(V4L2ControlList *ctrls);
const std::string &deviceNode() const { return deviceNode_; }
protected:
V4L2Device(const std::string &deviceNode);
~V4L2Device();
int open(unsigned int flags);
int ioctl(unsigned long request, void *argp);
int fd() { return fd_; }
private:
void listControls();
void updateControls(V4L2ControlList *ctrls,
const V4L2ControlInfo **controlInfo,
const struct v4l2_ext_control *v4l2Ctrls,
unsigned int count);
V4L2ControlInfoMap controls_;
std::string deviceNode_;
int fd_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_V4L2_DEVICE_H__ */
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