libcamera/src/libcamera/include/v4l2_subdevice.h
Jacopo Mondi 0e36d26dad libcamera: v4l2_subdevice: Implement getSelection()
Implement V4L2Subdevice::getSelection() to support retrieving selection
rectangles from the V4L2 subdevice.

Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
2020-04-28 22:25:21 +02:00

77 lines
1.7 KiB
C++

/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2019, Google Inc.
*
* v4l2_subdevice.h - V4L2 Subdevice
*/
#ifndef __LIBCAMERA_V4L2_SUBDEVICE_H__
#define __LIBCAMERA_V4L2_SUBDEVICE_H__
#include <map>
#include <string>
#include <vector>
#include <libcamera/geometry.h>
#include "formats.h"
#include "log.h"
#include "media_object.h"
#include "v4l2_device.h"
namespace libcamera {
class MediaDevice;
struct V4L2SubdeviceFormat {
uint32_t mbus_code;
Size size;
const std::string toString() const;
};
class V4L2Subdevice : public V4L2Device
{
public:
enum Whence {
ActiveFormat,
TryFormat,
};
explicit V4L2Subdevice(const MediaEntity *entity);
V4L2Subdevice(const V4L2Subdevice &) = delete;
V4L2Subdevice &operator=(const V4L2Subdevice &) = delete;
~V4L2Subdevice();
int open();
const MediaEntity *entity() const { return entity_; }
int getSelection(unsigned int pad, unsigned int target,
Rectangle *rect);
int setSelection(unsigned int pad, unsigned int target,
Rectangle *rect);
ImageFormats formats(unsigned int pad);
int getFormat(unsigned int pad, V4L2SubdeviceFormat *format,
Whence whence = ActiveFormat);
int setFormat(unsigned int pad, V4L2SubdeviceFormat *format,
Whence whence = ActiveFormat);
static V4L2Subdevice *fromEntityName(const MediaDevice *media,
const std::string &entity);
protected:
std::string logPrefix() const;
private:
std::vector<unsigned int> enumPadCodes(unsigned int pad);
std::vector<SizeRange> enumPadSizes(unsigned int pad,
unsigned int code);
const MediaEntity *entity_;
};
} /* namespace libcamera */
#endif /* __LIBCAMERA_V4L2_SUBDEVICE_H__ */