91122dea97
The minimum and maximum vblanking can change when a new format is applied to the sensor subdevice, so be sure to retrieve up-to-date values. The V4L2Device acquires the new updateControlInfo() method to perform this function, and which the CameraSensor calls automatically if its setFormat method is used to update the sensor. However, not all pipeline handlers invoke the setFormat method directly, so the new method must be made publicly available for pipeline handlers to call if they need to. Signed-off-by: David Plowman <david.plowman@raspberrypi.com> Reviewed-by: Jacopo Mondi <jacopo@jmondi.org> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
78 lines
1.7 KiB
C++
78 lines
1.7 KiB
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2019, Google Inc.
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*
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* v4l2_device.h - Common base for V4L2 video devices and subdevices
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*/
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#ifndef __LIBCAMERA_INTERNAL_V4L2_DEVICE_H__
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#define __LIBCAMERA_INTERNAL_V4L2_DEVICE_H__
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#include <map>
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#include <memory>
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#include <vector>
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#include <linux/videodev2.h>
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#include <libcamera/signal.h>
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#include <libcamera/span.h>
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#include "libcamera/internal/log.h"
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#include "libcamera/internal/v4l2_controls.h"
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namespace libcamera {
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class EventNotifier;
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class V4L2Device : protected Loggable
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{
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public:
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void close();
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bool isOpen() const { return fd_ != -1; }
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const ControlInfoMap &controls() const { return controls_; }
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ControlList getControls(const std::vector<uint32_t> &ids);
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int setControls(ControlList *ctrls);
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const struct v4l2_query_ext_ctrl *controlInfo(uint32_t id) const;
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const std::string &deviceNode() const { return deviceNode_; }
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std::string devicePath() const;
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int setFrameStartEnabled(bool enable);
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Signal<uint32_t> frameStart;
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void updateControlInfo();
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protected:
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V4L2Device(const std::string &deviceNode);
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~V4L2Device();
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int open(unsigned int flags);
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int setFd(int fd);
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int ioctl(unsigned long request, void *argp);
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int fd() const { return fd_; }
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private:
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void listControls();
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void updateControls(ControlList *ctrls,
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Span<const v4l2_ext_control> v4l2Ctrls);
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void eventAvailable(EventNotifier *notifier);
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std::map<unsigned int, struct v4l2_query_ext_ctrl> controlInfo_;
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std::vector<std::unique_ptr<V4L2ControlId>> controlIds_;
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ControlInfoMap controls_;
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std::string deviceNode_;
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int fd_;
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EventNotifier *fdEventNotifier_;
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bool frameStartEnabled_;
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};
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} /* namespace libcamera */
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#endif /* __LIBCAMERA_INTERNAL_V4L2_DEVICE_H__ */
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