6f6e1bf704
Augment the CameraSensor::setFormat() function to configure horizontal and vertical flips before applying the image format on the sensor. Applying flips before format is crucial as they might change the Bayer pattern ordering. To allow users of the CameraSensor class to specify a Transform, add to the V4L2SubdeviceFormat class a 'transform' member, by default initialized to Transform::Identity. Moving the handling of H/V flips to the CameraSensor class allows to remove quite some boilerplate code from the IPU3 and RaspberryPi pipeline handlers. No functional changes intended. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: David Plowman <david.plowman@raspberrypi.com>
120 lines
2.7 KiB
C++
120 lines
2.7 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_subdevice.h - V4L2 Subdevice
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*/
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#pragma once
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#include <memory>
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#include <optional>
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#include <ostream>
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#include <string>
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#include <vector>
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#include <linux/v4l2-subdev.h>
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#include <libcamera/base/class.h>
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#include <libcamera/base/log.h>
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#include <libcamera/color_space.h>
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#include <libcamera/geometry.h>
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#include <libcamera/transform.h>
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#include "libcamera/internal/formats.h"
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#include "libcamera/internal/media_object.h"
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#include "libcamera/internal/v4l2_device.h"
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namespace libcamera {
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class MediaDevice;
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struct V4L2SubdeviceCapability final : v4l2_subdev_capability {
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bool isReadOnly() const
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{
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return capabilities & V4L2_SUBDEV_CAP_RO_SUBDEV;
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}
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bool hasStreams() const
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{
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return capabilities & V4L2_SUBDEV_CAP_MPLEXED;
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}
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};
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struct V4L2SubdeviceFormat {
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uint32_t mbus_code;
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Size size;
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std::optional<ColorSpace> colorSpace;
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Transform transform = Transform::Identity;
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const std::string toString() const;
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uint8_t bitsPerPixel() const;
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};
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std::ostream &operator<<(std::ostream &out, const V4L2SubdeviceFormat &f);
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class V4L2Subdevice : public V4L2Device
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{
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public:
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using Formats = std::map<unsigned int, std::vector<SizeRange>>;
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enum Whence {
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TryFormat = V4L2_SUBDEV_FORMAT_TRY,
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ActiveFormat = V4L2_SUBDEV_FORMAT_ACTIVE,
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};
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class Routing : public std::vector<struct v4l2_subdev_route>
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{
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public:
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std::string toString() const;
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};
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explicit V4L2Subdevice(const MediaEntity *entity);
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~V4L2Subdevice();
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int open();
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const MediaEntity *entity() const { return entity_; }
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int getSelection(unsigned int pad, unsigned int target,
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Rectangle *rect);
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int setSelection(unsigned int pad, unsigned int target,
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Rectangle *rect);
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Formats formats(unsigned int pad);
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int getFormat(unsigned int pad, V4L2SubdeviceFormat *format,
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Whence whence = ActiveFormat);
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int setFormat(unsigned int pad, V4L2SubdeviceFormat *format,
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Whence whence = ActiveFormat);
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int getRouting(Routing *routing, Whence whence = ActiveFormat);
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int setRouting(Routing *routing, Whence whence = ActiveFormat);
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const std::string &model();
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const V4L2SubdeviceCapability &caps() const { return caps_; }
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static std::unique_ptr<V4L2Subdevice>
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fromEntityName(const MediaDevice *media, const std::string &entity);
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protected:
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std::string logPrefix() const override;
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private:
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LIBCAMERA_DISABLE_COPY(V4L2Subdevice)
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std::optional<ColorSpace>
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toColorSpace(const v4l2_mbus_framefmt &format) const;
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std::vector<unsigned int> enumPadCodes(unsigned int pad);
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std::vector<SizeRange> enumPadSizes(unsigned int pad,
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unsigned int code);
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const MediaEntity *entity_;
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std::string model_;
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struct V4L2SubdeviceCapability caps_;
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};
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} /* namespace libcamera */
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