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path: root/src/android/camera_capabilities.h
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2021, Google Inc.
 *
 * Camera static properties manager
 */

#pragma once

#include <map>
#include <memory>
#include <set>
#include <vector>

#include <libcamera/base/class.h>

#include <libcamera/camera.h>
#include <libcamera/formats.h>
#include <libcamera/geometry.h>

#include "camera_metadata.h"

class CameraCapabilities
{
public:
	CameraCapabilities() = default;

	int initialize(std::shared_ptr<libcamera::Camera> camera,
		       int orientation, int facing);

	CameraMetadata *staticMetadata() const { return staticMetadata_.get(); }
	libcamera::PixelFormat toPixelFormat(int format) const;
	unsigned int maxJpegBufferSize() const { return maxJpegBufferSize_; }

	std::unique_ptr<CameraMetadata> requestTemplateManual() const;
	std::unique_ptr<CameraMetadata> requestTemplatePreview() const;
	std::unique_ptr<CameraMetadata> requestTemplateStill() const;
	std::unique_ptr<CameraMetadata> requestTemplateVideo() const;

private:
	LIBCAMERA_DISABLE_COPY_AND_MOVE(CameraCapabilities)

	struct Camera3StreamConfiguration {
		libcamera::Size resolution;
		int androidFormat;
		int64_t minFrameDurationNsec;
		int64_t maxFrameDurationNsec;
	};

	bool validateManualSensorCapability();
	bool validateManualPostProcessingCapability();
	bool validateBurstCaptureCapability();

	std::set<camera_metadata_enum_android_request_available_capabilities>
		computeCapabilities();

	void computeHwLevel(
		const std::set<camera_metadata_enum_android_request_available_capabilities> &caps);

	std::vector<libcamera::Size>
	initializeYUVResolutions(const libcamera::PixelFormat &pixelFormat,
				 const std::vector<libcamera::Size> &resolutions);
	std::vector<libcamera::Size>
	initializeRawResolutions(const libcamera::PixelFormat &pixelFormat);
	int initializeStreamConfigurations();

	int initializeStaticMetadata();

	std::shared_ptr<libcamera::Camera> camera_;

	int facing_;
	int orientation_;
	bool rawStreamAvailable_;
	int64_t maxFrameDuration_;
	camera_metadata_enum_android_info_supported_hardware_level hwLevel_;
	std::set<camera_metadata_enum_android_request_available_capabilities> capabilities_;

	std::vector<Camera3StreamConfiguration> streamConfigurations_;
	std::map<int, libcamera::PixelFormat> formatsMap_;
	std::unique_ptr<CameraMetadata> staticMetadata_;
	unsigned int maxJpegBufferSize_;

	std::set<int32_t> availableCharacteristicsKeys_;
	std::set<int32_t> availableRequestKeys_;
	std::set<int32_t> availableResultKeys_;
};
hl opt">(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_prepare_buf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_qbuf(V4L2CameraFile *file, struct v4l2_buffer *arg); int vidioc_dqbuf(V4L2CameraFile *file, struct v4l2_buffer *arg, libcamera::Mutex *lock) LIBCAMERA_TSA_REQUIRES(*lock); int vidioc_expbuf(V4L2CameraFile *file, struct v4l2_exportbuffer *arg); int vidioc_streamon(V4L2CameraFile *file, int *arg); int vidioc_streamoff(V4L2CameraFile *file, int *arg); int vidioc_s_parm(V4L2CameraFile *file, struct v4l2_streamparm *arg); bool hasOwnership(V4L2CameraFile *file); int acquire(V4L2CameraFile *file); void release(V4L2CameraFile *file); static const std::set<unsigned long> supportedIoctls_; unsigned int refcount_; unsigned int index_; libcamera::StreamConfiguration streamConfig_; unsigned int bufferCount_; unsigned int currentBuf_; unsigned int sizeimage_; struct v4l2_capability capabilities_; struct v4l2_pix_format v4l2PixFormat_; std::vector<struct v4l2_buffer> buffers_; std::map<void *, unsigned int> mmaps_; std::set<V4L2CameraFile *> files_; std::unique_ptr<V4L2Camera> vcam_; /* * This is the exclusive owner of this V4L2CameraProxy instance. * When there is no owner, anybody can call any ioctl before reqbufs. * The first file to call reqbufs with count > 0 or s_fmt will become * the owner, and when the owner calls reqbufs with count = 0 it will * release ownership. Any buffer-related ioctl (except querybuf) or * s_fmt that is called by a non-owner while there exists an owner * will return -EBUSY. */ V4L2CameraFile *owner_; /* This mutex is to serialize access to the proxy. */ libcamera::Mutex proxyMutex_; };