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authorJacopo Mondi <jacopo@jmondi.org>2021-03-08 17:03:14 +0100
committerJacopo Mondi <jacopo@jmondi.org>2021-03-09 08:59:25 +0100
commitf179616ec7dab5ab0276657386e7c61d024d2169 (patch)
tree510fcebefc354696e1a1909da03b3a930f168729 /src/qcam/assets/feathericons/alert-circle.svg
parent2c34991d16caf54a7bc32eb607a712b8b973c1eb (diff)
android: camera_device: Fail template on no FPS range
The camera supported FPS range is crucial to distinguish between capture templates for preview and video recording. If the pipeline handler did not specify an available FPS range by registering the controls::FrameDurations property so far the control was simply not added to the generated capture template. In order to prepare to generate templates for video recording which require a fixed FPS range, fail earlier in generating any template at all if the available FPS range is not provided by the Camera. Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Diffstat (limited to 'src/qcam/assets/feathericons/alert-circle.svg')
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generated by cgit v1.2.1 (git 2.18.0) at 2025-02-08 19:08:08 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2019, Google Inc.
 *
 * controls.h - Control handling
 */

#ifndef __LIBCAMERA_CONTROLS_H__
#define __LIBCAMERA_CONTROLS_H__

#include <assert.h>
#include <stdint.h>
#include <string>
#include <unordered_map>

#include <libcamera/span.h>

namespace libcamera {

class ControlValidator;

enum ControlType {
	ControlTypeNone,
	ControlTypeBool,
	ControlTypeByte,
	ControlTypeInteger32,
	ControlTypeInteger64,
	ControlTypeFloat,
};

namespace details {

template<typename T>
struct control_type {
};

template<>
struct control_type<void> {
	static constexpr ControlType value = ControlTypeNone;
};

template<>
struct control_type<bool> {
	static constexpr ControlType value = ControlTypeBool;
};

template<>
struct control_type<uint8_t> {
	static constexpr ControlType value = ControlTypeByte;
};

template<>
struct control_type<int32_t> {
	static constexpr ControlType value = ControlTypeInteger32;
};

template<>
struct control_type<int64_t> {
	static constexpr ControlType value = ControlTypeInteger64;
};

template<>
struct control_type<float> {
	static constexpr ControlType value = ControlTypeFloat;
};

template<typename T, std::size_t N>
struct control_type<Span<T, N>> : public control_type<std::remove_cv_t<T>> {
};

} /* namespace details */

class ControlValue
{
public:
	ControlValue();

#ifndef __DOXYGEN__
	template<typename T, typename std::enable_if_t<!details::is_span<T>::value, std::nullptr_t> = nullptr>
	ControlValue(const T &value)
		: type_(ControlTypeNone), numElements_(0)
	{
		set(details::control_type<std::remove_cv_t<T>>::value, false,
		    &value, 1, sizeof(T));
	}

	template<typename T, typename std::enable_if_t<details::is_span<T>::value, std::nullptr_t> = nullptr>
#else
	template<typename T>
#endif
	ControlValue(const T &value)
		: type_(ControlTypeNone), numElements_(0)
	{
		set(details::control_type<std::remove_cv_t<T>>::value, true,
		    value.data(), value.size(), sizeof(typename T::value_type));
	}

	~ControlValue();

	ControlValue(const ControlValue &other);
	ControlValue &operator=(const ControlValue &other);

	ControlType type() const { return type_; }
	bool isNone() const { return type_ == ControlTypeNone; }
	bool isArray() const { return isArray_; }
	std::size_t numElements() const { return numElements_; }
	Span<const uint8_t> data() const;

	std::string toString() const;

	bool operator==(const ControlValue &other) const;
	bool operator!=(const ControlValue &other) const
	{
		return !(*this == other);
	}

#ifndef __DOXYGEN__
	template<typename T, typename std::enable_if_t<!details::is_span<T>::value, std::nullptr_t> = nullptr>
	T get() const
	{
		assert(type_ == details::control_type<std::remove_cv_t<T>>::value);
		assert(!isArray_);

		return *reinterpret_cast<const T *>(data().data());
	}

	template<typename T, typename std::enable_if_t<details::is_span<T>::value, std::nullptr_t> = nullptr>
#else
	template<typename T>
#endif
	T get() const
	{
		assert(type_ == details::control_type<std::remove_cv_t<T>>::value);
		assert(isArray_);

		using V = typename T::value_type;
		const V *value = reinterpret_cast<const V *>(data().data());
		return { value, numElements_ };
	}

#ifndef __DOXYGEN__
	template<typename T, typename std::enable_if_t<!details::is_span<T>::value, std::nullptr_t> = nullptr>
	void set(const T &value)
	{
		set(details::control_type<std::remove_cv_t<T>>::value, false,
		    reinterpret_cast<const void *>(&value), 1, sizeof(T));
	}

	template<typename T, typename std::enable_if_t<details::is_span<T>::value, std::nullptr_t> = nullptr>
#else
	template<typename T>
#endif
	void set(const T &value)
	{
		set(details::control_type<std::remove_cv_t<T>>::value, true,
		    value.data(), value.size(), sizeof(typename T::value_type));
	}

private:
	ControlType type_ : 8;
	bool isArray_ : 1;
	std::size_t numElements_ : 16;
	union {
		uint64_t value_;
		void *storage_;
	};

	void release();
	void set(ControlType type, bool isArray, const void *data,
		 std::size_t numElements, std::size_t elementSize);
};

static_assert(sizeof(ControlValue) == 16, "Invalid size of ControlValue class");

class ControlId
{
public:
	ControlId(unsigned int id, const std::string &name, ControlType type)
		: id_(id), name_(name), type_(type)
	{
	}

	unsigned int id() const { return id_; }
	const std::string &name() const { return name_; }
	ControlType type() const { return type_; }

private:
	ControlId &operator=(const ControlId &) = delete;
	ControlId(const ControlId &) = delete;

	unsigned int id_;
	std::string name_;
	ControlType type_;
};

static inline bool operator==(unsigned int lhs, const ControlId &rhs)
{
	return lhs == rhs.id();
}

static inline bool operator!=(unsigned int lhs, const ControlId &rhs)
{
	return !(lhs == rhs);
}

static inline bool operator==(const ControlId &lhs, unsigned int rhs)
{
	return lhs.id() == rhs;
}

static inline bool operator!=(const ControlId &lhs, unsigned int rhs)
{
	return !(lhs == rhs);
}

template<typename T>
class Control : public ControlId
{
public:
	using type = T;

	Control(unsigned int id, const char *name)
		: ControlId(id, name, details::control_type<std::remove_cv_t<T>>::value)
	{
	}

private:
	Control(const Control &) = delete;
	Control &operator=(const Control &) = delete;
};

class ControlRange
{
public:
	explicit ControlRange(const ControlValue &min = 0,
			      const ControlValue &max = 0,
			      const ControlValue &def = 0);

	const ControlValue &min() const { return min_; }
	const ControlValue &max() const { return max_; }
	const ControlValue &def() const { return def_; }

	std::string toString() const;

	bool operator==(const ControlRange &other) const
	{
		return min_ == other.min_ && max_ == other.max_;
	}

	bool operator!=(const ControlRange &other) const
	{
		return !(*this == other);
	}

private:
	ControlValue min_;
	ControlValue max_;
	ControlValue def_;
};

using ControlIdMap = std::unordered_map<unsigned int, const ControlId *>;

class ControlInfoMap : private std::unordered_map<const ControlId *, ControlRange>
{
public:
	using Map = std::unordered_map<const ControlId *, ControlRange>;

	ControlInfoMap() = default;
	ControlInfoMap(const ControlInfoMap &other) = default;
	ControlInfoMap(std::initializer_list<Map::value_type> init);
	ControlInfoMap(Map &&info);

	ControlInfoMap &operator=(const ControlInfoMap &other) = default;
	ControlInfoMap &operator=(std::initializer_list<Map::value_type> init);
	ControlInfoMap &operator=(Map &&info);

	using Map::key_type;
	using Map::mapped_type;
	using Map::value_type;
	using Map::size_type;
	using Map::iterator;
	using Map::const_iterator;

	using Map::begin;
	using Map::cbegin;
	using Map::end;
	using Map::cend;
	using Map::at;
	using Map::empty;
	using Map::size;
	using Map::count;
	using Map::find;

	mapped_type &at(unsigned int key);
	const mapped_type &at(unsigned int key) const;
	size_type count(unsigned int key) const;
	iterator find(unsigned int key);
	const_iterator find(unsigned int key) const;

	const ControlIdMap &idmap() const { return idmap_; }

private:
	void generateIdmap();

	ControlIdMap idmap_;
};

class ControlList
{
private:
	using ControlListMap = std::unordered_map<unsigned int, ControlValue>;

public:
	ControlList();
	ControlList(const ControlIdMap &idmap, ControlValidator *validator = nullptr);
	ControlList(const ControlInfoMap &infoMap, ControlValidator *validator = nullptr);

	using iterator = ControlListMap::iterator;
	using const_iterator = ControlListMap::const_iterator;

	iterator begin() { return controls_.begin(); }
	iterator end() { return controls_.end(); }
	const_iterator begin() const { return controls_.begin(); }
	const_iterator end() const { return controls_.end(); }

	bool empty() const { return controls_.empty(); }
	std::size_t size() const { return controls_.size(); }
	void clear() { controls_.clear(); }

	bool contains(const ControlId &id) const;
	bool contains(unsigned int id) const;

	template<typename T>
	T get(const Control<T> &ctrl) const
	{
		const ControlValue *val = find(ctrl.id());
		if (!val)
			return T{};

		return val->get<T>();
	}

	template<typename T, typename V>
	void set(const Control<T> &ctrl, const V &value)
	{
		ControlValue *val = find(ctrl.id());
		if (!val)
			return;

		val->set<T>(value);
	}

	template<typename T, typename V>