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//
// Copyright 2014 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
#ifndef LIBANGLE_ATTRIBUTEMAP_H_
#define LIBANGLE_ATTRIBUTEMAP_H_
#include "common/FastVector.h"
#include "common/PackedEnums.h"
#include <EGL/egl.h>
#include <functional>
#include <vector>
namespace egl
{
class Display;
struct ValidationContext;
// Validates {key, value} for each attribute. Generates an error and returns false on invalid usage.
using AttributeValidationFunc =
std::function<bool(const ValidationContext *, const Display *, EGLAttrib)>;
class AttributeMap final
{
public:
static constexpr size_t kMapSize = 2;
using Map = angle::FlatUnorderedMap<EGLAttrib, EGLAttrib, kMapSize>;
AttributeMap();
AttributeMap(const AttributeMap &other);
AttributeMap &operator=(const AttributeMap &other);
~AttributeMap();
void insert(EGLAttrib key, EGLAttrib value);
bool contains(EGLAttrib key) const;
EGLAttrib get(EGLAttrib key) const;
EGLAttrib get(EGLAttrib key, EGLAttrib defaultValue) const;
EGLint getAsInt(EGLAttrib key) const;
EGLint getAsInt(EGLAttrib key, EGLint defaultValue) const;
template <typename PackedEnumT>
PackedEnumT getAsPackedEnum(EGLAttrib key) const
{
return FromEGLenum<PackedEnumT>(static_cast<EGLenum>(get(key)));
}
using const_iterator = Map::const_iterator;
template <typename PackedEnumT>
PackedEnumT getAsPackedEnum(EGLAttrib key, PackedEnumT defaultValue) const
{
const_iterator iter = attribs().find(key);
return (attribs().find(key) != attribs().end())
? FromEGLenum<PackedEnumT>(static_cast<EGLenum>(iter->second))
: defaultValue;
}
bool isEmpty() const;
std::vector<EGLint> toIntVector() const;
const_iterator begin() const;
const_iterator end() const;
[[nodiscard]] bool validate(const ValidationContext *val,
const egl::Display *display,
AttributeValidationFunc validationFunc) const;
// TODO: remove this and validate at every call site. http://anglebug.com/6671
void initializeWithoutValidation() const;
static AttributeMap CreateFromIntArray(const EGLint *attributes);
static AttributeMap CreateFromAttribArray(const EGLAttrib *attributes);
private:
bool isValidated() const;
const Map &attribs() const
{
ASSERT(isValidated());
return mValidatedAttributes;
}
Map &attribs()
{
ASSERT(isValidated());
return mValidatedAttributes;
}
mutable const EGLint *mIntPointer = nullptr;
mutable const EGLAttrib *mAttribPointer = nullptr;
mutable Map mValidatedAttributes;
};
} // namespace egl
#endif // LIBANGLE_ATTRIBUTEMAP_H_
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