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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef ANDROID_DRM_PROPERTY_H_
#define ANDROID_DRM_PROPERTY_H_
#include <xf86drmMode.h>
#include <cstdint>
#include <map>
#include <string>
#include <vector>
namespace android {
enum DrmPropertyType {
DRM_PROPERTY_TYPE_INT,
DRM_PROPERTY_TYPE_ENUM,
DRM_PROPERTY_TYPE_OBJECT,
DRM_PROPERTY_TYPE_BLOB,
DRM_PROPERTY_TYPE_BITMASK,
DRM_PROPERTY_TYPE_INVALID,
};
class DrmProperty {
public:
DrmProperty() = default;
DrmProperty(uint32_t obj_id, drmModePropertyPtr p, uint64_t value);
DrmProperty(const DrmProperty &) = delete;
DrmProperty &operator=(const DrmProperty &) = delete;
auto Init(uint32_t obj_id, drmModePropertyPtr p, uint64_t value) -> void;
std::tuple<uint64_t, int> GetEnumValueWithName(const std::string &name) const;
uint32_t id() const;
std::string name() const;
std::tuple<int, uint64_t> value() const;
bool is_immutable() const;
bool is_range() const;
std::tuple<int, uint64_t> range_min() const;
std::tuple<int, uint64_t> range_max() const;
[[nodiscard]] auto AtomicSet(drmModeAtomicReq &pset, uint64_t value) const
-> bool;
template <class E>
auto AddEnumToMap(const std::string &name, E key, std::map<E, uint64_t> &map)
-> bool;
explicit operator bool() const {
return id_ != 0;
}
private:
class DrmPropertyEnum {
public:
explicit DrmPropertyEnum(drm_mode_property_enum *e);
~DrmPropertyEnum() = default;
uint64_t value_;
std::string name_;
};
uint32_t obj_id_ = 0;
uint32_t id_ = 0;
DrmPropertyType type_ = DRM_PROPERTY_TYPE_INVALID;
uint32_t flags_ = 0;
std::string name_;
uint64_t value_ = 0;
std::vector<uint64_t> values_;
std::vector<DrmPropertyEnum> enums_;
std::vector<uint32_t> blob_ids_;
};
template <class E>
auto DrmProperty::AddEnumToMap(const std::string &name, E key,
std::map<E, uint64_t> &map) -> bool {
uint64_t enum_value = UINT64_MAX;
int err = 0;
std::tie(enum_value, err) = GetEnumValueWithName(name);
if (err == 0) {
map[key] = enum_value;
return true;
}
return false;
}
} // namespace android
#endif // ANDROID_DRM_PROPERTY_H_
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