blob: 9e7b7984b01c7130d37cefbaa3c0992dfd07b3b1 [file] [log] [blame]
/*
* Copyright 2022 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.
*/
#pragma once
#include <android-base/logging.h>
#include <android-base/unique_fd.h>
#include <xf86drm.h>
#include <xf86drmMode.h>
#include <cstdint>
#include <string>
#include <unordered_map>
#include "Common.h"
namespace aidl::android::hardware::graphics::composer3::impl {
class DrmProperty {
public:
DrmProperty() {}
DrmProperty(uint32_t id, uint64_t value, std::string name)
: mId(id), mValue(value), mName(name) {}
~DrmProperty() {}
uint32_t getId() const { return mId; }
uint64_t getValue() const { return mValue; }
const std::string& getName() const { return mName; }
private:
uint32_t mId = -1;
uint64_t mValue = -1;
std::string mName;
};
template <typename T>
using DrmPropertyMember = DrmProperty T::*;
template <typename T>
using DrmPropertyMemberMap = std::unordered_map<std::string, DrmPropertyMember<T>>;
// Helper to many DrmProperty members for DrmCrtc, DrmConnector, and DrmPlane.
template <typename T>
bool LoadDrmProperties(::android::base::borrowed_fd drmFd, uint32_t objectId, uint32_t objectType,
const DrmPropertyMemberMap<T>& objectPropertyMap, T* object) {
auto drmProperties = drmModeObjectGetProperties(drmFd.get(), objectId, objectType);
if (!drmProperties) {
ALOGE("%s: Failed to get properties: %s", __FUNCTION__, strerror(errno));
return false;
}
for (uint32_t i = 0; i < drmProperties->count_props; ++i) {
const auto propertyId = drmProperties->props[i];
auto drmProperty = drmModeGetProperty(drmFd.get(), propertyId);
if (!drmProperty) {
ALOGE("%s: Failed to get property: %s", __FUNCTION__, strerror(errno));
continue;
}
const auto propertyName = drmProperty->name;
const auto propertyValue = drmProperties->prop_values[i];
auto it = objectPropertyMap.find(propertyName);
if (it != objectPropertyMap.end()) {
DEBUG_LOG("%s: Loaded property:%" PRIu32 " (%s) val:%" PRIu64, __FUNCTION__, propertyId,
propertyName, propertyValue);
auto& objectPointerToMember = it->second;
object->*objectPointerToMember = DrmProperty(propertyId, propertyValue, propertyName);
}
drmModeFreeProperty(drmProperty);
}
drmModeFreeObjectProperties(drmProperties);
return true;
}
} // namespace aidl::android::hardware::graphics::composer3::impl