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/*
* Copyright (C) 2020 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.
*/
#define LOG_TAG "hwc-backend"
#include "BackendManager.h"
#include "utils/log.h"
#include "utils/properties.h"
namespace android {
// NOLINTNEXTLINE(cert-err58-cpp)
const std::vector<std::string> BackendManager::kClientDevices = {
"kirin",
"mediatek-drm",
"pl111",
};
BackendManager &BackendManager::GetInstance() {
static BackendManager backend_manager;
return backend_manager;
}
int BackendManager::RegisterBackend(const std::string &name,
BackendConstructorT backend_constructor) {
available_backends_[name] = std::move(backend_constructor);
return 0;
}
int BackendManager::SetBackendForDisplay(HwcDisplay *display) {
auto driver_name(display->GetPipe().device->GetName());
char backend_override[PROPERTY_VALUE_MAX];
property_get("vendor.hwc.backend_override", backend_override,
driver_name.c_str());
std::string backend_name(backend_override);
display->set_backend(GetBackendByName(backend_name));
if (display->backend() == nullptr) {
ALOGE("Failed to set backend '%s' for '%s' and driver '%s'",
backend_name.c_str(),
display->GetPipe().connector->Get()->GetName().c_str(),
driver_name.c_str());
return -EINVAL;
}
ALOGI("Backend '%s' for '%s' and driver '%s' was successfully set",
backend_name.c_str(),
display->GetPipe().connector->Get()->GetName().c_str(),
driver_name.c_str());
return 0;
}
std::unique_ptr<Backend> BackendManager::GetBackendByName(std::string &name) {
if (available_backends_.empty()) {
ALOGE("No backends are specified");
return nullptr;
}
auto it = available_backends_.find(name);
if (it == available_backends_.end()) {
auto it = std::find(kClientDevices.begin(), kClientDevices.end(), name);
name = it == kClientDevices.end() ? "generic" : "client";
}
return available_backends_[name]();
}
} // namespace android
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