wehub-resource-sync
94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
/* Copyright 2021 The TensorFlow Authors. All Rights Reserved.
|
|
|
|
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.
|
|
==============================================================================*/
|
|
|
|
// Changed when importing from AOSP
|
|
#include "tensorflow/lite/nnapi/sl/include/SupportLibrary.h"
|
|
|
|
// Changed when importing from AOSP
|
|
#include <dlfcn.h>
|
|
|
|
#include <cinttypes>
|
|
#include <memory>
|
|
#include <string>
|
|
|
|
#include "tensorflow/lite/minimal_logging.h"
|
|
#include "tensorflow/lite/nnapi/NeuralNetworksTypes.h"
|
|
|
|
namespace tflite {
|
|
namespace nnapi {
|
|
|
|
using tflite::TFLITE_LOG_ERROR;
|
|
|
|
std::unique_ptr<const NnApiSupportLibrary> loadNnApiSupportLibrary(
|
|
const std::string& libName) {
|
|
void* libHandle = dlopen(libName.c_str(), RTLD_LAZY | RTLD_LOCAL);
|
|
if (libHandle == nullptr) {
|
|
TFLITE_LOG(TFLITE_LOG_ERROR, "nnapi error: unable to open library %s: %s",
|
|
libName.c_str(), dlerror());
|
|
return nullptr;
|
|
}
|
|
|
|
auto result = loadNnApiSupportLibrary(libHandle);
|
|
if (!result) {
|
|
dlclose(libHandle);
|
|
}
|
|
return result;
|
|
}
|
|
|
|
std::unique_ptr<const NnApiSupportLibrary> loadNnApiSupportLibrary(
|
|
void* libHandle) {
|
|
NnApiSLDriverImpl* (*getSlDriverImpl)();
|
|
getSlDriverImpl = reinterpret_cast<decltype(getSlDriverImpl)>(
|
|
dlsym(libHandle, "ANeuralNetworks_getSLDriverImpl"));
|
|
if (getSlDriverImpl == nullptr) {
|
|
TFLITE_LOG(TFLITE_LOG_ERROR,
|
|
"Failed to find ANeuralNetworks_getSLDriverImpl symbol");
|
|
return nullptr;
|
|
}
|
|
|
|
NnApiSLDriverImpl* impl = getSlDriverImpl();
|
|
if (impl == nullptr) {
|
|
TFLITE_LOG(TFLITE_LOG_ERROR,
|
|
"ANeuralNetworks_getSLDriverImpl returned nullptr");
|
|
return nullptr;
|
|
}
|
|
|
|
if (impl->implFeatureLevel < ANEURALNETWORKS_FEATURE_LEVEL_5 ||
|
|
impl->implFeatureLevel > ANEURALNETWORKS_FEATURE_LEVEL_7) {
|
|
TFLITE_LOG(TFLITE_LOG_ERROR,
|
|
"Unsupported NnApiSLDriverImpl->implFeatureLevel: %" PRId64,
|
|
impl->implFeatureLevel);
|
|
return nullptr;
|
|
}
|
|
|
|
if (impl->implFeatureLevel == ANEURALNETWORKS_FEATURE_LEVEL_5) {
|
|
return std::make_unique<NnApiSupportLibrary>(
|
|
reinterpret_cast<NnApiSLDriverImplFL5*>(impl), libHandle);
|
|
}
|
|
if (impl->implFeatureLevel == ANEURALNETWORKS_FEATURE_LEVEL_6) {
|
|
return std::make_unique<NnApiSupportLibrary>(
|
|
reinterpret_cast<NnApiSLDriverImplFL6*>(impl), libHandle);
|
|
}
|
|
if (impl->implFeatureLevel == ANEURALNETWORKS_FEATURE_LEVEL_7) {
|
|
return std::make_unique<NnApiSupportLibrary>(
|
|
reinterpret_cast<NnApiSLDriverImplFL7*>(impl), libHandle);
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
} // namespace nnapi
|
|
} // namespace tflite
|