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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.
*/
#include "Device.h"
#include "Callbacks.h"
#include "Conversions.h"
#include "HandleError.h"
#include "ProtectCallback.h"
#include "Utils.h"
#include <android/hardware/neuralnetworks/1.0/IDevice.h>
#include <android/hardware/neuralnetworks/1.0/types.h>
#include <nnapi/IBuffer.h>
#include <nnapi/IDevice.h>
#include <nnapi/IPreparedModel.h>
#include <nnapi/OperandTypes.h>
#include <nnapi/Result.h>
#include <nnapi/Types.h>
#include <nnapi/hal/CommonUtils.h>
#include <nnapi/hal/TransferValue.h>
#include <functional>
#include <memory>
#include <optional>
#include <string>
#include <vector>
// See hardware/interfaces/neuralnetworks/utils/README.md for more information on HIDL interface
// lifetimes across processes and for protecting asynchronous calls across HIDL.
namespace android::hardware::neuralnetworks::V1_0::utils {
namespace {
nn::GeneralResult<nn::Capabilities> capabilitiesCallback(ErrorStatus status,
const Capabilities& capabilities) {
HANDLE_STATUS_HIDL(status) << "getting capabilities failed with " << toString(status);
return nn::convert(capabilities);
}
nn::GeneralResult<nn::Capabilities> getCapabilitiesFrom(V1_0::IDevice* device) {
CHECK(device != nullptr);
auto cb = hal::utils::CallbackValue(capabilitiesCallback);
const auto ret = device->getCapabilities(cb);
HANDLE_TRANSPORT_FAILURE(ret);
return cb.take();
}
} // namespace
nn::GeneralResult<std::shared_ptr<const Device>> Device::create(std::string name,
sp<V1_0::IDevice> device) {
if (name.empty()) {
return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT)
<< "V1_0::utils::Device::create must have non-empty name";
}
if (device == nullptr) {
return NN_ERROR(nn::ErrorStatus::INVALID_ARGUMENT)
<< "V1_0::utils::Device::create must have non-null device";
}
auto capabilities = NN_TRY(getCapabilitiesFrom(device.get()));
auto deathHandler = NN_TRY(hal::utils::DeathHandler::create(device));
return std::make_shared<const Device>(PrivateConstructorTag{}, std::move(name),
std::move(capabilities), std::move(device),
std::move(deathHandler));
}
Device::Device(PrivateConstructorTag /*tag*/, std::string name, nn::Capabilities capabilities,
sp<V1_0::IDevice> device, hal::utils::DeathHandler deathHandler)
: kName(std::move(name)),
kCapabilities(std::move(capabilities)),
kDevice(std::move(device)),
kDeathHandler(std::move(deathHandler)) {}
const std::string& Device::getName() const {
return kName;
}
const std::string& Device::getVersionString() const {
return kVersionString;
}
nn::Version Device::getFeatureLevel() const {
return kVersion;
}
nn::DeviceType Device::getType() const {
return nn::DeviceType::OTHER;
}
const std::vector<nn::Extension>& Device::getSupportedExtensions() const {
return kExtensions;
}
const nn::Capabilities& Device::getCapabilities() const {
return kCapabilities;
}
std::pair<uint32_t, uint32_t> Device::getNumberOfCacheFilesNeeded() const {
return std::make_pair(/*numModelCache=*/0, /*numDataCache=*/0);
}
nn::GeneralResult<void> Device::wait() const {
const auto ret = kDevice->ping();
HANDLE_TRANSPORT_FAILURE(ret);
return {};
}
nn::GeneralResult<std::vector<bool>> Device::getSupportedOperations(const nn::Model& model) const {
// Ensure that model is ready for IPC.
std::optional<nn::Model> maybeModelInShared;
const nn::Model& modelInShared =
NN_TRY(hal::utils::flushDataFromPointerToShared(&model, &maybeModelInShared));
const auto hidlModel = NN_TRY(convert(modelInShared));
auto cb = hal::utils::CallbackValue(supportedOperationsCallback);
const auto ret = kDevice->getSupportedOperations(hidlModel, cb);
HANDLE_TRANSPORT_FAILURE(ret);
return cb.take();
}
nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModel(
const nn::Model& model, nn::ExecutionPreference /*preference*/, nn::Priority /*priority*/,
nn::OptionalTimePoint /*deadline*/, const std::vector<nn::SharedHandle>& /*modelCache*/,
const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/) const {
// Ensure that model is ready for IPC.
std::optional<nn::Model> maybeModelInShared;
const nn::Model& modelInShared =
NN_TRY(hal::utils::flushDataFromPointerToShared(&model, &maybeModelInShared));
const auto hidlModel = NN_TRY(convert(modelInShared));
const auto cb = sp<PreparedModelCallback>::make();
const auto scoped = kDeathHandler.protectCallback(cb.get());
const auto ret = kDevice->prepareModel(hidlModel, cb);
const auto status = HANDLE_TRANSPORT_FAILURE(ret);
HANDLE_STATUS_HIDL(status) << "model preparation failed with " << toString(status);
return cb->get();
}
nn::GeneralResult<nn::SharedPreparedModel> Device::prepareModelFromCache(
nn::OptionalTimePoint /*deadline*/, const std::vector<nn::SharedHandle>& /*modelCache*/,
const std::vector<nn::SharedHandle>& /*dataCache*/, const nn::CacheToken& /*token*/) const {
return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
<< "IDevice::prepareModelFromCache not supported on 1.0 HAL service";
}
nn::GeneralResult<nn::SharedBuffer> Device::allocate(
const nn::BufferDesc& /*desc*/,
const std::vector<nn::SharedPreparedModel>& /*preparedModels*/,
const std::vector<nn::BufferRole>& /*inputRoles*/,
const std::vector<nn::BufferRole>& /*outputRoles*/) const {
return NN_ERROR(nn::ErrorStatus::GENERAL_FAILURE)
<< "IDevice::allocate not supported on 1.0 HAL service";
}
} // namespace android::hardware::neuralnetworks::V1_0::utils
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