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// Copyright (C) 2018 Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
//
#include <map>
#include <vector>
#include <string>
#include <memory>
#include <tuple>
#include <ie_layers.h>
#include <graph_tools.hpp>
#include <debug.h>
#include "shape_infer/built-in/ie_built_in_holder.hpp"
#include "shape_infer/ie_reshaper.hpp"
#include "details/caseless.hpp"
#include "details/ie_cnn_network_tools.h"
using namespace InferenceEngine;
using namespace InferenceEngine::details;
using namespace ShapeInfer;
Reshaper::Reshaper(ICNNNetwork& network, const LauncherCreator::Ptr& launcherCreator) {
auto builtIn = std::make_shared<BuiltInShapeInferHolder>();
_allTypes = getTypeNamesFromExtension(builtIn);
_extensions.push_back(builtIn);
auto inputLayers = CNNNetGetAllInputLayers(network);
for (const auto& layer : inputLayers) {
_inputLayers.insert(layer);
}
_allSortedLayers = CNNNetSortTopologically(network);
if (_inputLayers.empty() || _allSortedLayers.empty())
THROW_IE_EXCEPTION << "Unsupported model for shape inference: failed to collect inputs and layers";
for (auto const& currentLayer : _allSortedLayers) {
auto foundInput = std::find_if(_inputLayers.begin(), _inputLayers.end(),
[¤tLayer](const CNNLayerPtr& inputLayer) {
return currentLayer->name == inputLayer->name;
});
ReshapeLauncher::Ptr createdLauncher;
if (foundInput == _inputLayers.end()) {
createdLauncher = launcherCreator->createNotInputLauncher(currentLayer.get(), _extensions);
} else {
createdLauncher = launcherCreator->createInputLauncher(currentLayer.get(), _extensions);
}
_launchers.insert(createdLauncher);
}
}
void Reshaper::AddExtension(const IShapeInferExtensionPtr& extension) {
if (!extension) THROW_IE_EXCEPTION << "Failed to add empty shape infer extension";
auto newLayerTypes = getTypeNamesFromExtension(extension);
std::string badLayerTypes;
for (const auto& type : newLayerTypes) {
auto ret = _allTypes.insert(type);
if (!ret.second) {
if (!badLayerTypes.empty())
badLayerTypes += ", ";
badLayerTypes += type;
}
}
if (!badLayerTypes.empty())
THROW_IE_EXCEPTION << "Failed to add extension with already registered types:" << badLayerTypes;
for (auto const& layerType : newLayerTypes) {
auto foundLauncher = _launchers.begin();
// find all layers with given type
std::vector<ReshapeLauncher::Ptr> launchersToInsert;
while (foundLauncher != _launchers.end()) {
foundLauncher = std::find_if(foundLauncher, _launchers.end(),
[&layerType](const ReshapeLauncher::Ptr& launcher) {
return layerType == launcher->getLayerType();
});
if (foundLauncher != _launchers.end()) {
IShapeInferImpl::Ptr impl;
StatusCode sts = extension->getShapeInferImpl(impl, layerType.c_str(), nullptr);
if (sts == OK && impl != nullptr) {
auto newLauncher = std::make_shared<ReshapeLauncher>((*foundLauncher)->getLayer(), impl);
newLauncher->setShapeInferImpl(impl);
launchersToInsert.push_back(newLauncher);
foundLauncher = _launchers.erase(foundLauncher);
} else {
THROW_IE_EXCEPTION << "Failed to get registered Shape Infer Implementation for type: " << layerType;
}
}
}
for (const auto& launcher : launchersToInsert) {
_launchers.insert(launcher);
}
}
_extensions.push_back(extension);
}
ReshapeLauncher::Ptr Reshaper::getLauncherByLayerName(const std::string& layerName) const {
auto foundLauncher = std::find_if(_launchers.begin(), _launchers.end(),
[&layerName](const ReshapeLauncher::Ptr& launcher) {
return launcher->getLayerName() == layerName;
});
if (foundLauncher == _launchers.end())
THROW_IE_EXCEPTION << "Failed to reshape layer ('" << layerName << "'): can't find the corresponding launcher";
return *foundLauncher;
}
void Reshaper::run(const std::map<std::string, SizeVector>& inputShapes) {
// Reset all shapes from previous run
for (const auto& launcher : _launchers) {
launcher->reset();
}
// Set new input shapes
for (auto const& input : _inputLayers) {
std::string layerName = input->name;
for (auto const& outData : input->outData) {
std::string dataName = outData->name;
auto foundShapeIt = inputShapes.find(dataName);
auto foundLauncher = getLauncherByLayerName(layerName);
if (foundShapeIt != inputShapes.end()) {
foundLauncher->setShapeByName(foundShapeIt->second, dataName);
} else {
foundLauncher->setIRShapeByName(dataName);
}
}
}
// do reshape
for (auto& layer : _allSortedLayers) {
auto foundLauncher = getLauncherByLayerName(layer->name);
foundLauncher->reshape(_launchers);
}
// apply changes
for (auto& layer : _allSortedLayers) {
auto foundLauncher = getLauncherByLayerName(layer->name);
foundLauncher->applyChanges(layer.get());
}
}
caseless_set<std::string> Reshaper::getTypeNamesFromExtension(const IShapeInferExtensionPtr& extension) {
char** types = nullptr;
unsigned int size = 0;
ResponseDesc resp;
StatusCode sts = extension->getShapeInferTypes(types, size, &resp);
if (sts != OK) THROW_IE_EXCEPTION << "Failed to get types from extension: " << resp.msg;
caseless_set<std::string> typesSet;
for (int i = 0; i < size; i++) {
std::string type(types[i], strlen(types[i]));
delete[] types[i];
typesSet.insert(type);
}
delete[] types;
return typesSet;
}
ReshapeLauncher::Ptr
LauncherCreator::createNotInputLauncher(const CNNLayer* layer, const std::vector<IShapeInferExtensionPtr>& extensions) {
auto layerType = layer->type;
if ((::details::equal(layerType, "memory") && layer->GetParamAsInt("index")) ||
::details::equal(layerType, "const") || ::details::equal(layerType, "input")) {
THROW_IE_EXCEPTION << "Failed to reshape: Layer with type `" << layerType
<< "` can't be intermediate layer in network";
}
for (const auto& extension : extensions) {
IShapeInferImpl::Ptr impl = nullptr;
StatusCode sts = extension->getShapeInferImpl(impl, layerType.c_str(), nullptr);
if (sts == OK && impl != nullptr) {
if (::details::equal(layerType, "memory") && !layer->GetParamAsInt("index")) {
return std::make_shared<OutMemoryReshapeLauncher>(layer, nullptr);
}
return std::make_shared<ReshapeLauncher>(layer, impl);
}
}
return std::make_shared<FakeReshapeLauncher>(layer, nullptr);
}
ReshapeLauncher::Ptr
LauncherCreator::createInputLauncher(const CNNLayer* layer, const std::vector<IShapeInferExtensionPtr>& extensions) {
auto layerType = layer->type;
if (::details::equal(layerType, "memory") && layer->GetParamAsInt("index")) {
return std::make_shared<InputReshapeLauncher>(layer, nullptr);
} else if (::details::equal(layerType, "const")) {
return std::make_shared<ConstReshapeLauncher>(layer, nullptr);
} else if (::details::equal(layerType, "input")) {
return std::make_shared<InputReshapeLauncher>(layer, nullptr);
}
THROW_IE_EXCEPTION << "Failed to reshape: Layer with type `" << layerType
<< "` can't be input. Supported input types: Input, Const and Memory(with index=1)";
}
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