Rework model loading in FE manager, implement PDPD probing

cmake/templates/InferenceEngineConfig.cmake.in

@@ -73,6 +73,10 @@ function(_ie_target_no_deprecation_error)
         else()
             set(flags "-Wno-error=deprecated-declarations")
         endif()
+        if(CMAKE_CROSSCOMPILING)
+            set_target_properties(${ARGV} PROPERTIES
+                                  INTERFACE_LINK_OPTIONS "-Wl,--allow-shlib-undefined")
+        endif()
 
         set_target_properties(${ARGV} PROPERTIES INTERFACE_COMPILE_OPTIONS ${flags})
     endif()

inference-engine/src/inference_engine/CMakeLists.txt

@@ -124,6 +124,7 @@ target_compile_definitions(${TARGET_NAME}_obj PRIVATE IMPLEMENT_INFERENCE_ENGINE
 
 target_include_directories(${TARGET_NAME}_obj SYSTEM PRIVATE $<TARGET_PROPERTY:ngraph::ngraph,INTERFACE_INCLUDE_DIRECTORIES>
                                                              $<TARGET_PROPERTY:pugixml::static,INTERFACE_INCLUDE_DIRECTORIES>
+                                                             $<TARGET_PROPERTY:ngraph::frontend_manager,INTERFACE_INCLUDE_DIRECTORIES>
                                                              $<TARGET_PROPERTY:xbyak,INTERFACE_INCLUDE_DIRECTORIES>)
 
 target_include_directories(${TARGET_NAME}_obj PRIVATE "${CMAKE_CURRENT_SOURCE_DIR}"
@@ -160,7 +161,7 @@ if (TBBBIND_2_4_FOUND)
 endif()
 
 target_link_libraries(${TARGET_NAME} PRIVATE pugixml::static openvino::itt ${CMAKE_DL_LIBS} Threads::Threads
-                                             ngraph inference_engine_transformations)
+                                             ngraph ngraph::frontend_manager inference_engine_transformations)
 
 target_include_directories(${TARGET_NAME} INTERFACE
             $<BUILD_INTERFACE:${PUBLIC_HEADERS_DIR}>
@@ -200,7 +201,7 @@ if(WIN32)
     set_target_properties(${TARGET_NAME}_s PROPERTIES COMPILE_PDB_NAME ${TARGET_NAME}_s)
 endif()
 
-target_link_libraries(${TARGET_NAME}_s PRIVATE openvino::itt ${CMAKE_DL_LIBS} ngraph
+target_link_libraries(${TARGET_NAME}_s PRIVATE openvino::itt ${CMAKE_DL_LIBS} ngraph ngraph::frontend_manager
                                                inference_engine_transformations pugixml::static)
 
 target_compile_definitions(${TARGET_NAME}_s PUBLIC USE_STATIC_IE)

inference-engine/src/inference_engine/ie_network_reader.cpp

@@ -9,6 +9,7 @@
 #include <file_utils.h>
 #include <ie_reader.hpp>
 #include <ie_ir_version.hpp>
+#include <frontend_manager/frontend_manager.hpp>
 
 #include <fstream>
 #include <istream>
@@ -226,6 +227,26 @@ CNNNetwork details::ReadNetwork(const std::string& modelPath, const std::string&
             return reader->read(modelStream, exts);
         }
     }
+    // Try to load with FrontEndManager
+    static ngraph::frontend::FrontEndManager manager;
+    ngraph::frontend::FrontEnd::Ptr FE;
+    ngraph::frontend::InputModel::Ptr inputModel;
+    if (!binPath.empty()) {
+#if defined(ENABLE_UNICODE_PATH_SUPPORT) && defined(_WIN32)
+        std::wstring weights_path = FileUtils::multiByteCharToWString(binPath.c_str());
+#else
+        std::string weights_path = binPath;
+#endif
+        FE = manager.load_by_model(model_path, weights_path);
+        if (FE) inputModel = FE->load(model_path, weights_path);
+    } else {
+        FE = manager.load_by_model(model_path);
+        if (FE) inputModel = FE->load(model_path);
+    }
+    if (inputModel) {
+        auto ngFunc = FE->convert(inputModel);
+        return CNNNetwork(ngFunc);
+    }
     IE_THROW() << "Unknown model format! Cannot find reader for model format: " << fileExt << " and read the model: " << modelPath <<
                ". Please check that reader library exists in your PATH.";
 }
@@ -248,4 +269,4 @@ CNNNetwork details::ReadNetwork(const std::string& model, const Blob::CPtr& weig
     IE_THROW() << "Unknown model format! Cannot find reader for the model and read it. Please check that reader library exists in your PATH.";
 }
 
-}  // namespace InferenceEngine
+}  // namespace InferenceEngine

inference-engine/tests/functional/inference_engine/CMakeLists.txt

@@ -55,6 +55,11 @@ if(NGRAPH_ONNX_IMPORT_ENABLE)
     add_dependencies(${TARGET_NAME} inference_engine_onnx_reader)
 endif()
 
+if(NGRAPH_PDPD_FRONTEND_ENABLE)
+    target_compile_definitions(${TARGET_NAME} PRIVATE
+        PDPD_TEST_MODELS="${CMAKE_CURRENT_SOURCE_DIR}/pdpd_reader/models/")
+endif()
+
 ie_faster_build(${TARGET_NAME}
     PCH PRIVATE "precomp.hpp"
 )

inference-engine/tests/functional/inference_engine/pdpd_reader/read_pdpd_model_test.cpp

@@ -0,0 +1,66 @@
+// Copyright (C) 2018-2021 Intel Corporation
+// SPDX-License-Identifier: Apache-2.0
+//
+
+#include <gtest/gtest.h>
+#include <set>
+#include <string>
+#include <fstream>
+
+#include <ie_blob.h>
+#include <ie_core.hpp>
+#include <file_utils.h>
+#include <ngraph/ngraph.hpp>
+#include <ngraph/opsets/opset8.hpp>
+#include <ngraph_functions/utils/ngraph_helpers.hpp>
+
+TEST(PDPD_Reader_Tests, ImportBasicModelToCore) {
+    auto model = std::string(PDPD_TEST_MODELS) + "relu.pdmodel";
+    InferenceEngine::Core ie;
+    auto cnnNetwork = ie.ReadNetwork(model);
+    auto function = cnnNetwork.getFunction();
+
+    const auto inputType = ngraph::element::f32;
+    const auto inputShape = ngraph::Shape{ 3 };
+
+    const auto data = std::make_shared<ngraph::opset8::Parameter>(inputType, inputShape);
+    const auto relu = std::make_shared<ngraph::opset8::Relu>(data);
+    const auto scale = std::make_shared<ngraph::opset8::Constant>(ngraph::element::f32, ngraph::Shape{ 1 }, std::vector<float>{1});
+    const auto bias = std::make_shared<ngraph::opset8::Constant>(ngraph::element::f32, ngraph::Shape{ 1 }, std::vector<float>{0});
+    const auto node_multiply = std::make_shared<ngraph::opset8::Multiply>(relu, scale);
+    const auto node_add = std::make_shared<ngraph::opset8::Add>(node_multiply, bias);
+    const auto result = std::make_shared<ngraph::opset8::Result>(node_add);
+    const auto reference = std::make_shared<const ngraph::Function>(
+        ngraph::NodeVector{ result },
+        ngraph::ParameterVector{ data },
+        "RefPDPDFunction");
+    ngraph::helpers::CompareFunctions(*reference, *function);
+}
+
+#if defined(ENABLE_UNICODE_PATH_SUPPORT) && defined(_WIN32)
+TEST(PDPD_Reader_Tests, ImportBasicModelToCoreWstring) {
+    std::string win_dir_path{ PDPD_TEST_MODELS };
+    std::replace(win_dir_path.begin(), win_dir_path.end(), '/', '\\');
+    const std::wstring unicode_win_dir_path = FileUtils::multiByteCharToWString(win_dir_path.c_str());
+    auto model = unicode_win_dir_path + L"ひらがな日本語.pdmodel";
+    InferenceEngine::Core ie;
+    auto cnnNetwork = ie.ReadNetwork(model);
+    auto function = cnnNetwork.getFunction();
+
+    const auto inputType = ngraph::element::f32;
+    const auto inputShape = ngraph::Shape{ 3 };
+
+    const auto data = std::make_shared<ngraph::opset8::Parameter>(inputType, inputShape);
+    const auto relu = std::make_shared<ngraph::opset8::Relu>(data);
+    const auto scale = std::make_shared<ngraph::opset8::Constant>(ngraph::element::f32, ngraph::Shape{ 1 }, std::vector<float>{1});
+    const auto bias = std::make_shared<ngraph::opset8::Constant>(ngraph::element::f32, ngraph::Shape{ 1 }, std::vector<float>{0});
+    const auto node_multiply = std::make_shared<ngraph::opset8::Multiply>(relu, scale);
+    const auto node_add = std::make_shared<ngraph::opset8::Add>(node_multiply, bias);
+    const auto result = std::make_shared<ngraph::opset8::Result>(node_add);
+    const auto reference = std::make_shared<const ngraph::Function>(
+        ngraph::NodeVector{ result },
+        ngraph::ParameterVector{ data },
+        "RefPDPDFunction");
+    ngraph::helpers::CompareFunctions(*reference, *function);
+}
+#endif

model-optimizer/mo/moc_frontend/pipeline.py

@@ -24,7 +24,7 @@ def moc_pipeline(argv: argparse.Namespace):
         str(fem.get_available_front_ends())))
     log.debug('Initializing new FE for framework {}'.format(argv.framework))
     fe = fem.load_by_framework(argv.framework)
-    input_model = fe.load_from_file(argv.input_model)
+    input_model = fe.load(argv.input_model)
 
     user_shapes, outputs, freeze_placeholder = fe_user_data_repack(
         input_model, argv.placeholder_shapes, argv.placeholder_data_types,

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_ngraph_frontend/mock_mo_frontend.cpp

@@ -25,7 +25,7 @@ extern "C" MOCK_API void* GetFrontEndData()
 {
     FrontEndPluginInfo* res = new FrontEndPluginInfo();
     res->m_name = "mock_mo_ngraph_frontend";
-    res->m_creator = [](FrontEndCapFlags flags) { return std::make_shared<FrontEndMockPy>(flags); };
+    res->m_creator = []() { return std::make_shared<FrontEndMockPy>(); };
 
     return res;
 }

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_ngraph_frontend/mock_mo_frontend.hpp

@@ -292,11 +292,9 @@ class MOCK_API InputModelMockPy : public InputModel
 /// was called with correct arguments during test execution
 struct MOCK_API FeStat
 {
-    FrontEndCapFlags m_load_flags;
     std::vector<std::string> m_load_paths;
     int m_convert_model = 0;
     // Getters
-    FrontEndCapFlags load_flags() const { return m_load_flags; }
     std::vector<std::string> load_paths() const { return m_load_paths; }
     int convert_model() const { return m_convert_model; }
 };
@@ -309,13 +307,8 @@ class MOCK_API FrontEndMockPy : public FrontEnd
     static FeStat m_stat;
 
 public:
-    FrontEndMockPy(FrontEndCapFlags flags) { m_stat.m_load_flags = flags; }
+    FrontEndMockPy() {}
 
-    InputModel::Ptr load_from_file(const std::string& path) const override
-    {
-        m_stat.m_load_paths.push_back(path);
-        return std::make_shared<InputModelMockPy>();
-    }
 
     std::shared_ptr<ngraph::Function> convert(InputModel::Ptr model) const override
     {
@@ -326,4 +319,15 @@ class MOCK_API FrontEndMockPy : public FrontEnd
     static FeStat get_stat() { return m_stat; }
 
     static void clear_stat() { m_stat = {}; }
+
+protected:
+    InputModel::Ptr load_impl(const std::vector<std::shared_ptr<Variant>>& params) const override
+    {
+        if (params.size() > 0 && is_type<VariantWrapper<std::string>>(params[0]))
+        {
+            auto path = as_type_ptr<VariantWrapper<std::string>>(params[0])->get();
+            m_stat.m_load_paths.push_back(path);
+        }
+        return std::make_shared<InputModelMockPy>();
+    }
 };

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_python_api/mock_mo_python_api.cpp

@@ -17,7 +17,6 @@ static void register_mock_frontend_stat(py::module m)
     m.def("clear_frontend_statistic", &FrontEndMockPy::clear_stat);
 
     py::class_<FeStat> feStat(m, "FeStat", py::dynamic_attr());
-    feStat.def_property_readonly("load_flags", &FeStat::load_flags);
     feStat.def_property_readonly("load_paths", &FeStat::load_paths);
     feStat.def_property_readonly("convert_model", &FeStat::convert_model);
 }

ngraph/core/include/ngraph/variant.hpp

@@ -75,4 +75,18 @@ namespace ngraph
         {
         }
     };
+
+    template <typename T>
+    inline std::shared_ptr<Variant> make_variant(const T& p)
+    {
+        return std::dynamic_pointer_cast<VariantImpl<T>>(std::make_shared<VariantWrapper<T>>(p));
+    }
+
+    template <size_t N>
+    inline std::shared_ptr<Variant> make_variant(const char (&s)[N])
+    {
+        return std::dynamic_pointer_cast<VariantImpl<std::string>>(
+            std::make_shared<VariantWrapper<std::string>>(s));
+    }
+
 } // namespace ngraph

ngraph/frontend/frontend_manager/include/frontend_manager/frontend.hpp

@@ -10,6 +10,7 @@
 #include "frontend_manager_defs.hpp"
 #include "input_model.hpp"
 #include "ngraph/function.hpp"
+#include "ngraph/variant.hpp"
 
 namespace ngraph
 {
@@ -26,43 +27,34 @@ namespace ngraph
 
             virtual ~FrontEnd();
 
-            /// \brief Loads an input model by specified model file path
-            /// If model is stored in several files (e.g. model topology and model weights) -
-            /// frontend implementation is responsible to handle this case, generally frontend may
-            /// retrieve other file names from main file
-            /// \param path Main model file path
-            /// \return Loaded input model
-            virtual InputModel::Ptr load_from_file(const std::string& path) const;
-
-            /// \brief Loads an input model by specified number of model files
-            /// This shall be used for cases when client knows all model files (model, weights, etc)
-            /// \param paths Array of model files
-            /// \return Loaded input model
-            virtual InputModel::Ptr load_from_files(const std::vector<std::string>& paths) const;
-
-            /// \brief Loads an input model by already loaded memory buffer
-            /// Memory structure is frontend-defined and is not specified in generic API
-            /// \param model Model memory buffer
-            /// \return Loaded input model
-            virtual InputModel::Ptr load_from_memory(const void* model) const;
-
-            /// \brief Loads an input model from set of memory buffers
-            /// Memory structure is frontend-defined and is not specified in generic API
-            /// \param modelParts Array of model memory buffers
-            /// \return Loaded input model
-            virtual InputModel::Ptr
-                load_from_memory_fragments(const std::vector<const void*>& modelParts) const;
-
-            /// \brief Loads an input model by input stream representing main model file
-            /// \param stream Input stream of main model
-            /// \return Loaded input model
-            virtual InputModel::Ptr load_from_stream(std::istream& stream) const;
-
-            /// \brief Loads an input model by input streams representing all model files
-            /// \param streams Array of input streams for model
-            /// \return Loaded input model
-            virtual InputModel::Ptr
-                load_from_streams(const std::vector<std::istream*>& streams) const;
+            /// \brief Validates if FrontEnd can recognize model with parameters specified.
+            /// Same parameters should be used to load model.
+            /// \param vars Any number of parameters of any type. What kind of parameters
+            /// are accepted is determined by each FrontEnd individually, typically it is
+            /// std::string containing path to the model file. For more information please
+            /// refer to specific FrontEnd documentation.
+            /// \return true if model recognized, false - otherwise.
+            template <typename... Types>
+            bool supported(const Types&... vars) const
+            {
+                return supported_by_variants({make_variant(vars)...});
+            }
+
+            virtual bool
+                supported_by_variants(const std::vector<std::shared_ptr<Variant>>& variants) const;
+
+            /// \brief Loads an input model by any specified arguments. Each FrontEnd separately
+            /// defines what arguments it can accept.
+            /// \param vars Any number of parameters of any type. What kind of parameters
+            /// are accepted is determined by each FrontEnd individually, typically it is
+            /// std::string containing path to the model file. For more information please
+            /// refer to specific FrontEnd documentation.
+            /// \return Loaded input model.
+            template <typename... Types>
+            InputModel::Ptr load(const Types&... vars) const
+            {
+                return load_impl({make_variant(vars)...});
+            }
 
             /// \brief Completely convert and normalize entire function, throws if it is not
             /// possible
@@ -95,6 +87,10 @@ namespace ngraph
             /// \brief Runs normalization passes on function that was loaded with partial conversion
             /// \param function partially converted nGraph function
             virtual void normalize(std::shared_ptr<ngraph::Function> function) const;
+
+        protected:
+            virtual InputModel::Ptr
+                load_impl(const std::vector<std::shared_ptr<Variant>>& variants) const;
         };
 
     } // namespace frontend