Update APIs with model_path for ONNXRT (#621)

Signed-off-by: Kevin Chen <kevinch@nvidia.com>

Author: kevinch-nv

ModelImporter.cpp

@@ -293,7 +293,8 @@ Status deserialize_onnx_model(int fd, bool is_serialized_as_text, ::ONNX_NAMESPA
 }
 
 bool ModelImporter::supportsModel(
-    void const* serialized_onnx_model, size_t serialized_onnx_model_size, SubGraphCollection_t& sub_graph_collection)
+    void const* serialized_onnx_model, size_t serialized_onnx_model_size, SubGraphCollection_t& sub_graph_collection,
+    const char* model_path)
 {
 
     ::ONNX_NAMESPACE::ModelProto model;
@@ -307,6 +308,11 @@ bool ModelImporter::supportsModel(
         return false;
     }
 
+    if (model_path)
+    {
+        _importer_ctx.setOnnxFileLocation(model_path);
+    }
+
     bool allSupported{true};
 
     // Parse the graph and see if we hit any parsing errors
@@ -454,8 +460,12 @@ bool ModelImporter::parseWithWeightDescriptors(void const* serialized_onnx_model
     return true;
 }
 
-bool ModelImporter::parse(void const* serialized_onnx_model, size_t serialized_onnx_model_size)
+bool ModelImporter::parse(void const* serialized_onnx_model, size_t serialized_onnx_model_size, const char* model_path)
 {
+    if (model_path)
+    {
+        _importer_ctx.setOnnxFileLocation(model_path);
+    }
     return this->parseWithWeightDescriptors(serialized_onnx_model, serialized_onnx_model_size, 0, nullptr);
 }
 

ModelImporter.hpp

@@ -56,9 +56,9 @@ class ModelImporter : public nvonnxparser::IParser
     }
     bool parseWithWeightDescriptors(void const* serialized_onnx_model, size_t serialized_onnx_model_size,
         uint32_t weight_count, onnxTensorDescriptorV1 const* weight_descriptors) override;
-    bool parse(void const* serialized_onnx_model, size_t serialized_onnx_model_size) override;
+    bool parse(void const* serialized_onnx_model, size_t serialized_onnx_model_size, const char* model_path = nullptr) override;
     bool supportsModel(void const* serialized_onnx_model, size_t serialized_onnx_model_size,
-        SubGraphCollection_t& sub_graph_collection) override;
+        SubGraphCollection_t& sub_graph_collection, const char* model_path = nullptr) override;
 
     bool supportsOperator(const char* op_name) const override;
     void destroy() override

NvOnnxParser.h

@@ -132,13 +132,14 @@ class IParser
      *         To obtain a better diagnostic, use the parseFromFile method below.
      *
      * \param serialized_onnx_model Pointer to the serialized ONNX model
-     * \param serialized_onnx_model_size Size of the serialized ONNX model
-     *        in bytes
+     * \param serialized_onnx_model_size Size of the serialized ONNX model in bytes
+     * \param model_path Absolute path to the model file for loading external weights if required
      * \return true if the model was parsed successfully
      * \see getNbErrors() getError()
      */
     virtual bool parse(void const* serialized_onnx_model,
-                       size_t serialized_onnx_model_size)
+                       size_t serialized_onnx_model_size,
+                       const char* model_path = nullptr)
         = 0;
 
     /** \brief Parse an onnx model file, can be a binary protobuf or a text onnx model
@@ -158,11 +159,13 @@ class IParser
      * \param serialized_onnx_model_size Size of the serialized ONNX model
      *        in bytes
      * \param sub_graph_collection Container to hold supported subgraphs
+     * \param model_path Absolute path to the model file for loading external weights if required
      * \return true if the model is supported
      */
     virtual bool supportsModel(void const* serialized_onnx_model,
                                size_t serialized_onnx_model_size,
-                               SubGraphCollection_t& sub_graph_collection)
+                               SubGraphCollection_t& sub_graph_collection,
+                               const char* model_path = nullptr)
         = 0;
 
     /** \brief Parse a serialized ONNX model into the TensorRT network

OnnxAttrs.hpp

@@ -61,7 +61,7 @@ class OnnxAttrs
         return _attrs.at(key);
     }
 
-    const ::ONNX_NAMESPACE::AttributeProto::AttributeType type(const std::string& key) const
+    ::ONNX_NAMESPACE::AttributeProto::AttributeType type(const std::string& key) const
     {
         return this->at(key)->type();
     }

onnx2trt_utils.cpp

@@ -1346,10 +1346,10 @@ bool parseExternalWeights(IImporterContext* ctx, std::string file, std::string p
     relPathFile.seekg(offset, std::ios::beg);
     int weightsBufSize = length == 0 ? fileSize : length;
     weightsBuf.resize(weightsBufSize);
-    LOG_VERBOSE("Reading weights from external file: " << file);
+    LOG_VERBOSE("Reading weights from external file: " << path);
     if (!relPathFile.read(weightsBuf.data(), weightsBuf.size()))
     {
-        LOG_ERROR("Failed to read weights from external file: " << file);
+        LOG_ERROR("Failed to read weights from external file: " << path);
         return false;
     }
     size = weightsBuf.size();