Add prototypes for jt

code/AssetLib/JT/JTImporter.cpp

@@ -1 +1,83 @@
 //
+
+#include "JT/JTImporter.h"
+#include <assimp/StreamReader.h>
+
+#include <cstddef>
+
+namespace Assimp::JT {
+
+enum class SegmentType {
+	Invalid = -1, //< Predefined class: Invalid
+	LOGICAL_SCENE_GRAPH,//< Predefined class: Logical_Scene_Graph
+	JT_BREP,//< Predefined class: JT_BRep
+	PMI_DATA, //<Predefined class: PMI_Data
+	META_DATA, //< Predefined class: Meta_Data
+	SHAPE, //< Predefined class: Shape
+	SHAPE_LOD0, //< Predefined class: Shape_LOD0
+	SHAPE_LOD1, //< Predefined class: Logical_Scene_Graph
+	SHAPE_LOD2, //< Predefined class: Shape_LOD2
+	SHAPE_LOD3, //< Predefined class: Shape_LOD3
+	SHAPE_LOD4, //< Predefined class: Shape_LOD4
+	SHAPE_LOD5, //< Predefined class: Shape_LOD5
+	SHAPE_LOD6, //< Predefined class: Shape_LOD6
+	SHAPE_LOD7, //< Predefined class: Shape_LOD7
+	SHAPE_LOD8, //< Predefined class: Shape_LOD8
+	SHAPE_LOD9, ///< Predefined class: Shape_LOD9
+	XT_BREP, //< Predefined class: XT_BRep
+    Count //< Number of segment types
+};
+
+struct Guid {
+    uint32_t Data0{};
+    uint32_t Data1{};
+    uint32_t Data2{}
+    uint32_t Data3{};
+};
+
+struct Version {
+    constexpr static size_t VersionSize = 80;
+    uint8_t Version[VersionSize]{};
+    int32_t Empty{0};
+    uint64_t TOCOffset{0};
+
+}
+struct SegmentHeader {
+    Guid          SegmentGuid{};
+    SegmentType   Type{SegmentType::Invalid};
+};
+
+namespace {
+    void readVersion(StreamReaderLE& reader, Version& version) {
+        reader.ReadBytes(version.Version, Version::VersionSize);
+        version.Empty = reader.Read<int32_t>();
+        version.TOCOffset = reader.Read<uint64_t>();
+    }
+} // Anonymous namespace
+
+JTImporter::JTImporter() : BaseImporter() {
+}
+
+JTImporter::~JTImporter() {
+
+}
+
+bool JTImporter::CanRead(const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const {
+
+}
+    
+void JTImporter::setupProperties(const Importer* pImp) {
+
+}
+
+void InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) {
+    auto stream = std::shared_ptr<IOStream>(pIOHandler->Open(pFile, "rb"));
+    if (!stream) {
+        throw DeadlyImportError("Failed to open JT file " + pFile + " for reading.");
+    }   
+    StreamReaderLE reader(stream);
+    Version version;
+    readVersion(reader, version);
+}
+
+} // Namespace Assimp

code/AssetLib/JT/JTImporter.h

@@ -1,4 +1,17 @@
 #pragma once
 
+#include <assimp/BaseImporter.h>
+
 namespace Assimp::JT {
+
+    
+class JTImporter : public BaseImporter {
+public:
+    JTImporter();
+    ~JTImporter() override;
+    bool CanRead(const std::string& pFile, IOSystem* pIOHandler, bool checkSig) const override;
+    void setupProperties(const Importer* pImp) override;
+
+protected:
+    void InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler) override;
 }