Initial version

code/Common/Importer.cpp

@@ -78,6 +78,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/TinyFormatter.h>
 #include <assimp/Exceptional.h>
 #include <assimp/Profiler.h>
+#include <assimp/commonMetaData.h>
 #include <set>
 #include <memory>
 #include <cctype>
@@ -654,6 +655,10 @@ const aiScene* Importer::ReadFile( const char* _pFile, unsigned int pFlags)
 
         // If successful, apply all active post processing steps to the imported data
         if( pimpl->mScene)  {
+            if (!pimpl->mScene->mMetaData->HasKey(AI_METADATA_SOURCE_FORMAT))
+            {
+                pimpl->mScene->mMetaData->Add(AI_METADATA_SOURCE_FORMAT, aiString(ext));
+            }
 
 #ifndef ASSIMP_BUILD_NO_VALIDATEDS_PROCESS
             // The ValidateDS process is an exception. It is executed first, even before ScenePreprocessor is called.

code/FBX/FBXConverter.cpp

@@ -60,6 +60,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/scene.h>
 
 #include <assimp/CreateAnimMesh.h>
+#include <assimp/commonMetaData.h>
 
 #include <tuple>
 #include <memory>
@@ -3604,7 +3605,7 @@ void FBXConverter::SetShadingPropertiesRaw(aiMaterial* out_mat, const PropertyTa
                 return;
             }
 
-            out->mMetaData = aiMetadata::Alloc(15);
+            out->mMetaData = aiMetadata::Alloc(17);
             out->mMetaData->Set(0, "UpAxis", doc.GlobalSettings().UpAxis());
             out->mMetaData->Set(1, "UpAxisSign", doc.GlobalSettings().UpAxisSign());
             out->mMetaData->Set(2, "FrontAxis", doc.GlobalSettings().FrontAxis());
@@ -3620,6 +3621,8 @@ void FBXConverter::SetShadingPropertiesRaw(aiMaterial* out_mat, const PropertyTa
             out->mMetaData->Set(12, "TimeSpanStart", doc.GlobalSettings().TimeSpanStart());
             out->mMetaData->Set(13, "TimeSpanStop", doc.GlobalSettings().TimeSpanStop());
             out->mMetaData->Set(14, "CustomFrameRate", doc.GlobalSettings().CustomFrameRate());
+            out->mMetaData->Set(15, AI_METADATA_SOURCE_FORMAT_VERSION, aiString(std::to_string(doc.FBXVersion())));
+            out->mMetaData->Set(16, AI_METADATA_SOURCE_GENERATOR, aiString(doc.Creator()));
         }
 
         void FBXConverter::TransferDataToScene()

code/FBX/FBXConverter.h

@@ -421,6 +421,8 @@ private:
         double& minTime,
         Model::RotOrder order);
 
+    // ------------------------------------------------------------------------------------------------
+    // Copy information about the source of the document into scene metadata.
     void ConvertGlobalSettings();
 
     // ------------------------------------------------------------------------------------------------

code/glTF/glTFImporter.cpp

@@ -54,6 +54,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/ai_assert.h>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/importerdesc.h>
+#include <assimp/commonMetaData.h>
 
 #include <memory>
 
@@ -697,6 +698,14 @@ void glTFImporter::ImportEmbeddedTextures(glTF::Asset& r)
     }
 }
 
+void glTFImporter::ImportCommonMetadata(glTF::Asset& a)
+{
+    ai_assert(mScene->mMetaData == nullptr);
+    mScene->mMetaData = aiMetadata::Alloc(2);
+    mScene->mMetaData->Set(0, AI_METADATA_SOURCE_FORMAT_VERSION, aiString(a.asset.version));
+    mScene->mMetaData->Set(1, AI_METADATA_SOURCE_GENERATOR, aiString(a.asset.generator));
+}
+
 void glTFImporter::InternReadFile(const std::string& pFile, aiScene* pScene, IOSystem* pIOHandler)
 {
     // clean all member arrays

code/glTF/glTFImporter.h

@@ -83,7 +83,7 @@ private:
     void ImportCameras(glTF::Asset& a);
     void ImportLights(glTF::Asset& a);
     void ImportNodes(glTF::Asset& a);
-
+    void ImportCommonMetadata(glTF::Asset& a);
 };
 
 } // Namespace assimp

code/glTF2/glTF2Importer.cpp

@@ -55,6 +55,7 @@ OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 #include <assimp/scene.h>
 #include <assimp/DefaultLogger.hpp>
 #include <assimp/Importer.hpp>
+#include <assimp/commonMetaData.h>
 
 #include <memory>
 #include <unordered_map>
@@ -1301,6 +1302,13 @@ void glTF2Importer::ImportEmbeddedTextures(glTF2::Asset &r) {
 	}
 }
 
+void glTF2Importer::ImportCommonMetadata(glTF2::Asset& a) {
+    ai_assert(mScene->mMetaData == nullptr);
+    mScene->mMetaData = aiMetadata::Alloc(2);
+    mScene->mMetaData->Set(0, AI_METADATA_SOURCE_FORMAT_VERSION, aiString(a.asset.version));
+    mScene->mMetaData->Set(1, AI_METADATA_SOURCE_GENERATOR, aiString(a.asset.generator));
+}
+
 void glTF2Importer::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
 	// clean all member arrays
 	meshOffsets.clear();
@@ -1328,6 +1336,8 @@ void glTF2Importer::InternReadFile(const std::string &pFile, aiScene *pScene, IO
 
 	ImportAnimations(asset);
 
+    ImportCommonMetadata(asset);
+
 	if (pScene->mNumMeshes == 0) {
 		pScene->mFlags |= AI_SCENE_FLAGS_INCOMPLETE;
 	}

code/glTF2/glTF2Importer.h

@@ -84,6 +84,7 @@ private:
     void ImportLights(glTF2::Asset& a);
     void ImportNodes(glTF2::Asset& a);
     void ImportAnimations(glTF2::Asset& a);
+    void ImportCommonMetadata(glTF2::Asset& a);
 };
 
 } // Namespace assimp

include/assimp/commonMetaData.h

@@ -0,0 +1,61 @@
+/*
+---------------------------------------------------------------------------
+Open Asset Import Library (assimp)
+---------------------------------------------------------------------------
+
+Copyright (c) 2006-2019, assimp team
+
+
+
+All rights reserved.
+
+Redistribution and use of this software in source and binary forms,
+with or without modification, are permitted provided that the following
+conditions are met:
+
+* Redistributions of source code must retain the above
+  copyright notice, this list of conditions and the
+  following disclaimer.
+
+* Redistributions in binary form must reproduce the above
+  copyright notice, this list of conditions and the
+  following disclaimer in the documentation and/or other
+  materials provided with the distribution.
+
+* Neither the name of the assimp team, nor the names of its
+  contributors may be used to endorse or promote products
+  derived from this software without specific prior
+  written permission of the assimp team.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+---------------------------------------------------------------------------
+*/
+
+/** @file commonMetaData.h
+ *  @brief Defines a set of common scene metadata keys.
+ */
+#pragma once
+#ifndef AI_COMMONMETADATA_H_INC
+#define AI_COMMONMETADATA_H_INC
+
+/// Scene metadata holding the name of the importer which loaded the source asset.
+/// This is always present if the scene was created from an imported asset.
+#define AI_METADATA_SOURCE_FORMAT "SourceAsset_Format"
+
+/// Scene metadata holding the version of the source asset as a string, if available.
+#define AI_METADATA_SOURCE_FORMAT_VERSION "SourceAsset_FormatVersion"
+
+/// Scene metadata holding the name of the software which generated the source asset, if available.
+#define AI_METADATA_SOURCE_GENERATOR "SourceAsset_Generator"
+
+#endif

include/assimp/metadata.h

@@ -377,6 +377,20 @@ struct aiMetadata {
 		return true;
 	}
 
+    /// Check whether there is a metadata entry for the given key.
+    /// \param [in] Key - the key value value to check for.
+    inline
+    bool HasKey(const char* key)
+    {
+        // Search for the given key
+        for (unsigned int i = 0; i < mNumProperties; ++i) {
+            if (strcmp(mKeys[i].C_Str(), key) == 0) {
+                return true;
+            }
+        }
+        return false;
+    }
+
 #endif // __cplusplus
 
 };