Flutter/Android - create local copy of headers

thermion_flutter/thermion_flutter/android/CMakeLists.txt

@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.10)  
 
-include_directories(${CMAKE_CURRENT_SOURCE_DIR}/../../../thermion_dart/native/include)
+include_directories(src/main/include)
 include_directories(src/main/cpp)
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 set(ANDROID_STL c++_shared)

thermion_flutter/thermion_flutter/android/src/main/cpp/ThermionFlutterAndroid.cpp

@@ -1,9 +1,12 @@
 #include <android/native_window_jni.h>
 #include <android/native_activity.h>
 
-#include "ThermionDartFFIApi.h"
+#include "ResourceBuffer.h"
 
 extern "C" {
+
+  typedef void (*FilamentRenderCallback)(void *const owner);
+
   void* get_native_window_from_surface(
     jobject surface,
     JNIEnv* env

thermion_flutter/thermion_flutter/android/src/main/include/ResourceBuffer.h

@@ -0,0 +1,44 @@
+#ifndef RESOURCE_BUFFER_H
+#define RESOURCE_BUFFER_H
+
+#include <stdint.h>
+#include <stdlib.h>
+
+//
+// A ResourceBuffer is a unified interface for working with
+// binary assets across various platforms.
+// This is simply:
+// 1) a pointer to some data
+// 2) the length of the data
+// 3) an ID that can be passed back to the native platform to release the underlying asset when needed.
+//
+typedef struct ResourceBuffer
+{
+  const void *const data;
+  const int32_t size;
+  const int32_t id;
+
+#if defined(__cplusplus)
+  ResourceBuffer(void *const data, int32_t size, int32_t id) : data(data), size(size), id(id) {}
+#endif
+} ResourceBuffer;
+
+typedef void (*LoadFilamentResourceIntoOutPointer)(const char *uri, ResourceBuffer *out);
+typedef ResourceBuffer (*LoadFilamentResource)(const char *uri);
+typedef ResourceBuffer (*LoadFilamentResourceFromOwner)(const char *const, void *const owner);
+typedef void (*FreeFilamentResource)(ResourceBuffer);
+typedef void (*FreeFilamentResourceFromOwner)(ResourceBuffer, void *const owner);
+
+typedef struct ResourceLoaderWrapper
+{
+  LoadFilamentResource loadResource;
+  FreeFilamentResource freeResource;
+  LoadFilamentResourceFromOwner loadFromOwner;
+  FreeFilamentResourceFromOwner freeFromOwner;
+  void *owner;
+  LoadFilamentResourceIntoOutPointer loadToOut;
+} ResourceLoaderWrapper;
+
+void *make_resource_loader(LoadFilamentResourceFromOwner loadFn, FreeFilamentResourceFromOwner freeFn, void *const owner);
+
+#endif

thermion_flutter/thermion_flutter/pubspec.yaml

@@ -1,6 +1,6 @@
 name: thermion_flutter
 description: Flutter plugin for 3D rendering with the Thermion toolkit.
-version: 0.0.2
+version: 0.0.3
 homepage: https://docs.page/nmfisher/thermion
 repository: https://github.com/nmfisher/thermion