增加MNN模型支持

cxx/common/node.h

@@ -6,8 +6,7 @@
 #include <napi.h>
 
 #define NODE_INIT_OBJECT(name, function)                 \
-	do                                                   \
-	{                                                    \
+	do {                                                 \
 		auto obj = Napi::Object::New(env);               \
 		function(env, obj);                              \
 		exports.Set(Napi::String::New(env, #name), obj); \
@@ -21,4 +20,13 @@ inline uint64_t __node_ptr_of__(Napi::Value value)
 
 #define NODE_PTR_OF(type, value) (reinterpret_cast<type *>(__node_ptr_of__(value)))
 
+
+inline void *dataFromTypedArray(const Napi::Value &val, size_t &bytes)
+{
+	auto arr = val.As<Napi::TypedArray>();
+	auto data = static_cast<uint8_t *>(arr.ArrayBuffer().Data());
+	bytes = arr.ByteLength();
+	return static_cast<void *>(data + arr.ByteOffset());
+}
+
 #endif