// Copyright (c) Microsoft Corporation
// All rights reserved. 
//
// Licensed under the Apache License, Version 2.0 (the ""License""); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 
//
// THIS CODE IS PROVIDED ON AN  *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABLITY OR NON-INFRINGEMENT. 
//
// See the Apache Version 2.0 License for specific language governing permissions and limitations under the License.

// TODO: Verify that this is is still needed..
#define NTDDI_VERSION 0x06010000

#include <v8.h>
#include "nan.h"
#include <string>
#include <ppltasks.h>
#include "CollectionsConverter.h"
#include "CollectionsWrap.h"
#include "node-async.h"
#include "NodeRtUtils.h"
#include "OpaqueWrapper.h"
#include "WrapperBase.h"

#using <Windows.WinMD>

// this undefs fixes the issues of compiling Windows.Data.Json, Windows.Storag.FileProperties, and Windows.Stroage.Search
// Some of the node header files brings windows definitions with the same names as some of the WinRT methods
#undef DocumentProperties
#undef GetObject
#undef CreateEvent
#undef FindText
#undef SendMessage

const char* REGISTRATION_TOKEN_MAP_PROPERTY_NAME = "__registrationTokenMap__";

using v8::Array;
using v8::String;
using v8::Handle;
using v8::Value;
using v8::Boolean;
using v8::Integer;
using v8::FunctionTemplate;
using v8::Object;
using v8::Local;
using v8::Function;
using v8::Date;
using v8::Number;
using v8::PropertyAttribute;
using v8::Primitive;
using Nan::HandleScope;
using Nan::Persistent;
using Nan::Undefined;
using Nan::True;
using Nan::False;
using Nan::Null;
using Nan::MaybeLocal;
using Nan::EscapableHandleScope;
using Nan::HandleScope;
using Nan::TryCatch;
using namespace concurrency;

namespace NodeRT { namespace Windows { namespace Media { namespace Editing { 

  v8::Local<v8::Value> WrapMediaOverlay(::Windows::Media::Editing::MediaOverlay^ wintRtInstance);
  ::Windows::Media::Editing::MediaOverlay^ UnwrapMediaOverlay(Local<Value> value);
  
  v8::Local<v8::Value> WrapMediaClip(::Windows::Media::Editing::MediaClip^ wintRtInstance);
  ::Windows::Media::Editing::MediaClip^ UnwrapMediaClip(Local<Value> value);
  
  v8::Local<v8::Value> WrapEmbeddedAudioTrack(::Windows::Media::Editing::EmbeddedAudioTrack^ wintRtInstance);
  ::Windows::Media::Editing::EmbeddedAudioTrack^ UnwrapEmbeddedAudioTrack(Local<Value> value);
  
  v8::Local<v8::Value> WrapBackgroundAudioTrack(::Windows::Media::Editing::BackgroundAudioTrack^ wintRtInstance);
  ::Windows::Media::Editing::BackgroundAudioTrack^ UnwrapBackgroundAudioTrack(Local<Value> value);
  
  v8::Local<v8::Value> WrapMediaComposition(::Windows::Media::Editing::MediaComposition^ wintRtInstance);
  ::Windows::Media::Editing::MediaComposition^ UnwrapMediaComposition(Local<Value> value);
  
  v8::Local<v8::Value> WrapMediaOverlayLayer(::Windows::Media::Editing::MediaOverlayLayer^ wintRtInstance);
  ::Windows::Media::Editing::MediaOverlayLayer^ UnwrapMediaOverlayLayer(Local<Value> value);
  


  static void InitVideoFramePrecisionEnum(const Local<Object> exports)
  {
    HandleScope scope;
    
	Local<Object> enumObject = Nan::New<Object>();
    Nan::Set(exports, Nan::New<String>("VideoFramePrecision").ToLocalChecked(), enumObject);
	Nan::Set(enumObject, Nan::New<String>("nearestFrame").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Media::Editing::VideoFramePrecision::NearestFrame)));
	Nan::Set(enumObject, Nan::New<String>("nearestKeyFrame").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Media::Editing::VideoFramePrecision::NearestKeyFrame)));
  }


  static void InitMediaTrimmingPreferenceEnum(const Local<Object> exports)
  {
    HandleScope scope;
    
	Local<Object> enumObject = Nan::New<Object>();
    Nan::Set(exports, Nan::New<String>("MediaTrimmingPreference").ToLocalChecked(), enumObject);
	Nan::Set(enumObject, Nan::New<String>("fast").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Media::Editing::MediaTrimmingPreference::Fast)));
	Nan::Set(enumObject, Nan::New<String>("precise").ToLocalChecked(), Nan::New<Integer>(static_cast<int>(::Windows::Media::Editing::MediaTrimmingPreference::Precise)));
  }



  
  static bool IsRectJsObject(Local<Value> value)
  {
    if (!value->IsObject())
    {
      return false;
    }

    Local<String> symbol;
    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();

    return true;
  }

  ::Windows::Foundation::Rect RectFromJsObject(Local<Value> value)
  {
    HandleScope scope;
    ::Windows::Foundation::Rect returnValue;
    
    if (!value->IsObject())
    {
      Nan::ThrowError(Nan::TypeError(NodeRT::Utils::NewString(L"Unexpected type, expected an object")));
      return returnValue;
    }

    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();
    Local<String> symbol;

    return returnValue;
  }

  Local<Value> RectToJsObject(::Windows::Foundation::Rect value)
  {
    EscapableHandleScope scope;

    Local<Object> obj = Nan::New<Object>();

    
    return scope.Escape(obj);
  }

  
  static bool IsColorJsObject(Local<Value> value)
  {
    if (!value->IsObject())
    {
      return false;
    }

    Local<String> symbol;
    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();

    return true;
  }

  ::Windows::UI::Color ColorFromJsObject(Local<Value> value)
  {
    HandleScope scope;
    ::Windows::UI::Color returnValue;
    
    if (!value->IsObject())
    {
      Nan::ThrowError(Nan::TypeError(NodeRT::Utils::NewString(L"Unexpected type, expected an object")));
      return returnValue;
    }

    Local<Object> obj = Nan::To<Object>(value).ToLocalChecked();
    Local<String> symbol;

    return returnValue;
  }

  Local<Value> ColorToJsObject(::Windows::UI::Color value)
  {
    EscapableHandleScope scope;

    Local<Object> obj = Nan::New<Object>();

    
    return scope.Escape(obj);
  }

  
  class MediaOverlay : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("MediaOverlay").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
            
      Nan::SetPrototypeMethod(localRef, "clone", Clone);
      
                        
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("position").ToLocalChecked(), PositionGetter, PositionSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("opacity").ToLocalChecked(), OpacityGetter, OpacitySetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("delay").ToLocalChecked(), DelayGetter, DelaySetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("audioEnabled").ToLocalChecked(), AudioEnabledGetter, AudioEnabledSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("clip").ToLocalChecked(), ClipGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);


      Nan::Set(exports, Nan::New<String>("MediaOverlay").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    MediaOverlay(::Windows::Media::Editing::MediaOverlay^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::MediaOverlay^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::MediaOverlay^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 1
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info[0]))
      {
        try
        {
          ::Windows::Media::Editing::MediaClip^ arg0 = UnwrapMediaClip(info[0]);
          
          winRtInstance = ref new ::Windows::Media::Editing::MediaOverlay(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 3
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info[0])
        && NodeRT::Utils::IsRect(info[1])
        && info[2]->IsNumber())
      {
        try
        {
          ::Windows::Media::Editing::MediaClip^ arg0 = UnwrapMediaClip(info[0]);
          ::Windows::Foundation::Rect arg1 = NodeRT::Utils::RectFromJs(info[1]);
          double arg2 = Nan::To<double>(info[2]).FromMaybe(0.0);
          
          winRtInstance = ref new ::Windows::Media::Editing::MediaOverlay(arg0,arg1,arg2);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      MediaOverlay *wrapperInstance = new MediaOverlay(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::MediaOverlay^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::MediaOverlay^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapMediaOverlay(winRtInstance));
    }


  
    static void Clone(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Editing::MediaOverlay^ result;
          result = wrapper->_instance->Clone();
          info.GetReturnValue().Set(WrapMediaOverlay(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }



    static void PositionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        ::Windows::Foundation::Rect result = wrapper->_instance->Position;
        info.GetReturnValue().Set(NodeRT::Utils::RectToJs(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void PositionSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsRect(value))
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        
        ::Windows::Foundation::Rect winRtValue = NodeRT::Utils::RectFromJs(value);

        wrapper->_instance->Position = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void OpacityGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        double result = wrapper->_instance->Opacity;
        info.GetReturnValue().Set(Nan::New<Number>(static_cast<double>(result)));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void OpacitySetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        
        double winRtValue = Nan::To<double>(value).FromMaybe(0.0);

        wrapper->_instance->Opacity = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void DelayGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->Delay;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void DelaySetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->Delay = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void AudioEnabledGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        bool result = wrapper->_instance->AudioEnabled;
        info.GetReturnValue().Set(Nan::New<Boolean>(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void AudioEnabledSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsBoolean())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        
        bool winRtValue = Nan::To<bool>(value).FromMaybe(false);

        wrapper->_instance->AudioEnabled = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void ClipGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(info.This()))
      {
        return;
      }

      MediaOverlay *wrapper = MediaOverlay::Unwrap<MediaOverlay>(info.This());

      try 
      {
        ::Windows::Media::Editing::MediaClip^ result = wrapper->_instance->Clip;
        info.GetReturnValue().Set(WrapMediaClip(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Media::Editing::MediaOverlay^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapMediaOverlay(::Windows::Media::Editing::MediaOverlay^ wintRtInstance);
    friend ::Windows::Media::Editing::MediaOverlay^ UnwrapMediaOverlay(Local<Value> value);
  };
  Persistent<FunctionTemplate> MediaOverlay::s_constructorTemplate;

  v8::Local<v8::Value> WrapMediaOverlay(::Windows::Media::Editing::MediaOverlay^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(MediaOverlay::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::MediaOverlay^ UnwrapMediaOverlay(Local<Value> value)
  {
     return MediaOverlay::Unwrap<MediaOverlay>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitMediaOverlay(Local<Object> exports)
  {
    MediaOverlay::Init(exports);
  }

  class MediaClip : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("MediaClip").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
      Local<Function> func;
      Local<FunctionTemplate> funcTemplate;
            
      Nan::SetPrototypeMethod(localRef, "clone", Clone);
      Nan::SetPrototypeMethod(localRef, "getVideoEncodingProperties", GetVideoEncodingProperties);
      
                        
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("selectedEmbeddedAudioTrackIndex").ToLocalChecked(), SelectedEmbeddedAudioTrackIndexGetter, SelectedEmbeddedAudioTrackIndexSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimTimeFromEnd").ToLocalChecked(), TrimTimeFromEndGetter, TrimTimeFromEndSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("volume").ToLocalChecked(), VolumeGetter, VolumeSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimTimeFromStart").ToLocalChecked(), TrimTimeFromStartGetter, TrimTimeFromStartSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("embeddedAudioTracks").ToLocalChecked(), EmbeddedAudioTracksGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("endTimeInComposition").ToLocalChecked(), EndTimeInCompositionGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("originalDuration").ToLocalChecked(), OriginalDurationGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("startTimeInComposition").ToLocalChecked(), StartTimeInCompositionGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimmedDuration").ToLocalChecked(), TrimmedDurationGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("userData").ToLocalChecked(), UserDataGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("videoEffectDefinitions").ToLocalChecked(), VideoEffectDefinitionsGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("audioEffectDefinitions").ToLocalChecked(), AudioEffectDefinitionsGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);

      Nan::SetMethod(constructor, "createFromSurface", CreateFromSurface);
      Nan::SetMethod(constructor, "createFromColor", CreateFromColor);
      func = Nan::GetFunction(Nan::New<FunctionTemplate>(CreateFromFileAsync)).ToLocalChecked();
      Nan::Set(constructor, Nan::New<String>("createFromFileAsync").ToLocalChecked(), func);
      func = Nan::GetFunction(Nan::New<FunctionTemplate>(CreateFromImageFileAsync)).ToLocalChecked();
      Nan::Set(constructor, Nan::New<String>("createFromImageFileAsync").ToLocalChecked(), func);

      Nan::Set(exports, Nan::New<String>("MediaClip").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    MediaClip(::Windows::Media::Editing::MediaClip^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::MediaClip^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::MediaClip^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      MediaClip *wrapperInstance = new MediaClip(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::MediaClip^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::MediaClip^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapMediaClip(winRtInstance));
    }


  
    static void Clone(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Editing::MediaClip^ result;
          result = wrapper->_instance->Clone();
          info.GetReturnValue().Set(WrapMediaClip(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void GetVideoEncodingProperties(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::MediaProperties::VideoEncodingProperties^ result;
          result = wrapper->_instance->GetVideoEncodingProperties();
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.MediaProperties", "VideoEncodingProperties", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void CreateFromFileAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::Editing::MediaClip^>^ op;
      

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0]))
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = ::Windows::Media::Editing::MediaClip::CreateFromFileAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::Editing::MediaClip^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            
            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = WrapMediaClip(result);
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

	  	    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
          
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }
    static void CreateFromImageFileAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::Editing::MediaClip^>^ op;
      

      if (info.Length() == 3
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0])
        && info[1]->IsNumber())
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          ::Windows::Foundation::TimeSpan arg1 = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(info[1]).FromMaybe(0));
          
          op = ::Windows::Media::Editing::MediaClip::CreateFromImageFileAsync(arg0,arg1);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::Editing::MediaClip^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            
            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = WrapMediaClip(result);
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

	  	    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
          
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }

    static void CreateFromSurface(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Graphics::DirectX::Direct3D11::IDirect3DSurface^>(info[0])
        && info[1]->IsNumber())
      {
        try
        {
          ::Windows::Graphics::DirectX::Direct3D11::IDirect3DSurface^ arg0 = dynamic_cast<::Windows::Graphics::DirectX::Direct3D11::IDirect3DSurface^>(NodeRT::Utils::GetObjectInstance(info[0]));
          ::Windows::Foundation::TimeSpan arg1 = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(info[1]).FromMaybe(0));
          
          ::Windows::Media::Editing::MediaClip^ result;
          result = ::Windows::Media::Editing::MediaClip::CreateFromSurface(arg0, arg1);
          info.GetReturnValue().Set(WrapMediaClip(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void CreateFromColor(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 2
        && NodeRT::Utils::IsColor(info[0])
        && info[1]->IsNumber())
      {
        try
        {
          ::Windows::UI::Color arg0 = NodeRT::Utils::ColorFromJs(info[0]);
          ::Windows::Foundation::TimeSpan arg1 = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(info[1]).FromMaybe(0));
          
          ::Windows::Media::Editing::MediaClip^ result;
          result = ::Windows::Media::Editing::MediaClip::CreateFromColor(arg0, arg1);
          info.GetReturnValue().Set(WrapMediaClip(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void SelectedEmbeddedAudioTrackIndexGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        unsigned int result = wrapper->_instance->SelectedEmbeddedAudioTrackIndex;
        info.GetReturnValue().Set(Nan::New<Integer>(result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void SelectedEmbeddedAudioTrackIndexSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsUint32())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        
        unsigned int winRtValue = static_cast<unsigned int>(Nan::To<uint32_t>(value).FromMaybe(0));

        wrapper->_instance->SelectedEmbeddedAudioTrackIndex = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void TrimTimeFromEndGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimTimeFromEnd;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimTimeFromEndSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->TrimTimeFromEnd = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void VolumeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        double result = wrapper->_instance->Volume;
        info.GetReturnValue().Set(Nan::New<Number>(static_cast<double>(result)));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void VolumeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        
        double winRtValue = Nan::To<double>(value).FromMaybe(0.0);

        wrapper->_instance->Volume = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void TrimTimeFromStartGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimTimeFromStart;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimTimeFromStartSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->TrimTimeFromStart = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void EmbeddedAudioTracksGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVectorView<::Windows::Media::Editing::EmbeddedAudioTrack^>^ result = wrapper->_instance->EmbeddedAudioTracks;
        info.GetReturnValue().Set(NodeRT::Collections::VectorViewWrapper<::Windows::Media::Editing::EmbeddedAudioTrack^>::CreateVectorViewWrapper(result, 
            [](::Windows::Media::Editing::EmbeddedAudioTrack^ val) -> Local<Value> {
              return WrapEmbeddedAudioTrack(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::EmbeddedAudioTrack^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Editing::EmbeddedAudioTrack^ {
              return UnwrapEmbeddedAudioTrack(value);
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void EndTimeInCompositionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->EndTimeInComposition;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void OriginalDurationGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->OriginalDuration;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void StartTimeInCompositionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->StartTimeInComposition;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimmedDurationGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimmedDuration;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void UserDataGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IMap<::Platform::String^, ::Platform::String^>^ result = wrapper->_instance->UserData;
        info.GetReturnValue().Set(NodeRT::Collections::MapWrapper<::Platform::String^,::Platform::String^>::CreateMapWrapper(result, 
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            },
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void VideoEffectDefinitionsGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Effects::IVideoEffectDefinition^>^ result = wrapper->_instance->VideoEffectDefinitions;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Effects::IVideoEffectDefinition^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Effects::IVideoEffectDefinition^ val) -> Local<Value> {
              return NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Effects", "IVideoEffectDefinition", val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Effects::IVideoEffectDefinition^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Effects::IVideoEffectDefinition^ {
              return dynamic_cast<::Windows::Media::Effects::IVideoEffectDefinition^>(NodeRT::Utils::GetObjectInstance(value));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void AudioEffectDefinitionsGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(info.This()))
      {
        return;
      }

      MediaClip *wrapper = MediaClip::Unwrap<MediaClip>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Effects::IAudioEffectDefinition^>^ result = wrapper->_instance->AudioEffectDefinitions;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Effects::IAudioEffectDefinition^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Effects::IAudioEffectDefinition^ val) -> Local<Value> {
              return NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Effects", "IAudioEffectDefinition", val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Effects::IAudioEffectDefinition^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Effects::IAudioEffectDefinition^ {
              return dynamic_cast<::Windows::Media::Effects::IAudioEffectDefinition^>(NodeRT::Utils::GetObjectInstance(value));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Media::Editing::MediaClip^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapMediaClip(::Windows::Media::Editing::MediaClip^ wintRtInstance);
    friend ::Windows::Media::Editing::MediaClip^ UnwrapMediaClip(Local<Value> value);
  };
  Persistent<FunctionTemplate> MediaClip::s_constructorTemplate;

  v8::Local<v8::Value> WrapMediaClip(::Windows::Media::Editing::MediaClip^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(MediaClip::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::MediaClip^ UnwrapMediaClip(Local<Value> value)
  {
     return MediaClip::Unwrap<MediaClip>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitMediaClip(Local<Object> exports)
  {
    MediaClip::Init(exports);
  }

  class EmbeddedAudioTrack : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("EmbeddedAudioTrack").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
            
      Nan::SetPrototypeMethod(localRef, "getAudioEncodingProperties", GetAudioEncodingProperties);
      
                        
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);


      Nan::Set(exports, Nan::New<String>("EmbeddedAudioTrack").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    EmbeddedAudioTrack(::Windows::Media::Editing::EmbeddedAudioTrack^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::EmbeddedAudioTrack^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::EmbeddedAudioTrack^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::EmbeddedAudioTrack^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      EmbeddedAudioTrack *wrapperInstance = new EmbeddedAudioTrack(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::EmbeddedAudioTrack^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::EmbeddedAudioTrack^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::EmbeddedAudioTrack^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapEmbeddedAudioTrack(winRtInstance));
    }


  
    static void GetAudioEncodingProperties(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::EmbeddedAudioTrack^>(info.This()))
      {
        return;
      }

      EmbeddedAudioTrack *wrapper = EmbeddedAudioTrack::Unwrap<EmbeddedAudioTrack>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::MediaProperties::AudioEncodingProperties^ result;
          result = wrapper->_instance->GetAudioEncodingProperties();
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.MediaProperties", "AudioEncodingProperties", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }





  private:
    ::Windows::Media::Editing::EmbeddedAudioTrack^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapEmbeddedAudioTrack(::Windows::Media::Editing::EmbeddedAudioTrack^ wintRtInstance);
    friend ::Windows::Media::Editing::EmbeddedAudioTrack^ UnwrapEmbeddedAudioTrack(Local<Value> value);
  };
  Persistent<FunctionTemplate> EmbeddedAudioTrack::s_constructorTemplate;

  v8::Local<v8::Value> WrapEmbeddedAudioTrack(::Windows::Media::Editing::EmbeddedAudioTrack^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(EmbeddedAudioTrack::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::EmbeddedAudioTrack^ UnwrapEmbeddedAudioTrack(Local<Value> value)
  {
     return EmbeddedAudioTrack::Unwrap<EmbeddedAudioTrack>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitEmbeddedAudioTrack(Local<Object> exports)
  {
    EmbeddedAudioTrack::Init(exports);
  }

  class BackgroundAudioTrack : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("BackgroundAudioTrack").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
      Local<Function> func;
      Local<FunctionTemplate> funcTemplate;
            
      Nan::SetPrototypeMethod(localRef, "clone", Clone);
      Nan::SetPrototypeMethod(localRef, "getAudioEncodingProperties", GetAudioEncodingProperties);
      
                        
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("volume").ToLocalChecked(), VolumeGetter, VolumeSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimTimeFromStart").ToLocalChecked(), TrimTimeFromStartGetter, TrimTimeFromStartSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimTimeFromEnd").ToLocalChecked(), TrimTimeFromEndGetter, TrimTimeFromEndSetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("delay").ToLocalChecked(), DelayGetter, DelaySetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("audioEffectDefinitions").ToLocalChecked(), AudioEffectDefinitionsGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("originalDuration").ToLocalChecked(), OriginalDurationGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("trimmedDuration").ToLocalChecked(), TrimmedDurationGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("userData").ToLocalChecked(), UserDataGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);

      Nan::SetMethod(constructor, "createFromEmbeddedAudioTrack", CreateFromEmbeddedAudioTrack);
      func = Nan::GetFunction(Nan::New<FunctionTemplate>(CreateFromFileAsync)).ToLocalChecked();
      Nan::Set(constructor, Nan::New<String>("createFromFileAsync").ToLocalChecked(), func);

      Nan::Set(exports, Nan::New<String>("BackgroundAudioTrack").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    BackgroundAudioTrack(::Windows::Media::Editing::BackgroundAudioTrack^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::BackgroundAudioTrack^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::BackgroundAudioTrack^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      BackgroundAudioTrack *wrapperInstance = new BackgroundAudioTrack(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::BackgroundAudioTrack^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::BackgroundAudioTrack^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapBackgroundAudioTrack(winRtInstance));
    }


  
    static void Clone(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Editing::BackgroundAudioTrack^ result;
          result = wrapper->_instance->Clone();
          info.GetReturnValue().Set(WrapBackgroundAudioTrack(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void GetAudioEncodingProperties(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::MediaProperties::AudioEncodingProperties^ result;
          result = wrapper->_instance->GetAudioEncodingProperties();
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.MediaProperties", "AudioEncodingProperties", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void CreateFromFileAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::Editing::BackgroundAudioTrack^>^ op;
      

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0]))
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = ::Windows::Media::Editing::BackgroundAudioTrack::CreateFromFileAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::Editing::BackgroundAudioTrack^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            
            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = WrapBackgroundAudioTrack(result);
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

	  	    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
          
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }

    static void CreateFromEmbeddedAudioTrack(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 1
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::EmbeddedAudioTrack^>(info[0]))
      {
        try
        {
          ::Windows::Media::Editing::EmbeddedAudioTrack^ arg0 = UnwrapEmbeddedAudioTrack(info[0]);
          
          ::Windows::Media::Editing::BackgroundAudioTrack^ result;
          result = ::Windows::Media::Editing::BackgroundAudioTrack::CreateFromEmbeddedAudioTrack(arg0);
          info.GetReturnValue().Set(WrapBackgroundAudioTrack(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void VolumeGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        double result = wrapper->_instance->Volume;
        info.GetReturnValue().Set(Nan::New<Number>(static_cast<double>(result)));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void VolumeSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        
        double winRtValue = Nan::To<double>(value).FromMaybe(0.0);

        wrapper->_instance->Volume = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void TrimTimeFromStartGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimTimeFromStart;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimTimeFromStartSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->TrimTimeFromStart = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void TrimTimeFromEndGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimTimeFromEnd;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimTimeFromEndSetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->TrimTimeFromEnd = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void DelayGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->Delay;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void DelaySetter(Local<String> property, Local<Value> value, const Nan::PropertyCallbackInfo<void> &info)
    {
      HandleScope scope;
      
      if (!value->IsNumber())
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Value to set is of unexpected type")));
        return;
      }

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        
        ::Windows::Foundation::TimeSpan winRtValue = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));

        wrapper->_instance->Delay = winRtValue;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
      }
    }
    
    static void AudioEffectDefinitionsGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Effects::IAudioEffectDefinition^>^ result = wrapper->_instance->AudioEffectDefinitions;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Effects::IAudioEffectDefinition^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Effects::IAudioEffectDefinition^ val) -> Local<Value> {
              return NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Effects", "IAudioEffectDefinition", val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Effects::IAudioEffectDefinition^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Effects::IAudioEffectDefinition^ {
              return dynamic_cast<::Windows::Media::Effects::IAudioEffectDefinition^>(NodeRT::Utils::GetObjectInstance(value));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void OriginalDurationGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->OriginalDuration;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void TrimmedDurationGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->TrimmedDuration;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void UserDataGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(info.This()))
      {
        return;
      }

      BackgroundAudioTrack *wrapper = BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IMap<::Platform::String^, ::Platform::String^>^ result = wrapper->_instance->UserData;
        info.GetReturnValue().Set(NodeRT::Collections::MapWrapper<::Platform::String^,::Platform::String^>::CreateMapWrapper(result, 
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            },
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Media::Editing::BackgroundAudioTrack^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapBackgroundAudioTrack(::Windows::Media::Editing::BackgroundAudioTrack^ wintRtInstance);
    friend ::Windows::Media::Editing::BackgroundAudioTrack^ UnwrapBackgroundAudioTrack(Local<Value> value);
  };
  Persistent<FunctionTemplate> BackgroundAudioTrack::s_constructorTemplate;

  v8::Local<v8::Value> WrapBackgroundAudioTrack(::Windows::Media::Editing::BackgroundAudioTrack^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(BackgroundAudioTrack::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::BackgroundAudioTrack^ UnwrapBackgroundAudioTrack(Local<Value> value)
  {
     return BackgroundAudioTrack::Unwrap<BackgroundAudioTrack>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitBackgroundAudioTrack(Local<Object> exports)
  {
    BackgroundAudioTrack::Init(exports);
  }

  class MediaComposition : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("MediaComposition").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
      Local<Function> func;
      Local<FunctionTemplate> funcTemplate;
            
      Nan::SetPrototypeMethod(localRef, "clone", Clone);
      Nan::SetPrototypeMethod(localRef, "createDefaultEncodingProfile", CreateDefaultEncodingProfile);
      Nan::SetPrototypeMethod(localRef, "generateMediaStreamSource", GenerateMediaStreamSource);
      Nan::SetPrototypeMethod(localRef, "generatePreviewMediaStreamSource", GeneratePreviewMediaStreamSource);
      
            
      Nan::SetPrototypeMethod(localRef, "saveAsync", SaveAsync);
      Nan::SetPrototypeMethod(localRef, "getThumbnailAsync", GetThumbnailAsync);
      Nan::SetPrototypeMethod(localRef, "getThumbnailsAsync", GetThumbnailsAsync);
      Nan::SetPrototypeMethod(localRef, "renderToFileAsync", RenderToFileAsync);
      
                  
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("backgroundAudioTracks").ToLocalChecked(), BackgroundAudioTracksGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("clips").ToLocalChecked(), ClipsGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("duration").ToLocalChecked(), DurationGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("userData").ToLocalChecked(), UserDataGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("overlayLayers").ToLocalChecked(), OverlayLayersGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);

      func = Nan::GetFunction(Nan::New<FunctionTemplate>(LoadAsync)).ToLocalChecked();
      Nan::Set(constructor, Nan::New<String>("loadAsync").ToLocalChecked(), func);

      Nan::Set(exports, Nan::New<String>("MediaComposition").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    MediaComposition(::Windows::Media::Editing::MediaComposition^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::MediaComposition^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::MediaComposition^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 0)
      {
        try
        {
          winRtInstance = ref new ::Windows::Media::Editing::MediaComposition();
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      MediaComposition *wrapperInstance = new MediaComposition(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::MediaComposition^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::MediaComposition^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapMediaComposition(winRtInstance));
    }


    static void SaveAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      ::Windows::Foundation::IAsyncAction^ op;
    

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0]))
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = wrapper->_instance->SaveAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<void> t) 
      {	
        try
        {
          t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            Local<Value> args[] = {Undefined()};

		    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
             
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }
    static void GetThumbnailAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      ::Windows::Foundation::IAsyncOperation<::Windows::Graphics::Imaging::ImageStream^>^ op;
    

      if (info.Length() == 5
        && info[0]->IsNumber()
        && info[1]->IsInt32()
        && info[2]->IsInt32()
        && info[3]->IsInt32())
      {
        try
        {
          ::Windows::Foundation::TimeSpan arg0 = NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(info[0]).FromMaybe(0));
          int arg1 = static_cast<int>(Nan::To<int32_t>(info[1]).FromMaybe(0));
          int arg2 = static_cast<int>(Nan::To<int32_t>(info[2]).FromMaybe(0));
          ::Windows::Media::Editing::VideoFramePrecision arg3 = static_cast<::Windows::Media::Editing::VideoFramePrecision>(Nan::To<int32_t>(info[3]).FromMaybe(0));
          
          op = wrapper->_instance->GetThumbnailAsync(arg0,arg1,arg2,arg3);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Graphics::Imaging::ImageStream^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = NodeRT::Utils::CreateExternalWinRTObject("Windows.Graphics.Imaging", "ImageStream", result);
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

		    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
             
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }
    static void GetThumbnailsAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      ::Windows::Foundation::IAsyncOperation<::Windows::Foundation::Collections::IVectorView<::Windows::Graphics::Imaging::ImageStream^>^>^ op;
    

      if (info.Length() == 5
        && (NodeRT::Utils::IsWinRtWrapperOf<::Windows::Foundation::Collections::IIterable<::Windows::Foundation::TimeSpan>^>(info[0]) || info[0]->IsArray())
        && info[1]->IsInt32()
        && info[2]->IsInt32()
        && info[3]->IsInt32())
      {
        try
        {
          ::Windows::Foundation::Collections::IIterable<::Windows::Foundation::TimeSpan>^ arg0 = 
            [] (v8::Local<v8::Value> value) -> ::Windows::Foundation::Collections::IIterable<::Windows::Foundation::TimeSpan>^
            {
              if (value->IsArray())
              {
                return NodeRT::Collections::JsArrayToWinrtVector<::Windows::Foundation::TimeSpan>(value.As<Array>(), 
                 [](Local<Value> value) -> bool {
                   return value->IsNumber();
                 },
                 [](Local<Value> value) -> ::Windows::Foundation::TimeSpan {
                   return NodeRT::Utils::TimeSpanFromMilli(Nan::To<int64_t>(value).FromMaybe(0));
                 }
                );
              }
              else
              {
                return dynamic_cast<::Windows::Foundation::Collections::IIterable<::Windows::Foundation::TimeSpan>^>(NodeRT::Utils::GetObjectInstance(value));
              }
            } (info[0]);
          int arg1 = static_cast<int>(Nan::To<int32_t>(info[1]).FromMaybe(0));
          int arg2 = static_cast<int>(Nan::To<int32_t>(info[2]).FromMaybe(0));
          ::Windows::Media::Editing::VideoFramePrecision arg3 = static_cast<::Windows::Media::Editing::VideoFramePrecision>(Nan::To<int32_t>(info[3]).FromMaybe(0));
          
          op = wrapper->_instance->GetThumbnailsAsync(arg0,arg1,arg2,arg3);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Foundation::Collections::IVectorView<::Windows::Graphics::Imaging::ImageStream^>^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = NodeRT::Collections::VectorViewWrapper<::Windows::Graphics::Imaging::ImageStream^>::CreateVectorViewWrapper(result, 
            [](::Windows::Graphics::Imaging::ImageStream^ val) -> Local<Value> {
              return NodeRT::Utils::CreateExternalWinRTObject("Windows.Graphics.Imaging", "ImageStream", val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Graphics::Imaging::ImageStream^>(value);
            },
            [](Local<Value> value) -> ::Windows::Graphics::Imaging::ImageStream^ {
              return dynamic_cast<::Windows::Graphics::Imaging::ImageStream^>(NodeRT::Utils::GetObjectInstance(value));
            }
          );
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

		    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
             
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }
    static void RenderToFileAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      ::Windows::Foundation::IAsyncOperationWithProgress<::Windows::Media::Transcoding::TranscodeFailureReason, double>^ op;
    

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0]))
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = wrapper->_instance->RenderToFileAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 3
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0])
        && info[1]->IsInt32())
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          ::Windows::Media::Editing::MediaTrimmingPreference arg1 = static_cast<::Windows::Media::Editing::MediaTrimmingPreference>(Nan::To<int32_t>(info[1]).FromMaybe(0));
          
          op = wrapper->_instance->RenderToFileAsync(arg0,arg1);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 4
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::IStorageFile^>(info[0])
        && info[1]->IsInt32()
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::MediaProperties::MediaEncodingProfile^>(info[2]))
      {
        try
        {
          ::Windows::Storage::IStorageFile^ arg0 = dynamic_cast<::Windows::Storage::IStorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          ::Windows::Media::Editing::MediaTrimmingPreference arg1 = static_cast<::Windows::Media::Editing::MediaTrimmingPreference>(Nan::To<int32_t>(info[1]).FromMaybe(0));
          ::Windows::Media::MediaProperties::MediaEncodingProfile^ arg2 = dynamic_cast<::Windows::Media::MediaProperties::MediaEncodingProfile^>(NodeRT::Utils::GetObjectInstance(info[2]));
          
          op = wrapper->_instance->RenderToFileAsync(arg0,arg1,arg2);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::Transcoding::TranscodeFailureReason> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {


            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = Nan::New<Integer>(static_cast<int>(result));
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

		    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
             
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }
  
    static void Clone(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Editing::MediaComposition^ result;
          result = wrapper->_instance->Clone();
          info.GetReturnValue().Set(WrapMediaComposition(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void CreateDefaultEncodingProfile(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::MediaProperties::MediaEncodingProfile^ result;
          result = wrapper->_instance->CreateDefaultEncodingProfile();
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.MediaProperties", "MediaEncodingProfile", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void GenerateMediaStreamSource(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Core::MediaStreamSource^ result;
          result = wrapper->_instance->GenerateMediaStreamSource();
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Core", "MediaStreamSource", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 1
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::MediaProperties::MediaEncodingProfile^>(info[0]))
      {
        try
        {
          ::Windows::Media::MediaProperties::MediaEncodingProfile^ arg0 = dynamic_cast<::Windows::Media::MediaProperties::MediaEncodingProfile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          ::Windows::Media::Core::MediaStreamSource^ result;
          result = wrapper->_instance->GenerateMediaStreamSource(arg0);
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Core", "MediaStreamSource", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }
    static void GeneratePreviewMediaStreamSource(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      if (info.Length() == 2
        && info[0]->IsInt32()
        && info[1]->IsInt32())
      {
        try
        {
          int arg0 = static_cast<int>(Nan::To<int32_t>(info[0]).FromMaybe(0));
          int arg1 = static_cast<int>(Nan::To<int32_t>(info[1]).FromMaybe(0));
          
          ::Windows::Media::Core::MediaStreamSource^ result;
          result = wrapper->_instance->GeneratePreviewMediaStreamSource(arg0, arg1);
          info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Core", "MediaStreamSource", result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }

    static void LoadAsync(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (info.Length() == 0 || !info[info.Length() -1]->IsFunction())
      {
          Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: No callback was given")));
          return;
      }

      ::Windows::Foundation::IAsyncOperation<::Windows::Media::Editing::MediaComposition^>^ op;
      

      if (info.Length() == 2
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Storage::StorageFile^>(info[0]))
      {
        try
        {
          ::Windows::Storage::StorageFile^ arg0 = dynamic_cast<::Windows::Storage::StorageFile^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          op = ::Windows::Media::Editing::MediaComposition::LoadAsync(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    
      auto opTask = create_task(op);
      uv_async_t* asyncToken = NodeUtils::Async::GetAsyncToken(info[info.Length() -1].As<Function>());

      opTask.then( [asyncToken] (task<::Windows::Media::Editing::MediaComposition^> t) 
      {	
        try
        {
          auto result = t.get();
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [result](NodeUtils::InvokeCallbackDelegate invokeCallback) {

            
            TryCatch tryCatch;
            Local<Value> error; 
            Local<Value> arg1 = WrapMediaComposition(result);
            if (tryCatch.HasCaught())
            {
              error = Nan::To<Object>(tryCatch.Exception()).ToLocalChecked();
            }
            else 
            {
              error = Undefined();
            }
            if (arg1.IsEmpty()) arg1 = Undefined();
            Local<Value> args[] = {error, arg1};
			// TODO: this is ugly! Needed due to the possibility of expception occuring inside object convertors
			// can be fixed by wrapping the conversion code in a function and calling it on the fly
			// we must clear the try catch block here so the invoked inner method exception won't get swollen (issue #52) 
			tryCatch.~TryCatch();

	  	    
            invokeCallback(_countof(args), args);
          });
        }
        catch (Platform::Exception^ exception)
        {
          NodeUtils::Async::RunCallbackOnMain(asyncToken, [exception](NodeUtils::InvokeCallbackDelegate invokeCallback) {
          
            Local<Value> error = NodeRT::Utils::WinRtExceptionToJsError(exception);
        
            Local<Value> args[] = {error};
            invokeCallback(_countof(args), args);
          });
        }  		
      });
    }


    static void BackgroundAudioTracksGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Editing::BackgroundAudioTrack^>^ result = wrapper->_instance->BackgroundAudioTracks;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Editing::BackgroundAudioTrack^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Editing::BackgroundAudioTrack^ val) -> Local<Value> {
              return WrapBackgroundAudioTrack(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::BackgroundAudioTrack^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Editing::BackgroundAudioTrack^ {
              return UnwrapBackgroundAudioTrack(value);
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void ClipsGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Editing::MediaClip^>^ result = wrapper->_instance->Clips;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Editing::MediaClip^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Editing::MediaClip^ val) -> Local<Value> {
              return WrapMediaClip(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaClip^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Editing::MediaClip^ {
              return UnwrapMediaClip(value);
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void DurationGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      try 
      {
        ::Windows::Foundation::TimeSpan result = wrapper->_instance->Duration;
        info.GetReturnValue().Set(Nan::New<Number>(result.Duration/10000.0));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void UserDataGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IMap<::Platform::String^, ::Platform::String^>^ result = wrapper->_instance->UserData;
        info.GetReturnValue().Set(NodeRT::Collections::MapWrapper<::Platform::String^,::Platform::String^>::CreateMapWrapper(result, 
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            },
            [](::Platform::String^ val) -> Local<Value> {
              return NodeRT::Utils::NewString(val->Data());
            },
            [](Local<Value> value) -> bool {
              return value->IsString();
            },
            [](Local<Value> value) -> ::Platform::String^ {
              return ref new Platform::String(NodeRT::Utils::StringToWchar(v8::String::Value(value)));
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void OverlayLayersGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaComposition^>(info.This()))
      {
        return;
      }

      MediaComposition *wrapper = MediaComposition::Unwrap<MediaComposition>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Editing::MediaOverlayLayer^>^ result = wrapper->_instance->OverlayLayers;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Editing::MediaOverlayLayer^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Editing::MediaOverlayLayer^ val) -> Local<Value> {
              return WrapMediaOverlayLayer(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Editing::MediaOverlayLayer^ {
              return UnwrapMediaOverlayLayer(value);
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Media::Editing::MediaComposition^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapMediaComposition(::Windows::Media::Editing::MediaComposition^ wintRtInstance);
    friend ::Windows::Media::Editing::MediaComposition^ UnwrapMediaComposition(Local<Value> value);
  };
  Persistent<FunctionTemplate> MediaComposition::s_constructorTemplate;

  v8::Local<v8::Value> WrapMediaComposition(::Windows::Media::Editing::MediaComposition^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(MediaComposition::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::MediaComposition^ UnwrapMediaComposition(Local<Value> value)
  {
     return MediaComposition::Unwrap<MediaComposition>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitMediaComposition(Local<Object> exports)
  {
    MediaComposition::Init(exports);
  }

  class MediaOverlayLayer : public WrapperBase
  {
  public:    
    static void Init(const Local<Object> exports)
    {
      HandleScope scope;
      
      Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(New);
      s_constructorTemplate.Reset(localRef);
      localRef->SetClassName(Nan::New<String>("MediaOverlayLayer").ToLocalChecked());
      localRef->InstanceTemplate()->SetInternalFieldCount(1);
      
            
      Nan::SetPrototypeMethod(localRef, "clone", Clone);
      
                        
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("customCompositorDefinition").ToLocalChecked(), CustomCompositorDefinitionGetter);
      Nan::SetAccessor(localRef->PrototypeTemplate(), Nan::New<String>("overlays").ToLocalChecked(), OverlaysGetter);
      
      Local<Object> constructor = Nan::To<Object>(Nan::GetFunction(localRef).ToLocalChecked()).ToLocalChecked();
	  Nan::SetMethod(constructor, "castFrom", CastFrom);


      Nan::Set(exports, Nan::New<String>("MediaOverlayLayer").ToLocalChecked(), constructor);
    }


    virtual ::Platform::Object^ GetObjectInstance() const override
    {
      return _instance;
    }

  private:
    
    MediaOverlayLayer(::Windows::Media::Editing::MediaOverlayLayer^ instance)
    {
      _instance = instance;
    }
    
    
    static void New(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

	    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(s_constructorTemplate);

      // in case the constructor was called without the new operator
      if (!localRef->HasInstance(info.This()))
      {
        if (info.Length() > 0)
        {
          std::unique_ptr<Local<Value> []> constructorArgs(new Local<Value>[info.Length()]);

          Local<Value> *argsPtr = constructorArgs.get();
          for (int i = 0; i < info.Length(); i++)
          {
            argsPtr[i] = info[i];
          }

		  MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), constructorArgs.get());
		  if (res.IsEmpty())
		  {
			  return;
		  }
		  info.GetReturnValue().Set(res.ToLocalChecked());
		  return;
		}
		else
		{
          MaybeLocal<Object> res = Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(), info.Length(), nullptr);
          if (res.IsEmpty())
          {
            return;
          }
          info.GetReturnValue().Set(res.ToLocalChecked());
          return;
        }
      }
      
      ::Windows::Media::Editing::MediaOverlayLayer^ winRtInstance;


      if (info.Length() == 1 && OpaqueWrapper::IsOpaqueWrapper(info[0]) &&
        NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(info[0]))
      {
        try 
        {
          winRtInstance = (::Windows::Media::Editing::MediaOverlayLayer^) NodeRT::Utils::GetObjectInstance(info[0]);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 1
        && NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Effects::IVideoCompositorDefinition^>(info[0]))
      {
        try
        {
          ::Windows::Media::Effects::IVideoCompositorDefinition^ arg0 = dynamic_cast<::Windows::Media::Effects::IVideoCompositorDefinition^>(NodeRT::Utils::GetObjectInstance(info[0]));
          
          winRtInstance = ref new ::Windows::Media::Editing::MediaOverlayLayer(arg0);
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else if (info.Length() == 0)
      {
        try
        {
          winRtInstance = ref new ::Windows::Media::Editing::MediaOverlayLayer();
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no suitable constructor found")));
	    	return;
      }

      NodeRT::Utils::SetHiddenValue(info.This(), Nan::New<String>("__winRtInstance__").ToLocalChecked(), True());

      MediaOverlayLayer *wrapperInstance = new MediaOverlayLayer(winRtInstance);
      wrapperInstance->Wrap(info.This());

      info.GetReturnValue().Set(info.This());
    }


	
    static void CastFrom(Nan::NAN_METHOD_ARGS_TYPE info)
    {
		HandleScope scope;
		if (info.Length() < 1 || !NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(info[0]))
		{
			Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Invalid arguments, no object provided, or given object could not be casted to requested type")));
			return;
		}

		::Windows::Media::Editing::MediaOverlayLayer^ winRtInstance;
		try
		{
			winRtInstance = (::Windows::Media::Editing::MediaOverlayLayer^) NodeRT::Utils::GetObjectInstance(info[0]);
		}
		catch (Platform::Exception ^exception)
		{
			NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
			return;
		}

		info.GetReturnValue().Set(WrapMediaOverlayLayer(winRtInstance));
    }


  
    static void Clone(Nan::NAN_METHOD_ARGS_TYPE info)
    {
      HandleScope scope;

      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(info.This()))
      {
        return;
      }

      MediaOverlayLayer *wrapper = MediaOverlayLayer::Unwrap<MediaOverlayLayer>(info.This());

      if (info.Length() == 0)
      {
        try
        {
          ::Windows::Media::Editing::MediaOverlayLayer^ result;
          result = wrapper->_instance->Clone();
          info.GetReturnValue().Set(WrapMediaOverlayLayer(result));
          return;
        }
        catch (Platform::Exception ^exception)
        {
          NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
          return;
        }
      }
      else 
      {
        Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"Bad arguments: no suitable overload found")));
        return;
      }
    }



    static void CustomCompositorDefinitionGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(info.This()))
      {
        return;
      }

      MediaOverlayLayer *wrapper = MediaOverlayLayer::Unwrap<MediaOverlayLayer>(info.This());

      try 
      {
        ::Windows::Media::Effects::IVideoCompositorDefinition^ result = wrapper->_instance->CustomCompositorDefinition;
        info.GetReturnValue().Set(NodeRT::Utils::CreateExternalWinRTObject("Windows.Media.Effects", "IVideoCompositorDefinition", result));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    
    static void OverlaysGetter(Local<String> property, const Nan::PropertyCallbackInfo<v8::Value> &info)
    {
      HandleScope scope;
      
      if (!NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlayLayer^>(info.This()))
      {
        return;
      }

      MediaOverlayLayer *wrapper = MediaOverlayLayer::Unwrap<MediaOverlayLayer>(info.This());

      try 
      {
        ::Windows::Foundation::Collections::IVector<::Windows::Media::Editing::MediaOverlay^>^ result = wrapper->_instance->Overlays;
        info.GetReturnValue().Set(NodeRT::Collections::VectorWrapper<::Windows::Media::Editing::MediaOverlay^>::CreateVectorWrapper(result, 
            [](::Windows::Media::Editing::MediaOverlay^ val) -> Local<Value> {
              return WrapMediaOverlay(val);
            },
            [](Local<Value> value) -> bool {
              return NodeRT::Utils::IsWinRtWrapperOf<::Windows::Media::Editing::MediaOverlay^>(value);
            },
            [](Local<Value> value) -> ::Windows::Media::Editing::MediaOverlay^ {
              return UnwrapMediaOverlay(value);
            }
          ));
        return;
      }
      catch (Platform::Exception ^exception)
      {
        NodeRT::Utils::ThrowWinRtExceptionInJs(exception);
        return;
      }
    }
    


  private:
    ::Windows::Media::Editing::MediaOverlayLayer^ _instance;
    static Persistent<FunctionTemplate> s_constructorTemplate;

    friend v8::Local<v8::Value> WrapMediaOverlayLayer(::Windows::Media::Editing::MediaOverlayLayer^ wintRtInstance);
    friend ::Windows::Media::Editing::MediaOverlayLayer^ UnwrapMediaOverlayLayer(Local<Value> value);
  };
  Persistent<FunctionTemplate> MediaOverlayLayer::s_constructorTemplate;

  v8::Local<v8::Value> WrapMediaOverlayLayer(::Windows::Media::Editing::MediaOverlayLayer^ winRtInstance)
  {
    EscapableHandleScope scope;

    if (winRtInstance == nullptr)
    {
      return scope.Escape(Undefined());
    }

    Local<Value> opaqueWrapper = CreateOpaqueWrapper(winRtInstance);
    Local<Value> args[] = {opaqueWrapper};
    Local<FunctionTemplate> localRef = Nan::New<FunctionTemplate>(MediaOverlayLayer::s_constructorTemplate);
    return scope.Escape(Nan::NewInstance(Nan::GetFunction(localRef).ToLocalChecked(),_countof(args), args).ToLocalChecked());
  }

  ::Windows::Media::Editing::MediaOverlayLayer^ UnwrapMediaOverlayLayer(Local<Value> value)
  {
     return MediaOverlayLayer::Unwrap<MediaOverlayLayer>(Nan::To<Object>(value).ToLocalChecked())->_instance;
  }

  void InitMediaOverlayLayer(Local<Object> exports)
  {
    MediaOverlayLayer::Init(exports);
  }

} } } } 

NAN_MODULE_INIT(init)
{
  // we ignore failures for now since it probably means that the initialization already happened for STA, and that's cool
  CoInitializeEx(nullptr, COINIT_MULTITHREADED);
  //if (FAILED(CoInitializeEx(nullptr, COINIT_MULTITHREADED)))
  /*{
    Nan::ThrowError(Nan::Error(NodeRT::Utils::NewString(L"error in CoInitializeEx()")));
    return;
  }*/
  
  NodeRT::Windows::Media::Editing::InitVideoFramePrecisionEnum(target);
  NodeRT::Windows::Media::Editing::InitMediaTrimmingPreferenceEnum(target);
  NodeRT::Windows::Media::Editing::InitMediaOverlay(target);
  NodeRT::Windows::Media::Editing::InitMediaClip(target);
  NodeRT::Windows::Media::Editing::InitEmbeddedAudioTrack(target);
  NodeRT::Windows::Media::Editing::InitBackgroundAudioTrack(target);
  NodeRT::Windows::Media::Editing::InitMediaComposition(target);
  NodeRT::Windows::Media::Editing::InitMediaOverlayLayer(target);

  NodeRT::Utils::RegisterNameSpace("Windows.Media.Editing", target);
}


NODE_MODULE(binding, init)