javascript - Pass Bytes to NodeJS Addon -

i want create stream wav file, , pass nodejs addon:

var readablestream = fs.createreadstream('random_file.wav'); readablestream.on('data', function(chunk) {         var chunck_to_binary = chunk.tostring('what??'); //binary??         var obj1 = addon.store(chunck_to_binary);         console.log('chunck');         console.log(obj1.caract_count);         //console.log(typeof data);     }); 

then, when file has been passed. want to devolve bytes nodejs, shure process correct. , create copy:

readablestream.on('end', function() {     console.log("loaded");      var data_copy = addon.return_bytes();      fs.writefile('copy.wav', data_copy, function (err) {         if (err) return console.log(err);         console.log('done!!');     });  }); 

in addon implement this:

void store_values(const functioncallbackinfo<v8::value>& args) { isolate* isolate = isolate::getcurrent(); handlescope scope(isolate);  if (args.length() < 1) {     isolate->throwexception(exception::typeerror(         string::newfromutf8(isolate, "wrong number of arguments")));     return; }  v8::string::utf8value param1(args[0]->tostring()); std::string aux= std::string(*param1); //js---->c++  //file_in_memory global file_in_memory = file_in_memory + aux; //(..) return byte size of file_in_memory  } 

so far have not succeed. possible wrong? think problem how passing information addon. suggestion?

chunk buffer, because it's chunk of bytes. pass add-on as-is:

var obj1 = addon.store(chunk); 

in add-on, can convert std::string so:

std::string aux(node::buffer::data(args[0]), node::buffer::length(args[0]));