void Png::PngEncodeAsync(const FunctionCallbackInfo<Value> &args)
{
Isolate *isolate = Isolate::GetCurrent();
HandleScope scope(isolate);
if (args.Length() != 1) {
args.GetReturnValue().Set(VException("One argument required - callback function."));
return;
}
if (!args[0]->IsFunction()) {
args.GetReturnValue().Set(VException("First argument must be a function."));
return;
}
Local<Function> callback = Local<Function>::Cast(args[0]);
Png *png = ObjectWrap::Unwrap<Png>(args.This());
encode_request *enc_req = (encode_request *)malloc(sizeof(*enc_req));
if (!enc_req) {
args.GetReturnValue().Set(VException("malloc in Png::PngEncodeAsync failed."));
return;
}
enc_req->callback.Reset(isolate, callback);
enc_req->png_obj = png;
enc_req->png = NULL;
enc_req->png_len = 0;
enc_req->error = NULL;
// We need to pull out the buffer data before
// we go to the thread pool.
Local<Value> buf_val = png->handle()->GetHiddenValue(String::NewFromUtf8(isolate, "buffer"));
enc_req->buf_data = Buffer::Data(buf_val->ToObject());
uv_work_t* req = new uv_work_t;
req->data = enc_req;
uv_queue_work(uv_default_loop(), req, UV_PngEncode, (uv_after_work_cb)UV_PngEncodeAfter);
png->Ref();
}
Handle<Value>
Png::PngEncodeAsync(const Arguments &args)
{
HandleScope scope;
if (args.Length() != 1)
return VException("One argument required - callback function.");
if (!args[0]->IsFunction())
return VException("First argument must be a function.");
Local<Function> callback = Local<Function>::Cast(args[0]);
Png *png = ObjectWrap::Unwrap<Png>(args.This());
encode_request *enc_req = (encode_request *)malloc(sizeof(*enc_req));
if (!enc_req)
return VException("malloc in Png::PngEncodeAsync failed.");
enc_req->callback = Persistent<Function>::New(callback);
enc_req->png_obj = png;
enc_req->png = NULL;
enc_req->png_len = 0;
enc_req->error = NULL;
// We need to pull out the buffer data before
// we go to the thread pool.
Local<Value> buf_val = png->handle_->GetHiddenValue(String::New("buffer"));
enc_req->buf_data = BufferData(buf_val->ToObject());
uv_work_t* req = new uv_work_t;
req->data = enc_req;
uv_queue_work(uv_default_loop(), req, UV_PngEncode, (uv_after_work_cb)UV_PngEncodeAfter);
png->Ref();
return Undefined();
}