decodebuffer.c

void DecodeBufferAsync(const FunctionCallbackInfo<Value>&amp; args) {
    if (!createDBR()) {return;}
    Isolate* isolate = Isolate::GetCurrent();
    Local<Context> context = isolate->GetCurrentContext();
 
    // get arguments
    unsigned char* buffer = (unsigned char*) node::Buffer::Data(args[0]); // file stream
    int width = args[1]->Int32Value(context).ToChecked();   // image width
    int height = args[2]->Int32Value(context).ToChecked();  // image height
    int stride = args[3]->Int32Value(context).ToChecked(); // stride
    int iFormat = args[4]->Int32Value(context).ToChecked(); // barcode types
    Local<Function> cb = Local<Function>::Cast(args[5]); // javascript callback function
    String::Utf8Value templateName(isolate, args[6]); // template name
    char *pTemplateName = *templateName;
 
    // initialize BarcodeWorker
    BarcodeWorker *worker = new BarcodeWorker;
    worker->request.data = worker;
    worker->callback.Reset(isolate, cb);
    worker->iFormat = iFormat;
    worker->pResults = NULL;
    worker->buffer = buffer;
    worker->width = width;
    worker->height = height;
    worker->bufferType = RGB_BUFFER;
    worker->stride = stride;
     
    if (hasTemplate(pTemplateName)) {
        // Load the template.
        char szErrorMsg[256];
        DBR_InitRuntimeSettingsWithString(hBarcode, pTemplateName, CM_OVERWRITE, szErrorMsg, 256);
        worker->useTemplate = true;
    }
    else {
        worker->useTemplate = false;
    }
 
    uv_queue_work(uv_default_loop(), &amp;worker->request, (uv_work_cb)DetectionWorking, (uv_after_work_cb)DetectionDone);
}