Whisper constructor
      
      Whisper(
    
    
- dynamic model,
 - whisper_context_params cparams, {
 - String outputMode = "plaintext",
 - String initMode = "late",
 - ValueNotifier<
String> ? externalNotifier, 
Implementation
Whisper(this.model, this.cparams,
    {this.outputMode = "plaintext",
    this.initMode = "late",
    ValueNotifier<String>? externalNotifier}) {
  if (!WhisperLibrary.loaded) {
    if (!WhisperLibrary.flagFirst) {
      WhisperLibrary.init();
    } else {
      throw Exception('libwhisper is not loaded!');
    }
  }
  if (externalNotifier != null) {
    result = externalNotifier;
  }
  if (initMode == "normal") {
    initModel();
  }
}