/// <summary>
/// This Update Loop is used to :
/// * Wait the Camera is really ready
/// * Bring back Callback to the main thread when using Background Thread
/// * To execute image Decoding When not using the background Thread
/// </summary>
public void Update()
{
// If not ready, wait
if (!Camera.IsReady())
{
Debug.Log(this + " Camera Not Ready Yet ...");
if (status != BarcodeScannerStatus.Initialize)
{
Status = BarcodeScannerStatus.Initialize;
}
return;
}
// If the app start for the first time (select size & onReady Event)
if (Status == BarcodeScannerStatus.Initialize)
{
if (WebcamInitialized())
{
Debug.Log(this + " Camera is Ready ");
Status = BarcodeScannerStatus.Paused;
if (OnReady != null)
{
OnReady.Invoke(this, EventArgs.Empty);
}
}
}
if (Status == BarcodeScannerStatus.Running)
{
// Call the callback if a result is there
if (Result != null)
{
//
//Log.Info(Result);
Callback(Result.Type, Result.Value);
// clean and return
Result = null;
parserPixelAvailable = false;
return;
}
// Get the image as an array of Color32
pixels = Camera.GetPixels(pixels);
parserPixelAvailable = true;
// If background thread OFF, do the decode main thread with 500ms of pause for UI
if (!Settings.ScannerBackgroundThread && mainThreadLastDecode < Time.realtimeSinceStartup - Settings.ScannerDecodeInterval)
{
DecodeQR();
mainThreadLastDecode = Time.realtimeSinceStartup;
}
}
}
public InitiateBarcodeScanner(ScannerSettings settings, IBarcodeParser parser, IWebcam webcam)
{
// Check Device Authorization
if (!Application.HasUserAuthorization(UserAuthorization.WebCam))
{
throw new Exception("This Webcam Library can't work without the webcam authorization");
}
Status = BarcodeScannerStatus.Initialize;
// Default Properties
Settings = (settings == null) ? new ScannerSettings() : settings;
Parser = (parser == null) ? new ZXingParser(Settings) : parser;
Camera = (webcam == null) ? new UnityWebcam(Settings) : webcam;
}
/// <summary>
/// Used to start Scanning
/// </summary>
/// <param name="callback"></param>
public void Scan(Action <string, string> callback)
{
if (Callback != null)
{
Debug.Log(this + " Already Scan");
return;
}
Callback = callback;
Debug.Log(this + " SimpleScanner -> Start Scan");
Status = BarcodeScannerStatus.Running;
#if !UNITY_WEBGL
if (Settings.ScannerBackgroundThread)
{
CodeScannerThread = new Thread(ThreadDecodeQR);
CodeScannerThread.Start();
}
#endif
}
/// <summary>
/// Used to Stop Scanning internaly (can be forced)
/// </summary>
private void Stop(bool forced)
{
if (!forced && Callback == null)
{
//Log.Warning(this + " No Scan running");
return;
}
// Stop thread / Clean callback
Debug.Log(this + " SimpleScanner -> Stop Scan");
// #if !UNITY_WEBGL
// if (CodeScannerThread != null)
// {
// CodeScannerThread.Abort();
// }
// #endif
Callback = null;
Status = BarcodeScannerStatus.Paused;
}
