public void StartScanning(Action <Result> scanResultCallback, MobileBarcodeScanningOptions options = null)
{
this.callback = scanResultCallback;
this.options = options ?? MobileBarcodeScanningOptions.Default;
lastPreviewAnalysis = DateTime.UtcNow.AddMilliseconds(options.InitialDelayBeforeAnalyzingFrames);
isAnalyzing = true;
Console.WriteLine("StartScanning");
CheckPermissions();
var perf = PerformanceCounter.Start();
GetExclusiveAccess();
try
{
var version = Build.VERSION.SdkInt;
if (version >= BuildVersionCodes.Gingerbread)
{
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Checking Number of cameras...");
var numCameras = Android.Hardware.Camera.NumberOfCameras;
var camInfo = new Android.Hardware.Camera.CameraInfo();
var found = false;
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Found " + numCameras + " cameras...");
var whichCamera = CameraFacing.Back;
if (options.UseFrontCameraIfAvailable.HasValue && options.UseFrontCameraIfAvailable.Value)
{
whichCamera = CameraFacing.Front;
}
for (int i = 0; i < numCameras; i++)
{
Android.Hardware.Camera.GetCameraInfo(i, camInfo);
if (camInfo.Facing == whichCamera)
{
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Found " + whichCamera + " Camera, opening...");
camera = Android.Hardware.Camera.Open(i);
cameraId = i;
found = true;
break;
}
}
if (!found)
{
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Finding " + whichCamera + " camera failed, opening camera 0...");
camera = Android.Hardware.Camera.Open(0);
cameraId = 0;
}
}
else
{
camera = Android.Hardware.Camera.Open();
}
if (camera == null)
{
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Camera is null :(");
}
camera.SetPreviewCallback(this);
} catch (Exception ex) {
ShutdownCamera();
Console.WriteLine("Setup Error: " + ex);
}
PerformanceCounter.Stop(perf, "SurfaceCreated took {0}ms");
}
public void StartScanning (Action<Result> scanResultCallback, MobileBarcodeScanningOptions options = null)
{
this.callback = scanResultCallback;
this.options = options ?? MobileBarcodeScanningOptions.Default;
lastPreviewAnalysis = DateTime.UtcNow.AddMilliseconds(options.InitialDelayBeforeAnalyzingFrames);
isAnalyzing = true;
Console.WriteLine ("StartScanning");
CheckPermissions ();
var perf = PerformanceCounter.Start ();
GetExclusiveAccess();
try
{
var version = Build.VERSION.SdkInt;
if (version >= BuildVersionCodes.Gingerbread)
{
Android.Util.Log.Debug (MobileBarcodeScanner.TAG, "Checking Number of cameras...");
var numCameras = Android.Hardware.Camera.NumberOfCameras;
var camInfo = new Android.Hardware.Camera.CameraInfo();
var found = false;
Android.Util.Log.Debug (MobileBarcodeScanner.TAG, "Found " + numCameras + " cameras...");
var whichCamera = CameraFacing.Back;
if (options.UseFrontCameraIfAvailable.HasValue && options.UseFrontCameraIfAvailable.Value)
whichCamera = CameraFacing.Front;
for (int i = 0; i < numCameras; i++)
{
Android.Hardware.Camera.GetCameraInfo(i, camInfo);
if (camInfo.Facing == whichCamera)
{
Android.Util.Log.Debug (MobileBarcodeScanner.TAG, "Found " + whichCamera + " Camera, opening...");
camera = Android.Hardware.Camera.Open(i);
cameraId = i;
found = true;
break;
}
}
if (!found)
{
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Finding " + whichCamera + " camera failed, opening camera 0...");
camera = Android.Hardware.Camera.Open(0);
cameraId = 0;
}
}
else
{
camera = Android.Hardware.Camera.Open();
}
if (camera == null)
Android.Util.Log.Debug(MobileBarcodeScanner.TAG, "Camera is null :(");
camera.SetPreviewCallback (this);
} catch (Exception ex) {
ShutdownCamera ();
Console.WriteLine("Setup Error: " + ex);
}
PerformanceCounter.Stop (perf, "SurfaceCreated took {0}ms");
}
