private Task <bool> Prepare(byte[] m_RegMin)
{
return(Task.Run <bool>(() =>
{
var fp_image = new Byte[m_ImageWidth * m_ImageHeight];
var iError = m_FPM.GetImage(fp_image);
iError = m_FPM.GetImageEx(fp_image, timeout: 10000, dispWnd: 0, quality: 50);
if (iError == (Int32)SGFPMError.ERROR_NONE)
{
iError = m_FPM.CreateTemplate(fp_image, m_RegMin);
if (iError == (Int32)SGFPMError.ERROR_NONE)
{
return true;
}
}
return false;
}));
}
private void deviceThread()
{
STATE state = STATE.IDLE;
COMMAND com = COMMAND.NONE;
List <FingerTemplate> templates = new List <FingerTemplate>();
byte[] image = null;
Int32 iError = 1;
int enrollCount = 0;
int quality = 50;
iError = m_FPM.Init(devName);
iError = m_FPM.OpenDevice(devId);
GetInfo();
try
{
while (true)
{
cancelToken.Token.ThrowIfCancellationRequested();
if (state == STATE.IDLE)
{
com = queue.Take(cancelToken.Token);
}
else
{
// non blocking take
if (queue.Count > 0)
{
com = queue.Take();
}
}
switch (com)
{
case COMMAND.LIVECAPTURE_START:
state = STATE.TEST;
break;
case COMMAND.ENROLLMENT_START:
state = STATE.GETFINGER;
enrollCount = 0;
templates.Clear();
break;
case COMMAND.SINGLECAPTURE_START:
state = STATE.GETSINGLE;
break;
case COMMAND.SINGLECAPTURE_STOP:
case COMMAND.LIVECAPTURE_STOP:
case COMMAND.ENROLLMENT_STOP:
state = STATE.IDLE;
break;
}
com = COMMAND.NONE;
switch (state)
{
case STATE.TEST:
SendBaseMessage("Please, touch the scanner");
// iError = m_FPM.SetLedOn(false);
image = new Byte[m_ImageWidth * m_ImageHeight];
try
{
iError = m_FPM.GetImageEx(image, TIMEOUT_CAPTURE, 0, ENROLL_QUALITY);
}
catch (Exception ex)
{
}
if (iError == (Int32)SGFPMError.ERROR_NONE)
{
OnBiometricsCaptured(new FingerImageSG(_BSPCode, image, m_ImageWidth, m_ImageHeight));
}
else if (iError == (Int32)SGFPMError.ERROR_TIME_OUT)
{
OnBiometricsCaptured(null);
Thread.Sleep(TIMEOUT_AFTER_CAPTURE);
}
else if ((iError != (Int32)SGFPMError.ERROR_INVALID_PARAM) && (iError != (Int32)SGFPMError.ERROR_LINE_DROPPED))
{
state = STATE.OFFLINE;
Ambassador.AddMessage(new MSignal(this, MSignal.SIGNAL.DEVICE_FAILURE));
}
break;
case STATE.GETSINGLE:
SendBaseMessage("Please, touch the scanner");
image = new Byte[m_ImageWidth * m_ImageHeight];
state = STATE.GETSINGLEIMAGE;
break;
case STATE.GETSINGLEIMAGE:
// iError = m_FPM.SetLedOn(false);
image = new Byte[m_ImageWidth * m_ImageHeight];
iError = m_FPM.GetImageEx(image,TIMEOUT_CAPTURE,0,ENROLL_QUALITY);
if (iError == 0)
{
OnSingleCaptured(new FingerImageSG(_BSPCode,image,m_ImageWidth,m_ImageHeight));
image = new Byte[m_ImageWidth * m_ImageHeight];
state = STATE.SINGLELIFT;
}
else if (iError == (Int32)SGFPMError.ERROR_TIME_OUT)
{
Thread.Sleep(TIMEOUT_AFTER_CAPTURE);
}
else if ((iError != (Int32)SGFPMError.ERROR_INVALID_PARAM) && (iError != (Int32)SGFPMError.ERROR_LINE_DROPPED))
{
state = STATE.OFFLINE;
Ambassador.AddMessage(new MSignal(this,MSignal.SIGNAL.DEVICE_FAILURE));
}
break;
case STATE.SINGLELIFT:
// iError = m_FPM.SetLedOn(false);
iError = m_FPM.GetImageEx(image,10,0,ENROLL_QUALITY);
if (iError != 0)
{
state = STATE.GETSINGLE;
}
else
{
Thread.Sleep(TIMEOUT_AFTER_CAPTURE);
}
break;
case STATE.GETFINGER:
SendBaseMessage("Please, touch the scanner");
image = new Byte[m_ImageWidth * m_ImageHeight];
state = STATE.GETIMAGE;
break;
case STATE.GETIMAGE:
// iError = m_FPM.SetLedOn(false);
iError = m_FPM.GetImageEx(image,10,0,ENROLL_QUALITY);
if (iError == 0)
{
enrollCount++;
FingerImageSG fingerImage = new FingerImageSG(_BSPCode,image,m_ImageWidth,m_ImageHeight);
TemplateSG tmpl = Extract(fingerImage) as TemplateSG;
templates.Add(tmpl);
OnBiometricsCaptured(fingerImage);
OnSendProgressMessage((enrollCount) * 33);
if (enrollCount < 3)
{
state = STATE.GETEMPTY;
}
else
{
state = STATE.FINISHENROLL;
}
}
else if (iError == (Int32)SGFPMError.ERROR_TIME_OUT)
{
Thread.Sleep(TIMEOUT_AFTER_CAPTURE);
}
else if ((iError != (Int32)SGFPMError.ERROR_INVALID_PARAM) && (iError != (Int32)SGFPMError.ERROR_LINE_DROPPED))
{
state = STATE.OFFLINE;
Ambassador.AddMessage(new MSignal(this,MSignal.SIGNAL.DEVICE_FAILURE));
}
break;
case STATE.GETEMPTY:
SendBaseMessage("Please, lift your finger up");
image = new Byte[m_ImageWidth * m_ImageHeight];
state = STATE.GETEMPTYIMAGE;
break;
case STATE.GETEMPTYIMAGE:
// iError = m_FPM.SetLedOn(false);
iError = m_FPM.GetImageEx(image,10,0,ENROLL_QUALITY);
if (iError != 0)
{
state = STATE.GETFINGER;
}
else
{
Thread.Sleep(TIMEOUT_AFTER_CAPTURE);
}
break;
case STATE.FINISHENROLL:
state = STATE.IDLE;
foreach (var template in templates)
{
bool matched = false;
m_FPM.MatchTemplate((template as TemplateSG).Bytes,(templates[templates.Count - 1] as TemplateSG).Bytes,SGFPMSecurityLevel.NORMAL,ref matched);
if (!matched)
{
SendPopUpMessage("Can't create template, please repeat");
OnBiometricsEnrolled(null);
OnSendProgressMessage(0);
}
OnSendProgressMessage(100);
}
SendPopUpMessage("Successfully registered");
OnBiometricsEnrolled(templates.ToList()); // return new copy of list
break;
default:
break;
}
}
}
catch (Exception ex)
{
log.Error(ex.Message);
m_FPM.CloseDevice();
}
}