public int Close()
{
if (isOpened)
{
this.captureCompletedHandler = null;
this.captureFingerHandler = null;
this.isOpened = false;
if (this.threadCaptureFinger != null)
{
this.threadCaptureFinger.Abort();
}
for (int i = 0; i < channels; i++)
{
IDFprCapDll.LIVESCAN_EndCapture(i);
}
return(IDFprCapDll.LIVESCAN_Close());
}
return(1);
}
public int Open(CaptureFingerHandler captureFingerHandler, CaptureCompletedHandler captureCompletedHandler)
{
if (isOpened)
{
return(1);
}
try
{
int result = IDFprCapDll.LIVESCAN_Init();
if (result != 1)
{
throw new Exception(string.Format("The device is error.error code:{0}", result));
}
int nChannelCount = IDFprCapDll.LIVESCAN_GetChannelCount();
if (nChannelCount <= 0)
{
throw new Exception("The device channel is not find.");
}
channelSizeDict.Clear();
for (int i = 0; i < nChannelCount; i++)
{
result = IDFprCapDll.LIVESCAN_SetContrast(i, 127);
int x = 256, y = 360;
result = IDFprCapDll.LIVESCAN_GetMaxImageSize(i, ref x, ref y);
channelSizeDict.Add(i, x * y);
}
channels = nChannelCount;
if (result == 1)
{
isOpened = true;
}
this.captureCompletedHandler = captureCompletedHandler;
this.captureFingerHandler = captureFingerHandler;
return(result);
}
catch (Exception excetion) { throw new Exception(excetion.Message); }
}
public int Capture(byte fingerPosCode, int channel = 0, int operTimeout = 30000)
{
if (channel + 1 > channels)
{
throw new Exception("Not find target device.");
}
if (!isOpened)
{
throw new Exception("Please open device first.");
}
threadCaptureFinger = new Thread((object arg) =>
{
byte[] imageBuffer = null;
int quality = 0;
byte[] featureBuffer = null;
int tempTimeout = (int)arg;
while (tempTimeout >= 0 && isOpened)
{
byte[] pRawData = null;
byte[] pBmpData = null;
int result = 0;
pRawData = new byte[channelSizeDict[channel]];
pBmpData = new byte[channelSizeDict[channel] + 1078];
IDFprCapDll.LIVESCAN_BeginCapture(channel);
result = IDFprCapDll.LIVESCAN_GetFPBmpData(channel, pBmpData);
result = IDFprCapDll.LIVESCAN_GetFPRawData(channel, pRawData);
if (result == 1)
{
result = feature.Quality(pRawData);
if (result > 0)
{
quality = result;
featureBuffer = new byte[512];
result = feature.Extract(fingerPosCode, pRawData, featureBuffer);
}
else
{
SimpleConsole.WriteLine(new Exception(string.Format("get finger quality failed, error code:{0}", result)));
}
imageBuffer = pBmpData;
}
else
{
SimpleConsole.WriteLine(new Exception(string.Format("get finger bmp or fpr failed, error code:{0}", result)));
}
IDFprCapDll.LIVESCAN_EndCapture(channel);
if (pBmpData != null && captureFingerHandler != null)
{
captureFingerHandler.Invoke(pBmpData);
}
if (this.captureCompletedHandler != null)
{
this.captureCompletedHandler.Invoke(imageBuffer, featureBuffer, quality, 0);
}
pRawData = null;
pBmpData = null;
GC.Collect();//force
}
});
threadCaptureFinger.Start(operTimeout);
return(1);
}
