private static extern WinBioErrorCode Verify(
WinBioSessionHandle sessionHandle,
IntPtr identity,
WinBioBiometricSubType subFactor,
out int unitId,
out bool match,
out WinBioRejectDetail rejectDetail);
private extern static WinBioErrorCode CaptureSample(
WinBioSessionHandle sessionHandle,
WinBioBirPurpose purpose,
WinBioBirDataFlags flags,
out int unitId,
out IntPtr sample,
out int sampleSize,
out WinBioRejectDetail rejectDetail);
public static int CaptureSample(
WinBioSessionHandle sessionHandle,
WinBioBirPurpose purpose,
WinBioBirDataFlags flags,
out int sampleSize,
out WinBioRejectDetail rejectDetail)
{
int unitId;
IntPtr pointer;
var code = CaptureSample(sessionHandle, purpose, flags, out unitId, out pointer, out sampleSize, out rejectDetail);
WinBioException.ThrowOnError(code, "WinBioCaptureSample failed");
//TODO: parse WINBIO_BIR structure at pointer
Free(pointer);
return(unitId);
}
public static int CaptureSample(
WinBioSessionHandle sessionHandle,
WinBioBirPurpose purpose,
WinBioBirDataFlags flags,
out WinBioRejectDetail rejectDetail,
out Bitmap fingerprintImage)
{
int unitId;
int sampleSize;
IntPtr samplePointer;
var code = CaptureSample(sessionHandle, purpose, flags, out unitId, out samplePointer, out sampleSize, out rejectDetail);
WinBioException.ThrowOnError(code, "WinBioCaptureSample failed");
WinBioBir sample = (WinBioBir)Marshal.PtrToStructure(samplePointer, typeof(WinBioBir));
if (sample.StandardDataBlock.Size == 0)
{
throw new WinBioException("Your fingerprint sensor doesn't support StandardDataBlock");
}
IntPtr birHeaderPointer = samplePointer + sample.HeaderBlock.Offset;
IntPtr ansiHeaderPointer = samplePointer + sample.StandardDataBlock.Offset;
IntPtr ansiRecordPointer = ansiHeaderPointer + Marshal.SizeOf(typeof(WinBioBdbAnsi381Header));
WinBioBdbAnsi381Record ansiRecord = (WinBioBdbAnsi381Record)Marshal.PtrToStructure(
ansiRecordPointer, typeof(WinBioBdbAnsi381Record));
Size imageSize = new Size(ansiRecord.HorizontalLineLength, ansiRecord.VerticalLineLength);
IntPtr firstPixelPointer = ansiRecordPointer + Marshal.SizeOf(typeof(WinBioBdbAnsi381Record));
fingerprintImage = new Bitmap(imageSize.Width, imageSize.Height, 1 * imageSize.Width, PixelFormat.Format8bppIndexed, firstPixelPointer);
ColorPalette palette = fingerprintImage.Palette;
for (int i = 0; i <= 255; i++)
{
palette.Entries[i] = Color.FromArgb(i, i, i);
}
fingerprintImage.Palette = palette;
Free(samplePointer);
return(unitId);
}
public static bool Verify(
WinBioSessionHandle sessionHandle,
WinBioIdentity identity,
WinBioBiometricSubType subFactor,
out int unitId,
out WinBioRejectDetail rejectDetail)
{
bool match;
var handle = GCHandle.Alloc(identity.GetBytes(), GCHandleType.Pinned);
try
{
var code = Verify(sessionHandle, handle.AddrOfPinnedObject(), subFactor, out unitId, out match, out rejectDetail);
WinBioException.ThrowOnError(code, "WinBioVerify failed");
}
finally
{
handle.Free();
}
return(match);
}
public static int Identify(
WinBioSessionHandle sessionHandle,
out WinBioIdentity identity,
out WinBioBiometricSubType subFactor,
out WinBioRejectDetail rejectDetail)
{
int unitId;
var bytes = new byte[WinBioIdentity.Size];
var handle = GCHandle.Alloc(bytes, GCHandleType.Pinned);
try
{
var code = Identify(sessionHandle, out unitId, handle.AddrOfPinnedObject(), out subFactor, out rejectDetail);
WinBioException.ThrowOnError(code, "WinBioIdentify failed");
}
finally
{
handle.Free();
}
identity = new WinBioIdentity(bytes);
return(unitId);
}
public AuthenticationFailedEventArgs(WinBioError error, WinBioRejectDetail rejectDetail)
{
Error = error;
RejectDetail = rejectDetail;
}
public extern static WinBioErrorCode EnrollCapture(WinBioSessionHandle sessionHandle, out WinBioRejectDetail rejectDetail);
private extern static WinBioErrorCode Identify(
WinBioSessionHandle sessionHandle,
out int unitId,
IntPtr identity,
out WinBioBiometricSubType subFactor,
out WinBioRejectDetail rejectDetail);
public AuthenticationFailedEventArgs(WinBioError error, WinBioRejectDetail rejectDetail)
{
Error = error;
RejectDetail = rejectDetail;
}
