public Span <byte> ConvertFmdFormat(ReadOnlySpan <byte> fmd, FmdFormat sourceFormat, FmdFormat destFormat)
{
if (!ValidateFMD(fmd, sourceFormat))
{
throw new ArgumentException("This fmd is invalid");
}
var nativeCall = NativeApi.ConvertFMD(sourceFormat, fmd, destFormat);
if (nativeCall.Code != 0)
{
var message = nativeCall.Code switch
{
InvalidParameter => "Invalid Parameter",
Failure => "Unable to Process this fmd",
_ => "Engine Error"
};
throw new FingerMatchException(nativeCall.Code, message);
}
return(nativeCall.Value);
}
public List <int> IdentifyFmd(ReadOnlySpan <byte> fmd1, ReadOnlySpan <byte[]> fmds, uint maxToReturn = 10, uint threshold = 21474, FmdFormat format = FmdFormat.Iso)
{
var fmdsArray = fmds.ToArray();
var nativeCall = NativeApi.Indentify(fmd1, format, ref fmdsArray, threshold, maxToReturn);
if (nativeCall.Code != 0)
{
var message = nativeCall.Code switch
{
InvalidParameter => "Invalid Parameter",
Failure => "Unable to Compare Fmds",
_ => "Engine Error"
};
throw new FingerMatchException(nativeCall.Code, message);
}
if (nativeCall.Value.Count < 1)
{
return(new List <int>());
}
return(nativeCall.Value);
}
}
public int CompareTwoFmds(ReadOnlySpan <byte> fmd1, ReadOnlySpan <byte> fmd2, FmdFormat fmdFormat1 = FmdFormat.Iso, FmdFormat fmdFormat2 = FmdFormat.Iso)
{
if (!ValidateFMD(fmd1, fmdFormat1) || !ValidateFMD(fmd2, fmdFormat2))
{
throw new ArgumentException("Invalid fmds");
}
var nativeCall = NativeApi.CompareTwoFmd(fmd1, fmdFormat1, fmd2, fmdFormat2);
if (nativeCall.Code != 0)
{
var message = nativeCall.Code switch
{
InvalidParameter => "Invalid Parameter",
Failure => "Unable to Compare Fmds",
_ => "Engine Error"
};
throw new FingerMatchException(nativeCall.Code, message);
}
return(nativeCall.Value);
}
public bool ValidateFMD(ReadOnlySpan <byte> fmd, FmdFormat format = FmdFormat.Iso)
{
var nativeCall = NativeApi.ValidateFMD(fmd, format);
return(nativeCall.Value.view_cnt > 0);
}
