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Date Posted: 06:47:07 05/11/04 Tue
Author: Michel
Subject: Re: rowsperstrip
In reply to: Peter Rettig 's message, "Re: rowsperstrip" on 15:18:48 05/06/04 Thu


Hi Peter,

Sorry, there is probably not much I can do about this. It must be the libtiff library that uses a maximum of 7f ff ff ff.

Best regards,

Michel

>Hi Michel,
>
>I have tried this but the result is not OK.
>The highest value for RowsPerStrip is 7F FF FF FF.
>If I tried to set a higher value the tag was not
>written!
>
>Best regards,
>
>Peter
>
>>
>>Hi Peter,
>>
>>I thought MaxLongInt would be enough as a maximum. Try
>>removing the call to BoundInteger and make the
>>parameter a DWord in SetRowsPerStrip. Let me know how
>>it goes, if it works I will change the code base.
>>
>>Best regards,
>>
>>Michel
>>
>>>Hi,
>>>
>>>normally there is no need to set a specific value for
>>>the tag RowsPerStrip!
>>>Unfortunately german National Health Insurances use
>>>the TIF G4 format for dataexchange of prescriptions
>>>and there is a new regulation to use only FF FF FF FF
>>>for this value :-(
>>>
>>>Peter
>>>
>>>>Hi,
>>>>I really need to learn rowsperstrip means of TIF G4
>>>>files. Why do you set a value? How to decide the
>>>value?
>>>>
>>>>I have some problems.
>>>>
>>>>>Hi Michel,
>>>>>
>>>>>yes that is OK.
>>>>>But for some reasons I have to create TIF's with FF
>>>FF
>>>>>FF FF as value for RowsPerStrip. With MaxInt there
>>is
>>>>>only 7F FF FF FF. Is there any way to create
>>>something
>>>>>like this?
>>>>>
>>>>>Best Regards,
>>>>>
>>>>>Peter Rettig
>>>>>
>>>>>>
>>>>>>Hi Peter,
>>>>>>
>>>>>>MaxLongInt is 2147483647. Try with that value or
>>>>>>smaller for RowsPerStrip. You do not need to
>>>>recompile
>>>>>>the package as it is only used at design time.
>Just
>>>>>>change the .Pas file.
>>>>>>
>>>>>>Best regards,
>>>>>>
>>>>>>Michel
>>>>>>
>>>>>>>Hi Michel,
>>>>>>>
>>>>>>>I have changed the file entifgr.pas like
>>described,
>>>>>>>compiled. I have changed the files EnTifGr.dcu,
>>>>>>>En_D4.dcu, En_D4.dcp, En_D4.bpl. But the result
>is
>>>>>the
>>>>>>>same.
>>>>>>>
>>>>>>>procedure TForm1.Button1Click(Sender: TObject);
>>>>>>>var
>>>>>>> DestGraphic : TTiffGraphic;
>>>>>>> i, j: longint;
>>>>>>>begin
>>>>>>> j :=
>>>>>>>ImageScrollBox1.ImageCountFromFile(FilenameEdit1.
>F
>>i
>>>l
>>>>e
>>>>>N
>>>>>>a
>>>>>>>me);
>>>>>>>
>>>>>ImageScrollBox1.LoadFromFile(FilenameEdit1.FileName
>,
>>>>>>>0);
>>>>>>> DestGraphic := TTiffGraphic.Create;
>>>>>>> DestGraphic.Compression := tcGroup4;
>>>>>>> DestGraphic.Assign(ImageScrollBox1.Graphic);
>>>>>>> DestGraphic.RowsPerStrip := 4294967295;
>>>>>>> DestGraphic.SaveToFile(FilenameEdit1.FileName +
>>>>>>>'.TIF');
>>>>>>> for i := 2 to j do begin
>>>>>>>
>>>>>>>ImageScrollBox1.AppendToFile(FilenameEdit1.FileNa
>m
>>e
>>>>+
>>>>>>>'_neu.TIF');
>>>>>>> end;
>>>>>>>end;
>>>>>>>
>>>>>>>Can you advice?
>>>>>>>
>>>>>>>Best regards,
>>>>>>>
>>>>>>>Peter
>>>>>>>
>>>>>>>>
>>>>>>>>Hi Peter,
>>>>>>>>
>>>>>>>>This has been corrected in the latest code base.
>>>It
>>>>>>is
>>>>>>>>now limited to MaxLongInt, about 2Gig. The code
>>is
>>>>>>>now,
>>>>>>>>
>>>>>>>>procedure TTiffGraphic.SetRowsPerStrip( const
>>>>>>>>InRowsPerStrip : LongInt );
>>>>>>>>begin
>>>>>>>> FRowsPerStrip :=
>BoundInteger(InRowsPerStrip,
>>>>1,
>>>>>>>>MaxLongInt);
>>>>>>>>end;
>>>>>>>>
>>>>>>>>Let me know if you have problems. This change
>>will
>>>>>be
>>>>>>>>in the next version.
>>>>>>>>
>>>>>>>>Best regards,
>>>>>>>>
>>>>>>>>Michel
>>>>>>>>
>>>>>>>>
>>>>>>>>>Hi,
>>>>>>>>>
>>>>>>>>>I tried to save a TIF-image with 4 294 967 295
>>>(FF
>>>>>>FF
>>>>>>>>>FF FF) rowsperstrip. But the highest accepted
>>>>value
>>>>>>>at
>>>>>>>>>this property semms to be 4095!?
>>>>>>>>>Is there a way to support larger values?
>>>>>>>>>
>>>>>>>>>Best regards,
>>>>>>>>>
>>>>>>>>>Peter

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