Subject: Support for ZIP compression in the TiffCodec?

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Subject: Support for ZIP compression in the TiffCodec?

Subject: Support for ZIP compression in the TiffCodec?

2007-10-11 - By Thimo Seitz

Back
Hi.

I've just startet using the iText-Library for PDF-Generation and noticed that
Zip Compression inside Tif-Images isn't supported.
ImageMagick and Photoshop CS2 stores this with compression-type 8, which
results in a Exception by using Image.getInstance().
-- ---- ---- --
Exception in thread "main" java.lang.IllegalArgumentException: The compression
8 is not supported.
at com.lowagie.text.pdf.codec.TiffImage.getTiffImageColor(TiffImage.java:298)
at com.lowagie.text.pdf.codec.TiffImage.getTiffImage(TiffImage.java:133)
at com.lowagie.text.pdf.codec.TiffImage.getTiffImage(TiffImage.java:107)
at com.lowagie.text.Image.getInstance(Image.java:428)
at com.lowagie.text.Image.getInstance(Image.java:773)
at ImageTest.main(ImageTest.java:17)
-- ---- ---- --
But i have seen that inflate-compression is already supported by iText, so I
used these function also for zip.
I added a patchfile using the code from the trunk. Maybe it is useful for the
official trunk.
The patch adds a compression-constant into TIFFConstants.java and duplicates
the way used by TIFFConstants.COMPRESSION_DEFLATE for
the new Zip-Key.

Best Regards
Thimo Seitz

-- ---- ---- ---- ---- ---- ---- ---- ------
Dipl.-Inf. (FH) Thimo Seitz
Gesch?ftsf?hrer Entwicklung
Flyer-Ex Software GmbH
Am Weichselgarten 7
91058 Erlangen/Tennenlohe
Tel. 09131 / 691-189

thimo.seitz@(protected)
http://www.flyer-ex.de
-- ---- ---- ---- ---- ---- ---- ---- ------

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