[jira] [Commented] (FOP-2435) AFP CMYK TIFF image data converted to AFP IOCA TIFF LZW compression algorithm

["Jerome O'Flaherty (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FOP-2435?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15904854#comment-15904854 ] 

Jerome O'Flaherty commented on FOP-2435:
----------------------------------------

Guys,
  Sorry for dragging up this old ticket but I am interested in understanding TIFF LZW in IOCA, I cannot find information about the way the TIFF in actually encoded within IOCA. I can decode the ImageBandData and the Tiles but the raw Bytes do not seem to match the actually TIFF LZW decoder format? Can anyone point me in the direction of a format specification and/or some sample code to decoder/encoder for IOCA Images with TIFF LZW compression?

Thanks

Jerome

> AFP CMYK TIFF image data converted to AFP IOCA TIFF LZW compression algorithm
> -----------------------------------------------------------------------------
>
>                 Key: FOP-2435
>                 URL: https://issues.apache.org/jira/browse/FOP-2435
>             Project: FOP
>          Issue Type: New Feature
>            Reporter: christian.pestel
>         Attachments: Image_TIFF_CMYK_32bits_LZW.tif, S1LOGEDR.afp
>
>
> If the CMYK TIFFs image file is compressed (LZW), Fop decompress the data during image loading and convert datas in AFP IOCA resource with these IFD parameters
> - Image Encoding Parameter: Compression algorithm: No Compression
> - Image Encoding Parameter: Recording algorithm: RIDIC
>  
> Is it possible to compress AFP data image ?
> and set IFD parameters to
> - Image Encoding Parameter: Compression algorithm: TIFF LZW
> - Image Encoding Parameter: Recording algorithm: RIDIC



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