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TIFF and LibTiff Mail List Archive

1994.10.17 17:37 "Bug in tiff2ps?", by Alberto Accomazzi

I'm having trouble trying to create PostScript level 2 files from TIFF G4 files created with the latest TIFF library (3.3beta020). The evidence seems to suggest that something wrong happens when the input TIFF file has more than 1 row per strip. Here is some more info (apologies if this looks confusing):

alberto/cfa0-175: tiffinfo tmp.g4

TIFF Directory at offset 0x34ac
    Image Width: 323 Image Length: 82
    Bits/Sample: 1
    Compression Scheme: CCITT Group 4 facsimile encoding
    Photometric Interpretation: min-is-black
    FillOrder: msb-to-lsb
    Document Name: "tmp.pbm"
    Image Description: "converted PNM file"
    Orientation: row 0 top, col 0 lhs
    Samples/Pixel: 1
    Rows/Strip: 1
    Planar Configuration: single image plane

alberto/cfa0-176: tiffinfo tmp1.g4

TIFF Directory at offset 0x2092
    Image Width: 323 Image Length: 82
    Bits/Sample: 1
    Compression Scheme: CCITT Group 4 facsimile encoding
    Photometric Interpretation: min-is-black
    FillOrder: msb-to-lsb
    Document Name: "tmp.pbm"
    Image Description: "converted PNM file"
    Orientation: row 0 top, col 0 lhs
    Samples/Pixel: 1
    Rows/Strip: 199
    Planar Configuration: single image plane

alberto/cfa0-177: tiffcmp -lt tmp.g4 tmp1.g4
RowsPerStrip: 1 199
alberto/cfa0-178: tiff2ps -2 tmp1.g4 | gs -
Initializing... Warning: failed to allocate 5x5x5 RGB cube.
done.
Ghostscript 2.6.1 (5/28/93)
Copyright (C) 1990-1993 Aladdin Enterprises, Menlo Park, CA.
  All rights reserved.
Ghostscript comes with NO WARRANTY: see the file COPYING for details.
alberto/cfa0-179: tiff2ps -2 tmp.g4 | gs -
Initializing... Warning: failed to allocate 5x5x5 RGB cube.
done.
Ghostscript 2.6.1 (5/28/93)
Copyright (C) 1990-1993 Aladdin Enterprises, Menlo Park, CA.
  All rights reserved.
Ghostscript comes with NO WARRANTY: see the file COPYING for details.
Error: /ioerror in --image--
Operand stack:
    -filetype- -filetype- (R\223$R\222\245$\244\222\245J\252\222\222\252\225%"T\244\251\)R\222\242\245\)*\224IUT\221\)$\222H\222H\245@)
Execution stack:
    %interp_exit --nostringval-- --nostringval-- --nostringval-- false --nostringval-- --nostringval-- --nostringval-- --nostringval--
Dictionary stack:
    531/547 0/20 5/200 0/100
Ghostscript: Unrecoverable error, exit code 1

I get the same results when trying to send the file to the printer: the TIFF file with all the data contained in 1 row comes out, the other one doesn't.

The problem doesn't seem to be the ASCII85 encoding, since files created with tiff2ps -28 have the same problem. If I force PS level 1 output, everything goes well.

So it looks like something is going wrong when the code has to read more than one strip without decoding the data... any ideas, Sam? System: Sunos 4.1.3, gcc 2.5.7.

Thank you very much for your help.

- Alberto

==========
Alberto Accomazzi              Harvard-Smithsonian Center for Astrophysics
alberto@cfa.harvard.edu        60 Garden Street, MS 39
(617) 495-7076                 Cambridge, MA  02138  USA