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October 1994

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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