GBR2TIFF.EXE ProgramMany OEM’s do not need the level of control that calling the gbrplt.dll offers because using it directly requires quite a lot of expertise. If your application uses TIFF or BMP output you can use the GBR2TIFF.EXE application that we provide. The work required to move the pixel data from memory to a standard format on disk is done by GBR2TIFF. 
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GBR2TIFF Command Line Syntax
gbr2tiff.exe
gbrfile(s)
{-apt:aptfile | -274x}
[-xf xformfile]
[-ram:R]
[ -tiff:outputfile | -bmp:outputfile | -ps2:outputfile | -bitmap:outputfile ]
[other_options]
where
gbr2tiff the gbr2tiff program
gbrfile the Gerber file to be ripped
-apt:aptfile the name of the aperture list (assuming that
the input file is RS274D. There is no need
for an .apt file in the input is RS274X)
-274x indicates input file is a 274X file
-xf:xformfile optional; name of an ascii file contain
transform parameters for mirroring, rotation
and scaling.
-ram:R use R as the raster buffer size (Mb)
The following output types are available (outtype:filename) Select one:
-tiff:outputfile output file in 1 bit tiff; uncompressed
-pack:outputfile output file is 1 bit tiff; packbits comp.
-ps2:outputfile output in Postscript II (uncompressed)
-cps2:outputfile output is Postscript II RLE compression
-bmp::outputfile output in Windows BMP (monochrome)
-bitmap:outputfile output is raw bitmap (uncompressed)
-atf:outputfile output is custom for Automatech
[other options] if on command line override xform file
-units: {inch | mm} specifies xformfile units
with the exception of Resolution (DPI)
which is always in inches
(aliases -inch, -mm)
-dpi:DPI specifies DPI setting (alias -DPI#)
-enhanced turns off enhanced mode; allows bitmap copy
operation for faster RIP speed (default is
enhanced RIP precision)
-inverse output polarity is reversed
-super:[8 | 16 ] super sample output (-tiff only)
-color[:2 | 16 | 256] set BMP output to 2, 16, or
256 greyscale modes (BMP only)
-color[:black | red | green | yellow | blue | magenta | cyan]
set Postscript II color (Postscript II only)
-greylevels:L,H,D specify min grey value to be L, max value to be H,
and that of drill files to be D (only valid for -super:16)
-add {GerberDrillFile} add GerberDrillFile to base image (to be used in
conjunction with -super:16 and -greylevels)
-asizeup:X size aperture info up by X units
-round:{best | up | down | none} used with pixel subsampling; sets
which rule to use
-stroke:{best | left | right | none} controls adjustment of stroked
objects.
-flatness:N arc chord error is not to
exceed N pixels
-rotate:A rotate image A degrees (alias -rA)
(when using -imagesize -rotate:auto is valid)
-scale:X[,Y][@P,Q] scale data by X and Y in the x
and y directions respectively
(optionally about the point P,Q)
(default: X = Y) (alias -sX)
-shift:X,Y translate data by X and Y
(incompatible with -wplot)
-xmirror:X reflect data about the line x = X
(-wplot implies simple X mirror, i.e. -mirror:x)
-ymirror:Y reflect data about the line y = Y
(-wplot implies simple Y mirror, i.e. -mirror:y)
-step:Nx,Ny,Dx,Dy arrays data in an Nx by Ny rectangular
array with spacing of Dx and Dy
-image:X,Y rasterize data in the window from the origin
to X,Y (incompatible with -wplot)
-imagesize:X,Y[,x,y] dimension of image is X,Y. if the offsets x,y
from lower left are not specified, the image
is centered.
-wplot x0,y0 x1,y1 rasterize data in the window from x0,y0(LL)
to x1,y1(UR) (incompatible with -image)
-pause don't run right away, wait for user intervention.
-status run visibly.
-logcalls record the calls to setupFunc to plot.log
for debugging purposes.
-nopad do not pad tiff output to the nearest byte.
-noplot do not create any output, rip data only;
for debugging purposes.
-scanonly do not create any output, scan
input GERBER file only
-usedisk create TIFF packbits from raw bitmap image
on disk (for use with -pack)
-aw autowindow data (overrides -wplot parameters).
-margin:X provide a border of X units (used in conjunction
with -wplot or -aw).
-dothreads run a single thread at a time
+dothreads run multiple threads at a time
-maxt:N run at most N threads at a time
Engine Arguments arguments that follow -engargs do not affect
GBR2TIFF but are passed to the gbrplt.dll
argument list.
-engargs
-blowup:N generate an arithmetic exception after N counts
-msgcbs suppress popups and make use of
message callbacks instead
-keep do not delete file droppings
-logmem report memory statistics to plot.log
-loglibs log library usage to plot.log
-oem:ID use ID for keyless operation
-maxstrip:N allow N ATF strips (default: 6)
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Additional Command Line Examples for gbr2tiffExample 1 Using gbr2tiff.exe to convert our sample Gerber file to compressed TIFF format at 1000DPI. The aw command line option is used to tell the software to calculate the extents automatically. C:\WCAD\GBRIP\gbr2tiff.exe icsxseed.gbr -274x -inch -aw -pack:output.tif -dpi:1000 Example 2 Using gbr2tiff.exe to convert a window (lower left at 0,0 and 5,6 as top right) from a Gerber file to compressed TIFF format at 1000DPI. C:\WCAD\GBRIP\gbr2tiff.exe icsxseed.gbr -274x -inch -wplot 0,0 5,6 -pack:output.tif -dpi:1000 Example 3 Using gbr2tiff.exe to convert multiple Gerber files in one command. test_0.gbr test_1.gbr test_2.gbr test_3.gbr test_4.gbr test_5.gbrThen we create a batch file that will execute the gbr2tiff, reading the gerber file names from the text file. C:\WCAD\GBRIP\gbr2tiff.exe @layers.txt -274x -mm -bmp:0.bmp -dpi:45000 -inverseIn this example, the program will create 6 different BMP output files, at 45000DPI and it will also reverse each of the BMP files. |
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