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# IMAGES.DAT -- Database of known formats recognized by the IMPORT task.
#
# Each record of the database is of the form:
#
# <format_name>:
# <alias>:
# <alias>:
# keyword = <expr>
# keyword = <expr>
# ...and so on
#
# A database record begins with the format name at the beginning of a line.
# Whitespace at the beginning of a line is considered the continuation of a
# previous line. Comments may be inserted in the database using the normal '#'
# character, the remainder of the line is considered a comment. Blank lines
# and comments are ignored, a record ends at the next line with a format name
# at the beginning of the line.
#
# The format_name field is a string identifying each entry in the
# database, an alias may also be given to identify the same field if known
# by another name. Supported keywords include:
#
# image_id - A boolean expression identifying the image type, either
# using a literal string or one of the provided functions
# id_string - Verbose name of file format
# bswap - Is file byte-swapped? (See Below)
# dims - A whitespace/comma delimited string of image dimension
# pixtype - Pixel type, size [and tag], may be a composite
# interleave - Describes how pixels are stored
# hskip - # of bytes of header info to skip
# tskip - # of bytes of trailing info to skip at end of file
# bskip - # of bytes of info to skip between image bands
# lskip - # of bytes of info to skip at the front of each line
# lpad - # of bytes of info to skip at the end of each line
# yflip - Image is flipped relative to normal IRAF orientation
# comment - (Multiple) informational comment string to be printed,
# e.g. to warn the user about the pixel ordering.
# error - A condition that would cause a file read error, returns
# a string with the error message, otherwise NULL
#
# Expressions include not only functions supported by the system expression
# evaluator but also special functions particular to the IMPORT task. The
# user is referred to the IMPORT help page for more details on the database
# functions.
#
# Expressions may also contain *previously defined* database fields, so for
# instance the 'hskip' keyword can be computed in an expression using the
# value of the 'pixtype' keyword. Additionally, several special operands are
# also supported and may be used in expressions:
#
# $FSIZE - the size in bytes of the binary file
# $FNAME - the name of the binary file
avs: # AVS X image file
mbfx:
mbfavs:
x:
image_id = ($FSIZE - (geti4(1) * geti4(5) * 4) == 8)
id_string = "AVS X Image Format file"
dims = (str(geti4(1)) // "," // str(geti4(5))) // ",4"
pixtype = "x1,b1,b1,b1"
hskip = 8
yflip = 1
comment = "Note: The first band of this image is an alpha channel."
clementine: # CLEMENTINE mission image
pds3:
image_id = (getstr(1,23) == "PDS_VERSION_ID = PDS3")
id_string = "CLEMENTINE 1 PDS3 image data file"
pixtype = "b1"
hskip = int(locate(1,"OBJECT = IMAGE\r\n")+16)
bskip = int(locate(hskip,"LINE_SAMPLES"))
lskip = int(locate(hskip,"LINES"))
# dims = ((str(ctoi((locate(hskip,"LINE_SAMPLES")+17)))) // "," //
# (str(ctoi((locate(hskip,"LINES")+17)))) )
dims = ((str(ctoi((locate(bskip,"=")+1)))) // "," //
(str(ctoi((locate(lskip,"=")+1)))) )
hskip = (ctoi(locate(1,"^IMAGE ")+18))
bskip = 0
lskip = 0
yflip = 0
export: # EXPORT task output format
image_id = (getstr(1,15) == "format = EXPORT")
id_string = "IRAF EXPORT file (with header)"
bswap = (getstr(locate(1,"bswap")+9,locate(1,"bswap")+11) == "no")
hskip = ctoi(locate(1,"hdrsize =")+10)
pixtype = (getstr(locate(1,"datatype = '")+12,2))
dims = ((ctoi(locate(1,"nbands =")+8) > 1) ?
(str(ctoi(locate(1,"ncols = ")+8)) // "," //
str(ctoi(locate(1,"nrows = ")+8)) // "," //
str(ctoi(locate(1,"nbands = ")+9)))
: (str(ctoi(locate(1,"ncols = ")+8)) // "," //
str(ctoi(locate(1,"nrows = ")+8))))
interleave = ctoi(locate(1,"interleave =")+13)
fits: # Uhh, use RFITS for this
bswap = parameter ("bswap")
image_id = (getstr(1,9) == "SIMPLE =")
id_string = "FITS Format image"
hskip = ( int (locate(1,"END ") / 2800) ) * 2880
pixtype = ( str (ctoi((locate(1,"BITPIX")+10))) )
pixtype = ((pixtype == "8" ? "b1" :
(pixtype == "16" ? "i2" :
(pixtype == "32" ? "i4" :
(pixtype == "-32" ? "r4" :
(pixtype == "-64" ? "r8" : "0"))))))
dims = ((ctoi(locate(1,"NAXIS ")+10) == 3) ?
(str(ctoi(locate(1,"NAXIS1")+10)) // "," //
str(ctoi(locate(1,"NAXIS2")+10)) // "," //
str(ctoi(locate(1,"NAXIS3")+10)))
: (str(ctoi(locate(1,"NAXIS1")+10)) // "," //
str(ctoi(locate(1,"NAXIS2")+10))))
gif: # CompuServe's GIF format
giff:
image_id = ( (getstr(1,6) == "GIF87a") || (getstr(1,6) == "GIF89a") )
id_string = "CompuServe GIF Format File"
dims = (str((getb(7)+(256*getb(8)))) //","// str((getb(9)+(256*getb(10)))))
pixtype = "u1"
hskip = 22
yflip = 1
comment = "Note: Colormap information will automatically be applied."
oif: # An IRAF OIF pixel file
imh:
iraf:
bswap = (geti2(1) == 26880 && # bswap("impix" in SPP chars)
geti2(3) == 27904 &&
geti2(5) == 28672 &&
geti2(7) == 26880 &&
geti2(9) == 30720)
image_id = (geti2(1) == 105 && # "impix" in SPP chars
geti2(3) == 109 &&
geti2(5) == 112 &&
geti2(7) == 105 &&
geti2(9) == 120)
id_string = "IRAF OIF image pixel file"
dims = ((geti2(23) == 3) ?
(str(geti2(27)) //","// str(geti2(31)) //","// str(geti2(35)))
: (str(geti2(27)) //","// str(geti2(31))) )
pixtype = ((geti2(17) == 3 ? "i2" :
(geti2(17) == 4 ? "i4" :
(geti2(17) == 5 ? "i4" :
(geti2(17) == 6 ? "n4" :
(geti2(17) == 7 ? "n8" : ""))))) )
hskip = 1024
lpad = (geti2(55) - geti2(27))
lpad = (lpad * ((geti2(17) == 3 ? (2) :
(geti2(17) == 4 ? (4) :
(geti2(17) == 5 ? (4) :
(geti2(17) == 6 ? (4) :
(geti2(17) == 7 ? (8) : (1))))))) )
error = (geti2(23) > 3) ? "Maximum of 3 dimensions supported." : "okay"
error = ((geti2(17) > 7) || (geti2(17) < 3)) ?
"Image data type not supported." : "okay"
mcidas: # Unidata McIDAS file
image_id = (geti4(5) == 4)
id_string = "McIDAS"
dims = (str(geti4(37)) // "," // str(geti4(33)))
pixtype = "b1"
hskip = geti4(133)
lskip = geti4(57)
yflip = 1
miff: # ImageMagick MIFF format
mif:
image_id = (locate(1,"id=ImageMagick") < locate (1,":\n"))
id_string = "ImageMagick MIFF format file"
hskip = ((locate(1,":\n") + 1) + (ctoi(locate(1,"colors=")+7) * 3) + 1)
dims = (str(ctoi(locate(1,"columns=")+8)) // "," //
str(ctoi(locate(1,"rows=")+5)) )
yflip = 1
pixtype = (getstr(locate(1,"class=")+6,6) == "Direct" ? "b1,b1,b1" :
((ctoi(locate(1,"colors=")+7) > 256) ? "b2" : "b1"))
error = locate(1,"compression") > 1 ?
"Compressed files not supported" : "okay"
error = ctoi(locate(1,"colors=")+7) > 256 ?
"Too many entries in colormap" : "okay"
comment = "Note: Colormaps will not be applied to image."
pgm: # PBMPlus PGM format
rpgm:
image_id = (getstr(1,2) == "P5" || getstr(1,2) == "P2")
id_string = "PBMPlus PGM format file"
pixtype = "b1"
hskip = ((str(getstr(line(2),1)) != "#") ? # see if there's a comment
(int(line(4) - 1))
: (int(line(5) - 1)) )
dims = ((str(getstr(line(2),1)) != "#") ?
(str(ctoi(line(2))) // "," // str(ctoi(locate(line(2)," "))))
: (str(ctoi(line(3))) // "," // str(ctoi(locate(line(3)," ")))) )
yflip = 1
error = getstr(1,2) == "5P" ? "File is byte-swapped" : "okay"
error = getstr(1,2) == "P2" ? "Only raw PGM files are supported." : "okay"
ppm: # PBMPlus PPM format
pnm:
rppm:
image_id = (getstr(1,2) == "P6" || getstr(1,2) == "P3")
id_string = "PBMPlus PPM format file"
pixtype = "b1,b1,b1"
hskip = ((str(getstr(line(2),1)) != "#") ? # see if there's a comment
(int(line(4) - 1))
: (int(line(5) - 1)) )
dims = ((str(getstr(line(2),1)) != "#") ?
(str(ctoi(line(2))) // "," // str(ctoi(locate(line(2)," "))))
: (str(ctoi(line(3))) // "," // str(ctoi(locate(line(3)," ")))) )
dims = dims // ",3"
yflip = 1
error = getstr(1,2) == "6P" ? "File is byte-swapped" : "okay"
error = getstr(1,2) == "P3" ? "Only raw PGM files are supported." : "okay"
rgb: # SGI RGB format image
iris:
sgi:
bswap = (getu(1) == bswap(0732b))
image_id = (getu(1) == 0732b)
id_string = "SGI RGB Image file"
dims = ((geti2(5) == 3) ?
(str(geti2(7)) // "," // str(geti2(9)) // "," // str(geti2(11)))
: (str(geti2(7)) // "," // str(geti2(9))) )
pixtype = "b1"
hskip = 512
interleave = 0
error = (geti2(3) == 3) ? "Colormap files not supported" : "okay"
error = ((geti2(3) != 0) && (geti2(3) != 1)) ?
"Format of RGB file not supported" : "okay"
error = (geti2(3) == 257) ? "RLE compressed files not supported" : "okay"
sunras: # Sun rasterfile
ras:
bswap = (geti4(1) == bswap(59a66a95x))
image_id = (geti4(1) == 59a66a95x || bswap)
id_string = "Sun Rasterfile"
dims = (str(geti4(5)) // "," // str(geti4(9)) //
((geti4(13) > 8) ? ("," // str(3)) : " ") )
pixtype = ((geti4(13) == 8 ? "b1" :
(geti4(13) == 24 ? "b1,b1,b1" :
(geti4(13) == 32 ? "x1,b1,b1,b1" : "x1,b1,b1,b1") )) )
interleave = 0
hskip = (32 + geti4(29))
yflip = 1
comment = "Note: Colormaps will automatically be applied to 8-bit images."
error = geti4(13) == 1 ? "1-bit rasters not supported." : "okay"
iff: # Sun TAAC Image File Format
taac:
vff:
suniff:
image_id = (getstr(1,4) == "ncaa")
id_string = "Sun TAAC Image File Format"
dims = (str(ctoi(locate(1,"size=")+5)) // "," //
str(ctoi(locate((locate(1,"size=")+5)," "))) )
dims = ((ctoi((locate(1,"bands=")+6)) == 3) ? (dims // ",3") : dims )
hskip = $FSIZE - (ctoi(locate(1,"size=")+5) *
ctoi(locate((locate(1,"size=")+5)," ")) *
ctoi((locate(1,"bands=")+6)) )
pixtype = ((ctoi((locate(1,"bands=")+6)) == 3) ? "b1,b1,b1" : "b1" )
yflip = 1
comment = "Note: Colormaps will not be applied to 8-bit images."
vicar: # VICAR format file
bswap = ( msb_host() && (getstr((locate(1,"INTFMT=")+8),3) == "LOW") )
image_id = (getstr(1,8) == "LBLSIZE=")
id_string = "VICAR format image data file"
hskip = (ctoi((locate(1,"LBLSIZE=")+8)) +
(ctoi((locate(1,"NLB=")+4)) * ctoi((locate(1,"RECSIZE=")+8))))
lskip = (ctoi((locate(1,"NBB=")+4)))
interleave = (((getstr((locate(1,"ORG=")+5),3))) == "BSQ" ? 0 :
((getstr((locate(1,"ORG=")+5),3)) == "BIL" ?
ctoi(locate(1,"NB=")+3) : 999) )
pixtype = (getstr((locate(1,"FORMAT=")+8),4))
pixtype = ((pixtype == "BYTE" ? "b1" :
(pixtype == "HALF" ? "i2" :
(pixtype == "FULL" ? "i4" :
(pixtype == "REAL" ? "r4" :
(pixtype == "DOUB" ? "r8" : "0"))))))
pixtype = (((interleave) != 999) ? pixtype :
((ctoi(locate(1,"DIM=")+5) == 2) ?
pixtype // "," // pixtype :
((ctoi(locate(1,"DIM=")+5) == 3) ?
pixtype // "," // pixtype // "," // pixtype :
(pixtype) )) )
dims = (((ctoi(locate(1,"DIM=")+4)==3) && (ctoi(locate(1,"N3=")+3)!=1)) ?
(str(ctoi(locate(1,"N1=")+3)) // "," //
str(ctoi(locate(1,"N2=")+3)) // "," //
str(ctoi(locate(1,"N3=")+3)))
: (str(ctoi(locate(1,"N1=")+3)) // "," //
str(ctoi(locate(1,"N2=")+3))))
yflip = 1
error = ((getstr((locate(1,"TYPE=")+6),5) != "IMAGE") ?
"Not a VICAR image file." : "okay")
error = ((getstr((locate(1,"FORMAT=")+8),4) == "COMP") ?
"Complex image data not supported" : "okay")
x10: # X10 Window Dump file
x10wd:
image_id = (geti4(5) == 6)
id_string = "X10 Window Dump file"
hskip = ( geti4(1) + (10 * geti2(39)) )
pixtype = "b1"
dims = (str(geti4(21)) // "," // str(geti4(25)))
comment = "Note: Colormaps will not be applied to image."
xwd: # X11 Window Dump file
x11:
x11wd:
#bswap = ( msb_host() && (geti4(29) == 0) )
image_id = (geti4(5) == 7)
id_string = "X11 Window Dump file"
dims = (str(geti4(17)) // "," // str(geti4(21)))
dims = ( (geti4(45) == 24) ? str (dims // ",3") : dims ) # add dims
dims = ( (geti4(45) == 32) ? str (dims // ",4") : dims ) # add dims
hskip = ( geti4(1) + (12 * geti4(73)) )
# On a 64-bit machine the colormap struct is 16 bytes long instead of
# 12, see if we have one of these files and pad the header.
hskip = ( ((geti4(17)*geti4(21)*(geti4(45)/8)) + hskip) < ($FSIZE-1024) ?
(hskip + (4*geti4(73))) : hskip)
lpad = ( geti4(49) - (geti4(17) * (geti4(45) / 8)) )
pixtype = ( (geti4(45) == 8) ? "b1" :
(geti4(45) == 24) ? "b1,b1,b1" :
(geti4(45) == 32) ? "x1,b1,b1,b1" : "x1,b1,b1,b1" )
yflip = 1
#########################################################################
# #
# The following database entries are not supported for conversion but #
# are provided for file identification purposes. #
# #
#########################################################################
cmuwmraster: # CMU Window Manager Raster
bswap = (geti4(1) == bswap(00F10040BBx))
image_id = (geti4(1) == 00F10040BBx || bswap)
id_string = "CMU Window manager Raster file (ID only)"
dims = (str(geti4(5)) // "," // str(geti4(9)) // "," // str(geti2(11)))
error = (1 == 1) ? "CMU raster supported for file identification only." :
"okay"
fbm: # Fuzzy Bitmap Format file
image_id = (getstr(1,7) == "%bitmap")
id_string = "Fuzzy Bitmap Format file (ID only)"
dims = (str(ctoi(getstr(17,8))) // "," // str(ctoi(getstr(9,8))))
error = (1 == 1) ? "FBM supported for file identification only." :
"okay"
hdf: # NCSA Hierarchical Data File
df:
ncsa:
bswap = ( lsb_host() )
image_id = (geti4(1) == 0e031301x)
id_string = "NCSA Hierarchical Data File (ID only)"
dims = (str(geti2(822)) // "," // str(geti2(826)))
error = (1 == 1) ? "NCSA HDF supported for file identification only." :
"okay"
msp: # Microsoft Paint Bitmap
bswap = (geti2(1) == bswap(01800x) || geti2(1) == bswap(0694Cx))
image_id = ((geti2(1) == 01800x && geti2(3) == 04D6Ex) ||
(geti2(1) == 0694Cx && geti2(3) == 0536Ex))
id_string = "Microsoft Paint Bitmap (ID only)"
dims = (str(geti2(5)) // "," // str(geti2(7)))
error = (1 == 1) ? "MSP supported for file identification only." :
"okay"
pcx: # PC Paintbrush File Format
dcx:
pcc:
image_id = (getb(1) == 010x)
id_string = "PC Paintbrush File (ID only)"
dims = (str(geti2(9) - geti2(5) + 1) // "," //
str(geti2(11) - geti2(7) + 1))
error = (1 == 1) ? "PC Paintbrush supported for file identification only." :
"okay"
pic: # Pictor PC Paint
clp:
bswap = (geti2(1) == bswap(01234x))
image_id = (geti2(1) == 01234x)
id_string = "Pictor PC Paint bitmap (ID only)"
dims = (str(geti2(3)) // "," // str(geti2(5)))
error = (1 == 1) ? "PC Paint supported for file identification only." :
"okay"
ps: # Postscript file
postscript:
image_id = (getstr(1,2) == "%!")
id_string = "Postscript file (ID only)"
error = (1 == 1) ? "PS supported for file identification only." :
"okay"
rle: # Utah Raster Toolkit file
utah:
image_id = (getb(1) == 52x || getb(1) == 00CCx)
id_string = "Utah Raster Toolkit Format file (ID only)"
error = (1 == 1) ? "RLE supported for file identification only." :
"okay"
tif: # TIFF format file
tiff:
bswap = (geti2(1) == bswap(4949x) || geti2(1) == bswap(4D4Dx))
image_id = ((geti2(1) == 4D4Dx && geti2(3) == 002Ax) ||
(geti2(1) == 4949x && geti2(3) == 2A00x))
id_string = "TIFF Format file (ID only)"
error = (1 == 1) ? "TIFF supported for file identification only." :
"okay"
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