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include <mach.h>
include "export.h"
include "exbltins.h"
# EXb_BUILTIN - Process a builtin format.
procedure exb_process_image (ex)
pointer ex #i task struct pointer
begin
# Branch to the appropriate procedure for processing.
switch (EX_BLTIN(ex)) {
case EPS: # Encapsulated PostScript
call ex_eps (ex)
case GIF: # GIF
call ex_gif (ex)
case IMH: # IRAF OIF
call ex_iraf (ex)
case MIFF: # ImageMagick MIFF file
call ex_miff (ex)
case PGM: # PBMplus PGM (grayscale) file
call ex_pgm (ex)
case PPM: # PBMplus PPM (RGB) file
call ex_ppm (ex)
case RAS: # Sun rasterfile
call ex_ras (ex)
case RGB: # SGI RGB format file
call ex_rgb (ex)
case XWD: # X11 Window Dump
call ex_xwd (ex)
case VICAR: # JPL VICAR2 format image
call ex_vicar (ex)
default:
call error (0, "Unrecognized format")
}
end
# EXB_CHKPARS - Check the parameters for the builtin parameters.
int procedure exb_chkpars (ex)
pointer ex #i task struct pointer
int legal, fmt
begin
# Do a quick check that the number of expressions is valid for
# the requested format.
legal = NO
fmt = EX_BLTIN(ex)
switch (EX_NEXPR(ex)) {
case 1:
# PPM is the only format required to have 3 expressions.
if (fmt != PPM)
legal = YES
case 3:
if (fmt == PPM || fmt == RAS || fmt == RGB ||
fmt == XWD || fmt == EPS || fmt == MIFF)
legal = YES
case 4:
if (fmt == RAS || fmt == XWD)
legal = YES
case EX_UNDEFINED: # let it slide for now....
legal = YES
default:
if (bitset (EX_OUTFLAGS(ex), OF_BAND))
legal = YES
}
if (legal == NO) {
call error (1, "Wrong no. of expressions for requested format")
return (ERR)
}
# Check the bswap param. If it's set but ignored by a given format
# warn the user.
if (EX_BSWAP(ex) != S_NONE && (fmt != RAS && fmt != XWD)) {
call eprintf ("Warning: `bswap' parameter will be ignored")
return (ERR)
}
return (OK)
end
# EXB_DO_FORMAT - Process a builtin task format parameter and set appropriate
# flags.
procedure exb_do_format (ex, format)
pointer ex #i task struct pointer
char format[ARB] #i format parameter value
char fmt[SZ_FNAME]
int strdic()
begin
switch (strdic (format, fmt, SZ_FNAME, EX_FORMATS)) {
case EPS, EPSI, EPI, EPSF, PS:
EX_BLTIN(ex) = EPS
EX_COLOR(ex) = YES
case GIF, GIFF:
EX_BLTIN(ex) = GIF
EX_COLOR(ex) = YES
case IMH, IRAF:
EX_BLTIN(ex) = IMH
EX_COLOR(ex) = NO
case MIFF:
EX_BLTIN(ex) = MIFF
EX_COLOR(ex) = YES
case PGM:
EX_BLTIN(ex) = PGM
EX_COLOR(ex) = NO
case PPM:
EX_BLTIN(ex) = PPM
EX_COLOR(ex) = NO
case RAS, SUN, SUNRAS:
EX_BLTIN(ex) = RAS
EX_COLOR(ex) = YES
case RGB, SGI, IRIS:
EX_BLTIN(ex) = RGB
EX_COLOR(ex) = NO
case XWD, X11:
EX_BLTIN(ex) = XWD
EX_COLOR(ex) = YES
case VICAR:
EX_BLTIN(ex) = VICAR
EX_COLOR(ex) = NO
default:
call error (2, "Unknown format.")
}
end
# EXB_PNAME - Print verbose name of the format.
procedure exb_pname (ex)
pointer ex #i task struct pointer
begin
switch (EX_BLTIN(ex)) {
case EPS:
call pargstr ("Encapsulated PostScript")
case GIF:
call pargstr ("GIF")
case MIFF:
call pargstr ("ImageMagick MIFF")
case PGM:
call pargstr ("PGM")
case PPM:
call pargstr ("PPM")
case RAS:
call pargstr ("Sun Rasterfile")
case RGB:
call pargstr ("SGI RGB")
case XWD:
call pargstr ("X11 Window Dump")
case VICAR:
call pargstr ("JPL VICAR2 Image")
default:
call pargstr ("")
}
end
# EXB_PENDIAN - Print byte order of the format.
procedure exb_pendian (ex)
pointer ex #i task struct pointer
begin
switch (EX_BLTIN(ex)) {
case GIF:
call pargstr ("Least Significant Byte First")
default:
if (EX_BSWAP(ex) == 0 && (BYTE_SWAP2==NO || BYTE_SWAP4==NO))
call pargstr ("Most Significant Byte First")
else
call pargstr ("Least Significant Byte First")
}
end
# EXB_PSTORAGE - Print pixel storage type of the format.
procedure exb_pstorage (ex)
pointer ex #i task struct pointer
int flags
begin
switch (EX_BLTIN(ex)) {
case GIF:
call pargstr ("LZW compressed bytes")
case RGB:
call pargstr ("Band interleaved")
default:
flags = EX_OUTFLAGS(ex)
if (bitset(flags, OF_BAND) || bitset(flags,BAND_STORAGE))
call pargstr ("Band Interleaved")
else if (bitset(flags, OF_LINE) || bitset(flags,LINE_STORAGE))
call pargstr ("Line Interleaved")
else if (bitset(flags,PIXEL_STORAGE))
call pargstr ("Pixel Interleaved")
else
call pargstr ("Unknown")
}
end
# EXB_FMT_EXT - Print the name of the builtin format. The returned pointer
# must be freed by the calling procedure.
pointer procedure exb_fmt_ext (ex)
pointer ex #i task struct pointer
pointer suf
begin
call malloc (suf, SZ_FNAME, TY_CHAR)
switch (EX_BLTIN(ex)) {
case EPS: call strcpy (".eps", Memc[suf], SZ_FNAME)
case GIF: call strcpy (".gif", Memc[suf], SZ_FNAME)
case IMH: call strcpy (".imh", Memc[suf], SZ_FNAME)
case MIFF: call strcpy (".miff", Memc[suf], SZ_FNAME)
case PGM: call strcpy (".pgm", Memc[suf], SZ_FNAME)
case PPM: call strcpy (".ppm", Memc[suf], SZ_FNAME)
case RAS: call strcpy (".ras", Memc[suf], SZ_FNAME)
case RGB: call strcpy (".rgb", Memc[suf], SZ_FNAME)
case XWD: call strcpy (".xwd", Memc[suf], SZ_FNAME)
case VICAR: call strcpy (".vic", Memc[suf], SZ_FNAME)
default: Memc[suf] = EOS
}
return (suf)
end
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