Initial commit

1 files changed, 74 insertions, 0 deletions

diff --git a/pkg/dataio/export/bltins/exrgb.x b/pkg/dataio/export/bltins/exrgb.x
new file mode 100644
index 00000000..119168e6
--- /dev/null
+++ b/pkg/dataio/export/bltins/exrgb.x
@@ -0,0 +1,74 @@
+include <mach.h>
+include "../export.h"
+include "../exbltins.h"
+
+
+define	IMAGIC		0732B		# SGI magic number
+define	BPPMASK		00FFX
+define	ITYPE_VERBATIM	0001X
+define	ITYPE_RLE	0100X
+
+
+# EX_RGB - Write the output image to an SGI RGB format file.
+
+procedure ex_rgb (ex)
+
+pointer	ex				#i task struct pointer
+
+int	i, fd
+short	imagic, type, dim		# stuff saved on disk
+short	xsize, ysize, zsize, pad
+long	min, max
+char	name[80]
+
+begin
+        # Check to see that we have the correct number of expressions to
+        # write this format.
+        if (EX_NEXPR(ex) != 3)
+            call error (7, "Invalid number of expressions for SGI RGB.")
+
+	# Fix up the number of output rows.
+	EX_OROWS(ex) = EX_NLINES(ex) * EX_NEXPR(ex)
+
+	# Load the image header values
+	imagic = IMAGIC
+	type = ITYPE_VERBATIM
+	if (EX_NEXPR(ex) >= 3 && !bitset (EX_OUTFLAGS(ex),OF_BAND)) {
+	    dim = 3
+	    zsize = 3
+	} else {
+	    dim = 2
+	    zsize = 1
+	}
+	xsize = EX_OCOLS(ex)
+	ysize = EX_NLINES(ex)
+	min = 0
+	max = 255
+	call aclrc (name, 80)
+	call strcpy ("no name", name, 80)
+	call achtcb (name, name, 80)
+
+	# Write the header values to the output file.
+	fd = EX_FD(ex)
+	call write (fd, imagic, SZ_SHORT / SZ_CHAR)
+	call write (fd, type, SZ_SHORT / SZ_CHAR)
+	call write (fd, dim, SZ_SHORT / SZ_CHAR)
+	call write (fd, xsize, SZ_SHORT / SZ_CHAR)
+	call write (fd, ysize, SZ_SHORT / SZ_CHAR)
+	call write (fd, zsize, SZ_SHORT / SZ_CHAR)
+	call write (fd, min, SZ_LONG / SZ_CHAR)
+	call write (fd, max, SZ_LONG / SZ_CHAR)
+	call write (fd, 0, SZ_LONG / SZ_CHAR)
+	call write (fd, name, 8 / SZB_CHAR)
+
+	# Pad to a 512 byte header.
+	pad = 0
+	do i = 1, 240
+	    call write (fd, pad, SZ_SHORT / SZ_CHAR)
+
+	# Fix the output parameters.
+	call ex_do_outtype (ex, "b1")
+
+	# Write it out.
+	call ex_no_interleave (ex)
+end