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+include <mach.h>
+include "../import.h"
+
+
+# IPRAS.X - Source file for the IMPORT task rasterfile builtin format.
+
+
+define SZ_RASHDR 13
+define RAS_MAGIC Memi[$1] # Magic number
+define RAS_WIDTH Memi[$1+1] # Image width (pixels per line)
+define RAS_HEIGHT Memi[$1+2] # Image height (number of lines)
+define RAS_DEPTH Memi[$1+3] # Image depth (bits per pixel)
+define RAS_LENGTH Memi[$1+4] # Image length (bytes)
+define RAS_TYPE Memi[$1+5] # File type
+define RAS_MAPTYPE Memi[$1+6] # Colormap type
+define RAS_MAPLENGTH Memi[$1+7] # Colormap length (bytes)
+
+define RAS_CMAP Memi[$1+10] # Colormap (ptr)
+define RAS_COUNT Memi[$1+11] # RLE decoding var
+define RAS_CH Memi[$1+12] # RLE decoding var
+
+# Rasterfile magic number
+define RAS_MAGIC_NUM 59A66A95X
+define RAS_RLE 80X
+
+# Sun supported ras_types
+define RT_OLD 0 # Raw pixrect image in 68000 byte order
+define RT_STANDARD 1 # Raw pixrect image in 68000 byte order
+define RT_BYTE_ENCODED 2 # Run-length compression of bytes
+define RT_FORMAT_RGB 3 # XRGB or RGB instead of XBGR or BGR
+define RT_FORMAT_TIFF 4 # tiff <-> standard rasterfile
+define RT_FORMAT_IFF 5 # iff (TAAC format) <-> standard rasterfile
+define RT_EXPERIMENTAL 65535 # Reserved for testing
+
+# Sun supported ras_maptypes
+define RMT_NONE 0 # ras_maplength is expected to be 0
+define RMT_EQUAL_RGB 1 # red[ras_maplength/3],green[],blue[]
+define RMT_RAW 2
+
+
+
+# IP_RAS - Read and process a Sun Rasterfile into an IRAF image.
+
+procedure ip_ras (ip, fname, info_only, verbose)
+
+pointer ip #i import struct pointer
+char fname[ARB] #i file name
+int info_only #i print out image info only?
+int verbose #i verbosity flag
+
+pointer ras
+int fd, w, nchars
+pointer ras_open()
+
+long filepos
+common /rascom/ filepos
+
+begin
+ # Allocate the ras struct pointer.
+ ras = ras_open ()
+ fd = IP_FD(ip)
+
+ # Initialize the file position.
+ filepos = 1
+ call ip_lseek (fd, BOF)
+
+ # Read in the rasterfile header, dump it directly to the task struct.
+ call ip_ageti (fd, ras, 8)
+ filepos = filepos + SZ_INT32 * SZB_CHAR * 8
+ call ip_lseek (fd, filepos)
+
+ # Now do some sanity checking on the values.
+ if (RAS_MAGIC(ras) != RAS_MAGIC_NUM)
+ call error (0, "Not a Sun rasterfile.")
+ if (RAS_TYPE(ras) == RT_OLD && RAS_LENGTH(ras) == 0)
+ RAS_LENGTH(ras) = RAS_WIDTH(ras) * RAS_HEIGHT(ras) *
+ RAS_DEPTH(ras) / 8
+
+ # See if we really want to convert this thing.
+ if (info_only == YES) {
+ call ip_ras_info (ip, ras, fname, verbose)
+ call ras_close (ras)
+ return
+ }
+
+ # Get the colormap (if any).
+ call ras_rdcmap (fd, ras, RAS_CMAP(ras))
+ IP_CMAP(ip) = RAS_CMAP(ras)
+
+ # Round up to account for 16 bit line blocking.
+ w = RAS_WIDTH(ras) * (RAS_DEPTH(ras) / 8)
+ nchars = w + mod (w, SZB_CHAR)
+
+
+ # Patch up the pixtype param if needed.
+ call ip_fix_pixtype (ip)
+
+ # See if we need to create any outbands operands if the user didn't.
+ if (IP_NBANDS(ip) == ERR)
+ call ip_fix_outbands (ip)
+
+ # Now process the image.
+ switch (RAS_DEPTH(ras)) {
+ case 1:
+ call eprintf ("Bitmap rasterfiles aren not supported.")
+ call flush (STDERR)
+
+ case 8:
+ # Standard or byte encoded 8-bit rasterfile.
+ if (RAS_TYPE(ras) == RT_OLD || RAS_TYPE(ras) == RT_STANDARD) {
+ call ip_prband (ip, fd, IP_IM(ip), RAS_CMAP(ras))
+
+ } else if (RAS_TYPE(ras) == RT_BYTE_ENCODED) {
+ call ras_rle8 (ip, ras, fd, nchars)
+
+ } else {
+ call eprintf ("Unsupported 8-bit RAS_TYPE: %d\n")
+ call pargi (RAS_TYPE(ras))
+ call flush (STDERR)
+ }
+
+ case 24, 32:
+ # 24 or 32-bit rasterfiles have no colormap (at least they
+ # shouldn't) and are pixel-interleaved. We already know how to
+ # do this so just call the right routines for processing.
+
+ if (RAS_TYPE(ras) == RT_BYTE_ENCODED) {
+ call ip_fix_pixtype (ip)
+ call ras_rle24 (ip, ras, fd, nchars)
+ } else {
+ call ip_fix_pixtype (ip)
+ call ip_prpix (ip, fd, IP_IM(ip), NULL)
+ }
+
+ default:
+ call eprintf ("Invalid pixel size.")
+ call flush (STDERR)
+ }
+
+ # Clean up.
+ call ras_close (ras)
+ IP_CMAP(ip) = NULL
+end
+
+
+# IP_RAS_INFO - Print information about the raster file.
+
+procedure ip_ras_info (ip, ras, fname, verbose)
+
+pointer ip #i ip struct pointer
+pointer ras #i ras struct pointer
+char fname[ARB] #i file name
+int verbose #i verbosity flag
+
+begin
+ # If not verbose print a one-liner.
+ if (verbose == NO) {
+# call printf ("Input file:\n\t")
+ call printf ("%s: %20t%d x %d \t\t%d-bit Sun Rasterfile\n")
+ call pargstr (fname)
+ call pargi (RAS_WIDTH(ras))
+ call pargi (RAS_HEIGHT(ras))
+ call pargi (RAS_DEPTH(ras))
+
+ # Print out the format comment if any.
+# if (IP_COMPTR(ip) != NULL) {
+# if (COMMENT(ip) != '\0') {
+# call printf ("%s\n")
+# call pargstr (COMMENT(ip))
+# }
+# call strcpy ("\0", COMMENT(ip), SZ_LINE)
+# }
+# if (RAS_DEPTH(ras) > 8) {
+# if (RAS_TYPE(ras) != RT_FORMAT_RGB && RAS_TYPE(ras) != RT_OLD) {
+# call eprintf ("\tNote: %d-bit rasterfile is stored as %s\n")
+# call pargi (RAS_DEPTH(ras))
+# call pargstr ("ABGR and not ARGB")
+# }
+# }
+ return
+ }
+
+ # Print a more verbose description.
+ call printf ("%s: %20tSun Rasterfile\n")
+ call pargstr (fname)
+
+ # Print out the format comment if any.
+ if (IP_COMPTR(ip) != NULL) {
+ if (COMMENT(ip) != '\0') {
+ call printf ("%s\n")
+ call pargstr (COMMENT(ip))
+ }
+ call strcpy ("\0", COMMENT(ip), SZ_LINE)
+ }
+ if (RAS_DEPTH(ras) > 8) {
+ if (RAS_TYPE(ras) != RT_FORMAT_RGB && RAS_TYPE(ras) != RT_OLD) {
+ call eprintf ("\tNote: %d-bit rasterfile is stored as %s\n")
+ call pargi (RAS_DEPTH(ras))
+ call pargstr ("ABGR and not ARGB")
+ }
+ }
+
+ call printf ("%20tByte Order:%38t%s\n")
+ if (IP_SWAP(ip) == S_NONE && BYTE_SWAP2 == NO )
+ call pargstr ("Most Significant Byte First")
+ else
+ call pargstr ("Least Significant Byte First")
+
+ call printf ("%20tResolution:%38t%d x %d\n")
+ call pargi (RAS_WIDTH(ras))
+ call pargi (RAS_HEIGHT(ras))
+
+ call printf ("%20tType: %38t%d-bit %s %s\n")
+ call pargi (RAS_DEPTH(ras))
+ switch (RAS_TYPE(ras)) {
+ case RT_OLD:
+ call pargstr ("Old")
+ case RT_STANDARD:
+ call pargstr ("Standard")
+ case RT_BYTE_ENCODED:
+ call pargstr ("Byte Encoded")
+ case RT_FORMAT_RGB:
+ call pargstr ("RGB")
+ case RT_FORMAT_TIFF:
+ call pargstr ("TIFF")
+ case RT_FORMAT_IFF:
+ call pargstr ("IFF")
+ default:
+ call pargstr ("Experimental (or unknown)")
+ }
+ if (RAS_MAPLENGTH(ras) > 0)
+ call pargstr ("Color Index")
+ else
+ call pargstr ("")
+
+ if (RAS_MAPLENGTH(ras) > 0) {
+ call printf ("%20tColormap:%38t%d entries\n")
+ if (RAS_MAPTYPE(ras) == RMT_EQUAL_RGB)
+ call pargi (RAS_MAPLENGTH(ras)/3)
+ else
+ call pargi (RAS_MAPLENGTH(ras))
+ } else
+ call printf ("%20tColormap:%38tnone\n")
+
+ call printf ("%20tCompression: %38t%s\n")
+ if (RAS_TYPE(ras) == RT_BYTE_ENCODED)
+ call pargstr ("Run Length Encoded")
+ else
+ call pargstr ("None")
+
+ call printf ("%20tAlpha Channel: %38t%s\n")
+ if (RAS_DEPTH(ras) == 32)
+ call pargstr ("yes")
+ else
+ call pargstr ("none")
+end
+
+
+# RAS_OPEN - Open the RAS structure descriptor.
+
+pointer procedure ras_open ()
+
+pointer ras
+
+begin
+ iferr (call calloc (ras, SZ_RASHDR, TY_STRUCT))
+ call error (0, "Error allocating RAS structure.")
+ RAS_CMAP(ras) = NULL
+
+ return (ras)
+end
+
+
+# RAS_CLOSE - Close the RAS structure descriptor.
+
+procedure ras_close (ras)
+
+pointer ras #i RAS struct pointer
+
+begin
+ if (RAS_CMAP(ras) != NULL)
+ call mfree (RAS_CMAP(ras), TY_CHAR)
+ call mfree (ras, TY_STRUCT)
+end
+
+
+# RAS_RDCMAP - Read the colormap from the image if necessary.
+
+procedure ras_rdcmap (fd, ras, cmap)
+
+int fd #i file descriptor
+pointer ras #i RAS struct pointer
+pointer cmap #i colormap array ptr
+
+int ncolors
+
+long filepos
+common /rascom/ filepos
+
+begin
+ # Now read the colormap, allocate the pointer if we need to.
+ ncolors = RAS_MAPLENGTH(ras)
+ if (RAS_MAPTYPE(ras) == RMT_EQUAL_RGB && ncolors > 0) {
+ if (cmap == NULL)
+ call calloc (cmap, ncolors*3, TY_CHAR)
+ call ip_agetb (fd, cmap, ncolors)
+
+ } else if (RAS_MAPTYPE(ras) == RMT_RAW) {
+ call eprintf ("Warning: Can't handle RMT_RAW maptype - ignoring.\n")
+ call flush (STDERR)
+
+ # Skip over the bytes anyway.
+ filepos = filepos + ncolors
+ call ip_lseek (fd, filepos)
+ return
+ }
+
+ filepos = filepos + ncolors
+ call ip_lseek (fd, filepos)
+end
+
+
+# RAS_RLE8 - Process an 8-bit rasterfile into an IRAF image. This
+# procedure handles both standard and RLE files.
+
+procedure ras_rle8 (ip, ras, fd, nchars)
+
+pointer ip #i ip struct pointer
+pointer ras #i ras struct pointer
+int fd #i input file descriptor
+int nchars #i line size
+
+pointer im, data, op
+int i, percent
+
+long filepos
+common /rascom/ filepos
+
+begin
+ im = IP_IM(ip)
+ op = PTYPE(ip,1)
+ call malloc (data, nchars, TY_CHAR)
+ IO_DATA(op) = data
+ IO_NPIX(op) = RAS_WIDTH(ras)
+
+ percent = 0
+ do i = 1, RAS_HEIGHT(ras) {
+ call ras_read_rle (ras, fd, Memc[data], nchars)
+
+ # Apply the colormap since this is just an index.
+ if (RAS_MAPLENGTH(ras) != 0 && IP_USE_CMAP(ip) == YES)
+ call ip_gray_cmap (Memc[data], RAS_WIDTH(ras),
+ RAS_CMAP(ras))
+
+ # Evaluate and write the outbands expressions.
+ call ip_probexpr (ip, im, RAS_WIDTH(ras), i)
+
+ # Print percent done if being verbose
+ if (IP_VERBOSE(ip) == YES) {
+ if (i * 100 / RAS_HEIGHT(ras) >= percent + 10) {
+ percent = percent + 10
+ call printf (" Status: %2d%% complete\r")
+ call pargi (percent)
+ call flush (STDOUT)
+ }
+ }
+
+ }
+
+ if (IP_VERBOSE(ip) == YES) {
+ call printf (" Status: Done \n")
+ call flush (STDOUT)
+ }
+end
+
+
+# RAS_RLE24 - Process an 24-bit rasterfile into an IRAF image. This
+# procedure handles both standard and RLE files.
+
+procedure ras_rle24 (ip, ras, fd, nchars)
+
+pointer ip #i ip struct pointer
+pointer ras #i ras struct pointer
+int fd #i input file descriptor
+int nchars #i line size
+
+pointer im, data, op
+int i, percent, npix
+
+long filepos
+common /rascom/ filepos
+
+begin
+ im = IP_IM(ip)
+ op = PTYPE(ip,1)
+ call malloc (data, nchars, TY_SHORT)
+ IO_DATA(op) = data
+ IO_NPIX(op) = RAS_WIDTH(ras)
+
+ # See if we need to create any outbands operands if the user didn't.
+ if (IP_NBANDS(ip) == ERR)
+ call ip_fix_outbands (ip)
+
+ # Allocate the pixtype data pointers.
+ npix = RAS_WIDTH(ras)
+ do i = 1, IP_NPIXT(ip) {
+ op = PTYPE(ip,i)
+ IO_NPIX(op) = npix
+ call calloc (IO_DATA(op), npix, TY_SHORT)
+ }
+
+ percent = 0
+ do i = 1, RAS_HEIGHT(ras) {
+ call ras_read_rle (ras, fd, Memc[data], nchars)
+
+ # Separate pixels into different vectors.
+ call ip_upkpix (ip, data, npix)
+
+ # Evaluate and write the outbands expressions.
+ call ip_probexpr (ip, im, npix, i)
+
+ # Print percent done if being verbose
+ if (IP_VERBOSE(ip) == YES) {
+ if (i * 100 / RAS_HEIGHT(ras) >= percent + 10) {
+ percent = percent + 10
+ call printf (" Status: %2d%% complete\r")
+ call pargi (percent)
+ call flush (STDOUT)
+ }
+ }
+
+ }
+ if (IP_VERBOSE(ip) == YES) {
+ call printf (" Status: Done \n")
+ call flush (STDOUT)
+ }
+end
+
+
+# RAS_READ_RLE - Read a line of RLE encoded data from the file.
+
+procedure ras_read_rle (ras, fd, data, nchars)
+
+pointer ras #i ras struct pointer
+int fd #i file descriptor
+char data[ARB] #u output pixels
+int nchars #i number of pixels to read
+
+int i
+short pix, ras_rdbyte()
+
+long filepos
+common /rascom/ filepos
+
+begin
+ i = 1
+ while (i <= nchars) {
+ if (RAS_COUNT(ras) > 0) {
+ data[i] = RAS_CH(ras)
+ i = i + 1
+ RAS_COUNT(ras) = RAS_COUNT(ras) - 1
+
+ } else {
+ pix = ras_rdbyte (fd)
+ if (pix == RAS_RLE) {
+ RAS_COUNT(ras) = ras_rdbyte (fd)
+ if (RAS_COUNT(ras) == 0) {
+ data[i] = pix
+ i = i + 1
+ } else {
+ RAS_CH(ras) = ras_rdbyte (fd)
+ data[i] = RAS_CH(ras)
+ i = i + 1
+ }
+ } else {
+ data[i] = pix
+ i = i + 1
+ }
+ }
+ }
+end
+
+
+# RAS_RDBYTE - Read a single byte at the current offset from the file.
+
+short procedure ras_rdbyte (fd)
+
+int fd #i file descriptor
+
+short val
+short ip_getb()
+
+long filepos
+common /rascom/ filepos
+
+begin
+ iferr (val = ip_getb (fd, filepos))
+ return (ERR)
+
+ filepos = filepos + 1
+ call ip_lseek (fd, filepos)
+
+ return (val)
+end
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