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# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
include <ctype.h>
include <time.h>
include "wcspix.h"
# T_WCSPIX -- Entry point for the WCSPIX Image Support Module for XImtool.
# The WCSPIX task is responsible for converting image coordinates and getting
# pixel values from images of various types. Results are returned to the
# GUI directly using ISM messaging.
procedure t_wcspix ()
pointer wp
int len, disconnect, ncmd
char socket[SZ_FNAME], cmd[SZ_FNAME], message[SZ_LINE], buf[SZ_DATE]
int objid, regid
real x, y
char ref[SZ_FNAME], template[SZ_LINE], param[SZ_FNAME]
bool debug
long clktime()
pointer wp_init()
int envgets(), envgeti(), strdic()
# Standard declarations for the Ximtool WCSPIX client interface.
int xim_connect(), wp_read(), xim_intrhandler()
errchk wp_read, envgets, envgeti
begin
call aclrc (message, SZ_LINE)
call aclrc (cmd, SZ_FNAME)
call aclrc (socket, SZ_FNAME)
# Get the connection socket name from the environment if defined
# or else use the default socket.
if (envgets ("ISMDEV", socket, SZ_FNAME) <= 0)
call strcpy (WCSPIX_CONNECT, socket, SZ_FNAME)
# Open the socket connection on a negotiated socket.
if (xim_connect (socket, WCSPIX_NAME, WCSPIX_MODE) == ERR)
return
# Install an interrupt exception handler so we can exit cleanly.
if (xim_intrhandler() == ERR)
return
# Initialize the task data structures.
wp = wp_init ()
# Check for a runtime debug level.
iferr (WP_DBGLEVEL(wp) = envgeti ("WCSPIX_DEBUG"))
WP_DBGLEVEL(wp) = 0
# Log the connection.
call wp_cnvdate (clktime(0), buf, SZ_DATE)
call sprintf (message, SZ_LINE, "info { %s: WCSPIX Connect}\n")
call pargstr (buf)
call xim_message ("ism_msg", message)
# Loop over the commands read on the connection and process.
disconnect = 1
debug = (WCSPIX_DBG || WP_DBGLEVEL(wp) > 0)
while (wp_read (message, len) != EOF) {
if (debug) {
call eprintf("message: '%s' len=%d\n")
call pargstr (message); call pargi (len)
}
if (len <= 0) {
# Server has disconnected.
disconnect = 0
break
}
# Scan the command string and get the first word.
call sscan (message)
call gargwrd (cmd, SZ_LINE)
ncmd = strdic (cmd, cmd, SZ_LINE, WCSPIX_CMDS)
switch (ncmd) {
case QUIT:
# Server wants us to shut down.
disconnect = 0
break
case INITIALIZE:
call wp_cnvdate (clktime(0), buf, SZ_DATE)
call sprintf (message, SZ_LINE,
"info { %s: WCSPIX Initialize}\n")
call pargstr (buf)
call wp_initialize (wp)
case CACHE:
# <ref> <objid> <regid>
call gargwrd (ref, SZ_FNAME)
call gargi (objid)
call gargi (regid)
if (debug) {
call printf ("cache: objid=%d regid=%d ref='%s'\n")
call pargi(objid); call pargi(regid); call pargstr(ref)
}
# Log the event.
call wp_cnvdate (clktime(0), buf, SZ_DATE)
call sprintf (message, SZ_LINE,
"info { %s: WCSPIX Cache objid=%3d %s}\n")
call pargstr (buf)
call pargi (objid)
call pargstr (ref)
call xim_message ("ism_msg", message)
call wp_cache (wp, objid, regid, ref)
case UNCACHE:
# <id>
call gargi (objid)
if (debug) { call printf("uncache: id=%d\n");call pargi(objid) }
# Log the event.
call wp_cnvdate (clktime(0), buf, SZ_DATE)
call sprintf (message, SZ_LINE,
"info { %s: WCSPIX Uncache objid=%3d}\n")
call pargstr (buf)
call pargi (objid)
call xim_message ("ism_msg", message)
call wp_uncache (wp, objid)
case WCSTRAN:
# <id> <x> <y> [[<region> <x> <y>] ["NDC" <x> <y> ]]
call gargi (objid)
call gargr (x) ; call gargr (y)
if (debug) {
call printf ("wcstran: id=%d (%g,%g)\n")
call pargi(objid); call pargr (x); call pargr (y)
}
call wp_wcstran (wp, objid, x, y)
case WCSLIST:
# <id>
call gargi (objid)
if (debug) { call printf ("wcslist: id=%d\n");call pargi(objid)}
call wp_wcslist (wp, objid)
case OBJINFO:
# <id> <template_list>
call gargi (objid)
call gargwrd (template, SZ_FNAME)
if (debug) {
call printf ("objinfo: id=%d temp='%s'\n")
call pargi(objid); call pargstr (template);
}
call wp_objinfo (wp, objid, template)
case SET:
# <param> <value>
call gargwrd (param, SZ_FNAME)
call wp_setpar (wp, param)
case GET:
# <param>
case DEBUG:
debug = !(debug)
default:
if (debug) {
call eprintf ("ISM default: len=%d msg='%s'\n")
call pargi(len); call pargstr(message)
}
}
# Clear the buffer for the next read.
call aclrc (message, SZ_LINE)
}
# Disconnect from the server and clean up.
call xim_disconnect (disconnect)
call wp_shutdown (wp)
end
# WP_INITIALIZE -- Initialize the WCSPIX, uncache any previously cached images.
procedure wp_initialize (wp)
pointer wp #i WCSPIX structure
pointer cp, wp_id2obj()
int i
begin
for (i=0; i < SZ_CACHE; i=i+1) {
cp = wp_id2obj (wp, i)
if (cp != NULL && C_OBJID(cp) != NULL)
call wp_uncache (wp, C_OBJID(cp))
}
end
# WP_CACHE -- Associate and object reference with a unique object id.
procedure wp_cache (wp, objid, regid, ref)
pointer wp #i WCSPIX structure
int objid #i object id
int regid #i region id
char ref[ARB] #i object ref
pointer cp
int i, class
char alert[SZ_FNAME]
int wp_class()
include "class.com"
begin
# Find an unused slot in the object cache.
for (i=0; i < SZ_CACHE; i=i+1) {
cp = OBJCACHE(wp,i)
if (C_NREF(cp) == 0)
break
}
# Get the object class.
class = wp_class (ref)
if (class == ERR) {
# Send alert to the GUI.
call sprintf (alert, SZ_FNAME, "wp_cache: Unable to cache\n%s")
call pargstr (ref)
call xim_alert (alert, "", "")
# Setup for linear system.
return
}
C_CLASS(cp) = class
# Initialize the object.
if (class != NULL && CL_INIT(class) != NULL)
call zcall2 (CL_INIT(class), cp, wp)
# Call the cache function.
if (class != NULL && CL_CACHE(class) != NULL)
call zcall4 (CL_CACHE(class), cp, objid, regid, ref)
end
# WP_UNCACHE -- Remove an object from the WCSPIX cache.
procedure wp_uncache (wp, id)
pointer wp #i WCSPIX structure
int id #i object id
pointer cp, wp_id2obj()
int class
include "class.com"
begin
cp = wp_id2obj (wp, id)
if (cp == NULL)
return
# Call the uncache function.
class = C_CLASS(cp)
if (class != NULL && CL_UNCACHE(class) != NULL)
call zcall2 (CL_UNCACHE(class), cp, id)
C_NREF(cp) = 0
end
# WP_WCSTRAN -- Translate image coords to WCS values.
procedure wp_wcstran (wp, id, x, y)
pointer wp #i WCSPIX structure
int id #i object id
real x, y #i image coords
pointer cp, wp_id2obj()
int class
include "class.com"
begin
cp = wp_id2obj (wp, id)
if (cp == NULL)
return
# Call the uncache function.
class = C_CLASS(cp)
if (class != NULL && CL_WCSTRAN(class) != NULL)
call zcall4 (CL_WCSTRAN(class), cp, id, x, y)
end
# WP_WCSLIST -- List the available world coordinate systems for the given
# object.
procedure wp_wcslist (wp, id)
pointer wp #i WCSPIX structure
int id #i object id
pointer cp, wp_id2obj()
int class
include "class.com"
begin
cp = wp_id2obj (wp, id)
if (cp == NULL)
return
# Call the uncache function.
class = C_CLASS(cp)
if (class != NULL && CL_WCSLIST(class) != NULL)
call zcall2 (CL_WCSLIST(class), cp, id)
end
# WP_OBJINFO -- Get and image header or keyword templates for the given
# object.
procedure wp_objinfo (wp, id, template)
pointer wp #i WCSPIX structure
int id #i object id
char template[ARB] #i keyword template
pointer cp, wp_id2obj()
int class
include "class.com"
begin
cp = wp_id2obj (wp, id)
if (cp == NULL)
return
# Call the uncache function.
class = C_CLASS(cp)
if (class != NULL && CL_OBJINFO(class) != NULL)
call zcall3 (CL_OBJINFO(class), cp, id, template)
end
# WP_SETPAR -- Set the value of a WCSPIX ISM parameter.
procedure wp_setpar (wp, param)
pointer wp #i WCSPIX structure pointer
char param[SZ_FNAME] #i WCSPIX param name
char arg[SZ_PARAM], buf[SZ_PARAM], msg[SZ_PARAM]
int line
int strdic()
include "class.com"
begin
if (WCSPIX_DBG) { call printf ("set: %s = ");call pargstr(param) }
switch (strdic (param, param, SZ_PARAM, WCSPIX_PARAMS)) {
case PAR_PSIZE:
call gargi (WP_PTABSZ(wp))
if (WCSPIX_DBG) { call printf ("%d\n");call pargi(WP_PTABSZ(wp)) }
case PAR_BPM:
call gargi (WP_BPM(wp))
if (WCSPIX_DBG) { call printf ("%d\n");call pargi(WP_BPM(wp)) }
case PAR_WCS:
call gargwrd (buf, SZ_FNAME)
call gargi (line)
call strcpy (buf, arg, SZ_PARAM)
call strlwr (buf)
switch (strdic (buf, buf, SZ_FNAME, WCSPIX_SYSTEMS)) {
case SYS_LOGICAL: SYSTEMS(wp,line) = SYS_LOGICAL
case SYS_PHYSICAL: SYSTEMS(wp,line) = SYS_PHYSICAL
case SYS_WORLD: SYSTEMS(wp,line) = SYS_WORLD
case SYS_NONE: SYSTEMS(wp,line) = SYS_NONE
case SYS_AMP: SYSTEMS(wp,line) = SYS_AMP
case SYS_CCD: SYSTEMS(wp,line) = SYS_PHYSICAL
case SYS_DETECTOR: SYSTEMS(wp,line) = SYS_DETECTOR
default: SYSTEMS(wp,line) = SYS_SKY
}
call strcpy (buf, WCSNAME(wp,line), LEN_WCSNAME)
if (WCSPIX_DBG) {
call printf("%s line=%d\n");call pargstr(buf);call pargi(line) }
call sprintf (msg, SZ_FNAME, "wcstype %s %d")
call pargstr (arg)
call pargi (line)
call wcspix_message (msg)
case PAR_FMT:
call gargwrd (buf, SZ_FNAME)
call gargi (line)
call strcpy (buf, arg, SZ_PARAM)
call strlwr (buf)
switch (strdic (buf, buf, SZ_FNAME, WCSPIX_FMT)) {
case FMT_DEFAULT: FORMATS(wp,line) = FMT_DEFAULT
case FMT_HMS: FORMATS(wp,line) = FMT_HMS
case FMT_DEG: FORMATS(wp,line) = FMT_DEG
case FMT_RAD: FORMATS(wp,line) = FMT_RAD
default: FORMATS(wp,line) = FMT_DEFAULT
}
if (WCSPIX_DBG) {
call printf("%s line=%d\n");call pargstr(buf);call pargi(line) }
call sprintf (msg, SZ_FNAME, "wcsfmt %s %d")
call pargstr (arg)
call pargi (line)
call wcspix_message (msg)
}
end
# WP_GETPAR -- Get the value of a WCSPIX ISM parameter.
procedure wp_getpar (wp, param)
pointer wp #i WCSPIX structure pointer
char param[SZ_FNAME] #i WCSPIX param name
int strdic()
begin
if (WCSPIX_DBG) { call printf ("set: %s = ");call pargstr(param) }
switch (strdic (param, param, SZ_PARAM, WCSPIX_PARAMS)) {
case PAR_PSIZE:
case PAR_BPM:
case PAR_WCS:
case PAR_FMT:
}
end
################################################################################
#
# Private procedures.
#
################################################################################
# WP_INIT -- Initialize the WCSPIX task and data structures.
pointer procedure wp_init ()
pointer wp #r WCSPIX structure pointer
int i
begin
# Allocate the task structure.
iferr (call calloc (wp, SZ_WCSPIX, TY_STRUCT))
call error (0, "Error opening WCSPIX task structure.")
call calloc (WP_SYSTEMS(wp), MAX_WCSLINES, TY_INT)
call calloc (WP_FORMATS(wp), MAX_WCSLINES, TY_INT)
call calloc (WP_WCS(wp), (LEN_WCSNAME*MAX_WCSLINES), TY_CHAR)
for (i=1; i <= MAX_WCSLINES; i=i+1) {
FORMATS(wp,i) = DEF_FMT
SYSTEMS(wp,i) = DEF_SYSTEM
call strcpy ("none", WCSNAME(wp,i), LEN_WCSNAME)
}
# Allocate the object cache.
call calloc (WP_CPTR(wp), SZ_CACHE, TY_STRUCT)
for (i=0; i < SZ_CACHE; i=i+1)
call calloc (OBJCACHE(wp,i), SZ_CNODE, TY_STRUCT)
WP_PTABSZ(wp) = DEF_PTABSZ
WP_BPM(wp) = DEF_BPM_FLAG
# Initialize the class modules.
call wp_class_init()
return (wp)
end
# WP_READ -- Read messages from the connection and process them optimally for
# this ISM. This means we segment the messages and handle only the last
# few WCS requests so we can keep up with the server requests. Presumably
# there are more cursor events coming which are no longer valid so some are
# thrown out.
int procedure wp_read (message, len)
char message[ARB] #o message buffer
int len #o length of message
int nread
int xim_read() # low-level i/o
errchk xim_read
begin
nread = xim_read (message, len)
return (nread)
end
# WP_SHUTDOWN -- Shut down the WCSPIX, freeing all storage
procedure wp_shutdown (wp)
pointer wp #i WCSPIX structure
int i
begin
# Free the structures.
call mfree (WP_WCS(wp), TY_CHAR)
call mfree (WP_FORMATS(wp), TY_INT)
call mfree (WP_SYSTEMS(wp), TY_INT)
for (i=0; i < SZ_CACHE; i=i+1)
call mfree (OBJCACHE(wp,i), TY_STRUCT)
call mfree (WP_CPTR(wp), TY_STRUCT)
call mfree (wp, TY_STRUCT)
end
# WP_CLASS -- Determine the object class for the named image/file.
int procedure wp_class (object)
char object[ARB] #i object reference
int n, class
pointer im
char ch, buf[SZ_FNAME]
int strlen(), stridx()
bool streq()
pointer immap()
errchk immap
begin
# The following kludge is necessary to protect against the case
# where dev$pix is used as a test image. The 'object' pathname in
# this case is "node!/path/dev/pix" which lacks the extension
# and causes the task to fail to open because of a conflict with
# the pix.hhh in the same directory. Most IRAF tasks work since
# the imio$iki code treats the string "dev$pix" as a special case.
call imgimage (object, buf, SZ_FNAME)
n = strlen (buf) - 7
if (streq (buf[n], "/dev/pix")) {
call strcpy ("dev$pix", buf, SZ_FNAME)
ch = '['
n = stridx (ch, object)
if (n > 0)
call strcat (object[n], buf, SZ_FNAME)
call strcpy (buf, object, SZ_FNAME)
}
# See if we can map the image to get at least an image class. If
# so then check for special subclasses like Mosaic files, spectra, etc.
class = UNKNOWN_CLASS
ifnoerr (im = immap (object, READ_ONLY, 0)) {
class = IMAGE_CLASS
# Now check for subclasses. (TBD)
call imunmap (im)
}
return (class)
end
# WP_ID2OBJ -- Utility routine to convert and object id to the cache pointer.
pointer procedure wp_id2obj (wp, id)
pointer wp #i WCSPIX structure
int id #i object id
int i
pointer cp
begin
for (i=0; i < SZ_CACHE; i=i+1) {
cp = OBJCACHE(wp,i)
if (C_OBJID(cp) == id)
return (cp)
}
return (NULL)
end
# WP_CLASS_INIT -- Initialize the WCSPIX ISM class modules.
procedure wp_class_init()
extern img_init(), img_cache(), img_uncache()
extern img_wcstran(), img_wcslist(), img_objinfo()
extern mef_init(), mef_cache(), mef_uncache()
extern mef_wcstran(), mef_wcslist(), mef_objinfo()
extern msp_init(), msp_cache(), msp_uncache()
extern msp_wcstran(), msp_wcslist(), msp_objinfo()
extern unk_init(), unk_cache(), unk_uncache()
extern unk_wcstran(), unk_wcslist(), unk_objinfo()
include "class.com"
int locpr()
begin
cl_nclass = 0
# Load the class modules.
call wp_load_class ("unknown",
locpr(unk_init), locpr(unk_cache), locpr(unk_uncache),
locpr(unk_wcstran), locpr(unk_wcslist), locpr(unk_objinfo))
call wp_load_class ("image",
locpr(img_init), locpr(img_cache), locpr(img_uncache),
locpr(img_wcstran), locpr(img_wcslist), locpr(img_objinfo))
call wp_load_class ("mef",
locpr(mef_init), locpr(mef_cache), locpr(mef_uncache),
locpr(mef_wcstran), locpr(mef_wcslist), locpr(mef_objinfo))
call wp_load_class ("multispec",
locpr(msp_init), locpr(msp_cache), locpr(msp_uncache),
locpr(msp_wcstran), locpr(msp_wcslist), locpr(msp_objinfo))
end
# WP_LOAD_CLASS -- Load an object class module for the ISM task.
procedure wp_load_class (name, init, cache, uncache, tran, list, info)
char name[ARB] #I module name
int init #I initialize procedure
int cache #I cache the object procedure
int uncache #I uncache the object procedure
int tran #I translate WCS procedure
int list #I list WCS proedure
int info #I get header procedure
errchk syserrs
include "class.com"
begin
# Get a new driver slot.
if (cl_nclass + 1 > MAX_CLASSES)
return
cl_nclass = cl_nclass + 1
# Load the driver.
CL_INIT(cl_nclass) = init
CL_CACHE(cl_nclass) = cache
CL_UNCACHE(cl_nclass) = uncache
CL_WCSTRAN(cl_nclass) = tran
CL_WCSLIST(cl_nclass) = list
CL_OBJINFO(cl_nclass) = info
call strcpy (name, CL_NAME(cl_nclass), SZ_FNAME)
end
# WCSPIX_MESSAGE -- Deliver a message to the ISM callback, tagged with
# our name so it can be passed off to the correct code.
procedure wcspix_message (message)
char message[ARB] #I message to send
pointer sp, msgbuf
int msglen, mlen, ip
int strlen()
begin
# Get the message length plus some extra for the braces and padding.
mlen = strlen (message)
msglen = mlen + 64
# Allocate and clear the message buffer.
call smark (sp)
call salloc (msgbuf, msglen, TY_CHAR)
call aclrc (Memc[msgbuf], msglen)
ip = 0
call amovc ("deliver wcspix { ", Memc[msgbuf], 17) ; ip = ip + 17
call amovc (message, Memc[msgbuf+ip], mlen) ; ip = ip + mlen
call amovc (" }\0", Memc[msgbuf+ip], 2) ; ip = ip + 2
call xim_message ("ism_msg", Memc[msgbuf])
call sfree (sp)
end
define SZ_WEEKDAY 3
define SZ_MONTH 3
# WP_CNVDATE -- Convert a time in integer seconds since midnight on Jan 1, 1980
# into a short string such as "5/15 18:24".
procedure wp_cnvdate (ltime, outstr, maxch)
long ltime # seconds since 00:00:00 10-Jan-1980
char outstr[ARB]
int maxch
int tm[LEN_TMSTRUCT]
begin
call brktime (ltime, tm)
# call sprintf (outstr, maxch, "%2d/%2d %2d:%02d")
# call pargi (TM_MONTH(tm))
# call pargi (TM_MDAY(tm))
# call pargi (TM_HOUR(tm))
# call pargi (TM_MIN(tm))
# call sprintf (outstr, maxch, "%2d:%02d")
# call pargi (TM_HOUR(tm))
# call pargi (TM_MIN(tm))
call sprintf (outstr, maxch, "%2d:%02d:%02d")
call pargi (TM_HOUR(tm))
call pargi (TM_MIN(tm))
call pargi (TM_SEC(tm))
end
#----------------
# DEBUG ROUTINES.
#----------------
procedure dbg_printcache (wp, buf)
pointer wp
char buf[ARB]
pointer cp, wp_id2obj()
int i
begin
call printf ("%s\n") ; call pargstr (buf)
for (i=0; i < SZ_CACHE; i=i+1) {
cp = wp_id2obj (wp, i)
if (C_DATA(cp) != NULL) {
call printf ("%3d: id=%d ref='%s'\n")
call pargi(i)
call pargi(C_OBJID(cp))
call pargstr(C_REF(cp))
}
}
end
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