Initial commit

1 files changed, 65 insertions, 0 deletions

diff --git a/pkg/images/tv/display/imdwcsver.x b/pkg/images/tv/display/imdwcsver.x
new file mode 100644
index 00000000..f8fd9a08
--- /dev/null
+++ b/pkg/images/tv/display/imdwcsver.x
@@ -0,0 +1,65 @@
+# Copyright(c) 1986 Association of Universities for Research in Astronomy Inc.
+
+include "iis.h"
+include "zdisplay.h"
+
+# IMD_WCSVER -- Query the server for the WCS version supported.  A zero
+# will be returned for the "old" wcs format used, otherwise the server  
+# will return a version identifier.
+
+int procedure imd_wcsver ()
+
+pointer	ds
+int     chan, status, frame, ip
+char	wcstext[SZ_OLD_WCSTEXT]
+
+int     strncmp(), ctoi(), iisflu()
+pointer	imd_mapframe1()
+bool	envgetb()
+
+include	"iis.com"
+
+begin
+	iis_valid = NO				# initialize
+
+	# Check the environment for a flag to disable the new WCS info.
+        if (envgetb ("disable_wcs_maps")) {
+            iis_version = 0
+	    return (iis_version)
+	}
+
+	# Open a temporary connection to the server if needed.
+	ds = NULL
+	if (iisnopen == 0)
+	    ds = imd_mapframe1 (1, READ_ONLY, NO, NO)
+
+        # Send a WCS query with the X and Y register set.  This tells a
+	# knowledgeable server to reply with a WCS version string, 
+	# otherwise it is a no-op and we get the normal WCS response
+	# indicating the old format.
+
+	frame = 1
+        chan = iisflu (FRTOCHAN(frame))
+        call aclrc (wcstext, SZ_OLD_WCSTEXT)
+        call iishdr (IREAD+PACKED, SZ_OLD_WCSTEXT, WCS, 1, 1, chan, 0)
+        call iisio (wcstext, SZ_OLD_WCSTEXT, status)
+        if (status > 0)
+            call strupk (wcstext, wcstext, SZ_OLD_WCSTEXT)
+	else {
+            iis_version = 0
+	    call imunmap (ds)
+	    return (iis_version)
+	}
+
+        # Decode the version from the WCS text.
+        if (strncmp (wcstext, "version=", 8) == 0) {
+            ip = 9
+            status = ctoi (wcstext, ip, iis_version)
+        } else
+            iis_version = 0
+
+
+	if (ds != NULL)
+	    call imunmap (ds)
+        return (iis_version)
+end