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|
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#ifdef __WIN32
#include <winsock2.h>
#else
#include <fcntl.h>
#include <errno.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/types.h>
#endif
#include <unistd.h>
#include <time.h>
#include <ctype.h>
#ifdef HAVE_SYS_UN_H
/*#include <sys/un.h>*/
#endif
#include "iis.h"
#include "xim.h"
/* IIS data pixel values. */
#define CMS_DATASTART 1
#define CMS_DATAEND 200
#define CMS_DATARANGE 200
/* IIS color assignments. */
#define CMS_CURSOR 201
#define CMS_BACKGROUND 202
#define CMS_FOREGROUND 203
#define CMS_RED 204
#define CMS_GREEN 205
#define CMS_BLUE 206
#define CMS_YELLOW 207
#define CMS_CYAN 208
#define CMS_MAGENTA 209
#define XtInputId void *
#define XtNumber(x) MAX_CLIENTS
/*
* IIS.C -- IRAF/IIS "imtool" protocol module. This code is responsible for
* accepting connections from remote network clients and communicating with
* them via the imtool/iis image display server communications prototcol.
*
* fd = xim_iisopen (xim)
* xim_iisclose (xim)
* xim_iisio (xim, &fd, &id)
*
* xim_frameLabel (xim)
* xim_encodewcs (xim, sx, sy, sz, obuf)
* xim_retCursorVal (xim, sx, sy, frame, wcs, key, strval)
*
* xim_iisiomap (w, iomap, &iomap_len)
* xim_iiscolormap (w, r, g, b, &first, &ngray, &rgb_len)
*
* xim_iisio is a callback procedure called by Xt when there is input to be
* processed on the stream used to communicate with the remote client.
*/
#define MEMORY 01 /* frame buffer i/o */
#define LUT 02 /* lut i/o */
#define FEEDBACK 05 /* used for frame clears */
#define IMCURSOR 020 /* logical image cursor */
#define WCS 021 /* used to set WCS */
#define SZ_IOBUF 65536 /* max size data transfer */
#define IO_TIMEOUT 30 /* i/o not getting anywhere */
#define MAXCONN 5
#define IIS_VERSION 10 /* version 10 -> 1.0 */
#define SZ_IMCURVAL 160
#define PACKED 0040000
#define COMMAND 0100000
#define IIS_READ 0100000
#define IMC_SAMPLE 0040000
#define IMT_FBCONFIG 077
#define XYMASK 077777
struct iism70 {
short tid;
short thingct;
short subunit;
short checksum;
short x, y, z;
short t;
};
/* Running id for frame mappings. We keep a separate id for each of the
* currently allowed MAX_FRAMES since the object id is used in the WCS
* code for the image along with the (frame_num * 100).
*/
int objid[] = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, };
static int *wcspix_enabled = NULL;
static int iis_debug = -1; /* protocol debug */
static void set_fbconfig(), add_mapping();
static void xim_connectClient(), xim_disconnectClient();
static int chan_read(), chan_write(), decode_frameno();
static CtranPtr wcs_update();
static IoChanPtr open_fifo();
static IoChanPtr open_inet();
#ifdef HAVE_SYS_UN_H
static IoChanPtr open_unix();
#endif
static IoChanPtr get_iochan();
static MappingPtr xim_getMapping(XimDataPtr, float, float, int);
static void print_mappings(FrameBufPtr fr);
#ifndef __WIN32
extern int errno;
#endif
/* XIM_IISOPEN -- Initialize the IIS protocol module and ready the module to
* accept client connections and begin processing client requests. Clients
* may connect to the server using a fifo connection or an internet or
* UNIX domain socket connection. All three types of server ports are
* simultaneously ready to receive client connections.
*/
int xim_iisOpen(XimDataPtr xim)
{
int nopen = 0;
if (open_fifo (xim))
nopen++;
if (open_inet (xim))
nopen++;
#ifdef HAVE_SYS_UN_H
if (open_unix (xim))
nopen++;
#endif
return (nopen);
}
/* XIM_IISCLOSE -- Close down the IIS protocol module.
*/
void xim_iisClose(XimDataPtr xim)
{
IoChanPtr chan;
int i;
for (i=0, chan=NULL; i < XtNumber(xim->chan); i++) {
chan = &xim->chan[i];
if (chan->id) {
xim_removeInput (xim, (int)chan->id);
chan->id = 0;
}
switch (chan->type) {
case IO_FIFO:
if (chan->keepalive >= 0)
close (chan->keepalive);
if (chan->datain >= 0)
close (chan->datain);
if (chan->dataout >= 0)
close (chan->dataout);
chan->type = 0;
break;
case IO_INET:
#ifdef __WIN32
closesocket(chan->datain);
#else
close (chan->datain);
#endif
chan->type = 0;
break;
#ifdef HAVE_SYS_UN_H
case IO_UNIX:
close (chan->datain);
unlink (chan->path);
chan->type = 0;
break;
#endif
}
}
}
/* OPEN_FIFO -- Ooen the (x)imtool fifo port and make ready to accept client
* connections and begin processing client requests. There is no client
* yet at this stage.
*/
static IoChanPtr open_fifo(XimDataPtr xim)
{
#ifdef __DARWIN__
/* On OS X we don't use fifos. */
xim->input_fifo = "none";
return (NULL);
#endif
#ifdef __WIN32
/* On Windows we don't use fifos. */
xim->input_fifo = "none";
return (NULL);
#else
IoChanPtr chan;
int datain, dataout;
int keepalive;
/* Setting the input fifo to "none" or the null string disables
* fifo support.
*/
if (!xim->input_fifo[0] || strcmp(xim->input_fifo,"none")==0)
return (NULL);
datain = dataout = -1;
/* Open the output fifo (which is the client's input fifo). We have
* to open it ourselves first as a client to get around the fifo
* open-no-client error.
*/
if ((datain = open (xim->input_fifo, O_RDONLY|O_NDELAY)) != -1) {
if ((dataout = open (xim->input_fifo, O_WRONLY|O_NDELAY)) != -1)
fcntl (dataout, F_SETFL, O_WRONLY);
else
goto done;
close (datain);
} else
goto done;
/* Open the input stream, a FIFO pseudodevice file used by
* applications to send us commands and data.
*/
if ((datain = open (xim->output_fifo, O_RDONLY|O_NDELAY)) == -1)
goto done;
else {
/* Clear O_NDELAY for reading. */
fcntl (datain, F_SETFL, O_RDONLY);
/* Open the client's output fifo as a pseudo-client to make it
* appear that a client is connected.
*/
keepalive = open (xim->output_fifo, O_WRONLY);
}
done:
/* Allocate and fill in i/o channel descriptor. */
if (datain > 0 && dataout > 0 && ((chan = get_iochan(xim)))) {
chan->xim = (XtPointer) xim;
chan->type = IO_FIFO;
chan->datain = datain;
chan->dataout = dataout;
chan->keepalive = keepalive;
chan->reference_frame = 1;
chan->version = 0;
chan->rf_p = &xim->frames[0];
} else {
/*
fprintf (stderr, "Warning: cannot open %s\n", xim->output_fifo);
*/
strcpy (xim->input_fifo, "none");
chan = NULL;
}
/* Register input callback. */
if (chan) {
chan->id = xim_addInput(xim, chan->datain, xim_iisio, chan);
} else {
if (datain > 0)
close (datain);
if (dataout > 0)
close (dataout);
}
return (chan);
#endif
}
/* OPEN_INET -- Set up a port to be used for incoming client connections
* using internet domain sockets.
*/
static IoChanPtr open_inet(XimDataPtr xim)
{
int s = 0;
IoChanPtr chan;
struct sockaddr_in sockaddr;
int reuse = 1;
/* Setting the port to zero disables inet socket support. */
if (xim->port <= 0)
return (NULL);
if ((s = socket (AF_INET, SOCK_STREAM, 0)) < 0)
goto err;
memset ((void *)&sockaddr, 0, sizeof(sockaddr));
sockaddr.sin_family = AF_INET;
sockaddr.sin_port = htons((short)xim->port);
sockaddr.sin_addr.s_addr = htonl(INADDR_ANY);
if (setsockopt(s, SOL_SOCKET, SO_REUSEADDR, (char *)&reuse,
sizeof(reuse)) < 0)
goto err;
if (bind (s, (struct sockaddr *)&sockaddr, sizeof(sockaddr)) < 0)
goto err;
if (listen (s, MAXCONN) < 0)
goto err;
/* make sure we close on exec */
#ifndef __WIN32
fcntl(s, F_SETFD, FD_CLOEXEC);
#endif
/* Allocate and fill in i/o channel descriptor. */
if ((chan = get_iochan(xim))) {
chan->xim = (XtPointer) xim;
chan->type = IO_INET;
chan->datain = s;
chan->dataout = s;
chan->reference_frame = 1;
chan->version = 0;
chan->rf_p = &xim->frames[0];
/* Register connectClient callback. */
chan->id = xim_addInput(xim, s, xim_connectClient, chan);
return (chan);
}
err:
/*
if (errno == EADDRINUSE) {
fprintf (stderr,"ximtool: inet port %d already in use - disabled\n",
xim->port);
} else {
fprintf (stderr, "ximtool: can't open inet socket %d, errno=%d\n",
xim->port, errno);
}
*/
xim->port = 0;
if (s)
#ifdef __WIN32
closesocket(s);
#else
close (s);
#endif
return (NULL);
}
/* OPEN_UNIX -- Set up a port to be used for incoming client connections
* using unix domain sockets.
*/
#ifdef HAVE_SYS_UN_H
static IoChanPtr open_unix(XimDataPtr xim)
{
int s = 0;
IoChanPtr chan;
struct sockaddr_un sockaddr;
int addrlen;
char path[256];
/* Setting the addr to "none" or the null string disables unix
* socket support.
*/
if (!xim->unixaddr[0] || strcmp(xim->unixaddr,"none")==0)
return (NULL);
/* Get path to be used for the unix domain socket. */
sprintf (path, xim->unixaddr, getuid());
unlink (path);
if ((s = socket (AF_UNIX, SOCK_STREAM, 0)) < 0)
goto err;
memset ((void *)&sockaddr, 0, sizeof(sockaddr));
sockaddr.sun_family = AF_UNIX;
strcpy (sockaddr.sun_path, path);
addrlen = sizeof(sockaddr) - sizeof(sockaddr.sun_path) + strlen(path);
if (bind (s, (struct sockaddr *)&sockaddr, addrlen) < 0)
goto err;
if (listen (s, MAXCONN) < 0)
goto err;
/* make sure we close on exec */
fcntl(s, F_SETFD, FD_CLOEXEC);
/* Allocate and fill in i/o channel descriptor. */
if ((chan = get_iochan(xim))) {
chan->xim = (XtPointer) xim;
chan->type = IO_UNIX;
chan->datain = s;
chan->dataout = s;
chan->reference_frame = 1;
chan->version = 0;
chan->rf_p = &xim->frames[0];
strncpy (chan->path, path, SZ_FNAME);
/* Register connectClient callback. */
chan->id = xim_addInput (xim,s,xim_connectClient,(XtPointer)chan);
return (chan);
}
err:
/*
if (errno == EADDRINUSE) {
fprintf (stderr,"ximtool: unix addr %s already in use - disabled\n",
path);
} else {
fprintf (stderr,"ximtool: cannot open unix socket '%s', errno=%d\n",
path, errno);
}
*/
strcpy (xim->unixaddr, "none");
if (s)
close (s);
return (NULL);
}
#endif
/* XIM_CONNECTCLIENT -- Called when a client has attempted a connection on
* a socket port. Accept the connection and set up a new i/o channel to
* communicate with the new client.
*/
static void xim_connectClient(IoChanPtr chan_port, int *source, XtPointer id)
{
XimDataPtr xim = (XimDataPtr) chan_port->xim;
IoChanPtr chan;
int s;
/* Accept connection. */
// if ((s = accept ((int)*source, (struct sockaddr *)0, (socklen_t *)0)) < 0)
if ((s = accept ((int)*source, (struct sockaddr *)0, NULL)) < 0)
return;
/* if (fcntl (s, F_SETFL, O_RDWR|O_NDELAY) < 0) {
close (s);
return;
} */
/* Allocate and fill in i/o channel descriptor. */
if ((chan = get_iochan(xim))) {
chan->xim = (XtPointer) xim;
chan->type = chan_port->type;
chan->datain = s;
chan->dataout = s;
chan->reference_frame = 1;
chan->version = 0;
chan->rf_p = &xim->frames[0];
chan->id = xim_addInput(xim, s, xim_iisio, chan);
}
}
/* XIM_DISCONNECTCLIENT -- Called to close a client connection when EOF is
* seen on the input port. Close the connection and free the channel
* descriptor.
*/
static void xim_disconnectClient(IoChanPtr chan)
{
switch (chan->type) {
case IO_INET:
case IO_UNIX:
#ifdef __WIN32
closesocket(chan->datain);
#else
close (chan->datain);
#endif
if (chan->id) {
xim_removeInput(chan->xim, chan->id);
chan->id = 0;
}
chan->type = 0;
break;
default:
break;
}
}
/* GET_IOCHAN --- Get an i/o channel descriptor.
*/
static IoChanPtr get_iochan(XimDataPtr xim)
{
int i;
for (i=0; i < XtNumber(xim->chan); i++)
if (!xim->chan[i].type)
return (&xim->chan[i]);
return (NULL);
}
/* XIM_IISIO -- Xt file i/o callback procedure, called when there is input
* pending on the data stream to the ximtool client.
*/
void xim_iisio (IoChanPtr chan, int *fd_addr, XtInputId *id_addr)
{
XimDataPtr xim = (XimDataPtr) chan->xim;
MappingPtr mp = (MappingPtr) NULL;
FrameBufPtr fb;
int sum, i;
short *p;
int datain = *fd_addr;
int dataout = chan->dataout;
int ndatabytes, nbytes, n, newframe, ntrys=0;
struct iism70 iis;
char buf[SZ_FIFOBUF];
static int errmsg=0, bswap=0;
/* Initialize the debug output. */
if (iis_debug == -1)
iis_debug = (getenv("DEBUG_IIS") != (char *)NULL);
/* Get the IIS header. */
if ((n = chan_read (datain, (char *)&iis, sizeof(iis))) < sizeof(iis)) {
if (n != 0)
fprintf (stderr,
"ximtool: command input read error, n=%d of %d, errno=%d\n",
n, (int)sizeof(iis), errno);
if (n <= 0)
xim_disconnectClient (chan);
return;
} else if (bswap)
bswap2 ((char *)&iis, (char *)&iis, sizeof(iis));
/* Verify the checksum. If it fails swap the bytes and try again.
*/
for (;;) {
for (i=0, sum=0, p=(short *)&iis; i < 8; i++)
sum += *p++;
if ((sum & 0177777) == 0177777)
break;
if (ntrys++) {
if (!errmsg++) {
fprintf (stderr, "ximtool: bad data header checksum\n");
if (bswap)
bswap2 ((char *)&iis, (char *)&iis, sizeof(iis));
fprintf (stderr, "noswap:");
for (i=0, p=(short *)&iis; i < 8; i++)
fprintf (stderr, " %6o", p[i]);
fprintf (stderr, "\n");
bswap2 ((char *)&iis, (char *)&iis, sizeof(iis));
fprintf (stderr, " swap:");
for (i=0, p=(short *)&iis; i < 8; i++)
fprintf (stderr, " %6o", p[i]);
fprintf (stderr, "\n");
}
break;
} else {
bswap2 ((char *)&iis, (char *)&iis, sizeof(iis));
bswap = !bswap;
}
}
ndatabytes = -iis.thingct;
if (!(iis.tid & PACKED))
ndatabytes *= 2;
if (iis_debug) {
fprintf (stderr,
"subunit=%06o tid=%06o nbytes=%7d x=%06o y=%06o z=%06o t=%06o\n",
iis.subunit & 077,
iis.tid,
ndatabytes,
iis.x & 0177777,
iis.y & 0177777,
iis.z & 0177777,
iis.t & 0177777);
fflush (stderr);
}
switch (iis.subunit & 077) {
case FEEDBACK:
/* The feedback unit is used only to clear a frame. The
* xim_eraseFrame() procedure takes care of uncaching the
* mappings associated with this frame.
*/
newframe = decode_frameno (iis.z & 0177777);
xim_setReferenceFrame (chan, newframe);
if (newframe == chan->reference_frame)
xim_eraseFrame (xim, chan->reference_frame);
/* ISM: Uncache all mappings associated with this frame. */
fb = &xim->frames[newframe-1];
for (i=0; i < fb->nmaps; i++) {
mp = &fb->mapping[i];
if (mp->id) {
sprintf (buf, "uncache %d", mp->id);
ism_message (xim, "wcspix", buf);
wcspix_message (xim, buf);
mp->id = 0;
}
}
/* Reset various counters for the new frame and release the
* mappings.
*/
fb->nmaps = 0;
fb->ctran.valid = 0;
objid[newframe-1] = 0;
fb->nmaps = 0;
if (iis_debug)
fprintf (stderr, "erase frame %d - ref = %d\n",
newframe, chan->reference_frame);
break;
case LUT:
/* Data mode writes to the frame lookup tables are not implemented.
* A command mode write to the LUT subunit is used to connect
* image memories up to the RGB channels, i.e., to select the frame
* to be displayed. We ignore any attempt to assign multiple
* frames to multiple color channels, and just do a simple frame
* select.
*/
if (iis.subunit & COMMAND) {
int frame, z, n;
short x[17];
if (chan_read (datain, (char *)x, ndatabytes) == ndatabytes) {
if (bswap)
bswap2 ((char *)x, (char *)x, ndatabytes);
z = x[0];
if (!z) z = 1;
for (n=0; !(z & 1); z >>= 1)
n++;
frame = max (1, n + 1);
if (frame > xim->nframes) {
if (frame <= MAX_FRAMES) {
set_fbconfig (chan, xim->fb_configno, frame);
if (iis_debug)
fprintf (stderr, "set_fbconfig (%d, %d)\n",
xim->fb_configno, frame);
} else {
fprintf (stderr, "ximtool warning: ");
fprintf (stderr,
"attempt to display nonexistent frame %d\n",
frame);
return;
}
}
xim_setDisplayFrame (xim, frame);
if (iis_debug)
fprintf (stderr, "set_frame (%d)\n", frame);
return;
}
}
case MEMORY:
/* Load data into the frame buffer. Data is assumed to be byte
* packed.
*/
if (iis.tid & IIS_READ) {
/* Read from the display.
*/
unsigned char *ip, iobuf[SZ_IOBUF];
int nbytes, nleft, n, x, y;
long starttime;
/* Get the frame to read from. */
xim_setReferenceFrame (chan, decode_frameno (iis.z & 0177777));
nbytes = ndatabytes;
x = iis.x & XYMASK;
y = iis.y & XYMASK;
if (x < 0 || x >= xim->width || y < 0 || y >= xim->height) {
fprintf (stderr,
"ximtool: attempted read out of bounds on framebuf\n");
fprintf (stderr,
"read %d bytes at [%d,%d]\n", nbytes, x, y);
memset ((void *)iobuf, 0, nbytes);
} else {
GtReadPixels (xim->gt, chan->rf_p->raster, iobuf, 8, x, y,
min(xim->width-x,nbytes), max(1,nbytes/xim->width));
if (iis_debug)
fprintf (stderr,
"read %d bytes at [%d,%d]\n", nbytes, x, y);
}
/* Return the data from the frame buffer. */
starttime = time(0);
for (nleft=nbytes, ip=iobuf; nleft > 0; nleft -= n) {
n = (nleft < SZ_FIFOBUF) ? nleft : SZ_FIFOBUF;
if ((n = chan_write (dataout, ip, n)) <= 0) {
if (n < 0 || (time(0) - starttime > IO_TIMEOUT)) {
fprintf (stderr, "XIMTOOL: timeout on write\n");
break;
}
} else
ip += n;
}
return;
} else {
/* Write to the display.
*/
unsigned char *op, iobuf[SZ_IOBUF];
int nbytes, nleft, n, x, y;
long starttime;
/* Get the frame to be written into (encoded with a bit for
* each frame, 01 is frame 1, 02 is frame 2, 04 is frame 3,
* and so on).
*/
xim_setReferenceFrame (chan, decode_frameno (iis.z & 0177777));
nbytes = ndatabytes;
x = iis.x & XYMASK;
y = iis.y & XYMASK;
/* Read the data into the frame buffer.
*/
starttime = time(0);
for (nleft=nbytes, op=iobuf; nleft > 0; nleft -= n) {
n = (nleft < SZ_FIFOBUF) ? nleft : SZ_FIFOBUF;
if ((n = chan_read (datain, op, n)) <= 0) {
if (n < 0 || (time(0) - starttime > IO_TIMEOUT)) {
fprintf (stderr, "XIMTOOL: timeout on read\n");
break;
}
} else
op += n;
}
if (x < 0 || x >= xim->width || y < 0 || y >= xim->height) {
fprintf (stderr,
"ximtool: attempted write out of bounds on framebuf\n");
fprintf (stderr,
"write %d bytes at [%d,%d]\n", nbytes, x, y);
memset ((void *)iobuf, 0, nbytes);
} else {
GtWritePixels (xim->gt, chan->rf_p->raster, iobuf, 8, x, y,
min(xim->width-x,nbytes), max(1,nbytes/xim->width));
if (iis_debug)
fprintf (stderr, "write %d bytes at x=%d, y=%d\n",
nbytes, x, y);
}
return;
}
break;
case WCS:
/* Read or write the WCS for a frame. The frame number to
* which the WCS applies is passed in Z and the frame buffer
* configuration in T. The client changes the frame buffer
* configuration in a WCS set. The WCS text follows the header
* as byte packed ASCII data.
*/
if (iis.tid & IIS_READ) {
/* Return the WCS for the referenced frame.
*/
char emsg[SZ_WCSBUF];
char *text;
int frame;
memset ((char *)emsg, 0, SZ_WCSBUF);
if ((iis.x & 017777) && (iis.y & 017777)) {
/* This is a check by the client on our capabilities.
* Return with a version number which can be used by the
* client. However we write back using the old WCS
* buffer size for compatability.
*/
sprintf (text=emsg, "version=%d", IIS_VERSION);
chan->version = IIS_VERSION;
chan_write (dataout, text, SZ_OLD_WCSBUF);
if (iis_debug)
fprintf (stderr, "version query wcs: %s\n",text);
} else if ((iis.x & 017777) && (iis.t & 017777)) {
/* Return the buffer for a specified WCS number.
*/
CtranPtr ct = (CtranPtr) NULL;
FrameBufPtr fr = (FrameBufPtr) NULL;
int wcsnum = (iis.t & 017777);
int i, j;
/* Decode the requested wcs number. */
frame = decode_frameno (iis.z & 0177777);
/* Search for the requested WCS number. */
mp = (MappingPtr) NULL;
for (j=0; j < xim->nframes; j++) {
fr = &xim->frames[j];
if (fr->frameno != frame)
continue;
for (i=0; i < fr->nmaps; i++) {
mp = &fr->mapping[i];
if (mp->id == wcsnum) {
/* found the mapping */
ct = &(mp->ctran);
goto map_found;
}
}
}
/* Encode the WCS and mapping information. */
map_found: if (ct) {
char wcs[SZ_WCSBUF], mapping[SZ_WCSBUF];
sprintf (wcs, "%s\n%f %f %f %f %f %f %f %f %d\n",
ct->imtitle, ct->a, ct->b, ct->c, ct->d,
ct->tx, ct->ty, ct->z1, ct->z2, ct->zt);
sprintf (mapping, "%s %f %f %d %d %d %d %d %d\n%s\n",
mp->region, mp->sx, mp->sy, mp->snx, mp->sny,
mp->dx, mp->dy, mp->dnx, mp->dny, mp->ref);
strcpy (text=emsg, wcs);
strcat (text, mapping);
} else
strcpy (text=emsg, "[NOSUCHWCS]\n");
chan_write (dataout, text, SZ_WCSBUF);
if (iis_debug) {
fprintf (stderr, "query specified wcs=%d frame=%d\n",
wcsnum, frame);
write (2, text, strlen (text));
}
} else {
frame = decode_frameno (iis.z & 0177777);
xim_setReferenceFrame (chan, frame);
/*** waj ***/
/* We always want to use the wcs buffer. If frameno == 0 ds9 will
fill in the buffer.
if (chan->rf_p->frameno <= 0)
strcpy (text=emsg, "[NOSUCHFRAME]\n");
else
*/
/*** waj ***/
text = chan->rf_p->wcsbuf;
if ((iis.x & 0777))
chan_write (dataout, text, SZ_WCSBUF);
else
chan_write (dataout, text, SZ_OLD_WCSBUF);
if (iis_debug) {
fprintf (stderr, "query wcs: frame = %d\n", frame);
write (2, text, strlen(text));
}
}
} else {
/* Set the WCS for the referenced frame.
*/
CtranPtr ct;
int fb_config, frame, new_wcs = 0;
frame = decode_frameno (iis.z & 0177777);
fb_config = (iis.t & 0777) + 1;
new_wcs = (iis.x & 0777);
/* See if we need to change the frame buffer configuration,
* or allocate a new frame.
*/
if (fb_config != xim->fb_configno)
set_fbconfig (chan, fb_config, frame);
else if (frame > xim->nframes && frame <= MAX_FRAMES)
set_fbconfig (chan, xim->fb_configno, frame);
/* Read in and set up the WCS. */
xim_setReferenceFrame (chan, frame);
memset ((char *)buf, 0, SZ_WCSBUF);
if (chan_read (datain, buf, ndatabytes) == ndatabytes)
strncpy (chan->rf_p->wcsbuf, buf,
(new_wcs ? SZ_WCSBUF : SZ_OLD_WCSBUF));
if (iis_debug) {
fprintf (stderr, "set wcs:\n");
write (2, buf, ndatabytes);
}
strcpy (chan->rf_p->ctran.format, W_DEFFORMAT);
chan->rf_p->ctran.imtitle[0] = '\0';
chan->rf_p->ctran.valid = 0;
ct = wcs_update (xim, chan->rf_p);
/* If we're connected to an old-style client, disable the
* WCSPIX ISM, otherwise just let the GUI know it capable.
*/
wcspix_message (xim, (new_wcs ? "capable" : "disable"));
/* Add the mapping information. */
add_mapping (xim, ct, chan->rf_p->wcsbuf,
&xim->frames[chan->reference_frame-1]);
xim_message (xim, "frameTitle", ct->imtitle);
}
return;
case IMCURSOR:
/* Read or write the logical image cursor. This is an extension
* added to provide a high level cursor read facility; this is
* not the same as a low level access to the IIS cursor subunit.
* Cursor reads may be either nonblocking (immediate) or blocking,
* using the keyboard or mouse to terminate the read, and
* coordinates may be returned in either image (world) or frame
* buffer pixel coordinates.
*/
if (iis.tid & IIS_READ) {
/* Read the logical image cursor. In the case of a blocking
* read all we do is initiate a cursor read; completion occurs
* when the user hits a key or button.
*/
if (iis_debug)
fprintf (stderr, "read cursor position\n");
if (iis.tid & IMC_SAMPLE) {
/* Sample the cursor position and return the cursor value
* on the output datastream encoded in a fixed size
* ascii buffer.
*/
int wcs = iis.z;
int raster, frame;
float sx, sy;
IoChanPtr sv_chan;
/* Save the cursor channel so that sampled cursor reads
* can occur on one channel without affecting any
* interactive cursor reads in progress on another
* channel.
*/
sv_chan = xim->cursor_chan;
xim->cursor_chan = chan;
xim_getCursorPos (xim, &sx, &sy, &raster, &frame);
xim_retCursorVal (xim, sx, sy, frame, wcs, 0, "");
xim->cursor_chan = sv_chan;
} else {
/* Initiate a user triggered cursor read. */
if (xim->cursor_chan) {
int frame = xim->cursor_chan->reference_frame;
xim_retCursorVal (xim, 0., 0., frame, 0, EOF, "");
}
xim->cursor_chan = chan;
xim_cursorMode (xim, 1);
}
} else {
/* Write (set) the logical image cursor position. */
CtranPtr ct;
int sx = iis.x, sy = iis.y;
float wx = sx, wy = sy;
int wcs = iis.z;
if (iis_debug)
fprintf(stderr, "write cursor position: [%d,%d]\n", sx, sy);
if (wcs) {
ct = wcs_update (xim, xim->df_p);
if (ct->valid) {
if (abs(ct->a) > .001)
sx = (wx - ct->tx) / ct->a;
if (abs(ct->d) > .001)
sy = (wy - ct->ty) / ct->d;
}
}
xim_setCursorPos (xim, sx, sy);
}
return;
default:
/* Ignore unsupported command input.
*/
break;
}
/* Discard any data following the header. */
if (!(iis.tid & IIS_READ))
for (nbytes = ndatabytes; nbytes > 0; nbytes -= n) {
n = (nbytes < SZ_FIFOBUF) ? nbytes : SZ_FIFOBUF;
if ((n = chan_read (datain, buf, n)) <= 0) {
if (iis_debug)
fprintf (stderr,
"discarding %d bytes following header:\n", n);
break;
}
}
}
/* SET_FBCONFIG -- Set the frame buffer configuration, or add additional
* frames to the current configuration.
*/
static void set_fbconfig(IoChanPtr chan, int config, int frame)
{
XimDataPtr xim = (XimDataPtr) chan->xim;
FrameBufPtr fb = &xim->frames[frame-1];
int i;
if (config != xim->fb_configno) {
/* Change the frame buffer configuration. */
xim_initialize (xim, config,
max (xim->fb_config[config-1].nframes, frame), 1);
/* Reinitialize the tile framing if enabled. */
/* if (xim->tileFrames)
xim_tileFrames (xim, xim->tileFramesList);*/
/* Initialize the ISM to uncache all images when we change
* frame buffer configs.
*/
ism_message (xim, "wcspix", "initialize");
} else if (frame > xim->nframes) {
/* Add additional frames. */
for (i=1; i <= frame; i++) {
fb = &xim->frames[i-1];
if (fb->frameno != i) {
xim_initFrame (xim, i, frame,
&xim->fb_config[config-1], xim->memModel);
/* If we're in tile mode, add the frame to the tile list
* and if needed resize the tile frames.
*/
if (xim->tileFrames) {
xim->tileFramesList |= (1 << (i-1));
xim->nTileFrames++;
/* xim_tileFrames (xim, xim->tileFramesList);*/
}
}
}
}
xim_setReferenceFrame (chan, frame);
if (frame != xim->display_frame)
xim_setDisplayFrame (xim, frame);
}
/* DECODE_FRAMENO -- Decode encoded IIS register frame number.
*/
static int decode_frameno(int z)
{
int n;
/* Get the frame number, encoded with a bit for each frame, 01 is
* frame 1, 02 is frame 2, 04 is frame 3, and so on.
*/
if (!z) z = 1;
for (n=0; !(z & 1); z >>= 1)
n++;
return (max (1, n + 1));
}
/* XIM_RETCURSORVAL -- Return the cursor value on the output datastream to
* the client which requested the cursor read.
*/
void xim_retCursorVal(XimDataPtr xim, float sx, float sy, int frame, int wcs, int key, char* strval)
{
CtranPtr ct;
MappingPtr mp = (MappingPtr) NULL;
int dataout, wcscode;
char curval[SZ_IMCURVAL];
char keystr[20];
float wx, wy;
if (xim->cursor_chan)
dataout = xim->cursor_chan->dataout;
else
return;
/* Compute cursor coordinates. */
if (wcs) {
ct = wcs_update (xim, xim->df_p);
if (ct->valid) {
/* The imtool WCS assumes that the center of the first display
* pixel is at (0,0) but actually it is at (0.5,0.5).
*/
sx -= 0.5;
sy -= 0.5;
if (abs(ct->a) > .001)
wx = ct->a * sx + ct->c * sy + ct->tx;
if (abs(ct->d) > .001)
wy = ct->b * sx + ct->d * sy + ct->ty;
}
} else {
wx = sx;
wy = sy;
}
/* Compute WCS code. */
wcscode = frame * 100 + wcs;
if (wcspix_enabled != NULL && *wcspix_enabled) {
if ((mp = xim_getMapping (xim, sx, sy, frame))) {
wcscode = mp->id;
/* Return the coordinates in terms of the mapping. */
ct = &(mp->ctran);
wx = ct->a * sx + ct->c * sy + ct->tx;
wy = ct->b * sx + ct->d * sy + ct->ty;
}
}
/* Encode the cursor value. */
if (key == EOF)
sprintf (curval, "EOF\n");
else {
if (isprint (key) && !isspace(key)) {
keystr[0] = key;
keystr[1] = '\0';
} else
sprintf (keystr, "\\%03o", key);
sprintf (curval, "%10.3f %10.3f %d %s %s\n",
wx, wy, wcscode, keystr, strval);
}
if (iis_debug) fprintf (stderr, "curval: %s", curval);
/* Send it to the client program and terminate cursor mode. */
chan_write (dataout, curval, sizeof(curval));
xim_cursorMode (xim, 0);
xim->cursor_chan = NULL;
}
/* XIM_ENCODEWCS -- Transform the input screen (raster) coordinates and
* pixel value and return a string giving X, Y, and the pixel intensity in
* world units.
*/
void xim_encodewcs (XimDataPtr xim, float sx, float sy, int sz, char* obuf)
{
CtranPtr ct;
MappingPtr mp = (MappingPtr) NULL;
float wx, wy, wz;
int i=0, ch, map_found = 0;
char buf[SZ_LINE];
/* The first time we're called get the address of the wcspix
* connected flag so we can check whether to get screen pixel
* or real-image values.
*/
if (wcspix_enabled == NULL) {
IsmModule ism;
extern ismModule ism_modules[];
extern int ism_nmodules;
for (i=0; i < ism_nmodules; i++) {
ism = &ism_modules[i];
if (strcmp ("wcspix", ism->name) == 0)
wcspix_enabled = &(ism->connected);
}
}
/* Now lookup the coordinate mapping and update the WCS and real
* pixel value if the ISM is running.
*/
if (wcspix_enabled != NULL && *wcspix_enabled) {
if ((mp = xim_getMapping (xim, sx+1.0, sy, xim->display_frame))) {
ct = &(mp->ctran);
sx -= 0.5;
sy -= 0.5;
wx = ct->a * sx + ct->c * sy + ct->tx;
wy = ct->b * sx + ct->d * sy + ct->ty;
/* Found the image mapping so request the WCS
* and pixel information from the WPIX ISM.
*/
/* if (mp->ref != NULL) {*/
sprintf (buf, "wcstran %d %g %g\n", mp->id, wx, wy);
ism_message (xim, "wcspix", buf);
/* }*/
map_found++;
}
}
ct = wcs_update (xim, xim->df_p);
if (ct->valid) {
/* The imtool WCS assumes that the center of the first display
* pixel is at (0,0) but actually it is at (0.5,0.5).
*/
wx = ct->a * sx + ct->c * sy + ct->tx;
wy = ct->b * sx + ct->d * sy + ct->ty;
if (sz == 0)
wz = 0.0;
else {
switch (ct->zt) {
case W_LINEAR:
wz = ((sz - CMS_DATASTART) * (ct->z2 - ct->z1) /
(CMS_DATARANGE-1)) + ct->z1;
break;
default:
wz = sz;
break;
}
}
} else {
wx = sx;
wy = sy;
wz = sz;
}
ch = ' ';
if (sz && ct->valid) {
if (ct->z1 < ct->z2) {
if (wz < (ct->z1 + 0.01))
ch = '-';
else if (wz > (ct->z2 - 0.01))
ch = '+';
} else if (ct->z1 > ct->z2) {
if (wz < (ct->z2 + 0.01))
ch = '-';
else if (wz > (ct->z1 - 0.01))
ch = '+';
}
}
sprintf (obuf, ct->format, wx + 0.005, wy + 0.005, wz, ch);
}
/* XIM_GETMAPPING -- Return the mapping struct for the given screen coords.
*/
static MappingPtr xim_getMapping(XimDataPtr xim, float sx, float sy, int frame)
{
FrameBufPtr fb = (FrameBufPtr) NULL;
MappingPtr mp = (MappingPtr) NULL;
int j,i=0;
float y = xim->height - sy;
int map_debug = 0;
/* Loop through the frame buffers until we find the current one.
* The mappings aren't stored in the display fb so we need to
* search.
*/
for (j=0; j < xim->nframes; j++) {
fb = &xim->frames[j];
if (frame == fb->frameno) {
/* Got the right frame, now search for mappings on this
* frame which intersect the screen coords. We assume there
* are no overlapping image mappings.
*/
for (i=0; i < fb->nmaps; i++) {
mp = &fb->mapping[i];
if (map_debug) {
printf ("sx=%.2f sy=%.2f / %.2f --> ", sx, sy, y);
printf ("mp->dx=%d+%d=%d mp->dy=%d+%d=%d",
mp->dx, mp->dnx, mp->dx+mp->dnx,
mp->dy, mp->dny, mp->dy+mp->dny);
}
if ((sx >= mp->dx && sx <= (mp->dx + mp->dnx)) &&
( y >= mp->dy && y <= (mp->dy + mp->dny))) {
if (map_debug) printf (" YES\n");
return (mp);
}
if (map_debug) printf (" NO\n");
}
}
}
return ((MappingPtr) NULL);
}
/* XIM_FRAMELABEL -- Return a pointer to the frame label string for the current
* frame.
*/
char* xim_frameLabel(XimDataPtr xim)
{
FrameBufPtr df_p = xim->df_p;
sprintf (df_p->label, "[%d] %s", df_p->frameno, df_p->ctran.imtitle);
return (df_p->label);
}
/* WCS_UPDATE -- Load the screen WCS, if not yet validated, from the user
* wcs file, if any.
*
* File format (two lines):
*
* image title (imtool header label string)\n
* a b c d tx ty z1 z2 zt
*
* The WCS text is passed in via the data stream as a write to the subunit
* WCS and left in the buffer "wcsbuf". Mapping information is parsed
* elsewhere if needed, our only purpose here is to extract the frame WCS.
*/
static CtranPtr wcs_update(XimDataPtr xim, FrameBufPtr fr)
{
CtranPtr ct = &fr->ctran;
char buf[1024], *format;
/* Get the new WCS. */
if (!ct->valid) {
fr->label[0] = '\0';
ct->zt = W_UNITARY;
/* Attempt to read the WCS and set up a unitary transformation
* if the information cannot be read.
*/
if (sscanf (fr->wcsbuf, "%[^\n]\n%f%f%f%f%f%f%f%f%d",
buf, &ct->a, &ct->b, &ct->c, &ct->d, &ct->tx, &ct->ty,
&ct->z1, &ct->z2, &ct->zt) < 7) {
if (fr->wcsbuf[0])
fprintf (stderr, "ximtool: error decoding WCS\n");
strncpy (ct->imtitle, "[NO WCS]\n", SZ_IMTITLE);
ct->a = ct->d = 1;
ct->b = ct->c = 0;
ct->tx = ct->ty = 0;
ct->zt = W_UNITARY;
} else
/*** waj ***/
xim_wcs(fr->frameno, ct->a, ct->b, ct->c, ct->d,
ct->tx, ct->ty, ct->z1, ct->z2, ct->zt);
/*** waj ***/
strncpy (ct->imtitle, buf, SZ_IMTITLE);
ct->valid++;
}
/* Determine best format for wcs output. */
if (ct->valid && ct->zt == W_LINEAR) {
float z1, z2, zrange;
z1 = ct->z1;
z2 = ct->z2;
zrange = (z1 > z2) ? z1 - z2 : z2 - z1;
if (zrange < 0.01 || (abs(z1) + abs(z2)) / 2.0 < 0.01)
format = " %7.2f %7.2f %9.3g%c";
else if (zrange < 100.0 && (abs(z1) + abs(z2)) / 2.0 < 200.0)
format = " %7.2f %7.2f %7.3f%c";
else if (zrange > 99999.0 || (abs(z1) + abs(z2)) / 2.0 > 99999.0)
format = " %7.2f %7.2f %9.3g%c";
else
format = W_DEFFORMAT;
} else
format = " %7.2f %7.2f %7.0f%c";
strcpy (ct->format, format);
return (ct);
}
/* ADD_MAPPING -- Add a mapping for the current frame.
*
* File format (two lines):
*
* image title (imtool header label string)\n
* a b c d tx ty z1 z2 zt \n
* region_name sx sy snx sny dx dy dnx dny\n
* object_ref
*
* The WCS text is passed in via the data stream as a write to the subunit
* WCS and left in the buffer "wcsbuf". Mapping information is parsed
* elsewhere if needed, our only purpose here is to extract the frame WCS.
*/
static void add_mapping (XimDataPtr xim, CtranPtr ctran, char* wcsbuf, FrameBufPtr fr)
{
MappingPtr mp = &fr->mapping[fr->nmaps];
CtranPtr ct = &mp->ctran;
int i, j, frame = fr->frameno;
char buf[SZ_WCSBUF];
/* Attempt to read the WCS and set up a unitary transformation
* if the information cannot be read.
*/
if (sscanf (wcsbuf, "%[^\n]\n%f%f%f%f%f%f%f%f%d",
buf, &ct->a, &ct->b, &ct->c, &ct->d, &ct->tx, &ct->ty,
&ct->z1, &ct->z2, &ct->zt) < 7) {
if (wcsbuf[0])
fprintf (stderr, "ximtool: error decoding WCS\n");
strncpy (ct->imtitle, "[NO WCS]\n", SZ_IMTITLE);
ct->a = ct->d = 1;
ct->b = ct->c = 0;
ct->tx = ct->ty = 0;
ct->zt = W_UNITARY;
} else
strncpy (ct->imtitle, buf, SZ_IMTITLE);
ct->valid = 1;
/* Skip over the first two lines of WCS data.
*/
strcpy (buf, wcsbuf);
for (i=0, j=0; j < 2 && buf[i]; i++)
if (buf[i] == '\n')
j++;
/* Attempt to read the mapping.
*/
mp->regid = (++objid[frame-1]) + (frame * 100);
mp->id = mp->regid;
mp->ref[0] = '\0';
mp->region[0] = '\0';
if (sscanf (&buf[i], "%s%f%f%d%d%d%d%d%d\n%s\n",
mp->region, &mp->sx, &mp->sy, &mp->snx, &mp->sny,
&mp->dx, &mp->dy, &mp->dnx, &mp->dny, mp->ref) < 10) {
if (!wcsbuf[0])
fprintf (stderr, "ximtool: error decoding WCS mapping\n");
strncpy (mp->region, "none", SZ_IMTITLE);
strncpy (mp->ref, "none", SZ_IMTITLE);
mp->sx = 1.0;
mp->sy = 1.0;
mp->snx = xim->width;
mp->sny = xim->height;
mp->dx = 1;
mp->dy = 1;
mp->dnx = xim->width;
mp->dny = xim->height;
}
memmove (ctran, &mp->ctran, sizeof (Ctran));
/* Tell the ISM to cache this mapping if we have an object ref. */
sprintf (buf, "cache %s %d", mp->ref, mp->id);
ism_message (xim, "wcspix", buf);
sprintf (buf, "wcslist %d", mp->id);
ism_message (xim, "wcspix", buf);
/* Send the object ref to the GUI. */
sprintf (buf, "cache %s %d %d", mp->ref, fr->frameno, mp->id);
wcspix_message (xim, buf);
sprintf (buf, "orient %d %d %d %d",
mp->id, fr->frameno, (int)ctran->a, (int)(-1 * ctran->d));
wcspix_message (xim, buf);
fr->nmaps++;
/* Debug the mappings. */
if (getenv("DEBUG_MAPPINGS") != NULL) print_mappings (fr);
}
/* PRINT_MAPPINGS -- Debug routine to print all mappings on a frame.
*/
static void print_mappings(FrameBufPtr fr)
{
MappingPtr mp;
int i;
if (fr->nmaps == 0) printf ("No mappings for frame %d\n", fr->frameno);
for (i=0; i < fr->nmaps; i++) {
mp = &fr->mapping[i];
printf ("Mapping %d of %d: id=%d frame=%d:\n",
i+1, fr->nmaps, mp->id, fr->frameno);
printf ("\t%s %f %f %d %d %d %d %d %d\n\t%s\n",
mp->region, mp->sx, mp->sy, mp->snx, mp->sny,
mp->dx, mp->dy, mp->dnx, mp->dny, mp->ref);
}
}
/* CHAN_READ -- Read exactly "n" bytes from a descriptor.
*/
static int chan_read(int fd, void* vptr, int nbytes)
{
char *ptr = vptr;
int nread = 0, nleft = nbytes, nb = 0;
while (nleft > 0) {
#ifdef __WIN32
if ( (nb = recv(fd, ptr, nleft, 0)) < 0) {
if (WSAGetLastError() == WSAEINTR)
#else
if ( (nb = read(fd, ptr, nleft)) < 0) {
if (errno == EINTR)
#endif
nb = 0; /* and call read() again */
else
return(-1);
} else if (nb == 0)
break; /* EOF */
nleft -= nb;
ptr += nb;
nread += nb;
}
return (nread); /* return no. of bytes read */
}
/* CHAN_WRITE -- Write exactly "n" bytes to a descriptor.
*/
static int chan_write (int fd, void* vptr, int nbytes)
{
char *ptr = vptr;
int nwritten = 0, nleft = nbytes, nb = 0;
while (nleft > 0) {
#ifdef __WIN32
if ( (nb = send(fd, ptr, nleft, 0)) <= 0) {
if (WSAGetLastError() == WSAEINTR)
#else
if ( (nb = write(fd, ptr, nleft)) <= 0) {
if (errno == EINTR)
#endif
nb = 0; /* and call write() again */
else
return(-1); /* error */
}
nleft -= nb;
ptr += nb;
nwritten += nb;
}
return (nwritten);
}
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