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/* Copyright (c) 1988 Regents of the University of California */ |
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|
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#ifndef lint |
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static char SCCSid[] = "$SunId$ LBL"; |
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static const char RCSid[] = "$Id$"; |
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#endif |
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|
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/* |
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* devcomm.c - communication routines for separate drivers. |
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* |
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* 10/5/88 |
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* External symbols declared in driver.h |
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*/ |
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|
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#include <stdio.h> |
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/* ==================================================================== |
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* The Radiance Software License, Version 1.0 |
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* |
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* Copyright (c) 1990 - 2002 The Regents of the University of California, |
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* through Lawrence Berkeley National Laboratory. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* |
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* 3. The end-user documentation included with the redistribution, |
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* if any, must include the following acknowledgment: |
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* "This product includes Radiance software |
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* (http://radsite.lbl.gov/) |
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* developed by the Lawrence Berkeley National Laboratory |
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* (http://www.lbl.gov/)." |
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* Alternately, this acknowledgment may appear in the software itself, |
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* if and wherever such third-party acknowledgments normally appear. |
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* |
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* 4. The names "Radiance," "Lawrence Berkeley National Laboratory" |
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* and "The Regents of the University of California" must |
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* not be used to endorse or promote products derived from this |
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* software without prior written permission. For written |
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* permission, please contact [email protected]. |
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* |
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* 5. Products derived from this software may not be called "Radiance", |
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* nor may "Radiance" appear in their name, without prior written |
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* permission of Lawrence Berkeley National Laboratory. |
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* |
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* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED |
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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* DISCLAIMED. IN NO EVENT SHALL Lawrence Berkeley National Laboratory OR |
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF |
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* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, |
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT |
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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* ==================================================================== |
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* |
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* This software consists of voluntary contributions made by many |
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* individuals on behalf of Lawrence Berkeley National Laboratory. For more |
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* information on Lawrence Berkeley National Laboratory, please see |
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* <http://www.lbl.gov/>. |
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*/ |
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|
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< |
#include <signal.h> |
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#include "standard.h" |
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|
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#include "color.h" |
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|
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#include "driver.h" |
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|
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+ |
#include "vfork.h" |
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+ |
|
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#ifndef DEVPATH |
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#define DEVPATH getenv("PATH") /* device search path */ |
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#endif |
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|
79 |
< |
#ifndef BSD |
80 |
< |
#define vfork fork |
81 |
< |
#endif |
79 |
> |
static int comm_getcur(); |
80 |
> |
static void comm_close(), comm_clear(), comm_paintr(), |
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> |
comm_comin(), comm_comout(), comm_flush(); |
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|
|
83 |
< |
#ifndef WFLUSH |
30 |
< |
#define WFLUSH 30 /* flush after this many rays */ |
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< |
#endif |
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|
33 |
< |
extern char *getpath(), *getenv(); |
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|
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int onsigio(); |
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|
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< |
int comm_close(), comm_clear(), comm_paintr(), comm_errout(), |
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< |
comm_getcur(), comm_comout(), comm_comin(); |
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|
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struct driver comm_driver, comm_default = { |
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struct driver comm_driver = { |
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comm_close, comm_clear, comm_paintr, comm_getcur, |
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< |
comm_comout, comm_comin, |
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MAXRES, MAXRES, 0 |
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> |
comm_comout, comm_comin, comm_flush |
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}; |
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|
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+ |
static void mygets(), myputs(), reply_error(), getstate(); |
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|
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FILE *devin, *devout; |
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|
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int devchild; |
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|
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|
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static struct driver * |
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final_connect() /* verify and initialize connection */ |
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{ |
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putw(COM_SENDM, devout); |
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fflush(devout); |
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if (getw(devin) != COM_RECVM) |
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return(NULL); |
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/* get driver parameters */ |
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getstate(); |
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/* set error vectors */ |
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erract[COMMAND].pf = comm_comout; |
106 |
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if (erract[WARNING].pf != NULL) |
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erract[WARNING].pf = comm_comout; |
108 |
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return(&comm_driver); |
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} |
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|
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|
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struct driver * |
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comm_init(argv) /* set up and execute driver */ |
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char *argv[]; |
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slave_init(dname, id) /* run rview in slave mode */ |
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char *dname, *id; |
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{ |
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char *devname; |
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int p1[2], p2[2]; |
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devchild = -1; /* we're the slave here */ |
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devout = stdout; /* use standard input */ |
118 |
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devin = stdin; /* and standard output */ |
119 |
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return(final_connect()); /* verify initialization */ |
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} |
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|
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if ((devname = getpath(argv[0], DEVPATH, 1)) == NULL) { |
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stderr_v(argv[0]); |
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stderr_v(": not found\n"); |
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|
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struct driver * |
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comm_init(dname, id) /* set up and execute driver */ |
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char *dname, *id; |
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{ |
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char *dvcname; |
128 |
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int p1[2], p2[2]; |
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char pin[16], pout[16]; |
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/* find driver program */ |
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if ((dvcname = getpath(dname, DEVPATH, X_OK)) == NULL) { |
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eputs(dname); |
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eputs(": not found\n"); |
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return(NULL); |
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} |
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/* open communication pipes */ |
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if (pipe(p1) == -1 || pipe(p2) == -1) |
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goto syserr; |
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if ((devchild = vfork()) == 0) { |
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if ((devchild = vfork()) == 0) { /* fork driver process */ |
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close(p1[1]); |
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close(p2[0]); |
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if (p1[0] != 0) { |
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dup2(p1[0], 0); |
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close(p1[0]); |
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} |
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if (p2[1] != 1) { |
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dup2(p2[1], 1); |
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close(p2[1]); |
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} |
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execv(devname, argv); |
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stderr_v(devname); |
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stderr_v(": cannot execute\n"); |
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sprintf(pin, "%d", p1[0]); |
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sprintf(pout, "%d", p2[1]); |
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execl(dvcname, dname, pin, pout, id, 0); |
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perror(dvcname); |
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_exit(127); |
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} |
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if (devchild == -1) |
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goto syserr; |
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if ((devin = fdopen(p2[0], "r")) == NULL) |
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goto syserr; |
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bcopy(&comm_default, &comm_driver, sizeof(comm_driver)); |
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signal(SIGIO, onsigio); |
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cmdvec = comm_comout; /* set error vectors */ |
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if (wrnvec != NULL) |
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wrnvec = comm_comout; |
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return(&comm_driver); |
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return(final_connect()); /* verify initialization */ |
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syserr: |
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< |
perror(argv[0]); |
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> |
perror(dname); |
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return(NULL); |
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} |
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|
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|
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static |
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> |
static void |
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comm_close() /* done with driver */ |
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{ |
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int pid; |
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|
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< |
cmdvec = NULL; /* reset error vectors */ |
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if (wrnvec != NULL) |
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wrnvec = stderr_v; |
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signal(SIGIO, SIG_DFL); |
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erract[COMMAND].pf = NULL; /* reset error vectors */ |
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> |
if (erract[WARNING].pf != NULL) |
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> |
erract[WARNING].pf = wputs; |
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fclose(devout); |
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fclose(devin); |
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+ |
if (devchild < 0) |
174 |
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return; |
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while ((pid = wait(0)) != -1 && pid != devchild) |
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; |
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} |
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|
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|
|
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< |
static |
180 |
> |
static void |
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comm_clear(xres, yres) /* clear screen */ |
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int xres, yres; |
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{ |
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putc(COM_CLEAR, devout); |
185 |
< |
fwrite(&xres, sizeof(xres), 1, devout); |
186 |
< |
fwrite(&yres, sizeof(yres), 1, devout); |
185 |
> |
putw(xres, devout); |
186 |
> |
putw(yres, devout); |
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fflush(devout); |
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} |
189 |
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|
190 |
|
|
191 |
< |
static |
191 |
> |
static void |
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comm_paintr(col, xmin, ymin, xmax, ymax) /* paint a rectangle */ |
193 |
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COLOR col; |
194 |
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int xmin, ymin, xmax, ymax; |
195 |
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{ |
133 |
– |
extern long nrays; /* number of rays traced */ |
134 |
– |
static long lastflush = 0; /* ray count at last flush */ |
135 |
– |
|
196 |
|
putc(COM_PAINTR, devout); |
197 |
< |
fwrite(col, sizeof(COLOR), 1, devout); |
198 |
< |
fwrite(&xmin, sizeof(xmin), 1, devout); |
199 |
< |
fwrite(&ymin, sizeof(ymin), 1, devout); |
200 |
< |
fwrite(&xmax, sizeof(xmax), 1, devout); |
201 |
< |
fwrite(&ymax, sizeof(ymax), 1, devout); |
142 |
< |
if (nrays - lastflush >= WFLUSH) { |
143 |
< |
fflush(devout); |
144 |
< |
lastflush = nrays; |
145 |
< |
} |
197 |
> |
fwrite((char *)col, sizeof(COLOR), 1, devout); |
198 |
> |
putw(xmin, devout); |
199 |
> |
putw(ymin, devout); |
200 |
> |
putw(xmax, devout); |
201 |
> |
putw(ymax, devout); |
202 |
|
} |
203 |
|
|
204 |
|
|
205 |
+ |
static void |
206 |
+ |
comm_flush() /* flush output to driver */ |
207 |
+ |
{ |
208 |
+ |
putc(COM_FLUSH, devout); |
209 |
+ |
fflush(devout); |
210 |
+ |
if (getc(devin) != COM_FLUSH) |
211 |
+ |
reply_error("flush"); |
212 |
+ |
getstate(); |
213 |
+ |
} |
214 |
+ |
|
215 |
+ |
|
216 |
|
static int |
217 |
|
comm_getcur(xp, yp) /* get and return cursor position */ |
218 |
|
int *xp, *yp; |
224 |
|
if (getc(devin) != COM_GETCUR) |
225 |
|
reply_error("getcur"); |
226 |
|
c = getc(devin); |
227 |
< |
fread(xp, sizeof(*xp), 1, devin); |
228 |
< |
fread(yp, sizeof(*yp), 1, devin); |
227 |
> |
*xp = getw(devin); |
228 |
> |
*yp = getw(devin); |
229 |
|
return(c); |
230 |
|
} |
231 |
|
|
232 |
|
|
233 |
< |
static |
233 |
> |
static void |
234 |
|
comm_comout(str) /* print string to command line */ |
235 |
|
char *str; |
236 |
|
{ |
237 |
|
putc(COM_COMOUT, devout); |
238 |
|
myputs(str, devout); |
239 |
< |
fflush(devout); |
239 |
> |
if (str[strlen(str)-1] == '\n') |
240 |
> |
fflush(devout); |
241 |
|
} |
242 |
|
|
243 |
|
|
244 |
< |
static |
245 |
< |
comm_comin(buf) /* read string from command line */ |
244 |
> |
static void |
245 |
> |
comm_comin(buf, prompt) /* read string from command line */ |
246 |
|
char *buf; |
247 |
+ |
char *prompt; |
248 |
|
{ |
249 |
|
putc(COM_COMIN, devout); |
250 |
+ |
if (prompt == NULL) |
251 |
+ |
putc(0, devout); |
252 |
+ |
else { |
253 |
+ |
putc(1, devout); |
254 |
+ |
myputs(prompt, devout); |
255 |
+ |
} |
256 |
|
fflush(devout); |
257 |
|
if (getc(devin) != COM_COMIN) |
258 |
|
reply_error("comin"); |
259 |
|
mygets(buf, devin); |
260 |
< |
comm_driver.inpready = 0; |
260 |
> |
getstate(); |
261 |
|
} |
262 |
|
|
263 |
|
|
264 |
< |
static |
190 |
< |
comm_errout(str) /* display an error message */ |
191 |
< |
char *str; |
192 |
< |
{ |
193 |
< |
comm_comout(str); |
194 |
< |
stderr_v(str); /* send to standard error also */ |
195 |
< |
} |
196 |
< |
|
197 |
< |
|
198 |
< |
static |
264 |
> |
static void |
265 |
|
mygets(s, fp) /* get string from file (with nul) */ |
266 |
|
register char *s; |
267 |
|
register FILE *fp; |
275 |
|
} |
276 |
|
|
277 |
|
|
278 |
< |
static |
278 |
> |
static void |
279 |
|
myputs(s, fp) /* put string to file (with nul) */ |
280 |
|
register char *s; |
281 |
|
register FILE *fp; |
286 |
|
} |
287 |
|
|
288 |
|
|
289 |
< |
static |
289 |
> |
static void |
290 |
|
reply_error(routine) /* what should we do here? */ |
291 |
|
char *routine; |
292 |
|
{ |
293 |
< |
stderr_v(routine); |
294 |
< |
stderr_v(": driver reply error\n"); |
293 |
> |
eputs(routine); |
294 |
> |
eputs(": driver reply error\n"); |
295 |
|
quit(1); |
296 |
|
} |
297 |
|
|
298 |
|
|
299 |
< |
static |
300 |
< |
onsigio() /* input ready */ |
299 |
> |
static void |
300 |
> |
getstate() /* get driver state variables */ |
301 |
|
{ |
302 |
< |
comm_driver.inpready++; |
302 |
> |
fread((char *)&comm_driver.pixaspect, |
303 |
> |
sizeof(comm_driver.pixaspect), 1, devin); |
304 |
> |
comm_driver.xsiz = getw(devin); |
305 |
> |
comm_driver.ysiz = getw(devin); |
306 |
> |
comm_driver.inpready = getw(devin); |
307 |
|
} |