12 |
|
|
13 |
|
#include "standard.h" |
14 |
|
|
15 |
– |
#include <signal.h> |
16 |
– |
|
15 |
|
#include "color.h" |
16 |
|
|
17 |
|
#include "driver.h" |
20 |
|
#define DEVPATH getenv("PATH") /* device search path */ |
21 |
|
#endif |
22 |
|
|
23 |
+ |
#ifndef DELAY |
24 |
+ |
#define DELAY 20 /* seconds to wait for response */ |
25 |
+ |
#endif |
26 |
+ |
|
27 |
|
#ifndef BSD |
28 |
|
#define vfork fork |
29 |
|
#endif |
78 |
|
goto syserr; |
79 |
|
if ((devin = fdopen(p2[0], "r")) == NULL) |
80 |
|
goto syserr; |
81 |
< |
/* verify & get resolution */ |
81 |
> |
/* verify initialization */ |
82 |
|
putw(COM_SENDM, devout); |
83 |
|
fflush(devout); |
84 |
|
if (getw(devin) != COM_RECVM) |
85 |
|
return(NULL); |
86 |
< |
fread((char *)&comm_driver.pixaspect, |
87 |
< |
sizeof(comm_driver.pixaspect), 1, devin); |
86 |
< |
comm_driver.xsiz = getw(devin); |
87 |
< |
comm_driver.ysiz = getw(devin); |
88 |
< |
/* input handling */ |
89 |
< |
signal(SIGIO, onsigio); |
86 |
> |
/* get driver parameters */ |
87 |
> |
comm_flush(); |
88 |
|
/* set error vectors */ |
89 |
|
cmdvec = comm_comout; |
90 |
|
if (wrnvec != NULL) |
104 |
|
cmdvec = NULL; /* reset error vectors */ |
105 |
|
if (wrnvec != NULL) |
106 |
|
wrnvec = stderr_v; |
109 |
– |
signal(SIGIO, SIG_DFL); |
107 |
|
fclose(devout); |
108 |
|
fclose(devin); |
109 |
|
while ((pid = wait(0)) != -1 && pid != devchild) |
141 |
|
{ |
142 |
|
putc(COM_FLUSH, devout); |
143 |
|
fflush(devout); |
144 |
+ |
if (getc(devin) != COM_FLUSH) |
145 |
+ |
reply_error("flush"); |
146 |
+ |
fread((char *)&comm_driver.pixaspect, |
147 |
+ |
sizeof(comm_driver.pixaspect), 1, devin); |
148 |
+ |
comm_driver.xsiz = getw(devin); |
149 |
+ |
comm_driver.ysiz = getw(devin); |
150 |
+ |
comm_driver.inpready = getw(devin); |
151 |
|
} |
152 |
|
|
153 |
|
|
174 |
|
{ |
175 |
|
putc(COM_COMOUT, devout); |
176 |
|
myputs(str, devout); |
173 |
– |
fflush(devout); |
177 |
|
} |
178 |
|
|
179 |
|
|
193 |
|
if (getc(devin) != COM_COMIN) |
194 |
|
reply_error("comin"); |
195 |
|
mygets(buf, devin); |
196 |
< |
if (comm_driver.inpready > 0) |
194 |
< |
comm_driver.inpready--; |
196 |
> |
comm_driver.inpready = getw(devin); |
197 |
|
} |
198 |
|
|
199 |
|
|
238 |
|
stderr_v(routine); |
239 |
|
stderr_v(": driver reply error\n"); |
240 |
|
quit(1); |
239 |
– |
} |
240 |
– |
|
241 |
– |
|
242 |
– |
static |
243 |
– |
onsigio() /* input ready */ |
244 |
– |
{ |
245 |
– |
comm_driver.inpready++; |
241 |
|
} |