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Added readdisplay() routine

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Jack Jansen 1993-02-16 09:25:15 +00:00
parent 852cc22bd3
commit 5fc677363f
1 changed files with 29 additions and 0 deletions
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29
Modules/cstubs
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@ -657,6 +657,35 @@ gl_lrectread(self, args)
return parray;
}
% readdisplay
static object *
gl_readdisplay(self, args)
object *self;
object *args;
{
short x1, y1, x2, y2;
unsigned long *parray, hints;
long size, size_ret;
object *rv;
if ( !getargs(args, "hhhhl", &x1, &y1, &x2, &y2, &hints) )
return 0;
size = (long)(x2+1-x1) * (long)(y2+1-y1);
rv = newsizedstringobject((char *)NULL, size*sizeof(long));
if ( rv == NULL )
return NULL;
parray = (unsigned long *)getstringvalue(rv);
size_ret = readdisplay(x1, y1, x2, y2, parray, hints);
if ( size_ret != size ) {
printf("gl_readdisplay: got %d pixels, expected %d\n",
size_ret, size);
err_setstr(RuntimeError, "readdisplay returned unexpected length");
return NULL;
}
return rv;
}
/* Desperately needed, here are tools to compress and decompress
the data manipulated by lrectread/lrectwrite.