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/* gcc -g -o foo event.body.c -lm */
#ifdef TEST
#include <math.h>
#define EVFILTRTN _FilterEvents
#define NSHAPE 1
#define NREGION 1
#define _X_ X
#define _Y_ Y
#define FILTER ((circle(g,1,1,1,_X_,_Y_,1,2,3)))
#define EVSIZE 4
#define X *((short *)(eptr+0))
#define Y *((short *)(eptr+2))
#include "regions.h"
#endif
static char __abuf[EVSIZE+1];
static char *acopy(void *s, int n)
{
memset(__abuf, 0, n+1);
memmove(__abuf, s, n);
return __abuf;
}
void *EVFILTRTN(void *tg, char *ebuf, int ne, int esize, int *rbuf)
{
int i, j;
int *rptr;
char *eptr;
Scan scan, tscan;
GFilt g = (GFilt)tg;
/* set eptr to ebuf -- this must be done before FINIT, because the latter */
/*passes X and Y to shape init routines, and these defines use eptr */
eptr = ebuf;
if( !g ){
g = (GFilt)calloc(1, sizeof(GFiltRec));
#if NSHAPE
/* allocate space for the globals */
g->nshapes = NSHAPE;
g->maxshapes = (NSHAPE*(XSNO+1))+1;
g->shapes = (Shape)calloc(g->maxshapes, sizeof(ShapeRec));
#endif
#ifdef EVSECT
/* if evsect is defined, we are filtering an image section */
g->evsect = EVSECT;
sscanf(g->evsect, "%d %d %d %d %d",
&g->xmin, &g->xmax, &g->ymin, &g->ymax, &g->block);
/* get x and y limits on subsection */
g->x0 = 1;
g->y0 = 1;
g->x1 = (g->xmax-g->xmin)/g->block+1;
g->y1 = (g->ymax-g->ymin)/g->block+1;
/* allocate a buffer for valid y row flags */
g->ybuf = (int *)calloc(g->y1+1, sizeof(int));
g->x0s = (int *)calloc(g->y1+1, sizeof(int));
g->x1s = (int *)calloc(g->y1+1, sizeof(int));
/* seed impossible values for x limits */
for(i=0; i<=g->y1; i++) g->x0s[i] = g->x0;
for(i=0; i<=g->y1; i++) g->x1s[i] = g->x1;
/* save image mask values */
if( NMASK ){
g->nmask = NMASK;
g->maskdim = MASKDIM;
g->masks = _masks;
}
/* initialize shapes -- but check to make sure eptr is OK */
#if DO_FILTER_SWAP
memset(_swf, 0, EVSIZE);
#endif
if( eptr ) FINIT;
/* these also must be defined if EVSECT is being used */
g->tlminx = TLMINX;
g->tlminy = TLMINY;
g->usebinsiz = USEBINSIZ;
if( BINSIZX > 0.0 )
g->binsizx = BINSIZX;
else
g->binsizx = 1.0;
if( BINSIZY > 0.0 )
g->binsizy = BINSIZY;
else
g->binsizy = 1.0;
g->tloff = TLOFF;
#endif
}
/* if we have negative events, we free the structs */
if( !ebuf && !rbuf && (ne<0) ){
#if NSHAPE
/* free polygon records */
for(i=0; i<g->maxshapes; i++){
if( g->shapes[i].scanlist ){
for(j=0; j<g->y1; j++){
if( g->shapes[i].scanlist[j] ){
for(scan=g->shapes[i].scanlist[j]; scan; ){
tscan = scan->next;
if( scan ) free(scan);
scan = tscan;
}
}
}
if( g->shapes[i].scanlist ) free(g->shapes[i].scanlist);
}
if( g->shapes[i].pts ) free(g->shapes[i].pts);
if( g->shapes[i].xv ) free(g->shapes[i].xv);
}
if( g->masks ) free(g->masks);
if( g->shapes ) free(g->shapes);
if( g->ybuf ) free(g->ybuf);
if( g->x0s ) free(g->x0s);
if( g->x1s ) free(g->x1s);
if( g ) free(g);
#endif
return NULL;
}
else{
/* do the filtering on each event */
for(rptr=rbuf, eptr=ebuf; ne--; rptr++, eptr += esize){
g->rid = 0;
#if DO_FILTER_SWAP
memset(_swf, 0, EVSIZE);
#endif
*rptr = ((FILTER) ? (g->rid ? g->rid : -1) : 0);
}
return (void *)g;
}
}
int main(int argc, char **argv)
{
int i;
#if HAVE_MINGW32==0
int pipes[4];
#endif
int get, got;
#if DO_FILTER_SWAP
int sgot;
#endif
int n;
int *rbuf;
char *ebuf, *etop;
char *s=NULL, *t=NULL, *u=NULL;
void *g=NULL;
#if USE_WIN32
HANDLE hStdin, hStdout;
DWORD dwRead, dwWritten;
#endif
/* Launch() sometimes rearranges passed pipes to be stdin/stdout */
#if HAVE_MINGW32==0
if( (s=getenv("LAUNCH_PIPES")) ){
t = (char *)strdup(s);
for(i=0, u=(char *)strtok(t, ","); i<4 && u;
i++, u=(char *)strtok(NULL,",")){
pipes[i] = atoi(u);
}
if( t ) free(t);
if( i < 4 ) return(1);
close(pipes[0]);
close(pipes[3]);
dup2(pipes[2], 0); close(pipes[2]);
dup2(pipes[1], 1); close(pipes[1]);
}
#endif
#if USE_WIN32
hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
hStdin = GetStdHandle(STD_INPUT_HANDLE);
if( (hStdout == INVALID_HANDLE_VALUE) || (hStdin == INVALID_HANDLE_VALUE) ){
unlink(argv[0]);
return 0;
}
#endif
/* read and filter events */
#if USE_WIN32
while((ReadFile(hStdin, &get, sizeof(int), &dwRead, NULL) >0) &&
(dwRead == sizeof(int)) ){
#else
while( read(0, &get, sizeof(int)) == sizeof(int) ){
#endif
#if DO_FILTER_SWAP
switch(sizeof(int)){
case 2:
_sw2((char *)&get,2,NULL,0);
break;
case 4:
_sw4((char *)&get,4,NULL,0);
break;
case 8:
_sw8((char *)&get,8,NULL,0);
break;
}
#endif
ebuf = (char *)calloc(get, sizeof(char));
#if USE_WIN32
for(n=0, etop=ebuf; get>0; etop += got, get -= dwRead){
if((ReadFile(hStdin, etop, get, &dwRead, NULL)==FALSE) || (dwRead==0))
break;
n += dwRead;
}
#else
for(n=0, etop=ebuf; get>0; etop += got, get -= got){
if( (got=read(0, etop, get)) <=0 )
break;
n += got;
}
#endif
n /= EVSIZE;
/* allocate return value buffer */
rbuf = (int *)calloc(n, sizeof(int));
/* filter events, with results going into rbuf */
g = EVFILTRTN(g, ebuf, n, EVSIZE, rbuf);
/* write results */
got = n*sizeof(int);
#if DO_FILTER_SWAP
sgot = got;
switch(sizeof(int)){
case 2:
_sw2((char *)&sgot,2,NULL,0);
break;
case 4:
_sw4((char *)&sgot,4,NULL,0);
break;
case 8:
_sw8((char *)&sgot,8,NULL,0);
break;
}
#if USE_WIN32
WriteFile(hStdout, &sgot, sizeof(int), &dwWritten, NULL);
#else
write(1, &sgot, sizeof(int));
#endif
#else
#if USE_WIN32
WriteFile(hStdout, &got, sizeof(int), &dwWritten, NULL);
#else
write(1, &got, sizeof(int));
#endif
#endif
#if DO_FILTER_SWAP
switch(sizeof(int)){
case 2:
_sw2((char *)rbuf,got,NULL,0);
break;
case 4:
_sw4((char *)rbuf,got,NULL,0);
break;
case 8:
_sw8((char *)rbuf,got,NULL,0);
break;
}
#endif
#if USE_WIN32
WriteFile(hStdout, rbuf, got, &dwWritten, NULL);
#else
write(1, rbuf, got);
#endif
if( ebuf) free(ebuf);
if( rbuf ) free(rbuf);
}
EVFILTRTN(g, NULL, -1, 0, NULL);
unlink(argv[0]);
return 0;
}
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