Listing 1. x10codes Function in gpm.c
static int x10codes( char *data )
{
static int nCode, nPrevCode = 0;
static int fd = 0;
static struct timeval tv1={0,0}, tv2;
if( (data[0] >= 0x44) && (data[0]<=0x47) &&
(data[2]==0x3f) )
{
/* X10 Mouse Remote *may* be activated! */
/* printf("%02X %02X %02X %02X \n",
data[0], data[1], data[2], data[3] ); */
/* Assign the action code and the current
time */
nCode = ((int)data[0])*256+data[1];
GET_TIME(tv2);
/* If the code is the same as the last one,
for some codes do not allow immediate
repetition */
if( (nCode!=X10_VOLUP) && (nCode!=X10_VOLDOWN)
&& (nCode==nPrevCode)
&& (DIF_TIME(tv1,tv2)<opt_time) );
else {
/* Open the pipe to write. Since the reader
is creating it, this will fail if the
reader is not ready to accept codes */
if(!fd) fd = open("/dev/x10", O_WRONLY );
if( fd > 0 )
{
/* Great! Pipe is there and we can
write to it */
write(fd, &nCode, sizeof(int) );
}
}
tv1 = tv2;
nPrevCode = nCode;
/* Return non-zero to avoid further
processing */
return( 1 );
}
return( 0 );
}
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