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#!/usr/bin/perl
use strict;
use warnings;
use IPC::Open2;
use POSIX ":sys_wait_h";
my ($send_src, $send_sink);
my $send_pid = open2($send_src, $send_sink, './spandsp_send_fax_pcm test.tif') or die;
unlink('out.tif');
my ($recv_src, $recv_sink);
my $recv_pid = open2($recv_src, $recv_sink, './spandsp_recv_fax_pcm out.tif') or die;
while ($send_pid && $recv_pid) {
my $buf;
if (sysread($send_src, $buf = '', 160)) {
syswrite($recv_sink, $buf) or die;
}
if (sysread($recv_src, $buf = '', 160)) {
syswrite($send_sink, $buf) or die;
}
undef($send_pid) if waitpid($send_pid, WNOHANG);
undef($recv_pid) if waitpid($recv_pid, WNOHANG);
}
sleep(5);
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