struct fqz {
public:

    fqz();
    fqz(fqz_params *p);
    ~fqz();

    int encode(int in_fd, int out_fd);
    int decode(int in_fd, int out_fd);

}

##</code><code>##

my $fh = Compress::FQZ::Reader->new($fn);

while (<$fh>) {
    # ...
}

my $fh = Compress::FQZ::Writer->new($fn);

while ($foo) {
    print {$fh} $bar;
}