Function hb_fifo_see_wait

libhb/fifo.c:1323–1342

}

hb_buffer_t * hb_fifo_see_wait( hb_fifo_t * f )
{
    hb_buffer_t * b;

    hb_lock( f->lock );
    if( f->size < 1 )
    {
        f->wait_empty = 1;
        hb_cond_timedwait( f->cond_empty, f->lock, FIFO_TIMEOUT );
        if( f->size < 1 )
        {
            hb_unlock( f->lock );
            return NULL;
        }
    }
    b = f->first;
    hb_unlock( f->lock );

    return b;
}

// Returns the first packet in the specified FIFO.
// If the FIFO is empty, returns NULL.