Function hb_fifo_get_wait

libhb/fifo.c:1269–1296

Pulls the first packet out of this FIFO, blocking until such a packet is available. Returns NULL if this FIFO has been closed or flushed.

// Pulls the first packet out of this FIFO, blocking until such a packet is available.
// Returns NULL if this FIFO has been closed or flushed.
hb_buffer_t * hb_fifo_get_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;
    f->first  = b->next;
    b->next   = NULL;
    f->size  -= 1;
    if( f->wait_full && f->size == f->capacity - f->thresh )
    {
        f->wait_full = 0;
        hb_cond_signal( f->cond_full );
    }
    hb_unlock( f->lock );

    return b;
}

// Pulls a packet out of this FIFO, or returns NULL if no packet is available.
hb_buffer_t * hb_fifo_get( hb_fifo_t * f )