- if (pawd)
- pthread_mutex_lock(&pawd->mutex);
- ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
- if (pawd)
- pthread_mutex_unlock(&pawd->mutex);
-
- if (ret == 0) {
- /*
- * Even though the node status is zero, we might have data
- * available, but the output buffer is full. If we don't set a
- * timeout here, we are woken up only if new data arrives,
- * which might be too late and result in a buffer underrun in
- * the playing thread. To avoid this we never sleep longer than
- * the (default) buffer time.
- */
- return sched_request_timeout_ms(20, s);
+ if (!pawd) { /* not yet started */
+ assert(wn->btrn);
+ ret = btr_node_status(wn->btrn, wn->min_iqs, BTR_NT_LEAF);
+ if (ret != 0)
+ goto min_delay;
+ return; /* no data available */
+ }
+ if (!wn->btrn) { /* EOF */
+ if (!pawd->thread_btrn) /* ready to exit */
+ goto min_delay;
+ /* wait for the play thread to terminate */
+ goto timeout;