+ aout_sys_t *sys = aout->sys;
+ pa_operation *op;
+
+ if (sys->trigger != NULL) {
+ vlc_pa_rttime_free(sys->trigger);
+ sys->trigger = NULL;
+ }
+
+ op = pa_stream_cork(s, 0, NULL, NULL);
+ if (op != NULL)
+ pa_operation_unref(op);
+ op = pa_stream_trigger(s, NULL, NULL);
+ if (likely(op != NULL))
+ pa_operation_unref(op);
+}
+
+static void stream_stop(pa_stream *s, audio_output_t *aout)
+{
+ aout_sys_t *sys = aout->sys;
+ pa_operation *op;
+
+ if (sys->trigger != NULL) {
+ vlc_pa_rttime_free(sys->trigger);
+ sys->trigger = NULL;
+ }
+
+ op = pa_stream_cork(s, 1, NULL, NULL);
+ if (op != NULL)
+ pa_operation_unref(op);
+}
+
+static void stream_trigger_cb(pa_mainloop_api *api, pa_time_event *e,
+ const struct timeval *tv, void *userdata)
+{
+ audio_output_t *aout = userdata;
+ aout_sys_t *sys = aout->sys;
+
+ msg_Dbg(aout, "starting deferred");
+ assert (sys->trigger == e);
+ stream_start(sys->stream, aout);
+ (void) api; (void) e; (void) tv;
+}
+
+/**
+ * Starts or resumes the playback stream.
+ * Tries start playing back audio samples at the most accurate time
+ * in order to minimize desync and resampling during early playback.
+ * @note PulseAudio lock required.
+ */
+static void stream_resync(audio_output_t *aout, pa_stream *s)
+{
+ aout_sys_t *sys = aout->sys;
+ mtime_t delta;
+
+ assert (pa_stream_is_corked(s) > 0);
+ assert (sys->pts != VLC_TS_INVALID);
+
+ delta = vlc_pa_get_latency(aout, sys->context, s);
+ if (unlikely(delta == VLC_TS_INVALID))
+ delta = 0; /* screwed */
+
+ delta = (sys->pts - mdate()) - delta;
+ if (delta > 0) {
+ if (sys->trigger == NULL) {
+ msg_Dbg(aout, "deferring start (%"PRId64" us)", delta);
+ delta += pa_rtclock_now();
+ sys->trigger = pa_context_rttime_new(sys->context, delta,
+ stream_trigger_cb, aout);
+ }
+ } else {
+ msg_Warn(aout, "starting late (%"PRId64" us)", delta);
+ stream_start(s, aout);