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-rw-r--r--src/pulse/stream.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/src/pulse/stream.h b/src/pulse/stream.h
index cb8b74dc..8a08421f 100644
--- a/src/pulse/stream.h
+++ b/src/pulse/stream.h
@@ -512,7 +512,9 @@ size_t pa_stream_writable_size(pa_stream *p);
/** Return the number of bytes that may be read using pa_stream_peek()*/
size_t pa_stream_readable_size(pa_stream *p);
-/** Drain a playback stream. Use this for notification when the buffer is empty */
+/** Drain a playback stream. Use this for notification when the buffer
+ * is empty. Please note that only one drain operation per stream may
+ * be issued at a time. */
pa_operation* pa_stream_drain(pa_stream *s, pa_stream_success_cb_t cb, void *userdata);
/** Request a timing info structure update for a stream. Use