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PulseAudio: Audio Streams - freedesktop.org
https://freedesktop.org/software/pulseaudio/doxygen/streams.html
In case of a buffer underrun the read index is equal or larger than the write index. Unless the prebuf value is 0, PulseAudio will temporarily pause playback in such a case, and wait until the buffer is filled up to prebuf bytes again. If prebuf is 0, the read index may be larger than the write index, in which case silence is played.
Music Stutters, PulseAudio Stream Underflow
https://forum.kodi.tv/showthread.php?tid=157095
By debug log shows a repeated PulseAudio warning of "stream underflow" the entire time I am trying to play the music. I am assuming the problem may have something to do with the buffers. I have no clue where to start, so I turned to the forums for some help. Any help will be greatly appreciated! I am a new member and this is my first post, so ...
PulseAudio: stream.h File Reference - freedesktop.org
https://freedesktop.org/software/pulseaudio/doxygen/stream_8h.html
Change the buffer metrics of the stream during playback. The server might have chosen different buffer metrics than requested. The selected metrics may be queried with pa_stream_get_buffer_attr() as soon as the callback is called. Only valid after the stream has been connected successfully and if the server is at least PulseAudio 0.9.8.
Async Playback – Developer Documentation – PulseAudio
https://www.freedesktop.org/wiki/Software/PulseAudio/Documentation/Developer/Clients/Samples/AsyncPlayback/
This code is not made by any PulseAudio developer. It may not be best practice, but it seems to work and could be used as a start for a playback application that uses the async API. This simple application plays a constant note and uses a low latency setup (20 ms) that should be suitable for games.
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