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. Please be aware of the
* slightly different semantics of the call depending whether
* PA_STREAM_ADJUST_LATENCY is set or not. \since 0.9.8
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. Please be aware of the * slightly different semantics of the call depending whether * PA_STREAM_ADJUST_LATENCY is set or not. \since 0.9.8