[pulseaudio-tickets] [Bug 96361] [NEED]Try recover from snd_pcm_avail() -EPIPE

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=96361

--- Comment #2 from Raymond <superquad.vortex2 at gmail.com> ---
http://www.google.com/patents/US20100131783

Whenever the amount of stream data in the FIFO is less than 128 bytes (i.e.,
the threshold), the HDAC 15 will issue a bus mater cycle. As each frame is
transported in an interval time of 20.83 micro second (μs) (=1/(48×103)), which
is regarded as a “time unit of transportation,” the 128 bytes therefore can
keep 32 frames (=128/4) of data for about 666 micro second (=32×20.83) without
under run.


https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa?id=4df443bbe682055a41e7c2248877dcc7682a69b8

#define DEFAULT_REWIND_SAFEGUARD_BYTES (256) /* 1.33ms @48kHz, should work for
most hardware */
+

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