<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NEED]Try recover from snd_pcm_avail() -EPIPE" href="https://bugs.freedesktop.org/show_bug.cgi?id=96361#c2">Comment # 2</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NEED]Try recover from snd_pcm_avail() -EPIPE" href="https://bugs.freedesktop.org/show_bug.cgi?id=96361">bug 96361</a> from <a class="email" href="mailto:superquad.vortex2@gmail.com" title="Raymond <superquad.vortex2@gmail.com>"> Raymond</a> <pre><a href="http://www.google.com/patents/US20100131783">http://www.google.com/patents/US20100131783</a> 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. <a href="https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa?id=4df443bbe682055a41e7c2248877dcc7682a69b8">https://cgit.freedesktop.org/pulseaudio/pulseaudio/commit/src/modules/alsa?id=4df443bbe682055a41e7c2248877dcc7682a69b8</a> #define DEFAULT_REWIND_SAFEGUARD_BYTES (256) /* 1.33ms @48kHz, should work for most hardware */ +</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>