On Mon, 2010-01-18 at 17:53 +0100, Lennart Poettering wrote: > On Mon, 18.01.10 16:36, Grzegorz Kryza (gkryza at gmail.com) wrote: > > > > > This can be done using 'module-pipe-source' but it was recently removed > > > > from Fedora packages so I'm looking for alternative. > > > > > > This won't work, since that device does not really provide any kind of > > > timing control, and also also depends on apps on the other side > > > read/write data in the right speed. It's mostly a toy. > > > > Yes, but if a timing is done by a process on other side of a pipe? > > We have already implemented a solution based on pipe sink/source which > > takes care about providing a data in correct sample rate, format, etc. > > It works well on all Linux distros with PA we tested except Fedora > > 12. > > If you do that you need to make sure you provide an interface for the > PA server to query the latency synchronously with the data > transferred. Note that most video players schedule frames based on the > audio clock, so if the latency estimation is not smooth and dependable > video playback will be jumpy. Thanks for interesting info. However if a audio/video synchronization is not needed, for example in case of virtual microphone? There are other drawbacks of using pipe sink/source? Especially if it actually works in our case. > module-pipe-sink/-source do not provide that. > > Lennart >
