Colin Guthrie wrote: > 'Twas brillig, and Stefan Schoenleitner at 13/04/10 16:23 did gyre and > gimble: >> Hi, >> >> I finally managed to write an ALSA I/O plugin that does what I want. >> The plugin supports both playback and capture. >> >> Now I would like to write a simple audio application that takes audio >> samples >> >> * from the microphone and plays it back on my plugin >> and >> * from the plugin (capture) and plays it back on the speakers >> > > This sounds like something that would be more appropriate for jack > http://jackaudio.org/ Thanks for your response, that really sounds like a job for JACK. However, due to the nature of jack it seems that running the jack-daemon is always necessary. As my code is supposed to work on a very small scale embedded target, I would prefer to have a small stand-alone application that does not require a running jack-daemon. * Do you know if it is possible to use the jack functionality without having to run the jack-daemon ? >> Hence as long as the application is running, it should do the above. >> >> * Is there a special ALSA way to route audio from one PCM to another ? >> >> * If not, I suppose it would just work if I open the plugin PCM and the >> hw PCM at the same time and copy audio frames between them ? > > Dealing with this can be quite complex, especially if the pcms are > clocked of different sources, you have to deal with a degree of > resampling to ensure that clock skew doesn't get out of control. Both PCMs are on the same machine, hence they should be clocked from the same source as well ? cheers, stefan _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
