Hi, I've tried to implement an external shared object to be able to execute arbitrary functions on PCM device opening and closing. After quite some source code reading i had an almost working but segfaulting example. This segfault is because snd_dlclose is called right after calling a hook install function and therefore i can't snd_pcm_hook_add functions from the same shared object. To me it looks like a bug but probably i just don't see how this functionality is intended to be used. Takashi, git-blame showed that it's you who stuffed this dlclose call that bothers me ;) TIA Background information: We're working on audio subsystem for OpenMoko Freerunner. It's an idea of Joerg Reisenweber to have virtual alsa devices for every reasonable use-case (like dedicated device for stereout, dedicated device for recording from gsm etc), for that we need a hook on every device opening and closing mostly to set up routing inside WM8753 codec. ctl_elems is not enough because we need a more complex locking scheme (with priorities, some kind of callbacks to the apps using particular devices etc) and other flexibility. -- Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software! mailto:fercerpav@xxxxxxxxx _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
