On Mon, 27 Oct 2008, Takashi Iwai wrote: > And, the current smixer abstraction sucks. Really. Because we do not have any abstraction available at this moment. The smixer API is not bad itself, it's just about internal alsa-lib code and how to implement abstraction layers. Also, for applications using PCM devices we need to add two functions handling all used channels like this: /* for PCM stream volume control */ int snd_pcm_mixer_element(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem); /* for Master volume control - will not be available for recording */ int snd_pcm_mixer_master(snd_pcm_t *pcm, snd_mixer_t *mixer, snd_mixer_elem_t **elem); My idea is to describe the correlations between PCM and mixer in the standard .conf files defining PCM devices. The internal smixer interface can be extended using dynamic C library now, but the question is, who will write C modules for all cards. I also prepared python interface to allow fast smixer prototyping. Another possibility is to create a C module which will parse a text configuration file describing the abstaction. Jaroslav ----- Jaroslav Kysela <perex@xxxxxxxx> Linux Kernel Sound Maintainer ALSA Project, Red Hat, Inc. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
