> Also, why are mmap and munmap operations required in ALSA? > Right now, we do not have mmap and munmap operations exposed. Though the hardware constraints have "SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID" defined. Looks like, if we have to PulseAudio on top, mmap operations are required in ALSA. mmap operations are not required by PulseAudio. Look at pulseaudio/src/modules/alsa/alsa*.c, there's a mmap_write and a unix_write. _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel