On Fri, Dec 28, 2018 at 12:45:49PM +0900, Takashi Sakamoto wrote: > I note that there're some levels of timestamp and autio timestamp. > Additionally, audio timestamp is updated only in any hardware/software IRQs, > thus it's not available with 'no-period-wakeup' runtime, FYI. Oops. No, the audio timestamp can be updated in updating process of hardware pointer. A call of ioctl with SNDRV_PCM_IOCTL_STATUS and SNDRV_PCM_IOCTL_STATUS_EXT can return updated audio timestamp. Regards Takashi Sakamoto _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel