At Wed, 9 Jan 2008 14:17:28 +0100 (CET), Jaroslav Kysela wrote: > > Hi all, > > I just added snd_pcm_htimestamp() function to alsa-lib: > > int snd_pcm_htimestamp(snd_pcm_t *pcm, snd_pcm_uframes_t *avail, > snd_htimestamp_t *tstamp); Thanks, looks good. I suppose the unimplemented stuff shall be implemented soon in near future? > If you have any complaints, please, do now. > > Also, I would like to change SNDRV_PCM_TSTAMP_MMAP semantics to > SNDRV_PCM_TSTAMP_ENABLE - when hw_ptr is updated in the driver, a > timestamp would be always grabbed to ensure that we have always a valid > timestamp & position pair. In current implementation, if an application > updates hw_ptr in driver (using for example PCM delay ioctl), timestamp > grabbed in the interrupt handler won't be associated with any real ring > buffer position which makes things complicated and not too much abstract. > Opinions? Sounds reasonable to me. Takashi _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
