External I/O-Plugin API is missing precise timestamp control

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alsa-project/alsa-lib issue #377 was opened from z-s-e:

Unless I overlooked something, it seems not possible for an ioplug plugin to influence the timestamps reported by `snd_pcm_status_get_htstamp()` - I suppose those are rather autogenerated by the lib and thus of fairly low precision. Also, at the moment it is possible that a status update contains newer timestamps than a previous update, but without an increased `snd_pcm_status_get_avail()` value, which makes these autogenerated timestamps not very well behaved.

It would be much better if there was a way for a plugin to tell the alsa-lib which timestamps it should forward to the user.

Issue URL     : https://github.com/alsa-project/alsa-lib/issues/377
Repository URL: https://github.com/alsa-project/alsa-lib



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