[alsa-devel] Master Plan on rewinding

[Clemens Ladisch]

Alexander E. Patrakov wrote:
> This phrase from the documentation of snd_pcm_rewindable is also
> something to think about:
>
> """
> Note: The snd_pcm_rewind() can accept bigger value than returned by
> this function. But it is not guaranteed that output stream will be
> consistent with bigger value.

This phrase again assumes a ring buffer, i.e., it says that
1) there is a buffer, and applications can write _anywhere_ in it, but
2) if a plugin reduces the allowed range (with snd_pcm_rewindable()),
   it is likely that the plugin will not notice that some part of the
   buffer has changed.

(The first part is not true for most unrewindable plugins.)


Regards,
Clemens