[alsa-devel] [PATCH 0/2 v2] alsa-lib: dynamically adapt the avail_min on the slave

[Takashi Iwai]

On Mon, 19 Dec 2016 04:37:49 +0100,
Jiada Wang wrote:
> 
> When configuring avail_min to multiple of slave period size it can happen
> that user waits one slave period longer than needed for available data. 
> Root cause is implicit grabbing of slave samples in avail_update operation. 
> On next entering poll, the slave will wait for the avail_min threshold 
> reached again, as he is not aware that there are already pending samples 
> in the above layer which are not yet provided to user. 
> Solution is to dynamically adapt the avail_min on the slave. 

Thanks, applied both patches now.


Takashi


> 
> Andreas Pape (2):
>   plugin: dynamically update avail_min on slave
>   rate: dynamic update avail_min on slave
> 
>  src/pcm/pcm_plugin.c | 64 +++++++++++++++++++++++++++++++++++++++++++++++++++-
>  src/pcm/pcm_plugin.h |  3 +++
>  src/pcm/pcm_rate.c   |  2 +-
>  3 files changed, 67 insertions(+), 2 deletions(-)
> 
> -- 
> 2.9.3
>