[alsa-devel] [PATCH 05/11] ucm: docs: Add MinBufferLevel value

[Jaroslav Kysela]

Dne 07. 11. 19 v 2:58 Curtis Malainey napsal(a):
> Allows ucm to override minimum buffer level for platforms that
> incorrectly report their buffer level.
> 
> Signed-off-by: Curtis Malainey <cujomalainey at chromium.org>
> ---
>   include/use-case.h | 4 ++++
>   1 file changed, 4 insertions(+)
> 
> diff --git a/include/use-case.h b/include/use-case.h
> index 28e92d17..05628303 100644
> --- a/include/use-case.h
> +++ b/include/use-case.h
> @@ -330,6 +330,10 @@ int snd_use_case_get_list(snd_use_case_mgr_t *uc_mgr,
>    *   - JackType
>    *      - Specifies whether the jack is accessed via hctl or gpio and therefore
>    *        only carries the possible values of "gpio" or "hctl"
> + *   - MinBufferLevel
> + *      - This is used on platform where reported buffer level is not accurate.
> + *        E.g. "512", which holds 512 samples in device buffer. Note: this will
> + *        increase latency.
>    */
>   int snd_use_case_get(snd_use_case_mgr_t *uc_mgr,
>                        const char *identifier,
> 

This is something like the BATCH flag we have in the PCM API. It would be 
probably nice to add this to the PCM API, too. Takashi?

				Jaroslav

-- 
Jaroslav Kysela <perex at perex.cz>
Linux Sound Maintainer; ALSA Project; Red Hat, Inc.