Martin Geier authored Apr 02, 2024 and Wim Taymans committed Apr 09, 2024

This patch fixes use case, when disable_tsched is set and
api.alsa.period-size is set to value different from default quantum size.

In a such configuration, threshold needs to be set to a final value
before snd_pcm_sw_params_set_avail_min is called to get IRQs with
right timing.

Avail minimum is calculated from a threshold set in the check_position_config.
The method returned different value for threshold right before playback
started and after the playback started. Therefore threshold used in
the snd_pcm_sw_params_set_avail_min was incorrect.

Force the check_position_config to use configured values when called
from spa_alsa_prepare as this method is called when starting new playback
and the state->period_frames and the state->rate are already known.

Signed-off-by: Martin Geier <martin.geier@streamunlimited.com>