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pcm: clarify -ENODATA description (recovery, event)

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Signed-off-by: Jaroslav Kysela <perex@perex.cz>
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Jaroslav Kysela 2020-06-05 11:54:34 +02:00
parent 1b0516dbfb
commit f3597737de
1 changed files with 5 additions and 0 deletions
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5
src/pcm/pcm.c
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@ -300,6 +300,11 @@ PCM device for echo reference as described by SND_USE_CASE_MOD_ECHO_REF
UCM token, may return -ENODATA if the linked playback stream has not been UCM token, may return -ENODATA if the linked playback stream has not been
started. started.
There is no defined recovery or event mechanism to signal the data / link
availability at the moment. The PCM must be completely restarted until
the mechanism is designed. The #snd_pcm_recover() function cannot be
used for this.
\section pcm_params Managing parameters \section pcm_params Managing parameters
The ALSA PCM device uses two groups of PCM related parameters. The hardware The ALSA PCM device uses two groups of PCM related parameters. The hardware