snd_pcm_hw_param_first (9) - Linux Manuals
snd_pcm_hw_param_first: refine config space and return minimum value
NAME
snd_pcm_hw_param_first - refine config space and return minimum value
SYNOPSIS
-
int snd_pcm_hw_param_first(struct snd_pcm_substream
* pcm, struct snd_pcm_hw_params* params, snd_pcm_hw_param_tvar, int * dir);
ARGUMENTS
pcm
-
- PCM instance
params
- the hw_params instance
var
- parameter to retrieve
dir
- pointer to the direction (-1,0,1) or NULL
DESCRIPTION
Inside configuration space defined by params remove from var all values > minimum. Reduce configuration space accordingly.
RETURN
The minimum, or a negative error code on failure.
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