SND_PCM_HW_PARAM_FIR(9)                      PCM API                      SND_PCM_HW_PARAM_FIR(9)



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_t var,
                                  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.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   SND_PCM_HW_PARAM_FIR(9)