I was going through alsa library code, I wanted to know read function that is being used. However I see there are more than one version of read functions. i.e
.readi = snd_pcm_hw_readi
.readi = snd_pcm_ioplug_readi
.readi = snd_pcm_mmap_readi
.readi = snd_pcm_dshare_readi
.readi = snd_pcm_plugin_readi
I am not sure how does alsa library choose which function to use ?
what params make it choose different API's (like swparams ,hwparams)