116 lines
3.1 KiB
Plaintext
116 lines
3.1 KiB
Plaintext
;
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; Toplevel configuration for the ALSA Ordinary Mixer Interface
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;
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; Copyright (c) 2003 Jaroslav Kysela <perex@perex.cz>
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; License: GPL v2 (http://www.gnu.org/licenses/gpl.html)
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;
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(defun sndo_include (hctl stream)
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(setq info (Acall "ctl_card_info" (Acall "hctl_ctl" hctl)))
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(if (= (Aerror info) 0)
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(progn
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(setq info (Aresult info))
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(setq driver (cdr (assq "driver" (unsetq info))))
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(setq file (concat (path "data") "/alsa/cards/" (snd_card_alias driver) "/sndo" stream "-mixer.alisp"))
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(setq r (include file))
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(when (= r -2) (Asyserr "unable to find file " file))
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)
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(setq r (Aerror info))
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)
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(unsetq info driver file r)
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)
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(defun sndo_mixer_open_fcn (hctl stream pcm)
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(setq fcn (concat "sndo" stream "_mixer_open"))
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(setq r (if (exfun fcn) (funcall fcn hctl pcm) 0))
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(when (= r 0)
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(setq hctls (if hctls (cons hctls (cons hctl)) hctl))
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)
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(unsetq fcn r)
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)
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(defun sndo_mixer_open_hctl (name stream pcm)
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(setq hctl (Acall "hctl_open" name nil))
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(setq r (Aerror hctl))
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(when (= r 0)
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(setq hctl (Aresult hctl))
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(setq r (sndo_include hctl stream))
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(if (= r 0)
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(setq r (sndo_mixer_open_fcn hctl stream pcm))
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(Acall "hctl_close" hctl)
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)
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)
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(unsetq hctl r)
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)
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(defun sndo_mixer_open_virtual (name stream pcm)
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(setq file (concat (path "data") "/alsa/virtual/" name "/sndo" stream "-mixer.alisp"))
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(setq r (include file))
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(when (= r -2) (Asyserr "unable to find file " file))
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(when (= r 0) (setq r (sndo_mixer_open_fcn nil stream pcm)))
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(unsetq file r)
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)
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(defun sndo_mixer_open1 (name stream)
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(if (compare-strings name 0 2 "hw:" 0 2)
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(sndo_mixer_open_hctl name stream nil)
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(sndo_mixer_open_virtual name stream nil)
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)
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)
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(defun sndo_mixer_open (pname cname)
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(setq r (sndo_mixer_open1 pname "p"))
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(when (= r 0) (setq r (sndo_mixer_open1 cname "c")))
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(when (!= r 0) (sndo_mixer_close))
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(unsetq sndo_mixer_open
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sndo_mixer_open_pcm sndo_mixer_open_pcm1
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sndo_mixer_open_virtual sndo_mixer_open_fcn
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sndo_include r)
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)
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(defun sndo_mixer_open_pcm1 (pcm stream)
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(setq info (Acall "pcm_info" pcm))
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(setq r (Aerror info))
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(when (= r 0)
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(setq info (Aresult info))
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(setq card (cdr (assq "card" info)))
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(setq r
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(if (< card 0)
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(sndo_mixer_open_virtual (Acall "pcm_name" pcm) stream pcm)
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(sndo_mixer_open_hctl (format "hw:%i" card) stream pcm)
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)
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)
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)
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(unsetq info card r)
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)
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(defun sndo_mixer_open_pcm (ppcm cpcm)
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(setq r (sndo_mixer_open_pcm1 ppcm "p"))
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(when (= r 0) (setq r (sndo_mixer_open_pcm1 cpcm "c")))
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(when (!= r 0) (sndo_mixer_close))
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(unsetq sndo_mixer_open
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sndo_mixer_open_pcm sndo_mixer_open_pcm1
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sndo_mixer_open_virtual sndo_mixer_open_fcn
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sndo_include r)
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)
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(defun sndo_mixer_close1 (hctl stream)
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(when hctl
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(progn
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(setq fcn (concat "sndo" stream "_mixer_close"))
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(when (exfun fcn) (funcall fcn hctl))
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(unsetq fcn)
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(Acall "hctl_close" hctl)
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)
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)
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)
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(defun sndo_mixer_close nil
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(sndo_mixer_close1 (nth 1 hctls) "c")
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(sndo_mixer_close1 (nth 0 hctls) "p")
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(snd_card_alias_unset)
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(unsetq hctls)
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)
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(include (concat (path "data") "/alsa/cards/aliases.alisp"))
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