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来自「ALSA驱动的一些调试测试工具」· 代码 · 共 146 行

#
# Default ALSA volume levels and setting when initialization database fails.
#
# Basic rules are:
#  - keep volumes at minimal level, but sound should be hearable
#  - enable just main speakers for playback and main microphone for recording
#

# **************************************************************************
# playback
# **************************************************************************

ENV{volume}:="-20dB"

CTL{reset}="mixer"
CTL{name}="Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Master Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Master Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Master Digital Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Master Digital Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Front Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Front Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Headphone Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Headphone Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Speaker Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Speaker Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="PC Speaker Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="PC Speaker Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="PCM Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="PCM Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="PCM Playback Volume",CTL{index}="1",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="PCM Playback Switch",CTL{index}="1",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="DAC Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="DAC Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Synth Playback Volume",,PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Synth Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Wave Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="100%"
CTL{name}="Wave Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Music Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="100%"
CTL{name}="Music Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="CD Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="CD Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Mono Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Mono Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="Master Mono Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Master Mono Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{reset}="mixer"
CTL{name}="AC97 Playback Volume",PROGRAM=="__ctl_search", \
  CTL{values}="100%"
CTL{name}="AC97 Playback Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

#
# Powermacs
#

CTL{reset}="mixer"
CTL{name}="DRC Range",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"

# **************************************************************************
# capture
# **************************************************************************

ENV{volume}:="20dB"

CTL{reset}="mixer"
CTL{name}="Capture Volume",PROGRAM=="__ctl_search", \
  CTL{values}="$env{volume}",RESULT!="0",CTL{values}="75%"
CTL{name}="Capture Switch",PROGRAM=="__ctl_search", \
  CTL{values}="on"

CTL{name}="Input Source",PROGRAM=="__ctl_search", \
  CTL{enums}=="*|Internal Mic|*",CTL{values}="Internal Mic", \
  GOTO="end_input_source"
CTL{name}="Input Source",PROGRAM=="__ctl_search", \
  CTL{enums}=="*|Mic|*",CTL{values}="Mic"
LABEL="end_input_source"

CTL{name}="Internal Mic Boost",PROGRAM=="__ctl_search", \
  CTL{values}="on"