Code: Select all

#!/bin/bash
# PLACE THIS AS FILE /usr/local/bin/eekwal    and chmod +x
#
# THIS SCRIPT IS DERIVED FROM"pEqualizer"
#     http://murga-linux.com/puppy/viewtopic.php?t=81889
#
# License: GPLv2 or, at your option, any later version
#   20121028 (c) 01micko@gmail.com and zigbert@murgalinux.com 2011-2012
# Modified for antiX Feb2017 
#
# Occupies approx 3Mb RAM while running.
# Feel free to launch, make changes, and exit; changed settings will remain in effect.
#
# NOTE: If a given application provides its own"selected/preferred sound card" pref, 
#       that preference will override global alsa settings.
#       This equalizer utiltity should work for any app which uses the global alsa settings.

# could omit checking this, as libasound_module_ctl_equal.so is provided by
#    pkg"libasound2-plugin-equal" (present by default in antiX16)
if [ ! -f /usr/lib/i386-linux-gnu/alsa-lib/libasound_module_ctl_equal.so ] && \
   [ ! -f /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_ctl_equal.so ]; then
    echo"Missing dependencies: libasound_module_ctl_equal.so"
    echo"equalizer will now exit."
    exit 1 ;
fi

# further dependencies (omit checking, as these are pre-installed in antiX16)
#     libasound_module_ctl_equal.so (provided by pkg"libasound2-plugin-equal")
#     gtkdialog >=0.8.0 (pre-installed package"gtkdialog" provides v0.8.3)

if [[ $UID =="0" ]]; then
    echo"equalizer utility is NOT suitable for use by root user"
    exit 1 ;
fi

# REF: these are the freq fields recognized by alsaequal
#   '01. 31 Hz' '02. 63 Hz' '03. 125 Hz' '04. 250 Hz' '05. 500 Hz'
#   '06. 1 kHz' '07. 2 kHz' '08. 4 kHz' '09. 8 kHz' '10. 16 kHz'
#set -x #uncomment this line while debugging
VERSION=0.9.1

#enable alsaequal
[ ! -f $HOME/.asoundrc.bak ] && cat > $HOME/.asoundrc.bak << _EQ
ctl.equal {
    type equal;
}

pcm.plugequal {
    type equal;
    #       Modify the line below if you do not want to use sound card 0.
    #slave.pcm"plughw:0,0";
    #       or if you want to use with multiple applications output to dmix
    slave.pcm"plug:dmix"
}

#pcm.equal {
    # Or if you want the equalizer to be your default soundcard uncomment the following line and comment the above line.
pcm.!default {
    type plug;
    slave.pcm plugequal;
}
_EQ
mv -f $HOME/.asoundrc.bak $HOME/.asoundrc

#setup working dirs
mkdir /tmp/eekwal 2> /dev/null
[ ! -d $HOME/.config/eekwal/preset ] && mkdir -p $HOME/.config/eekwal/preset
export CONFDIR="$HOME/.config/eekwal"
#create config
[ ! -f $HOME/.config/eekwal/eekwalrc ] && echo '#eekwal config
export PRESET=Flat' > $HOME/.config/eekwal/eekwalrc
#create presets
[ ! -f $CONFDIR/preset/Flat ] && cat > $CONFDIR/preset/Flat << _FLAT
VAL1=65
VAL2=65
VAL3=65
VAL4=65
VAL5=65
VAL6=65
VAL7=65
VAL8=65
VAL9=65
VAL10=65
_FLAT
[ ! -f $CONFDIR/preset/Jazz ] && cat > $CONFDIR/preset/Jazz << _JAZZ
VAL1=53
VAL2=42
VAL3=54
VAL4=58
VAL5=63
VAL6=68
VAL7=74
VAL8=79
VAL9=89
VAL10=79
_JAZZ
[ ! -f $CONFDIR/preset/Pop ] && cat > $CONFDIR/preset/Pop << _POP
VAL1=78
VAL2=67
VAL3=64
VAL4=53
VAL5=53
VAL6=53
VAL7=59
VAL8=64
VAL9=74
VAL10=74
_POP
[ ! -f $CONFDIR/preset/Rock ] && cat > $CONFDIR/preset/Rock << _ROCK
VAL1=68
VAL2=52
VAL3=59
VAL4=63
VAL5=68
VAL6=68
VAL7=69
VAL8=64
VAL9=54
VAL10=54
_ROCK

#read config
. $HOME/.config/eekwal/eekwalrc
#if preset is not valid we need to give a helping hand
if [ !"$PRESET" ] || [ ! -s $HOME/.config/eekwal/preset/$PRESET ]; then
   export PRESET=$(ls $HOME/.config/eekwal/preset/ | head -n1)
   export PRESETNEW=$PRESET
   . /usr/local/bin/eekwal_func -writeconfig
   . /usr/local/bin/eekwal_func -preset
fi

#parameters
while [ $# != 0 ]; do
    I=1
    while [ $I -lt `echo $# | wc -c` ]; do
        case $1 in
            -e)     EMBEDDED=true;;
            -s) NOGUI=true;;
            -h|--help)
                echo 'eekwal alsa audio equalizer
  -e    Run embedded - gtkdialog code is pointed to stdout
  -h    Show this help message
  -s    Setup equalizer - no gui
  -v    Show eekwal version'
                exit;;
            -v|--version)
                echo"eekwal $VERSION"; exit;;
        esac
        shift
        I=$(($I+1))
    done
done

#get/set initial values
/usr/local/bin/eekwal_func -getcurrent
. /tmp/eekwal/valuesrc
["$NOGUI" ="true" ] && exit
. /usr/local/bin/eekwal_func -gui

#build base gui as shown embedded            ##### CONSIDER USING BUTTON LABELTEXT VS ICONS
S='
<vbox>
    <hbox>
        '$SCALES'
    </hbox>
    <hseparator></hseparator>
    <hbox>
        <button tooltip-text="Delete preset">
            <input file stock="gtk-delete"></input>
            <action>/usr/local/bin/eekwal_func -delete"$PRESETNEW"</action>
            <action>refresh:PRESETNEW</action>
        </button>
        <button tooltip-text="Save custom preset (type a new Name or overwrite existing)">
            <input file stock="gtk-save"></input>
            <action>/usr/local/bin/eekwal_func -save"$PRESETNEW"</action>
            <action>refresh:PRESETNEW</action>
        </button>
        <comboboxentry has-focus="true">
            <variable>PRESETNEW</variable>
            <default>'$PRESET'</default>
            <input>ls -1 '$HOME'/.config/eekwal/preset/</input>
            <action>/usr/local/bin/eekwal_func -preset</action>'
            for I in 1 2 3 4 5 6 7 8 9 10; do S=$S'<action>refresh:SLIDER'$I'</action>'; done
            S=$S'</comboboxentry>
    </hbox>
</vbox>'
GUI_EMBEDDED="$S"

if ["$EMBEDDED" ="true" ]; then
    echo"$GUI_EMBEDDED"
    exit
fi

#show standalone gui  ############ NEED TO SPECIFY A KNOWN EXISTING ICONFILE
echo '<window title="audio equalizer" width-request="380" resizable="false">
    <vbox>'$GUI_EMBEDDED'</vbox>
    <action signal="delete-event">mv -f $HOME/.asoundrc $HOME/.asoundrc.bak</action>
    </window>' | gtkdialog -s

Code: Select all

#!/bin/bash
# PLACE THIS AS FILE /usr/local/bin/eekwal_func    and chmod +x

case"$1" in
-gui)
    COUNT=1
    until [ $COUNT = 11 ]; do
        case $COUNT in  #labels
            1) FR="31Hz";  FREQ='01. 31 Hz';;
            2) FR="63Hz";  FREQ='02. 63 Hz';;
            3) FR="125Hz"; FREQ='03. 125 Hz';;
            4) FR="250Hz"; FREQ='04. 250 Hz';;
            5) FR="500Hz"; FREQ='05. 500 Hz';;
            6) FR="1kHz";  FREQ='06. 1 kHz';;
            7) FR="2kHz";  FREQ='07. 2 kHz';;
            8) FR="4kHz";  FREQ='08. 4 kHz';;
            9) FR="8kHz";  FREQ='09. 8 kHz';;
            10) FR="16kHz"; FREQ='10. 16 kHz';;
        esac
        #<action>echo"'$VARIABLE' is now $'$VARIABLE'"</action>  # uncomment for testing
        SCALES=$SCALES'
        <vbox width-request="28">
            <vscale width-request="15" height-request="150" scale-min="0" scale-max="100" scale-step="1" value-pos="2" digits="0" inverted="true">
                <input file>/tmp/eekwal/VAL'$COUNT'</input>
                <variable>SLIDER'$COUNT'</variable>
                <action>amixer -D equal sset '"'$FREQ'"' $SLIDER'$COUNT' >/dev/null 2>&1</action>
                <item>"50  | 1"</item>
            </vscale>
            <text use-markup="true"><label>"<tt><small><small>'${FR}'</small></small></tt>"</label></text>
        </vbox>'
        COUNT=$(($COUNT+1))
    done
    ;;

-preset)
    cp -f $HOME/.config/eekwal/preset/$PRESETNEW /tmp/eekwal/valuesrc
    . /tmp/eekwal/valuesrc
    eval /usr/local/bin/eekwal_func -links  #update images
    COUNT=1
    for VAL in '01._31_Hz' '02._63_Hz' '03._125_Hz' '04._250_Hz' '05._500_Hz' '06._1_kHz' '07._2_kHz' '08._4_kHz' '09._8_kHz' '10._16_kHz'; do
        ACTVAL="`echo"$VAL"|tr '_' ' '`"
        case $COUNT in #values
            1)SETVAL="$VAL1";;
            2)SETVAL="$VAL2";;
            3)SETVAL="$VAL3";;
            4)SETVAL="$VAL4";;
            5)SETVAL="$VAL5";;
            6)SETVAL="$VAL6";;
            7)SETVAL="$VAL7";;
            8)SETVAL="$VAL8";;
            9)SETVAL="$VAL9";;
            10)SETVAL="$VAL10";;
        esac
        #echo"amixer -D equal sset"$ACTVAL""$SETVAL"" >> /root/debug #debug remove
        amixer -D equal sset"$ACTVAL""$SETVAL" >/dev/null 2>&1 #set mixer, suppress stdout and stderr
        echo $SETVAL > /tmp/eekwal/VAL$COUNT
        COUNT=$(($COUNT+1))
    done
    . $0 -writeconfig
    ;;

-writeconfig)
    [ !"$PRESETNEW" ] && exit
    echo"#eekwal alsa audio config" > $HOME/.config/eekwal/eekwalrc
    echo"export PRESET=$PRESETNEW" >> $HOME/.config/eekwal/eekwalrc
    ;;

-getcurrent)
    #get current values #could be a problematic if surround is enabled
    echo"#values" > /tmp/eekwal/valuesrc
    CNT=1
    for VAL in '01._31_Hz' '02._63_Hz' '03._125_Hz' '04._250_Hz' '05._500_Hz' '06._1_kHz' '07._2_kHz' '08._4_kHz' '09._8_kHz' '10._16_kHz'; do
        ACTVAL="`echo"$VAL"|tr '_' ' '`"
        PERCENT="`amixer -D equal sget"$ACTVAL" | grep -F"Left:" | cut -d ':' -f2 | cut -d' ' -f3`"
        echo"VAL${CNT}=$PERCENT" >> /tmp/eekwal/valuesrc
        echo"$PERCENT" > /tmp/eekwal/VAL${CNT}
        CNT=$(($CNT+1))
    done
    #error check and kill
    if [ ! -f $HOME/.alsaequal.bin ];then
            gtkdialog-splash -close box -bg hotpink -text"An error occurred. Please check your sound configuration."
            exit 1
    fi
    ;;

-save)
    export PRESETNEW="`echo"$2"| tr ' ' '_'`"    #ensure it is only one word
    if [ -s $HOME/.config/eekwal/preset/$PRESETNEW ]; then  #already exists
        export yesno_box='
        <window title="audio equalizer" window_position="2" allow-grow="false">
            <vbox>
                <frame>
                    <pixmap icon_size="6"><input file stock="gtk-dialog-warning"></input></pixmap>
                    <text use-markup="true"><label>"<b>Preset <u>'$PRESETNEW'</u> already exists.</b>"</label></text>
                    <text><label>Do you want to overwrite existing Preset?</label></text>
                </frame>
                <hbox><button no></button><button yes></button></hbox>
            </vbox>
        </window>'
        I=$IFS; IFS=""
        for STATEMENTS in  $(gtkdialog -p yesno_box --center); do
            eval $STATEMENTS
        done
        IFS=$I
        [ $EXIT = No ] && exit
    fi
    $0 -getcurrent
    cp /tmp/eekwal/valuesrc $HOME/.config/eekwal/preset/$PRESETNEW
    . $0 -writeconfig
    ;;

-delete)
    PRESET="$2"
    export yesno_box='
    <window title="audio equalizer" window_position="2" allow-grow="false">
        <vbox>
        <frame>
            <pixmap icon_size="6"><input file stock="gtk-dialog-warning"></input></pixmap>
            <text use-markup="true"><label>"<b>Do you REALLY want to delete the preset named <u>'$PRESET'</u>?</b>"</label></text>
        </frame>
        <hbox><button no></button><button yes></button></hbox>
        </vbox>
    </window>'
    I=$IFS; IFS=""
    for STATEMENTS in $(gtkdialog -p yesno_box --center); do
        eval $STATEMENTS
    done
    IFS=$I
    [ $EXIT = No ] && exit
    rm $HOME/.config/eekwal/preset/$PRESET
    #get a new sane preset
    export PRESETNEW=$(ls $HOME/.config/eekwal/preset/ | head -n1)
    . $0 -preset
    . $0 -writeconfig
    ;;
esac