audacious + shit

# install dependencies:
apt install psmisc ezstream npv sox lame

# open audacious;
# file -> settings -> plugins -> [X] Song Change -> [Settings]

# Command to run when starting a new song:
# /home/ed/audacious-callback.sh "%a" "%T"



# contents of that file:
#!/bin/bash
printf '%s\n' "$1" > /dev/shm/audacious-artist-tmp
printf '%s\n' "$2" > /dev/shm/audacious-title-tmp
mv /dev/shm/audacious-artist-tmp /dev/shm/audacious-artist
mv /dev/shm/audacious-title-tmp /dev/shm/audacious-title



# contents of patched meta.sh:
#!/bin/bash
#
# part of shit-pulse
# Shellscript Icecast Tools for PulseAudio
# BSD-Licensed, 2015-08-31, ed <irc.rizon.net>
# https://github.com/9001/shit
#

set -o pipefail
user=$(id -un)
arg="$1"

# checks if a media player is running
function have()
{
    pgrep -ou $user "$1" 2>/dev/null
}

# check if there's a supported media player running,
# and store its pid in the var for black magic later
is_db=$(have deadbeef) ||
is_cl=$(have clementine) ||
is_au=$(have audacious) ||
{
    [ "x$arg" == "xtitle" ] &&
        echo -n 'media player 404' ||
        echo -n 'ayy'

    exit 0
}

# fix corrupted text
function dec()
{
    orig="$(cat)"

    # try to decode weeaboo shit
    sjis="$(IFS= echo "$orig" | iconv -t latin1 2>/dev/null | iconv -f sjis 2>/dev/null)"

    # decode ok? if yes, keep it
    [ $? -eq 0 ] &&
        printf "%s" "$sjis" ||
        printf "%s" "$orig"

    [ -z "$orig" ] && echo 2>/dev/null
}

# get artist or title (first argument to function)
function get()
{
    # check if we deadbeef
    [ $is_db ] &&
    {
        [ "x$1" == "xartist" ] &&
            type=a ||
            type=t

        "/proc/$is_db/exe" --nowplaying %$type 2>/dev/null |
            dec

        true
    } ||

    # check if we clementine
    [ $is_cl ] &&
    {
        [ "x$1" == "xartist" ] &&
            mask='^artist: ' ||
            mask='^title: '

        qdbus org.mpris.clementine /Player \
        org.freedesktop.MediaPlayer.GetMetadata 2>/dev/null |
            grep -E "$mask" |
            head -n 1 |
            sed 's/^[^:]*: //' |
            dec

        true
    }

    # check if we audacious
    [ $is_au ] &&
    {
        [ "x$1" == "xartist" ] &&
            cat /dev/shm/audacious-artist ||
            cat /dev/shm/audacious-title
    }
}

#echo "$(date +%s.%N) start $1" >> /dev/shm/meta.log; sleep 1

[ -z "$1" ] && echo "no data" || get "$1"

#echo "$(date +%s.%N) end   $1" >> /dev/shm/meta.log