#!/bin/sh

## hyphop ## 

## MIT License
# https://github.com/hyphop/opus123.git

# AI-Radio.org opus streams tested

help(){
    echo "
    opus123 - command-line Opus codec radio player (like ogg123 or mpg123)
	      Listen internet radio station + display meta tags for songs

    USAGE
	
	 opus123 [url|-shotcut] [dev]

    EXAMPLE
        opus123 http://ai-radio.org
        opus123 http://ai-radio.org/128.opus default
        opus123 http://ai-radio.org/320.opus plughw:CARD=DragonFly,DEV=0
        opus123 -airadio
        opus123 - null
	AUDIODEV=plughw:CARD=HDMI,DEV=7 opus123
        opus123 --show-config
	wget https://ai-radio.org/get/opus123 -O- | sh -
    
    DOWNLOAD
	wget http://ai-radio.org/get/opus123
	wget https://raw.githubusercontent.com/hyphop/opus123/master/opus123

    INSTALL
	chhmod 0755 opus123
    
    CONFIG FILES
	/etc/opus123.conf  - system config
	~/.opus123rc       - user config

    #audio_dev=default
    #audio_out=
    #audio_out=sox --rate 48000 -q -t raw -e signed -b 16 -c 2 - -t alsa
    #reconnect_auto=1
    #stream_default=http://ai-radio.org/64.opus
    #stream_1=http://ai-radio.org/128.opus
    #stream_2=http://ai-radio.org/64.opus
    #stream_3=http://ai-radio.org/320.opus
    #stream_n=URL
    #stream_airadio=http://ai-radio.org/128.opus
    
    Add shotcut example
	
    echo stream_default=http://ai-radio.org/64.opus >> ~/.opus123rc 
    echo stream_airadio=http://ai-radio.org/64.opus >> ~/.opus123rc 

    LINKS

    * https://github.com/hyphop/opus123.git
    * http://ai-radio.org/chronos/2015-06-08-opus123-command-line-radio-player

    "
}
note(){
    echo "    NOTICE!
	$1 - required installed $2 package $3"
}
check(){
    command -v $1 >/dev/null 2>&1 && return 1
    return 0
}


[ "$1" = "--help" ] && help && exit

src=$1

decoder="opusdec --force-wav - -"
check opusdec &&  help && note opus-tools https://www.opus-codec.org/downloads/ && exit

LADSPA_PATH=/usr/lib/ladspa/

filter_sox=""

dev=$2

AUDIODEV=${AUDIODEV:-$dev}
LADSPA_PATH=${LADSPA_PATH:-/usr/lib/ladspa/}
conf=/etc/opus123.conf
store_user=~/.opus123rc

[ -f $conf ] && . $conf
[ -f $store_user ] && . $store_user

[ "$stream_default" = "" ] && { 
echo "[i] write default user config $store_user" 2>&1 ;
echo "# default user config
#audio_dev=alsa_pcm_name
#audio_dev=default
reconnect_auto=1
stream_default=http://ai-radio.org/128.opus
stream_airadio=http://ai-radio.org/128.opus
stream_mid=http://ai-radio.org/128.opus
stream_hi=http://ai-radio.org/320.opus
stream_low=http://ai-radio.org/64.opus
" >> $store_user 

[ -f $store_user ] && . $store_user

}

[ "$1" = "--show-config" ] && {
    [ -f $conf ] && echo "== $conf" && cat $conf
    [ -f $store_user ] && echo "== $store_user" && cat $store_user
    exit 0
}

[ "$src" = "-list" ] && { grep stream_ $store_user; exit 0 ; } 
#[ "$src" = "-conf" ] && { cat $store_user; exit 0; } 

shotcut=${src#-}
[ "$shotcut" != "$src" ] && eval src=\$stream_$shotcut

[ "$src" = "" ] && { src=$stream_default;
    [ "$src" ] && echo "use default stream $stream_default"; } 

[ "$dev" = "" ] && dev=$audio_dev
[ "$dev" = "" ] && dev="default"

AUDIODEV=${AUDIODEV:-$dev}
dev=$AUDIODEV
export AUDIODEV=$AUDIODEV

[ "$get" = "" ] && { check curl  || get="curl -k -A opus123/curl -sLN"; }
[ "$get" = "" ] && { check wget  || get="wget -U opus123/wget -qO-"; }
[ "$get" = "" ] && help && note curl curl or && note wget wget && exit

[ "$audio_out" = "" ] || out=$audio_out
[ "$out" = "" ] && { check aplay || out="aplay -q -D $dev"; } 
[ "$out" = "" ] && { check play || out="play -q -"; 
    #out="play --rate 48000 -q -t raw -e signed -b 16 -c 2 - $filter_sox"; 
}
[ "$out" = "" ] && help && note aplay alsa-utils or && note play sox && exit

[ "$src" = "" ] && help && exit

echo "connection to $src / $get / $audio_filter / $out"
try=1


while [ "1" ]; do

    echo "$get \"$src\" | $decoder | $audio_filter | $out"

    [ "$audio_filter" = "" ] || \
    $get "$src" | $decoder | $audio_filter | $out
    [ "$audio_filter" = "" ] && \
    $get "$src" | $decoder | $out

    [ "$reconnect_auto" ] || exit 0;
    echo "reconnect $try"
    try=$((try+1))
    sleep 1 
done