midiplay

#!/bin/sh

# helper functions

print_usage() {
    # Print script usage

    cat <<EOF
Usage: $0 [-p PORT] [-f FILE] [-t TRACK] [-c CHANNEL] [-n NAME]
Play notes using MIDI streams or MIDI files.

    -p, --port              use given sndio rmidi port instead of stdin
    -f, --file              use given MIDI file instead of stdin, overrides port
    -t, --track             ID of track to follow (only used in case of a file, default: 0)
    -c, --channel           ID of channel to follow (1-16 range, default: 1)
    -n, --note              note-playing function name (possible values: 'play', 'bell', 'print', default: 'play')
EOF
}

# parse args

port=''
file=''
track='0'
channel='1'
function='play'

unparsed=''

while [ "$#" -gt 0 ]; do
    case "$1" in
    -p | --port)
        shift
        port="$1"
        ;;
    -f | --file)
        shift
        file="$1"
        ;;
    -t | --track)
        shift
        track="$1"
        ;;
    -c | --channel)
        shift
        channel="$1"
        ;;
    -n | --name)
        shift
        function="$1"
        ;;
    -h | --help)
        print_usage
        exit
        ;;
    *) unparsed="$unparsed $1" ;;
    esac
    shift
done

set -- $unparsed

# get script directory, works in most simple cases
scriptdir="$(dirname -- "$0")"

# import library functions
# shellcheck disable=SC1090
. "$scriptdir/beeplaylib.sh"

if [ -n "$file" ]; then
    emit_midifile "$track" "$channel" <"$file" | beeplay "note_$function"
elif [ -n "$port" ]; then
    midicat -q "rmidi/$port" -o - | emit_midistream "$channel" | beeplay "note_$function"
else
    emit_midistream "$channel" | beeplay "note_$function"
fi