#!/bin/sh

duration=300
magic=/usr/share/misc/magic-mm
dsp_progs=$(cat ~mats/.dsprc)

kill_mmwrapper()
{
    local pst pids p sig

    pst=$(ps xao pid,command | \
	egrep '^ *[0-9]+ /bin/sh .*(mmwrapper|play_sid|play_ym)')
    if [ -n "$pst" ]; then
	pids=$(echo "$pst" | sed -E 's/^ *([0-9]+).*$/\1/')
	for p in $pids; do
	    if [ $p -ne $$ ]; then kill $p; fi
	done
    fi
    for p in $dsp_progs; do
	sig=; if [ "$p" = "mplayer" ]; then sig="-9"; fi
	killall $sig $p
    done
    nawk 'BEGIN {
	while(("chkdsp /dev/dsp" | getline) > 0) { if ($0 == 1) break }
    }'
    mixer pcm 76
}

do_file()
{
    local ts t ns s

    ts="$(file -m $magic "$1")"; t="${ts#*: }"
    case "$t" in
    PlaySID\ *)
	ns=$(echo "$t" | sed -E 's/^.+, (single|[0-9]+) songs?, .+$/\1/')
	if [ "$ns" = "single" ]; then ns=1; fi
	s=1
	while [ $s -le $ns ]; do
	    sidplay -f48000 -16 -o$s -t$duration "$1"
	    s=$(($s + 1))
	done
    esac
}

trap '' 1
exec >/dev/null 2>&1
kill_mmwrapper

if [ -d "$1" ]; then
    IFS="
"
    for f in $(find "$1" -type f); do
	do_file "$f"
    done
else
    do_file "$1"
fi
.