#!/bin/sh
[ -x /usr/bin/startkde ] || exit 0
mkdir -p /etc/skel/.kde/Autostart
cat >/etc/skel/.kde/Autostart/audio-hack-silentinit.sh <<"EOF"
#!/bin/sh
# Workaround for kdeinit4-crash if phonon-vlc is used
# (KDE-Bug #279308 or Alsa-Bug #5471)
# 
# kmix/kdeinit4 crashes when it tries to access the device for the first time
# Workaround: play a short silent sound to "initialize" sounddevice before kde tries and fails
# 
# Source of WAV encoding: http://blog.mister-muffin.de/2011/06/04/generate-silent-wav/

pack_int(){ printf "%08X\n" $1 | sed 's/\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)/\\\\\\x\4\\\\\\x\3\\\\\\x\2\\\\\\x\1/I' | xargs printf; }

pack_short(){ printf "%04X\n" $1 | sed 's/\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)/\\\\\\x\2\\\\\\x\1/I' | xargs printf; }

channels=1
bps=16
sample=44100
Subchunk1Size=18
Subchunk2Size=882
ChunkSize=$((20 + $Subchunk1Size + $Subchunk2Size))

(
echo -n RIFF
pack_int $ChunkSize
echo -n "WAVEfmt "
pack_int $Subchunk1Size
pack_short 1
pack_short $channels
pack_int $sample
pack_int $((bps/8 * channels * sample))
pack_short $((bps/8 * channels))
pack_short $bps
pack_short 0
echo -n data
pack_int $Subchunk2Size

dd if=/dev/zero bs=1 count=$Subchunk2Size 2>/dev/null
) | aplay
EOF
chmod +x /etc/skel/.kde/Autostart/audio-hack-silentinit.sh