diff options
Diffstat (limited to 'config/chroot_local-hooks/audio-hack-silentinit')
| -rwxr-xr-x | config/chroot_local-hooks/audio-hack-silentinit | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/config/chroot_local-hooks/audio-hack-silentinit b/config/chroot_local-hooks/audio-hack-silentinit new file mode 100755 index 0000000..b8affdf --- /dev/null +++ b/config/chroot_local-hooks/audio-hack-silentinit @@ -0,0 +1,43 @@ +#!/bin/sh +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 + |