From 2dee2021d08a0837ce40941fff43a4b09d692146 Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Mon, 29 Sep 2014 16:05:00 +0200
Subject: [alsa] Set default sound card to first non-HDMI card

---
 .../etc/systemd/system/alsa-default-card.service   | 11 +++++
 .../alsa-default-card.service                      |  1 +
 .../data/opt/openslx/scripts/alsa-default_card     | 47 ++++++++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 remote/modules/alsa/data/etc/systemd/system/alsa-default-card.service
 create mode 120000 remote/modules/alsa/data/etc/systemd/system/multi-user.target.wants/alsa-default-card.service
 create mode 100755 remote/modules/alsa/data/opt/openslx/scripts/alsa-default_card

diff --git a/remote/modules/alsa/data/etc/systemd/system/alsa-default-card.service b/remote/modules/alsa/data/etc/systemd/system/alsa-default-card.service
new file mode 100644
index 00000000..db35eeb7
--- /dev/null
+++ b/remote/modules/alsa/data/etc/systemd/system/alsa-default-card.service
@@ -0,0 +1,11 @@
+[Unit]
+Description=Set default card ALSA will use
+DefaultDependencies=no
+After=tmp.target
+Wants=tmp.target
+
+[Service]
+Type=oneshot
+ExecStart=/opt/openslx/scripts/alsa-default_card
+RemainAfterExit=yes
+
diff --git a/remote/modules/alsa/data/etc/systemd/system/multi-user.target.wants/alsa-default-card.service b/remote/modules/alsa/data/etc/systemd/system/multi-user.target.wants/alsa-default-card.service
new file mode 120000
index 00000000..55e393fd
--- /dev/null
+++ b/remote/modules/alsa/data/etc/systemd/system/multi-user.target.wants/alsa-default-card.service
@@ -0,0 +1 @@
+../alsa-default-card.service
\ No newline at end of file
diff --git a/remote/modules/alsa/data/opt/openslx/scripts/alsa-default_card b/remote/modules/alsa/data/opt/openslx/scripts/alsa-default_card
new file mode 100755
index 00000000..4edfcdd5
--- /dev/null
+++ b/remote/modules/alsa/data/opt/openslx/scripts/alsa-default_card
@@ -0,0 +1,47 @@
+#!/bin/ash
+
+PROC="/proc/asound/cards"
+
+if [ ! -r "$PROC" ]; then
+	echo "'${PROC}' not found or not readable."
+	exit 1
+fi
+
+if [ -w "/etc" ]; then
+	FILE="/etc/asound.conf"
+elif [ -n "$HOME" ]; then
+	FILE="${HOME}/.asoundrc"
+else
+	FILE="$(getent passwd root | awk -F ':' '{print $6}')/.asoundrc"
+fi
+
+if [ -e "${FILE}" -a "x$1" != "x--force" ]; then
+	echo "'${FILE}' already exists, use --force to overwrite."
+	exit 1
+fi
+
+# Try to filter HDMI cards first
+CARD=$(grep -v -i 'HDMI' "${PROC}" | grep -E -o '^[[:space:]]*[0-9]+[[:space:]]+' | head -n 1)
+# If empty, try again with all
+[ -z "${CARD}" ] && CARD=$(cat "${PROC}" | grep -E -o '^[[:space:]]*[0-9]+[[:space:]]+' | head -n 1)
+
+if [ -z "${CARD}" ]; then
+	echo "No sound card found."
+	exit 1
+fi
+
+cat > "${FILE}" <<HEREDOC
+pcm.!default {
+	type hw
+	card $CARD
+}
+ctl.!default {
+	type hw
+	card $CARD
+}
+timer.!default {
+	type hw
+	card $CARD
+}
+HEREDOC
+
-- 
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