[master/wrynose][PATCH 3/4] recipes-multimedia: Add wireplumber audio configuration

[Paresh Bhagat <p-bhagat@ti.com>]

Extend the wireplumber recipe to enable the session manager on all
plaorms and provide AM62D2 EVM specific audio initialization.
A set-audio-defaults.sh script is packaged to configure default audio
sinks and sources at runtime, managed by a dedicated systemd service
that runs after wireplumber starts.

Signed-off-by: Paresh Bhagat <p-bhagat@ti.com>
---
 .../wireplumber/wireplumber-arago.inc         | 33 +++++++++++++++++++
 .../wireplumber/set-audio-defaults.service    | 21 ++++++++++++
 .../wireplumber/set-audio-defaults.sh         | 32 ++++++++++++++++++
 .../wireplumber/wireplumber_%.bbappend        |  4 +++
 4 files changed, 90 insertions(+)
 create mode 100644 meta-arago-distro/recipes-multimedia/wireplumber/wireplumber-arago.inc
 create mode 100644 meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.service
 create mode 100755 meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.sh
 create mode 100644 meta-arago-distro/recipes-multimedia/wireplumber/wireplumber_%.bbappend

diff --git a/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber-arago.inc b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber-arago.inc
new file mode 100644
index 00000000..6325d26c
--- /dev/null
+++ b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber-arago.inc
@@ -0,0 +1,33 @@
+PR:append = ".arago1"
+
+FILESEXTRAPATHS:prepend:am62dxx-evm := "${THISDIR}/wireplumber:"
+
+SRC_URI:append:am62dxx-evm = " \
+    file://set-audio-defaults.sh \
+    file://set-audio-defaults.service \
+"
+
+inherit systemd
+
+# Enable wireplumber for all platforms
+SYSTEMD_PACKAGES = "${PN}"
+SYSTEMD_SERVICE:${PN} = "wireplumber.service"
+SYSTEMD_AUTO_ENABLE:${PN} = "enable"
+
+do_install:append:am62dxx-evm() {
+    # Install the script
+    install -d ${D}${bindir}
+    install -m 0755 ${UNPACKDIR}/set-audio-defaults.sh ${D}${bindir}/
+
+    # Install the systemd service file
+    install -d ${D}${systemd_system_unitdir}
+    install -m 0644 ${UNPACKDIR}/set-audio-defaults.service ${D}${systemd_system_unitdir}/
+}
+
+SYSTEMD_PACKAGES:am62dxx-evm = "${PN}"
+SYSTEMD_SERVICE:${PN}:am62dxx-evm = "wireplumber.service set-audio-defaults.service"
+SYSTEMD_AUTO_ENABLE:${PN}:am62dxx-evm = "enable"
+
+FILES:${PN} += " \
+    ${bindir} \
+"
diff --git a/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.service b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.service
new file mode 100644
index 00000000..191b89f5
--- /dev/null
+++ b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.service
@@ -0,0 +1,21 @@
+[Unit]
+Description=Set PipeWire Default Audio Devices
+# Wait for pipewire and wireplumber services to be started
+After=pipewire.service wireplumber.service
+# Ensure udev has settled so audio devices are available
+After=systemd-udev-settle.service
+Wants=pipewire.service wireplumber.service
+
+[Service]
+Type=oneshot
+ExecStart=/usr/bin/set-audio-defaults.sh
+StandardOutput=append:/var/log/set-audio-defaults-output.log
+StandardError=append:/var/log/set-audio-defaults-error.log
+RemainAfterExit=yes
+TimeoutStartSec=90
+# Restart on failure with delay
+Restart=on-failure
+RestartSec=5
+
+[Install]
+WantedBy=multi-user.target
diff --git a/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.sh b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.sh
new file mode 100755
index 00000000..49be177e
--- /dev/null
+++ b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber/set-audio-defaults.sh
@@ -0,0 +1,32 @@
+#!/bin/sh
+
+# Wait for WirePlumber to be ready
+i=1
+while [ "$i" -le 30 ]; do
+    wpctl status >/dev/null 2>&1 && break
+    sleep 1
+    i=$((i + 1))
+done
+
+# Additional delay for nodes to appear
+sleep 2
+
+# Find audio sink ID
+SINK_ID=$(pw-cli info alsa_audio_sink 2>/dev/null | head -n 1 | awk '{print $2}')
+if [ -n "$SINK_ID" ]; then
+    wpctl set-default "$SINK_ID"
+    echo "Set default sink to ID: $SINK_ID (alsa_audio_sink)"
+else
+    echo "Could not find alsa_audio_sink"
+fi
+
+# Find audio source ID
+SOURCE_ID=$(pw-cli info alsa_audio_source 2>/dev/null | head -n 1 | awk '{print $2}')
+if [ -n "$SOURCE_ID" ]; then
+    wpctl set-default "$SOURCE_ID"
+    echo "Set default source to ID: $SOURCE_ID (alsa_audio_source)"
+else
+    echo "Could not find alsa_audio_source"
+fi
+
+echo "Done"
diff --git a/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber_%.bbappend b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber_%.bbappend
new file mode 100644
index 00000000..541b2963
--- /dev/null
+++ b/meta-arago-distro/recipes-multimedia/wireplumber/wireplumber_%.bbappend
@@ -0,0 +1,4 @@
+WIREPLUMBER_ARAGO = ""
+WIREPLUMBER_ARAGO:arago = "wireplumber-arago.inc"
+
+require ${WIREPLUMBER_ARAGO}
-- 
2.34.1