subsystem: add audio dir

Add audio dir with ContaineFile with all packages required for
quadlets when the subject is add initial audio support.

Signed-off-by: Douglas Schilling Landgraf <[email protected]>

README.md

@@ -211,36 +211,9 @@ git clone https://github.com/containers/qm.git && cd qm
 make qm_dropin_mount_bind_sound
 sudo dnf install -y rpmbuild/RPMS/noarch/qm_mount_bind_sound-0.6.7-1.fc40.noarch.rpm
 
-# To check if your system is using PulseAudio: pactl info
-$ pactl info
-Server String: /run/user/1000/pulse/native
-Library Protocol Version: 35
-Server Protocol Version: 35
-Is Local: yes
-Client Index: 118
-Tile Size: 65472
-User Name: douglas
-Host Name: fedora
-Server Name: PulseAudio (on PipeWire 1.0.8)
-Server Version: 15.0.0
-Default Sample Specification: float32le 2ch 48000Hz
-Default Channel Map: front-left,front-right
-Default Sink: alsa_output.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp__sink
-Default Source: alsa_input.pci-0000_00_1f.3-platform-skl_hda_dsp_generic.HiFi__hw_sofhdadsp_6__source
-Cookie: 9108:667a
-
-# Install PuseAudio (pactl) and alsa-utils (aplay) in the QM partition
-sudo dnf --installroot /usr/lib/qm/rootfs install pulseaudio-utils alsa-utils -y
-
 # Restart QM container (if already running)
 sudo podman restart qm
 
-# Showing /dev/snd data inside QM
-sudo podman exec -it qm bash
-controlC0  hwC0D0  hwC1D2    pcmC0D7p  pcmC0D9p  pcmC1D0p   pcmC1D3p  pcmC1D5p pcmC1D7c  timer
-controlC1  hwC1D0  pcmC0D3p  pcmC0D8p  pcmC1D0c  pcmC1D31p  pcmC1D4p  pcmC1D6c seq
-```
-
 ### Step 2: Identify Sound Cards
 
 After installing the drop-in and restarting QM, you need to identify which sound card in the Linux system will be used in QM. If you're familiar with your sound card setup feel free to skip this step.
@@ -301,19 +274,25 @@ Inside QM, run the following command:
 
 ```bash
 podman exec -it qm bash
+bash-# podman ps
+CONTAINER ID  IMAGE                           COMMAND         CREATED      STATUS      PORTS       NAMES
+76dacaa9a89e  quay.io/qm-images/audio:latest  sleep infinity  7 hours ago  Up 7 hours              systemd-audio
+
+
+bash-# podman exec -it systemd-audio bash
+
+Execute the audio test within the nested container, and the sound will be output through the physical speakers of your computer—or, in this case, the car's multimedia soundbox.
 bash-# speaker-test -D hw:1,0 -c 2 -r 48000
 ```
 
-This command runs a test with:
+Params:
 
 ```bash
 hw:1,0: sound card 1, device 0
 -c 2: two channels (stereo)
 -r 48000: sample rate of 48 kHz
 ```
 
-If you want to test different sample rates, change the `-r` parameter to other values (e.g., 44100 for 44.1 kHz or 96000 for 96 kHz) to see which ones are supported by the hardware.
-
 ## Creating your own drop-in QM sub-package
 
 We recommend using the existing drop-in files as a guide and adapting them to your specific needs. However, here are the step-by-step instructions:

rpm/qm.spec

@@ -45,7 +45,7 @@
 ###########################################
 # subpackage QM - ROS2 Rolling version    #
 ###########################################
-%define enable_qm_ros2_rolling 1%{?u_enable_qm_ros2_rolling}
+%define enable_qm_ros2_rolling 0%{?u_enable_qm_ros2_rolling}
 
 ###########################################
 # subpackage QM - mount bind /dev/ttyUSB0 #
@@ -158,9 +158,9 @@ sed -i 's/^install: man all/install:/' Makefile
 %install
 # Create the directory for drop-in configurations
 install -d %{buildroot}%{_sysconfdir}/containers/containers.conf.d
+install -d %{buildroot}%{rootfs_qm}%{_sysconfdir}/containers/systemd
 install -d %{buildroot}%{_sysconfdir}/qm/containers/containers.conf.d
 
-
 ####################################################################
 ################# QM Window Manager ################################
 ####################################################################
@@ -241,7 +241,8 @@ install -d %{buildroot}%{_sysconfdir}/qm/containers/containers.conf.d
 %if %{enable_qm_mount_bind_sound}
     # first step - add drop-in file in /etc/containers/containers.d.conf/qm_dropin_mount_bind_snd.conf
     # to QM container mount bind /dev/snd
-    install -m 644 %{_builddir}/qm-%{version}/etc/qm/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf %{buildroot}%{_sysconfdir}/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf
+    install -m 644 %{_builddir}/qm-%{version}/subsystems/audio/audio.container %{buildroot}%{rootfs_qm}%{_sysconfdir}/containers/systemd/audio.container
+    install -m 644 %{_builddir}/qm-%{version}%{_sysconfdir}/qm/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf %{buildroot}%{_sysconfdir}/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf
 
     # second step - add drop-in file in /etc/qm/containers/containers.d.conf/qm_dropin/mount_bind_snd.conf
     # to nested containers in QM env mount bind it in /dev/snd
@@ -479,6 +480,7 @@ additional drop-in configurations.
 %files -n qm_mount_bind_sound
 %{_sysconfdir}/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf
 %{_sysconfdir}/qm/containers/containers.conf.d/qm_dropin_mount_bind_snd.conf
+%{rootfs_qm}%{_sysconfdir}/containers/systemd/audio.container
 %endif
 
 #######################################

subsystems/audio/ContainerFile

@@ -0,0 +1,12 @@
+# ContainerFile used to create the image available at quay.io/qm-images/audio:latest
+#
+# How to build
+# ==================
+# podman login quay.io
+# podman build -t quay.io/qm-images/audio:latest -f ContainerFile
+# podman push quay.io/qm-images/audio:latest
+FROM fedora:latest
+
+RUN dnf -y install pulseaudio-utils alsa-utils procps-ng wireplumber pavucontrol \
+    && dnf clean all && rm -rf /var/cache/dnf
+CMD ["sleep", "infinity"]

subsystems/audio/audio.container

@@ -0,0 +1,9 @@
+[Unit]
+Description=Audio Container
+After=network.target
+
+[Container]
+Image=quay.io/qm-images/audio:latest
+
+[Install]
+WantedBy=multi-user.target