wireplumber: Create new recipe for policy daemon

-carve out a new recipe for wireplumber policy, so that it
 can be assigned to the concerned container.
-create new packagegroup-pipewire-base capturing the set of
 packages required to use PipeWire API.
-remove the implicit dependencies between different wireplumber
 recipes, now each of those recipes will have to be included
 in the top level bb file.
-remove the wireplumber-config virtual package.

Bug-AGL: SPEC-4100
Signed-off-by: Ashok Sidipotu <ashok.sidipotu@collabora.com>
Change-Id: I8ff6834c5dae94b75e07a0709c403b5d7f3b274b
Reviewed-on: https://gerrit.automotivelinux.org/gerrit/c/AGL/meta-agl/+/27254
Reviewed-by: Jan-Simon Moeller <jsmoeller@linuxfoundation.org>
Tested-by: Jenkins Job builder account

3 files changed, 237 insertions, 0 deletions

diff --git a/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/00-functions.lua b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/00-functions.lua
new file mode 100644
index 000000000..7e1794df0
--- /dev/null
+++ b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/00-functions.lua
@@ -0,0 +1,27 @@
+components = {}
+
+function load_module(m)
+  if not components[m] then
+    components[m] = { "libwireplumber-module-" .. m, type = "module" }
+  end
+end
+
+function load_pw_module(m)
+  if not components[m] then
+    components[m] = { "libpipewire-module-" .. m, type = "pw_module" }
+  end
+end
+
+function load_script(s, a)
+  if not components[s] then
+    components[s] = { s, type = "script/lua", args = a }
+  end
+end
+
+function load_monitor(s, a)
+  load_script("monitors/" .. s .. ".lua", a)
+end
+
+function load_access(s, a)
+  load_script("access/access-" .. s .. ".lua", a)
+end
diff --git a/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.conf b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.conf
new file mode 100644
index 000000000..42f714849
--- /dev/null
+++ b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.conf
@@ -0,0 +1,73 @@
+# WirePlumber daemon context configuration #
+
+context.properties = {
+  ## Properties to configure the PipeWire context and some modules
+
+  application.name = "WirePlumber Policy"
+  log.level = 2
+  wireplumber.script-engine = lua-scripting
+  wireplumber.export-core = false
+
+  #mem.mlock-all = false
+  #support.dbus  = true
+}
+
+context.spa-libs = {
+  #<factory-name regex> = <library-name>
+  #
+  # Used to find spa factory names. It maps an spa factory name
+  # regular expression to a library name that should contain
+  # that factory.
+  #
+  audio.convert.* = audioconvert/libspa-audioconvert
+  support.*       = support/libspa-support
+}
+
+context.modules = [
+  #{   name = <module-name>
+  #    [ args = { <key> = <value> ... } ]
+  #    [ flags = [ [ ifexists ] [ nofail ] ]
+  #}
+  #
+  # PipeWire modules to load.
+  # If ifexists is given, the module is ignored when it is not found.
+  # If nofail is given, module initialization failures are ignored.
+  #
+
+  # The native communication protocol.
+  { name = libpipewire-module-protocol-native }
+
+  # Allows creating nodes that run in the context of the
+  # client. Is used by all clients that want to provide
+  # data to PipeWire.
+  { name = libpipewire-module-client-node }
+
+  # Allows creating devices that run in the context of the
+  # client. Is used by the session manager.
+  { name = libpipewire-module-client-device }
+
+  # Makes a factory for wrapping nodes in an adapter with a
+  # converter and resampler.
+  { name = libpipewire-module-adapter }
+
+  # Allows applications to create metadata objects. It creates
+  # a factory for Metadata objects.
+  { name = libpipewire-module-metadata }
+
+  # Provides factories to make session manager objects.
+  { name = libpipewire-module-session-manager }
+]
+
+wireplumber.components = [
+  #{ name = <component-name>, type = <component-type> }
+  #
+  # WirePlumber components to load
+  #
+
+  # The lua scripting engine
+  { name = libwireplumber-module-lua-scripting, type = module }
+
+  # The lua configuration file
+  # Other components are loaded from there
+  { name = policy.lua, type = config/lua }
+]
diff --git a/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.lua.d/10-default-policy.lua b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.lua.d/10-default-policy.lua
new file mode 100644
index 000000000..e6170dd1c
--- /dev/null
+++ b/meta-pipewire/recipes-multimedia/wireplumber/wireplumber-policy-config-agl/policy.lua.d/10-default-policy.lua
@@ -0,0 +1,137 @@
+-- Policy config file --
+
+policy_config = {}
+
+policy_config.endpoints = {
+  -- [endpoint name] = { endpoint properties }
+  ["endpoint.capture"] = {
+    ["media.class"] = "Audio/Source",
+    ["role"] = "Capture",
+  },
+  ["endpoint.multimedia"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Multimedia",
+  },
+  ["endpoint.speech_low"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Speech-Low",
+  },
+  ["endpoint.custom_low"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Custom-Low",
+  },
+  ["endpoint.navigation"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Navigation",
+  },
+  ["endpoint.speech_high"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Speech-High",
+  },
+  ["endpoint.custom_high"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Custom-High",
+  },
+  ["endpoint.communication"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Communication",
+  },
+  ["endpoint.emergency"] = {
+    ["media.class"] = "Audio/Sink",
+    ["role"] = "Emergency",
+  },
+}
+
+policy_config.policy = {
+  ["move"] = false,  -- moves session items when metadata target.node changes
+  ["follow"] = true, -- moves session items to the default device when it has changed
+
+  -- Set to 'true' to disable channel splitting & merging on nodes and enable
+  -- passthrough of audio in the same format as the format of the device.
+  -- Note that this breaks JACK support; it is generally not recommended
+  ["audio.no-dsp"] = false,
+
+  -- how much to lower the volume of lower priority streams when ducking
+  -- note that this is a linear volume modifier (not cubic as in pulseaudio)
+  ["duck.level"] = 0.2,
+
+  ["roles"] = {
+    ["Capture"] = {
+      ["alias"] = { "Multimedia", "Music", "Voice", "Capture" },
+      ["priority"] = 25,
+      ["action.default"] = "cork",
+      ["action.Capture"] = "mix",
+      ["media.class"] = "Audio/Source",
+    },
+    ["Multimedia"] = {
+      ["alias"] = { "Movie", "Music", "Game" },
+      ["priority"] = 25,
+      ["action.default"] = "cork",
+    },
+    ["Speech-Low"] = {
+      ["priority"] = 30,
+      ["action.default"] = "cork",
+      ["action.Speech-Low"] = "mix",
+    },
+    ["Custom-Low"] = {
+      ["priority"] = 35,
+      ["action.default"] = "cork",
+      ["action.Custom-Low"] = "mix",
+    },
+    ["Navigation"] = {
+      ["priority"] = 50,
+      ["action.default"] = "duck",
+      ["action.Navigation"] = "mix",
+    },
+    ["Speech-High"] = {
+      ["priority"] = 60,
+      ["action.default"] = "cork",
+      ["action.Speech-High"] = "mix",
+    },
+    ["Custom-High"] = {
+      ["priority"] = 65,
+      ["action.default"] = "cork",
+      ["action.Custom-High"] = "mix",
+    },
+    ["Communication"] = {
+      ["priority"] = 75,
+      ["action.default"] = "cork",
+      ["action.Communication"] = "mix",
+    },
+    ["Emergency"] = {
+      ["alias"] = { "Alert" },
+      ["priority"] = 99,
+      ["action.default"] = "cork",
+      ["action.Emergency"] = "mix",
+    },
+  },
+}
+
+-- Session item factories, building blocks for the session management graph
+-- Do not disable these unless you really know what you are doing
+load_module("si-node")
+load_module("si-audio-adapter")
+load_module("si-standard-link")
+load_module("si-audio-endpoint")
+
+-- API to access default nodes from scripts
+load_module("default-nodes-api")
+
+-- API to access mixer controls, needed for volume ducking
+load_module("mixer-api")
+
+-- Create endpoints statically at startup
+load_script("static-endpoints.lua", policy_config.endpoints)
+
+-- Create session items for nodes that appear in the graph
+load_script("create-item.lua", policy_config.policy)
+
+-- Link nodes to each other to make media flow in the graph
+load_script("policy-node.lua", policy_config.policy)
+
+-- Link client nodes with endpoints to make media flow in the graph
+load_script("policy-endpoint-client.lua", policy_config.policy)
+load_script("policy-endpoint-client-links.lua", policy_config.policy)
+
+-- Link endpoints with device nodes to make media flow in the graph
+load_script("policy-endpoint-device.lua", policy_config.policy)