From 07f7414038e7cf188626826e240d0eef730af457 Mon Sep 17 00:00:00 2001
From: Sanchayan Maity <sanchayan@sanchayanmaity.net>
Date: Fri, 3 May 2024 15:37:10 +0530
Subject: [PATCH] wireplumber: Add equalizer for 7HZ Zero2

---
 .../wireplumber.conf.d/custom.conf            |   5 +
 .../wireplumber/scripts/equalizer/zero2.lua   | 111 ++++++++++++++++++
 2 files changed, 116 insertions(+)
 create mode 100644 wireplumber/.local/share/wireplumber/scripts/equalizer/zero2.lua

diff --git a/wireplumber/.config/wireplumber/wireplumber.conf.d/custom.conf b/wireplumber/.config/wireplumber/wireplumber.conf.d/custom.conf
index 87e29bd..735b237 100644
--- a/wireplumber/.config/wireplumber/wireplumber.conf.d/custom.conf
+++ b/wireplumber/.config/wireplumber/wireplumber.conf.d/custom.conf
@@ -7,12 +7,17 @@ wireplumber.components = [
     name = equalizer/input-denoise.lua, type = script/lua
     provides = equalizer.input-denoise
   }
+  {
+    name = equalizer/zero2.lua, type = script/lua
+    provides = equalizer.zero2
+  }
 ]
 
 wireplumber.profiles = {
   main = {
     equalizer.dt770         = required
     equalizer.input-denoise = required
+    equalizer.zero2         = required
   }
 }
 
diff --git a/wireplumber/.local/share/wireplumber/scripts/equalizer/zero2.lua b/wireplumber/.local/share/wireplumber/scripts/equalizer/zero2.lua
new file mode 100644
index 0000000..6717960
--- /dev/null
+++ b/wireplumber/.local/share/wireplumber/scripts/equalizer/zero2.lua
@@ -0,0 +1,111 @@
+-- Generated by EQ'ing Zero2 frequency response to the Diffuse Field
+-- target curve on crinacle.com.
+-- luacheck: ignore 111 113
+local args = {
+  ["node.description"] = "7HZ Zero2 Equalizer Sink",
+  ["media.name"]       = "7HZ Zero2 Equalizer Sink",
+  ["audio.position"]   = Json.Array { "FL", "FR" },
+  ["audio.channels"]   = 2,
+}
+
+args["filter.graph"] = Json.Object {
+  nodes = Json.Array {
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_1",
+      label   = "bq_highshelf",
+      control = Json.Object { Freq = 0, Gain = -5.1, Q = 1.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_2",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 20, Gain = -2.8, Q = 2.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_3",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 28, Gain = -12.0, Q = 0.5 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_4",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 32, Gain = 0.8, Q = 1.8 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_5",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 120, Gain = -2.9, Q = 0.5 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_6",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 210, Gain = -0.9, Q = 1.8 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_7",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 390, Gain = 1.3, Q = 2.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_8",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 1600, Gain = -2.3, Q = 1.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_9",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 2900, Gain = 1.9, Q = 2.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_10",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 12000, Gain = -8.1, Q = 2.0 },
+    },
+    Json.Object {
+      type    = "builtin",
+      name    = "eq_band_11",
+      label   = "bq_peaking",
+      control = Json.Object { Freq = 13000, Gain = 7.8, Q = 0.5 },
+    },
+  },
+  links = Json.Array {
+    Json.Object { output = "eq_band_1:Out" , input = "eq_band_2:In"  },
+    Json.Object { output = "eq_band_2:Out" , input = "eq_band_3:In"  },
+    Json.Object { output = "eq_band_3:Out" , input = "eq_band_4:In"  },
+    Json.Object { output = "eq_band_4:Out" , input = "eq_band_5:In"  },
+    Json.Object { output = "eq_band_5:Out" , input = "eq_band_6:In"  },
+    Json.Object { output = "eq_band_6:Out" , input = "eq_band_7:In"  },
+    Json.Object { output = "eq_band_7:Out" , input = "eq_band_8:In"  },
+    Json.Object { output = "eq_band_8:Out" , input = "eq_band_9:In"  },
+    Json.Object { output = "eq_band_9:Out" , input = "eq_band_10:In" },
+    Json.Object { output = "eq_band_10:Out", input = "eq_band_11:In" },
+  },
+}
+
+args["capture.props"] = Json.Object {
+  ["node.name"]   = "zero2_effect_input.eq11",
+  ["media.class"] = "Audio/Sink",
+}
+
+args["playback.props"] = Json.Object {
+  ["node.name"]    = "zero2_effect_output.eq11",
+  ["node.passive"] = true,
+}
+
+local args_json   = Json.Object(args)
+local args_string = args_json:get_data()
+local properties  = {}
+
+print("Loading 7HZ Zero2 Equalizer Sink with arguments = ")
+print(args_string)
+
+filter_chain = LocalModule("libpipewire-module-filter-chain", args_string, properties)