From 0b97afa7ce2bad516c0f17d31f8aee0feda86813 Mon Sep 17 00:00:00 2001
From: Jakob Lechner <mail@jalr.de>
Date: Tue, 23 May 2023 14:39:31 +0000
Subject: [PATCH] Revert "Split UMC202HD inputs into mono channels"

This reverts commit d2b01eaf44f9c6a048d2082db8e4c1b2a28ab608.

pipewire-media-session is no longer supported upstream and has been removed
---
 modules/pipewire.nix                          | 44 -------------------
 .../pulseaudio_mute_indicator/service.py      | 20 ++++-----
 2 files changed, 10 insertions(+), 54 deletions(-)

diff --git a/modules/pipewire.nix b/modules/pipewire.nix
index 6e213bd..8c78a7c 100644
--- a/modules/pipewire.nix
+++ b/modules/pipewire.nix
@@ -1,10 +1,5 @@
 { config, lib, pkgs, ... }:
 
-let
-  defaults = {
-    media-session = (builtins.fromJSON (builtins.readFile "${pkgs.pipewire-media-session}/nix-support/media-session.conf.json"));
-  };
-in
 lib.mkIf config.myConfig.gui.enable {
   sound.enable = true;
   hardware.pulseaudio.enable = false;
@@ -40,43 +35,4 @@ lib.mkIf config.myConfig.gui.enable {
       value = "unlimited";
     }
   ];
-
-  # Split U-PHORIA inputs into mono channels
-  # https://gitlab.freedesktop.org/pipewire/pipewire/-/wikis/Virtual-Devices#behringer-umc404hd-micguitar-virtual-sources
-  services.pipewire.media-session.config.media-session."context.modules" = defaults.media-session."context.modules" ++ [
-    {
-      name = "libpipewire-module-loopback";
-      args = {
-        "node.name" = "UMC202HD_input1";
-        "node.description" = "UMC202HD Input 1";
-        "capture.props" = {
-          "audio.position" = [ "AUX0" ];
-          "stream.dont-remix" = true;
-          "node.target" = "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.pro-input-0";
-          "node.passive" = true;
-        };
-        "playback.props" = {
-          "media.class" = "Audio/Source";
-          "audio.position" = [ "MONO" ];
-        };
-      };
-    }
-    {
-      name = "libpipewire-module-loopback";
-      args = {
-        "node.name" = "UMC202HD_input2";
-        "node.description" = "UMC202HD Input 2";
-        "capture.props" = {
-          "audio.position" = [ "AUX1" ];
-          "stream.dont-remix" = true;
-          "node.target" = "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.pro-input-0";
-          "node.passive" = true;
-        };
-        "playback.props" = {
-          "media.class" = "Audio/Source";
-          "audio.position" = [ "MONO" ];
-        };
-      };
-    }
-  ];
 }
diff --git a/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py b/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
index cb5feaf..0ef8e51 100644
--- a/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
+++ b/pkgs/mute-indicator/pulseaudio_mute_indicator/service.py
@@ -3,25 +3,25 @@ import serial
 
 
 def run():
-    source_to_led_mapping = {
-        "UMC202HD_input1": 0,
-        "UMC202HD_input2": 1,
-    }
-
     with pulsectl.Pulse("event-printer") as pulse:
 
         def print_events(ev):
             with pulsectl.Pulse("event-source-info") as pulse2:
                 source = pulse2.source_info(ev.index)
-            if source.name in source_to_led_mapping.keys():
+            if source.name in [
+                "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.analog-stereo",
+                "alsa_input.usb-BEHRINGER_UMC202HD_192k-00.analog-stereo-input",
+            ]:
                 muted = bool(source.mute)
-                led = source_to_led_mapping[source.name]
                 with serial.Serial(port="/dev/mute-indicator", baudrate=115200) as ser:
                     if muted:
-                        ser.write(f"L{led}:32,0,0\n".encode())
+                        ser.write("L0:32,0,0\n".encode())
+                        ser.write("L1:32,0,0\n".encode())
+                        ser.write("S\n".encode())
                     else:
-                        ser.write(f"L{led}:0,32,0\n".encode())
-                    ser.write("S\n".encode())
+                        ser.write("L0:0,32,0\n".encode())
+                        ser.write("L1:0,32,0\n".encode())
+                        ser.write("S\n".encode())
 
         pulse.event_mask_set("source")
         pulse.event_callback_set(print_events)