dacbert: add stream-audio-to-owncast

hosts/dacbert/default.nix

@@ -1,5 +1,38 @@
 { hostRegistry, config, lib, pkgs, ... }:
 
+let
+  streamAudioToOwncastScript = pkgs.writeScriptBin "stream-audio-to-owncast" ''
+    #! ${pkgs.runtimeShell} -e
+
+    PATH=${with pkgs; lib.makeBinPath [ coreutils pavucontrol gnome.zenity ffmpeg ]}
+
+    MOVIE="$(zenity --file-selection --title 'Select a video to loop')"
+    MOVIE_PREENCODED="/tmp/`basename $MOVIE`.mp4"
+
+    echo
+    echo Preencoding the movie. Wait a bit...
+    echo
+
+    ffmpeg -i "$MOVIE" -an -s:v 480x320 -c:v libx264 -b:v 600k -f mp4 -y "$MOVIE_PREENCODED"
+
+    echo
+    echo "Starting stream. End with <q>"
+    echo
+
+    pavucontrol &
+
+    ffmpeg -f pulse -ac 2 -i default -stream_loop -1 -i "$MOVIE_PREENCODED" -c:a aac -c:v copy -f flv rtmp://owncast.serv.zentralwerk.org:1935/live/$(cat ${config.sops.secrets."owncast/authKey".path})
+  '';
+
+  streamAudioToOwncast = pkgs.makeDesktopItem rec {
+    name = "Stream to Owncast";
+    exec = "${streamAudioToOwncastScript}/bin/stream-audio-to-owncast";
+    icon = "media-record";
+    desktopName = name;
+    terminal = true;
+  };
+
+in
 {
   c3d2 = {
     isInHq = true;
@@ -20,6 +53,11 @@
     } ];
   };
 
+  sops = {
+    defaultSopsFile = ./secrets.yaml;
+    secrets."owncast/authKey".owner = "k-ot";
+  };
+
   hardware.enableRedistributableFirmware = true;
   powerManagement.cpuFreqGovernor = lib.mkDefault "performance";
 
@@ -131,6 +169,7 @@
       bevy_julia
       bevy_mandelbrot
       allcolors
+      streamAudioToOwncast
     ];
   };
 

hosts/dacbert/secrets.yaml

@@ -0,0 +1,181 @@
+owncast:
+    authKey: ENC[AES256_GCM,data:Q0Zx9g==,iv:3RB7efC9t6SXEP4/yR5Or/f3GN820RiApqTJC0G5zaw=,tag:UaiJAdGefjuwVd3gGwTXTg==,type:str]
+sops:
+    kms: []
+    gcp_kms: []
+    azure_kv: []
+    hc_vault: []
+    age:
+        - recipient: age1hg0mmua5y82ct7l6q9gpc8w940ce5seqcjhm4dgx7tlzvflznyas7v3hf4
+          enc: |
+            -----BEGIN AGE ENCRYPTED FILE-----
+            YWdlLWVuY3J5cHRpb24ub3JnL3YxCi0+IFgyNTUxOSBLQ1l6MkNscFl3b0FReENC
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+            -----END AGE ENCRYPTED FILE-----
+        - recipient: age12aukzah0pt2rck52hwn08kezyxueqz2f49ld7hpyuzmu847vavdqkunn5c
+          enc: |
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+    lastmodified: "2022-12-04T21:39:27Z"
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