From 46a4a8245ea21ec3e7cece687f782712b6863ca7 Mon Sep 17 00:00:00 2001
From: Simon Bruder <simon@sbruder.de>
Date: Sun, 4 Oct 2020 12:05:19 +0200
Subject: [PATCH] Add chiptune-mix

---
 chiptune-mix.sh | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)
 create mode 100755 chiptune-mix.sh

diff --git a/chiptune-mix.sh b/chiptune-mix.sh
new file mode 100755
index 0000000..20466db
--- /dev/null
+++ b/chiptune-mix.sh
@@ -0,0 +1,16 @@
+#!/usr/bin/env nix-shell
+#!nix-shell -i bash -p sidplayfp ffmpeg-full
+# Creates 4-channel flac file to be played with mpv profile “musicvideo-c64”
+# Set HVSC_BASE to point to your HVSC directory, otherwise the output
+# will be 2 seconds long
+if [ "$#" != "2" ]; then
+    exit 1
+fi
+
+sidplayfp -w"${2}" "$1"
+sidplayfp -u2 -u3 -w"${2}1" "$1"
+sidplayfp -u1 -u3 -w"${2}2" "$1"
+sidplayfp -u1 -u2 -w"${2}3" "$1"
+
+# order is pretty much fucked up, thank you whatever is causing this
+ffmpeg -i "${2}2.wav" -i "${2}.wav" -i "${2}1.wav" -i "${2}3.wav" -filter_complex 'join=inputs=4:channel_layout=4.0,volume=2' "${2}.flac"