From 607823982133fa8032c1c85310b119b26df6496c Mon Sep 17 00:00:00 2001
From: Peter Salomonsen <pjsalomonsen@gmail.com>
Date: Fri, 7 Apr 2023 12:09:20 +0200
Subject: [PATCH] script for rendering wasm to raw audio file

---
 renderwasm.mjs            | 8 ++++++++
 templates/wasm/player.wat | 2 ++
 2 files changed, 10 insertions(+)
 create mode 100644 renderwasm.mjs

diff --git a/renderwasm.mjs b/renderwasm.mjs
new file mode 100644
index 0000000..42b0d1f
--- /dev/null
+++ b/renderwasm.mjs
@@ -0,0 +1,8 @@
+import { readFile, writeFile } from 'fs/promises';
+
+const wasm = (await readFile('./temp_song_file.wasm'));
+
+const mod = await WebAssembly.instantiate(wasm, {});
+mod.instance.exports.render();
+const mem = mod.instance.exports.m;
+await writeFile('temp_song_file.raw', new Uint8Array(mem.buffer,mod.instance.exports.s,mod.instance.exports.l));
diff --git a/templates/wasm/player.wat b/templates/wasm/player.wat
index 222a2be..8f3543f 100644
--- a/templates/wasm/player.wat
+++ b/templates/wasm/player.wat
@@ -882,6 +882,8 @@
 
 {{- if  .RenderOnStart }}
 (start $render) ;; we run render automagically when the module is instantiated
+{{- else}}
+(export "render" (func $render))
 {{- end}}
 
 (func $render (param)