tidalcycles · felixroos · Jan 10, 2024 · Jan 10, 2024 · Jan 10, 2024 · Jan 10, 2024
diff --git a/.prettierignore b/.prettierignore
@@ -10,4 +10,5 @@ paper
 pnpm-lock.yaml
 pnpm-workspace.yaml
 **/dev-dist
+superdough-wasm
 website/.astro
diff --git a/packages/superdough-wasm/.gitignore b/packages/superdough-wasm/.gitignore
@@ -0,0 +1 @@
+rustsaw/target
diff --git a/packages/superdough-wasm/README.md b/packages/superdough-wasm/README.md
@@ -0,0 +1,57 @@
+# superdough-wasm
+
+This is just a very early experiment to find out how to run wasm in an AudioWorklet.
+WASM can be compiled from several languages, which are tested here..
+
+## zig
+
+<https://dev.to/sleibrock/webassembly-with-zig-part-1-4onm>
+
+```sh
+# (re)compile dsp.zig
+brew install zig # prequisite
+cd zigsaw
+zig build-lib zigsaw.zig -target wasm32-freestanding -dynamic -rdynamic -O ReleaseSmall # build
+npx http-server .. -o # run 
+```
+
+wasm file size: 690B
+
+## rust
+
+<https://developer.mozilla.org/en-US/docs/WebAssembly/Rust_to_Wasm>
+
+```sh
+# https://www.rust-lang.org/tools/install
+cargo install wasm-pack # prequisite
+cd rustsaw
+wasm-pack build --target bundler # build
+npx http-server .. -o # run
+```
+
+wasm file size: 653B
+
+## c
+
+<https://emscripten.org/docs/getting_started/Tutorial.html>
+
+```sh
+# brew install emscripten
+cd csaw
+emcc -O2 csaw.c -o csaw # build
+npx http-server .. -o
+```
+
+wasm file size: 680B
+
+## assemblyscript
+
+<https://www.assemblyscript.org/getting-started.html#setting-up-a-new-project>
+
+```sh
+cd ascsaw
+# npm i
+npm run asbuild # build
+```
+
+wasm file size: 122B !
diff --git a/packages/superdough-wasm/ascsaw/asconfig.json b/packages/superdough-wasm/ascsaw/asconfig.json
@@ -0,0 +1,22 @@
+{
+  "targets": {
+    "debug": {
+      "outFile": "build/debug.wasm",
+      "textFile": "build/debug.wat",
+      "sourceMap": true,
+      "debug": true
+    },
+    "release": {
+      "outFile": "build/release.wasm",
+      "textFile": "build/release.wat",
+      "sourceMap": true,
+      "optimizeLevel": 3,
+      "shrinkLevel": 2,
+      "converge": false,
+      "noAssert": false
+    }
+  },
+  "options": {
+    "bindings": "esm"
+  }
+}
diff --git a/packages/superdough-wasm/ascsaw/assembly/index.ts b/packages/superdough-wasm/ascsaw/assembly/index.ts
@@ -0,0 +1,3 @@
+export function saw(t: f64, f: f64): f64 {
+  return (((f * t * 1.0) % 1.0) - 0.5) * 2.0;
+}
diff --git a/packages/superdough-wasm/ascsaw/assembly/tsconfig.json b/packages/superdough-wasm/ascsaw/assembly/tsconfig.json
@@ -0,0 +1,6 @@
+{
+  "extends": "assemblyscript/std/assembly.json",
+  "include": [
+    "./**/*.ts"
+  ]
+}
diff --git a/packages/superdough-wasm/ascsaw/build/.gitignore b/packages/superdough-wasm/ascsaw/build/.gitignore
@@ -0,0 +1,2 @@
+*
+!.gitignore
diff --git a/packages/superdough-wasm/ascsaw/package-lock.json b/packages/superdough-wasm/ascsaw/package-lock.json
diff --git a/packages/superdough-wasm/ascsaw/package.json b/packages/superdough-wasm/ascsaw/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "ascsaw",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "node tests",
+    "asbuild:debug": "asc assembly/index.ts --target debug",
+    "asbuild:release": "asc assembly/index.ts --target release",
+    "asbuild": "npm run asbuild:debug && npm run asbuild:release",
+    "start": "npx serve ."
+  },
+  "author": "",
+  "license": "ISC",
+  "devDependencies": {
+    "assemblyscript": "^0.27.22"
+  },
+  "type": "module",
+  "exports": {
+    ".": {
+      "import": "./build/release.js",
+      "types": "./build/release.d.ts"
+    }
+  }
+}
diff --git a/packages/superdough-wasm/csaw/.gitignore b/packages/superdough-wasm/csaw/.gitignore
@@ -0,0 +1 @@
+csaw
diff --git a/packages/superdough-wasm/csaw/csaw.c b/packages/superdough-wasm/csaw/csaw.c
@@ -0,0 +1,7 @@
+#include <math.h>
+#include <emscripten.h>
+
+EMSCRIPTEN_KEEPALIVE
+double saw(double t, double f) {
+    return fmod((f * t * 1.0), 1.0) - 0.5 * 2.0;
+}
diff --git a/packages/superdough-wasm/csaw/csaw.wasm b/packages/superdough-wasm/csaw/csaw.wasm
diff --git a/packages/superdough-wasm/index.html b/packages/superdough-wasm/index.html
@@ -0,0 +1,11 @@
+<!doctype html>
+<html>
+  <head>
+    <title>WASM AudioWorklet Demo</title>
+  </head>
+  <body>
+    <button id="play">play</button>
+    <input type="range" min="55" max="880" id="freq" />
+  </body>
+  <script src="./main.js"></script>
+</html>
diff --git a/packages/superdough-wasm/main.js b/packages/superdough-wasm/main.js
@@ -0,0 +1,24 @@
+let ac;
+document.getElementById('play').addEventListener('click', async () => {
+  ac = ac || new AudioContext();
+  await ac.resume();
+  await ac.audioWorklet.addModule('./worklet.js');
+  const node = new AudioWorkletNode(ac, 'saw-processor');
+
+  //let res = await fetch('./zigsaw/zigsaw.wasm');
+  // let res = await fetch('./csaw/csaw.wasm');
+  let res = await fetch('./ascsaw/build/release.wasm');
+  //let res = await fetch('./rustsaw/pkg/rustsaw_bg.wasm');
+  const buffer = await res.arrayBuffer();
+  node.port.onmessage = (e) => {
+    if (e.data === 'OK') {
+      console.log('worklet ready');
+    }
+  };
+  node.port.postMessage({ webassembly: buffer });
+  node.connect(ac.destination);
+
+  document.getElementById('freq').addEventListener('input', async (e) => {
+    node.port.postMessage({ frequency: e.target.value });
+  });
+});
diff --git a/packages/superdough-wasm/rustsaw/Cargo.lock b/packages/superdough-wasm/rustsaw/Cargo.lock
diff --git a/packages/superdough-wasm/rustsaw/Cargo.toml b/packages/superdough-wasm/rustsaw/Cargo.toml
@@ -0,0 +1,13 @@
+[package]
+name = "rustsaw"
+version = "0.1.0"
+authors = ["Your Name <[email protected]>"]
+description = "A sample project with wasm-pack"
+license = "MIT/Apache-2.0"
+edition = "2018"
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+wasm-bindgen = "0.2"
diff --git a/packages/superdough-wasm/rustsaw/src/lib.rs b/packages/superdough-wasm/rustsaw/src/lib.rs
@@ -0,0 +1,6 @@
+use wasm_bindgen::prelude::*;
+
+#[wasm_bindgen]
+pub fn saw(t: f64, f: f64) -> f64 {
+    return (((f * t * 1.0) % 1.0) - 0.5) * 2.0;
+}