Add docker build system

.gitignore

@@ -30,3 +30,6 @@
 *.exe
 *.out
 *.app
+
+# VisualCode config
+.vscode

Dockerfile

@@ -0,0 +1,7 @@
+FROM trzeci/emscripten:sdk-tag-1.38.30-64bit
+
+RUN apt-get update && \
+    apt-get install -y libtool && \
+    apt-get install -y autotools-dev && \
+    apt-get install -y autoconf && \
+    apt-get install -y automake

build.sh

@@ -0,0 +1,53 @@
+#!/bin/bash
+
+set -e
+
+export OPTIMIZE="-Os"
+export LDFLAGS=${OPTIMIZE}
+export CFLAGS=${OPTIMIZE}
+export CXXFLAGS=${OPTIMIZE}
+
+ENTRY_POINT="rnnoise.js"
+
+echo "============================================="
+echo "Compiling wasm bindings"
+echo "============================================="
+(
+  cd rnnoise
+
+  # Clean possible autotools clutter that might affect the configurations step
+  git clean -f -d
+  ./autogen.sh
+
+  # For some reason setting the CFLAGS export doesn't apply optimization to all compilation steps
+  # so we need to explicitly pass it to configure.
+  emconfigure ./configure CFLAGS=${OPTIMIZE}
+  emmake make clean
+  emmake make V=1
+
+  # Compile librnnoise generated LLVM bytecode to wasm
+  emcc \
+    ${OPTIMIZE} \
+    -s STRICT=1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s MALLOC=emmalloc \
+    -s MODULARIZE=1 \
+    -s EXPORT_ES6=1 \
+    -s EXPORTED_FUNCTIONS="['_rnnoise_process_frame', '_rnnoise_init', '_rnnoise_destroy', '_rnnoise_create', '_malloc', '_free']" \
+    .libs/librnnoise.so \
+    -o ./$ENTRY_POINT
+
+  # Create output folder
+  rm -rf ../dist
+  mkdir -p ../dist
+
+  # Move artifacts
+  mv $ENTRY_POINT ../dist/index.js
+  mv rnnoise.wasm ../dist/
+
+  # Clean cluttter
+  git clean -f -d
+)
+echo "============================================="
+echo "Compiling wasm bindings done"
+echo "============================================="

package.json

@@ -0,0 +1,23 @@
+{
+    "name": "rnnoise-wasm",
+    "description": "Rnnoise sub-module compiled with emscripten as web assembly module",
+    "version": "0.0.1",
+    "repository": {
+      "type": "git",
+      "url": "git+https://github.com/andrei-gavrilescu/rnnoise-wasm.git"
+    },
+    "main": "./dist/",
+    "scripts": {
+        "build:dockerimage": "docker image inspect -f '.' emscripten-autotools || docker build -t emscripten-autotools .",
+        "build:emscripten": "docker run --rm -v $(pwd):/src emscripten-autotools bash -x ./build.sh",
+        "build": "npm run build:dockerimage && npm run build:emscripten"
+    },
+    "dependencies": {},
+    "devDependencies": {},
+    "licenses": [
+      {
+        "type": "Apache-2.0",
+        "url": "http://www.apache.org/licenses/LICENSE-2.0"
+      }
+    ]
+  }