Add WebAssembly + NodeJS example.

.github/workflows/nodejs.yaml

@@ -1,24 +1,16 @@
 name: nodejs
 
 on:
-  push:
-    branches:
-      - master
-    paths:
-      - '.github/workflows/nodejs.yaml'
-      - 'CMakeLists.txt'
-      - 'cmake/**'
-      - 'nodejs-examples/**'
-      - 'sherpa-ncnn/csrc/*'
-  pull_request:
-    branches:
-      - master
-    paths:
-      - '.github/workflows/nodejs.yaml'
-      - 'CMakeLists.txt'
-      - 'cmake/**'
-      - 'nodejs-examples/**'
-      - 'sherpa-ncnn/csrc/*'
+  workflow_dispatch:
+
+  schedule:
+    # minute (0-59)
+    # hour (0-23)
+    # day of the month (1-31)
+    # month (1-12)
+    # day of the week (0-6)
+    # nightly test at 22:50 UTC time every day
+    - cron: "50 22 * * *"
 
 concurrency:
   group: nodejs-${{ github.ref }}
@@ -33,63 +25,48 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest, macos-latest, windows-latest]
         python-version: ["3.8"]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
 
       - name: Setup Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ matrix.python-version }}
 
-      - uses: actions/setup-node@v3
+      - uses: actions/setup-node@v4
         with:
-          node-version: 13
+          registry-url: 'https://registry.npmjs.org'
 
       - name: Display node version
         shell: bash
         run: |
           node --version
-          npm --version
-          cd nodejs-examples
-
-          npm install [email protected] -g
-          npm install [email protected]
-          npm --version
 
       - name: Install npm packages
         shell: bash
         run: |
           cd nodejs-examples
-          npm install ffi-napi ref-struct-napi wav
+          npm install npm
+          npm --version
           npm list
 
-      - name: ccache
-        uses: hendrikmuhs/[email protected]
-        with:
-          key: ${{ matrix.os }}-shared
-
       - name: Download model
         shell: bash
         run: |
           cd nodejs-examples
-          GIT_LFS_SKIP_SMUDGE=1 git clone https://huggingface.co/csukuangfj/sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13
-          cd sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13
-          git lfs pull --include "*.bin"
-          ls -lh
+
+          curl -OL https://github.com/k2-fsa/sherpa-ncnn/releases/download/models/sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+          tar xvf sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+          rm sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+          ls -lh sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13
 
       - name: Test
         shell: bash
         run: |
-          export CMAKE_CXX_COMPILER_LAUNCHER=ccache
-          export PATH="/usr/lib/ccache:/usr/local/opt/ccache/libexec:$PATH"
-          cmake --version
-
           cd nodejs-examples
-          ls -lh
-
-          ./run.sh
+          node ./decode-file.js

.github/workflows/npm.yaml

@@ -0,0 +1,86 @@
+name: npm
+
+on:
+  workflow_dispatch:
+
+concurrency:
+  group: npm-${{ github.ref }}
+  cancel-in-progress: true
+
+permissions:
+  contents: read
+  id-token: write
+
+jobs:
+  nodejs:
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest]
+        python-version: ["3.8"]
+
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Install emsdk
+        uses: mymindstorm/setup-emsdk@v14
+
+      - name: View emsdk version
+        shell: bash
+        run: |
+          emcc -v
+          echo "--------------------"
+          emcc --check
+
+      - name: Setup Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - uses: actions/setup-node@v4
+        with:
+          registry-url: 'https://registry.npmjs.org'
+
+      - name: Display node version
+        shell: bash
+        run: |
+          node --version
+          npm --version
+
+          cd nodejs-examples
+          npm install npm
+          npm --version
+
+      - name: Build nodejs package
+        shell: bash
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}
+        run: |
+          ./build-wasm-simd-for-nodejs.sh
+
+          cp -v build-wasm-simd-for-nodejs/install/bin/wasm/sherpa-ncnn-wasm-main.js ./scripts/nodejs
+          cp -v build-wasm-simd-for-nodejs/install/bin/wasm/sherpa-ncnn-wasm-main.wasm ./scripts/nodejs
+          cp -v build-wasm-simd-for-nodejs/install/bin/wasm/sherpa-ncnn.js ./scripts/nodejs
+
+          SHERPA_NCNN_VERSION=$(grep "SHERPA_NCNN_VERSION" ./CMakeLists.txt  | cut -d " " -f 2  | cut -d '"' -f 2)
+          echo "SHERPA_NCNN_VERSION $SHERPA_NCNN_VERSION"
+
+          cd scripts/nodejs
+
+          owner=${{ github.repository_owner }}
+          echo "owner: $owner"
+
+          sed -i.bak s/SHERPA_NCNN_VERSION/$SHERPA_NCNN_VERSION/g ./package.json
+          sed -i.bak s/k2-fsa/$owner/g ./package.json
+
+          rm package.json.bak
+
+          git diff .
+
+          npm install
+          npm ci
+          # see https://docs.npmjs.com/generating-provenance-statements
+          npm publish --provenance --access public

.gitignore

@@ -116,3 +116,4 @@ generate-int8-*.sh
 cmake-build-release
 cmake-build-debug
 
+node_modules

CMakeLists.txt

@@ -1,7 +1,7 @@
 cmake_minimum_required(VERSION 3.13 FATAL_ERROR)
 project(sherpa-ncnn)
 
-set(SHERPA_NCNN_VERSION "2.1.8")
+set(SHERPA_NCNN_VERSION "2.1.9")
 
 # Disable warning about
 #
@@ -41,6 +41,7 @@ option(SHERPA_NCNN_ENABLE_BINARY "Whether to build the binary sherpa-ncnn" ON)
 option(SHERPA_NCNN_ENABLE_TEST "Whether to build tests" OFF)
 option(SHERPA_NCNN_ENABLE_C_API "Whether to build C API" ON)
 option(SHERPA_NCNN_ENABLE_WASM "Whether to enable WASM" OFF)
+option(SHERPA_NCNN_ENABLE_WASM_FOR_NODEJS "Whether to enable WASM for NodeJS" OFF)
 option(SHERPA_NCNN_ENABLE_GENERATE_INT8_SCALE_TABLE "Whether to generate-int8-scale-table" ON)
 option(SHERPA_NCNN_ENABLE_FFMPEG_EXAMPLES "Whether to enable ffmpeg-examples" OFF)
 
@@ -77,6 +78,14 @@ message(STATUS "SHERPA_NCNN_ENABLE_TEST ${SHERPA_NCNN_ENABLE_TEST}")
 message(STATUS "SHERPA_NCNN_ENABLE_C_API ${SHERPA_NCNN_ENABLE_C_API}")
 message(STATUS "SHERPA_NCNN_ENABLE_GENERATE_INT8_SCALE_TABLE ${SHERPA_NCNN_ENABLE_GENERATE_INT8_SCALE_TABLE}")
 message(STATUS "SHERPA_NCNN_ENABLE_FFMPEG_EXAMPLES ${SHERPA_NCNN_ENABLE_FFMPEG_EXAMPLES}")
+message(STATUS "SHERPA_NCNN_ENABLE_WASM ${SHERPA_NCNN_ENABLE_WASM}")
+message(STATUS "SHERPA_NCNN_ENABLE_WASM_FOR_NODEJS ${SHERPA_NCNN_ENABLE_WASM_FOR_NODEJS}")
+
+if(SHERPA_NCNN_ENABLE_WASM_FOR_NODEJS)
+  if(NOT SHERPA_NCNN_ENABLE_WASM)
+    message(FATAL_ERROR "Please set SHERPA_NCNN_ENABLE_WASM to ON if you enable WASM for NodeJS")
+  endif()
+endif()
 
 if(NOT CMAKE_BUILD_TYPE)
   message(STATUS "No CMAKE_BUILD_TYPE given, default to Release")

build-wasm-simd-for-nodejs.sh

@@ -0,0 +1,76 @@
+#!/usr/bin/env bash
+# Copyright (c)  2024  Xiaomi Corporation
+#
+# This script is to build sherpa-ncnn for WebAssembly (NodeJS)
+#
+# See also
+# https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-webassembly
+#
+# Please refer to
+# https://k2-fsa.github.io/sherpa/ncnn/wasm/index.html
+# for more details.
+
+set -ex
+
+if [ x"$EMSCRIPTEN" == x"" ]; then
+  if ! command -v emcc &> /dev/null; then
+    echo "Please install emscripten first"
+    echo ""
+    echo "You can use the following commands to install it:"
+    echo ""
+    echo "git clone https://github.com/emscripten-core/emsdk.git"
+    echo "cd emsdk"
+    echo "git pull"
+    echo "./emsdk install latest"
+    echo "./emsdk activate latest"
+    echo "source ./emsdk_env.sh"
+    exit 1
+  else
+    EMSCRIPTEN=$(dirname $(realpath $(which emcc)))
+  fi
+fi
+
+export EMSCRIPTEN=$EMSCRIPTEN
+echo "EMSCRIPTEN: $EMSCRIPTEN"
+if [ ! -f $EMSCRIPTEN/cmake/Modules/Platform/Emscripten.cmake ]; then
+  echo "Cannot find $EMSCRIPTEN/cmake/Modules/Platform/Emscripten.cmake"
+  echo "Please make sure you have installed emsdk correctly"
+  exit 1
+fi
+
+mkdir -p build-wasm-simd-for-nodejs
+pushd build-wasm-simd-for-nodejs
+
+export SHERPA_NCNN_IS_USING_BUILD_WASM_SH=ON
+
+cmake \
+  -DCMAKE_INSTALL_PREFIX=./install \
+  -DCMAKE_BUILD_TYPE=Release \
+  -DCMAKE_TOOLCHAIN_FILE=$EMSCRIPTEN/cmake/Modules/Platform/Emscripten.cmake \
+  -DNCNN_THREADS=OFF \
+  -DNCNN_OPENMP=OFF \
+  -DNCNN_SIMPLEOMP=OFF \
+  -DNCNN_RUNTIME_CPU=OFF \
+  -DNCNN_SSE2=ON \
+  -DNCNN_AVX2=OFF \
+  -DNCNN_AVX=OFF \
+  -DNCNN_BUILD_TOOLS=OFF \
+  -DNCNN_BUILD_EXAMPLES=OFF \
+  -DNCNN_BUILD_BENCHMARK=OFF \
+  \
+  -DSHERPA_NCNN_ENABLE_WASM=ON \
+  -DSHERPA_NCNN_ENABLE_WASM_FOR_NODEJS=ON \
+  -DBUILD_SHARED_LIBS=OFF \
+  -DSHERPA_NCNN_ENABLE_PYTHON=OFF \
+  -DSHERPA_NCNN_ENABLE_PORTAUDIO=OFF \
+  -DSHERPA_NCNN_ENABLE_JNI=OFF \
+  -DSHERPA_NCNN_ENABLE_BINARY=OFF \
+  -DSHERPA_NCNN_ENABLE_TEST=OFF \
+  -DSHERPA_NCNN_ENABLE_C_API=ON \
+  -DSHERPA_NCNN_ENABLE_GENERATE_INT8_SCALE_TABLE=OFF \
+  -DSHERPA_NCNN_ENABLE_FFMPEG_EXAMPLES=OFF \
+  ..
+
+make -j2
+make install
+ls -lh install/bin/wasm

nodejs-examples/.gitignore

@@ -1,4 +1 @@
-install
-node_modules
-package.json
 package-lock.json

nodejs-examples/README.md

@@ -0,0 +1,47 @@
+# Introduction
+
+This folder contains examples about how to use the sherpa-ncnn WebAssembly module
+with nodejs for speech recognition.
+
+- [decode-file.js](./decode-file.js) it shows how to decode a file
+- [real-time-speech-recognition-microphone.js](./real-time-speech-recognition-microphone.js) it shows
+  how to do real-time speech recognition with a microphone
+
+## Usage
+
+### Install dependencies
+
+```bash
+cd ./nodejs-examples
+npm i
+```
+
+### Download a model
+
+Please visit <https://github.com/k2-fsa/sherpa-ncnn/releases/tag/models> to
+select more models.
+
+The following is an example:
+
+```bash
+cd ./nodejs-examples
+wget https://github.com/k2-fsa/sherpa-ncnn/releases/download/models/sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+tar xvf sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+rm sherpa-ncnn-streaming-zipformer-bilingual-zh-en-2023-02-13.tar.bz2
+```
+
+### Decode a file
+
+```bash
+cd ./nodejs-examples
+
+node ./decode-file.js
+```
+
+### Real-time speech recognition from a microphone
+
+```bash
+cd ./nodejs-examples
+
+node ./real-time-speech-recognition-microphone.js
+```