[runtime/android] add android runtime (#83)

* [android] init android runtime

* [android] add voice rectangle view

* [android] finished

* [android] fix lint

runtime/android/.gitignore

@@ -0,0 +1,15 @@
+*.iml
+.gradle
+/local.properties
+/.idea/caches
+/.idea/libraries
+/.idea/modules.xml
+/.idea/workspace.xml
+/.idea/navEditor.xml
+/.idea/assetWizardSettings.xml
+.DS_Store
+/build
+/captures
+.externalNativeBuild
+.cxx
+local.properties

runtime/android/app/.gitignore

@@ -0,0 +1 @@
+/build

runtime/android/app/proguard-rules.pro

@@ -0,0 +1,21 @@
+# Add project specific ProGuard rules here.
+# You can control the set of applied configuration files using the
+# proguardFiles setting in build.gradle.
+#
+# For more details, see
+#   http://developer.android.com/guide/developing/tools/proguard.html
+
+# If your project uses WebView with JS, uncomment the following
+# and specify the fully qualified class name to the JavaScript interface
+# class:
+#-keepclassmembers class fqcn.of.javascript.interface.for.webview {
+#   public *;
+#}
+
+# Uncomment this to preserve the line number information for
+# debugging stack traces.
+#-keepattributes SourceFile,LineNumberTable
+
+# If you keep the line number information, uncomment this to
+# hide the original source file name.
+#-renamesourcefileattribute SourceFile

runtime/android/app/src/androidTest/java/cn/org/wenet/wekws/ExampleInstrumentedTest.java

@@ -0,0 +1,26 @@
+package cn.org.wenet.wekws;
+
+import android.content.Context;
+
+import androidx.test.platform.app.InstrumentationRegistry;
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+
+import static org.junit.Assert.*;
+
+/**
+ * Instrumented test, which will execute on an Android device.
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+@RunWith(AndroidJUnit4.class)
+public class ExampleInstrumentedTest {
+    @Test
+    public void useAppContext() {
+        // Context of the app under test.
+        Context appContext = InstrumentationRegistry.getInstrumentation().getTargetContext();
+        assertEquals("cn.org.wenet.wekws", appContext.getPackageName());
+    }
+}

runtime/android/app/src/main/AndroidManifest.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    package="cn.org.wenet.wekws">
+    <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <application
+        android:allowBackup="true"
+        android:dataExtractionRules="@xml/data_extraction_rules"
+        android:fullBackupContent="@xml/backup_rules"
+        android:icon="@mipmap/ic_launcher"
+        android:label="@string/app_name"
+        android:roundIcon="@mipmap/ic_launcher_round"
+        android:supportsRtl="true"
+        android:theme="@style/Theme.Wekws"
+        tools:targetApi="31">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+        </activity>
+    </application>
+
+</manifest>

runtime/android/app/src/main/cpp/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.4.1)
+project(wekws CXX)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_VERBOSE_MAKEFILE on)
+
+set(build_DIR ${CMAKE_SOURCE_DIR}/../../../build)
+file(GLOB ONNXRUNTIME_INCLUDE_DIRS "${build_DIR}/onnxruntime*.aar/headers")
+file(GLOB ONNXRUNTIME_LINK_DIRS "${build_DIR}/onnxruntime*.aar/jni/${ANDROID_ABI}")
+link_directories(${ONNXRUNTIME_LINK_DIRS})
+include_directories(${ONNXRUNTIME_INCLUDE_DIRS})
+
+include_directories(${CMAKE_SOURCE_DIR})
+add_library(wekws SHARED
+  frontend/feature_pipeline.cc
+  frontend/fft.cc
+  kws/keyword_spotting.cc
+  wekws.cc
+)
+target_link_libraries(wekws PUBLIC onnxruntime)

runtime/android/app/src/main/cpp/frontend

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+../../../../../core/frontend

runtime/android/app/src/main/cpp/kws

@@ -0,0 +1 @@
+../../../../../core/kws

runtime/android/app/src/main/cpp/utils

@@ -0,0 +1 @@
+../../../../../core/utils

runtime/android/app/src/main/cpp/wekws.cc

@@ -0,0 +1,119 @@
+// Copyright (c) 2022 Zhendong Peng (pzd17@tsinghua.org.cn)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+#include <jni.h>
+
+#include <string>
+#include <thread>
+
+#include "frontend/feature_pipeline.h"
+#include "kws/keyword_spotting.h"
+#include "utils/log.h"
+
+namespace wekws {
+std::shared_ptr<KeywordSpotting> spotter;
+std::shared_ptr<wenet::FeaturePipelineConfig> feature_config;
+std::shared_ptr<wenet::FeaturePipeline> feature_pipeline;
+std::string result;  // NOLINT
+int offset;
+
+void init(JNIEnv* env, jobject, jstring jModelDir) {
+  const char* pModelDir = env->GetStringUTFChars(jModelDir, nullptr);
+
+  std::string modelPath = std::string(pModelDir) + "/wenwen.ort";
+  spotter = std::make_shared<KeywordSpotting>(modelPath);
+
+  feature_config = std::make_shared<wenet::FeaturePipelineConfig>(40, 16000);
+  feature_pipeline = std::make_shared<wenet::FeaturePipeline>(*feature_config);
+}
+
+void reset(JNIEnv *env, jobject) {
+    offset = 0;
+    result = "";
+    spotter->Reset();
+}
+
+void accept_waveform(JNIEnv *env, jobject, jshortArray jWaveform) {
+  jsize size = env->GetArrayLength(jWaveform);
+  int16_t* waveform = env->GetShortArrayElements(jWaveform, 0);
+  std::vector<int16_t> v(waveform, waveform + size);
+  feature_pipeline->AcceptWaveform(v);
+  LOG(INFO) << "wekws accept waveform in ms: " << int(size / 16);
+}
+
+void set_input_finished() {
+  LOG(INFO) << "wekws input finished";
+  feature_pipeline->set_input_finished();
+}
+
+void spot_thread_func() {
+    while (true) {
+        std::vector<std::vector<float>> feats;
+        feature_pipeline->Read(80, &feats);
+        std::vector<std::vector<float>> prob;
+        spotter->Forward(feats, &prob);
+
+        float max_hi_xiaowen = 0;
+        float max_nihao_wenwen = 0;
+        for (int t = 0; t < prob.size(); t++) {
+            max_hi_xiaowen = std::max(prob[t][0], max_hi_xiaowen);
+            max_nihao_wenwen = std::max(prob[t][1], max_nihao_wenwen);
+        }
+        float max_prob = max_hi_xiaowen + max_nihao_wenwen;
+        result = std::to_string(offset) + " prob: " + std::to_string(max_prob);
+        offset += prob.size();
+    }
+}
+
+void start_spot() {
+    std::thread decode_thread(spot_thread_func);
+    decode_thread.detach();
+}
+
+jstring get_result(JNIEnv *env, jobject) {
+  LOG(INFO) << "wekws ui result: " << result;
+  return env->NewStringUTF(result.c_str());
+}
+}  // namespace wekws
+
+JNIEXPORT jint JNI_OnLoad(JavaVM *vm, void *) {
+  JNIEnv *env;
+  if (vm->GetEnv(reinterpret_cast<void **>(&env), JNI_VERSION_1_6) != JNI_OK) {
+    return JNI_ERR;
+  }
+
+  jclass c = env->FindClass("cn/org/wenet/wekws/Spot");
+  if (c == nullptr) {
+    return JNI_ERR;
+  }
+
+  static const JNINativeMethod methods[] = {
+    {"init", "(Ljava/lang/String;)V", reinterpret_cast<void*>(wekws::init)},
+    {"reset", "()V", reinterpret_cast<void *>(wekws::reset)},
+    {"acceptWaveform", "([S)V",
+     reinterpret_cast<void *>(wekws::accept_waveform)},
+    {"setInputFinished", "()V",
+     reinterpret_cast<void *>(wekws::set_input_finished)},
+    {"startSpot", "()V", reinterpret_cast<void *>(wekws::start_spot)},
+    {"getResult", "()Ljava/lang/String;",
+     reinterpret_cast<void *>(wekws::get_result)},
+  };
+  int rc = env->RegisterNatives(c, methods,
+                                sizeof(methods) / sizeof(JNINativeMethod));
+
+  if (rc != JNI_OK) {
+    return rc;
+  }
+
+  return JNI_VERSION_1_6;
+}

runtime/android/app/src/main/java/cn/org/wenet/wekws/MainActivity.java

@@ -0,0 +1,212 @@
+package cn.org.wenet.wekws;
+
+import androidx.appcompat.app.AppCompatActivity;
+import androidx.core.app.ActivityCompat;
+import androidx.core.content.ContextCompat;
+
+import android.Manifest;
+import android.content.Context;
+import android.content.pm.PackageManager;
+import android.content.res.AssetManager;
+import android.media.AudioFormat;
+import android.media.AudioRecord;
+import android.media.MediaRecorder;
+import android.os.Bundle;
+import android.os.Process;
+import android.util.Log;
+import android.widget.Button;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.util.Arrays;
+import java.util.List;
+import java.util.concurrent.ArrayBlockingQueue;
+import java.util.concurrent.BlockingQueue;
+
+public class MainActivity extends AppCompatActivity {
+
+    private final int MY_PERMISSIONS_RECORD_AUDIO = 1;
+    private static final String LOG_TAG = "WEKWS";
+    private static final int SAMPLE_RATE = 16000;  // The sampling rate
+    private static final int MAX_QUEUE_SIZE = 2500;  // 100 seconds audio, 1 / 0.04 * 100
+    private static final List<String> resource = Arrays.asList("wenwen.ort");
+
+    private boolean startRecord = false;
+    private AudioRecord record = null;
+    private int miniBufferSize = 0;  // 1280 bytes 648 byte 40ms, 0.04s
+    private final BlockingQueue<short[]> bufferQueue = new ArrayBlockingQueue<>(MAX_QUEUE_SIZE);
+
+    public static void assetsInit(Context context) throws IOException {
+        AssetManager assetMgr = context.getAssets();
+        // Unzip all files in resource from assets to context.
+        // Note: Uninstall the APP will remove the resource files in the context.
+        for (String file : assetMgr.list("")) {
+            if (resource.contains(file)) {
+                File dst = new File(context.getFilesDir(), file);
+                if (!dst.exists() || dst.length() == 0) {
+                    Log.i(LOG_TAG, "Unzipping " + file + " to " + dst.getAbsolutePath());
+                    InputStream is = assetMgr.open(file);
+                    OutputStream os = new FileOutputStream(dst);
+                    byte[] buffer = new byte[4 * 1024];
+                    int read;
+                    while ((read = is.read(buffer)) != -1) {
+                        os.write(buffer, 0, read);
+                    }
+                    os.flush();
+                }
+            }
+        }
+    }
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode,
+                                           String[] permissions, int[] grantResults) {
+        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
+        if (requestCode == MY_PERMISSIONS_RECORD_AUDIO) {
+            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                Log.i(LOG_TAG, "record permission is granted");
+                initRecorder();
+            } else {
+                Toast.makeText(this, "Permissions denied to record audio", Toast.LENGTH_LONG).show();
+                Button button = findViewById(R.id.button);
+                button.setEnabled(false);
+            }
+        }
+    }
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_main);
+        requestAudioPermissions();
+        try {
+            assetsInit(this);
+        } catch (IOException e) {
+            Log.e(LOG_TAG, "Error process asset files to file path");
+        }
+
+        TextView textView = findViewById(R.id.textView);
+        textView.setText("");
+        Spot.init(getFilesDir().getPath());
+
+        Button button = findViewById(R.id.button);
+        button.setText("Start Record");
+        button.setOnClickListener(view -> {
+            if (!startRecord) {
+                startRecord = true;
+                startRecordThread();
+                startSpotThread();
+                Spot.reset();
+                Spot.startSpot();
+                button.setText("Stop Record");
+            } else {
+                startRecord = false;
+                button.setText("Start Record");
+            }
+        });
+    }
+
+    private void requestAudioPermissions() {
+        if (ContextCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO)
+                != PackageManager.PERMISSION_GRANTED) {
+            ActivityCompat.requestPermissions(this,
+                    new String[]{Manifest.permission.RECORD_AUDIO},
+                    MY_PERMISSIONS_RECORD_AUDIO);
+        } else {
+            initRecorder();
+        }
+    }
+
+    private void initRecorder() {
+        // buffer size in bytes 1280
+        miniBufferSize = AudioRecord.getMinBufferSize(SAMPLE_RATE,
+                AudioFormat.CHANNEL_IN_MONO,
+                AudioFormat.ENCODING_PCM_16BIT);
+        if (miniBufferSize == AudioRecord.ERROR || miniBufferSize == AudioRecord.ERROR_BAD_VALUE) {
+            Log.e(LOG_TAG, "Audio buffer can't initialize!");
+            return;
+        }
+        if (ActivityCompat.checkSelfPermission(this, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
+            // TODO: Consider calling
+            //    ActivityCompat#requestPermissions
+            // here to request the missing permissions, and then overriding
+            //   public void onRequestPermissionsResult(int requestCode, String[] permissions,
+            //                                          int[] grantResults)
+            // to handle the case where the user grants the permission. See the documentation
+            // for ActivityCompat#requestPermissions for more details.
+            return;
+        }
+        record = new AudioRecord(MediaRecorder.AudioSource.DEFAULT,
+                SAMPLE_RATE,
+                AudioFormat.CHANNEL_IN_MONO,
+                AudioFormat.ENCODING_PCM_16BIT,
+                miniBufferSize);
+        if (record.getState() != AudioRecord.STATE_INITIALIZED) {
+            Log.e(LOG_TAG, "Audio Record can't initialize!");
+            return;
+        }
+        Log.i(LOG_TAG, "Record init okay");
+    }
+
+    private void startRecordThread() {
+        new Thread(() -> {
+            VoiceRectView voiceView = findViewById(R.id.voiceRectView);
+            record.startRecording();
+            Process.setThreadPriority(Process.THREAD_PRIORITY_AUDIO);
+            while (startRecord) {
+                short[] buffer = new short[miniBufferSize / 2];
+                int read = record.read(buffer, 0, buffer.length);
+                voiceView.add(calculateDb(buffer));
+                try {
+                    if (AudioRecord.ERROR_INVALID_OPERATION != read) {
+                        bufferQueue.put(buffer);
+                    }
+                } catch (InterruptedException e) {
+                    Log.e(LOG_TAG, e.getMessage());
+                }
+                Button button = findViewById(R.id.button);
+                if (!button.isEnabled() && startRecord) {
+                    runOnUiThread(() -> button.setEnabled(true));
+                }
+            }
+            record.stop();
+            voiceView.zero();
+        }).start();
+    }
+
+    private double calculateDb(short[] buffer) {
+        double energy = 0.0;
+        for (short value : buffer) {
+            energy += value * value;
+        }
+        energy /= buffer.length;
+        energy = (10 * Math.log10(1 + energy)) / 100;
+        energy = Math.min(energy, 1.0);
+        return energy;
+    }
+
+    private void startSpotThread() {
+        new Thread(() -> {
+            // Send all data
+            while (startRecord || bufferQueue.size() > 0) {
+                try {
+                    short[] data = bufferQueue.take();
+                    // 1. add data to C++ interface
+                    Spot.acceptWaveform(data);
+                    // 2. get partial result
+                    runOnUiThread(() -> {
+                        TextView textView = findViewById(R.id.textView);
+                        textView.setText(Spot.getResult());
+                    });
+                } catch (InterruptedException e) {
+                    Log.e(LOG_TAG, e.getMessage());
+                }
+            }
+        }).start();
+    }
+}

runtime/android/app/src/main/java/cn/org/wenet/wekws/Spot.java

@@ -0,0 +1,15 @@
+package cn.org.wenet.wekws;
+
+public class Spot {
+
+    static {
+        System.loadLibrary("wekws");
+    }
+
+    public static native void init(String modelDir);
+    public static native void reset();
+    public static native void acceptWaveform(short[] waveform);
+    public static native void setInputFinished();
+    public static native void startSpot();
+    public static native String getResult();
+}

runtime/android/app/src/main/java/cn/org/wenet/wekws/VoiceRectView.java

@@ -0,0 +1,136 @@
+package cn.org.wenet.wekws;
+
+import android.content.Context;
+import android.content.res.TypedArray;
+import android.graphics.Canvas;
+import android.graphics.LinearGradient;
+import android.graphics.Paint;
+import android.graphics.Shader;
+import android.util.AttributeSet;
+import android.view.View;
+
+import androidx.core.content.ContextCompat;
+
+import java.util.Arrays;
+
+/**
+ * 自定义的音频模拟条形图 Created by shize on 2016/9/5.
+ */
+public class VoiceRectView extends View {
+
+    // 音频矩形的数量
+    private int mRectCount;
+    // 音频矩形的画笔
+    private Paint mRectPaint;
+    // 渐变颜色的两种
+    private int topColor, downColor;
+    // 音频矩形的宽和高
+    private int mRectWidth, mRectHeight;
+    // 偏移量
+    private int offset;
+    // 频率速度
+    private int mSpeed;
+
+    private double[] mEnergyBuffer = null;
+
+    public VoiceRectView(Context context) {
+        this(context, null);
+    }
+
+    public VoiceRectView(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public VoiceRectView(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        setPaint(context, attrs);
+    }
+
+    public void setPaint(Context context, AttributeSet attrs) {
+        // 将属性存储到TypedArray中
+        TypedArray ta = context.obtainStyledAttributes(attrs, R.styleable.VoiceRect);
+        mRectPaint = new Paint();
+        // 添加矩形画笔的基础颜色
+        mRectPaint.setColor(ta.getColor(R.styleable.VoiceRect_RectTopColor,
+                ContextCompat.getColor(context, R.color.top_color)));
+        // 添加矩形渐变色的上面部分
+        topColor = ta.getColor(R.styleable.VoiceRect_RectTopColor,
+                ContextCompat.getColor(context, R.color.top_color));
+        // 添加矩形渐变色的下面部分
+        downColor = ta.getColor(R.styleable.VoiceRect_RectDownColor,
+                ContextCompat.getColor(context, R.color.down_color));
+        // 设置矩形的数量
+        mRectCount = ta.getInt(R.styleable.VoiceRect_RectCount, 10);
+        mEnergyBuffer = new double[mRectCount];
+
+        // 设置重绘的时间间隔，也就是变化速度
+        mSpeed = ta.getInt(R.styleable.VoiceRect_RectSpeed, 300);
+        // 每个矩形的间隔
+        offset = ta.getInt(R.styleable.VoiceRect_RectOffset, 0);
+        // 回收TypeArray
+        ta.recycle();
+    }
+
+    @Override
+    protected void onSizeChanged(int w, int h, int oldW, int oldH) {
+        super.onSizeChanged(w, h, oldW, oldH);
+        // 渐变效果
+        LinearGradient mLinearGradient;
+        // 画布的宽
+        int mWidth;
+        // 获取画布的宽
+        mWidth = getWidth();
+        // 获取矩形的最大高度
+        mRectHeight = getHeight();
+        // 获取单个矩形的宽度(减去的部分为到右边界的间距)
+        mRectWidth = (mWidth - offset) / mRectCount;
+        // 实例化一个线性渐变
+        mLinearGradient = new LinearGradient(
+                0,
+                0,
+                mRectWidth,
+                mRectHeight,
+                topColor,
+                downColor,
+                Shader.TileMode.CLAMP
+        );
+        // 添加进画笔的着色器
+        mRectPaint.setShader(mLinearGradient);
+    }
+
+    public void add(double energy) {
+        if (mEnergyBuffer.length - 1 >= 0) {
+            System.arraycopy(mEnergyBuffer, 1, mEnergyBuffer, 0, mEnergyBuffer.length - 1);
+        }
+        mEnergyBuffer[mEnergyBuffer.length - 1] = energy;
+    }
+
+    public void zero() {
+        Arrays.fill(mEnergyBuffer, 0);
+    }
+
+    @Override
+    protected void onDraw(Canvas canvas) {
+        super.onDraw(canvas);
+        double mRandom;
+        float currentHeight;
+        for (int i = 0; i < mRectCount; i++) {
+            // 由于只是简单的案例就不监听音频输入，随机模拟一些数字即可
+            mRandom = Math.random();
+
+            //if (i < 1 || i > mRectCount - 2) mRandom = 0;
+            currentHeight = (float) (mRectHeight * mEnergyBuffer[i]);
+
+            // 矩形的绘制是从左边开始到上、右、下边（左右边距离左边画布边界的距离，上下边距离上边画布边界的距离）
+            canvas.drawRect(
+                    (float) (mRectWidth * i + offset),
+                    (mRectHeight - currentHeight) / 2,
+                    (float) (mRectWidth * (i + 1)),
+                    mRectHeight / 2 + currentHeight / 2,
+                    mRectPaint
+            );
+        }
+        // 使得view延迟重绘
+        postInvalidateDelayed(mSpeed);
+    }
+}

runtime/android/app/src/main/res/drawable-v24/ic_launcher_foreground.xml

@@ -0,0 +1,30 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:aapt="http://schemas.android.com/aapt"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path android:pathData="M31,63.928c0,0 6.4,-11 12.1,-13.1c7.2,-2.6 26,-1.4 26,-1.4l38.1,38.1L107,108.928l-32,-1L31,63.928z">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                android:endX="85.84757"
+                android:endY="92.4963"
+                android:startX="42.9492"
+                android:startY="49.59793"
+                android:type="linear">
+                <item
+                    android:color="#44000000"
+                    android:offset="0.0" />
+                <item
+                    android:color="#00000000"
+                    android:offset="1.0" />
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+        android:fillColor="#FFFFFF"
+        android:fillType="nonZero"
+        android:pathData="M65.3,45.828l3.8,-6.6c0.2,-0.4 0.1,-0.9 -0.3,-1.1c-0.4,-0.2 -0.9,-0.1 -1.1,0.3l-3.9,6.7c-6.3,-2.8 -13.4,-2.8 -19.7,0l-3.9,-6.7c-0.2,-0.4 -0.7,-0.5 -1.1,-0.3C38.8,38.328 38.7,38.828 38.9,39.228l3.8,6.6C36.2,49.428 31.7,56.028 31,63.928h46C76.3,56.028 71.8,49.428 65.3,45.828zM43.4,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2c-0.3,-0.7 -0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C45.3,56.528 44.5,57.328 43.4,57.328L43.4,57.328zM64.6,57.328c-0.8,0 -1.5,-0.5 -1.8,-1.2s-0.1,-1.5 0.4,-2.1c0.5,-0.5 1.4,-0.7 2.1,-0.4c0.7,0.3 1.2,1 1.2,1.8C66.5,56.528 65.6,57.328 64.6,57.328L64.6,57.328z"
+        android:strokeWidth="1"
+        android:strokeColor="#00000000" />
+</vector>

runtime/android/app/src/main/res/drawable/ic_launcher_background.xml

@@ -0,0 +1,170 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="108dp"
+    android:height="108dp"
+    android:viewportWidth="108"
+    android:viewportHeight="108">
+    <path
+        android:fillColor="#3DDC84"
+        android:pathData="M0,0h108v108h-108z" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M9,0L9,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,0L19,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,0L29,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,0L39,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,0L49,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,0L59,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,0L69,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,0L79,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M89,0L89,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M99,0L99,108"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,9L108,9"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,19L108,19"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,29L108,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,39L108,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,49L108,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,59L108,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,69L108,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,79L108,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,89L108,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M0,99L108,99"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,29L89,29"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,39L89,39"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,49L89,49"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,59L89,59"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,69L89,69"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M19,79L89,79"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M29,19L29,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M39,19L39,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M49,19L49,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M59,19L59,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M69,19L69,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+    <path
+        android:fillColor="#00000000"
+        android:pathData="M79,19L79,89"
+        android:strokeWidth="0.8"
+        android:strokeColor="#33FFFFFF" />
+</vector>

runtime/android/app/src/main/res/layout/activity_main.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:VoiceRect="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".MainActivity">
+
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:background="#F4F4F4"
+        android:maxLines="15"
+        android:minLines="15"
+        android:text="TextView"
+        android:textSize="30sp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="0.0"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.08" />
+
+    <cn.org.wenet.wekws.VoiceRectView
+        android:id="@+id/voiceRectView"
+        android:layout_width="0dp"
+        android:layout_height="150dp"
+        VoiceRect:RectCount="50"
+        VoiceRect:RectDownColor="@color/green"
+        VoiceRect:RectOffset="0"
+        VoiceRect:RectSpeed="300"
+        VoiceRect:RectTopColor="@color/green"
+        app:layout_constraintBottom_toTopOf="@+id/button"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView" />
+
+    <Button
+        android:id="@+id/button"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:text="Button"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintHorizontal_bias="1.0"
+        app:layout_constraintStart_toStartOf="parent" />
+
+</androidx.constraintlayout.widget.ConstraintLayout>

runtime/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

runtime/android/app/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background" />
+    <foreground android:drawable="@drawable/ic_launcher_foreground" />
+</adaptive-icon>

runtime/android/app/src/main/res/values-night/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Wekws" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_200</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/black</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_200</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

runtime/android/app/src/main/res/values/attrs.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <declare-styleable name="VoiceRect">
+        <attr name="RectCount" format="integer" />
+        <attr name="RectDownColor" format="reference|color" />
+        <attr name="RectSpeed" format="integer" />
+        <attr name="RectTopColor" format="reference|color" />
+        <attr name="RectOffset" format="integer" />
+    </declare-styleable>
+    <declare-styleable name="VoiceLine">
+        <attr name="amplitude_big" format="dimension|reference" />
+        <attr name="amplitude_small" format="dimension|reference" />
+        <attr name="lineColor" format="color|reference" />
+        <attr name="backColor" format="color|reference" />
+        <attr name="frequency" format="float" />
+    </declare-styleable>
+</resources>

runtime/android/app/src/main/res/values/colors.xml

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="purple_200">#FFBB86FC</color>
+    <color name="purple_500">#FF6200EE</color>
+    <color name="purple_700">#FF3700B3</color>
+    <color name="teal_200">#FF03DAC5</color>
+    <color name="teal_700">#FF018786</color>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+
+    <color name="red">#f16d7a</color>
+    <color name="green">#b7d28d</color>
+    <color name="blue">#b8f1ed</color>
+    <color name="top_color">#b7d28d</color>
+    <color name="down_color">#b8f1ed</color>
+</resources>

runtime/android/app/src/main/res/values/strings.xml

@@ -0,0 +1,3 @@
+<resources>
+    <string name="app_name">wekws</string>
+</resources>

runtime/android/app/src/main/res/values/themes.xml

@@ -0,0 +1,16 @@
+<resources xmlns:tools="http://schemas.android.com/tools">
+    <!-- Base application theme. -->
+    <style name="Theme.Wekws" parent="Theme.MaterialComponents.DayNight.DarkActionBar">
+        <!-- Primary brand color. -->
+        <item name="colorPrimary">@color/purple_500</item>
+        <item name="colorPrimaryVariant">@color/purple_700</item>
+        <item name="colorOnPrimary">@color/white</item>
+        <!-- Secondary brand color. -->
+        <item name="colorSecondary">@color/teal_200</item>
+        <item name="colorSecondaryVariant">@color/teal_700</item>
+        <item name="colorOnSecondary">@color/black</item>
+        <!-- Status bar color. -->
+        <item name="android:statusBarColor" tools:targetApi="l">?attr/colorPrimaryVariant</item>
+        <!-- Customize your theme here. -->
+    </style>
+</resources>

runtime/android/app/src/main/res/xml/backup_rules.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample backup rules file; uncomment and customize as necessary.
+   See https://developer.android.com/guide/topics/data/autobackup
+   for details.
+   Note: This file is ignored for devices older that API 31
+   See https://developer.android.com/about/versions/12/backup-restore
+-->
+<full-backup-content>
+    <!--
+   <include domain="sharedpref" path="."/>
+   <exclude domain="sharedpref" path="device.xml"/>
+-->
+</full-backup-content>

runtime/android/app/src/main/res/xml/data_extraction_rules.xml

@@ -0,0 +1,19 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+   Sample data extraction rules file; uncomment and customize as necessary.
+   See https://developer.android.com/about/versions/12/backup-restore#xml-changes
+   for details.
+-->
+<data-extraction-rules>
+    <cloud-backup>
+        <!-- TODO: Use <include> and <exclude> to control what is backed up.
+        <include .../>
+        <exclude .../>
+        -->
+    </cloud-backup>
+    <!--
+    <device-transfer>
+        <include .../>
+        <exclude .../>
+    </device-transfer>
+    -->
+</data-extraction-rules>

runtime/android/app/src/test/java/cn/org/wenet/wekws/ExampleUnitTest.java

@@ -0,0 +1,17 @@
+package cn.org.wenet.wekws;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+/**
+ * Example local unit test, which will execute on the development machine (host).
+ *
+ * @see <a href="http://d.android.com/tools/testing">Testing documentation</a>
+ */
+public class ExampleUnitTest {
+    @Test
+    public void addition_isCorrect() {
+        assertEquals(4, 2 + 2);
+    }
+}

runtime/android/gradle.properties

@@ -0,0 +1,21 @@
+# Project-wide Gradle settings.
+# IDE (e.g. Android Studio) users:
+# Gradle settings configured through the IDE *will override*
+# any settings specified in this file.
+# For more details on how to configure your build environment visit
+# http://www.gradle.org/docs/current/userguide/build_environment.html
+# Specifies the JVM arguments used for the daemon process.
+# The setting is particularly useful for tweaking memory settings.
+org.gradle.jvmargs=-Xmx2048m -Dfile.encoding=UTF-8
+# When configured, Gradle will run in incubating parallel mode.
+# This option should only be used with decoupled projects. More details, visit
+# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
+# org.gradle.parallel=true
+# AndroidX package structure to make it clearer which packages are bundled with the
+# Android operating system, and which are packaged with your app"s APK
+# https://developer.android.com/topic/libraries/support-library/androidx-rn
+android.useAndroidX=true
+# Enables namespacing of each library's R class so that its R class includes only the
+# resources declared in the library itself and none from the library's dependencies,
+# thereby reducing the size of the R class for that library
+android.nonTransitiveRClass=true

runtime/android/gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Sat Sep 03 16:13:01 CST 2022
+distributionBase=GRADLE_USER_HOME
+distributionUrl=https\://services.gradle.org/distributions/gradle-7.3.3-bin.zip
+distributionPath=wrapper/dists
+zipStorePath=wrapper/dists
+zipStoreBase=GRADLE_USER_HOME

runtime/android/gradlew

@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"

runtime/android/gradlew.bat

@@ -0,0 +1,89 @@
+@rem
+@rem Copyright 2015 the original author or authors.
+@rem
+@rem Licensed under the Apache License, Version 2.0 (the "License");
+@rem you may not use this file except in compliance with the License.
+@rem You may obtain a copy of the License at
+@rem
+@rem      https://www.apache.org/licenses/LICENSE-2.0
+@rem
+@rem Unless required by applicable law or agreed to in writing, software
+@rem distributed under the License is distributed on an "AS IS" BASIS,
+@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+@rem See the License for the specific language governing permissions and
+@rem limitations under the License.
+@rem
+
+@if "%DEBUG%" == "" @echo off
+@rem ##########################################################################
+@rem
+@rem  Gradle startup script for Windows
+@rem
+@rem ##########################################################################
+
+@rem Set local scope for the variables with windows NT shell
+if "%OS%"=="Windows_NT" setlocal
+
+set DIRNAME=%~dp0
+if "%DIRNAME%" == "" set DIRNAME=.
+set APP_BASE_NAME=%~n0
+set APP_HOME=%DIRNAME%
+
+@rem Resolve any "." and ".." in APP_HOME to make it shorter.
+for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
+
+@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
+
+@rem Find java.exe
+if defined JAVA_HOME goto findJavaFromJavaHome
+
+set JAVA_EXE=java.exe
+%JAVA_EXE% -version >NUL 2>&1
+if "%ERRORLEVEL%" == "0" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:findJavaFromJavaHome
+set JAVA_HOME=%JAVA_HOME:"=%
+set JAVA_EXE=%JAVA_HOME%/bin/java.exe
+
+if exist "%JAVA_EXE%" goto execute
+
+echo.
+echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
+echo.
+echo Please set the JAVA_HOME variable in your environment to match the
+echo location of your Java installation.
+
+goto fail
+
+:execute
+@rem Setup the command line
+
+set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
+
+
+@rem Execute Gradle
+"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
+
+:end
+@rem End local scope for the variables with windows NT shell
+if "%ERRORLEVEL%"=="0" goto mainEnd
+
+:fail
+rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
+rem the _cmd.exe /c_ return code!
+if  not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
+exit /b 1
+
+:mainEnd
+if "%OS%"=="Windows_NT" endlocal
+
+:omega

runtime/android/settings.gradle

@@ -0,0 +1,16 @@
+pluginManagement {
+    repositories {
+        gradlePluginPortal()
+        google()
+        mavenCentral()
+    }
+}
+dependencyResolutionManagement {
+    repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
+    repositories {
+        google()
+        mavenCentral()
+    }
+}
+rootProject.name = "wekws"
+include ':app'

runtime/core/bin/kws_main.cc

@@ -12,7 +12,6 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-
 #include <iostream>
 #include <string>
 
@@ -50,11 +49,10 @@ int main(int argc, char* argv[]) {
     std::vector<std::vector<float>> prob;
     spotter.Forward(feats, &prob);
     for (int i = 0; i < prob.size(); i++) {
-      std::cout << "frame " << offset + i << " prob";
-      for (int j = 0; j < prob[i].size(); j++) {
-        std::cout << " " << prob[i][j];
+      if (prob[i][0] > 0.1 || prob[i][1] > 0.1) {
+        std::cout << "frame " << offset + i << " prob " << prob[i][0] << " "
+                  << prob[i][1] << std::endl;
       }
-      std::cout << std::endl;
     }
     // Reach the end of feature pipeline
     if (!ok) break;