thermal: add thermal headroom (cpu) and battery temperature monitoring in Android (#27)

* thermal: add thermal headroom (cpu) and battery temperature monitoring

* reformatting

* android defines

* GetThermalHeadroom() interval

* suppress JNI overhead

* remove unnecessary methods

* DeleteJNIArgArray

* move java thermal impls to another module

* add notification of latest battery temperature on receiver registration

Author: ruccho

Android/.idea/gradle.xml

@@ -29,6 +29,7 @@ android {
 
 dependencies {
     implementation project(':MobileSupportStorage.androidlib')
+    implementation project(':MobileSupportThermal.androidlib')
 
     implementation 'androidx.appcompat:appcompat:1.3.0'
     implementation 'com.google.android.material:material:1.4.0'

Android/app/build.gradle

@@ -0,0 +1,20 @@
+package jp.co.cyberagent.unitysupport.app;
+
+import android.os.Build;
+
+import java.util.function.Consumer;
+
+public class BatteryTemperatureReceiver implements jp.co.cyberagent.unitysupport.thermal.BatteryTemperatureReceiver {
+    private Consumer<Integer> onReceive;
+
+    @Override
+    public void onReceiveBatteryTemperature(int level) {
+        onReceive.accept(new Integer(level));
+    }
+    
+    public BatteryTemperatureReceiver(Consumer<Integer> onReceive)
+    {
+
+        this.onReceive = onReceive;
+    }
+}

Android/app/src/main/java/jp/co/cyberagent/unitysupport/app/BatteryTemperatureReceiver.java

@@ -5,7 +5,8 @@
 import android.os.Bundle;
 import android.widget.TextView;
 
-import jp.co.cyberagent.unitysupport.Storage;
+import jp.co.cyberagent.unitysupport.storage.Storage;
+import jp.co.cyberagent.unitysupport.thermal.BatteryChangedBroadcastReceiver;
 
 public class MainActivity extends AppCompatActivity {
 
@@ -22,5 +23,12 @@ protected void onCreate(Bundle savedInstanceState) {
             long usableSpaceAbove0 = Storage.getInternalUsableSpaceAboveO(getApplicationContext(), -1);
             textViewUsableSpaceAboveO.setText(String.valueOf(usableSpaceAbove0));
         }
+
+        BatteryChangedBroadcastReceiver broadcastReceiver = new BatteryChangedBroadcastReceiver();
+        broadcastReceiver.registerToContext(this.getApplicationContext());
+        TextView textViewBatteryTemperature = findViewById(R.id.textViewBatteryTemperatureValue);
+        broadcastReceiver.addReceiver(new BatteryTemperatureReceiver(level -> {
+            textViewBatteryTemperature.setText(level.toString());
+        }));
     }
 }

Android/app/src/main/java/jp/co/cyberagent/unitysupport/app/MainActivity.java

@@ -36,7 +36,6 @@
         <LinearLayout
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:layout_weight="1"
             android:orientation="horizontal">
 
             <TextView
@@ -53,6 +52,29 @@
                 android:layout_weight="1"
                 android:text="0" />
         </LinearLayout>
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:orientation="horizontal">
+
+            <TextView
+                android:id="@+id/textViewBatteryTemperature"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="BatteryTemperature" />
+
+            <TextView
+                android:id="@+id/textViewBatteryTemperatureValue"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:text="-" />
+
+        </LinearLayout>
+
     </LinearLayout>
 
 </androidx.constraintlayout.widget.ConstraintLayout>

Android/app/src/main/res/layout/activity_main.xml

@@ -17,3 +17,5 @@ include ':app'
 
 include ':MobileSupportStorage.androidlib'
 project(':MobileSupportStorage.androidlib').projectDir = new File(settingsDir, '../Packages/MobileSupportStorage/Runtime/Plugins/Android/MobileSupportStorage.androidlib')
+include ':MobileSupportThermal.androidlib'
+project(':MobileSupportThermal.androidlib').projectDir = new File(settingsDir, '../Packages/MobileSupportThermal/Runtime/Plugins/Android/MobileSupportThermal.androidlib')

Android/settings.gradle

@@ -2,16 +2,43 @@
 // Copyright 2023 CyberAgent, Inc.
 // --------------------------------------------------------------
 
+using System.Collections;
+using System.Diagnostics;
 using MobileSupport;
 using UnityEngine;
+using Debug = UnityEngine.Debug;
 
 public class ThermalView : MonoBehaviour
 {
     private void Start()
     {
+#if UNITY_ANDROID
+        Thermal.OnBatteryTemperatureChanged += value => Debug.Log($"Battery Temperature: {value}");
+#endif
+
 #if UNITY_ANDROID || UNITY_IOS
         Thermal.OnThermalStatusChanged += status => Debug.Log($"Thermal Status: {status}");
         Thermal.StartMonitoring();
 #endif
+
+#if UNITY_ANDROID
+        StartCoroutine(GetTemperaturesLooped());
+#endif
+    }
+
+    private IEnumerator GetTemperaturesLooped()
+    {
+        Stopwatch sw = new();
+
+        while (this)
+        {
+            yield return new WaitForSeconds(0.5f);
+
+            sw.Restart();
+            Thermal.GetThermalHeadroom(0, out var headroom, out var resultForecastSeconds, out var isLatestValue);
+            var elapsed = (double)sw.ElapsedTicks / Stopwatch.Frequency * 1000;
+
+            Debug.Log($"Thermal Headroom: {headroom}, isLatestValue: {isLatestValue}, resultForecastSeconds: {resultForecastSeconds} (obtained in {elapsed} ms)");
+        }
     }
 }

Assets/Scripts/ThermalView.cs

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="jp.co.cyberagent.unitysupport">
+    package="jp.co.cyberagent.unitysupport.storage">
 
 </manifest>

Packages/MobileSupportStorage/Runtime/Plugins/Android/MobileSupportStorage.androidlib/src/main/AndroidManifest.xml

@@ -1,4 +1,4 @@
-package jp.co.cyberagent.unitysupport;
+package jp.co.cyberagent.unitysupport.storage;
 
 import android.annotation.TargetApi;
 import android.content.Context;