Merge remote-tracking branch 'origin/master'
# Conflicts: # app/src/main/AndroidManifest.xml # app/src/main/java/com/example/ueberwachungssystem/MainActivity.java # app/src/main/res/layout/activity_main.xml
This commit is contained in:
commit
061646a7d6
3
Notiz.txt
Normal file
3
Notiz.txt
Normal file
@ -0,0 +1,3 @@
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Sensor als Service einrichten, der aus Activity heraus gestartet werden kann.
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Stichwort: Intent
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Siehe Skript Teil 1
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@ -26,6 +26,9 @@ android {
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sourceCompatibility JavaVersion.VERSION_1_8
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targetCompatibility JavaVersion.VERSION_1_8
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}
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buildFeatures {
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viewBinding true
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}
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}
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dependencies {
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@ -33,10 +36,19 @@ dependencies {
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implementation 'androidx.appcompat:appcompat:1.6.1'
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implementation 'com.google.android.material:material:1.8.0'
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implementation 'androidx.constraintlayout:constraintlayout:2.1.4'
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implementation 'com.google.android.gms:play-services-nearby:18.0.0'
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testImplementation 'junit:junit:4.13.2'
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androidTestImplementation 'androidx.test.ext:junit:1.1.5'
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androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'
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// OpenCV (from: https://github.com/QuickBirdEng/opencv-android)
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def opencv_version = "4.5.3.0"
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implementation "com.quickbirdstudios:opencv:${opencv_version}"
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implementation "androidx.lifecycle:lifecycle-extensions:2.0.0"
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// Required for CameraX
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def camerax_version = "1.2.2"
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implementation "androidx.camera:camera-core:${camerax_version}"
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@ -2,27 +2,9 @@
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<manifest xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools">
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<!-- <!– If your app targets Android 13 (API level 33)-->
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<!-- or higher, you must declare the NEARBY_WIFI_DEVICES permission. –>-->
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<!-- <uses-permission android:name="android.permission.NEARBY_WIFI_DEVICES"-->
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<!-- <!– If your app derives location information from Wi-Fi APIs,-->
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<!-- don't include the "usesPermissionFlags" attribute. –>-->
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<!-- android:usesPermissionFlags="neverForLocation" />-->
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<uses-permission
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android:required="true"
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android:name="android.permission.ACCESS_FINE_LOCATION"/>
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<!-- If any feature in your app relies on precise location information,
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don't include the "maxSdkVersion" attribute. -->
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<uses-permission
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android:required="true"
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android:name="android.permission.ACCESS_WIFI_STATE"/>
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<uses-permission
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android:required="true"
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android:name="android.permission.CHANGE_WIFI_STATE"/>
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<uses-permission
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android:required="true"
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android:name="android.permission.INTERNET"/>
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<uses-feature android:name="android.hardware.camera"/>
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<uses-permission android:name="android.permission.CAMERA"/>
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<uses-permission android:name="android.permission.RECORD_AUDIO" />
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<uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
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<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
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@ -46,6 +28,7 @@
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<category android:name="android.intent.category.LAUNCHER" />
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</intent-filter>
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</activity>
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<service android:name=".Detection.DetectorService"/>
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</application>
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</manifest>
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@ -0,0 +1,108 @@
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package com.example.ueberwachungssystem.Detection;
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import static java.lang.Math.sqrt;
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import android.content.Context;
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import android.hardware.Sensor;
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import android.hardware.SensorEvent;
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import android.hardware.SensorEventListener;
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import android.hardware.SensorManager;
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/**
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* Accelerometer inherits some methods from abstract Detector class (more info there)
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*
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*
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* USE FROM MAIN ACTIVITY:
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*
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* Accelerometer beschleunigungssensor = new Accelerometer(this);
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* onCreate:
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* //Accelerometer Setup
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* beschleunigungssensor = new Accelerometer(this, logger, textViewLog); //logger and textview only for debugging necessary
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* beschleunigungssensor.getSensor();
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*
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* //Starting Detection:
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* beschleunigungssensor.startDetection();
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* //Stopping Detection: also recommended at onPause to avoid unnecessary battery consumption
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* beschleunigungssensor.stopDetection();
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*
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* */
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public class Accelerometer extends Detector implements SensorEventListener {
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public SensorManager sensorManager;
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private static final int sensorType = Sensor.TYPE_LINEAR_ACCELERATION;
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private Sensor accelerometer;
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private Context context;
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boolean alarm = false;
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//Preallocate memory for the data of each axis of the acceleration sensor
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float x;
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float y;
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float z;
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float betrag; //Betrag aller drei Achsen sqrt(x*x + y*y + z*z)
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private DetectionReport detectionReport;
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// In constructor pass Activity, Context and TextView from MainActivity in Accelerometer class
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public Accelerometer(Context context){
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super(); //von Detektor
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this.context = context;
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}
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public void getSensor(){
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sensorManager = (SensorManager)context.getSystemService(Context.SENSOR_SERVICE);
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if(sensorManager.getSensorList(sensorType).size()==0) {
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accelerometer = null;
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}
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else {
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accelerometer = sensorManager.getSensorList(sensorType).get(0);
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}
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}
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@Override
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public void onSensorChanged(SensorEvent event) {
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try {
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checkAlarm(event);
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} catch (InterruptedException e) {
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throw new RuntimeException(e);
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}
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}
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public void checkAlarm (SensorEvent event) throws InterruptedException {
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x = event.values[0];
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y = event.values[1];
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z = event.values[2];
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betrag = (float) sqrt(x*x + y*y + z*z);
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float threshold = 1.5F;
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if (!alarm) {
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if (betrag > threshold) {
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alarm = true;
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reportViolation("Bewegung", betrag);
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}
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} else {
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if (betrag < threshold) {
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alarm = false;
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} else {
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}
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}
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}
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@Override
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public void onAccuracyChanged(Sensor sensor, int accuracy) {
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}
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@Override
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public void startDetection() {
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// entspricht void start()
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//getSensor();
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if (accelerometer != null) {
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sensorManager.registerListener(this, accelerometer, SensorManager.SENSOR_DELAY_GAME);
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}
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}
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@Override
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public void stopDetection() {
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// entspricht void stop()
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sensorManager.unregisterListener(this, accelerometer);
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}
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}
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@ -0,0 +1,74 @@
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package com.example.ueberwachungssystem.Detection;
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import android.content.Context;
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import android.media.MediaPlayer;
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import android.media.MediaRecorder;
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import android.widget.Toast;
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import java.io.File;
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import java.io.IOException;
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import java.time.LocalDateTime;
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import java.time.format.DateTimeFormatter;
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public class AudioRecorder {
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private final Context context;
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private MediaRecorder mediaRecorder = null;
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private boolean isRecording = false;
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private File outputDir; // Default: in app files directory
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public AudioRecorder (Context context) {
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this.context = context;
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this.outputDir = context.getFilesDir();
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}
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public void startRecording() {
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// Handle logic
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if (outputDir == null)
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return;
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if (isRecording)
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return;
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isRecording = true;
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// Setup Audio Recorder for output Format: 3GP
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mediaRecorder = new MediaRecorder();
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mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);
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mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
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mediaRecorder.setOutputFile(outputDir + "/" + generateFileName() + ".3gp");
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mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
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try {
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mediaRecorder.prepare();
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} catch (IOException e) {
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e.printStackTrace();
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}
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mediaRecorder.start();
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}
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public void stopRecording() {
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if (mediaRecorder != null) {
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mediaRecorder.stop();
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mediaRecorder.reset();
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mediaRecorder.release();
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mediaRecorder = null;
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isRecording = false;
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Toast.makeText(context, "audio recording saved", Toast.LENGTH_SHORT).show();
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}
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}
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public boolean isRecording(){
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return isRecording;
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}
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public void setOutputDir(File outputDir) {
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this.outputDir = outputDir;
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}
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private String generateFileName(){
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// Get the current timestamp
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LocalDateTime currentTime = LocalDateTime.now();
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// Define the format for the timestamp
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DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd_HHmmss");
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// Return the timestamp as a string
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return currentTime.format(formatter);
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}
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}
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@ -9,24 +9,26 @@ public class DetectionReport {
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public String timeStamp;
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public String detectionType;
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public float detectedValue;
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public String detectorID;
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public boolean detectionState;
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public DetectionReport(String detectorID, String detectionType, float detectedAmplitude) {
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public DetectionReport(boolean detectionState, String detectionType, float detectedAmplitude) {
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this.timeStamp = String.valueOf(Calendar.getInstance().getTime());
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this.detectionType = detectionType;
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this.detectedValue = detectedAmplitude;
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this.detectorID = detectorID;
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this.detectionState = detectionState;
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//this.detectorID = detectorID;
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}
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/** Get Detection Report in String format */
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public String toString() {
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String state = "State: " + "[" + this.detectionState + "]";
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String time = "Time: " + "[" + this.timeStamp + "]";
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String type = "Type: " + "[" + this.detectionType + "]";
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String value = "Value: " + "[" + this.detectedValue + "]";
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String id = "ID: " + "[" + this.detectorID + "]";
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return String.join("\t", time, type, value, id);
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return String.join("\t", state, time, type, value);
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}
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/** Debug Report */
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@ -1,10 +1,19 @@
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package com.example.ueberwachungssystem.Detection;
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import android.os.CountDownTimer;
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import androidx.annotation.NonNull;
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import androidx.camera.core.ExperimentalGetImage;
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abstract public class Detector {
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private OnDetectionListener listener;
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private boolean isDetecting = false;
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private boolean extendViolation = false;
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||||
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||||
// Countdown parameters
|
||||
private final int COUNTDOWN_TIME = 10000; // milliseconds
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||||
private final int COUNTDOWN_POLLING_TIME = 100; // milliseconds
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||||
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||||
/** Constructor - takes context of current activity */
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||||
public Detector() {}
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@ -18,17 +27,46 @@ abstract public class Detector {
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||||
this.listener = listener;
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||||
}
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||||
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||||
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||||
/** Triggers onDetectionListener - call this to trigger violation/alarm */
|
||||
public void reportViolation(String detectorID, String detectionType, float amplitude) {
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||||
public void reportViolation(String detectionType, float amplitude) {
|
||||
if (listener != null) {
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DetectionReport detectionReport = new DetectionReport(detectorID, detectionType, amplitude);
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||||
if (!isDetecting) {
|
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isDetecting = true;
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||||
DetectionReport detectionReport = new DetectionReport(true, detectionType, amplitude);
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||||
listener.onDetection(detectionReport);
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||||
startDetectionTimer(detectionType, amplitude);
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||||
} else {
|
||||
throw new IllegalStateException("No listener set for violation reporting");
|
||||
extendViolation = true;
|
||||
}
|
||||
} else {
|
||||
isDetecting = false;
|
||||
extendViolation = false;
|
||||
}
|
||||
}
|
||||
|
||||
private void startDetectionTimer(String detectionType, float amplitude) {
|
||||
isDetecting = true;
|
||||
new CountDownTimer((long) COUNTDOWN_TIME, COUNTDOWN_POLLING_TIME) {
|
||||
@Override
|
||||
public void onTick(long millisUntilFinished) {
|
||||
if (extendViolation) {
|
||||
extendViolation = false;
|
||||
startDetectionTimer(detectionType, amplitude);
|
||||
this.cancel();
|
||||
}
|
||||
}
|
||||
@Override
|
||||
public void onFinish() {
|
||||
isDetecting = false;
|
||||
DetectionReport detectionReport = new DetectionReport(false, detectionType, amplitude);
|
||||
listener.onDetection(detectionReport);
|
||||
}
|
||||
}.start();
|
||||
}
|
||||
|
||||
public void extendViolation(){
|
||||
this.extendViolation = true;
|
||||
}
|
||||
|
||||
/** Starts Detection (abstract method: needs to be overridden in child class) */
|
||||
public abstract void startDetection();
|
||||
|
||||
@ -0,0 +1,174 @@
|
||||
package com.example.ueberwachungssystem.Detection;
|
||||
|
||||
import android.content.Intent;
|
||||
import android.os.Binder;
|
||||
import android.os.IBinder;
|
||||
import android.util.Log;
|
||||
import android.widget.ImageView;
|
||||
import android.widget.Toast;
|
||||
|
||||
import androidx.annotation.NonNull;
|
||||
import androidx.annotation.Nullable;
|
||||
import androidx.camera.core.ExperimentalGetImage;
|
||||
import androidx.lifecycle.LifecycleService;
|
||||
|
||||
import com.example.ueberwachungssystem.WifiCommunication;
|
||||
|
||||
import java.io.File;
|
||||
|
||||
@ExperimentalGetImage
|
||||
public class DetectorService extends LifecycleService {
|
||||
public ServiceBinder serviceBinder = new ServiceBinder();
|
||||
private DetectorService.OnDetectionListener listener;
|
||||
private boolean isServiceRunning = false;
|
||||
|
||||
VideoDetector videoDetector = null;
|
||||
AudioRecorder audioRecorder = null;
|
||||
|
||||
/** Communication **/
|
||||
|
||||
WifiCommunication wifiCommunication;
|
||||
|
||||
StringBuffer dataFromWifi;
|
||||
|
||||
@Override
|
||||
public int onStartCommand(Intent intent, int flags, int startId) {
|
||||
if (isServiceRunning)
|
||||
return START_NOT_STICKY;
|
||||
|
||||
|
||||
// Setup Service classes:
|
||||
videoDetector = new VideoDetector(this);
|
||||
videoDetector.setOnDetectionListener(new Detector.OnDetectionListener() {
|
||||
@Override
|
||||
public void onDetection(@NonNull DetectionReport detectionReport) {
|
||||
passToServiceListener(detectionReport);
|
||||
}
|
||||
});
|
||||
|
||||
audioRecorder = new AudioRecorder(this);
|
||||
|
||||
|
||||
|
||||
isServiceRunning = true;
|
||||
|
||||
wifiCommunication = new WifiCommunication (1234);
|
||||
wifiCommunication.setOnConnectionListener(new WifiCommunication.OnConnectionListener() {
|
||||
@Override
|
||||
public void onConnection(StringBuffer data) {
|
||||
dataFromWifi = data;
|
||||
}
|
||||
});
|
||||
return super.onStartCommand(intent, flags, startId);
|
||||
}
|
||||
@Override
|
||||
public void onDestroy() {
|
||||
super.onDestroy();
|
||||
isServiceRunning = false;
|
||||
}
|
||||
|
||||
/** Service methods */
|
||||
public class ServiceBinder extends Binder {
|
||||
public DetectorService getBoundService() {
|
||||
// Return an instance of the TestService
|
||||
return DetectorService.this;
|
||||
}
|
||||
}
|
||||
@Nullable
|
||||
@Override
|
||||
public IBinder onBind(Intent intent) {
|
||||
super.onBind(intent);
|
||||
return serviceBinder;
|
||||
}
|
||||
|
||||
|
||||
/** Video Detection */
|
||||
public void startVideoDetection() {
|
||||
if(videoDetector != null)
|
||||
videoDetector.startDetection();
|
||||
}
|
||||
public void stopVideoDetection() {
|
||||
if(videoDetector != null)
|
||||
videoDetector.stopDetection();
|
||||
}
|
||||
public boolean isVideoDetectionRunning() {
|
||||
if(videoDetector != null)
|
||||
return videoDetector.isDetecting();
|
||||
return false;
|
||||
}
|
||||
public void debugVideoProcessing(ImageView input, ImageView output) {
|
||||
if(videoDetector != null)
|
||||
videoDetector.debugProcessing(input, output);
|
||||
}
|
||||
|
||||
/** Audio Detection */
|
||||
public void startAudioDetection() {
|
||||
|
||||
}
|
||||
public void stopAudioDetection() {
|
||||
|
||||
}
|
||||
|
||||
/** Motion Detection */
|
||||
public void startMotionDetection() {
|
||||
|
||||
}
|
||||
public void stopMotionDetection() {
|
||||
|
||||
}
|
||||
|
||||
/** Video Recording */
|
||||
public void startVideoRecording() {
|
||||
if(videoDetector != null)
|
||||
videoDetector.startRecording();
|
||||
}
|
||||
public void stopVideoRecording() {
|
||||
if(videoDetector != null)
|
||||
videoDetector.stopRecording();
|
||||
}
|
||||
public boolean isVideoRecordingRunning() {
|
||||
if(videoDetector != null)
|
||||
return videoDetector.isRecording();
|
||||
return false;
|
||||
}
|
||||
public void setVideoRecordingDir(File outputDir) {
|
||||
if (videoDetector != null)
|
||||
videoDetector.setOutputDir(outputDir);
|
||||
}
|
||||
|
||||
/** Audio Recording */
|
||||
public void startAudioRecording() {
|
||||
if(audioRecorder != null)
|
||||
audioRecorder.startRecording();
|
||||
}
|
||||
public void stopAudioRecording() {
|
||||
if(audioRecorder != null)
|
||||
audioRecorder.stopRecording();
|
||||
}
|
||||
public boolean isAudioRecordingRunning() {
|
||||
if(videoDetector != null)
|
||||
return audioRecorder.isRecording();
|
||||
return false;
|
||||
}
|
||||
public void setAudioRecordingDir(File outputDir) {
|
||||
if (audioRecorder != null)
|
||||
audioRecorder.setOutputDir(outputDir);
|
||||
}
|
||||
|
||||
|
||||
/** pass Detection Report to Service Detection Listener and trigger it */
|
||||
public void passToServiceListener(DetectionReport detectionReport) {
|
||||
if (listener != null) {
|
||||
listener.onDetection(detectionReport);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/** On Detection Listener - runs when violation is reported */
|
||||
public interface OnDetectionListener {
|
||||
void onDetection(@NonNull DetectionReport detectionReport);
|
||||
}
|
||||
public void setOnDetectionListener(@NonNull DetectorService.OnDetectionListener listener) {
|
||||
this.listener = listener;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,382 @@
|
||||
package com.example.ueberwachungssystem.Detection;
|
||||
|
||||
import static java.lang.Math.*;
|
||||
|
||||
import android.Manifest;
|
||||
import android.annotation.SuppressLint;
|
||||
import android.app.Activity;
|
||||
import android.content.Context;
|
||||
import android.content.pm.PackageManager;
|
||||
import android.media.AudioFormat;
|
||||
import android.media.AudioRecord;
|
||||
import android.media.MediaRecorder;
|
||||
import android.os.AsyncTask;
|
||||
import android.util.Log;
|
||||
|
||||
import androidx.core.app.ActivityCompat;
|
||||
import androidx.core.content.ContextCompat;
|
||||
|
||||
import com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex;
|
||||
import com.example.ueberwachungssystem.Detection.Signalverarbeitung.FFT;
|
||||
import com.example.ueberwachungssystem.Detection.DetectionReport;
|
||||
import com.example.ueberwachungssystem.Detection.Detector;
|
||||
|
||||
public class MicrophoneDetector extends Detector {
|
||||
/**
|
||||
* Constructor - takes context of current activity
|
||||
*
|
||||
* @param context
|
||||
*/
|
||||
|
||||
private static final int RECHTEANFORDERUNG_MIKROFON = 1;
|
||||
|
||||
private AufnahmeTask aufnahmeTask;
|
||||
public boolean armed = false;
|
||||
public int Schwellwert_Alarm = 100;
|
||||
private Context context;
|
||||
|
||||
public MicrophoneDetector(Context context) {
|
||||
super();
|
||||
this.context = context;
|
||||
}
|
||||
|
||||
@Override
|
||||
public void startDetection() {
|
||||
aufnahmeTask = new AufnahmeTask();
|
||||
aufnahmeTask.execute();
|
||||
}
|
||||
|
||||
@Override
|
||||
public void stopDetection() {
|
||||
if (aufnahmeTask != null) {
|
||||
aufnahmeTask.cancel(true);
|
||||
}
|
||||
}
|
||||
|
||||
class AufnahmeTask extends AsyncTask<Long, Verarbeitungsergebnis, Void> {
|
||||
private AudioRecord recorder;
|
||||
private final int sampleRateInHz = 44100;
|
||||
private final int channelConfig = AudioFormat.CHANNEL_IN_MONO;
|
||||
private final int audioFormat = AudioFormat.ENCODING_PCM_16BIT;
|
||||
private int minPufferGroesseInBytes;
|
||||
private int pufferGroesseInBytes;
|
||||
private RingPuffer ringPuffer = new RingPuffer(10);
|
||||
private float kalibierWert;
|
||||
private com.example.ueberwachungssystem.Detection.DetectionReport detectionReport;
|
||||
|
||||
@SuppressLint("MissingPermission")
|
||||
AufnahmeTask() {
|
||||
minPufferGroesseInBytes = AudioRecord.getMinBufferSize(sampleRateInHz, channelConfig, audioFormat);
|
||||
pufferGroesseInBytes = minPufferGroesseInBytes * 2;
|
||||
try {
|
||||
recorder = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleRateInHz, channelConfig, audioFormat, pufferGroesseInBytes);
|
||||
} catch (Exception e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
Log.d("0","Puffergroeße: "+ minPufferGroesseInBytes + " " + pufferGroesseInBytes);
|
||||
Log.d("0","Recorder (SR, CH): "+ recorder.getSampleRate() + " " + recorder.getChannelCount());
|
||||
|
||||
int anzahlBytesProAbtastwert;
|
||||
String s;
|
||||
switch (recorder.getAudioFormat()) {
|
||||
case AudioFormat.ENCODING_PCM_8BIT:
|
||||
s = "8 Bit PCM ";
|
||||
anzahlBytesProAbtastwert = 1;
|
||||
break;
|
||||
case AudioFormat.ENCODING_PCM_16BIT:
|
||||
s = "16 Bit PCM";
|
||||
anzahlBytesProAbtastwert = 2;
|
||||
break;
|
||||
case AudioFormat.ENCODING_PCM_FLOAT:
|
||||
s = "Float PCM";
|
||||
anzahlBytesProAbtastwert = 4;
|
||||
break;
|
||||
default:
|
||||
throw new IllegalArgumentException();
|
||||
}
|
||||
|
||||
switch (recorder.getChannelConfiguration()) {
|
||||
case AudioFormat.CHANNEL_IN_MONO:
|
||||
s = "Mono";
|
||||
break;
|
||||
case AudioFormat.CHANNEL_IN_STEREO:
|
||||
s = "Stereo";
|
||||
anzahlBytesProAbtastwert *= 2;
|
||||
break;
|
||||
case AudioFormat.CHANNEL_INVALID:
|
||||
s = "ungültig";
|
||||
break;
|
||||
default:
|
||||
throw new IllegalArgumentException();
|
||||
}
|
||||
|
||||
Log.d("0","Konfiguration: "+ s);
|
||||
|
||||
int pufferGroesseInAnzahlAbtastwerten = pufferGroesseInBytes / anzahlBytesProAbtastwert;
|
||||
|
||||
}
|
||||
|
||||
@Override
|
||||
protected Void doInBackground(Long... params) {
|
||||
recorder.startRecording();
|
||||
short[] puffer = new short[pufferGroesseInBytes / 2];
|
||||
long lastTime = System.currentTimeMillis();
|
||||
float verarbeitungsrate = 0;
|
||||
final int maxZaehlerZeitMessung = 10;
|
||||
int zaehlerZeitMessung = 0;
|
||||
int anzahlVerarbeitet = 0;
|
||||
GleitenderMittelwert gleitenderMittelwert = new GleitenderMittelwert(0.3f);
|
||||
|
||||
//Kalibrierung
|
||||
try {
|
||||
Thread.sleep(3000); // Time to lay down the phone
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
int i = 0;
|
||||
for (i = 0; i < 20; i++) {
|
||||
int n = recorder.read(puffer, 0, puffer.length);
|
||||
Verarbeitungsergebnis kalibrierErgebnis = verarbeiten(puffer, n);
|
||||
kalibierWert += kalibrierErgebnis.maxAmp;
|
||||
try {
|
||||
Thread.sleep(50);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
kalibierWert = kalibierWert/i;
|
||||
|
||||
// __Part of FFT__
|
||||
// Complex[] zeitSignal = new Complex[puffer.length];
|
||||
// for (int j = 0; j < puffer.length; j++) {
|
||||
// zeitSignal[j] = new Complex(puffer[j], 0);
|
||||
// }
|
||||
// Complex[] spektrum = FFT.fft(zeitSignal);
|
||||
// double[] spektrum = calculateFFT(puffer);
|
||||
// DataPoint AddPoint;
|
||||
// LineGraphSeries<DataPoint> series = new LineGraphSeries<DataPoint>(new DataPoint[]{});
|
||||
// for (i = 0; i < spektrum.length; i++) {
|
||||
// AddPoint = new DataPoint(i, spektrum[i]);
|
||||
// series.appendData(AddPoint, true, spektrum.length);
|
||||
// }
|
||||
// graph.addSeries(series);
|
||||
|
||||
for (; ; ) {
|
||||
if (aufnahmeTask.isCancelled()) {
|
||||
break;
|
||||
} else {
|
||||
int n = recorder.read(puffer, 0, puffer.length);
|
||||
Verarbeitungsergebnis ergebnis = verarbeiten(puffer, n);
|
||||
anzahlVerarbeitet += n;
|
||||
|
||||
// __Part of FFT__
|
||||
// spektrum = calculateFFT(puffer);
|
||||
// LineGraphSeries<DataPoint> newseries = new LineGraphSeries<DataPoint>(new DataPoint[]{});
|
||||
// for (i = 0; i < spektrum.length; i++) {
|
||||
// AddPoint = new DataPoint(i, spektrum[i]);
|
||||
// newseries.appendData(AddPoint, true, spektrum.length);
|
||||
// }
|
||||
|
||||
zaehlerZeitMessung++;
|
||||
if (zaehlerZeitMessung == maxZaehlerZeitMessung) {
|
||||
long time = System.currentTimeMillis();
|
||||
long deltaTime = time - lastTime;
|
||||
verarbeitungsrate = 1000.0f * anzahlVerarbeitet / deltaTime;
|
||||
verarbeitungsrate = gleitenderMittelwert.mittel(verarbeitungsrate);
|
||||
zaehlerZeitMessung = 0;
|
||||
anzahlVerarbeitet = 0;
|
||||
lastTime = time;
|
||||
}
|
||||
|
||||
|
||||
ergebnis.verarbeitungsrate = (int) verarbeitungsrate;
|
||||
publishProgress(ergebnis);
|
||||
|
||||
try {
|
||||
Thread.sleep(10);
|
||||
} catch (InterruptedException e) {
|
||||
e.printStackTrace();
|
||||
}
|
||||
}
|
||||
}
|
||||
recorder.release();
|
||||
return null;
|
||||
}
|
||||
|
||||
private Verarbeitungsergebnis verarbeiten(short[] daten, int n) {
|
||||
String status;
|
||||
short maxAmp = -1;
|
||||
if (n == AudioRecord.ERROR_INVALID_OPERATION) {
|
||||
status = "ERROR_INVALID_OPERATION";
|
||||
} else if (n == AudioRecord.ERROR_BAD_VALUE) {
|
||||
status = "ERROR_BAD_VALUE";
|
||||
} else {
|
||||
status = "OK";
|
||||
short max = 0;
|
||||
for (int i = 0; i < n; i++) {
|
||||
if (daten[i] > max) {
|
||||
max = daten[i];
|
||||
}
|
||||
}
|
||||
|
||||
ringPuffer.hinzufuegen(max);
|
||||
maxAmp = ringPuffer.maximum();
|
||||
if (maxAmp <= Schwellwert_Alarm+kalibierWert) {
|
||||
armed = true;
|
||||
}
|
||||
}
|
||||
|
||||
return new Verarbeitungsergebnis(status, maxAmp, 0);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onProgressUpdate(Verarbeitungsergebnis... progress) {
|
||||
super.onProgressUpdate(progress);
|
||||
float maxAmpPrint = round(20*log10(abs(progress[0].maxAmp/1.0)));
|
||||
float kalibierWertPrint = round(20*log10(abs(kalibierWert)));
|
||||
Log.d("0","VR, Max, Kal:" + progress[0].verarbeitungsrate + ", " + maxAmpPrint
|
||||
+ " dB, " + kalibierWertPrint + " dB");
|
||||
|
||||
if (progress[0].maxAmp >= Schwellwert_Alarm+kalibierWert && armed == true) {
|
||||
armed = false;
|
||||
detectionReport = new DetectionReport(true, "Audio", maxAmpPrint);
|
||||
reportViolation("Audio", maxAmpPrint);
|
||||
Log.d("1",detectionReport.toString());
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private double[] calculateFFT(short[] zeitsignal)
|
||||
{
|
||||
byte signal[] = new byte[zeitsignal.length];
|
||||
// loops through all the values of a Short
|
||||
for (int i = 0; i < zeitsignal.length-1; i++) {
|
||||
signal[i] = (byte) (zeitsignal[i]);
|
||||
signal[i+1] = (byte) (zeitsignal[i] >> 8);
|
||||
}
|
||||
|
||||
final int mNumberOfFFTPoints =1024;
|
||||
|
||||
double temp;
|
||||
Complex[] y;
|
||||
Complex[] complexSignal = new Complex[mNumberOfFFTPoints];
|
||||
double[] absSignal = new double[mNumberOfFFTPoints/2];
|
||||
|
||||
for(int i = 0; i < mNumberOfFFTPoints; i++){
|
||||
temp = (double)((signal[2*i] & 0xFF) | (signal[2*i+1] << 8)) / 32768.0F;
|
||||
complexSignal[i] = new Complex(temp,0.0);
|
||||
}
|
||||
|
||||
y = FFT.fft(complexSignal);
|
||||
|
||||
for(int i = 0; i < (mNumberOfFFTPoints/2); i++)
|
||||
{
|
||||
absSignal[i] = y[i].abs();
|
||||
}
|
||||
|
||||
return absSignal;
|
||||
|
||||
}
|
||||
|
||||
class Verarbeitungsergebnis {
|
||||
String status;
|
||||
short maxAmp;
|
||||
int verarbeitungsrate;
|
||||
Verarbeitungsergebnis(String status, short maxAmp, int verarbeitungsrate) {
|
||||
this.status = status;
|
||||
this.maxAmp = maxAmp;
|
||||
this.verarbeitungsrate = verarbeitungsrate;
|
||||
}
|
||||
}
|
||||
|
||||
class RingPuffer {
|
||||
private short[] puffer;
|
||||
private final int laenge;
|
||||
private int anzahlEnthaltenerDaten;
|
||||
private int position;
|
||||
|
||||
public RingPuffer(int n) {
|
||||
laenge = n;
|
||||
anzahlEnthaltenerDaten = 0;
|
||||
position = 0;
|
||||
puffer = new short[laenge];
|
||||
}
|
||||
|
||||
public void hinzufuegen(short wert) {
|
||||
puffer[position] = wert;
|
||||
position++;
|
||||
if (position >= laenge) {
|
||||
position = 0;
|
||||
}
|
||||
if (anzahlEnthaltenerDaten < laenge) {
|
||||
anzahlEnthaltenerDaten++;
|
||||
}
|
||||
}
|
||||
|
||||
public void hinzufuegen(short[] daten) {
|
||||
for (short d : daten) {
|
||||
puffer[position] = d;
|
||||
position++;
|
||||
if (position >= laenge) {
|
||||
position = 0;
|
||||
}
|
||||
}
|
||||
if (anzahlEnthaltenerDaten < laenge) {
|
||||
anzahlEnthaltenerDaten += daten.length;
|
||||
if (anzahlEnthaltenerDaten >= laenge) {
|
||||
anzahlEnthaltenerDaten = laenge;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public short maximum() {
|
||||
short max = 0;
|
||||
for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
|
||||
if (puffer[i] > max) {
|
||||
max = puffer[i];
|
||||
}
|
||||
}
|
||||
return max;
|
||||
}
|
||||
|
||||
public float mittelwert() {
|
||||
float summe = 0;
|
||||
for (int i = 0; i < anzahlEnthaltenerDaten; i++) {
|
||||
summe += puffer[i];
|
||||
}
|
||||
return summe / anzahlEnthaltenerDaten;
|
||||
}
|
||||
}
|
||||
|
||||
class GleitenderMittelwert {
|
||||
private final float wichtungNeuerWert;
|
||||
private final float wichtungAlterWert;
|
||||
private float mittelwert = 0;
|
||||
private boolean istMittelwertGesetzt = false;
|
||||
|
||||
GleitenderMittelwert(float wichtungNeuerWert) {
|
||||
this.wichtungNeuerWert = wichtungNeuerWert;
|
||||
this.wichtungAlterWert = 1 - this.wichtungNeuerWert;
|
||||
}
|
||||
|
||||
float MittelwertPuffer(short[] puffer) {
|
||||
|
||||
for (int i = 0; i < puffer.length; i++) {
|
||||
mittelwert = Math.abs(puffer[i]);
|
||||
}
|
||||
mittelwert = mittelwert/puffer.length;
|
||||
|
||||
return mittelwert;
|
||||
}
|
||||
|
||||
float mittel(float wert) {
|
||||
if (istMittelwertGesetzt) {
|
||||
mittelwert = wert * wichtungNeuerWert + mittelwert * wichtungAlterWert;
|
||||
} else {
|
||||
mittelwert = wert;
|
||||
istMittelwertGesetzt = true;
|
||||
}
|
||||
return mittelwert;
|
||||
}
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,109 @@
|
||||
package com.example.ueberwachungssystem.Detection;
|
||||
|
||||
import android.graphics.Bitmap;
|
||||
import android.media.Image;
|
||||
import android.widget.ImageView;
|
||||
|
||||
import androidx.annotation.NonNull;
|
||||
import androidx.camera.core.ExperimentalGetImage;
|
||||
import androidx.camera.core.ImageProxy;
|
||||
|
||||
import org.opencv.android.Utils;
|
||||
import org.opencv.core.Core;
|
||||
import org.opencv.core.CvType;
|
||||
import org.opencv.core.Mat;
|
||||
import org.opencv.core.MatOfPoint;
|
||||
import org.opencv.core.Scalar;
|
||||
import org.opencv.core.Size;
|
||||
import org.opencv.imgproc.Imgproc;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import java.util.ArrayList;
|
||||
import java.util.Collections;
|
||||
import java.util.List;
|
||||
|
||||
|
||||
@ExperimentalGetImage
|
||||
public class OpenCVHelper {
|
||||
|
||||
/** OpenCV helper methods **/
|
||||
public static Mat addGaussianBlur(Mat inputMat, Size kernelSize){
|
||||
Mat outputMat = new Mat();
|
||||
Imgproc.GaussianBlur(inputMat, outputMat, kernelSize, 0);
|
||||
return outputMat;
|
||||
}
|
||||
|
||||
public static Mat addBlur(Mat inputMat, Size kernelSize){
|
||||
Mat outputMat = new Mat();
|
||||
Imgproc.blur(inputMat, outputMat, kernelSize);
|
||||
return outputMat;
|
||||
}
|
||||
|
||||
public static Mat extractYChannel(@NonNull ImageProxy imgProxy) {
|
||||
Image img = imgProxy.getImage();
|
||||
|
||||
assert img != null;
|
||||
ByteBuffer yBuffer = img.getPlanes()[0].getBuffer();
|
||||
byte[] yData = new byte[yBuffer.remaining()];
|
||||
yBuffer.get(yData);
|
||||
|
||||
Mat yMat = new Mat(img.getHeight(), img.getWidth(), CvType.CV_8UC1);
|
||||
yMat.put(0, 0, yData);
|
||||
|
||||
return yMat;
|
||||
}
|
||||
|
||||
public static Mat thresholdPixels(Mat inputMat, Mat previousImage, int threshold){
|
||||
Mat diffImage = new Mat();
|
||||
Core.absdiff(inputMat, previousImage, diffImage);
|
||||
Mat binaryMat = new Mat();
|
||||
Imgproc.threshold(diffImage, binaryMat, threshold, 255, Imgproc.THRESH_BINARY);
|
||||
return binaryMat;
|
||||
}
|
||||
|
||||
|
||||
public static Mat thresholdContourArea(Mat inputMat, float areaThreshold){
|
||||
List<MatOfPoint> contours = new ArrayList<>();
|
||||
Mat hierarchy = new Mat();
|
||||
Imgproc.findContours(inputMat, contours, hierarchy, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_SIMPLE);
|
||||
|
||||
Mat outputMat = new Mat(inputMat.size(), inputMat.type(), new Scalar(0));
|
||||
// Iterate over the contours and draw only the larger contours on the outputMat
|
||||
for (MatOfPoint contour : contours) {
|
||||
double contourArea = Imgproc.contourArea(contour);
|
||||
if (contourArea > areaThreshold) {
|
||||
Imgproc.drawContours(outputMat, Collections.singletonList(contour), 0, new Scalar(255), -1);
|
||||
}
|
||||
}
|
||||
// Apply the outputMat as a mask to the dilatedImage
|
||||
Mat maskedImage = new Mat();
|
||||
inputMat.copyTo(maskedImage, outputMat);
|
||||
return outputMat;
|
||||
}
|
||||
|
||||
public static Mat dilateBinaryMat(Mat inputMat, Size kernelSize){
|
||||
Mat dilatedMat = new Mat();
|
||||
Mat kernel = Imgproc.getStructuringElement(Imgproc.MORPH_ELLIPSE, kernelSize);
|
||||
Imgproc.dilate(inputMat, dilatedMat, kernel);
|
||||
return dilatedMat;
|
||||
}
|
||||
|
||||
public static int countNonZeroPixels(Mat inputImage) {
|
||||
if (inputImage != null)
|
||||
return Core.countNonZero(inputImage);
|
||||
else
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
public static void debugMat(Mat mat, ImageView imageView) {
|
||||
if (imageView == null || mat == null)
|
||||
return;
|
||||
|
||||
Bitmap bitmap = Bitmap.createBitmap(mat.cols(), mat.rows(), Bitmap.Config.ARGB_8888);
|
||||
Utils.matToBitmap(mat, bitmap);
|
||||
|
||||
// Display the bitmap in an ImageView
|
||||
imageView.setImageBitmap(bitmap);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,148 @@
|
||||
package com.example.ueberwachungssystem.Detection.Signalverarbeitung;
|
||||
|
||||
import java.util.Objects;
|
||||
|
||||
public class Complex {
|
||||
private final double re; // the real part
|
||||
private final double im; // the imaginary part
|
||||
|
||||
// create a new object with the given real and imaginary parts
|
||||
public Complex(double real, double imag) {
|
||||
re = real;
|
||||
im = imag;
|
||||
}
|
||||
|
||||
// return a string representation of the invoking com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object
|
||||
public String toString() {
|
||||
if (im == 0) return re + "";
|
||||
if (re == 0) return im + "i";
|
||||
if (im < 0) return re + " - " + (-im) + "i";
|
||||
return re + " + " + im + "i";
|
||||
}
|
||||
|
||||
// return abs/modulus/magnitude
|
||||
public double abs() {
|
||||
return Math.hypot(re, im);
|
||||
}
|
||||
|
||||
// return angle/phase/argument, normalized to be between -pi and pi
|
||||
public double phase() {
|
||||
return Math.atan2(im, re);
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is (this + b)
|
||||
public Complex plus(Complex b) {
|
||||
Complex a = this; // invoking object
|
||||
double real = a.re + b.re;
|
||||
double imag = a.im + b.im;
|
||||
return new Complex(real, imag);
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is (this - b)
|
||||
public Complex minus(Complex b) {
|
||||
Complex a = this;
|
||||
double real = a.re - b.re;
|
||||
double imag = a.im - b.im;
|
||||
return new Complex(real, imag);
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is (this * b)
|
||||
public Complex times(Complex b) {
|
||||
Complex a = this;
|
||||
double real = a.re * b.re - a.im * b.im;
|
||||
double imag = a.re * b.im + a.im * b.re;
|
||||
return new Complex(real, imag);
|
||||
}
|
||||
|
||||
// return a new object whose value is (this * alpha)
|
||||
public Complex scale(double alpha) {
|
||||
return new Complex(alpha * re, alpha * im);
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the conjugate of this
|
||||
public Complex conjugate() {
|
||||
return new Complex(re, -im);
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the reciprocal of this
|
||||
public Complex reciprocal() {
|
||||
double scale = re * re + im * im;
|
||||
return new Complex(re / scale, -im / scale);
|
||||
}
|
||||
|
||||
// return the real or imaginary part
|
||||
public double re() {
|
||||
return re;
|
||||
}
|
||||
|
||||
public double im() {
|
||||
return im;
|
||||
}
|
||||
|
||||
// return a / b
|
||||
public Complex divides(Complex b) {
|
||||
Complex a = this;
|
||||
return a.times(b.reciprocal());
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the complex exponential of this
|
||||
public Complex exp() {
|
||||
return new Complex(Math.exp(re) * Math.cos(im), Math.exp(re) * Math.sin(im));
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the complex sine of this
|
||||
public Complex sin() {
|
||||
return new Complex(Math.sin(re) * Math.cosh(im), Math.cos(re) * Math.sinh(im));
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the complex cosine of this
|
||||
public Complex cos() {
|
||||
return new Complex(Math.cos(re) * Math.cosh(im), -Math.sin(re) * Math.sinh(im));
|
||||
}
|
||||
|
||||
// return a new com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex object whose value is the complex tangent of this
|
||||
public Complex tan() {
|
||||
return sin().divides(cos());
|
||||
}
|
||||
|
||||
// a static version of plus
|
||||
public static Complex plus(Complex a, Complex b) {
|
||||
double real = a.re + b.re;
|
||||
double imag = a.im + b.im;
|
||||
Complex sum = new Complex(real, imag);
|
||||
return sum;
|
||||
}
|
||||
|
||||
// See Section 3.3.
|
||||
public boolean equals(Object x) {
|
||||
if (x == null) return false;
|
||||
if (this.getClass() != x.getClass()) return false;
|
||||
Complex that = (Complex) x;
|
||||
return (this.re == that.re) && (this.im == that.im);
|
||||
}
|
||||
|
||||
// See Section 3.3.
|
||||
public int hashCode() {
|
||||
return Objects.hash(re, im);
|
||||
}
|
||||
|
||||
// sample client for testing
|
||||
public static void main(String[] args) {
|
||||
Complex a = new Complex(5.0, 6.0);
|
||||
Complex b = new Complex(-3.0, 4.0);
|
||||
|
||||
System.out.println("a = " + a);
|
||||
System.out.println("b = " + b);
|
||||
System.out.println("Re(a) = " + a.re());
|
||||
System.out.println("Im(a) = " + a.im());
|
||||
System.out.println("b + a = " + b.plus(a));
|
||||
System.out.println("a - b = " + a.minus(b));
|
||||
System.out.println("a * b = " + a.times(b));
|
||||
System.out.println("b * a = " + b.times(a));
|
||||
System.out.println("a / b = " + a.divides(b));
|
||||
System.out.println("(a / b) * b = " + a.divides(b).times(b));
|
||||
System.out.println("conj(a) = " + a.conjugate());
|
||||
System.out.println("|a| = " + a.abs());
|
||||
System.out.println("tan(a) = " + a.tan());
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,246 @@
|
||||
package com.example.ueberwachungssystem.Detection.Signalverarbeitung;
|
||||
// Source: https://introcs.cs.princeton.edu/java/97data/FFT.java.html
|
||||
|
||||
/******************************************************************************
|
||||
* Compilation: javac FFT.java
|
||||
* Execution: java FFT n
|
||||
* Dependencies: com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex.java
|
||||
*
|
||||
* Compute the FFT and inverse FFT of a length n complex sequence
|
||||
* using the radix 2 Cooley-Tukey algorithm.
|
||||
* Bare bones implementation that runs in O(n log n) time and O(n)
|
||||
* space. Our goal is to optimize the clarity of the code, rather
|
||||
* than performance.
|
||||
*
|
||||
* This implementation uses the primitive root of unity w = e^(-2 pi i / n).
|
||||
* Some resources use w = e^(2 pi i / n).
|
||||
*
|
||||
* Reference: https://www.cs.princeton.edu/~wayne/kleinberg-tardos/pdf/05DivideAndConquerII.pdf
|
||||
*
|
||||
* Limitations
|
||||
* -----------
|
||||
* - assumes n is a power of 2
|
||||
*
|
||||
* - not the most memory efficient algorithm (because it uses
|
||||
* an object type for representing complex numbers and because
|
||||
* it re-allocates memory for the subarray, instead of doing
|
||||
* in-place or reusing a single temporary array)
|
||||
*
|
||||
* For an in-place radix 2 Cooley-Tukey FFT, see
|
||||
* https://introcs.cs.princeton.edu/java/97data/InplaceFFT.java.html
|
||||
*
|
||||
******************************************************************************/
|
||||
|
||||
public class FFT {
|
||||
|
||||
// compute the FFT of x[], assuming its length n is a power of 2
|
||||
public static Complex[] fft(Complex[] x) {
|
||||
int n = x.length;
|
||||
|
||||
// base case
|
||||
if (n == 1) return new Complex[]{x[0]};
|
||||
|
||||
// radix 2 Cooley-Tukey FFT
|
||||
if (n % 2 != 0) {
|
||||
throw new IllegalArgumentException("n is not a power of 2");
|
||||
}
|
||||
|
||||
// compute FFT of even terms
|
||||
Complex[] even = new Complex[n / 2];
|
||||
for (int k = 0; k < n / 2; k++) {
|
||||
even[k] = x[2 * k];
|
||||
}
|
||||
Complex[] evenFFT = fft(even);
|
||||
|
||||
// compute FFT of odd terms
|
||||
Complex[] odd = even; // reuse the array (to avoid n log n space)
|
||||
for (int k = 0; k < n / 2; k++) {
|
||||
odd[k] = x[2 * k + 1];
|
||||
}
|
||||
Complex[] oddFFT = fft(odd);
|
||||
|
||||
// combine
|
||||
Complex[] y = new Complex[n];
|
||||
for (int k = 0; k < n / 2; k++) {
|
||||
double kth = -2 * k * Math.PI / n;
|
||||
Complex wk = new Complex(Math.cos(kth), Math.sin(kth));
|
||||
y[k] = evenFFT[k].plus(wk.times(oddFFT[k]));
|
||||
y[k + n / 2] = evenFFT[k].minus(wk.times(oddFFT[k]));
|
||||
}
|
||||
return y;
|
||||
}
|
||||
|
||||
|
||||
// compute the inverse FFT of x[], assuming its length n is a power of 2
|
||||
public static Complex[] ifft(Complex[] x) {
|
||||
int n = x.length;
|
||||
Complex[] y = new Complex[n];
|
||||
|
||||
// take conjugate
|
||||
for (int i = 0; i < n; i++) {
|
||||
y[i] = x[i].conjugate();
|
||||
}
|
||||
|
||||
// compute forward FFT
|
||||
y = fft(y);
|
||||
|
||||
// take conjugate again
|
||||
for (int i = 0; i < n; i++) {
|
||||
y[i] = y[i].conjugate();
|
||||
}
|
||||
|
||||
// divide by n
|
||||
for (int i = 0; i < n; i++) {
|
||||
y[i] = y[i].scale(1.0 / n);
|
||||
}
|
||||
|
||||
return y;
|
||||
|
||||
}
|
||||
|
||||
// compute the circular convolution of x and y
|
||||
public static Complex[] cconvolve(Complex[] x, Complex[] y) {
|
||||
|
||||
// should probably pad x and y with 0s so that they have same length
|
||||
// and are powers of 2
|
||||
if (x.length != y.length) {
|
||||
throw new IllegalArgumentException("Dimensions don't agree");
|
||||
}
|
||||
|
||||
int n = x.length;
|
||||
|
||||
// compute FFT of each sequence
|
||||
Complex[] a = fft(x);
|
||||
Complex[] b = fft(y);
|
||||
|
||||
// point-wise multiply
|
||||
Complex[] c = new Complex[n];
|
||||
for (int i = 0; i < n; i++) {
|
||||
c[i] = a[i].times(b[i]);
|
||||
}
|
||||
|
||||
// compute inverse FFT
|
||||
return ifft(c);
|
||||
}
|
||||
|
||||
|
||||
// compute the linear convolution of x and y
|
||||
public static Complex[] convolve(Complex[] x, Complex[] y) {
|
||||
Complex ZERO = new Complex(0, 0);
|
||||
|
||||
Complex[] a = new Complex[2 * x.length];
|
||||
for (int i = 0; i < x.length; i++) a[i] = x[i];
|
||||
for (int i = x.length; i < 2 * x.length; i++) a[i] = ZERO;
|
||||
|
||||
Complex[] b = new Complex[2 * y.length];
|
||||
for (int i = 0; i < y.length; i++) b[i] = y[i];
|
||||
for (int i = y.length; i < 2 * y.length; i++) b[i] = ZERO;
|
||||
|
||||
return cconvolve(a, b);
|
||||
}
|
||||
|
||||
// compute the DFT of x[] via brute force (n^2 time)
|
||||
public static Complex[] dft(Complex[] x) {
|
||||
int n = x.length;
|
||||
Complex ZERO = new Complex(0, 0);
|
||||
Complex[] y = new Complex[n];
|
||||
for (int k = 0; k < n; k++) {
|
||||
y[k] = ZERO;
|
||||
for (int j = 0; j < n; j++) {
|
||||
int power = (k * j) % n;
|
||||
double kth = -2 * power * Math.PI / n;
|
||||
Complex wkj = new Complex(Math.cos(kth), Math.sin(kth));
|
||||
y[k] = y[k].plus(x[j].times(wkj));
|
||||
}
|
||||
}
|
||||
return y;
|
||||
}
|
||||
|
||||
// display an array of com.example.ueberwachungssystem.Detection.Signalverarbeitung.Complex numbers to standard output
|
||||
public static void show(Complex[] x, String title) {
|
||||
System.out.println(title);
|
||||
System.out.println("-------------------");
|
||||
for (int i = 0; i < x.length; i++) {
|
||||
System.out.println(x[i]);
|
||||
}
|
||||
System.out.println();
|
||||
}
|
||||
|
||||
/***************************************************************************
|
||||
* Test client and sample execution
|
||||
*
|
||||
* % java FFT 4
|
||||
* x
|
||||
* -------------------
|
||||
* -0.03480425839330703
|
||||
* 0.07910192950176387
|
||||
* 0.7233322451735928
|
||||
* 0.1659819820667019
|
||||
*
|
||||
* y = fft(x)
|
||||
* -------------------
|
||||
* 0.9336118983487516
|
||||
* -0.7581365035668999 + 0.08688005256493803i
|
||||
* 0.44344407521182005
|
||||
* -0.7581365035668999 - 0.08688005256493803i
|
||||
*
|
||||
* z = ifft(y)
|
||||
* -------------------
|
||||
* -0.03480425839330703
|
||||
* 0.07910192950176387 + 2.6599344570851287E-18i
|
||||
* 0.7233322451735928
|
||||
* 0.1659819820667019 - 2.6599344570851287E-18i
|
||||
*
|
||||
* c = cconvolve(x, x)
|
||||
* -------------------
|
||||
* 0.5506798633981853
|
||||
* 0.23461407150576394 - 4.033186818023279E-18i
|
||||
* -0.016542951108772352
|
||||
* 0.10288019294318276 + 4.033186818023279E-18i
|
||||
*
|
||||
* d = convolve(x, x)
|
||||
* -------------------
|
||||
* 0.001211336402308083 - 3.122502256758253E-17i
|
||||
* -0.005506167987577068 - 5.058885073636224E-17i
|
||||
* -0.044092969479563274 + 2.1934338938072244E-18i
|
||||
* 0.10288019294318276 - 3.6147323062478115E-17i
|
||||
* 0.5494685269958772 + 3.122502256758253E-17i
|
||||
* 0.240120239493341 + 4.655566391833896E-17i
|
||||
* 0.02755001837079092 - 2.1934338938072244E-18i
|
||||
* 4.01805098805014E-17i
|
||||
*
|
||||
***************************************************************************/
|
||||
|
||||
public static void main(String[] args) {
|
||||
int n = Integer.parseInt(args[0]);
|
||||
Complex[] x = new Complex[n];
|
||||
|
||||
// original data
|
||||
for (int i = 0; i < n; i++) {
|
||||
x[i] = new Complex(i, 0);
|
||||
}
|
||||
show(x, "x");
|
||||
|
||||
// FFT of original data
|
||||
Complex[] y = fft(x);
|
||||
show(y, "y = fft(x)");
|
||||
|
||||
// FFT of original data
|
||||
Complex[] y2 = dft(x);
|
||||
show(y2, "y2 = dft(x)");
|
||||
|
||||
// take inverse FFT
|
||||
Complex[] z = ifft(y);
|
||||
show(z, "z = ifft(y)");
|
||||
|
||||
// circular convolution of x with itself
|
||||
Complex[] c = cconvolve(x, x);
|
||||
show(c, "c = cconvolve(x, x)");
|
||||
|
||||
// linear convolution of x with itself
|
||||
Complex[] d = convolve(x, x);
|
||||
show(d, "d = convolve(x, x)");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -1,196 +1,327 @@
|
||||
package com.example.ueberwachungssystem.Detection;
|
||||
|
||||
import android.Manifest;
|
||||
import android.annotation.SuppressLint;
|
||||
import android.content.Context;
|
||||
import android.content.pm.PackageManager;
|
||||
import android.graphics.ImageFormat;
|
||||
import android.media.Image;
|
||||
import android.util.Size;
|
||||
import android.os.CountDownTimer;
|
||||
import android.util.Log;
|
||||
import android.view.Display;
|
||||
import android.view.Surface;
|
||||
import android.view.WindowManager;
|
||||
import android.widget.ImageView;
|
||||
import android.widget.Toast;
|
||||
|
||||
import androidx.annotation.NonNull;
|
||||
import androidx.annotation.Nullable;
|
||||
import androidx.camera.core.CameraSelector;
|
||||
import androidx.camera.core.ExperimentalGetImage;
|
||||
import androidx.camera.core.ImageAnalysis;
|
||||
import androidx.camera.core.ImageProxy;
|
||||
import androidx.camera.core.Preview;
|
||||
import androidx.camera.core.VideoCapture;
|
||||
import androidx.camera.lifecycle.ProcessCameraProvider;
|
||||
import androidx.camera.view.PreviewView;
|
||||
import androidx.core.app.ActivityCompat;
|
||||
import androidx.core.content.ContextCompat;
|
||||
import androidx.lifecycle.LifecycleOwner;
|
||||
|
||||
import com.google.common.util.concurrent.ListenableFuture;
|
||||
|
||||
import java.nio.ByteBuffer;
|
||||
import org.opencv.android.OpenCVLoader;
|
||||
import org.opencv.core.Mat;
|
||||
import org.opencv.core.Size;
|
||||
|
||||
import java.io.File;
|
||||
import java.time.LocalDateTime;
|
||||
import java.time.format.DateTimeFormatter;
|
||||
import java.util.concurrent.ExecutionException;
|
||||
|
||||
|
||||
/**
|
||||
* Video Detector inherits some methods from abstract Detector class (more info there)
|
||||
*
|
||||
*
|
||||
* USE FROM MAIN ACTIVITY:
|
||||
*
|
||||
* VideoDetector vd = new VideoDetector(this);
|
||||
* vd.setPreview(previewView); //THIS IS OPTIONAL!
|
||||
* vd.setOnDetectionListener(new Detector.OnDetectionListener{...});
|
||||
* vd.startDetection();
|
||||
* vd.stopDetection
|
||||
*
|
||||
* */
|
||||
|
||||
|
||||
@ExperimentalGetImage
|
||||
public class VideoDetector extends Detector {
|
||||
|
||||
// Calling Activity
|
||||
private final Context context;
|
||||
|
||||
// Camera Provider
|
||||
private ProcessCameraProvider cameraProvider;
|
||||
private Boolean isDetectionRunning = false;
|
||||
// Preview Camera Image
|
||||
private PreviewView previewView = null;
|
||||
// Detect Violation
|
||||
private static final float PIXEL_THRESHOLD = 30f; // Luminosity (brightness channel of YUV_420_888)
|
||||
private static final float ALARM_THRESHOLD = 0.2f; // Percent of pixels changed
|
||||
private ByteBuffer previousBuffer = null;
|
||||
private ImageAnalysis imageAnalysis;
|
||||
private VideoCapture videoCapture;
|
||||
//private Preview preview;
|
||||
|
||||
// Logic
|
||||
private boolean isDetecting = false;
|
||||
private boolean isRecording = false;
|
||||
private boolean allowReportViolation = false;
|
||||
|
||||
// Image Processing
|
||||
private Mat previousImage = null;
|
||||
|
||||
// Debugging
|
||||
private ImageView inputImageView = null;
|
||||
private ImageView outputImageView = null;
|
||||
|
||||
// Recorder
|
||||
private File outputDir; // Default: in app files directory
|
||||
|
||||
|
||||
// Parameters
|
||||
private static final float ALARM_THRESHOLD = 0f; // Percent of pixels changed
|
||||
private static final float AREA_THRESHOLD = 10f;
|
||||
private static final int DILATE_ITERATIONS = 2;
|
||||
private static final float START_DELAY = 20000; // milliseconds
|
||||
private static final android.util.Size IMAGE_RES = new android.util.Size(640, 480);
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Constructor
|
||||
* @param context: the context of calling activity (usually "this")
|
||||
* */
|
||||
/** Constructor */
|
||||
public VideoDetector(Context context) {
|
||||
super();
|
||||
this.context = context;
|
||||
this.imageAnalysis = setupImageAnalysis();
|
||||
this.videoCapture = setupVideoCapture();
|
||||
this.outputDir = context.getFilesDir();
|
||||
//this.preview = new Preview.Builder().build();
|
||||
}
|
||||
|
||||
/** Get States */
|
||||
public boolean isDetecting() {
|
||||
return isDetecting;
|
||||
}
|
||||
public boolean isRecording(){
|
||||
return isRecording;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Starts the Video Detection
|
||||
* */
|
||||
/** Starts the Video Detection */
|
||||
@Override
|
||||
public void startDetection() {
|
||||
if (isDetectionRunning)
|
||||
// Check States
|
||||
if (isDetecting)
|
||||
return;
|
||||
// Request Camera Provider
|
||||
// Configure Image Analysis
|
||||
imageAnalysis = setupImageAnalysis();
|
||||
// Open CV startup check
|
||||
if (!OpenCVLoader.initDebug()) {
|
||||
Log.e("OpenCV", "Unable to load OpenCV!");
|
||||
return;
|
||||
} else
|
||||
Log.d("OpenCV", "OpenCV loaded Successfully!");
|
||||
// Get Process Camera Provider and start
|
||||
final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(context);
|
||||
//Check for Camera availability
|
||||
cameraProviderFuture.addListener(() -> {
|
||||
try {
|
||||
cameraProvider = cameraProviderFuture.get();
|
||||
bindAnalysis(cameraProvider);
|
||||
isDetectionRunning = true;
|
||||
previousBuffer = null;
|
||||
} catch (ExecutionException | InterruptedException e) {
|
||||
// No errors need to be handled for this Future. This should never be reached.
|
||||
isDetecting = true;
|
||||
bindCameraProvider();
|
||||
} catch (ExecutionException | InterruptedException e) {}
|
||||
}, ContextCompat.getMainExecutor(context));
|
||||
// Disable Violation Calling for Setup Time
|
||||
startViolationTimer(START_DELAY);
|
||||
}
|
||||
|
||||
/** Starts the Recorder */
|
||||
@SuppressLint("RestrictedApi")
|
||||
public void startRecording() {
|
||||
// Check States
|
||||
if (isRecording){
|
||||
return;
|
||||
}
|
||||
|
||||
videoCapture = setupVideoCapture();
|
||||
|
||||
final ListenableFuture<ProcessCameraProvider> cameraProviderFuture = ProcessCameraProvider.getInstance(context);
|
||||
cameraProviderFuture.addListener(() -> {
|
||||
try {
|
||||
cameraProvider = cameraProviderFuture.get();
|
||||
isRecording = true;
|
||||
bindCameraProvider();
|
||||
|
||||
File vidFile = new File(context.getFilesDir() + "/" + generateFileName() + ".mp4");
|
||||
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.RECORD_AUDIO) != PackageManager.PERMISSION_GRANTED) {
|
||||
return;
|
||||
}
|
||||
videoCapture.startRecording(
|
||||
new VideoCapture.OutputFileOptions.Builder(vidFile).build(),
|
||||
context.getMainExecutor(),
|
||||
new VideoCapture.OnVideoSavedCallback() {
|
||||
@Override
|
||||
public void onVideoSaved(@NonNull VideoCapture.OutputFileResults outputFileResults) {
|
||||
isRecording = false;
|
||||
Toast.makeText(context, "video recording saved", Toast.LENGTH_SHORT).show();
|
||||
}
|
||||
@Override
|
||||
public void onError(int videoCaptureError, @NonNull String message, @Nullable Throwable cause) {
|
||||
isRecording = false;
|
||||
Toast.makeText(context, "video recording failed", Toast.LENGTH_SHORT).show();
|
||||
}
|
||||
}
|
||||
);
|
||||
} catch (ExecutionException | InterruptedException ignored) {}
|
||||
}, ContextCompat.getMainExecutor(context));
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Stops the Video Detection
|
||||
* */
|
||||
/** Stops the Video Detection */
|
||||
@Override
|
||||
public void stopDetection() {
|
||||
if (!isDetectionRunning)
|
||||
if (!isDetecting || imageAnalysis == null)
|
||||
return;
|
||||
cameraProvider.unbind(imageAnalysis);
|
||||
isDetecting = false;
|
||||
allowReportViolation = false;
|
||||
}
|
||||
|
||||
/** Stops the Recording */
|
||||
@SuppressLint("RestrictedApi")
|
||||
public void stopRecording(){
|
||||
if(!isRecording)
|
||||
return;
|
||||
|
||||
videoCapture.stopRecording();
|
||||
cameraProvider.unbind(videoCapture);
|
||||
isRecording = false;
|
||||
}
|
||||
|
||||
/** Bind Camera Provider */
|
||||
private void bindCameraProvider() {
|
||||
// Specify which Camera to use
|
||||
CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
|
||||
cameraProvider.unbindAll();
|
||||
isDetectionRunning = false;
|
||||
cameraProvider.bindToLifecycle((LifecycleOwner) context, cameraSelector, imageAnalysis, videoCapture);
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Set PreviewView to show video feed while detecting
|
||||
* this is optional and does not need to be called
|
||||
* */
|
||||
public void setPreviewView(PreviewView previewView) {
|
||||
this.previewView = previewView;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Binds the Luminosity Analyzer (configure and run Analysis)
|
||||
* @param cameraProvider: CameraProvider of Context passed by Constructor
|
||||
* */
|
||||
private void bindAnalysis(@NonNull ProcessCameraProvider cameraProvider) {
|
||||
/** Setup Use Cases */
|
||||
private ImageAnalysis setupImageAnalysis() {
|
||||
// Configure and create Image Analysis
|
||||
ImageAnalysis.Builder builder = new ImageAnalysis.Builder();
|
||||
builder.setTargetResolution(new Size(640, 480));
|
||||
builder.setTargetResolution(IMAGE_RES);
|
||||
builder.setBackpressureStrategy(ImageAnalysis.STRATEGY_KEEP_ONLY_LATEST);
|
||||
builder.setOutputImageFormat(ImageAnalysis.OUTPUT_IMAGE_FORMAT_YUV_420_888);
|
||||
builder.setTargetRotation(Surface.ROTATION_90);
|
||||
ImageAnalysis imageAnalysis = builder.build();
|
||||
|
||||
// Set Analyzer
|
||||
imageAnalysis.setAnalyzer(ContextCompat.getMainExecutor(context), imageProxy -> {
|
||||
if (imageProxy.getFormat() == ImageFormat.YUV_420_888) {
|
||||
Image image = imageProxy.getImage();
|
||||
assert image != null;
|
||||
|
||||
// Changed Pixel Detection
|
||||
int pixelChanged = getChangedPixelCount(image);
|
||||
int width = image.getWidth();
|
||||
int height = image.getHeight();
|
||||
// Violation Handling
|
||||
Mat processed = processImage(imageProxy);
|
||||
|
||||
float percentPixelChanged = (float) 100f * pixelChanged / (width * height);
|
||||
int n = OpenCVHelper.countNonZeroPixels(processed);
|
||||
int pixelCount = image.getWidth() * image.getHeight();
|
||||
float percentChanged = (float) n / pixelCount;
|
||||
|
||||
if (percentPixelChanged > ALARM_THRESHOLD)
|
||||
reportViolation("0", "Video", percentPixelChanged);
|
||||
// Violation Condition
|
||||
if (percentChanged * 100 > ALARM_THRESHOLD) {
|
||||
if (allowReportViolation)
|
||||
reportViolation("Video", percentChanged);
|
||||
}
|
||||
}
|
||||
imageProxy.close();
|
||||
});
|
||||
// Create Preview
|
||||
Preview preview = new Preview.Builder().build();
|
||||
// Specify which Camera to use
|
||||
CameraSelector cameraSelector = new CameraSelector.Builder().requireLensFacing(CameraSelector.LENS_FACING_BACK).build();
|
||||
// Update PreviewView if set
|
||||
if (previewView != null)
|
||||
preview.setSurfaceProvider(previewView.getSurfaceProvider());
|
||||
return imageAnalysis;
|
||||
}
|
||||
|
||||
cameraProvider.bindToLifecycle((LifecycleOwner) context, cameraSelector, imageAnalysis, preview);
|
||||
@SuppressLint("RestrictedApi")
|
||||
private VideoCapture setupVideoCapture() {
|
||||
int rotation = getDisplayRotation();
|
||||
return new VideoCapture.Builder()
|
||||
.setTargetRotation(rotation)
|
||||
.build();
|
||||
}
|
||||
|
||||
/** Process Image to be used for Motion Detection */
|
||||
private Mat processImage(ImageProxy imageProxy){
|
||||
if (imageProxy == null)
|
||||
return null;
|
||||
// Image Transformation
|
||||
Mat imageMat = OpenCVHelper.extractYChannel(imageProxy);
|
||||
// Show Input Image
|
||||
if (inputImageView != null)
|
||||
OpenCVHelper.debugMat(imageMat, inputImageView);
|
||||
// Preprocess Image
|
||||
Mat preprocessed = imageMat;
|
||||
preprocessed = OpenCVHelper.addGaussianBlur(preprocessed, new Size(21, 21));
|
||||
preprocessed = OpenCVHelper.addBlur(preprocessed, new Size(3, 3));
|
||||
// Set Previous Image
|
||||
if (previousImage == null) {
|
||||
previousImage = preprocessed;
|
||||
return null;
|
||||
}
|
||||
// Process Image
|
||||
Mat processed = preprocessed.clone();
|
||||
processed = OpenCVHelper.thresholdPixels(processed, previousImage, 25);
|
||||
|
||||
for(int i = 0; i < DILATE_ITERATIONS; i++)
|
||||
processed = OpenCVHelper.dilateBinaryMat(processed, new Size(3,3));
|
||||
|
||||
processed = OpenCVHelper.thresholdContourArea(processed, AREA_THRESHOLD);
|
||||
// Output
|
||||
previousImage = preprocessed.clone();
|
||||
// Show Output Image
|
||||
if (outputImageView != null)
|
||||
OpenCVHelper.debugMat(processed, outputImageView);
|
||||
return processed;
|
||||
}
|
||||
|
||||
|
||||
/** Debug input and result of processing */
|
||||
public void debugProcessing(@NonNull ImageView inputImageView, @NonNull ImageView outputImageView){
|
||||
this.inputImageView = inputImageView;
|
||||
this.outputImageView = outputImageView;
|
||||
}
|
||||
|
||||
/**
|
||||
* Calculate Amount of Pixels changed using a threshold
|
||||
* @param image
|
||||
* */
|
||||
private int getChangedPixelCount(Image image) {
|
||||
Image.Plane[] planes = image.getPlanes();
|
||||
ByteBuffer buffer = planes[0].getBuffer();
|
||||
private void setPreviewView(@NonNull PreviewView previewView) {
|
||||
// Create Preview
|
||||
if (this.preview != null)
|
||||
this.preview.setSurfaceProvider(previewView.getSurfaceProvider());
|
||||
}
|
||||
*/
|
||||
|
||||
if (previousBuffer == null) {
|
||||
previousBuffer = ByteBuffer.allocate(buffer.capacity());
|
||||
buffer.rewind();
|
||||
previousBuffer.put(buffer);
|
||||
previousBuffer.rewind();
|
||||
return 0;
|
||||
|
||||
/** Generate File Name */
|
||||
private String generateFileName(){
|
||||
// Get the current timestamp
|
||||
LocalDateTime currentTime = LocalDateTime.now();
|
||||
// Define the format for the timestamp
|
||||
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyyMMdd_HHmmss");
|
||||
// Return the timestamp as a string
|
||||
return currentTime.format(formatter);
|
||||
}
|
||||
|
||||
int width = image.getWidth();
|
||||
int height = image.getHeight();
|
||||
|
||||
int yRowStride = image.getPlanes()[0].getRowStride();
|
||||
int yPixelStride = image.getPlanes()[0].getPixelStride();
|
||||
|
||||
int changedPixelCount = 0;
|
||||
|
||||
// Count changed pixels
|
||||
for (int y = 0; y < height; ++y) {
|
||||
for (int x = 0; x < width; x++) {
|
||||
int index = (y * yRowStride) + (x * yPixelStride);
|
||||
int luminosity = (buffer.get(index) & 0xff);
|
||||
int previousLuminosity = (previousBuffer.get(index) & 0xff);
|
||||
int diff = Math.abs(luminosity - previousLuminosity);
|
||||
if (diff > PIXEL_THRESHOLD)
|
||||
changedPixelCount++;
|
||||
}
|
||||
/** Get current Display Rotation */
|
||||
private int getDisplayRotation() {
|
||||
WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
|
||||
Display display = windowManager.getDefaultDisplay();
|
||||
return display.getRotation();
|
||||
}
|
||||
|
||||
// Reset and copy Byte Buffer
|
||||
buffer.rewind();
|
||||
previousBuffer.rewind();
|
||||
previousBuffer.put(buffer);
|
||||
/** Start delay until Violation Report is allowed */
|
||||
private void startViolationTimer(float setupTime) {
|
||||
new CountDownTimer((long) (START_DELAY), 100) {
|
||||
@Override
|
||||
public void onTick(long millisUntilFinished) {
|
||||
}
|
||||
@Override
|
||||
public void onFinish() {
|
||||
allowReportViolation = true;
|
||||
}
|
||||
}.start();
|
||||
}
|
||||
|
||||
return changedPixelCount;
|
||||
public void setOutputDir(File outputDir) {
|
||||
this.outputDir = outputDir;
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,43 @@
|
||||
package com.example.ueberwachungssystem;
|
||||
|
||||
|
||||
import android.app.Activity;
|
||||
import android.content.Context;
|
||||
import android.content.pm.PackageManager;
|
||||
import android.widget.Toast;
|
||||
|
||||
import androidx.core.app.ActivityCompat;
|
||||
import androidx.core.content.ContextCompat;
|
||||
|
||||
public class PermissionHandler {
|
||||
private final Context context;
|
||||
private static final int PERMISSION_REQUEST_CODE = 23409;
|
||||
private static final String[] permissions = new String[]{
|
||||
android.Manifest.permission.CAMERA,
|
||||
android.Manifest.permission.RECORD_AUDIO
|
||||
};
|
||||
|
||||
public PermissionHandler(Context context) {
|
||||
this.context = context;
|
||||
}
|
||||
|
||||
public boolean hasPermissions() {
|
||||
boolean permissionState = true;
|
||||
for (String permission: permissions) {
|
||||
permissionState = permissionState && ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED;
|
||||
}
|
||||
return permissionState;
|
||||
}
|
||||
|
||||
public void getPermissions() {
|
||||
if (!hasPermissions())
|
||||
ActivityCompat.requestPermissions((Activity) context, permissions, PERMISSION_REQUEST_CODE);
|
||||
}
|
||||
|
||||
public void showPermissionToast() {
|
||||
if (hasPermissions())
|
||||
Toast.makeText(context, "permissions available", Toast.LENGTH_SHORT).show();
|
||||
else
|
||||
Toast.makeText(context, "permissions missing", Toast.LENGTH_SHORT).show();
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,48 @@
|
||||
package com.example.ueberwachungssystem;
|
||||
|
||||
import static android.Manifest.permission.INTERNET;
|
||||
import static android.Manifest.permission.CAMERA;
|
||||
import static android.Manifest.permission.RECORD_AUDIO;
|
||||
|
||||
import android.content.pm.PackageManager;
|
||||
import android.os.Handler;
|
||||
import android.widget.Toast;
|
||||
|
||||
import androidx.appcompat.app.AppCompatActivity;
|
||||
import androidx.core.content.ContextCompat;
|
||||
|
||||
public class PermissionRequest extends AppCompatActivity{
|
||||
private static final int PERMISSION_REQUEST_CODE = 123;
|
||||
private final MainActivity mainActivity;
|
||||
|
||||
Handler handler = new Handler();
|
||||
|
||||
public PermissionRequest(MainActivity mainActivity) {
|
||||
this.mainActivity = mainActivity;
|
||||
}
|
||||
|
||||
public StringBuilder rechtePruefen() {
|
||||
boolean rechtKamera = ContextCompat.checkSelfPermission(mainActivity, CAMERA) == PackageManager.PERMISSION_GRANTED;
|
||||
boolean rechtMikrofon = ContextCompat.checkSelfPermission(mainActivity, RECORD_AUDIO) == PackageManager.PERMISSION_GRANTED;
|
||||
boolean rechtInternet = ContextCompat.checkSelfPermission(mainActivity, INTERNET) == PackageManager.PERMISSION_GRANTED;
|
||||
StringBuilder sb = new StringBuilder();
|
||||
sb.append("Rechte prüfen:")
|
||||
.append("\nKamera: ").append(rechtKamera)
|
||||
.append("\nMikrofon: ").append(rechtMikrofon)
|
||||
.append("\nInternet: ").append(rechtInternet);
|
||||
//mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(sb));
|
||||
if (!(rechtKamera && rechtMikrofon && rechtInternet)){
|
||||
handler.post(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
Toast.makeText(mainActivity.getApplicationContext(),"Es werden Rechte benötigt", Toast.LENGTH_LONG).show();
|
||||
}
|
||||
});
|
||||
}
|
||||
return sb;
|
||||
}
|
||||
|
||||
public void rechteAnfordern() {
|
||||
mainActivity.requestPermissions(new String[]{CAMERA, RECORD_AUDIO, INTERNET}, PERMISSION_REQUEST_CODE);
|
||||
}
|
||||
}
|
||||
@ -0,0 +1,86 @@
|
||||
package com.example.ueberwachungssystem;
|
||||
|
||||
import android.view.Gravity;
|
||||
import android.view.LayoutInflater;
|
||||
import android.view.MotionEvent;
|
||||
import android.view.View;
|
||||
import android.widget.Button;
|
||||
import android.widget.LinearLayout;
|
||||
import android.widget.PopupWindow;
|
||||
import android.widget.TextView;
|
||||
|
||||
public class PopUpClass {
|
||||
private final MainActivity mainActivity;
|
||||
|
||||
PermissionRequest permission;
|
||||
TextView PopUpText;
|
||||
|
||||
|
||||
public PopUpClass(MainActivity mainActivity) {
|
||||
this.mainActivity = mainActivity;
|
||||
permission = new PermissionRequest(mainActivity);
|
||||
}
|
||||
|
||||
//PopupWindow display method
|
||||
|
||||
public void showPopupWindow(final View view) {
|
||||
|
||||
|
||||
//Create a View object yourself through inflater
|
||||
LayoutInflater inflater = (LayoutInflater) view.getContext().getSystemService(view.getContext().LAYOUT_INFLATER_SERVICE);
|
||||
View popupView = inflater.inflate(R.layout.popup_window, null);
|
||||
|
||||
//Specify the length and width through constants
|
||||
int width = LinearLayout.LayoutParams.WRAP_CONTENT;
|
||||
int height = LinearLayout.LayoutParams.WRAP_CONTENT;
|
||||
|
||||
//Make Inactive Items Outside Of PopupWindow
|
||||
boolean focusable = true;
|
||||
|
||||
//Create a window with our parameters
|
||||
final PopupWindow popupWindow = new PopupWindow(popupView,width*1, height*1, focusable);
|
||||
|
||||
//Set the location of the window on the screen
|
||||
popupWindow.showAtLocation(view, Gravity.CENTER, 0, 0);
|
||||
|
||||
//Initialize the elements of our window, install the handler
|
||||
|
||||
PopUpText = popupView.findViewById(R.id.titleText);
|
||||
|
||||
Button buttonEdit = popupView.findViewById(R.id.RechteAnfordern);
|
||||
buttonEdit.setOnClickListener(new View.OnClickListener() {
|
||||
@Override
|
||||
public void onClick(View v) {
|
||||
RechteAnfordern();
|
||||
}
|
||||
});
|
||||
|
||||
//Handler for clicking on the inactive zone of the window
|
||||
|
||||
popupView.setOnTouchListener(new View.OnTouchListener() {
|
||||
@Override
|
||||
public boolean onTouch(View v, MotionEvent event) {
|
||||
|
||||
//Close the window when clicked
|
||||
popupWindow.dismiss();
|
||||
return true;
|
||||
}
|
||||
});
|
||||
}
|
||||
public void RechtePrüfen(){
|
||||
StringBuilder Text = permission.rechtePruefen();
|
||||
PopUpText.setText(Text);
|
||||
}
|
||||
public void RechteAnfordern(){
|
||||
permission.rechteAnfordern();
|
||||
StringBuilder Text = permission.rechtePruefen();
|
||||
PopUpText.setText(Text);
|
||||
}
|
||||
public void Sensoren(){
|
||||
PopUpText.setText("Es können 3 verschiedene Sensoren verwendet werden \n -1. Beschleunigungssensor\n -2. Mikrofon\n -3. Kamera");
|
||||
}
|
||||
public void Impressum(){
|
||||
PopUpText.setText("Die Ueberwachungsapp wurde im Rahmen eines Praktikums der TH-Nürnberg programmiert");
|
||||
}
|
||||
|
||||
}
|
||||
@ -1,5 +1,12 @@
|
||||
package com.example.ueberwachungssystem;
|
||||
import android.annotation.SuppressLint;
|
||||
import android.widget.Toast;
|
||||
|
||||
import androidx.annotation.NonNull;
|
||||
|
||||
import com.example.ueberwachungssystem.Detection.DetectionReport;
|
||||
import com.example.ueberwachungssystem.Detection.Detector;
|
||||
import com.example.ueberwachungssystem.Detection.DetectorService;
|
||||
|
||||
import java.io.IOException;
|
||||
import java.net.DatagramPacket;
|
||||
@ -14,7 +21,7 @@ import java.util.Date;
|
||||
import java.util.Enumeration;
|
||||
|
||||
public class WifiCommunication {
|
||||
private final MainActivity mainActivity;
|
||||
//private final MainActivity mainActivity;
|
||||
private final InetAddress address;
|
||||
private final int port;
|
||||
|
||||
@ -22,9 +29,11 @@ public class WifiCommunication {
|
||||
volatile private boolean send;
|
||||
private final DatagramSocket socket;
|
||||
volatile private boolean running;
|
||||
|
||||
private OnConnectionListener listener;
|
||||
@SuppressLint("SetTextI18n")
|
||||
public WifiCommunication(MainActivity mainActivity, int port) {
|
||||
this.mainActivity = mainActivity;
|
||||
public WifiCommunication(int port) {
|
||||
//this.mainActivity = mainActivity;
|
||||
this.port = port;
|
||||
try {
|
||||
socket = new DatagramSocket(this.port);
|
||||
@ -37,8 +46,23 @@ public class WifiCommunication {
|
||||
} catch (SocketException | UnknownHostException e) {
|
||||
throw new RuntimeException(e);
|
||||
}
|
||||
//Toast.makeText(mainActivity.getApplicationContext(),"Communication running", Toast.LENGTH_SHORT).show();
|
||||
//mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText("Communication running"));
|
||||
}
|
||||
|
||||
public interface OnConnectionListener {
|
||||
void onConnection(StringBuffer data);
|
||||
}
|
||||
public void setOnConnectionListener(@NonNull OnConnectionListener listener) {
|
||||
this.listener = listener;
|
||||
}
|
||||
|
||||
public void sendWifiData(StringBuffer wifiMessage) {
|
||||
if (listener != null) {
|
||||
listener.onConnection(wifiMessage);
|
||||
}
|
||||
}
|
||||
|
||||
private class ReceiveThread extends Thread {
|
||||
private StringBuffer rxStringBuffer = new StringBuffer();
|
||||
private String rxString="";
|
||||
@ -49,20 +73,16 @@ public class WifiCommunication {
|
||||
try {
|
||||
do {
|
||||
byte[] receiveData = new byte[512];
|
||||
InetAddress fromAdress;
|
||||
int fromPort;
|
||||
DatagramPacket rxPacket = new DatagramPacket(receiveData, receiveData.length);
|
||||
socket.receive(rxPacket);
|
||||
fromAdress = rxPacket.getAddress();
|
||||
fromPort = rxPacket.getPort();
|
||||
rxString = new String(rxPacket.getData());
|
||||
if(!previousRxString.equals(rxString)) {
|
||||
rxString = new String(receiveData, 0, rxPacket.getLength());
|
||||
String[] splitrxString = rxString.split(",");
|
||||
if(!previousRxString.equals(rxString) && splitrxString[0].equals("1") && splitrxString.length==7) {
|
||||
rxStringBuffer.append(rxString).append("\n");
|
||||
sendWifiData(rxStringBuffer);
|
||||
//mainActivity.runOnUiThread(() -> mainActivity.tvMessages.setText(rxStringBuffer));
|
||||
previousRxString = rxString;
|
||||
}
|
||||
|
||||
|
||||
} while (running);
|
||||
}
|
||||
catch (IOException e) {
|
||||
@ -83,18 +103,13 @@ public class WifiCommunication {
|
||||
Date curDate = new Date(System.currentTimeMillis());
|
||||
String str = formatter.format(curDate);
|
||||
byte[] send_Data = new byte[512];
|
||||
String txString = (str+ ",Gruppe2," + getLocalIpAddress() + ",An,Video," +messageToSend);
|
||||
String txString = ("1," +str+ ",Gruppe2," + getLocalIpAddress() + ",An,Video," +messageToSend);
|
||||
send_Data = txString.getBytes();
|
||||
|
||||
DatagramPacket txPacket = new DatagramPacket(send_Data, txString.length(), address, port);
|
||||
|
||||
for(int i = 0; i < 500; i++) {
|
||||
for(int i = 0; i < 300; i++) {
|
||||
socket.send(txPacket);
|
||||
/*try{
|
||||
sleep(10);
|
||||
}catch (InterruptedException e){
|
||||
e.printStackTrace();
|
||||
}*/
|
||||
}
|
||||
}
|
||||
} while (running);
|
||||
|
||||
29
app/src/main/res/layout/popup_window.xml
Normal file
29
app/src/main/res/layout/popup_window.xml
Normal file
@ -0,0 +1,29 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
|
||||
xmlns:app="http://schemas.android.com/apk/res-auto"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:paddingLeft="10dp"
|
||||
android:paddingRight="10dp"
|
||||
android:gravity="center"
|
||||
android:background="#A5ACB2">
|
||||
|
||||
<TextView
|
||||
android:id="@+id/titleText"
|
||||
android:layout_gravity="center"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:textSize="20sp"
|
||||
android:textStyle="italic"
|
||||
android:padding="10dp"/>
|
||||
|
||||
<Button
|
||||
android:id="@+id/RechteAnfordern"
|
||||
android:layout_width="wrap_content"
|
||||
android:layout_height="wrap_content"
|
||||
android:layout_weight="1"
|
||||
android:text="Rechte Anfordern" />
|
||||
|
||||
|
||||
|
||||
</LinearLayout>
|
||||
9
app/src/main/res/menu/options_menu.xml
Normal file
9
app/src/main/res/menu/options_menu.xml
Normal file
@ -0,0 +1,9 @@
|
||||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
|
||||
<item android:id="@+id/Rechteverwaltung"
|
||||
android:title="Rechteverwaltung" />
|
||||
<item android:id="@+id/Sensoren"
|
||||
android:title="Sensoren" />
|
||||
<item android:id="@+id/Impressum"
|
||||
android:title="Impressum" />
|
||||
</menu>
|
||||
@ -1,5 +1,5 @@
|
||||
// Top-level build file where you can add configuration options common to all sub-projects/modules.
|
||||
plugins {
|
||||
id 'com.android.application' version '7.4.2' apply false
|
||||
id 'com.android.library' version '7.4.2' apply false
|
||||
id 'com.android.application' version '8.0.0' apply false
|
||||
id 'com.android.library' version '8.0.0' apply false
|
||||
}
|
||||
@ -19,3 +19,5 @@ android.useAndroidX=true
|
||||
# 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
|
||||
android.defaults.buildfeatures.buildconfig=true
|
||||
android.nonFinalResIds=false
|
||||
2
gradle/wrapper/gradle-wrapper.properties
vendored
2
gradle/wrapper/gradle-wrapper.properties
vendored
@ -1,6 +1,6 @@
|
||||
#Thu May 11 15:19:24 CEST 2023
|
||||
distributionBase=GRADLE_USER_HOME
|
||||
distributionUrl=https\://services.gradle.org/distributions/gradle-7.5-bin.zip
|
||||
distributionUrl=https\://services.gradle.org/distributions/gradle-8.0-bin.zip
|
||||
distributionPath=wrapper/dists
|
||||
zipStorePath=wrapper/dists
|
||||
zipStoreBase=GRADLE_USER_HOME
|
||||
|
||||
@ -14,3 +14,4 @@ dependencyResolutionManagement {
|
||||
}
|
||||
rootProject.name = "Ueberwachungssystem"
|
||||
include ':app'
|
||||
include ':app'
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user