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Jan Feemers 2020-06-10 16:33:57 +02:00
commit 2eaf328d05
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*.iml
.gradle
/local.properties
/.idea/caches
/.idea/libraries
/.idea/modules.xml
/.idea/workspace.xml
/.idea/navEditor.xml
/.idea/assetWizardSettings.xml
.DS_Store
/build
/captures
.externalNativeBuild
.cxx

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<rules>
<section>
<rule>
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<NAME>xmlns:android</NAME>
<XML_ATTRIBUTE />
<XML_NAMESPACE>^$</XML_NAMESPACE>
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<NAME>.*:name</NAME>
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<option name="testRunner" value="PLATFORM" />
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<option name="externalProjectPath" value="$PROJECT_DIR$" />
<option name="modules">
<set>
<option value="$PROJECT_DIR$" />
<option value="$PROJECT_DIR$/app" />
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/build

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app/build.gradle Normal file
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apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.feemers.android.fftdrawer"
minSdkVersion 16
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}

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

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

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app/src/main/AndroidManifest.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.feemers.android.fftdrawer">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

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app/src/main/java/com/feemers/android/fftdrawer/Animation.java Normal file
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package com.feemers.android.fftdrawer;
import android.graphics.Canvas;
public interface Animation {
void Draw(Canvas canvas);
void SetBackgroundColor(int c);
}

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app/src/main/java/com/feemers/android/fftdrawer/Bar.java Normal file
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package com.feemers.android.fftdrawer;
import android.graphics.Color;
public class Bar {
private float value;
private int harmonics;
private float frequency;
private final int color;
public Bar(float value, int harmonics) {
this.value = value;
this.harmonics = harmonics;
color = Color.rgb(0,255,0);
}
public float getValue(){
return value;
}
public int getHarmonics() {
return harmonics;
}
public int getColor(){
return color;
}
}

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app/src/main/java/com/feemers/android/fftdrawer/BarChart.java Normal file
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package com.feemers.android.fftdrawer;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import java.util.ArrayList;
public class BarChart implements Animation {
private final int length;
private ArrayList<Bar> bars = null;
private Paint paint;
private int backgroundColor;
public BarChart(int length){
this.length = length;
bars = new ArrayList<>();
paint = new Paint();
paint.setAntiAlias(true);
backgroundColor = Color.rgb(0,0,0);
}
public void newValues(double[] values){
bars.clear();
for(int i = 0; i < length; i++){
float tmp = (float) values[i];
bars.add(new Bar(tmp, i));
}
}
@Override
public void Draw(Canvas canvas) {
paint.setStyle(Paint.Style.FILL);
canvas.drawColor(backgroundColor);
// find max
float maxValue = 0;
for(Bar b : bars){
maxValue = maxValue >= b.getValue() ? maxValue : b.getValue();
}
for(Bar b : bars){
paint.setColor(b.getColor());
float width = canvas.getWidth();
float heigth = canvas.getHeight();
float widthOfBar = width / length;
float left= b.getHarmonics() * widthOfBar;
float top = heigth - heigth * b.getValue() / maxValue;
float rigth = (b.getHarmonics()+1) * widthOfBar;
float buttom = heigth;
canvas.drawRect(left, top, rigth ,buttom, paint);
}
}
@Override
public void SetBackgroundColor(int c) {
backgroundColor = c;
}
}

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app/src/main/java/com/feemers/android/fftdrawer/BarChartView.java Normal file
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package com.feemers.android.fftdrawer;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
public class BarChartView extends SurfaceView implements Runnable {
private Animation animation;
private SurfaceHolder surfaceHolder;
private Thread thread = null;
private volatile boolean running = false;
private int backgroudColor = 0;
private String name = "";
private int sleepTime = 0;
private volatile boolean update;
public BarChartView(Context context) {
super(context);
surfaceHolder = getHolder();
}
public BarChartView(Context context, AttributeSet attributeSet){
super(context, attributeSet);
surfaceHolder = getHolder();
ReadXML(attributeSet);
}
private void ReadXML(AttributeSet attributeSet){
android.content.res.TypedArray typedArray = getContext().obtainStyledAttributes(attributeSet, R.styleable.BarChartView);
//String s = typedArray.getString(R.styleable.GrafikView_android_text);
//name = (s!=null) ? s : "";
backgroudColor = typedArray.getColor(R.styleable.BarChartView_backgroundColor, Color.BLACK);
typedArray.recycle();
log(", hintergrundFarbe=" + backgroudColor);
}
public void setAnimation(Animation animation){
this.animation = animation;
this.animation.SetBackgroundColor(backgroudColor);
}
private void log(String s) {
Log.d(this.getClass().getSimpleName(), s);
}
public void Start(){
running = true;
thread = new Thread(this);
thread.start();
log("Thread started");
}
public void Stop(){
running = false;
while(true){
try{
thread.join();
log("Thread stopped");
break;
}catch (InterruptedException e){
e.printStackTrace();
}
}
}
public void Draw(){
update = true;
}
@Override
public void run() {
while (running) {
if (update) {
if (!surfaceHolder.getSurface().isValid()) {
continue;
}
Canvas canvas = surfaceHolder.lockCanvas();
if (animation != null) {
animation.Draw(canvas);
update = false;
}
surfaceHolder.unlockCanvasAndPost(canvas);
}
try {
Thread.sleep(5);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}

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app/src/main/java/com/feemers/android/fftdrawer/MainActivity.java Normal file
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package com.feemers.android.fftdrawer;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Context;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.widget.TextView;
import android.widget.TimePicker;
import com.feemers.android.fftdrawer.SignalProcessing.DetectorTimedomain;
import com.feemers.android.fftdrawer.SignalProcessing.Logger;
import com.feemers.android.fftdrawer.SignalProcessing.SignalProcessingControl;
import java.util.Observable;
import java.util.Observer;
public class MainActivity extends AppCompatActivity implements Observer {
private TextView textView1;
private BarChartView grafikView1;
private TextView textView2;
private BarChartView grafikView2;
private SignalProcessingControl signalProcessingControl;
private DetectorTimedomain detectorTimedomain;
private SensorManager sensorManager;
private BarChart barChart;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textView1 = findViewById(R.id.textView1);
textView1.setText("Nr.1 ");
textView2 = findViewById(R.id.textView2);
textView2.setText("Nr. 2");
double[] test = new double[64];
for (int i = 0; i < 64; i++){
test[i] = 0;
}
barChart = new BarChart(64);
barChart.newValues(test);
grafikView1 = findViewById(R.id.graficView1);
grafikView1.setAnimation(barChart);
grafikView2 = findViewById(R.id.graficView2);
grafikView2.setAnimation(new BarChart(64));
Logger logger = new Logger(this.getClass().getSimpleName(), "");
detectorTimedomain = new DetectorTimedomain(20);
detectorTimedomain.setThreshold(12);
sensorManager = (SensorManager) getSystemService(Context.SENSOR_SERVICE);
signalProcessingControl = new SignalProcessingControl(sensorManager, logger);
signalProcessingControl.init();
signalProcessingControl.getNotifier().addObserver(this);
signalProcessingControl.start();
grafikView1.Start();
grafikView2.Start();
}
@Override
public void update(Observable o, Object arg) {
double[] newData = signalProcessingControl.getNotifier().getData();
barChart.newValues(newData);
grafikView1.Draw();
grafikView2.Draw();
}
}

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app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/Complex.java Normal file
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package com.feemers.android.fftdrawer.SignalProcessing;
/******************************************************************************
* Compilation: javac Complex.java
* Execution: java Complex
*
* Data type for complex numbers.
*
* The data type is "immutable" so once you create and initialize
* a Complex object, you cannot change it. The "final" keyword
* when declaring re and im enforces this rule, making it a
* compile-time error to change the .re or .im instance variables after
* they've been initialized.
*
* % java Complex
* a = 5.0 + 6.0i
* b = -3.0 + 4.0i
* Re(a) = 5.0
* Im(a) = 6.0
* b + a = 2.0 + 10.0i
* a - b = 8.0 + 2.0i
* a * b = -39.0 + 2.0i
* b * a = -39.0 + 2.0i
* a / b = 0.36 - 1.52i
* (a / b) * b = 5.0 + 6.0i
* conj(a) = 5.0 - 6.0i
* |a| = 7.810249675906654
* tan(a) = -6.685231390246571E-6 + 1.0000103108981198i
*
******************************************************************************/
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 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 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 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 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 Complex object whose value is the conjugate of this
public Complex conjugate() {
return new Complex(re, -im);
}
// return a new 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 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 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 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 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);
}
}

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app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/DetectorFFT.java Normal file
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app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/DetectorImpl.java Normal file
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package com.feemers.android.fftdrawer.SignalProcessing;
import java.util.ArrayList;
public class DetectorImpl implements IDetector {
protected ArrayList<Double> m_buffer;
protected int m_buffer_SIZE; //TODO: Make this this dependent to the sampleRate
protected double m_sampleRate;
protected ThresholdCalculator m_thresholdCalculator;
protected double m_threshold;
protected Notifier m_Notifier;
public DetectorImpl(int windowSize)
{
m_buffer = new ArrayList<>();
m_buffer_SIZE = 128; //TODO later: Change this hardcoded value and calculate it during runtime -> depending on sampleRate
m_sampleRate = 0;
m_thresholdCalculator = new ThresholdCalculator(windowSize);
m_threshold = m_thresholdCalculator.getThreshold();
}
@Override
public void onNewSample(double sample) {
m_thresholdCalculator.onNewSample(sample);
m_threshold = m_thresholdCalculator.getThreshold();
}
@Override
public void setSampleRate(double sampleRate) {
m_sampleRate = sampleRate;
}
@Override
public void setThreshold(double threshold) {
// Call this to set the constant part of the threshold determined by the user
m_thresholdCalculator.setConstantThresholdPart(threshold);
}
public void connectNotifier(Notifier notifier){
if(notifier == null){
throw new AssertionError("Notifier is null");
}
m_Notifier = notifier;
}
}

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app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/DetectorTimedomain.java Normal file
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package com.feemers.android.fftdrawer.SignalProcessing;
import android.util.Log;
import android.util.Pair;
import java.util.ArrayList;
public class DetectorTimedomain extends DetectorImpl {
private boolean m_calculate_amplitude;
private int m_threshold_cnt;
private int m_sample_cnt;
public DetectorTimedomain(int windowSize) {
super(windowSize);
Log.d("DetectorTimedomain", "DetectorTimedomain() - Constructor called");
m_calculate_amplitude = false;
m_threshold_cnt = 0;
m_sample_cnt = 0;
}
@Override
public void onNewSample(double sample) {
super.onNewSample(sample);
check_for_earthquake(sample);
}
public void check_for_earthquake(double sample)
{
// This method checks if threshold was exceeded and calculates the amplitude if enough values are available
// Possible combinitions of the return values:
// 1: false, 0.0 -> Threshold wasn't exceeded
// 2: true, 0.0 -> Threshold was exceeded, but no value for amplitude is available yet (because m_buffer isn't filled yet)
// 3: true, amplitude -> Threshold was exceeded and a value for amplitude is available
//TODO: find better solution for returning the results -> temp solution: No return-values but printing to logcat instead. Use Notifier later.
Pair<Boolean, Double> return_pair = new Pair<Boolean, Double>(false, 0.0);
if ((sample > m_threshold) && !(m_calculate_amplitude)) {
Log.d("DetectorTimedomain", "threshold was exceeded. threshold: " + m_threshold); //TODO: send this info with notifier instead
m_threshold_cnt++;
// Later: add Logger entry
m_calculate_amplitude = true;
m_buffer = new ArrayList<>(); //resetting to an empty ArrayList
}
if (m_calculate_amplitude) {
if (m_sample_cnt >= m_buffer_SIZE) {
//Vector sensor_samples is filled -> determine amplitude
double amplitude = calculate_maximum(m_buffer);
m_sample_cnt = 0;
m_calculate_amplitude = false;
Log.d("DetectorTimedomain", "Maximum calculated: " + amplitude); //TODO: send this message with notifier instead
return_pair = new Pair<Boolean, Double>(true, amplitude);
// Later: add Logger entry
} else {
m_buffer.add(sample);
m_sample_cnt++;
return_pair = new Pair<Boolean, Double>(true, 0.0);
}
}
m_Notifier.sendEvent();
//return return_pair;
}
private double calculate_maximum(ArrayList<Double> samples) {
double maximum = 0;
for (double sample : samples) {
if (maximum < sample)
maximum = sample;
}
return maximum;
}
}

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app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/FFT.java Normal file
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package com.feemers.android.fftdrawer.SignalProcessing;
/******************************************************************************
* Compilation: javac FFT.java
* Execution: java FFT n
* Dependencies: 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;
}
/***************************************************************************
* 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
*
***************************************************************************/
}

8
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/IDetector.java Normal file
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@ -0,0 +1,8 @@
package com.feemers.android.fftdrawer.SignalProcessing;
public interface IDetector {
public void onNewSample(double sample);
public void setSampleRate(double sampleRate);
public void setThreshold(double threshold);
public void connectNotifier(Notifier notifier);
}

11
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/ISensor.java Normal file
View File

@ -0,0 +1,11 @@
package com.feemers.android.fftdrawer.SignalProcessing;
public interface ISensor {
public double getSampleRate();
public void connectDetector(IDetector detector);
public void startSampling();
public void stopSampling();
}

76
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/Logger.java Normal file
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@ -0,0 +1,76 @@
package com.feemers.android.fftdrawer.SignalProcessing;
import android.app.Activity;
import android.util.Log;
import android.widget.TextView;
import java.io.PrintWriter;
import java.io.StringWriter;
public class Logger
{
private TextView textView;
private StringBuffer sb = new StringBuffer();
private String tag;
private Activity activity;
public Logger(String tag, String logInitText)
{
this.activity = null;
this.tag = tag;
sb.append(logInitText);
}
public Logger(Activity activity, String tag, TextView textView, String logInitText)
{
this.activity = activity;
this.tag = tag;
this.textView = textView;
sb.append(logInitText);
}
public void log(String s)
{
Log.d(tag, s);
sb.append(s).append("\n");
if (textView != null)
{
if(activity !=null)
{
activity.runOnUiThread(new Runnable()
{
@Override
public void run()
{
textView.setText(sb.toString());
}
});
}
else
{
textView.setText(sb.toString());
}
}
}
public void log(Exception e)
{
StringWriter sw = new StringWriter();
e.printStackTrace(new PrintWriter(sw));
log(sw.toString());
}
public void clearLog()
{
sb.setLength(0);
if (textView != null)
{
textView.setText("");
}
}
public String getLoggedText()
{
return sb.toString();
}
}

95
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/MySensor.java Normal file
View File

@ -0,0 +1,95 @@
package com.feemers.android.fftdrawer.SignalProcessing;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.util.Log;
public class MySensor extends SensorImpl implements SensorEventListener {
private SensorManager sensorManager;
private Sensor m_sensor;
private int sensorType = Sensor.TYPE_ACCELEROMETER;
private long time_former_value;
private long time_current_value;
private int sample_cnt;
public MySensor()
{
m_sensor = null;
time_former_value = 0;
time_current_value = 0;
sample_cnt = 0;
}
@Override
public void onSensorChanged(SensorEvent event)
{
//Log.d("MySensor","onSensorChanged()\n");
// Calculating the sample rate
time_current_value = System.currentTimeMillis();
long period = time_current_value - time_former_value;
if ((time_former_value != 0) && (period != 0)) {
m_sampleRate = (double) (1.0 / period) * 1000.0; // in Hz
m_detector.setSampleRate(m_sampleRate);
}
/*if (sample_cnt == 100) //TODO: Delete this part before final use (inc. sample_cnt) -> only meant for debugging
{
Log.d("MySensor", "m_sampleRate:" + m_sampleRate + "\n");
Log.d("MySensor", "time_current_value:" + time_current_value + "\n");
Log.d("MySensor", "time_former_value:" + time_former_value + "\n");
Log.d("MySensor", "currentTimeMillis:" + System.currentTimeMillis() + "\n");
Log.d("MySensor", "period:" + period + "\n");
sample_cnt = 0;
}*/
time_former_value = time_current_value;
// Calculating the acceleration
double acceleration = (Math.sqrt(event.values[0] * event.values[0] + event.values[1] * (event.values[1] + event.values[2] * event.values[2]))) - 9.81;
m_detector.onNewSample(acceleration);
sample_cnt++;
}
@Override
public void onAccuracyChanged(Sensor sensor, int accuracy) {
Log.d("MySensor","onAccuracyChanged()\n");
}
@Override
public double getSampleRate() {
return m_sampleRate;
}
@Override
public void startSampling() {
if (m_sensor != null) {
if (sensorManager.registerListener(this, m_sensor, SensorManager.SENSOR_DELAY_GAME)) {
Log.d("MySensor", "Bei Sensor angemeldet.\n");
} else {
Log.d("MySensor", "Kann dem Sensor keinen Beobachter hinzufügen\n");
}
}
}
@Override
public void stopSampling() {
if (m_sensor != null) {
sensorManager.unregisterListener(this, m_sensor);
Log.d("MySensor","Von Sensor abgemeldet.\n");
}
}
public void connectSensorManager(SensorManager sensorManager){
this.sensorManager = sensorManager;
if (sensorManager.getSensorList(sensorType).size() == 0) {
Log.d("MySensor", "Es gibt den Sensor nicht.\n");
m_sensor = null;
} else {
m_sensor = sensorManager.getSensorList(sensorType).get(0);
}
}
}

26
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/Notifier.java Normal file
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@ -0,0 +1,26 @@
package com.feemers.android.fftdrawer.SignalProcessing;
import android.util.Log;
import java.util.Observable;
public class Notifier extends Observable {
private double[] data;
public Notifier(){
}
public void sendEvent(){
Log.d("Hi", "sendEvent: Test");
}
public void onNewFFTData(double[] data){
this.data = data;
setChanged();
notifyObservers();
}
public double[] getData() {
return data;
}
}

18
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/SensorFake.java Normal file
View File

@ -0,0 +1,18 @@
package com.feemers.android.fftdrawer.SignalProcessing;
public class SensorFake extends SensorImpl {
@Override
public double getSampleRate() {
return 0;
}
@Override
public void startSampling() {
}
@Override
public void stopSampling() {
}
}

19
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/SensorImpl.java Normal file
View File

@ -0,0 +1,19 @@
package com.feemers.android.fftdrawer.SignalProcessing;
public abstract class SensorImpl implements ISensor {
protected IDetector m_detector;
protected double m_sampleRate;
public SensorImpl()
{
m_detector = null;
m_sampleRate = 0;
}
public void connectDetector(IDetector detector){
if(detector == null){
throw new AssertionError("detector == null");
}
m_detector = detector;
}
}

51
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/SignalProcessingControl.java Normal file
View File

@ -0,0 +1,51 @@
package com.feemers.android.fftdrawer.SignalProcessing;
import android.hardware.SensorManager;
import java.util.Observer;
public class SignalProcessingControl {
private IDetector detector;
private ISensor sensor;
private Notifier notifier;
private Logger logger;
public SignalProcessingControl(SensorManager sensorManager, Logger logger) {
this.logger = logger;
logger.log("SignalProcessingControl()");
// create notifier
notifier = new Notifier();
// create detector
//detector = new DetectorTimedomain(20);
detector = new DetectorFFT(20);
detector.setThreshold(6); //TODO: Remove hardcoded threshold and read from GUI instead
detector.connectNotifier(notifier);
// create & link hardware to sensor -> sensorManager
MySensor mySensor = new MySensor();
mySensor.connectSensorManager(sensorManager);
this.sensor = mySensor;
}
public void init() {
logger.log("SignalProcessingControl: init()");
sensor.connectDetector(detector);
}
public void start() {
logger.log("SignalProcessingControl: start()");
sensor.startSampling();
}
public void stop() {
logger.log("SignalProcessingControl: stop()");
sensor.stopSampling();
}
public Notifier getNotifier() {
return notifier;
}
}

67
app/src/main/java/com/feemers/android/fftdrawer/SignalProcessing/ThresholdCalculator.java Normal file
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@ -0,0 +1,67 @@
package com.feemers.android.fftdrawer.SignalProcessing;
class ThresholdCalculator {
private double[] m_buffer;
private int m_windowSize;
private int m_bufferCounter;
private int m_bufferInitCounter;
private double m_constantThresholdPart;
private double m_adaptiveThresholdPart;
public ThresholdCalculator(int windowSize) {
if (windowSize <= 0) {
throw new AssertionError("windowSize should be postive");
}
m_windowSize = windowSize;
reset();
}
public double getThreshold() {
// This method is meant for the use inside of a detector implementation
// Should be called every time a new sensor value is available
// Returns the sum of the constant part of the threshold (determined by the user) and the
// adaptive part of the threshold (determined by the noise level of the signal)
return m_constantThresholdPart + m_adaptiveThresholdPart;
}
public void setConstantThresholdPart(double constantThresholdPart) {
// This method should be called when the User changes the constant part of the threshold with the GUI
this.m_constantThresholdPart = constantThresholdPart;
}
public void onNewSample(double sample) {
// store sample
m_buffer[m_bufferCounter] = sample;
// increase counter
m_bufferCounter++;
// check if we are on the end of Array -> go to start
if (m_bufferCounter >= m_windowSize) {
m_bufferCounter = 0;
}
// when we start the application we will have an arry with emty values
// hence we define how many values are already new
// after N_sample == windowSize this will have no further effect
if (m_bufferInitCounter < m_windowSize) {
m_bufferInitCounter++;
}
// now calculate Mean
double absMean = 0;
for (int i = 0; i < m_bufferInitCounter; i++) {
double sampleVal = m_buffer[i];
absMean += Math.sqrt(sampleVal * sampleVal);
}
m_adaptiveThresholdPart = absMean / m_bufferInitCounter;
}
// for reset this class reset
public void reset() {
m_bufferCounter = 0;
m_bufferInitCounter = 0;
m_buffer = new double[m_windowSize];
for (int i = 0; i < m_windowSize; i++) {
m_buffer[i] = 0;
}
}
}

30
app/src/main/res/drawable-v24/ic_launcher_foreground.xml Normal file
View File

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

170
app/src/main/res/drawable/ic_launcher_background.xml Normal file
View File

@ -0,0 +1,170 @@
<?xml version="1.0" encoding="utf-8"?>
<vector xmlns:android="http://schemas.android.com/apk/res/android"
android:width="108dp"
android:height="108dp"
android:viewportWidth="108"
android:viewportHeight="108">
<path
android:fillColor="#3DDC84"
android:pathData="M0,0h108v108h-108z" />
<path
android:fillColor="#00000000"
android:pathData="M9,0L9,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M19,0L19,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
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android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M39,0L39,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M49,0L49,108"
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android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M59,0L59,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M69,0L69,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M79,0L79,108"
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android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M89,0L89,108"
android:strokeWidth="0.8"
android:strokeColor="#33FFFFFF" />
<path
android:fillColor="#00000000"
android:pathData="M99,0L99,108"
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android:strokeColor="#33FFFFFF" />
<path
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android:pathData="M0,9L108,9"
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<path
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<path
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<path
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<path
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<path
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android:fillColor="#00000000"
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android:strokeColor="#33FFFFFF" />
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32
app/src/main/res/layout/activity_main.xml Normal file
View File

@ -0,0 +1,32 @@
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:mynamespace="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical"
tools:activity=".MainActivity">
<TextView
android:id="@+id/textView1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<com.feemers.android.fftdrawer.BarChartView
android:id="@+id/graficView1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
mynamespace:backgroundColor="#4C614C"/>
<TextView
android:id="@+id/textView2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"/>
<com.feemers.android.fftdrawer.BarChartView
android:id="@+id/graficView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="2"
mynamespace:backgroundColor="#75455E"/>
</LinearLayout>

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

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

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app/src/main/res/values/attributes.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="BarChartView">
<attr name="backgroundColor" format="color"/>
</declare-styleable>
</resources>

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app/src/main/res/values/colors.xml Normal file
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<?xml version="1.0" encoding="utf-8"?>
<resources>
<color name="colorPrimary">#6200EE</color>
<color name="colorPrimaryDark">#3700B3</color>
<color name="colorAccent">#03DAC5</color>
</resources>

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<resources>
<string name="app_name">FFTDrawer</string>
</resources>

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app/src/main/res/values/styles.xml Normal file
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<resources>
<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
<item name="colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="colorAccent">@color/colorAccent</item>
</style>
</resources>

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

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// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.6.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}

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# Project-wide Gradle settings.
# IDE (e.g. Android Studio) users:
# Gradle settings configured through the IDE *will override*
# any settings specified in this file.
# For more details on how to configure your build environment visit
# http://www.gradle.org/docs/current/userguide/build_environment.html
# Specifies the JVM arguments used for the daemon process.
# The setting is particularly useful for tweaking memory settings.
org.gradle.jvmargs=-Xmx1536m
# When configured, Gradle will run in incubating parallel mode.
# This option should only be used with decoupled projects. More details, visit
# http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects
# org.gradle.parallel=true
# AndroidX package structure to make it clearer which packages are bundled with the
# Android operating system, and which are packaged with your app's APK
# https://developer.android.com/topic/libraries/support-library/androidx-rn
android.useAndroidX=true
# Automatically convert third-party libraries to use AndroidX
android.enableJetifier=true

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gradle/wrapper/gradle-wrapper.properties vendored Normal file
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#Mon Jun 08 18:27:45 CEST 2020
distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-5.6.4-all.zip

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gradlew vendored Normal file
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#!/usr/bin/env sh
##############################################################################
##
## Gradle start up script for UN*X
##
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
PRG="$0"
# Need this for relative symlinks.
while [ -h "$PRG" ] ; do
ls=`ls -ld "$PRG"`
link=`expr "$ls" : '.*-> \(.*\)$'`
if expr "$link" : '/.*' > /dev/null; then
PRG="$link"
else
PRG=`dirname "$PRG"`"/$link"
fi
done
SAVED="`pwd`"
cd "`dirname \"$PRG\"`/" >/dev/null
APP_HOME="`pwd -P`"
cd "$SAVED" >/dev/null
APP_NAME="Gradle"
APP_BASE_NAME=`basename "$0"`
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS=""
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD="maximum"
warn () {
echo "$*"
}
die () {
echo
echo "$*"
echo
exit 1
}
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "`uname`" in
CYGWIN* )
cygwin=true
;;
Darwin* )
darwin=true
;;
MINGW* )
msys=true
;;
NONSTOP* )
nonstop=true
;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD="$JAVA_HOME/jre/sh/java"
else
JAVACMD="$JAVA_HOME/bin/java"
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD="java"
which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
# Increase the maximum file descriptors if we can.
if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
MAX_FD_LIMIT=`ulimit -H -n`
if [ $? -eq 0 ] ; then
if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
MAX_FD="$MAX_FD_LIMIT"
fi
ulimit -n $MAX_FD
if [ $? -ne 0 ] ; then
warn "Could not set maximum file descriptor limit: $MAX_FD"
fi
else
warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
fi
fi
# For Darwin, add options to specify how the application appears in the dock
if $darwin; then
GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
fi
# For Cygwin, switch paths to Windows format before running java
if $cygwin ; then
APP_HOME=`cygpath --path --mixed "$APP_HOME"`
CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
JAVACMD=`cygpath --unix "$JAVACMD"`
# We build the pattern for arguments to be converted via cygpath
ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
SEP=""
for dir in $ROOTDIRSRAW ; do
ROOTDIRS="$ROOTDIRS$SEP$dir"
SEP="|"
done
OURCYGPATTERN="(^($ROOTDIRS))"
# Add a user-defined pattern to the cygpath arguments
if [ "$GRADLE_CYGPATTERN" != "" ] ; then
OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
fi
# Now convert the arguments - kludge to limit ourselves to /bin/sh
i=0
for arg in "$@" ; do
CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option
if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition
eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
else
eval `echo args$i`="\"$arg\""
fi
i=$((i+1))
done
case $i in
(0) set -- ;;
(1) set -- "$args0" ;;
(2) set -- "$args0" "$args1" ;;
(3) set -- "$args0" "$args1" "$args2" ;;
(4) set -- "$args0" "$args1" "$args2" "$args3" ;;
(5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
(6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
(7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
(8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
(9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
esac
fi
# Escape application args
save () {
for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
echo " "
}
APP_ARGS=$(save "$@")
# Collect all arguments for the java command, following the shell quoting and substitution rules
eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
# by default we should be in the correct project dir, but when run from Finder on Mac, the cwd is wrong
if [ "$(uname)" = "Darwin" ] && [ "$HOME" = "$PWD" ]; then
cd "$(dirname "$0")"
fi
exec "$JAVACMD" "$@"

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@if "%DEBUG%" == "" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%" == "" set DIRNAME=.
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS=
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if "%ERRORLEVEL%" == "0" goto init
echo.
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto init
echo.
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME%
echo.
echo Please set the JAVA_HOME variable in your environment to match the
echo location of your Java installation.
goto fail
:init
@rem Get command-line arguments, handling Windows variants
if not "%OS%" == "Windows_NT" goto win9xME_args
:win9xME_args
@rem Slurp the command line arguments.
set CMD_LINE_ARGS=
set _SKIP=2
:win9xME_args_slurp
if "x%~1" == "x" goto execute
set CMD_LINE_ARGS=%*
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %CMD_LINE_ARGS%
:end
@rem End local scope for the variables with windows NT shell
if "%ERRORLEVEL%"=="0" goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1
exit /b 1
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

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rootProject.name='FFTDrawer'
include ':app'