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| /*
* This file is part of Plants-Growth-2
* Plants-Growth-2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Plants-Growth-2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Plants-Growth-2. If not, see <http://www.gnu.org/licenses/>.
*/
package be.manudahmen.mylittlesynth;
import javafx.animation.AnimationTimer;
import javafx.scene.canvas.Canvas;
import javafx.scene.canvas.GraphicsContext;
import javafx.scene.paint.Color;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.Map;
import java.util.NoSuchElementException;
public class AudioViewer extends Thread {
int numberOfSamplesPerPixel = 1;
private final LinkedList<Double> doubles = new LinkedList<>();
private LinkedList<Double> getDoubles() {
return doubles;
}
private void addDouble(Double value) {
this.doubles.add(value);
}
private final int channels;
private final float sampleRate;
private final Canvas canvas;
private double[] oldValues;
private double min = 0;
private double max = Short.MAX_VALUE;
private double position;
private final LinkedList<Double> values;
private boolean running;
public AudioViewer(float sampleRate, int channels, Canvas canvas) {
this.sampleRate = sampleRate;
this.channels = channels;
this.canvas = canvas;
oldValues = new double[channels];
running = true;
values = new LinkedList<>();
new CanvasRedrawTask().start();
}
void render(long timeElapsed, int numberOfSamples) {
GraphicsContext context2D = canvas.getGraphicsContext2D();
int maxWidth = (int) canvas.getWidth();
drawBorder(canvas.getGraphicsContext2D(), Color.RED);
Enveloppe enveloppe = new Enveloppe(1);
final double[] yPoints = new double[enveloppe.points.length];
final double[] xPoints = new double[enveloppe.points.length];
final double[] xPoints2 = new double[maxWidth];
final double[] yPoints2 = new double[maxWidth];
final double maxHeight = canvas.getHeight() / 2;
//System.out.println("maxHeight:" + maxHeight);
for (int i = 0; i < enveloppe.points.length; i++) {
double y = enveloppe.points[i].getY() * maxHeight;
double z = enveloppe.points[i].getZ() * canvas.getWidth();
xPoints[i] = z;
yPoints[i] = -y + maxHeight;
}
for (int i = 0; i < xPoints2.length; i++) {
double v = enveloppe.getForm(1.0 * i / maxWidth);
xPoints2[i] = i;
yPoints2[i] = -v * maxHeight + maxHeight;
}
LinkedList<Double> doubles2 = getDoubles();
if (doubles2.size() >= channels) {
//System.out.println("DOUBLES:" + doubles2.getFirst());
int size = (int) Math.min(canvas.getWidth() * 2, doubles2.size() / numberOfSamplesPerPixel);
final double[] samples = new double[size];
int total = 0;
do {
int i = 0;
try {
while ((doubles2.size() > 0) && (doubles2.getFirst() != null) && (i < size)) {
samples[i++] = doubles2.getFirst();
doubles2.removeFirst();
total++;
}
} catch (NoSuchElementException ex) {
}
} while ((sampleSpeed(timeElapsed, numberOfSamples) > treatmentSpeed(timeElapsed, total)));
final double[] xpoints;
final double[] xs = new double[size / 2];
final double[] ys1 = new double[size / 2];
final double[] ys2 = new double[size / 2];
xpoints = new double[size / 2];
for (int i = 0; i < size; ) {
xs[i / 2] = position++;
xpoints[i / 2] = xs[i / 2];
int k = 0;
ys1[i / 2] = 0;
ys2[i / 2] = 0;
while (k < numberOfSamplesPerPixel * 2) {
ys1[i / 2] += samples[i / 2 + k++] * maxHeight / max + maxHeight;
ys2[i / 2] += samples[i / 2 + k++] * maxHeight / max + maxHeight;
if (position >= canvas.getWidth()) {
position = 0;
}
}
ys1[i / 2] /= numberOfSamplesPerPixel;
ys2[i / 2] /= numberOfSamplesPerPixel;
i += 2;
}
context2D.clearRect(0, 0, canvas.getWidth(), canvas.getHeight());
context2D.strokePolyline(xPoints, yPoints, xPoints.length);
context2D.strokePolyline(xPoints2, yPoints2, xPoints2.length);
context2D.setFill(Color.BLACK);
context2D.setStroke(Color.BLUE);
context2D.setLineWidth(4.0);
context2D.strokePolyline(xpoints, ys1, size / 2);
context2D.strokePolyline(xpoints, ys2, size / 2);
try {
Thread.sleep(200);
} catch (InterruptedException e) {
e.printStackTrace();
}
//System.out.println("Points: " + size / 2 + "(" + xpoints[0] + ", " + ys1[0] + ")");
}
}
private double treatmentSpeed(long time, int sample) {
return 1.0 * sample / time;
}
private double sampleSpeed(long time, int sample) {
return 1.0 * sample / time;
}
private void drawBorder(GraphicsContext g, Color selectedColor) {
final double canvasWidth = g.getCanvas().getWidth();
final double canvasHeight = g.getCanvas().getHeight();
g.setStroke(selectedColor);
g.setLineWidth(4);
g.strokeRect(0, 0, canvasWidth, canvasHeight);
//sets the color back to the currently selected ColorPicker color
}
public void sendDouble(Double value) {
addDouble(value);
}
public boolean isRunning() {
return running;
}
public void setRunning(boolean running) {
this.running = running;
}
class CanvasRedrawTask extends AnimationTimer {
long time = System.nanoTime();
long f = System.nanoTime();
@Override
public void handle(long now) {
render(f, getDoubles().size() / 2);
f = (System.nanoTime() - time) / 1000 / 1000;
System.out.println("Time since last redraw " + f + " ms");
time = System.nanoTime();
}
}
} |
