1 /*
2 * Copyright (c) 2008, 2014, Oracle and/or its affiliates.
3 * All rights reserved. Use is subject to license terms.
4 *
5 * This file is available and licensed under the following license:
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 *
11 * - Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * - Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the distribution.
16 * - Neither the name of Oracle Corporation nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32 package ensemble.samples.charts.bar.audio;
33
34
35 import javafx.application.Application;
36 import javafx.scene.Parent;
37 import javafx.scene.Scene;
38 import javafx.scene.chart.BarChart;
39 import javafx.scene.chart.CategoryAxis;
40 import javafx.scene.chart.NumberAxis;
41 import javafx.scene.chart.XYChart;
42 import javafx.scene.media.AudioSpectrumListener;
43 import javafx.scene.media.Media;
44 import javafx.scene.media.MediaPlayer;
45 import javafx.stage.Stage;
46
47
48 /**
49 * Bar chart that shows audio spectrum of a music file being played.
50 *
51 * @sampleName Audio Bar Chart
52 * @preview preview.png
53 * @see javafx.scene.chart.BarChart
54 * @see javafx.scene.chart.Chart
55 * @see javafx.scene.chart.CategoryAxis
56 * @see javafx.scene.chart.NumberAxis
57 * @see javafx.scene.chart.XYChart
58 * @see javafx.scene.media.AudioSpectrumListener
59 * @see javafx.scene.media.Media
60 * @see javafx.scene.media.MediaPlayer
61 * @conditionalFeatures WEB
62 */
63 public class AudioBarChartApp extends Application {
64
65 private XYChart.Data<String, Number>[] series1Data;
66 private AudioSpectrumListener audioSpectrumListener;
67 private static final String AUDIO_URI = System.getProperty("demo.audio.url",
68 "http://download.oracle.com/otndocs/products/javafx/oow2010-2.flv");
69 private MediaPlayer audioMediaPlayer;
70 private static final boolean PLAY_AUDIO = Boolean.parseBoolean(
71 System.getProperty("demo.play.audio", "true"));
72
73 public AudioBarChartApp() {
74 audioSpectrumListener = (double timestamp, double duration, float[] magnitudes, float[] phases) -> {
75 for (int i = 0; i < series1Data.length; i++) {
76 series1Data[i].setYValue(magnitudes[i] + 60);
77 }
78 };
79 }
80
81 public void play() {
82 this.startAudio();
83 }
84
85 @Override
86 public void stop() {
87 this.stopAudio();
88 }
89
90 public Parent createContent() {
91 final CategoryAxis xAxis = new CategoryAxis();
92 final NumberAxis yAxis = new NumberAxis(0, 50, 10);
93 final BarChart<String, Number> bc = new BarChart<>(xAxis, yAxis);
94 bc.getStylesheets().add(AudioBarChartApp.class.getResource("AudioBarChart.css").toExternalForm());
95 bc.setLegendVisible(false);
96 bc.setAnimated(false);
97 bc.setBarGap(0);
98 bc.setCategoryGap(1);
99 bc.setVerticalGridLinesVisible(false);
100 // setup chart
101 bc.setTitle("Live Audio Spectrum Data");
102 xAxis.setLabel("Frequency Bands");
103 yAxis.setLabel("Magnitudes");
104 yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis, null, "dB"));
105 // add starting data
106 XYChart.Series<String, Number> series1 = new XYChart.Series<>();
107 series1.setName("Data Series 1");
108 //noinspection unchecked
109 series1Data = new XYChart.Data[128];
110 String[] categories = new String[128];
111 for (int i = 0; i < series1Data.length; i++) {
112 categories[i] = Integer.toString(i + 1);
113 series1Data[i] = new XYChart.Data<String, Number>(categories[i], 50);
114 series1.getData().add(series1Data[i]);
115 }
116 bc.getData().add(series1);
117 return bc;
118 }
119
120 private void startAudio() {
121 if (PLAY_AUDIO) {
122 getAudioMediaPlayer()
123 .setAudioSpectrumListener(audioSpectrumListener);
124 getAudioMediaPlayer().play();
125 }
126 }
127
128 private void stopAudio() {
129 if (getAudioMediaPlayer().getAudioSpectrumListener() == audioSpectrumListener) {
130 getAudioMediaPlayer().pause();
131 }
132 }
133
134 private MediaPlayer getAudioMediaPlayer() {
135 if (audioMediaPlayer == null) {
136 Media audioMedia = new Media(AUDIO_URI);
137 audioMediaPlayer = new MediaPlayer(audioMedia);
138 audioMediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
139 }
140 return audioMediaPlayer;
141 }
142
143 @Override
144 public void start(Stage primaryStage) throws Exception {
145 primaryStage.setScene(new Scene(createContent()));
146 primaryStage.show();
147 play();
148 }
149
150 /**
151 * Java main for when running without JavaFX launcher
152 * @param args command line arguments
153 */
154 public static void main(String[] args) {
155 launch(args);
156 }
157 }