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.area.audio;
33
34
35 import javafx.application.Application;
36 import javafx.scene.Parent;
37 import javafx.scene.Scene;
38 import javafx.scene.chart.AreaChart;
39 import javafx.scene.chart.NumberAxis;
40 import javafx.scene.chart.XYChart;
41 import javafx.scene.media.AudioSpectrumListener;
42 import javafx.scene.media.Media;
43 import javafx.scene.media.MediaPlayer;
44 import javafx.stage.Stage;
45
46
47 /**
48 * An area chart that shows audio spectrum of a music file being played.
49 *
50 * @sampleName Audio Area Chart
51 * @preview preview.png
52 * @see javafx.scene.chart.AreaChart
53 * @see javafx.scene.chart.Chart
54 * @see javafx.scene.chart.NumberAxis
55 * @see javafx.scene.chart.XYChart
56 * @see javafx.scene.media.AudioSpectrumListener
57 * @see javafx.scene.media.Media
58 * @see javafx.scene.media.MediaPlayer
59 * @docUrl http://docs.oracle.com/javafx/2/charts/jfxpub-charts.htm Using JavaFX Charts Tutorial
60 * @conditionalFeatures MEDIA
61 */
62 public class AudioAreaChartApp extends Application {
63
64 private XYChart.Data<Number, Number>[] series1Data;
65 private AudioSpectrumListener audioSpectrumListener;
66 private static final String AUDIO_URI = System.getProperty("demo.audio.url",
67 "http://download.oracle.com/otndocs/javafx/JavaRap_Audio.mp4");
68 private MediaPlayer audioMediaPlayer;
69 private static final boolean PLAY_AUDIO = Boolean.parseBoolean(
70 System.getProperty("demo.play.audio", "true"));
71
72 public AudioAreaChartApp() {
73 audioSpectrumListener = (double timestamp, double duration, float[] magnitudes, float[] phases) -> {
74 for (int i = 0; i < series1Data.length; i++) {
75 series1Data[i].setYValue(magnitudes[i] + 60);
76 }
77 };
78 }
79
80 public void play() {
81 startAudio();
82 }
83
84 @Override
85 public void stop() {
86 stopAudio();
87 }
88
89 public Parent createContent() {
90 final NumberAxis xAxis = new NumberAxis(0, 128, 8);
91 final NumberAxis yAxis = new NumberAxis(0, 50, 10);
92 final AreaChart<Number, Number> ac = new AreaChart<>(xAxis, yAxis);
93 // setup chart
94 ac.getStylesheets().add(AudioAreaChartApp.class
95 .getResource("AudioAreaChart.css").toExternalForm());
96 ac.setLegendVisible(false);
97 ac.setTitle("Live Audio Spectrum Data");
98 ac.setAnimated(false);
99 xAxis.setLabel("Frequency Bands");
100 yAxis.setLabel("Magnitudes");
101 yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis, null, "dB"));
102 // add starting data
103 XYChart.Series<Number, Number> series = new XYChart.Series<>();
104 series.setName("Audio Spectrum");
105 //noinspection unchecked
106 series1Data = new XYChart.Data[(int) xAxis.getUpperBound()];
107 for (int i = 0; i < series1Data.length; i++) {
108 series1Data[i] = new XYChart.Data<Number, Number>(i, 50);
109 series.getData().add(series1Data[i]);
110 }
111 ac.getData().add(series);
112 return ac;
113 }
114
115 private void startAudio() {
116 if (PLAY_AUDIO) {
117 getAudioMediaPlayer().
118 setAudioSpectrumListener(audioSpectrumListener);
119 getAudioMediaPlayer().play();
120 }
121 }
122
123 private void stopAudio() {
124 if (getAudioMediaPlayer().getAudioSpectrumListener() == audioSpectrumListener) {
125 getAudioMediaPlayer().pause();
126 }
127 }
128
129 private MediaPlayer getAudioMediaPlayer() {
130 if (audioMediaPlayer == null) {
131 Media audioMedia = new Media(AUDIO_URI);
132 audioMediaPlayer = new MediaPlayer(audioMedia);
133 audioMediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
134 }
135 return audioMediaPlayer;
136 }
137
138 @Override public void start(Stage primaryStage) throws Exception {
139 primaryStage.setScene(new Scene(createContent()));
140 primaryStage.show();
141 play();
142 }
143
144 /**
145 * Java main for when running without JavaFX launcher
146 * @param args command line arguments
147 */
148 public static void main(String[] args) {
149 launch(args);
150 }
151 }