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 */
61 public class AudioAreaChartApp extends Application {
62
63 private XYChart.Data<Number, Number>[] series1Data;
64 private AudioSpectrumListener audioSpectrumListener;
65 private static final String AUDIO_URI = System.getProperty("demo.audio.url",
66 "http://download.oracle.com/otndocs/javafx/JavaRap_Audio.mp4");
67 private MediaPlayer audioMediaPlayer;
68 private static final boolean PLAY_AUDIO = Boolean.parseBoolean(
69 System.getProperty("demo.play.audio", "true"));
70
71 public AudioAreaChartApp() {
72 audioSpectrumListener = (double timestamp, double duration, float[] magnitudes, float[] phases) -> {
73 for (int i = 0; i < series1Data.length; i++) {
74 series1Data[i].setYValue(magnitudes[i] + 60);
75 }
76 };
77 }
78
79 public void play() {
80 startAudio();
81 }
82
83 @Override
84 public void stop() {
85 stopAudio();
86 }
87
88 public Parent createContent() {
89 final NumberAxis xAxis = new NumberAxis(0, 128, 8);
90 final NumberAxis yAxis = new NumberAxis(0, 50, 10);
91 final AreaChart<Number, Number> ac = new AreaChart<>(xAxis, yAxis);
92 // setup chart
93 ac.getStylesheets().add(AudioAreaChartApp.class
94 .getResource("AudioAreaChart.css").toExternalForm());
95 ac.setLegendVisible(false);
96 ac.setTitle("Live Audio Spectrum Data");
97 ac.setAnimated(false);
98 xAxis.setLabel("Frequency Bands");
99 yAxis.setLabel("Magnitudes");
100 yAxis.setTickLabelFormatter(new NumberAxis.DefaultFormatter(yAxis, null, "dB"));
101 // add starting data
102 XYChart.Series<Number, Number> series = new XYChart.Series<>();
103 series.setName("Audio Spectrum");
104 //noinspection unchecked
105 series1Data = new XYChart.Data[(int) xAxis.getUpperBound()];
106 for (int i = 0; i < series1Data.length; i++) {
107 series1Data[i] = new XYChart.Data<Number, Number>(i, 50);
108 series.getData().add(series1Data[i]);
109 }
110 ac.getData().add(series);
111 return ac;
112 }
113
114 private void startAudio() {
115 if (PLAY_AUDIO) {
116 getAudioMediaPlayer().
117 setAudioSpectrumListener(audioSpectrumListener);
118 getAudioMediaPlayer().play();
119 }
120 }
121
122 private void stopAudio() {
123 if (getAudioMediaPlayer().getAudioSpectrumListener() == audioSpectrumListener) {
124 getAudioMediaPlayer().pause();
125 }
126 }
127
128 private MediaPlayer getAudioMediaPlayer() {
129 if (audioMediaPlayer == null) {
130 Media audioMedia = new Media(AUDIO_URI);
131 audioMediaPlayer = new MediaPlayer(audioMedia);
132 audioMediaPlayer.setCycleCount(MediaPlayer.INDEFINITE);
133 }
134 return audioMediaPlayer;
135 }
136
137 @Override public void start(Stage primaryStage) throws Exception {
138 primaryStage.setScene(new Scene(createContent()));
139 primaryStage.show();
140 play();
141 }
142
143 /**
144 * Java main for when running without JavaFX launcher
145 * @param args command line arguments
146 */
147 public static void main(String[] args) {
148 launch(args);
149 }
150 }