| 1 | // License: GPL. For details, see LICENSE file.
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| 2 | package org.openstreetmap.josm.io.audio;
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| 3 |
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| 4 | import static org.openstreetmap.josm.tools.I18n.tr;
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| 5 |
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| 6 | import java.awt.GraphicsEnvironment;
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| 7 | import java.io.File;
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| 8 | import java.io.IOException;
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| 9 | import java.net.URL;
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| 10 |
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| 11 | import javax.sound.sampled.AudioFormat;
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| 12 | import javax.sound.sampled.AudioInputStream;
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| 13 | import javax.sound.sampled.AudioSystem;
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| 14 | import javax.sound.sampled.UnsupportedAudioFileException;
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| 15 | import javax.swing.JOptionPane;
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| 16 |
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| 17 | import org.openstreetmap.josm.Main;
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| 18 |
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| 19 | /**
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| 20 | * Utils functions for audio.
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| 21 | *
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| 22 | * @author David Earl <david@frankieandshadow.com>
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| 23 | * @since 12326 (move to new package)
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| 24 | * @since 1462
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| 25 | */
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| 26 | public final class AudioUtil {
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| 27 |
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| 28 | private AudioUtil() {
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| 29 | // Hide default constructor for utils classes
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| 30 | }
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| 31 |
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| 32 | /**
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| 33 | * Returns calibrated length of recording in seconds.
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| 34 | * @param wavFile the recording file (WAV format)
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| 35 | * @return the calibrated length of recording in seconds.
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| 36 | */
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| 37 | public static double getCalibratedDuration(File wavFile) {
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| 38 | try (AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(
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| 39 | new URL("file:".concat(wavFile.getAbsolutePath())))) {
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| 40 | AudioFormat audioFormat = audioInputStream.getFormat();
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| 41 | long filesize = wavFile.length();
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| 42 | double bytesPerSecond = audioFormat.getFrameRate() /* frames per second */
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| 43 | * audioFormat.getFrameSize() /* bytes per frame */;
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| 44 | double naturalLength = filesize / bytesPerSecond;
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| 45 | double calibration = Main.pref.getDouble("audio.calibration", 1.0 /* default, ratio */);
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| 46 | return naturalLength / calibration;
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| 47 | } catch (UnsupportedAudioFileException | IOException e) {
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| 48 | Main.debug(e);
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| 49 | return 0.0;
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| 50 | }
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| 51 | }
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| 52 |
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| 53 | /**
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| 54 | * Shows a popup audio error message for the given exception.
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| 55 | * @param ex The exception used as error reason. Cannot be {@code null}.
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| 56 | * @since 12328
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| 57 | */
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| 58 | public static void audioMalfunction(Exception ex) {
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| 59 | String msg = ex.getMessage();
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| 60 | if (msg == null)
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| 61 | msg = tr("unspecified reason");
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| 62 | else
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| 63 | msg = tr(msg);
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| 64 | Main.error(msg);
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| 65 | if (!GraphicsEnvironment.isHeadless()) {
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| 66 | JOptionPane.showMessageDialog(Main.parent,
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| 67 | "<html><p>" + msg + "</p></html>",
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| 68 | tr("Error playing sound"), JOptionPane.ERROR_MESSAGE);
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| 69 | }
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| 70 | }
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| 71 | }
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