Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package view; import com.sun.media.sound.WaveFileReader; import java.awt.BorderLayout; import java.awt.GridLayout; import java.io.IOException; import java.util.logging.Level; import java.util.logging.Logger; import model.WavFile; import javax.swing.JFileChooser; import javax.swing.filechooser.FileNameExtensionFilter; import model.WavFileException; import org.jfree.chart.ChartFactory; import org.jfree.chart.ChartPanel; import org.jfree.chart.JFreeChart; import org.jfree.chart.plot.PlotOrientation; import org.jfree.chart.renderer.category.ScatterRenderer; import org.jfree.data.xy.XYSeries; import org.jfree.data.xy.XYSeriesCollection; import org.jtransforms.dct.DoubleDCT_1D; import org.jtransforms.utils.CommonUtils; /** * * @author carlosmagno */ public class MainFrame extends javax.swing.JFrame { private double[] samples; WavFile wavFile; /** * Creates new form MainFrame */ public MainFrame() { initComponents(); } /** * This method is called from within the constructor to initialize the form. * WARNING: Do NOT modify this code. The content of this method is always * regenerated by the Form Editor. */ @SuppressWarnings("unchecked") // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents private void initComponents() { mainPanel = new javax.swing.JPanel(); jScrollPane1 = new javax.swing.JScrollPane(); textArea = new javax.swing.JTextArea(); graphPanel = new javax.swing.JPanel(); menuBar = new javax.swing.JMenuBar(); jMenu1 = new javax.swing.JMenu(); menuItemOpen = new javax.swing.JMenuItem(); menuItemQuit = new javax.swing.JMenuItem(); menuTransform = new javax.swing.JMenu(); menuItemDCT = new javax.swing.JMenuItem(); setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); textArea.setEditable(false); textArea.setColumns(20); textArea.setRows(5); jScrollPane1.setViewportView(textArea); javax.swing.GroupLayout graphPanelLayout = new javax.swing.GroupLayout(graphPanel); graphPanel.setLayout(graphPanelLayout); graphPanelLayout.setHorizontalGroup(graphPanelLayout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 0, Short.MAX_VALUE)); graphPanelLayout.setVerticalGroup(graphPanelLayout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING).addGap(0, 201, Short.MAX_VALUE)); javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel); mainPanel.setLayout(mainPanelLayout); mainPanelLayout.setHorizontalGroup(mainPanelLayout .createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, mainPanelLayout.createSequentialGroup() .addContainerGap() .addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING) .addComponent(graphPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)) .addContainerGap())); mainPanelLayout .setVerticalGroup( mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(mainPanelLayout.createSequentialGroup().addContainerGap() .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 150, javax.swing.GroupLayout.PREFERRED_SIZE) .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED) .addComponent(graphPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE) .addContainerGap())); jMenu1.setText("File"); menuItemOpen.setText("Open"); menuItemOpen.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { menuItemOpenActionPerformed(evt); } }); jMenu1.add(menuItemOpen); menuItemQuit.setText("Quit"); menuItemQuit.addMouseListener(new java.awt.event.MouseAdapter() { public void mouseClicked(java.awt.event.MouseEvent evt) { menuItemQuitMouseClicked(evt); } }); menuItemQuit.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { menuItemQuitActionPerformed(evt); } }); jMenu1.add(menuItemQuit); menuBar.add(jMenu1); menuTransform.setText("Transform"); menuItemDCT.setText("DCT"); menuItemDCT.addActionListener(new java.awt.event.ActionListener() { public void actionPerformed(java.awt.event.ActionEvent evt) { menuItemDCTActionPerformed(evt); } }); menuTransform.add(menuItemDCT); menuBar.add(menuTransform); setJMenuBar(menuBar); javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane()); getContentPane().setLayout(layout); layout.setHorizontalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addComponent(mainPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)); layout.setVerticalGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING) .addGroup(layout.createSequentialGroup() .addComponent(mainPanel, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE) .addGap(0, 0, Short.MAX_VALUE))); pack(); }// </editor-fold>//GEN-END:initComponents private void menuItemOpenActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuItemOpenActionPerformed // TODO add your handling code here: JFileChooser filech = new JFileChooser(); filech.setFileSelectionMode(JFileChooser.FILES_ONLY); filech.setFileFilter(new FileNameExtensionFilter("WAV Files", "wav")); int ret = filech.showOpenDialog(this); if (ret == JFileChooser.APPROVE_OPTION) { try { wavFile = WavFile.openWavFile(filech.getSelectedFile()); textArea.append(wavFile.getInfoString()); samples = new double[wavFile.getNumChannels() * (int) wavFile.getSampleRate()]; int nFrames = wavFile.readFrames(samples, (int) wavFile.getSampleRate()); textArea.append(nFrames + " frames lidos.\n"); double valuesX[] = new double[samples.length]; for (int i = 0; i < samples.length; i++) { valuesX[i] = i; } showChart(wavFile.getNumChannels() * (int) wavFile.getSampleRate(), samples, valuesX, "Amostra", "Amplitude", "Amplitude das Amostras do ?udio", "Audio"); } catch (IOException ex) { Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex); } catch (WavFileException ex) { Logger.getLogger(MainFrame.class.getName()).log(Level.SEVERE, null, ex); } } }//GEN-LAST:event_menuItemOpenActionPerformed private void menuItemQuitMouseClicked(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_menuItemQuitMouseClicked // TODO add your handling code here: }//GEN-LAST:event_menuItemQuitMouseClicked private void menuItemQuitActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuItemQuitActionPerformed // TODO add your handling code here: System.exit(0); }//GEN-LAST:event_menuItemQuitActionPerformed private void menuItemDCTActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_menuItemDCTActionPerformed // TODO add your handling code here: if (samples == null) return; int N = samples.length; double f1 = (double) wavFile.getSampleRate() / (2 * (N - 1)); double[] valuesX = new double[samples.length]; for (int i = 0; i < samples.length; i++) { valuesX[i] = i * f1; } DoubleDCT_1D dtc_calculator = new DoubleDCT_1D(N); dtc_calculator.forward(samples, true); showChart(N, samples, valuesX, "Hz", "Amplitude", "DCT", "DCT"); }//GEN-LAST:event_menuItemDCTActionPerformed public void showChart(int N, double[] valuesY, double[] valuesX, String axisX, String axisY, String graphName, String dataName) { graphPanel.removeAll(); String serieName = dataName; String tittle = graphName; String xAxisName = axisX; String yAxisName = axisY; XYSeries dataSerie = new XYSeries(serieName); for (int i = 0; i < N; i++) { dataSerie.add(valuesX[i], valuesY[i]); } XYSeriesCollection sCollection = new XYSeriesCollection(); sCollection.addSeries(dataSerie); //JFreeChart jfreechart = ChartFactory.createScatterPlot(tittle, xAxisName, yAxisName, sCollection); JFreeChart jfreechart = ChartFactory.createHistogram(tittle, xAxisName, yAxisName, sCollection, PlotOrientation.VERTICAL, true, true, false); ChartPanel panel = new ChartPanel(jfreechart); panel.setVisible(true); graphPanel.add(panel); graphPanel.setLayout(new GridLayout(1, 0)); graphPanel.validate(); graphPanel.setVisible(true); } /** * @param args the command line arguments */ public static void main(String args[]) { /* Set the Nimbus look and feel */ //<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) "> /* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel. * For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html */ try { for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) { if ("Nimbus".equals(info.getName())) { javax.swing.UIManager.setLookAndFeel(info.getClassName()); break; } } } catch (ClassNotFoundException ex) { java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (InstantiationException ex) { java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (IllegalAccessException ex) { java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } catch (javax.swing.UnsupportedLookAndFeelException ex) { java.util.logging.Logger.getLogger(MainFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex); } //</editor-fold> /* Create and display the form */ java.awt.EventQueue.invokeLater(new Runnable() { public void run() { new MainFrame().setVisible(true); } }); } // Variables declaration - do not modify//GEN-BEGIN:variables private javax.swing.JPanel graphPanel; private javax.swing.JMenu jMenu1; private javax.swing.JScrollPane jScrollPane1; private javax.swing.JPanel mainPanel; private javax.swing.JMenuBar menuBar; private javax.swing.JMenuItem menuItemDCT; private javax.swing.JMenuItem menuItemOpen; private javax.swing.JMenuItem menuItemQuit; private javax.swing.JMenu menuTransform; private javax.swing.JTextArea textArea; // End of variables declaration//GEN-END:variables }