/*
* Created on Mar 20, 2007
*
* Copyright (c) 2006-2007 P.J.Leonard
*
* http://www.frinika.com
*
* This file is part of Frinika.
*
* Frinika is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* Frinika is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Frinika; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.frinika.audio.analysis.gui;
import com.frinika.audio.io.LimitedAudioReader;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.util.Observable;
import com.frinika.audio.analysis.SpectrogramDataListener;
import uk.org.toot.audio.core.AudioBuffer;
//import com.frinika.global.FrinikaConfig;
public class WaveImage extends Observable implements SpectrogramDataListener {
private static final long serialVersionUID = 1L;
int nChannel;
private Image thumbNailImage = null;
private LimitedAudioReader gin = null; // reader for the thumb nail.
private ThumbNailRunnable thumbNailRunnable;
private double frameToScreen;
// static AudioFileFormat.Type targetType = AudioFileFormat.Type.WAVE;
// Rectangle lastRect;
// Rectangle rect;
int height = 100;
Dimension rect;
private float Fs;
public WaveImage(LimitedAudioReader gin) {
this.gin = gin;
Fs=(float) gin.getSampleRate();
// reconstructThumbNail(getBounds());
}
// public void paintComponent(Graphics g) {
// super.paintComponent(g);
//
// if (thumbNailImage == null)
// return;
//
// g.setColor(Color.RED);
// g.fillRect(0, 0, thumbNailImage.getWidth(null), thumbNailImage
// .getHeight(null));
// g.setXORMode(Color.WHITE);
// // g.setColor(Color.RED);
// g.drawImage(thumbNailImage, 0, 0, this);// rect.x, rect.y, null);
// g.setPaintMode();
//
// }
public Dimension getPreferredSize() {
if (rect == null)
return new Dimension(1000, height);
else
return rect;
}
private void reconstructThumbNail(Dimension rect) {
if (thumbNailRunnable == null) {
thumbNailRunnable = new ThumbNailRunnable();
Thread t = new Thread(thumbNailRunnable);
t.setPriority(Thread.MIN_PRIORITY);
thumbNailRunnable.setThread(t);
t.start();
}
thumbNailRunnable.reconstruct(rect);
}
class ThumbNailRunnable implements Runnable {
Thread runThread;
Graphics2D gg;
public void reconstruct(Dimension rect1) {
rect = (Dimension) rect1.clone();
if (runThread.isInterrupted()) {
System.out.println(" Thunmb nail thread already interupted");
return;
}
// System.out.println(" Reconstruct ");
runThread.interrupt();
}
public void setThread(Thread t) {
runThread = t;
}
synchronized boolean buildThumbNail() {
// System.out.println(" buildThumbNail ");
// reconstruct code
if (rect.getWidth() == 0)
return true;
thumbNailImage = new BufferedImage(rect.width, rect.height,
BufferedImage.TYPE_BYTE_BINARY);
gg = (Graphics2D) thumbNailImage.getGraphics();
// int y = rect.height / 2;
// gg.drawString("...", 0, 5);
//
// panel.setDirty();
// panel.repaint();
//
// long x = getStartTick();
// long w = getDuration();
long nSamp = gin.getEnvelopedLengthInFrames();
frameToScreen = rect.width / (double) nSamp;
try {
gin.seekEnvelopeStart(false);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
int nChannel = gin.getFormat().getChannels();
long nFrame = gin.getEnvelopedLengthInFrames();
// ProjectContainer project = lane.getProject();
// double ticksPerSecond = project.getSequence().getResolution()
// * (project.getSequencer().getTempoInBPM() / 60.0);
// double framePerTick = FrinikaConfig.sampleRate / ticksPerSecond;
// double frameToScreen = panel.ticksToScreen / framePerTick;
// int n = nChannel * 2;
int chunkSize = 1024;
// long nBytes = n * nFrame;
// byte byteBuffer[] = new byte[chunkSize]; // 1k chunks ?
int nRead = 0;
float valMax = 0;
float valMin = 0;
double scale = rect.height / 2.0;
gg.setColor(Color.white);
int midY = rect.height / 2;
int pix = 0;
int ii = 0;
AudioBuffer buff = new AudioBuffer("WaveThumbnail", nChannel,
chunkSize, Fs);
System.out
.println(" chunkSize,nFrame =" + chunkSize + " " + nFrame);
while (nRead < nFrame) {
if (runThread.isInterrupted()) {
System.out.println("Interupted .....");
return false;
}
int nn = chunkSize;
buff.makeSilence();
gin.processAudio(buff);
nRead += chunkSize;
float sampleLA[] = buff.getChannel(0);
float sampleRA[];
if (nChannel == 2)
sampleRA = buff.getChannel(1);
else
sampleRA = buff.getChannel(0);
assert (buff.getSampleCount() == chunkSize);
for (int i = 0; i < chunkSize; i++,ii++) {
float sampleL = sampleLA[i];
float sampleR = sampleRA[i];
valMin = Math.min(Math.min(valMin, sampleL), sampleR);
valMax = Math.max(Math.max(valMax, sampleL), sampleR);
int pixNow = (int) (ii * frameToScreen);
if (pixNow > pix) {
gg.drawLine(pix, (int) (midY + valMin * scale), pix,
(int) (midY + valMax * scale));
pix = pixNow;
valMax = valMin = 0;
}
}
}
setChanged();
notifyObservers();
System.out.println(" BUILD DONE" + rect);
return true;
}
public Image getImage() {
return thumbNailImage;
}
synchronized public void run() {
assert (runThread == Thread.currentThread());
while (true) {
try {
wait();
} catch (InterruptedException e1) {
while (!buildThumbNail())
Thread.interrupted(); // clear interrupt flag
}
}
}
}
public void notifySizeChange(Dimension d) {
d.height = height;
reconstructThumbNail(d);
}
public void drawImage(Graphics2D g, int i, int j) {
if (thumbNailImage == null)
return;
g.setColor(Color.RED);
g.fillRect(i, j, thumbNailImage.getWidth(null), thumbNailImage
.getHeight(null));
g.setXORMode(Color.WHITE);
g.drawImage(thumbNailImage, i, j, null);
g.setPaintMode();
}
public int getWidth() {
// TODO Auto-generated method stub
if (rect == null)
return 100;
return rect.width;
}
public int getHeight() {
return height;
}
public int frameToScreen(long frame) {
return (int) (frameToScreen * frame);
}
public int screenToFrame(int p) {
return (int) (p / frameToScreen);
}
public void notifyMoreDataReady() {
// TODO Auto-generated method stub
}
}