ArraySoundView.java

/*
  ArraySoundView.java

  (c) 2012-2016 Edward Swartz

  All rights reserved. This program and the accompanying materials
  are made available under the terms of the Eclipse Public License v1.0
  which accompanies this distribution, and is available at
  http://www.eclipse.org/legal/epl-v10.html
 */
package ejs.base.sound;


/**
 * @author ejs
 *
 */
public class ArraySoundView extends BaseSoundView implements IEditableSoundView {

	private float[] data;
	private int offset;

	public ArraySoundView(int start, float[] data, int offset, int length, SoundFormat format) {
		super(start, length, format);
		this.data = data;
		this.offset = offset;
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.sound.BaseSoundView#toString()
	 */
	@Override
	public String toString() {
		return "frames: " + frameCount + " (" + time +" sec), start = " + startFrame*numChannels + " [ " + offset + " + " + sampleCount + "] in " + format;
	}

	/* (non-Javadoc)
	 * @see ejs.base.sound.ISoundView#at(int)
	 */
	@Override
	public float at(int absOffs) {
		return absOffs + offset < 0 || absOffs >= sampleCount || absOffs + offset >= data.length ? 0 
				: data[absOffs + offset];
	}

	/* (non-Javadoc)
	 * @see ejs.base.sound.ISoundView#isSilent()
	 */
	@Override
	public boolean isSilent() {
		return false;
	}

	/* (non-Javadoc)
	 * @see ejs.base.sound.ISoundView#getSoundView(int, int)
	 */
	@Override
	public IEditableSoundView getSoundView(int fromSample, int count) {
		return new ArraySoundView(fromSample, data, fromSample + offset, count, format);
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.sound.BaseSoundView#getSoundViewFrames(int, int)
	 */
	@Override
	public IEditableSoundView getSoundViewFrames(int fromFrame, int count) {
		return (IEditableSoundView) super.getSoundViewFrames(fromFrame, count);
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.sound.BaseSoundView#getSoundViewTime(float, float)
	 */
	@Override
	public IEditableSoundView getSoundViewTime(float fromTime, float length) {
		return (IEditableSoundView) super.getSoundViewTime(fromTime, length);
	}

	/* (non-Javadoc)
	 * @see ejs.base.sound.IEditableSoundView#set(int, float)
	 */
	@Override
	public void set(int sampleOffs, float value) {
		data[sampleOffs + offset] = value;
	}
	
	/* (non-Javadoc)
	 * @see ejs.base.sound.IEditableSoundView#set(int, int, float)
	 */
	@Override
	public void set(int frameOffs, int channel, float value) {
		data[frameOffs * numChannels + channel + offset] = value;		
	}

	/* (non-Javadoc)
	 * @see ejs.base.sound.IEditableSoundView#setFrame(int, float)
	 */
	@Override
	public void setFrame(int frameOffs, float value) {
		for (int i = 0; i < numChannels; i++)
			set(frameOffs * numChannels + i, value);
	}

	/**
	 * @return the data
	 */
	public float[] getData() {
		return data;
	}
	/**
	 * @return the offset
	 */
	public int getOffset() {
		return offset;
	}
}