core.be.tarsos.dsp.BitDepthProcessor Maven / Gradle / Ivy
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/*
* _______ _____ _____ _____
* |__ __| | __ \ / ____| __ \
* | | __ _ _ __ ___ ___ ___| | | | (___ | |__) |
* | |/ _` | '__/ __|/ _ \/ __| | | |\___ \| ___/
* | | (_| | | \__ \ (_) \__ \ |__| |____) | |
* |_|\__,_|_| |___/\___/|___/_____/|_____/|_|
*
* -------------------------------------------------------------
*
* TarsosDSP is developed by Joren Six at IPEM, University Ghent
*
* -------------------------------------------------------------
*
* Info: http://0110.be/tag/TarsosDSP
* Github: https://github.com/JorenSix/TarsosDSP
* Releases: http://0110.be/releases/TarsosDSP/
*
* TarsosDSP includes modified source code by various authors,
* for credits and info, see README.
*
*/
package be.tarsos.dsp;
/**
* Can be used to show the effect of bit depth modification in real-time.
* It simply transforms every sample to the requested bit depth.
* @author Joren Six
*/
public class BitDepthProcessor implements AudioProcessor {
int bitDepth = 16;
public void setBitDepth(int newBitDepth){
this.bitDepth = newBitDepth;
}
public int getBitDepth(){
return this.bitDepth;
}
@Override
public boolean process(AudioEvent audioEvent) {
float[] buffer = audioEvent.getFloatBuffer();
//For e.g. a bith depth of 3, the factor is
// 2^3 - 1 = 7
float factor = (float) Math.pow(2, bitDepth)/2.0f - 1;
for(int i = 0 ; i < buffer.length ; i++){
//the float is scaled to the bith depth
// e.g. if the bit depth is 3 and the value is 0.3:
// ((int)(0.3 * 7)) / 7 = 0.28
buffer[i]=((int) (buffer[i] * factor))/factor;
}
return true;
}
@Override
public void processingFinished() {
}
}