teensy-audio/effect_combine.h

/* Copyright (c) 2018 John-Michael Reed
 * bleeplabs.com
 *
 * Development of this audio library was funded by PJRC.COM, LLC by sales of
 * Teensy and Audio Adaptor boards.  Please support PJRC's efforts to develop
 * open source software by purchasing Teensy or other PJRC products.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice, development funding notice, and this permission
 * notice shall be included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 *
 * Combine analog signals with bitwise expressions like XOR.
 * Combining two simple oscillators results in interesting new waveforms,
 * Combining white noise or dynamic incoming audio results in aggressive digital distortion.
 */

#ifndef effect_digital_combine_h_
#define effect_digital_combine_h_
#include <Arduino.h>
#include "AudioStream.h"

class AudioEffectDigitalCombine : public AudioStream
{
public:
	enum combineMode {
		OR    = 0,
		XOR   = 1,
		AND   = 2,
		MODULO = 3,
	};
	AudioEffectDigitalCombine() : AudioStream(2, inputQueueArray), mode_sel(OR) { }
	void setCombineMode(int mode_in) {
		if (mode_in > 3) {
	  		mode_in = 3;
	  	}
	  	mode_sel = mode_in;
	}
	virtual void update(void);
private:
	short mode_sel;
	audio_block_t *inputQueueArray[2];
};

#endif