andrewm@0: /*
andrewm@0:  * Utilities.h
andrewm@0:  *
andrewm@0:  *  Created on: Oct 27, 2014
andrewm@0:  *      Author: parallels
andrewm@0:  */
andrewm@0: 
andrewm@0: #ifndef UTILITIES_H_
andrewm@0: #define UTILITIES_H_
andrewm@0: 
andrewm@13: extern int gNumAudioChannels;	// How many audio channels are present
andrewm@13: extern int gNumMatrixChannels;	// How many matrix channels are present
andrewm@13: 
andrewm@5: // Macros for accessing the matrix values: usable _only_ within render()
andrewm@5: 
andrewm@5: // Read an analog input from input pin p at frame f
andrewm@13: #define analogRead(p, f) (matrixIn[(f)*gNumMatrixChannels + (p)])
andrewm@5: // Write an analog output frame at output pin p, frame f, to value v
andrewm@13: #define analogWrite(p, f, v) (matrixOut[(f)*gNumMatrixChannels + (p)] = (uint16_t)(v))
andrewm@5: 
andrewm@0: float map(float x, float in_min, float in_max, float out_min, float out_max);
andrewm@0: float constrain(float x, float min_val, float max_val);
andrewm@0: 
andrewm@0: #endif /* UTILITIES_H_ */