/*
  Copyright (c) 2021 Alex Diener
  
  This software is provided 'as-is', without any express or implied
  warranty. In no event will the authors be held liable for any damages
  arising from the use of this software.
  
  Permission is granted to anyone to use this software for any purpose,
  including commercial applications, and to alter it and redistribute it
  freely, subject to the following restrictions:
  
  1. The origin of this software must not be misrepresented; you must not
     claim that you wrote the original software. If you use this software
     in a product, an acknowledgment in the product documentation would be
     appreciated but is not required.
  2. Altered source versions must be plainly marked as such, and must not be
     misrepresented as being the original software.
  3. This notice may not be removed or altered from any source distribution.
  
  Alex Diener alex@ludobloom.com
*/

#ifndef __FrequencyCurve_stairstep_H__
#define __FrequencyCurve_stairstep_H__
#ifdef __cplusplus
extern "C" {
#endif

typedef struct FrequencyCurve_stairstep FrequencyCurve_stairstep;
#define FrequencyCurve_stairstep_superclass FrequencyCurve

#include "audiosynth/FrequencyCurve.h"
#include <stdint.h>

#define STAIRSTEP_REPEAT_INFINITE UINT16_MAX

struct FrequencyCurve_stairstep_step {
	float duration;
	float change;
};

#define FrequencyCurve_stairstep_ivars \
	FrequencyCurve_ivars \
	\
	unsigned int stepCount; \
	struct FrequencyCurve_stairstep_step * steps; \
	unsigned int repeatStartIndex; \
	unsigned int repeatCount;

#define FrequencyCurve_stairstep_vtable(self_type) \
	FrequencyCurve_vtable(self_type)

stemobject_declare(FrequencyCurve_stairstep)

// Does not take ownership of steps
FrequencyCurve_stairstep * FrequencyCurve_stairstep_create(float baseValue, unsigned int stepCount, struct FrequencyCurve_stairstep_step * steps, unsigned int repeatStartIndex, unsigned int repeatCount);
bool FrequencyCurve_stairstep_init(FrequencyCurve_stairstep * self, float baseValue, unsigned int stepCount, struct FrequencyCurve_stairstep_step * steps, unsigned int repeatStartIndex, unsigned int repeatCount);
void FrequencyCurve_stairstep_dispose(FrequencyCurve_stairstep * self);

FrequencyCurve_stairstep * FrequencyCurve_stairstep_copy(FrequencyCurve_stairstep * self);
bool FrequencyCurve_stairstep_isEqual(FrequencyCurve_stairstep * self, compat_type(FrequencyCurve_stairstep *) compare);
uint32_t FrequencyCurve_stairstep_hash(FrequencyCurve_stairstep * self, uint32_t initval);
void FrequencyCurve_stairstep_initCopy(FrequencyCurve_stairstep * self, FrequencyCurve_stairstep * original);
SamplerObject_state * FrequencyCurve_stairstep_initState(FrequencyCurve_stairstep * self);
void FrequencyCurve_stairstep_disposeState(FrequencyCurve_stairstep * self, SamplerObject_state * state);
float FrequencyCurve_stairstep_getLength(FrequencyCurve_stairstep * self);
unsigned int FrequencyCurve_stairstep_getPropertyCount(FrequencyCurve_stairstep * self);
SynthProperty FrequencyCurve_stairstep_getPropertyAtIndex(FrequencyCurve_stairstep * self, unsigned int index);
float FrequencyCurve_stairstep_getPropertyValueStateless(FrequencyCurve_stairstep * self, SynthPropertyIdentifier propertyIdentifier);
void FrequencyCurve_stairstep_setPropertyValue(FrequencyCurve_stairstep * self, SamplerObject_state * state, SynthPropertyIdentifier propertyIdentifier, float value);
float FrequencyCurve_stairstep_sample(FrequencyCurve_stairstep * self, SamplerObject_state * state, float phase, float phaseDelta, float time, float timeDelta);

#ifdef __cplusplus
}
#endif
#endif