/*
 * Copyright  2019 Google LLC
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef ANDROID_FXLAB_SINEWAVE_H
#define ANDROID_FXLAB_SINEWAVE_H

#include "PhaseAccumulator.h"

class SineWave {
public:
    // freq in hz
    SineWave(float frequency, float amplitude, int sampleRate):
        mPhasor(frequency, sampleRate),
        kAmplitude(amplitude) { }

    float operator() () {
        return kAmplitude * sinf(mPhasor.incrementPhase());
    }

private:
    PhaseAccumulator mPhasor;
    const float kAmplitude;
};
#endif //ANDROID_FXLAB_SINEWAVE_H