| /* |
| * Copyright (C) 2015 The Android Open Source Project |
| * |
| * 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 |
| * |
| * http://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. |
| */ |
| |
| package org.drrickorang.loopback; |
| |
| |
| /** |
| * This class generates a mix of two sine waves with frequency1, frequency2, and samplingRate. |
| * It keeps two member variable "mPhase1" and "mPhase2", so as it continually be called, |
| * it will continue to generate the next section of the sine wave. |
| */ |
| |
| /* |
| public class TwoSineWavesTone extends ToneGeneration { |
| private int mCount; // counts the total samples produced. |
| private double mPhase1; // current phase associated with mFrequency1 |
| private double mPhase2; // current phase associated with mFrequency2 |
| private final double mPhaseIncrement1; // phase incrementation associated with mFrequency1 |
| private final double mPhaseIncrement2; // phase incrementation associated with mFrequency2 |
| */ |
| |
| |
| /** |
| * Currently, this class is never used, but it can be used in the future to create a different |
| * kind of wave when running the test. |
| */ |
| /* |
| public TwoSineWavesTone(int samplingRate, double frequency1, double frequency2) { |
| super(samplingRate); |
| mCount = 0; |
| mPhaseIncrement1 = Constant.TWO_PI * (frequency1 / mSamplingRate); // should < 2pi |
| mPhaseIncrement2 = Constant.TWO_PI * (frequency2 / mSamplingRate); // should < 2pi |
| mAmplitude = Constant.TWO_SINE_WAVES_AMPLITUDE; |
| } |
| |
| |
| @Override |
| public void generateTone(short[] tone, int size) { |
| for (int i = 0; i < size; i++) { |
| short value1 = (short) (mAmplitude * Math.sin(mPhase1) * Short.MAX_VALUE); |
| short value2 = (short) (mAmplitude * Math.sin(mPhase2) * Short.MAX_VALUE); |
| tone[i] = (short) (value1 + value2); |
| |
| mPhase1 += mPhaseIncrement1; |
| mPhase2 += mPhaseIncrement2; |
| |
| // insert glitches for every second if mIsGlitchEnabled == true. |
| if (mIsGlitchEnabled && (mCount % mSamplingRate == 0)) { |
| mPhase1 += mPhaseIncrement1; |
| mPhase2 += mPhaseIncrement2; |
| } |
| |
| mCount++; |
| |
| if (mPhase1 > Constant.TWO_PI) { |
| mPhase1 -= Constant.TWO_PI; |
| } |
| if (mPhase2 > Constant.TWO_PI) { |
| mPhase2 -= Constant.TWO_PI; |
| } |
| |
| } |
| } |
| |
| |
| @Override |
| public void generateTone(double[] tone, int size) { |
| for (int i = 0; i < size; i++) { |
| double value1 = mAmplitude * Math.sin(mPhase1); |
| double value2 = mAmplitude * Math.sin(mPhase2); |
| tone[i] = value1 + value2; |
| |
| mPhase1 += mPhaseIncrement1; |
| mPhase2 += mPhaseIncrement2; |
| // insert glitches if mIsGlitchEnabled == true, and insert it for every second |
| if (mIsGlitchEnabled && (mCount % mSamplingRate == 0)) { |
| mPhase1 += mPhaseIncrement1; |
| mPhase2 += mPhaseIncrement2; |
| } |
| |
| mCount++; |
| |
| if (mPhase1 > Constant.TWO_PI) { |
| mPhase1 -= Constant.TWO_PI; |
| } |
| if (mPhase2 > Constant.TWO_PI) { |
| mPhase2 -= Constant.TWO_PI; |
| } |
| |
| } |
| } |
| |
| |
| @Override |
| public void resetPhases() { |
| mPhase1 = 0; |
| mPhase2 = 0; |
| } |
| } |
| */ |