feat: declared different constructor of PeriodicWave

packages/react-native-audio-api/common/cpp/core/PeriodicWave.cpp

@@ -1 +1,74 @@
+/*
+ * Copyright (C) 2012 Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1.  Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ * 2.  Redistributions in binary form must reproduce the above copyright
+ *     notice, this list of conditions and the following disclaimer in the
+ *     documentation and/or other materials provided with the distribution.
+ * 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+ *     its contributors may be used to endorse or promote products derived
+ *     from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
 #include "PeriodicWave.h"
+
+// The number of bands per octave. Each octave will have this many entries in the wave tables.
+constexpr unsigned NumberOfOctaveBands = 3;
+
+constexpr float CentsPerRange = 1200.0f / NumberOfOctaveBands;
+
+namespace audioapi {
+    PeriodicWave::PeriodicWave(int sampleRate): sampleRate_(sampleRate) {
+        numberOfRanges_ = lround(NumberOfOctaveBands * log2f(static_cast<float>(getPeriodicWaveSize())));
+        auto nyquistFrequency = sampleRate_ / 2;
+        lowestFundamentalFrequency_ = static_cast<float>(nyquistFrequency) / static_cast<float>(getMaxNumberOfPartials());
+        rateScale_ = static_cast<float>(getPeriodicWaveSize()) / static_cast<float>(sampleRate_);
+        waveTable_ = new float[getPeriodicWaveSize()];
+    }
+
+    PeriodicWave::PeriodicWave(int sampleRate, audioapi::OscillatorType type): PeriodicWave(sampleRate) {
+        //get waveTable for type
+    }
+
+    PeriodicWave::PeriodicWave(int sampleRate, float *real, float *imaginary): PeriodicWave(sampleRate) {
+        //get waveTable for real and imaginary
+    }
+
+    int PeriodicWave::getPeriodicWaveSize() const {
+        if(sampleRate_ <= 24000) {
+            return 2048;
+        }
+
+        if(sampleRate_ <= 88200) {
+            return 4096;
+        }
+
+        return 16384;
+    }
+
+    void PeriodicWave::generateBasicWaveForm(OscillatorType type) {
+        auto n = getPeriodicWaveSize();
+
+
+    }
+
+    int PeriodicWave::getMaxNumberOfPartials() const {
+        return getPeriodicWaveSize() / 2;
+    }
+}

packages/react-native-audio-api/common/cpp/core/PeriodicWave.h

@@ -1,18 +1,64 @@
+/*
+* Copyright (C) 2012 Google Inc. All rights reserved.
+*
+* Redistribution and use in source and binary forms, with or without
+* modification, are permitted provided that the following conditions
+* are met:
+*
+* 1.  Redistributions of source code must retain the above copyright
+*     notice, this list of conditions and the following disclaimer.
+* 2.  Redistributions in binary form must reproduce the above copyright
+*     notice, this list of conditions and the following disclaimer in the
+*     documentation and/or other materials provided with the distribution.
+* 3.  Neither the name of Apple Inc. ("Apple") nor the names of
+*     its contributors may be used to endorse or promote products derived
+*     from this software without specific prior written permission.
+*
+* THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
+* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+* DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
+* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+*/
+
 #pragma once
 
+#include <cmath>
+#include <memory>
+
+#include "OscillatorType.h"
+
 namespace audioapi {
     class PeriodicWave {
+    public:
+        explicit PeriodicWave(int sampleRate, OscillatorType type);
+        explicit PeriodicWave(int sampleRate, float *real, float *imaginary);
+
+        int getPeriodicWaveSize() const;
 
     private:
-        explicit PeriodicWave(unsigned sampleRate);
+        explicit PeriodicWave(int sampleRate);
+
+        int getMaxNumberOfPartials() const;
+
+        void generateBasicWaveForm(OscillatorType type);
 
         // determines the time resolution of the waveform.
-        unsigned sampleRate_;
+        int sampleRate_;
         // determines number of frequency segments (or bands) the signal is divided.
-        unsigned numberOfRanges_;
+        int numberOfRanges_;
         // the lowest frequency (in hertz) where playback will include all of the partials.
-        float lowestFundamentalFrequency;
+        float lowestFundamentalFrequency_;
         // scaling factor used to adjust size of period of waveform to the sample rate.
         float rateScale_;
+
+        float *waveTable_;
+        //float **bandLimitedTables_;
+
     };
 } // namespace audioapi