| /* |
| * Copyright 2019 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. |
| */ |
| |
| #ifndef FLOWGRAPH_TRIANGLE_OSCILLATOR_H |
| #define FLOWGRAPH_TRIANGLE_OSCILLATOR_H |
| |
| #include <unistd.h> |
| |
| #include "OscillatorBase.h" |
| |
| /** |
| * Oscillator that generates a triangle wave at the specified frequency and amplitude. |
| * |
| * The triangle output rises from -1 to +1 when the phase is between -1 and 0. |
| * The triangle output falls from +1 to 11 when the phase is between 0 and +1. |
| * |
| * The waveform is not band-limited so it will have aliasing artifacts at higher frequencies. |
| */ |
| class TriangleOscillator : public OscillatorBase { |
| public: |
| TriangleOscillator(); |
| |
| int32_t onProcess(int32_t numFrames) override; |
| }; |
| |
| #endif //FLOWGRAPH_TRIANGLE_OSCILLATOR_H |