| /* |
| * 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 OBOETESTER_INTERPOLATING_DELAY_LINE_H |
| #define OBOETESTER_INTERPOLATING_DELAY_LINE_H |
| |
| #include <memory> |
| #include <unistd.h> |
| #include <sys/types.h> |
| |
| #include "oboe/Oboe.h" |
| #include "FullDuplexStream.h" |
| |
| /** |
| * Monophonic delay line. |
| */ |
| class InterpolatingDelayLine { |
| public: |
| explicit InterpolatingDelayLine(int32_t delaySize); |
| |
| /** |
| * @param input sample to be written to the delay line |
| * @param delay number of samples to delay the output |
| * @return delayed value |
| */ |
| float process(float delay, float input); |
| |
| private: |
| std::unique_ptr<float[]> mDelayLine; |
| int32_t mCursor = 0; |
| int32_t mDelaySize = 0; |
| }; |
| |
| |
| #endif //OBOETESTER_INTERPOLATING_DELAY_LINE_H |