1 /* 2 * Copyright 2019 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #ifndef OBOETESTER_FULL_DUPLEX_ECHO_H 18 #define OBOETESTER_FULL_DUPLEX_ECHO_H 19 20 #include <unistd.h> 21 #include <sys/types.h> 22 23 #include "oboe/Oboe.h" 24 #include "analyzer/LatencyAnalyzer.h" 25 #include "FullDuplexStreamWithConversion.h" 26 #include "InterpolatingDelayLine.h" 27 28 class FullDuplexEcho : public FullDuplexStreamWithConversion { 29 public: FullDuplexEcho()30 FullDuplexEcho() { 31 setNumInputBurstsCushion(0); 32 } 33 34 /** 35 * Called when data is available on both streams. 36 * Caller should override this method. 37 */ 38 oboe::DataCallbackResult onBothStreamsReadyFloat( 39 const float *inputData, 40 int numInputFrames, 41 float *outputData, 42 int numOutputFrames 43 ) override; 44 45 oboe::Result start() override; 46 47 double getPeakLevel(int index); 48 setDelayTime(double delayTimeSeconds)49 void setDelayTime(double delayTimeSeconds) { 50 mDelayTimeSeconds = delayTimeSeconds; 51 } 52 53 private: 54 std::unique_ptr<InterpolatingDelayLine> mDelayLine; 55 static constexpr double kMaxDelayTimeSeconds = 4.0; 56 double mDelayTimeSeconds = kMaxDelayTimeSeconds; 57 std::atomic<int32_t> mNumChannels{0}; 58 std::unique_ptr<PeakDetector[]> mPeakDetectors; 59 60 }; 61 62 63 #endif //OBOETESTER_FULL_DUPLEX_ECHO_H 64