1 /* 2 * Copyright 2020 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 CTS_NATIVE_AUDIO_ANALYZER_H 18 #define CTS_NATIVE_AUDIO_ANALYZER_H 19 20 #define LOG_TAG "NativeAudioAnalyzer" 21 #include <android/log.h> 22 23 #ifndef MODULE_NAME 24 #define MODULE_NAME "NativeAudioAnalyzer" 25 #endif 26 27 #define ALOGV(...) __android_log_print(ANDROID_LOG_VERBOSE, MODULE_NAME, __VA_ARGS__) 28 #define ALOGD(...) __android_log_print(ANDROID_LOG_DEBUG, MODULE_NAME, __VA_ARGS__) 29 #define ALOGI(...) __android_log_print(ANDROID_LOG_INFO, MODULE_NAME, __VA_ARGS__) 30 #define ALOGW(...) __android_log_print(ANDROID_LOG_WARN, MODULE_NAME, __VA_ARGS__) 31 #define ALOGE(...) __android_log_print(ANDROID_LOG_ERROR, MODULE_NAME, __VA_ARGS__) 32 #define ALOGF(...) __android_log_print(ANDROID_LOG_FATAL, MODULE_NAME, __VA_ARGS__) 33 34 #include <aaudio/AAudio.h> 35 36 #include "analyzer/GlitchAnalyzer.h" 37 #include "analyzer/LatencyAnalyzer.h" 38 39 class NativeAudioAnalyzer { 40 public: 41 42 /** 43 * Open the audio input and output streams. 44 * @return AAUDIO_OK or negative error 45 */ 46 aaudio_result_t openAudio(); 47 48 /** 49 * Start the audio input and output streams. 50 * @return AAUDIO_OK or negative error 51 */ 52 aaudio_result_t startAudio(); 53 54 /** 55 * Stop the audio input and output streams. 56 * @return AAUDIO_OK or negative error 57 */ 58 aaudio_result_t stopAudio(); 59 60 /** 61 * Close the audio input and output streams. 62 * @return AAUDIO_OK or negative error 63 */ 64 aaudio_result_t closeAudio(); 65 66 /** 67 * @return true if enough audio input has been recorded 68 */ 69 bool isRecordingComplete(); 70 71 /** 72 * Analyze the input and measure the latency between output and input. 73 * @return AAUDIO_OK or negative error 74 */ 75 int analyze(); 76 77 /** 78 * @return the measured latency in milliseconds 79 */ 80 double getLatencyMillis(); 81 82 /** 83 * @return the sample rate (in Hz) used for the measurement signal 84 */ 85 int getSampleRate(); 86 87 /** 88 * The confidence is based on a normalized correlation. 89 * It ranges from 0.0 to 1.0. Higher is better. 90 * 91 * @return the confidence in the latency result 92 */ 93 double getConfidence(); 94 95 /** 96 * Returns true if the stream was successfully opened in low-latency mode. 97 */ 98 bool isLowLatencyStream(); 99 getError()100 aaudio_result_t getError() { 101 return mInputError ? mInputError : mOutputError; 102 } 103 104 AAudioStream *mInputStream = nullptr; 105 AAudioStream *mOutputStream = nullptr; 106 aaudio_format_t mActualInputFormat = AAUDIO_FORMAT_INVALID; 107 int16_t *mInputShortData = nullptr; 108 float *mInputFloatData = nullptr; 109 int32_t mOutputSampleRate = 0; 110 111 aaudio_result_t mInputError = AAUDIO_OK; 112 aaudio_result_t mOutputError = AAUDIO_OK; 113 114 aaudio_data_callback_result_t dataCallbackProc( 115 void *audioData, 116 int32_t numFrames); 117 118 private: 119 120 int32_t readFormattedData(int32_t numFrames); 121 122 GlitchAnalyzer mSineAnalyzer; 123 PulseLatencyAnalyzer mPulseLatencyAnalyzer; 124 LoopbackProcessor *mLoopbackProcessor; 125 126 int32_t mInputFramesMaximum = 0; 127 int32_t mActualInputChannelCount = 0; 128 int32_t mActualOutputChannelCount = 0; 129 int32_t mNumCallbacksToDrain = kNumCallbacksToDrain; 130 int32_t mNumCallbacksToNotRead = kNumCallbacksToNotRead; 131 int32_t mNumCallbacksToDiscard = kNumCallbacksToDiscard; 132 int32_t mMinNumFrames = INT32_MAX; 133 int32_t mMaxNumFrames = 0; 134 int32_t mInsufficientReadCount = 0; 135 int32_t mInsufficientReadFrames = 0; 136 int32_t mFramesReadTotal = 0; 137 int32_t mFramesWrittenTotal = 0; 138 bool mIsDone = false; 139 bool mIsLowLatencyStream = false; 140 141 static constexpr int kLogPeriodMillis = 1000; 142 static constexpr int kNumInputChannels = 1; 143 static constexpr int kNumCallbacksToDrain = 20; 144 static constexpr int kNumCallbacksToNotRead = 0; // let input fill back up 145 static constexpr int kNumCallbacksToDiscard = 20; 146 static constexpr int kDefaultHangTimeMillis = 50; 147 static constexpr int kMaxGlitchEventsToSave = 32; 148 static constexpr int kDefaultOutputSizeBursts = 2; 149 }; 150 151 #endif // CTS_NATIVE_AUDIO_ANALYZER_H 152