C++音频实时收集处理portaudio

// 文件名：GYSheng Default Template // 创建时间：2024/8/13 17:22:19 #include"MyAlgorithm.h" using namespace std; #define SAMPLE_RATE 44100 #define FRAMES_PER_BUFFER 512 #define CURVOLUME "Low" PaStream *stream; MyAlgorithm myAlgorithm(CURVOLUME); // 音频输入回调函数 static int paCallback(const void *inputBuffer, void *outputBuffer, unsigned long framesPerBuffer, const PaStreamCallbackTimeInfo *timeInfo, PaStreamCallbackFlags statusFlags, void *userData) { float *in = (float *)inputBuffer; float dbValue = myAlgorithm.calculateDb(in, framesPerBuffer); float predDis = myAlgorithm.predictDistanceKNN(dbValue); cout << "音量: " << myAlgorithm.getCurVol()<<"\t" << "dB值: " << dbValue <<"\t\t" << "预测距离: " << predDis << " 米" << "\t\t"; if (predDis <= 2.0) { cout << "需要识别处理！" << endl; /*识别处理逻辑*/ } else { cout << "距离较远..." << endl; } return paContinue; } int main() { PaError err; err = Pa_Initialize(); if (err != paNoError) { cout << "PortAudio error: " << Pa_GetErrorText(err) << endl; return -1; } err = Pa_OpenDefaultStream(&stream, 1, 0, paFloat32, SAMPLE_RATE, FRAMES_PER_BUFFER, paCallback, nullptr); if (err != paNoError) { cout << "PortAudio error: " << Pa_GetErrorText(err) << endl; Pa_Terminate(); return -1; } err = Pa_StartStream(stream); if (err != paNoError) { cout << "PortAudio error: " << Pa_GetErrorText(err) << endl; Pa_CloseStream(stream); Pa_Terminate(); return -1; } cout << "开始音频采集..." << endl; Pa_Sleep(10000); // 采集10s err = Pa_StopStream(stream); if (err != paNoError) { cout << "PortAudio error: " << Pa_GetErrorText(err) << endl; } Pa_CloseStream(stream); Pa_Terminate(); cout << "音频采集结束." << endl; system("pause"); return 0; }