// 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;
}
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