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#include <opencv2/core.hpp>
#include <opencv2/videoio.hpp>
#include <opencv2/highgui.hpp>
#include <iostream>
using namespace cv;
using namespace std;
int main(int, char**)
{
Mat frame;
vector<Mat> audioData;
VideoCapture cap;
vector<int> params { CAP_PROP_AUDIO_STREAM, 0,
CAP_PROP_VIDEO_STREAM, -1 };
cap.open(0, CAP_MSMF, params);
if (!cap.isOpened())
{
cerr << "ERROR! Can't to open microphone" << endl;
return -1;
}
const int audioBaseIndex = (int)cap.get(CAP_PROP_AUDIO_BASE_INDEX);
const int numberOfChannels = (int)cap.get(CAP_PROP_AUDIO_TOTAL_CHANNELS);
cout << "CAP_PROP_AUDIO_DATA_DEPTH: " << depthToString((int)cap.get(CAP_PROP_AUDIO_DATA_DEPTH)) << endl;
cout << "CAP_PROP_AUDIO_SAMPLES_PER_SECOND: " << cap.get(CAP_PROP_AUDIO_SAMPLES_PER_SECOND) << endl;
cout << "CAP_PROP_AUDIO_TOTAL_CHANNELS: " << numberOfChannels << endl;
cout << "CAP_PROP_AUDIO_TOTAL_STREAMS: " << cap.get(CAP_PROP_AUDIO_TOTAL_STREAMS) << endl;
const double cvTickFreq = getTickFrequency();
int64 sysTimeCurr = getTickCount();
int64 sysTimePrev = sysTimeCurr;
while ((sysTimeCurr-sysTimePrev)/cvTickFreq < 10)
{
if (cap.grab())
{
for (int nCh = 0; nCh < numberOfChannels; nCh++)
{
cap.retrieve(frame, audioBaseIndex+nCh);
audioData.push_back(frame);
sysTimeCurr = getTickCount();
}
}
else
{
cerr << "Grab error" << endl;
break;
}
}
int numberOfSamles = 0;
for (auto item : audioData)
numberOfSamles+=item.cols;
cout << "Number of samples: " << numberOfSamles << endl;
return 0;
}
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