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