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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 argc, char** argv)
{
CommandLineParser parser(argc, argv, "{@audio||}");
string file = parser.get<string>("@audio");
if (file.empty())
{
return 1;
}
Mat frame;
vector<vector<Mat>> audioData;
VideoCapture cap;
vector<int> params { CAP_PROP_AUDIO_STREAM, 0,
CAP_PROP_VIDEO_STREAM, -1,
CAP_PROP_AUDIO_DATA_DEPTH, CV_16S };
cap.open(file, CAP_MSMF, params);
if (!cap.isOpened())
{
cerr << "ERROR! Can't to open file: " + file << 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;
int numberOfSamples = 0;
audioData.resize(numberOfChannels);
for (;;)
{
if (cap.grab())
{
for (int nCh = 0; nCh < numberOfChannels; nCh++)
{
cap.retrieve(frame, audioBaseIndex+nCh);
audioData[nCh].push_back(frame);
numberOfSamples+=frame.cols;
}
}
else { break; }
}
cout << "Number of samples: " << numberOfSamples << endl;
return 0;
}
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