60 lines
1.5 KiB
C++
60 lines
1.5 KiB
C++
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <fcntl.h>
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#include <stdlib.h> /* exit() */
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#include <sys/ioctl.h> /* ioctl() */
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#include <libv4lconvert.h>
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#include <iostream>
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#include "WebcamTracker.h"
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using namespace std;
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int main(int argc, char * argv[])
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{
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WebcamTracker("/dev/video0");
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}
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WebcamTracker::WebcamTracker(const char * device)
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{
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m_open = false;
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m_fd = open(device, O_RDWR);
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if (m_fd >= 0)
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{
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m_open = true;
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struct v4l2_capability cap;
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ioctl(m_fd, VIDIOC_QUERYCAP, &cap);
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#define check_cap(x) do { \
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if (cap.capabilities & (x)) \
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cout << " cap: " << #x << endl; \
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} while (0)
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check_cap(V4L2_CAP_VIDEO_CAPTURE);
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check_cap(V4L2_CAP_VIDEO_OUTPUT);
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check_cap(V4L2_CAP_VIDEO_OVERLAY);
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check_cap(V4L2_CAP_VBI_CAPTURE);
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check_cap(V4L2_CAP_VBI_OUTPUT);
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check_cap(V4L2_CAP_SLICED_VBI_CAPTURE);
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check_cap(V4L2_CAP_SLICED_VBI_OUTPUT);
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check_cap(V4L2_CAP_RDS_CAPTURE);
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check_cap(V4L2_CAP_VIDEO_OUTPUT_OVERLAY);
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check_cap(V4L2_CAP_TUNER);
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check_cap(V4L2_CAP_AUDIO);
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check_cap(V4L2_CAP_RADIO);
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check_cap(V4L2_CAP_READWRITE);
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check_cap(V4L2_CAP_ASYNCIO);
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check_cap(V4L2_CAP_STREAMING);
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}
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else
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{
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cerr << "Could not open device '" << device << "'" << endl;
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}
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}
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WebcamTracker::~WebcamTracker()
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{
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if (m_open)
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{
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close(m_fd);
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}
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}
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