/libv4l2cpp

V4L2 C++ wrapper

Primary LanguageC++The UnlicenseUnlicense

libv4l2cpp

It is a C++ wrapper for V4L2

Dependencies

  • liblog4cpp5-dev (optional)

V4L2 Capture

  • create a V4L2 Capture interface using MMAP interface:

      V4L2DeviceParameters param("/dev/video0", V4L2_PIX_FMT_*, width, height, fps, IOTYPE_MMAP, verbose);
  V4l2Capture* videoCapture = V4l2Capture::create(param);

  • data are available :

      timeval timeout; 
  bool isReadable = videoCapture->isReadable(&timeout);

  • read data :

      size_t nb = videoCapture->read(buffer, bufferSize);

V4L2 Output

  • To create a V4L2 Output interface using MMAP interface:

      V4L2DeviceParameters param("/dev/video0", V4L2_PIX_FMT_*, width, height, fps, IOTYPE_MMAP, verbose);
  V4l2Output* videoOutput = V4l2Output::create(param);

  • data could be written :

      timeval timeout; 
  bool isWritable = videoOutput->isWritable(&timeout);

  • write data :

      size_t nb = videoOutput->write(buffer, bufferSize);