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README.md

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);