The CamCap command-line tool is a simple wrapper that uses libcamcap.

Thus, the functionality provided by the CLI tool maps directly to C++ API calls.

CLI	API	Description
`control <index> <value>`	CC::Device::set_control()	Set one of the controls to a specific value.
`control <name> <value>`	CC::Device::control_name_to_index()	Convert a control name or hex value to an index so the normal `set_control()` can be called.
`controls`	CC::Device::describe_controls()	Provide a block of text describing the state of all the controls.
`defaults`	CC::Device::set_all_controls_to_defaults()	Set all controls back to their default values.
`describe`	CC::Device::describe()	Generate a block of text that describes everything known about the camera.
`device <filename>`	CC::Device::initialize()	Initialize using the given device filename.
`format`	CC::Device::get_format()	Information on the currently-selected format.
`formatindex <index>`	CC::Device::get_formats() and CC::Device::set_format()	Set the image format to use.
`ignore <count>`	CC::Device::capture()	Capture an image and ignore it (don't save it to disk).
`initialize`	CC::Device::initialize()	Autu-detect a device to initialize.
`jpg <filename>`	CC::Device::capture_to_jpeg()	Capture an image and save it as a JPEG file.
`jpgs <count>`	CC::Device::capture_many_to_jpeg()	Capture many images and save them as JPEG files.
`libv4l enable\|disable`	CC::Device::set_libv4l_interface()	Enable or disable `libv4l` interface.
`mmap`	CC::Device::set_transfer_method()	Use the `mmap()` transfer method.
`raw <filename>`	CC::Device::capture()	Capture an image, return it as a raw sequence of bytes.
`read`	CC::Device::set_transfer_method()	Use the `read()` transfer method.
`retry <count>`	CC::Device::retry_incomplete_captures()	Set the number of retry attempts.
`size <width> <height>`	CC::Device::set_format()	Set the preferred image size.
`stream`	CC::Device::stream_start()	Turn on image streaming.
`version`	CC::get_version()	Get the version string.