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2019-01-27cam: options: Indent multi-line help message correctlyLaurent Pinchart
Split multi-line help messages and indent all lines the same way. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-01-25cam: options: optional arguments needs to be specified as --foo=barNiklas Söderlund
It's not stated in the getopt_long documentation but optional arguments need to be specified as '--foo=bar' instead of '--foo bar', otherwise the value is not propagated to optarg during argument parsing. Update the usage printing helper to reflect this requirement. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-01-25cam: Add event loopLaurent Pinchart
Add a simple event loop to the cam application and use it in the main() function, with an example of how to handle SIGINT to gracefully stop the loop. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-01-22cam: options: Don't implement move semantics for OptionsParser::OptionsLaurent Pinchart
The compiler creates a move constructor automatically when none is supplied, and it does the right thing by default in this case. Using std::move() inside the function prevents the compiler from doing return value optimization and actually hinders performances. Using std::move() in the caller is unnecessary, the move constructor is used automatically by the compiler. For all these reasons remove the tentative optimization that resulted in worse performances and worse code. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-01-22cam: Extract option parser to separate fileLaurent Pinchart
And turn it into an OptionsParser object. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-01-22cam: add utility to control camerasNiklas Söderlund
Provide a utility to interact with cameras. This initial state is limited and only supports listing cameras in the system and selecting a camera to interact with. There is not much a interacting possible yet with a camera so the tool simply exercise the API to get hold of a camera. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>