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2019-02-01cam: options: Create a template class for optionsNiklas Söderlund
In preparation to adding more parsers create a template class to hold the parsed information. The rational for making it a template are that different parsers can index the options using different data types. The OptionsParser index its options using an int while the upcoming KeyValyeParser will index its options using strings for example. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2019-02-01cam: options: Move struct OptionLaurent Pinchart
The Option structure is declared within the OptionsParser, but will later be needed by other parsers. Move it outside the OptionsParser class. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
2019-02-01cam: options: Move enum OptionArgumentNiklas Söderlund
The enumeration of the different possibilities for arguments can be used by other parser then OptionsParser. Move it outside the class to make it ready to be used by other parsers. Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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>