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Running the cam tool without any options results in the tool to exit
with EXIT_FAILURE but no usage being printed, this is confusing. Improve
this by also printing the usage text.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Since commit c8c546fe99a343c1 ("cam: options: Add option type handling
to options parser") introduced type handling for options the context the
option is read became important. When reading the camera option for
printing there is no explicit context to print it as a string and
instead the int context was chosen resulting in:
$ cam --camera foo
Camera 0 not found
While the expected output is:
$ cam --camera foo
Camera foo not found
Fix this by providing the correct context for the camera option when
printing it.
Fixes: c8c546fe99a343c1 ("cam: options: Add option type handling to options parser")
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The return value when start() and stop() the camera should be checked
and handled.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The allocated buffers needs to be freed once the application is done
with them.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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The only caller of configureStreams() stores its return value as an int
and not bool. This is confusing and also prevents the (possibly)
different error codes returned by Camera::configureStreams() to be
propagated inside the cam tool. Fix this by changing the return type to
int and propagate the return value from the camera.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Use the helper BufferWriter to optionally write frames to disk as they
are captured.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add an option to capture frames from a camera and keep it running until
the user terminates by sending SIGINT.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Jacopo Mondi <jacopo@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Add an option to configure the first stream of a camera from an argument
with options and parse the width, height and pixel format from that
list.
The pixel format is still specified as a integer which should correspond
to the kernels FOURCC identifiers. Going forward this should be turned
into a string representation and the cam parser should translate between
the two.
Signed-off-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
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Extend the options parser with support for option types. All options
must now specify the type of their argument, and the parser
automatically parses the argument and handles errors internally.
Available types are none, integer or string.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>
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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>
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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>
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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>
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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>
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