[PATCH v3 4/4] apps: cam: Print control direction information

[Kieran Bingham]

Quoting Paul Elder (2024-11-29 09:19:16)
> Now that there is support for retrieving the allowed directions of a
> control, print this information when listing controls.
> 
> Sample output:
> $ cam --list-controls -c 2
> Using camera Virtual0 as cam0
> Control: [inout] draft::FaceDetectMode:
>   - FaceDetectModeOff (0)
> Control: [in   ] libcamera::FrameDurationLimits: [16666..33333]
>    Size: 2
> 

Looks good.

Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>

> Signed-off-by: Paul Elder <paul.elder at ideasonboard.com>
> 
> ---
> No change in v3
> 
> Changes in v2:
> - s/i/in/, s/o/out/ so that the output is easier to read
> ---
>  src/apps/cam/camera_session.cpp | 10 ++++++++--
>  1 file changed, 8 insertions(+), 2 deletions(-)
> 
> diff --git a/src/apps/cam/camera_session.cpp b/src/apps/cam/camera_session.cpp
> index 6e9890ccfda1..9e93482775c3 100644
> --- a/src/apps/cam/camera_session.cpp
> +++ b/src/apps/cam/camera_session.cpp
> @@ -159,12 +159,18 @@ CameraSession::~CameraSession()
>  void CameraSession::listControls() const
>  {
>         for (const auto &[id, info] : camera_->controls()) {
> +               std::stringstream io;
> +               io << "["
> +                  << (id->isInput() ? "in" : "  ")
> +                  << (id->isOutput() ? "out" : "   ")
> +                  << "] ";
> +
>                 if (info.values().empty()) {
> -                       std::cout << "Control: "
> +                       std::cout << "Control: " << io.str()
>                                   << id->vendor() << "::" << id->name() << ": "
>                                   << info.toString() << std::endl;
>                 } else {
> -                       std::cout << "Control: "
> +                       std::cout << "Control: " << io.str()
>                                   << id->vendor() << "::" << id->name() << ":"
>                                   << std::endl;
>                         for (const auto &value : info.values()) {
> -- 
> 2.39.2
>