[libcamera-devel] [PATCH v2 2/3] Documentation: Update code examples to use the Request::reuse() method

Laurent Pinchart laurent.pinchart at ideasonboard.com
Fri Jun 17 16:51:53 CEST 2022


Hi Daniel,

Thank you for the patch.

On Fri, Jun 17, 2022 at 04:35:48PM +0200, Daniel Semkowicz via libcamera-devel wrote:
> After introduction of reuse(), there is no need of manual request
> reconfiguration. Furthermore, current example code does not work
> anymore.
> 
> Signed-off-by: Daniel Semkowicz <dse at thaumatec.com>

Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>

> ---
>  .../guides/application-developer.rst          | 20 +++----------------
>  1 file changed, 3 insertions(+), 17 deletions(-)
> 
> diff --git a/Documentation/guides/application-developer.rst b/Documentation/guides/application-developer.rst
> index 6ab8b7e5..a5f363cf 100644
> --- a/Documentation/guides/application-developer.rst
> +++ b/Documentation/guides/application-developer.rst
> @@ -480,26 +480,12 @@ libcamera repository.
>  .. _FileSink class: https://git.libcamera.org/libcamera/libcamera.git/tree/src/cam/file_sink.cpp
>  
>  With the handling of this request completed, it is possible to re-use the
> -buffers by adding them to a new ``Request`` instance with their matching
> -streams, and finally, queue the new capture request to the camera device:
> +request and the associated buffers and re-queue it to the camera
> +device:
>  
>  .. code:: cpp
>  
> -   request = camera->createRequest();
> -   if (!request)
> -   {
> -       std::cerr << "Can't create request" << std::endl;
> -       return;
> -   }
> -
> -   for (auto it = buffers.begin(); it != buffers.end(); ++it)
> -   {
> -       Stream *stream = it->first;
> -       FrameBuffer *buffer = it->second;
> -
> -       request->addBuffer(stream, buffer);
> -   }
> -
> +   request->reuse(Request::ReuseBuffers);
>     camera->queueRequest(request);
>  
>  Request queueing

-- 
Regards,

Laurent Pinchart


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