[libcamera-devel] [PATCH] libcamera: raspberrypi: Drop std::move() where misleading
Kieran Bingham
kieran.bingham at ideasonboard.com
Mon Feb 22 11:57:07 CET 2021
Hi Laurent,
On 22/02/2021 10:46, Laurent Pinchart wrote:
> Usage of std::move() on a const lvalue will produce a const rvalue,
> which the compiler will bind to the const lvalue reference of the
> constructor or assignement operator. This results in the object being
> copied, not moved. Drop std::move() in that case as it's misleading.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Given how I've already been confused by this - it certainly makes sense
to clear it up.
Reviewed-by: Kieran Bingham <kieran.bingham at ideasonboard.com>
> ---
> src/libcamera/pipeline/raspberrypi/raspberrypi.cpp | 4 ++--
> 1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
> index 5bab313b5cc7..46b7c6dbba0a 100644
> --- a/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
> +++ b/src/libcamera/pipeline/raspberrypi/raspberrypi.cpp
> @@ -1289,7 +1289,7 @@ void RPiCameraData::statsMetadataComplete(uint32_t bufferId, const ControlList &
>
> /* Fill the Request metadata buffer with what the IPA has provided */
> Request *request = requestQueue_.front();
> - request->metadata() = std::move(controls);
> + request->metadata() = controls;
>
> /*
> * Also update the ScalerCrop in the metadata with what we actually
> @@ -1338,7 +1338,7 @@ void RPiCameraData::embeddedComplete(uint32_t bufferId)
>
> void RPiCameraData::setIspControls(const ControlList &controls)
> {
> - ControlList ctrls = std::move(controls);
> + ControlList ctrls = controls;
>
> if (ctrls.contains(V4L2_CID_USER_BCM2835_ISP_LENS_SHADING)) {
> ControlValue &value =
>
--
Regards
--
Kieran
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