[RFC PATCH v1 6/8] libcamera: ipa_data_serializer: Remove some vector `reserve()` calls

Jacopo Mondi jacopo.mondi at ideasonboard.com
Tue May 20 13:50:24 CEST 2025


Hi Barnabás

On Thu, May 15, 2025 at 02:00:10PM +0200, Barnabás Pőcze wrote:
> `appendPOD()` does a single insertion, so if only a single `appendPOD()`
> will be called on a vector before returning, then calling `reserve()`
> is not that useful, so remove it.
>
> Signed-off-by: Barnabás Pőcze <barnabas.pocze at ideasonboard.com>

Reviewed-by: Jacopo Mondi <jacopo.mondi at ideasonboard.com>

Thanks
  j

> ---
>  include/libcamera/internal/ipa_data_serializer.h | 1 -
>  src/libcamera/ipa_data_serializer.cpp            | 1 -
>  2 files changed, 2 deletions(-)
>
> diff --git a/include/libcamera/internal/ipa_data_serializer.h b/include/libcamera/internal/ipa_data_serializer.h
> index b4614f21d..b1fefba58 100644
> --- a/include/libcamera/internal/ipa_data_serializer.h
> +++ b/include/libcamera/internal/ipa_data_serializer.h
> @@ -309,7 +309,6 @@ public:
>  	serialize(const Flags<E> &data, [[maybe_unused]] ControlSerializer *cs = nullptr)
>  	{
>  		std::vector<uint8_t> dataVec;
> -		dataVec.reserve(sizeof(Flags<E>));
>  		appendPOD<uint32_t>(dataVec, static_cast<typename Flags<E>::Type>(data));
>
>  		return { dataVec, {} };
> diff --git a/src/libcamera/ipa_data_serializer.cpp b/src/libcamera/ipa_data_serializer.cpp
> index 2189a2466..0537f785b 100644
> --- a/src/libcamera/ipa_data_serializer.cpp
> +++ b/src/libcamera/ipa_data_serializer.cpp
> @@ -196,7 +196,6 @@ IPADataSerializer<type>::serialize(const type &data,			\
>  				  [[maybe_unused]] ControlSerializer *cs) \
>  {									\
>  	std::vector<uint8_t> dataVec;					\
> -	dataVec.reserve(sizeof(type));					\
>  	appendPOD<type>(dataVec, data);					\
>  									\
>  	return { dataVec, {} };						\
> --
> 2.49.0
>


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