[PATCH v3 6/7] ipa: libipa: Add data accessor to Histogram

[Kieran Bingham]

Quoting Stefan Klug (2024-10-08 16:29:44)
> For debugging purposes it is helpful to access the internal data of the
> histogram.  Add an accessor for that.
> 
> Signed-off-by: Stefan Klug <stefan.klug at ideasonboard.com>
> Reviewed-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> 

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

> ---
> Changes in v2:
> - return Span instead of reference to std::vector
> ---
>  src/ipa/libipa/histogram.cpp | 6 ++++++
>  src/ipa/libipa/histogram.h   | 1 +
>  2 files changed, 7 insertions(+)
> 
> diff --git a/src/ipa/libipa/histogram.cpp b/src/ipa/libipa/histogram.cpp
> index 5fbfadf5e4e1..10e44b54a0cf 100644
> --- a/src/ipa/libipa/histogram.cpp
> +++ b/src/ipa/libipa/histogram.cpp
> @@ -62,6 +62,12 @@ Histogram::Histogram(Span<const uint32_t> data)
>   * \return Number of bins
>   */
>  
> +/**
> + * \fn Histogram::data()
> + * \brief Retrieve the internal data
> + * \return The data
> + */
> +
>  /**
>   * \fn Histogram::total()
>   * \brief Retrieve the total number of values in the data set
> diff --git a/src/ipa/libipa/histogram.h b/src/ipa/libipa/histogram.h
> index 6fd641683694..a926002c8cf0 100644
> --- a/src/ipa/libipa/histogram.h
> +++ b/src/ipa/libipa/histogram.h
> @@ -36,6 +36,7 @@ public:
>         }
>  
>         size_t bins() const { return cumulative_.size() - 1; }
> +       const Span<const uint64_t> data() const { return cumulative_; }
>         uint64_t total() const { return cumulative_[cumulative_.size() - 1]; }
>         uint64_t cumulativeFrequency(double bin) const;
>         double quantile(double q, uint32_t first = 0, uint32_t last = UINT_MAX) const;
> -- 
> 2.43.0
>