[libcamera-devel] [PATCH v2] libcamera: request: Add operator<<()

[Kieran Bingham]

Quoting Jacopo Mondi via libcamera-devel (2022-06-04 10:24:22)
> With the recent addition of operator<<() in most libcamera core classes
> to replace usage of the toString() function the Request class was left
> behind.
> 
> Add operator<<() for the Request class and reimplement toString().
> 
> Signed-off-by: Jacopo Mondi <jacopo at jmondi.org>

Looks fine to me.


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

> 
> ---
> v2:
> - reimplement toString() using operator<<
> 
> ---
>  include/libcamera/internal/request.h |  1 +
>  include/libcamera/request.h          |  3 +++
>  src/libcamera/request.cpp            | 20 ++++++++++++++++----
>  3 files changed, 20 insertions(+), 4 deletions(-)
> 
> diff --git a/include/libcamera/internal/request.h b/include/libcamera/internal/request.h
> index 1f2499896e23..9dadd6c60361 100644
> --- a/include/libcamera/internal/request.h
> +++ b/include/libcamera/internal/request.h
> @@ -44,6 +44,7 @@ public:
> 
>  private:
>         friend class PipelineHandler;
> +       friend std::ostream &operator<<(std::ostream &out, const Request &r);
> 
>         void doCancelRequest();
>         void emitPrepareCompleted();
> diff --git a/include/libcamera/request.h b/include/libcamera/request.h
> index 1eb537e9b09b..dffde1536cad 100644
> --- a/include/libcamera/request.h
> +++ b/include/libcamera/request.h
> @@ -9,6 +9,7 @@
> 
>  #include <map>
>  #include <memory>
> +#include <ostream>
>  #include <stdint.h>
>  #include <string>
>  #include <unordered_set>
> @@ -75,4 +76,6 @@ private:
>         Status status_;
>  };
> 
> +std::ostream &operator<<(std::ostream &out, const Request &r);
> +
>  } /* namespace libcamera */
> diff --git a/src/libcamera/request.cpp b/src/libcamera/request.cpp
> index 5704972d86af..51d74b294d38 100644
> --- a/src/libcamera/request.cpp
> +++ b/src/libcamera/request.cpp
> @@ -582,16 +582,28 @@ bool Request::hasPendingBuffers() const
>  std::string Request::toString() const
>  {
>         std::stringstream ss;
> +       ss << *this;
> 
> +       return ss.str();
> +}
> +
> +/**
> + * \brief Insert a text representation of a Request into an output stream
> + * \param[in] out The output stream
> + * \param[in] r The Request
> + * \return The output stream \a out
> + */
> +std::ostream &operator<<(std::ostream &out, const Request &r)
> +{
>         /* Pending, Completed, Cancelled(X). */
>         static const char *statuses = "PCX";
> 
>         /* Example Output: Request(55:P:1/2:6523524) */
> -       ss << "Request(" << sequence() << ":" << statuses[status_] << ":"
> -          << _d()->pending_.size() << "/" << bufferMap_.size() << ":"
> -          << cookie_ << ")";
> +       out << "Request(" << r.sequence() << ":" << statuses[r.status()] << ":"
> +           << r._d()->pending_.size() << "/" << r.buffers().size() << ":"
> +           << r.cookie() << ")";
> 
> -       return ss.str();
> +       return out;
>  }
> 
>  } /* namespace libcamera */
> --
> 2.35.1
>