[libcamera-devel] [PATCH 02/11] android: camera_request: Turn struct into a class

[Hirokazu Honda]

HI Umang and Laurent, thank you for the patch.

On Mon, Oct 18, 2021 at 10:29 PM Umang Jain <umang.jain at ideasonboard.com> wrote:
>
> From: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
>
> The Camera3RequestDescriptor structure is growing into an object with
> member functions. Turn it into a class, uninline the destructor to
> reduce code size, explicitly disable copy as requests are not copyable,
> and delete the default constructor to force all instances to be fully
> constructed.
>
> Signed-off-by: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
> ---
>  src/android/camera_device.h    |  2 +-
>  src/android/camera_request.cpp |  8 +++++---
>  src/android/camera_request.h   | 13 +++++++++----
>  3 files changed, 15 insertions(+), 8 deletions(-)
>
> diff --git a/src/android/camera_device.h b/src/android/camera_device.h
> index 86224aa1..863cf414 100644
> --- a/src/android/camera_device.h
> +++ b/src/android/camera_device.h
> @@ -33,7 +33,7 @@
>  #include "camera_worker.h"
>  #include "jpeg/encoder.h"
>
> -struct Camera3RequestDescriptor;
> +class Camera3RequestDescriptor;
>  struct CameraConfigData;
>
>  class CameraDevice : protected libcamera::Loggable
> diff --git a/src/android/camera_request.cpp b/src/android/camera_request.cpp
> index 93e546bf..16a632b3 100644
> --- a/src/android/camera_request.cpp
> +++ b/src/android/camera_request.cpp
> @@ -10,10 +10,10 @@
>  using namespace libcamera;
>
>  /*
> - * \struct Camera3RequestDescriptor
> + * \class Camera3RequestDescriptor
>   *
> - * A utility structure that groups information about a capture request to be
> - * later re-used at request complete time to notify the framework.
> + * A utility class that groups information about a capture request to be later
> + * reused at request complete time to notify the framework.
>   */
>
>  Camera3RequestDescriptor::Camera3RequestDescriptor(
> @@ -43,3 +43,5 @@ Camera3RequestDescriptor::Camera3RequestDescriptor(
>         request_ = std::make_unique<CaptureRequest>(camera,
>                                                     reinterpret_cast<uint64_t>(this));
>  }
> +
> +Camera3RequestDescriptor::~Camera3RequestDescriptor() = default;
> diff --git a/src/android/camera_request.h b/src/android/camera_request.h
> index 1346f6fa..79dfdb58 100644
> --- a/src/android/camera_request.h
> +++ b/src/android/camera_request.h
> @@ -10,6 +10,8 @@
>  #include <memory>
>  #include <vector>
>
> +#include <libcamera/base/class.h>
> +
>  #include <libcamera/camera.h>
>  #include <libcamera/framebuffer.h>
>
> @@ -18,18 +20,18 @@
>  #include "camera_metadata.h"
>  #include "camera_worker.h"
>
> -struct Camera3RequestDescriptor {
> +class Camera3RequestDescriptor
> +{
> +public:
>         enum class Status {
>                 Pending,
>                 Success,
>                 Error,
>         };
>
> -       Camera3RequestDescriptor() = default;
> -       ~Camera3RequestDescriptor() = default;
>         Camera3RequestDescriptor(libcamera::Camera *camera,
>                                  const camera3_capture_request_t *camera3Request);
> -       Camera3RequestDescriptor &operator=(Camera3RequestDescriptor &&) = default;
> +       ~Camera3RequestDescriptor();
>
>         bool isPending() const { return status_ == Status::Pending; }
>
> @@ -41,6 +43,9 @@ struct Camera3RequestDescriptor {
>
>         camera3_capture_result_t captureResult_ = {};
>         Status status_ = Status::Pending;
> +
> +private:

This private is unnecessary.

Reviewed-by: Hirokazu Honda <hiroh at chromium.org>

> +       LIBCAMERA_DISABLE_COPY(Camera3RequestDescriptor)
>  };
>
>  #endif /* __ANDROID_CAMERA_REQUEST_H__ */
> --
> 2.31.0
>