diff options
author | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2021-06-25 00:09:15 +0100 |
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committer | Kieran Bingham <kieran.bingham@ideasonboard.com> | 2021-06-25 16:11:03 +0100 |
commit | 6410d1d37c1ea9d1d168840a7ba063facb0bc9d6 (patch) | |
tree | d23c636895d51df3b4b6fe128f322132203a3a26 /include/libcamera/base/class.h | |
parent | cbdc93e9d1666010d49e06940158a37c61cc6fa7 (diff) |
libcamera/base: Move class helpers to the base library
Move the class support infrastructure to the base library.
Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>
Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Diffstat (limited to 'include/libcamera/base/class.h')
-rw-r--r-- | include/libcamera/base/class.h | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/include/libcamera/base/class.h b/include/libcamera/base/class.h new file mode 100644 index 00000000..a07dac05 --- /dev/null +++ b/include/libcamera/base/class.h @@ -0,0 +1,105 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2020, Google Inc. + * + * class.h - Utilities and helpers for classes + */ +#ifndef __LIBCAMERA_BASE_CLASS_H__ +#define __LIBCAMERA_BASE_CLASS_H__ + +#include <memory> + +namespace libcamera { + +#ifndef __DOXYGEN__ +#define LIBCAMERA_DISABLE_COPY(klass) \ + klass(const klass &) = delete; \ + klass &operator=(const klass &) = delete; + +#define LIBCAMERA_DISABLE_MOVE(klass) \ + klass(klass &&) = delete; \ + klass &operator=(klass &&) = delete; + +#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass) \ + LIBCAMERA_DISABLE_COPY(klass) \ + LIBCAMERA_DISABLE_MOVE(klass) +#else +#define LIBCAMERA_DISABLE_COPY(klass) +#define LIBCAMERA_DISABLE_MOVE(klass) +#define LIBCAMERA_DISABLE_COPY_AND_MOVE(klass) +#endif + +#ifndef __DOXYGEN__ +#define LIBCAMERA_DECLARE_PRIVATE() \ +public: \ + class Private; \ + friend class Private; + +#define LIBCAMERA_DECLARE_PUBLIC(klass) \ + friend class klass; \ + using Public = klass; + +#define LIBCAMERA_D_PTR() \ + _d<Private>(); + +#define LIBCAMERA_O_PTR() \ + _o<Public>(); + +#else +#define LIBCAMERA_DECLARE_PRIVATE() +#define LIBCAMERA_DECLARE_PUBLIC(klass) +#define LIBCAMERA_D_PTR() +#define LIBCAMERA_O_PTR() +#endif + +class Extensible +{ +public: + class Private + { + public: + Private(Extensible *o); + virtual ~Private(); + +#ifndef __DOXYGEN__ + template<typename T> + const T *_o() const + { + return static_cast<const T *>(o_); + } + + template<typename T> + T *_o() + { + return static_cast<T *>(o_); + } +#endif + + private: + Extensible *const o_; + }; + + Extensible(Private *d); + +protected: +#ifndef __DOXYGEN__ + template<typename T> + const T *_d() const + { + return static_cast<const T *>(d_.get()); + } + + template<typename T> + T *_d() + { + return static_cast<T *>(d_.get()); + } +#endif + +private: + const std::unique_ptr<Private> d_; +}; + +} /* namespace libcamera */ + +#endif /* __LIBCAMERA_BASE_CLASS_H__ */ |