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https://git.libcamera.org/libcamera/libcamera.git
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f0421988dc
Add a basic image Thumbnailer class for the frames being captured. Currently, the thumbnailer can scale NV12 frames. It shall be used to generate a thumbnail image for EXIF metadata, in the subsequent commit. Signed-off-by: Umang Jain <email@uajain.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com> Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
36 lines
855 B
C++
36 lines
855 B
C++
/* SPDX-License-Identifier: LGPL-2.1-or-later */
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/*
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* Copyright (C) 2020, Google Inc.
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*
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* thumbnailer.h - Simple image thumbnailer
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*/
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#ifndef __ANDROID_JPEG_THUMBNAILER_H__
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#define __ANDROID_JPEG_THUMBNAILER_H__
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#include <libcamera/geometry.h>
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#include "libcamera/internal/buffer.h"
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#include "libcamera/internal/formats.h"
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class Thumbnailer
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{
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public:
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Thumbnailer();
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void configure(const libcamera::Size &sourceSize,
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libcamera::PixelFormat pixelFormat);
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void createThumbnail(const libcamera::FrameBuffer &source,
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std::vector<unsigned char> *dest);
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const libcamera::Size &size() const { return targetSize_; }
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private:
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libcamera::Size computeThumbnailSize() const;
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libcamera::PixelFormat pixelFormat_;
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libcamera::Size sourceSize_;
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libcamera::Size targetSize_;
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bool valid_;
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};
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#endif /* __ANDROID_JPEG_THUMBNAILER_H__ */
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