68 lines
2.4 KiB
C++
68 lines
2.4 KiB
C++
/*
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* Copyright (C) 2012-2017 Intel Corporation
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* Copyright (c) 2017, Fuzhou Rockchip Electronics Co., Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _IMAGESCALER_CORE_H_
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#define _IMAGESCALER_CORE_H_
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#include <memory>
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#include "CommonBuffer.h"
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NAMESPACE_DECLARATION {
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/**
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* \class ImageScalerCore
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*
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*/
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class ImageScalerCore {
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public:
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static void downScaleImage(std::shared_ptr<CommonBuffer> srcBuf,
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std::shared_ptr<CommonBuffer> dstBuf);
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static void downScaleImage(void *src, void *dest,
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int dest_w, int dest_h, int dest_stride,
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int src_w, int src_h, int src_stride,
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int format, int src_skip_lines_top = 0,
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int src_skip_lines_bottom = 0);
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protected:
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static void downScaleYUY2Image(unsigned char *dest, const unsigned char *src,
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const int dest_w, const int dest_h, const int dest_stride,
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const int src_w, const int src_h, const int src_stride);
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static void downScaleAndCropNv12Image(
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unsigned char *dest, const unsigned char *src,
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const int dest_w, const int dest_h, const int dest_stride,
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const int src_w, const int src_h, const int src_stride,
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const int src_skip_lines_top = 0,
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const int src_skip_lines_bottom = 0);
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private:
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static const int MFP = 16; // Fractional bits for fixed point calculations
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private:
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static void cropComposeCopy(void *src, void *dst, unsigned int size);
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public:
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static void cropComposeUpscaleNV12_bl(
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void *src, unsigned int srcH, unsigned int srcStride,
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unsigned int srcCropLeft, unsigned int srcCropTop,
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unsigned int srcCropW, unsigned int srcCropH,
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void *dst, unsigned int dstH, unsigned int dstStride,
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unsigned int dstCropLeft, unsigned int dstCropTop,
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unsigned int dstCropW, unsigned int dstCropH);
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};
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} NAMESPACE_DECLARATION_END
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#endif // _IMAGESCALER_CORE_H_
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