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109 lines
4.1 KiB
C++
109 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Corporation code.
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*
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* The Initial Developer of the Original Code is Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2011
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* Bas Schouten <bschouten@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef _MOZILLA_GFX_IMAGESCALING_H
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#define _MOZILLA_GFX_IMAGESCALING_H
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#include "Types.h"
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#include <vector>
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#include "Point.h"
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namespace mozilla {
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namespace gfx {
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class ImageHalfScaler
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{
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public:
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ImageHalfScaler(uint8_t *aData, int32_t aStride, const IntSize &aSize)
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: mOrigData(aData), mOrigStride(aStride), mOrigSize(aSize)
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, mDataStorage(NULL)
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{
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}
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~ImageHalfScaler()
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{
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delete [] mDataStorage;
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}
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void ScaleForSize(const IntSize &aSize);
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uint8_t *GetScaledData() const { return mData; }
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IntSize GetSize() const { return mSize; }
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uint32_t GetStride() const { return mStride; }
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private:
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void HalfImage2D(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageVertical(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageHorizontal(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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// This is our SSE2 scaling function. Our destination must always be 16-byte
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// aligned and use a 16-byte aligned stride.
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void HalfImage2D_SSE2(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageVertical_SSE2(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageHorizontal_SSE2(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImage2D_C(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageVertical_C(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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void HalfImageHorizontal_C(uint8_t *aSource, int32_t aSourceStride, const IntSize &aSourceSize,
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uint8_t *aDest, uint32_t aDestStride);
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uint8_t *mOrigData;
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int32_t mOrigStride;
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IntSize mOrigSize;
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uint8_t *mDataStorage;
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// Guaranteed 16-byte aligned
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uint8_t *mData;
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IntSize mSize;
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// Guaranteed 16-byte aligned
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uint32_t mStride;
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};
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}
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}
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#endif
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