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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
#ifndef _MOZILLA_GFX_IMAGESCALING_H
#define _MOZILLA_GFX_IMAGESCALING_H
#include "Types.h"
#include <vector>
#include "Point.h"
namespace mozilla {
namespace gfx {
class ImageHalfScaler {
public:
ImageHalfScaler(uint8_t* aData, int32_t aStride, const IntSize& aSize)
: mOrigData(aData),
mOrigStride(aStride),
mOrigSize(aSize),
mDataStorage(nullptr),
mData(nullptr),
mStride(0) {}
~ImageHalfScaler() { delete[] mDataStorage; }
void ScaleForSize(const IntSize& aSize);
uint8_t* GetScaledData() const { return mData; }
IntSize GetSize() const { return mSize; }
uint32_t GetStride() const { return mStride; }
private:
void HalfImage2D(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageVertical(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageHorizontal(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
// This is our SSE2 scaling function. Our destination must always be 16-byte
// aligned and use a 16-byte aligned stride.
void HalfImage2D_SSE2(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageVertical_SSE2(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageHorizontal_SSE2(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImage2D_C(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageVertical_C(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
void HalfImageHorizontal_C(uint8_t* aSource, int32_t aSourceStride,
const IntSize& aSourceSize, uint8_t* aDest,
uint32_t aDestStride);
uint8_t* mOrigData;
int32_t mOrigStride;
IntSize mOrigSize;
uint8_t* mDataStorage;
// Guaranteed 16-byte aligned
uint8_t* mData;
IntSize mSize;
// Guaranteed 16-byte aligned
uint32_t mStride;
};
} // namespace gfx
} // namespace mozilla
#endif