/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- * 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 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #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) { } ~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