mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-01 06:35:42 +00:00
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
/* -*- 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;
|
|
};
|
|
|
|
}
|
|
}
|
|
|
|
#endif
|