зеркало из https://github.com/mozilla/gecko-dev.git
55 строки
1.4 KiB
C++
55 строки
1.4 KiB
C++
/* -*- 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
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#ifndef MOZILLA_GFX_CONVOLUTION_FILTER_H_
|
|
#define MOZILLA_GFX_CONVOLUTION_FILTER_H_
|
|
|
|
#include "mozilla/UniquePtr.h"
|
|
|
|
class SkConvolutionFilter1D;
|
|
|
|
namespace mozilla {
|
|
namespace gfx {
|
|
|
|
class ConvolutionFilter
|
|
{
|
|
public:
|
|
ConvolutionFilter();
|
|
~ConvolutionFilter();
|
|
|
|
int32_t MaxFilter() const;
|
|
int32_t NumValues() const;
|
|
|
|
bool GetFilterOffsetAndLength(int32_t aRowIndex, int32_t* aResultOffset, int32_t* aResultLength);
|
|
|
|
void ConvolveHorizontally(const uint8_t* aSrc, uint8_t* aDst, bool aHasAlpha);
|
|
void ConvolveVertically(uint8_t* const* aSrc, uint8_t* aDst, int32_t aRowIndex, int32_t aRowSize, bool aHasAlpha);
|
|
|
|
enum class ResizeMethod
|
|
{
|
|
BOX,
|
|
TRIANGLE,
|
|
LANCZOS3,
|
|
HAMMING,
|
|
MITCHELL
|
|
};
|
|
|
|
bool ComputeResizeFilter(ResizeMethod aResizeMethod, int32_t aSrcSize, int32_t aDstSize);
|
|
|
|
static inline size_t PadBytesForSIMD(size_t aBytes) {
|
|
return (aBytes + 31) & ~31;
|
|
}
|
|
|
|
private:
|
|
UniquePtr<SkConvolutionFilter1D> mFilter;
|
|
};
|
|
|
|
} // namespace gfx
|
|
} // namespace mozilla
|
|
|
|
#endif /* MOZILLA_GFX_CONVOLUTION_FILTER_H_ */
|
|
|