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/*
* Copyright (C) 2008 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef SkKernel33MaskFilter_DEFINED
#define SkKernel33MaskFilter_DEFINED
#include "SkMaskFilter.h"
class SkKernel33ProcMaskFilter : public SkMaskFilter {
public:
SkKernel33ProcMaskFilter(unsigned percent256 = 256)
: fPercent256(percent256) {}
virtual uint8_t computeValue(uint8_t* const* srcRows) = 0;
// overrides from SkMaskFilter
virtual SkMask::Format getFormat();
virtual bool filterMask(SkMask*, const SkMask&, const SkMatrix&, SkIPoint*);
// overrides from SkFlattenable
virtual void flatten(SkFlattenableWriteBuffer& wb);
protected:
SkKernel33ProcMaskFilter(SkFlattenableReadBuffer& rb);
private:
int fPercent256;
typedef SkMaskFilter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class SkKernel33MaskFilter : public SkKernel33ProcMaskFilter {
public:
SkKernel33MaskFilter(const int coeff[3][3], int shift, int percent256 = 256)
: SkKernel33ProcMaskFilter(percent256)
{
memcpy(fKernel, coeff, 9 * sizeof(int));
fShift = shift;
}
// override from SkKernel33ProcMaskFilter
virtual uint8_t computeValue(uint8_t* const* srcRows);
// overrides from SkFlattenable
virtual void flatten(SkFlattenableWriteBuffer& wb);
virtual Factory getFactory();
private:
int fKernel[3][3];
int fShift;
SkKernel33MaskFilter(SkFlattenableReadBuffer& rb);
static SkFlattenable* Create(SkFlattenableReadBuffer& rb);
typedef SkKernel33ProcMaskFilter INHERITED;
};
#endif
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