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/* libs/graphics/sgl/SkCoreBlitters.h
**
** Copyright 2006, Google Inc.
**
** 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 SkCoreBlitters_DEFINED
#define SkCoreBlitters_DEFINED
#include "SkBlitter.h"
#include "SkBlitRow.h"
class SkRasterBlitter : public SkBlitter {
public:
SkRasterBlitter(const SkBitmap& device) : fDevice(device) {}
protected:
const SkBitmap& fDevice;
private:
typedef SkBlitter INHERITED;
};
class SkShaderBlitter : public SkRasterBlitter {
public:
SkShaderBlitter(const SkBitmap& device, const SkPaint& paint);
virtual ~SkShaderBlitter();
protected:
SkShader* fShader;
private:
// illegal
SkShaderBlitter& operator=(const SkShaderBlitter&);
typedef SkRasterBlitter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class SkA8_Blitter : public SkRasterBlitter {
public:
SkA8_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
virtual void blitV(int x, int y, int height, SkAlpha alpha);
virtual void blitRect(int x, int y, int width, int height);
virtual void blitMask(const SkMask&, const SkIRect&);
virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
private:
unsigned fSrcA;
// illegal
SkA8_Blitter& operator=(const SkA8_Blitter&);
typedef SkRasterBlitter INHERITED;
};
class SkA8_Shader_Blitter : public SkShaderBlitter {
public:
SkA8_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual ~SkA8_Shader_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
virtual void blitMask(const SkMask&, const SkIRect&);
private:
SkXfermode* fXfermode;
SkPMColor* fBuffer;
uint8_t* fAAExpand;
// illegal
SkA8_Shader_Blitter& operator=(const SkA8_Shader_Blitter&);
typedef SkShaderBlitter INHERITED;
};
////////////////////////////////////////////////////////////////
class SkARGB32_Blitter : public SkRasterBlitter {
public:
SkARGB32_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
virtual void blitV(int x, int y, int height, SkAlpha alpha);
virtual void blitRect(int x, int y, int width, int height);
virtual void blitMask(const SkMask&, const SkIRect&);
virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
protected:
SkColor fPMColor;
private:
unsigned fSrcA, fSrcR, fSrcG, fSrcB;
// illegal
SkARGB32_Blitter& operator=(const SkARGB32_Blitter&);
typedef SkRasterBlitter INHERITED;
};
class SkARGB32_Black_Blitter : public SkARGB32_Blitter {
public:
SkARGB32_Black_Blitter(const SkBitmap& device, const SkPaint& paint)
: SkARGB32_Blitter(device, paint) {}
virtual void blitMask(const SkMask&, const SkIRect&);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
private:
typedef SkARGB32_Blitter INHERITED;
};
class SkARGB32_Opaque_Blitter : public SkARGB32_Blitter {
public:
SkARGB32_Opaque_Blitter(const SkBitmap& device, const SkPaint& paint)
: SkARGB32_Blitter(device, paint) { SkASSERT(paint.getAlpha() == 0xFF); }
virtual void blitMask(const SkMask&, const SkIRect&);
private:
typedef SkARGB32_Blitter INHERITED;
};
class SkARGB32_Shader_Blitter : public SkShaderBlitter {
public:
SkARGB32_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual ~SkARGB32_Shader_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
private:
SkXfermode* fXfermode;
SkPMColor* fBuffer;
// illegal
SkARGB32_Shader_Blitter& operator=(const SkARGB32_Shader_Blitter&);
typedef SkShaderBlitter INHERITED;
};
////////////////////////////////////////////////////////////////
class SkRGB16_Blitter : public SkRasterBlitter {
public:
SkRGB16_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
virtual void blitV(int x, int y, int height, SkAlpha alpha);
virtual void blitRect(int x, int y, int width, int height);
virtual void blitMask(const SkMask&, const SkIRect&);
virtual const SkBitmap* justAnOpaqueColor(uint32_t*);
private:
unsigned fScale;
uint16_t fColor16; // already scaled by fScale
uint16_t fRawColor16; // unscaled
uint16_t fRawDither16; // unscaled
SkBool8 fDoDither;
// illegal
SkRGB16_Blitter& operator=(const SkRGB16_Blitter&);
typedef SkRasterBlitter INHERITED;
};
class SkRGB16_Black_Blitter : public SkRGB16_Blitter {
public:
SkRGB16_Black_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitMask(const SkMask&, const SkIRect&);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
private:
typedef SkRGB16_Blitter INHERITED;
};
class SkRGB16_Shader_Blitter : public SkShaderBlitter {
public:
SkRGB16_Shader_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual ~SkRGB16_Shader_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
protected:
SkPMColor* fBuffer;
SkBlitRow::Proc fOpaqueProc;
SkBlitRow::Proc fAlphaProc;
private:
// illegal
SkRGB16_Shader_Blitter& operator=(const SkRGB16_Shader_Blitter&);
typedef SkShaderBlitter INHERITED;
};
// used only if the shader can perform shadSpan16
class SkRGB16_Shader16_Blitter : public SkRGB16_Shader_Blitter {
public:
SkRGB16_Shader16_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
private:
typedef SkRGB16_Shader_Blitter INHERITED;
};
class SkRGB16_Shader_Xfermode_Blitter : public SkShaderBlitter {
public:
SkRGB16_Shader_Xfermode_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual ~SkRGB16_Shader_Xfermode_Blitter();
virtual void blitH(int x, int y, int width);
virtual void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]);
private:
SkXfermode* fXfermode;
SkPMColor* fBuffer;
uint8_t* fAAExpand;
// illegal
SkRGB16_Shader_Xfermode_Blitter& operator=(const SkRGB16_Shader_Xfermode_Blitter&);
typedef SkShaderBlitter INHERITED;
};
/////////////////////////////////////////////////////////////////////////////
class SkA1_Blitter : public SkRasterBlitter {
public:
SkA1_Blitter(const SkBitmap& device, const SkPaint& paint);
virtual void blitH(int x, int y, int width);
private:
uint8_t fSrcA;
// illegal
SkA1_Blitter& operator=(const SkA1_Blitter&);
typedef SkRasterBlitter INHERITED;
};
extern SkBlitter* SkBlitter_ChooseD4444(const SkBitmap& device,
const SkPaint& paint,
void* storage, size_t storageSize);
#endif
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