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/* libs/graphics/sgl/SkSpriteBlitter_ARGB32.cpp
**
** Copyright 2006, 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.
*/
#include "SkSpriteBlitter.h"
#include "SkBlitRow.h"
#include "SkColorFilter.h"
#include "SkColorPriv.h"
#include "SkTemplates.h"
#include "SkUtils.h"
#include "SkXfermode.h"
///////////////////////////////////////////////////////////////////////////////
class Sprite_D32_S32 : public SkSpriteBlitter {
public:
Sprite_D32_S32(const SkBitmap& src, U8CPU alpha) : INHERITED(src) {
SkASSERT(src.config() == SkBitmap::kARGB_8888_Config);
unsigned flags32 = 0;
if (255 != alpha) {
flags32 |= SkBlitRow::kGlobalAlpha_Flag32;
}
if (!src.isOpaque()) {
flags32 |= SkBlitRow::kSrcPixelAlpha_Flag32;
}
fProc32 = SkBlitRow::Factory32(flags32);
fAlpha = alpha;
}
virtual void blitRect(int x, int y, int width, int height) {
SkASSERT(width > 0 && height > 0);
SK_RESTRICT uint32_t* dst = fDevice->getAddr32(x, y);
const SK_RESTRICT uint32_t* src = fSource->getAddr32(x - fLeft,
y - fTop);
size_t dstRB = fDevice->rowBytes();
size_t srcRB = fSource->rowBytes();
SkBlitRow::Proc32 proc = fProc32;
U8CPU alpha = fAlpha;
do {
proc(dst, src, width, alpha);
dst = (SK_RESTRICT uint32_t*)((char*)dst + dstRB);
src = (const SK_RESTRICT uint32_t*)((const char*)src + srcRB);
} while (--height != 0);
}
private:
SkBlitRow::Proc32 fProc32;
U8CPU fAlpha;
typedef SkSpriteBlitter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class Sprite_D32_XferFilter : public SkSpriteBlitter {
public:
Sprite_D32_XferFilter(const SkBitmap& source, const SkPaint& paint)
: SkSpriteBlitter(source) {
fColorFilter = paint.getColorFilter();
SkSafeRef(fColorFilter);
fXfermode = paint.getXfermode();
SkSafeRef(fXfermode);
fBufferSize = 0;
fBuffer = NULL;
unsigned flags32 = 0;
if (255 != paint.getAlpha()) {
flags32 |= SkBlitRow::kGlobalAlpha_Flag32;
}
if (!source.isOpaque()) {
flags32 |= SkBlitRow::kSrcPixelAlpha_Flag32;
}
fProc32 = SkBlitRow::Factory32(flags32);
fAlpha = paint.getAlpha();
}
virtual ~Sprite_D32_XferFilter() {
delete[] fBuffer;
SkSafeUnref(fXfermode);
SkSafeUnref(fColorFilter);
}
virtual void setup(const SkBitmap& device, int left, int top,
const SkPaint& paint) {
this->INHERITED::setup(device, left, top, paint);
int width = device.width();
if (width > fBufferSize) {
fBufferSize = width;
delete[] fBuffer;
fBuffer = new SkPMColor[width];
}
}
protected:
SkColorFilter* fColorFilter;
SkXfermode* fXfermode;
int fBufferSize;
SkPMColor* fBuffer;
SkBlitRow::Proc32 fProc32;
U8CPU fAlpha;
private:
typedef SkSpriteBlitter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class Sprite_D32_S32A_XferFilter : public Sprite_D32_XferFilter {
public:
Sprite_D32_S32A_XferFilter(const SkBitmap& source, const SkPaint& paint)
: Sprite_D32_XferFilter(source, paint) {}
virtual void blitRect(int x, int y, int width, int height) {
SkASSERT(width > 0 && height > 0);
SK_RESTRICT uint32_t* dst = fDevice->getAddr32(x, y);
const SK_RESTRICT uint32_t* src = fSource->getAddr32(x - fLeft,
y - fTop);
unsigned dstRB = fDevice->rowBytes();
unsigned srcRB = fSource->rowBytes();
SkColorFilter* colorFilter = fColorFilter;
SkXfermode* xfermode = fXfermode;
do {
const SkPMColor* tmp = src;
if (NULL != colorFilter) {
colorFilter->filterSpan(src, width, fBuffer);
tmp = fBuffer;
}
if (NULL != xfermode) {
xfermode->xfer32(dst, tmp, width, NULL);
} else {
fProc32(dst, tmp, width, fAlpha);
}
dst = (SK_RESTRICT uint32_t*)((char*)dst + dstRB);
src = (const SK_RESTRICT uint32_t*)((const char*)src + srcRB);
} while (--height != 0);
}
private:
typedef Sprite_D32_XferFilter INHERITED;
};
static void fillbuffer(SK_RESTRICT SkPMColor dst[],
const SK_RESTRICT SkPMColor16 src[], int count) {
SkASSERT(count > 0);
do {
*dst++ = SkPixel4444ToPixel32(*src++);
} while (--count != 0);
}
class Sprite_D32_S4444_XferFilter : public Sprite_D32_XferFilter {
public:
Sprite_D32_S4444_XferFilter(const SkBitmap& source, const SkPaint& paint)
: Sprite_D32_XferFilter(source, paint) {}
virtual void blitRect(int x, int y, int width, int height) {
SkASSERT(width > 0 && height > 0);
SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y);
const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft,
y - fTop);
unsigned dstRB = fDevice->rowBytes();
unsigned srcRB = fSource->rowBytes();
SK_RESTRICT SkPMColor* buffer = fBuffer;
SkColorFilter* colorFilter = fColorFilter;
SkXfermode* xfermode = fXfermode;
do {
fillbuffer(buffer, src, width);
if (NULL != colorFilter) {
colorFilter->filterSpan(buffer, width, buffer);
}
if (NULL != xfermode) {
xfermode->xfer32(dst, buffer, width, NULL);
} else {
fProc32(dst, buffer, width, fAlpha);
}
dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB);
src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB);
} while (--height != 0);
}
private:
typedef Sprite_D32_XferFilter INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
static void src_row(SK_RESTRICT SkPMColor dst[],
const SK_RESTRICT SkPMColor16 src[], int count) {
do {
*dst = SkPixel4444ToPixel32(*src);
src += 1;
dst += 1;
} while (--count != 0);
}
class Sprite_D32_S4444_Opaque : public SkSpriteBlitter {
public:
Sprite_D32_S4444_Opaque(const SkBitmap& source) : SkSpriteBlitter(source) {}
virtual void blitRect(int x, int y, int width, int height) {
SkASSERT(width > 0 && height > 0);
SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y);
const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft,
y - fTop);
unsigned dstRB = fDevice->rowBytes();
unsigned srcRB = fSource->rowBytes();
do {
src_row(dst, src, width);
dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB);
src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB);
} while (--height != 0);
}
};
static void srcover_row(SK_RESTRICT SkPMColor dst[],
const SK_RESTRICT SkPMColor16 src[], int count) {
do {
*dst = SkPMSrcOver(SkPixel4444ToPixel32(*src), *dst);
src += 1;
dst += 1;
} while (--count != 0);
}
class Sprite_D32_S4444 : public SkSpriteBlitter {
public:
Sprite_D32_S4444(const SkBitmap& source) : SkSpriteBlitter(source) {}
virtual void blitRect(int x, int y, int width, int height) {
SkASSERT(width > 0 && height > 0);
SK_RESTRICT SkPMColor* dst = fDevice->getAddr32(x, y);
const SK_RESTRICT SkPMColor16* src = fSource->getAddr16(x - fLeft,
y - fTop);
unsigned dstRB = fDevice->rowBytes();
unsigned srcRB = fSource->rowBytes();
do {
srcover_row(dst, src, width);
dst = (SK_RESTRICT SkPMColor*)((char*)dst + dstRB);
src = (const SK_RESTRICT SkPMColor16*)((const char*)src + srcRB);
} while (--height != 0);
}
};
///////////////////////////////////////////////////////////////////////////////
#include "SkTemplatesPriv.h"
SkSpriteBlitter* SkSpriteBlitter::ChooseD32(const SkBitmap& source,
const SkPaint& paint,
void* storage, size_t storageSize) {
if (paint.getMaskFilter() != NULL) {
return NULL;
}
U8CPU alpha = paint.getAlpha();
SkXfermode* xfermode = paint.getXfermode();
SkColorFilter* filter = paint.getColorFilter();
SkSpriteBlitter* blitter = NULL;
switch (source.getConfig()) {
case SkBitmap::kARGB_4444_Config:
if (alpha != 0xFF) {
return NULL; // we only have opaque sprites
}
if (xfermode || filter) {
SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_XferFilter,
storage, storageSize, (source, paint));
} else if (source.isOpaque()) {
SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444_Opaque,
storage, storageSize, (source));
} else {
SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S4444,
storage, storageSize, (source));
}
break;
case SkBitmap::kARGB_8888_Config:
if (xfermode || filter) {
if (255 == alpha) {
// this can handle xfermode or filter, but not alpha
SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32A_XferFilter,
storage, storageSize, (source, paint));
}
} else {
// this can handle alpha, but not xfermode or filter
SK_PLACEMENT_NEW_ARGS(blitter, Sprite_D32_S32,
storage, storageSize, (source, alpha));
}
break;
default:
break;
}
return blitter;
}
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