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/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
// Define NAME_WRAP(x) before including this header to perform name-wrapping
// E.g. for ARM NEON, defined it as 'x ## _neon' to ensure all important
// identifiers have a _neon suffix.
#ifndef NAME_WRAP
#error "Please define NAME_WRAP() before including this file"
#endif
// returns expanded * 5bits
static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y,
uint32_t a00, uint32_t a01,
uint32_t a10, uint32_t a11) {
SkASSERT((unsigned)x <= 0xF);
SkASSERT((unsigned)y <= 0xF);
a00 = SkExpand_rgb_16(a00);
a01 = SkExpand_rgb_16(a01);
a10 = SkExpand_rgb_16(a10);
a11 = SkExpand_rgb_16(a11);
int xy = x * y >> 3;
return a00 * (32 - 2*y - 2*x + xy) +
a01 * (2*x - xy) +
a10 * (2*y - xy) +
a11 * xy;
}
// turn an expanded 565 * 5bits into SkPMColor
// g:11 | r:10 | x:1 | b:10
static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) {
unsigned r = (c >> 13) & 0xFF;
unsigned g = (c >> 24);
unsigned b = (c >> 2) & 0xFF;
return SkPackARGB32(0xFF, r, g, b);
}
// returns answer in SkPMColor format
static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y,
uint32_t a00, uint32_t a01,
uint32_t a10, uint32_t a11) {
SkASSERT((unsigned)x <= 0xF);
SkASSERT((unsigned)y <= 0xF);
a00 = SkExpand_4444(a00);
a01 = SkExpand_4444(a01);
a10 = SkExpand_4444(a10);
a11 = SkExpand_4444(a11);
int xy = x * y >> 4;
uint32_t result = a00 * (16 - y - x + xy) +
a01 * (x - xy) +
a10 * (y - xy) +
a11 * xy;
return SkCompact_8888(result);
}
static inline U8CPU Filter_8(unsigned x, unsigned y,
U8CPU a00, U8CPU a01,
U8CPU a10, U8CPU a11) {
SkASSERT((unsigned)x <= 0xF);
SkASSERT((unsigned)y <= 0xF);
int xy = x * y;
unsigned result = a00 * (256 - 16*y - 16*x + xy) +
a01 * (16*x - xy) +
a10 * (16*y - xy) +
a11 * xy;
return result >> 8;
}
/*****************************************************************************
*
* D32 functions
*
*/
// SRC == 8888
#define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
#define MAKENAME(suffix) NAME_WRAP(S32_opaque_D32 ## suffix)
#define SRCTYPE SkPMColor
#define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \
SkASSERT(state.fAlphaScale == 256)
#define RETURNDST(src) src
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale)
#define MAKENAME(suffix) NAME_WRAP(S32_alpha_D32 ## suffix)
#define SRCTYPE SkPMColor
#define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \
SkASSERT(state.fAlphaScale < 256)
#define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale
#define RETURNDST(src) SkAlphaMulQ(src, alphaScale)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
// SRC == 565
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) \
do { \
uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \
*(dst) = SkExpanded_565_To_PMColor(tmp); \
} while (0)
#define MAKENAME(suffix) NAME_WRAP(S16_opaque_D32 ## suffix)
#define SRCTYPE uint16_t
#define CHECKSTATE(state) SkASSERT(kRGB_565_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale == 256)
#define RETURNDST(src) SkPixel16ToPixel32(src)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) \
do { \
uint32_t tmp = Filter_565_Expanded(x, y, a, b, c, d); \
*(dst) = SkAlphaMulQ(SkExpanded_565_To_PMColor(tmp), alphaScale); \
} while (0)
#define MAKENAME(suffix) NAME_WRAP(S16_alpha_D32 ## suffix)
#define SRCTYPE uint16_t
#define CHECKSTATE(state) SkASSERT(kRGB_565_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale < 256)
#define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale
#define RETURNDST(src) SkAlphaMulQ(SkPixel16ToPixel32(src), alphaScale)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
// SRC == Index8
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
#define MAKENAME(suffix) NAME_WRAP(SI8_opaque_D32 ## suffix)
#define SRCTYPE uint8_t
#define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale == 256)
#define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors()
#define RETURNDST(src) table[src]
#define SRC_TO_FILTER(src) table[src]
#define POSTAMBLE(state)
#include "SkBitmapProcState_sample.h"
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale)
#define MAKENAME(suffix) NAME_WRAP(SI8_alpha_D32 ## suffix)
#define SRCTYPE uint8_t
#define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale < 256)
#define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale; \
const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors()
#define RETURNDST(src) SkAlphaMulQ(table[src], alphaScale)
#define SRC_TO_FILTER(src) table[src]
#define POSTAMBLE(state)
#include "SkBitmapProcState_sample.h"
// SRC == 4444
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) *(dst) = Filter_4444_D32(x, y, a, b, c, d)
#define MAKENAME(suffix) NAME_WRAP(S4444_opaque_D32 ## suffix)
#define SRCTYPE SkPMColor16
#define CHECKSTATE(state) SkASSERT(kARGB_4444_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale == 256)
#define RETURNDST(src) SkPixel4444ToPixel32(src)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) \
do { \
uint32_t tmp = Filter_4444_D32(x, y, a, b, c, d); \
*(dst) = SkAlphaMulQ(tmp, alphaScale); \
} while (0)
#define MAKENAME(suffix) NAME_WRAP(S4444_alpha_D32 ## suffix)
#define SRCTYPE SkPMColor16
#define CHECKSTATE(state) SkASSERT(kARGB_4444_SkColorType == state.fPixmap.colorType()); \
SkASSERT(state.fAlphaScale < 256)
#define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale
#define RETURNDST(src) SkAlphaMulQ(SkPixel4444ToPixel32(src), alphaScale)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
// SRC == A8
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) \
do { \
unsigned tmp = Filter_8(x, y, a, b, c, d); \
*(dst) = SkAlphaMulQ(pmColor, SkAlpha255To256(tmp)); \
} while (0)
#define MAKENAME(suffix) NAME_WRAP(SA8_alpha_D32 ## suffix)
#define SRCTYPE uint8_t
#define CHECKSTATE(state) SkASSERT(kAlpha_8_SkColorType == state.fPixmap.colorType());
#define PREAMBLE(state) const SkPMColor pmColor = state.fPaintPMColor;
#define RETURNDST(src) SkAlphaMulQ(pmColor, SkAlpha255To256(src))
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
// SRC == Gray8
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) \
do { \
unsigned tmp = Filter_8(x, y, a, b, c, d); \
SkPMColor color = SkPackARGB32(0xFF, tmp, tmp, tmp); \
*(dst) = SkAlphaMulQ(color, alphaScale); \
} while (0)
#define MAKENAME(suffix) NAME_WRAP(SG8_alpha_D32 ## suffix)
#define SRCTYPE uint8_t
#define CHECKSTATE(state) SkASSERT(kGray_8_SkColorType == state.fPixmap.colorType());
#define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale
#define RETURNDST(src) SkAlphaMulQ(SkPackARGB32(0xFF, src, src, src), alphaScale)
#define SRC_TO_FILTER(src) src
#include "SkBitmapProcState_sample.h"
#define TILEX_PROCF(fx, max) SkClampMax((fx) >> 16, max)
#define TILEY_PROCF(fy, max) SkClampMax((fy) >> 16, max)
#define EXTRACT_LOW_BITS(v, max) (((v) >> 12) & 0xF)
#undef FILTER_PROC
#define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst)
#define MAKENAME(suffix) NAME_WRAP(Clamp_SI8_opaque_D32 ## suffix)
#define SRCTYPE uint8_t
#define CHECKSTATE(state) SkASSERT(kIndex_8_SkColorType == state.fPixmap.colorType())
#define PREAMBLE(state) const SkPMColor* SK_RESTRICT table = state.fPixmap.ctable()->readColors()
#define SRC_TO_FILTER(src) table[src]
#define POSTAMBLE(state)
#include "SkBitmapProcState_shaderproc.h"
#undef NAME_WRAP
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