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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;
}
// 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"
#undef NAME_WRAP
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