1 /* 2 * Copyright 2011 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 // Define NAME_WRAP(x) before including this header to perform name-wrapping 9 // E.g. for ARM NEON, defined it as 'x ## _neon' to ensure all important 10 // identifiers have a _neon suffix. 11 #ifndef NAME_WRAP 12 #error "Please define NAME_WRAP() before including this file" 13 #endif 14 15 // returns expanded * 5bits 16 static inline uint32_t Filter_565_Expanded(unsigned x, unsigned y, 17 uint32_t a00, uint32_t a01, 18 uint32_t a10, uint32_t a11) { 19 SkASSERT((unsigned)x <= 0xF); 20 SkASSERT((unsigned)y <= 0xF); 21 22 a00 = SkExpand_rgb_16(a00); 23 a01 = SkExpand_rgb_16(a01); 24 a10 = SkExpand_rgb_16(a10); 25 a11 = SkExpand_rgb_16(a11); 26 27 int xy = x * y >> 3; 28 return a00 * (32 - 2*y - 2*x + xy) + 29 a01 * (2*x - xy) + 30 a10 * (2*y - xy) + 31 a11 * xy; 32 } 33 34 // turn an expanded 565 * 5bits into SkPMColor 35 // g:11 | r:10 | x:1 | b:10 36 static inline SkPMColor SkExpanded_565_To_PMColor(uint32_t c) { 37 unsigned r = (c >> 13) & 0xFF; 38 unsigned g = (c >> 24); 39 unsigned b = (c >> 2) & 0xFF; 40 return SkPackARGB32(0xFF, r, g, b); 41 } 42 43 // returns answer in SkPMColor format 44 static inline SkPMColor Filter_4444_D32(unsigned x, unsigned y, 45 uint32_t a00, uint32_t a01, 46 uint32_t a10, uint32_t a11) { 47 SkASSERT((unsigned)x <= 0xF); 48 SkASSERT((unsigned)y <= 0xF); 49 50 a00 = SkExpand_4444(a00); 51 a01 = SkExpand_4444(a01); 52 a10 = SkExpand_4444(a10); 53 a11 = SkExpand_4444(a11); 54 55 int xy = x * y >> 4; 56 uint32_t result = a00 * (16 - y - x + xy) + 57 a01 * (x - xy) + 58 a10 * (y - xy) + 59 a11 * xy; 60 61 return SkCompact_8888(result); 62 } 63 64 static inline U8CPU Filter_8(unsigned x, unsigned y, 65 U8CPU a00, U8CPU a01, 66 U8CPU a10, U8CPU a11) { 67 SkASSERT((unsigned)x <= 0xF); 68 SkASSERT((unsigned)y <= 0xF); 69 70 int xy = x * y; 71 unsigned result = a00 * (256 - 16*y - 16*x + xy) + 72 a01 * (16*x - xy) + 73 a10 * (16*y - xy) + 74 a11 * xy; 75 76 return result >> 8; 77 } 78 79 // SRC == 8888 80 81 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_opaque)(x, y, a, b, c, d, dst) 82 83 #define MAKENAME(suffix) NAME_WRAP(S32_opaque_D32 ## suffix) 84 #define SRCTYPE SkPMColor 85 #define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \ 86 SkASSERT(state.fAlphaScale == 256) 87 #define RETURNDST(src) src 88 #define SRC_TO_FILTER(src) src 89 #include "SkBitmapProcState_sample.h" 90 91 #undef FILTER_PROC 92 #define FILTER_PROC(x, y, a, b, c, d, dst) NAME_WRAP(Filter_32_alpha)(x, y, a, b, c, d, dst, alphaScale) 93 94 #define MAKENAME(suffix) NAME_WRAP(S32_alpha_D32 ## suffix) 95 #define SRCTYPE SkPMColor 96 #define CHECKSTATE(state) SkASSERT(4 == state.fPixmap.info().bytesPerPixel()); \ 97 SkASSERT(state.fAlphaScale < 256) 98 #define PREAMBLE(state) unsigned alphaScale = state.fAlphaScale 99 #define RETURNDST(src) SkAlphaMulQ(src, alphaScale) 100 #define SRC_TO_FILTER(src) src 101 #include "SkBitmapProcState_sample.h" 102 103 #undef NAME_WRAP 104
