1 /* 2 * Copyright 2015 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 #include "SkUtils.h" 9 10 static_assert(sizeof(Sk4px) == 16, "This file uses memcpy / sk_memset32, so exact size matters."); 11 12 inline Sk4px::Sk4px(SkPMColor px) { 13 sk_memset32((uint32_t*)this, px, 4); 14 } 15 16 inline Sk4px Sk4px::Load4(const SkPMColor px[4]) { 17 Sk4px px4 = Sk16b(); 18 memcpy(&px4, px, 16); 19 return px4; 20 } 21 22 inline Sk4px Sk4px::Load2(const SkPMColor px[2]) { 23 Sk4px px2 = Sk16b(); 24 memcpy(&px2, px, 8); 25 return px2; 26 } 27 28 inline Sk4px Sk4px::Load1(const SkPMColor px[1]) { 29 Sk4px px1 = Sk16b(); 30 memcpy(&px1, px, 4); 31 return px1; 32 } 33 34 inline void Sk4px::store4(SkPMColor px[4]) const { memcpy(px, this, 16); } 35 inline void Sk4px::store2(SkPMColor px[2]) const { memcpy(px, this, 8); } 36 inline void Sk4px::store1(SkPMColor px[1]) const { memcpy(px, this, 4); } 37 38 inline Sk4px::Wide Sk4px::widenLo() const { 39 return Sk16h(this->kth< 0>(), this->kth< 1>(), this->kth< 2>(), this->kth< 3>(), 40 this->kth< 4>(), this->kth< 5>(), this->kth< 6>(), this->kth< 7>(), 41 this->kth< 8>(), this->kth< 9>(), this->kth<10>(), this->kth<11>(), 42 this->kth<12>(), this->kth<13>(), this->kth<14>(), this->kth<15>()); 43 } 44 45 inline Sk4px::Wide Sk4px::widenHi() const { return this->widenLo() << 8; } 46 47 inline Sk4px::Wide Sk4px::mulWiden(const Sk16b& other) const { 48 return this->widenLo() * Sk4px(other).widenLo(); 49 } 50 51 inline Sk4px Sk4px::Wide::addNarrowHi(const Sk16h& other) const { 52 Sk4px::Wide r = (*this + other) >> 8; 53 return Sk16b(r.kth< 0>(), r.kth< 1>(), r.kth< 2>(), r.kth< 3>(), 54 r.kth< 4>(), r.kth< 5>(), r.kth< 6>(), r.kth< 7>(), 55 r.kth< 8>(), r.kth< 9>(), r.kth<10>(), r.kth<11>(), 56 r.kth<12>(), r.kth<13>(), r.kth<14>(), r.kth<15>()); 57 } 58 59 inline Sk4px Sk4px::alphas() const { 60 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian."); 61 return Sk16b(this->kth< 3>(), this->kth< 3>(), this->kth< 3>(), this->kth< 3>(), 62 this->kth< 7>(), this->kth< 7>(), this->kth< 7>(), this->kth< 7>(), 63 this->kth<11>(), this->kth<11>(), this->kth<11>(), this->kth<11>(), 64 this->kth<15>(), this->kth<15>(), this->kth<15>(), this->kth<15>()); 65 } 66 67 inline Sk4px Sk4px::Load4Alphas(const SkAlpha a[4]) { 68 return Sk16b(a[0], a[0], a[0], a[0], 69 a[1], a[1], a[1], a[1], 70 a[2], a[2], a[2], a[2], 71 a[3], a[3], a[3], a[3]); 72 } 73 74 inline Sk4px Sk4px::Load2Alphas(const SkAlpha a[2]) { 75 return Sk16b(a[0], a[0], a[0], a[0], 76 a[1], a[1], a[1], a[1], 77 0,0,0,0, 78 0,0,0,0); 79 } 80 81 inline Sk4px Sk4px::zeroAlphas() const { 82 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian."); 83 return Sk16b(this->kth< 0>(), this->kth< 1>(), this->kth< 2>(), 0, 84 this->kth< 4>(), this->kth< 5>(), this->kth< 6>(), 0, 85 this->kth< 8>(), this->kth< 9>(), this->kth<10>(), 0, 86 this->kth<12>(), this->kth<13>(), this->kth<14>(), 0); 87 } 88 89 inline Sk4px Sk4px::zeroColors() const { 90 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian."); 91 return Sk16b(0,0,0, this->kth< 3>(), 92 0,0,0, this->kth< 7>(), 93 0,0,0, this->kth<11>(), 94 0,0,0, this->kth<15>()); 95 } 96 97
