mtklein | d2ffd36 | 2015-05-12 06:11:21 -0700 | [diff] [blame^] | 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 | } |