| /* |
| * Copyright 2015 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| namespace { // See Sk4px.h |
| |
| inline Sk4px Sk4px::DupPMColor(SkPMColor px) { return Sk16b((uint8x16_t)vdupq_n_u32(px)); } |
| |
| inline Sk4px Sk4px::Load4(const SkPMColor px[4]) { |
| return Sk16b((uint8x16_t)vld1q_u32(px)); |
| } |
| inline Sk4px Sk4px::Load2(const SkPMColor px[2]) { |
| uint32x2_t px2 = vld1_u32(px); |
| return Sk16b((uint8x16_t)vcombine_u32(px2, px2)); |
| } |
| inline Sk4px Sk4px::Load1(const SkPMColor px[1]) { |
| return Sk16b((uint8x16_t)vdupq_n_u32(*px)); |
| } |
| |
| inline void Sk4px::store4(SkPMColor px[4]) const { |
| vst1q_u32(px, (uint32x4_t)this->fVec); |
| } |
| inline void Sk4px::store2(SkPMColor px[2]) const { |
| vst1_u32(px, (uint32x2_t)vget_low_u8(this->fVec)); |
| } |
| inline void Sk4px::store1(SkPMColor px[1]) const { |
| vst1q_lane_u32(px, (uint32x4_t)this->fVec, 0); |
| } |
| |
| inline Sk4px::Wide Sk4px::widenLo() const { |
| return Sk16h(vmovl_u8(vget_low_u8 (this->fVec)), |
| vmovl_u8(vget_high_u8(this->fVec))); |
| } |
| |
| inline Sk4px::Wide Sk4px::widenHi() const { |
| return Sk16h(vshll_n_u8(vget_low_u8 (this->fVec), 8), |
| vshll_n_u8(vget_high_u8(this->fVec), 8)); |
| } |
| |
| inline Sk4px::Wide Sk4px::widenLoHi() const { |
| auto zipped = vzipq_u8(this->fVec, this->fVec); |
| return Sk16h((uint16x8_t)zipped.val[0], |
| (uint16x8_t)zipped.val[1]); |
| } |
| |
| inline Sk4px::Wide Sk4px::mulWiden(const Sk16b& other) const { |
| return Sk16h(vmull_u8(vget_low_u8 (this->fVec), vget_low_u8 (other.fVec)), |
| vmull_u8(vget_high_u8(this->fVec), vget_high_u8(other.fVec))); |
| } |
| |
| inline Sk4px Sk4px::Wide::addNarrowHi(const Sk16h& other) const { |
| const Sk4px::Wide o(other); // Should be no code, but allows us to access fLo, fHi. |
| return Sk16b(vcombine_u8(vaddhn_u16(this->fLo.fVec, o.fLo.fVec), |
| vaddhn_u16(this->fHi.fVec, o.fHi.fVec))); |
| } |
| |
| inline Sk4px Sk4px::Wide::div255() const { |
| // Calculated as (x + (x+128)>>8 +128) >> 8. The 'r' in each instruction provides each +128. |
| return Sk16b(vcombine_u8(vraddhn_u16(this->fLo.fVec, vrshrq_n_u16(this->fLo.fVec, 8)), |
| vraddhn_u16(this->fHi.fVec, vrshrq_n_u16(this->fHi.fVec, 8)))); |
| } |
| |
| inline Sk4px Sk4px::alphas() const { |
| auto as = vshrq_n_u32((uint32x4_t)fVec, SK_A32_SHIFT); // ___3 ___2 ___1 ___0 |
| return Sk16b((uint8x16_t)vmulq_n_u32(as, 0x01010101)); // 3333 2222 1111 0000 |
| } |
| |
| inline Sk4px Sk4px::Load4Alphas(const SkAlpha a[4]) { |
| uint8x16_t a8 = vdupq_n_u8(0); // ____ ____ ____ ____ |
| a8 = vld1q_lane_u8(a+0, a8, 0); // ____ ____ ____ ___0 |
| a8 = vld1q_lane_u8(a+1, a8, 4); // ____ ____ ___1 ___0 |
| a8 = vld1q_lane_u8(a+2, a8, 8); // ____ ___2 ___1 ___0 |
| a8 = vld1q_lane_u8(a+3, a8, 12); // ___3 ___2 ___1 ___0 |
| auto a32 = (uint32x4_t)a8; // |
| return Sk16b((uint8x16_t)vmulq_n_u32(a32, 0x01010101)); // 3333 2222 1111 0000 |
| } |
| |
| inline Sk4px Sk4px::Load2Alphas(const SkAlpha a[2]) { |
| uint8x16_t a8 = vdupq_n_u8(0); // ____ ____ ____ ____ |
| a8 = vld1q_lane_u8(a+0, a8, 0); // ____ ____ ____ ___0 |
| a8 = vld1q_lane_u8(a+1, a8, 4); // ____ ____ ___1 ___0 |
| auto a32 = (uint32x4_t)a8; // |
| return Sk16b((uint8x16_t)vmulq_n_u32(a32, 0x01010101)); // ____ ____ 1111 0000 |
| } |
| |
| inline Sk4px Sk4px::zeroColors() const { |
| return Sk16b(vandq_u8(this->fVec, (uint8x16_t)vdupq_n_u32(0xFF << SK_A32_SHIFT))); |
| } |
| |
| inline Sk4px Sk4px::zeroAlphas() const { |
| // vbic(a,b) == a & ~b |
| return Sk16b(vbicq_u8(this->fVec, (uint8x16_t)vdupq_n_u32(0xFF << SK_A32_SHIFT))); |
| } |
| |
| } // namespace |
| |
