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Diffstat (limited to 'src/opts/SkPx_neon.h')
| -rw-r--r-- | src/opts/SkPx_neon.h | 188 |
1 files changed, 0 insertions, 188 deletions
diff --git a/src/opts/SkPx_neon.h b/src/opts/SkPx_neon.h deleted file mode 100644 index 23a0934ab2..0000000000 --- a/src/opts/SkPx_neon.h +++ /dev/null @@ -1,188 +0,0 @@ -/* - * Copyright 2015 Google Inc. - * - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - */ - -#ifndef SkPx_neon_DEFINED -#define SkPx_neon_DEFINED - -// When we have NEON, we like to work 8 pixels at a time. -// This lets us exploit vld4/vst4 and represent SkPx as planar uint8x8x4_t, -// Wide as planar uint16x8x4_t, and Alpha as a single uint8x8_t plane. - -namespace neon { - -struct SkPx { - static const int N = 8; - - uint8x8x4_t fVec; - SkPx(uint8x8x4_t vec) : fVec(vec) {} - - static SkPx Dup(uint32_t px) { return vld4_dup_u8((const uint8_t*)&px); } - static SkPx Load(const uint32_t* px) { return vld4_u8((const uint8_t*)px); } - static SkPx Load(const uint32_t* px, int n) { - SkASSERT(0 < n && n < 8); - uint8x8x4_t v = vld4_dup_u8((const uint8_t*)px); // n>=1, so start all lanes with pixel 0. - switch (n) { - case 7: v = vld4_lane_u8((const uint8_t*)(px+6), v, 6); // fall through - case 6: v = vld4_lane_u8((const uint8_t*)(px+5), v, 5); // fall through - case 5: v = vld4_lane_u8((const uint8_t*)(px+4), v, 4); // fall through - case 4: v = vld4_lane_u8((const uint8_t*)(px+3), v, 3); // fall through - case 3: v = vld4_lane_u8((const uint8_t*)(px+2), v, 2); // fall through - case 2: v = vld4_lane_u8((const uint8_t*)(px+1), v, 1); - } - return v; - } - - void store(uint32_t* px) const { vst4_u8((uint8_t*)px, fVec); } - void store(uint32_t* px, int n) const { - SkASSERT(0 < n && n < 8); - switch (n) { - case 7: vst4_lane_u8((uint8_t*)(px+6), fVec, 6); - case 6: vst4_lane_u8((uint8_t*)(px+5), fVec, 5); - case 5: vst4_lane_u8((uint8_t*)(px+4), fVec, 4); - case 4: vst4_lane_u8((uint8_t*)(px+3), fVec, 3); - case 3: vst4_lane_u8((uint8_t*)(px+2), fVec, 2); - case 2: vst4_lane_u8((uint8_t*)(px+1), fVec, 1); - case 1: vst4_lane_u8((uint8_t*)(px+0), fVec, 0); - } - } - - struct Alpha { - uint8x8_t fA; - Alpha(uint8x8_t a) : fA(a) {} - - static Alpha Dup(uint8_t a) { return vdup_n_u8(a); } - static Alpha Load(const uint8_t* a) { return vld1_u8(a); } - static Alpha Load(const uint8_t* a, int n) { - SkASSERT(0 < n && n < 8); - uint8x8_t v = vld1_dup_u8(a); // n>=1, so start all lanes with alpha 0. - switch (n) { - case 7: v = vld1_lane_u8(a+6, v, 6); // fall through - case 6: v = vld1_lane_u8(a+5, v, 5); // fall through - case 5: v = vld1_lane_u8(a+4, v, 4); // fall through - case 4: v = vld1_lane_u8(a+3, v, 3); // fall through - case 3: v = vld1_lane_u8(a+2, v, 2); // fall through - case 2: v = vld1_lane_u8(a+1, v, 1); - } - return v; - } - Alpha inv() const { return vsub_u8(vdup_n_u8(255), fA); } - }; - - struct Wide { - uint16x8x4_t fVec; - Wide(uint16x8x4_t vec) : fVec(vec) {} - - Wide operator+(const Wide& o) const { - return (uint16x8x4_t) {{ - vaddq_u16(fVec.val[0], o.fVec.val[0]), - vaddq_u16(fVec.val[1], o.fVec.val[1]), - vaddq_u16(fVec.val[2], o.fVec.val[2]), - vaddq_u16(fVec.val[3], o.fVec.val[3]), - }}; - } - Wide operator-(const Wide& o) const { - return (uint16x8x4_t) {{ - vsubq_u16(fVec.val[0], o.fVec.val[0]), - vsubq_u16(fVec.val[1], o.fVec.val[1]), - vsubq_u16(fVec.val[2], o.fVec.val[2]), - vsubq_u16(fVec.val[3], o.fVec.val[3]), - }}; - } - - template <int bits> Wide shl() const { - return (uint16x8x4_t) {{ - vshlq_n_u16(fVec.val[0], bits), - vshlq_n_u16(fVec.val[1], bits), - vshlq_n_u16(fVec.val[2], bits), - vshlq_n_u16(fVec.val[3], bits), - }}; - } - template <int bits> Wide shr() const { - return (uint16x8x4_t) {{ - vshrq_n_u16(fVec.val[0], bits), - vshrq_n_u16(fVec.val[1], bits), - vshrq_n_u16(fVec.val[2], bits), - vshrq_n_u16(fVec.val[3], bits), - }}; - } - - SkPx addNarrowHi(const SkPx& o) const { - return (uint8x8x4_t) {{ - vshrn_n_u16(vaddw_u8(fVec.val[0], o.fVec.val[0]), 8), - vshrn_n_u16(vaddw_u8(fVec.val[1], o.fVec.val[1]), 8), - vshrn_n_u16(vaddw_u8(fVec.val[2], o.fVec.val[2]), 8), - vshrn_n_u16(vaddw_u8(fVec.val[3], o.fVec.val[3]), 8), - }}; - } - }; - - Alpha alpha() const { return fVec.val[3]; } - - Wide widenLo() const { - return (uint16x8x4_t) {{ - vmovl_u8(fVec.val[0]), - vmovl_u8(fVec.val[1]), - vmovl_u8(fVec.val[2]), - vmovl_u8(fVec.val[3]), - }}; - } - // TODO: these two can probably be done faster. - Wide widenHi() const { return this->widenLo().shl<8>(); } - Wide widenLoHi() const { return this->widenLo() + this->widenHi(); } - - SkPx operator+(const SkPx& o) const { - return (uint8x8x4_t) {{ - vadd_u8(fVec.val[0], o.fVec.val[0]), - vadd_u8(fVec.val[1], o.fVec.val[1]), - vadd_u8(fVec.val[2], o.fVec.val[2]), - vadd_u8(fVec.val[3], o.fVec.val[3]), - }}; - } - SkPx operator-(const SkPx& o) const { - return (uint8x8x4_t) {{ - vsub_u8(fVec.val[0], o.fVec.val[0]), - vsub_u8(fVec.val[1], o.fVec.val[1]), - vsub_u8(fVec.val[2], o.fVec.val[2]), - vsub_u8(fVec.val[3], o.fVec.val[3]), - }}; - } - SkPx saturatedAdd(const SkPx& o) const { - return (uint8x8x4_t) {{ - vqadd_u8(fVec.val[0], o.fVec.val[0]), - vqadd_u8(fVec.val[1], o.fVec.val[1]), - vqadd_u8(fVec.val[2], o.fVec.val[2]), - vqadd_u8(fVec.val[3], o.fVec.val[3]), - }}; - } - - Wide operator*(const Alpha& a) const { - return (uint16x8x4_t) {{ - vmull_u8(fVec.val[0], a.fA), - vmull_u8(fVec.val[1], a.fA), - vmull_u8(fVec.val[2], a.fA), - vmull_u8(fVec.val[3], a.fA), - }}; - } - SkPx approxMulDiv255(const Alpha& a) const { - return (*this * a).addNarrowHi(*this); - } - - SkPx addAlpha(const Alpha& a) const { - return (uint8x8x4_t) {{ - fVec.val[0], - fVec.val[1], - fVec.val[2], - vadd_u8(fVec.val[3], a.fA), - }}; - } -}; - -} // namespace neon - -typedef neon::SkPx SkPx; - -#endif//SkPx_neon_DEFINED |