| /* |
| * Copyright (c) 2016, Alliance for Open Media. All rights reserved |
| * |
| * This source code is subject to the terms of the BSD 2 Clause License and |
| * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License |
| * was not distributed with this source code in the LICENSE file, you can |
| * obtain it at www.aomedia.org/license/software. If the Alliance for Open |
| * Media Patent License 1.0 was not distributed with this source code in the |
| * PATENTS file, you can obtain it at www.aomedia.org/license/patent. |
| */ |
| |
| #include "aom_dsp/aom_simd.h" |
| #include "aom_dsp/arm/mem_neon.h" |
| |
| #define SIMD_FUNC(name) name##_neon |
| #include "av1/common/cdef_block_simd.h" |
| |
| void cdef_copy_rect8_8bit_to_16bit_neon(uint16_t *dst, int dstride, |
| const uint8_t *src, int sstride, |
| int width, int height) { |
| int j; |
| for (int i = 0; i < height; i++) { |
| for (j = 0; j < (width & ~0x7); j += 8) { |
| v64 row = v64_load_unaligned(&src[i * sstride + j]); |
| v128_store_unaligned(&dst[i * dstride + j], v128_unpack_u8_s16(row)); |
| } |
| for (; j < width; j++) { |
| dst[i * dstride + j] = src[i * sstride + j]; |
| } |
| } |
| } |
| |
| static INLINE int16x8_t v128_from_64_neon(int64_t a, int64_t b) { |
| return vreinterpretq_s16_s64(vcombine_s64(vcreate_s64(a), vcreate_s64(b))); |
| } |
| |
| #define SHL_HIGH_NEON(n) \ |
| static INLINE int16x8_t v128_shl_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| 0, vget_lane_u64(vshl_n_u64(vreinterpret_u64_s64(vget_low_s64(a_s64)), \ |
| (n - 8) * 8), \ |
| 0)); \ |
| } |
| |
| #define SHL_NEON(n) \ |
| static INLINE int16x8_t v128_shl_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| 0, vget_lane_u64(vreinterpret_u64_s64(vget_low_s64(a_s64)), 0)); \ |
| } |
| |
| #define SHL_LOW_NEON(n) \ |
| static INLINE int16x8_t v128_shl_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| vget_lane_u64( \ |
| vshl_n_u64(vreinterpret_u64_s64(vget_low_s64(a_s64)), n * 8), 0), \ |
| vget_lane_u64( \ |
| vorr_u64( \ |
| vshl_n_u64(vreinterpret_u64_s64(vget_high_s64(a_s64)), n * 8), \ |
| vshr_n_u64(vreinterpret_u64_s64(vget_low_s64(a_s64)), \ |
| (8 - n) * 8)), \ |
| 0)); \ |
| } |
| |
| SHL_HIGH_NEON(14) |
| SHL_HIGH_NEON(12) |
| SHL_HIGH_NEON(10) |
| SHL_NEON(8) |
| SHL_LOW_NEON(6) |
| SHL_LOW_NEON(4) |
| SHL_LOW_NEON(2) |
| |
| #define v128_shl_n_byte_neon(a, n) v128_shl_##n##_byte_neon(a) |
| |
| #define SHR_HIGH_NEON(n) \ |
| static INLINE int16x8_t v128_shr_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| vget_lane_u64(vshr_n_u64(vreinterpret_u64_s64(vget_high_s64(a_s64)), \ |
| (n - 8) * 8), \ |
| 0), \ |
| 0); \ |
| } |
| |
| #define SHR_NEON(n) \ |
| static INLINE int16x8_t v128_shr_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| vget_lane_u64(vreinterpret_u64_s64(vget_high_s64(a_s64)), 0), 0); \ |
| } |
| |
| #define SHR_LOW_NEON(n) \ |
| static INLINE int16x8_t v128_shr_##n##_byte_neon(int16x8_t a) { \ |
| int64x2_t a_s64 = vreinterpretq_s64_s16(a); \ |
| return v128_from_64_neon( \ |
| vget_lane_u64( \ |
| vorr_u64( \ |
| vshr_n_u64(vreinterpret_u64_s64(vget_low_s64(a_s64)), n * 8), \ |
| vshl_n_u64(vreinterpret_u64_s64(vget_high_s64(a_s64)), \ |
| (8 - n) * 8)), \ |
| 0), \ |
| vget_lane_u64( \ |
| vshr_n_u64(vreinterpret_u64_s64(vget_high_s64(a_s64)), n * 8), \ |
| 0)); \ |
| } |
| |
| SHR_HIGH_NEON(14) |
| SHR_HIGH_NEON(12) |
| SHR_HIGH_NEON(10) |
| SHR_NEON(8) |
| SHR_LOW_NEON(6) |
| SHR_LOW_NEON(4) |
| SHR_LOW_NEON(2) |
| |
| #define v128_shr_n_byte_neon(a, n) v128_shr_##n##_byte_neon(a) |
| |
| static INLINE uint32x4_t v128_madd_s16_neon(int16x8_t a, int16x8_t b) { |
| uint32x4_t t1 = |
| vreinterpretq_u32_s32(vmull_s16(vget_low_s16(a), vget_low_s16(b))); |
| uint32x4_t t2 = |
| vreinterpretq_u32_s32(vmull_s16(vget_high_s16(a), vget_high_s16(b))); |
| #if AOM_ARCH_AARCH64 |
| return vpaddq_u32(t1, t2); |
| #else |
| return vcombine_u32(vpadd_u32(vget_low_u32(t1), vget_high_u32(t1)), |
| vpadd_u32(vget_low_u32(t2), vget_high_u32(t2))); |
| #endif |
| } |
| |
| // partial A is a 16-bit vector of the form: |
| // [x8 x7 x6 x5 x4 x3 x2 x1] and partial B has the form: |
| // [0 y1 y2 y3 y4 y5 y6 y7]. |
| // This function computes (x1^2+y1^2)*C1 + (x2^2+y2^2)*C2 + ... |
| // (x7^2+y2^7)*C7 + (x8^2+0^2)*C8 where the C1..C8 constants are in const1 |
| // and const2. |
| static INLINE uint32x4_t fold_mul_and_sum_neon(int16x8_t partiala, |
| int16x8_t partialb, |
| uint32x4_t const1, |
| uint32x4_t const2) { |
| int16x8_t tmp; |
| // Reverse partial B. |
| uint8x16_t pattern = vreinterpretq_u8_u64( |
| vcombine_u64(vcreate_u64((uint64_t)0x07060908 << 32 | 0x0b0a0d0c), |
| vcreate_u64((uint64_t)0x0f0e0100 << 32 | 0x03020504))); |
| |
| #if AOM_ARCH_AARCH64 |
| partialb = |
| vreinterpretq_s16_s8(vqtbl1q_s8(vreinterpretq_s8_s16(partialb), pattern)); |
| #else |
| int8x8x2_t p = { { vget_low_s8(vreinterpretq_s8_s16(partialb)), |
| vget_high_s8(vreinterpretq_s8_s16(partialb)) } }; |
| int8x8_t shuffle_hi = vtbl2_s8(p, vget_high_s8(vreinterpretq_s8_u8(pattern))); |
| int8x8_t shuffle_lo = vtbl2_s8(p, vget_low_s8(vreinterpretq_s8_u8(pattern))); |
| partialb = vreinterpretq_s16_s8(vcombine_s8(shuffle_lo, shuffle_hi)); |
| #endif |
| |
| // Interleave the x and y values of identical indices and pair x8 with 0. |
| tmp = partiala; |
| partiala = vzipq_s16(partiala, partialb).val[0]; |
| partialb = vzipq_s16(tmp, partialb).val[1]; |
| // Square and add the corresponding x and y values. |
| uint32x4_t partiala_u32 = v128_madd_s16_neon(partiala, partiala); |
| uint32x4_t partialb_u32 = v128_madd_s16_neon(partialb, partialb); |
| |
| // Multiply by constant. |
| partiala_u32 = vmulq_u32(partiala_u32, const1); |
| partialb_u32 = vmulq_u32(partialb_u32, const2); |
| |
| // Sum all results. |
| partiala_u32 = vaddq_u32(partiala_u32, partialb_u32); |
| return partiala_u32; |
| } |
| |
| static INLINE uint64x2_t ziplo_u64(uint32x4_t a, uint32x4_t b) { |
| return vcombine_u64(vget_low_u64(vreinterpretq_u64_u32(a)), |
| vget_low_u64(vreinterpretq_u64_u32(b))); |
| } |
| |
| static INLINE uint64x2_t ziphi_u64(uint32x4_t a, uint32x4_t b) { |
| return vcombine_u64(vget_high_u64(vreinterpretq_u64_u32(a)), |
| vget_high_u64(vreinterpretq_u64_u32(b))); |
| } |
| |
| static INLINE uint32x4_t hsum4_neon(uint32x4_t x0, uint32x4_t x1, uint32x4_t x2, |
| uint32x4_t x3) { |
| uint32x4_t t0, t1, t2, t3; |
| t0 = vzipq_u32(x0, x1).val[0]; |
| t1 = vzipq_u32(x2, x3).val[0]; |
| t2 = vzipq_u32(x0, x1).val[1]; |
| t3 = vzipq_u32(x2, x3).val[1]; |
| x0 = vreinterpretq_u32_u64(ziplo_u64(t0, t1)); |
| x1 = vreinterpretq_u32_u64(ziphi_u64(t0, t1)); |
| x2 = vreinterpretq_u32_u64(ziplo_u64(t2, t3)); |
| x3 = vreinterpretq_u32_u64(ziphi_u64(t2, t3)); |
| return vaddq_u32(vaddq_u32(x0, x1), vaddq_u32(x2, x3)); |
| } |
| |
| static INLINE uint32x4_t compute_directions_neon(int16x8_t lines[8], |
| uint32_t cost[4]) { |
| int16x8_t partial4a, partial4b, partial5a, partial5b, partial6, partial7a, |
| partial7b; |
| int16x8_t tmp; |
| |
| // Partial sums for lines 0 and 1. |
| partial4a = v128_shl_n_byte_neon(lines[0], 14); |
| partial4b = v128_shr_n_byte_neon(lines[0], 2); |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[1], 12)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[1], 4)); |
| tmp = vaddq_s16(lines[0], lines[1]); |
| partial5a = v128_shl_n_byte_neon(tmp, 10); |
| partial5b = v128_shr_n_byte_neon(tmp, 6); |
| partial7a = v128_shl_n_byte_neon(tmp, 4); |
| partial7b = v128_shr_n_byte_neon(tmp, 12); |
| partial6 = tmp; |
| |
| // Partial sums for lines 2 and 3. |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[2], 10)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[2], 6)); |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[3], 8)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[3], 8)); |
| tmp = vaddq_s16(lines[2], lines[3]); |
| partial5a = vaddq_s16(partial5a, v128_shl_n_byte_neon(tmp, 8)); |
| partial5b = vaddq_s16(partial5b, v128_shr_n_byte_neon(tmp, 8)); |
| partial7a = vaddq_s16(partial7a, v128_shl_n_byte_neon(tmp, 6)); |
| partial7b = vaddq_s16(partial7b, v128_shr_n_byte_neon(tmp, 10)); |
| partial6 = vaddq_s16(partial6, tmp); |
| |
| // Partial sums for lines 4 and 5. |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[4], 6)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[4], 10)); |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[5], 4)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[5], 12)); |
| tmp = vaddq_s16(lines[4], lines[5]); |
| partial5a = vaddq_s16(partial5a, v128_shl_n_byte_neon(tmp, 6)); |
| partial5b = vaddq_s16(partial5b, v128_shr_n_byte_neon(tmp, 10)); |
| partial7a = vaddq_s16(partial7a, v128_shl_n_byte_neon(tmp, 8)); |
| partial7b = vaddq_s16(partial7b, v128_shr_n_byte_neon(tmp, 8)); |
| partial6 = vaddq_s16(partial6, tmp); |
| |
| // Partial sums for lines 6 and 7. |
| partial4a = vaddq_s16(partial4a, v128_shl_n_byte_neon(lines[6], 2)); |
| partial4b = vaddq_s16(partial4b, v128_shr_n_byte_neon(lines[6], 14)); |
| partial4a = vaddq_s16(partial4a, lines[7]); |
| tmp = vaddq_s16(lines[6], lines[7]); |
| partial5a = vaddq_s16(partial5a, v128_shl_n_byte_neon(tmp, 4)); |
| partial5b = vaddq_s16(partial5b, v128_shr_n_byte_neon(tmp, 12)); |
| partial7a = vaddq_s16(partial7a, v128_shl_n_byte_neon(tmp, 10)); |
| partial7b = vaddq_s16(partial7b, v128_shr_n_byte_neon(tmp, 6)); |
| partial6 = vaddq_s16(partial6, tmp); |
| |
| uint32x4_t const0 = vreinterpretq_u32_u64( |
| vcombine_u64(vcreate_u64((uint64_t)420 << 32 | 840), |
| vcreate_u64((uint64_t)210 << 32 | 280))); |
| uint32x4_t const1 = vreinterpretq_u32_u64( |
| vcombine_u64(vcreate_u64((uint64_t)140 << 32 | 168), |
| vcreate_u64((uint64_t)105 << 32 | 120))); |
| uint32x4_t const2 = vreinterpretq_u32_u64( |
| vcombine_u64(vcreate_u64(0), vcreate_u64((uint64_t)210 << 32 | 420))); |
| uint32x4_t const3 = vreinterpretq_u32_u64( |
| vcombine_u64(vcreate_u64((uint64_t)105 << 32 | 140), |
| vcreate_u64((uint64_t)105 << 32 | 105))); |
| |
| // Compute costs in terms of partial sums. |
| uint32x4_t partial4a_u32 = |
| fold_mul_and_sum_neon(partial4a, partial4b, const0, const1); |
| uint32x4_t partial7a_u32 = |
| fold_mul_and_sum_neon(partial7a, partial7b, const2, const3); |
| uint32x4_t partial5a_u32 = |
| fold_mul_and_sum_neon(partial5a, partial5b, const2, const3); |
| uint32x4_t partial6_u32 = v128_madd_s16_neon(partial6, partial6); |
| partial6_u32 = vmulq_u32(partial6_u32, vdupq_n_u32(105)); |
| |
| partial4a_u32 = |
| hsum4_neon(partial4a_u32, partial5a_u32, partial6_u32, partial7a_u32); |
| vst1q_u32(cost, partial4a_u32); |
| return partial4a_u32; |
| } |
| |
| static INLINE int64x2_t ziplo_s64(int32x4_t a, int32x4_t b) { |
| return vcombine_s64(vget_low_s64(vreinterpretq_s64_s32(a)), |
| vget_low_s64(vreinterpretq_s64_s32(b))); |
| } |
| |
| static INLINE int64x2_t ziphi_s64(int32x4_t a, int32x4_t b) { |
| return vcombine_s64(vget_high_s64(vreinterpretq_s64_s32(a)), |
| vget_high_s64(vreinterpretq_s64_s32(b))); |
| } |
| |
| // Transpose and reverse the order of the lines -- equivalent to a 90-degree |
| // counter-clockwise rotation of the pixels. |
| static INLINE void array_reverse_transpose_8x8_neon(int16x8_t *in, |
| int16x8_t *res) { |
| const int32x4_t tr0_0 = vreinterpretq_s32_s16(vzipq_s16(in[0], in[1]).val[0]); |
| const int32x4_t tr0_1 = vreinterpretq_s32_s16(vzipq_s16(in[2], in[3]).val[0]); |
| const int32x4_t tr0_2 = vreinterpretq_s32_s16(vzipq_s16(in[0], in[1]).val[1]); |
| const int32x4_t tr0_3 = vreinterpretq_s32_s16(vzipq_s16(in[2], in[3]).val[1]); |
| const int32x4_t tr0_4 = vreinterpretq_s32_s16(vzipq_s16(in[4], in[5]).val[0]); |
| const int32x4_t tr0_5 = vreinterpretq_s32_s16(vzipq_s16(in[6], in[7]).val[0]); |
| const int32x4_t tr0_6 = vreinterpretq_s32_s16(vzipq_s16(in[4], in[5]).val[1]); |
| const int32x4_t tr0_7 = vreinterpretq_s32_s16(vzipq_s16(in[6], in[7]).val[1]); |
| |
| const int32x4_t tr1_0 = vzipq_s32(tr0_0, tr0_1).val[0]; |
| const int32x4_t tr1_1 = vzipq_s32(tr0_4, tr0_5).val[0]; |
| const int32x4_t tr1_2 = vzipq_s32(tr0_0, tr0_1).val[1]; |
| const int32x4_t tr1_3 = vzipq_s32(tr0_4, tr0_5).val[1]; |
| const int32x4_t tr1_4 = vzipq_s32(tr0_2, tr0_3).val[0]; |
| const int32x4_t tr1_5 = vzipq_s32(tr0_6, tr0_7).val[0]; |
| const int32x4_t tr1_6 = vzipq_s32(tr0_2, tr0_3).val[1]; |
| const int32x4_t tr1_7 = vzipq_s32(tr0_6, tr0_7).val[1]; |
| |
| res[7] = vreinterpretq_s16_s64(ziplo_s64(tr1_0, tr1_1)); |
| res[6] = vreinterpretq_s16_s64(ziphi_s64(tr1_0, tr1_1)); |
| res[5] = vreinterpretq_s16_s64(ziplo_s64(tr1_2, tr1_3)); |
| res[4] = vreinterpretq_s16_s64(ziphi_s64(tr1_2, tr1_3)); |
| res[3] = vreinterpretq_s16_s64(ziplo_s64(tr1_4, tr1_5)); |
| res[2] = vreinterpretq_s16_s64(ziphi_s64(tr1_4, tr1_5)); |
| res[1] = vreinterpretq_s16_s64(ziplo_s64(tr1_6, tr1_7)); |
| res[0] = vreinterpretq_s16_s64(ziphi_s64(tr1_6, tr1_7)); |
| } |
| |
| static INLINE uint32_t compute_best_dir(uint8x16_t a) { |
| uint8x16_t idx = |
| vandq_u8(a, vreinterpretq_u8_u64(vdupq_n_u64(0x8040201008040201ULL))); |
| #if AOM_ARCH_AARCH64 |
| return vaddv_u8(vget_low_u8(idx)) + (vaddv_u8(vget_high_u8(idx)) << 8); |
| #else |
| uint64x2_t m = vpaddlq_u32(vpaddlq_u16(vpaddlq_u8(idx))); |
| uint8x16_t s = vreinterpretq_u8_u64(m); |
| return vget_lane_u32( |
| vreinterpret_u32_u8(vzip_u8(vget_low_u8(s), vget_high_u8(s)).val[0]), 0); |
| #endif |
| } |
| |
| int cdef_find_dir_neon(const uint16_t *img, int stride, int32_t *var, |
| int coeff_shift) { |
| uint32_t cost[8]; |
| uint32_t best_cost = 0; |
| int best_dir = 0; |
| int16x8_t lines[8]; |
| for (int i = 0; i < 8; i++) { |
| uint16x8_t s = vld1q_u16(&img[i * stride]); |
| lines[i] = vreinterpretq_s16_u16( |
| vsubq_u16(vshlq_u16(s, vdupq_n_s16(-coeff_shift)), vdupq_n_u16(128))); |
| } |
| |
| // Compute "mostly vertical" directions. |
| uint32x4_t cost47 = compute_directions_neon(lines, cost + 4); |
| |
| array_reverse_transpose_8x8_neon(lines, lines); |
| |
| // Compute "mostly horizontal" directions. |
| uint32x4_t cost03 = compute_directions_neon(lines, cost); |
| |
| uint32x4_t max_cost = vmaxq_u32(cost03, cost47); |
| max_cost = vmaxq_u32(max_cost, vextq_u32(max_cost, max_cost, 2)); |
| max_cost = vmaxq_u32(max_cost, vextq_u32(max_cost, max_cost, 1)); |
| best_cost = vgetq_lane_u32(max_cost, 0); |
| uint16x8_t idx = vcombine_u16(vqmovn_u32(vceqq_u32(max_cost, cost03)), |
| vqmovn_u32(vceqq_u32(max_cost, cost47))); |
| uint8x16_t idx_u8 = vcombine_u8(vqmovn_u16(idx), vqmovn_u16(idx)); |
| best_dir = compute_best_dir(idx_u8); |
| best_dir = get_msb(best_dir ^ (best_dir - 1)); // Count trailing zeros |
| |
| // Difference between the optimal variance and the variance along the |
| // orthogonal direction. Again, the sum(x^2) terms cancel out. |
| *var = best_cost - cost[(best_dir + 4) & 7]; |
| // We'd normally divide by 840, but dividing by 1024 is close enough |
| // for what we're going to do with this. |
| *var >>= 10; |
| return best_dir; |
| } |
| |
| void cdef_find_dir_dual_neon(const uint16_t *img1, const uint16_t *img2, |
| int stride, int32_t *var_out_1st, |
| int32_t *var_out_2nd, int coeff_shift, |
| int *out_dir_1st_8x8, int *out_dir_2nd_8x8) { |
| // Process first 8x8. |
| *out_dir_1st_8x8 = cdef_find_dir(img1, stride, var_out_1st, coeff_shift); |
| |
| // Process second 8x8. |
| *out_dir_2nd_8x8 = cdef_find_dir(img2, stride, var_out_2nd, coeff_shift); |
| } |
| |
| // sign(a-b) * min(abs(a-b), max(0, threshold - (abs(a-b) >> adjdamp))) |
| static INLINE int16x8_t constrain16(uint16x8_t a, uint16x8_t b, |
| unsigned int threshold, int adjdamp) { |
| int16x8_t diff = vreinterpretq_s16_u16(vsubq_u16(a, b)); |
| const int16x8_t sign = vshrq_n_s16(diff, 15); |
| diff = vabsq_s16(diff); |
| const uint16x8_t s = |
| vqsubq_u16(vdupq_n_u16(threshold), |
| vreinterpretq_u16_s16(vshlq_s16(diff, vdupq_n_s16(-adjdamp)))); |
| return veorq_s16(vaddq_s16(sign, vminq_s16(diff, vreinterpretq_s16_u16(s))), |
| sign); |
| } |
| |
| static INLINE uint16x8_t get_max_primary(const int is_lowbd, uint16x8_t *tap, |
| uint16x8_t max, |
| uint16x8_t cdef_large_value_mask) { |
| if (is_lowbd) { |
| uint8x16_t max_u8 = vreinterpretq_u8_u16(tap[0]); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[1])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[2])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[3])); |
| /* The source is 16 bits, however, we only really care about the lower |
| 8 bits. The upper 8 bits contain the "large" flag. After the final |
| primary max has been calculated, zero out the upper 8 bits. Use this |
| to find the "16 bit" max. */ |
| max = vmaxq_u16( |
| max, vandq_u16(vreinterpretq_u16_u8(max_u8), cdef_large_value_mask)); |
| } else { |
| /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ |
| max = vmaxq_u16(max, vandq_u16(tap[0], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[1], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[2], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[3], cdef_large_value_mask)); |
| } |
| return max; |
| } |
| |
| static INLINE uint16x8_t get_max_secondary(const int is_lowbd, uint16x8_t *tap, |
| uint16x8_t max, |
| uint16x8_t cdef_large_value_mask) { |
| if (is_lowbd) { |
| uint8x16_t max_u8 = vreinterpretq_u8_u16(tap[0]); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[1])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[2])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[3])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[4])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[5])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[6])); |
| max_u8 = vmaxq_u8(max_u8, vreinterpretq_u8_u16(tap[7])); |
| /* The source is 16 bits, however, we only really care about the lower |
| 8 bits. The upper 8 bits contain the "large" flag. After the final |
| primary max has been calculated, zero out the upper 8 bits. Use this |
| to find the "16 bit" max. */ |
| max = vmaxq_u16( |
| max, vandq_u16(vreinterpretq_u16_u8(max_u8), cdef_large_value_mask)); |
| } else { |
| /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ |
| max = vmaxq_u16(max, vandq_u16(tap[0], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[1], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[2], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[3], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[4], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[5], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[6], cdef_large_value_mask)); |
| max = vmaxq_u16(max, vandq_u16(tap[7], cdef_large_value_mask)); |
| } |
| return max; |
| } |
| |
| static INLINE void filter_block_4x4(const int is_lowbd, void *dest, int dstride, |
| const uint16_t *in, int pri_strength, |
| int sec_strength, int dir, int pri_damping, |
| int sec_damping, int coeff_shift, |
| int height, int enable_primary, |
| int enable_secondary) { |
| uint8_t *dst8 = (uint8_t *)dest; |
| uint16_t *dst16 = (uint16_t *)dest; |
| const int clipping_required = enable_primary && enable_secondary; |
| uint16x8_t max, min; |
| const uint16x8_t cdef_large_value_mask = |
| vdupq_n_u16(((uint16_t)~CDEF_VERY_LARGE)); |
| const int po1 = cdef_directions[dir][0]; |
| const int po2 = cdef_directions[dir][1]; |
| const int s1o1 = cdef_directions[dir + 2][0]; |
| const int s1o2 = cdef_directions[dir + 2][1]; |
| const int s2o1 = cdef_directions[dir - 2][0]; |
| const int s2o2 = cdef_directions[dir - 2][1]; |
| const int *pri_taps = cdef_pri_taps[(pri_strength >> coeff_shift) & 1]; |
| const int *sec_taps = cdef_sec_taps; |
| |
| if (enable_primary && pri_strength) { |
| pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); |
| } |
| if (enable_secondary && sec_strength) { |
| sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); |
| } |
| |
| int h = height; |
| do { |
| int16x8_t sum = vdupq_n_s16(0); |
| uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); |
| max = min = s; |
| |
| if (enable_primary) { |
| uint16x8_t tap[4]; |
| |
| // Primary near taps |
| tap[0] = load_unaligned_u16_4x2(in + po1, CDEF_BSTRIDE); |
| tap[1] = load_unaligned_u16_4x2(in - po1, CDEF_BSTRIDE); |
| int16x8_t p0 = constrain16(tap[0], s, pri_strength, pri_damping); |
| int16x8_t p1 = constrain16(tap[1], s, pri_strength, pri_damping); |
| |
| // sum += pri_taps[0] * (p0 + p1) |
| p0 = vaddq_s16(p0, p1); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(pri_taps[0])); |
| |
| // Primary far taps |
| tap[2] = load_unaligned_u16_4x2(in + po2, CDEF_BSTRIDE); |
| tap[3] = load_unaligned_u16_4x2(in - po2, CDEF_BSTRIDE); |
| p0 = constrain16(tap[2], s, pri_strength, pri_damping); |
| p1 = constrain16(tap[3], s, pri_strength, pri_damping); |
| |
| // sum += pri_taps[1] * (p0 + p1) |
| p0 = vaddq_s16(p0, p1); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(pri_taps[1])); |
| |
| if (clipping_required) { |
| max = get_max_primary(is_lowbd, tap, max, cdef_large_value_mask); |
| |
| min = vminq_u16(min, tap[0]); |
| min = vminq_u16(min, tap[1]); |
| min = vminq_u16(min, tap[2]); |
| min = vminq_u16(min, tap[3]); |
| } |
| } |
| |
| if (enable_secondary) { |
| uint16x8_t tap[8]; |
| |
| // Secondary near taps |
| tap[0] = load_unaligned_u16_4x2(in + s1o1, CDEF_BSTRIDE); |
| tap[1] = load_unaligned_u16_4x2(in - s1o1, CDEF_BSTRIDE); |
| tap[2] = load_unaligned_u16_4x2(in + s2o1, CDEF_BSTRIDE); |
| tap[3] = load_unaligned_u16_4x2(in - s2o1, CDEF_BSTRIDE); |
| int16x8_t p0 = constrain16(tap[0], s, sec_strength, sec_damping); |
| int16x8_t p1 = constrain16(tap[1], s, sec_strength, sec_damping); |
| int16x8_t p2 = constrain16(tap[2], s, sec_strength, sec_damping); |
| int16x8_t p3 = constrain16(tap[3], s, sec_strength, sec_damping); |
| |
| // sum += sec_taps[0] * (p0 + p1 + p2 + p3) |
| p0 = vaddq_s16(p0, p1); |
| p2 = vaddq_s16(p2, p3); |
| p0 = vaddq_s16(p0, p2); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(sec_taps[0])); |
| |
| // Secondary far taps |
| tap[4] = load_unaligned_u16_4x2(in + s1o2, CDEF_BSTRIDE); |
| tap[5] = load_unaligned_u16_4x2(in - s1o2, CDEF_BSTRIDE); |
| tap[6] = load_unaligned_u16_4x2(in + s2o2, CDEF_BSTRIDE); |
| tap[7] = load_unaligned_u16_4x2(in - s2o2, CDEF_BSTRIDE); |
| p0 = constrain16(tap[4], s, sec_strength, sec_damping); |
| p1 = constrain16(tap[5], s, sec_strength, sec_damping); |
| p2 = constrain16(tap[6], s, sec_strength, sec_damping); |
| p3 = constrain16(tap[7], s, sec_strength, sec_damping); |
| |
| // sum += sec_taps[1] * (p0 + p1 + p2 + p3) |
| p0 = vaddq_s16(p0, p1); |
| p2 = vaddq_s16(p2, p3); |
| p0 = vaddq_s16(p0, p2); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(sec_taps[1])); |
| |
| if (clipping_required) { |
| max = get_max_secondary(is_lowbd, tap, max, cdef_large_value_mask); |
| |
| min = vminq_u16(min, tap[0]); |
| min = vminq_u16(min, tap[1]); |
| min = vminq_u16(min, tap[2]); |
| min = vminq_u16(min, tap[3]); |
| min = vminq_u16(min, tap[4]); |
| min = vminq_u16(min, tap[5]); |
| min = vminq_u16(min, tap[6]); |
| min = vminq_u16(min, tap[7]); |
| } |
| } |
| |
| // res = row + ((sum - (sum < 0) + 8) >> 4) |
| sum = vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); |
| int16x8_t res = vaddq_s16(sum, vdupq_n_s16(8)); |
| res = vshrq_n_s16(res, 4); |
| res = vaddq_s16(vreinterpretq_s16_u16(s), res); |
| |
| if (clipping_required) { |
| res = vminq_s16(vmaxq_s16(res, vreinterpretq_s16_u16(min)), |
| vreinterpretq_s16_u16(max)); |
| } |
| |
| if (is_lowbd) { |
| const uint8x8_t res_128 = vqmovun_s16(res); |
| store_unaligned_u8_4x2(dst8, dstride, res_128); |
| } else { |
| store_unaligned_u16_4x2(dst16, dstride, vreinterpretq_u16_s16(res)); |
| } |
| |
| in += 2 * CDEF_BSTRIDE; |
| dst8 += 2 * dstride; |
| dst16 += 2 * dstride; |
| h -= 2; |
| } while (h != 0); |
| } |
| |
| static INLINE void filter_block_8x8(const int is_lowbd, void *dest, int dstride, |
| const uint16_t *in, int pri_strength, |
| int sec_strength, int dir, int pri_damping, |
| int sec_damping, int coeff_shift, |
| int height, int enable_primary, |
| int enable_secondary) { |
| uint8_t *dst8 = (uint8_t *)dest; |
| uint16_t *dst16 = (uint16_t *)dest; |
| const int clipping_required = enable_primary && enable_secondary; |
| uint16x8_t max, min; |
| const uint16x8_t cdef_large_value_mask = |
| vdupq_n_u16(((uint16_t)~CDEF_VERY_LARGE)); |
| const int po1 = cdef_directions[dir][0]; |
| const int po2 = cdef_directions[dir][1]; |
| const int s1o1 = cdef_directions[dir + 2][0]; |
| const int s1o2 = cdef_directions[dir + 2][1]; |
| const int s2o1 = cdef_directions[dir - 2][0]; |
| const int s2o2 = cdef_directions[dir - 2][1]; |
| const int *pri_taps = cdef_pri_taps[(pri_strength >> coeff_shift) & 1]; |
| const int *sec_taps = cdef_sec_taps; |
| |
| if (enable_primary && pri_strength) { |
| pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); |
| } |
| if (enable_secondary && sec_strength) { |
| sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); |
| } |
| |
| int h = height; |
| do { |
| int16x8_t sum = vdupq_n_s16(0); |
| uint16x8_t s = vld1q_u16(in); |
| max = min = s; |
| |
| if (enable_primary) { |
| uint16x8_t tap[4]; |
| |
| // Primary near taps |
| tap[0] = vld1q_u16(in + po1); |
| tap[1] = vld1q_u16(in - po1); |
| int16x8_t p0 = constrain16(tap[0], s, pri_strength, pri_damping); |
| int16x8_t p1 = constrain16(tap[1], s, pri_strength, pri_damping); |
| |
| // sum += pri_taps[0] * (p0 + p1) |
| p0 = vaddq_s16(p0, p1); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(pri_taps[0])); |
| |
| // Primary far taps |
| tap[2] = vld1q_u16(in + po2); |
| p0 = constrain16(tap[2], s, pri_strength, pri_damping); |
| tap[3] = vld1q_u16(in - po2); |
| p1 = constrain16(tap[3], s, pri_strength, pri_damping); |
| |
| // sum += pri_taps[1] * (p0 + p1) |
| p0 = vaddq_s16(p0, p1); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(pri_taps[1])); |
| if (clipping_required) { |
| max = get_max_primary(is_lowbd, tap, max, cdef_large_value_mask); |
| |
| min = vminq_u16(min, tap[0]); |
| min = vminq_u16(min, tap[1]); |
| min = vminq_u16(min, tap[2]); |
| min = vminq_u16(min, tap[3]); |
| } |
| } |
| |
| if (enable_secondary) { |
| uint16x8_t tap[8]; |
| |
| // Secondary near taps |
| tap[0] = vld1q_u16(in + s1o1); |
| tap[1] = vld1q_u16(in - s1o1); |
| tap[2] = vld1q_u16(in + s2o1); |
| tap[3] = vld1q_u16(in - s2o1); |
| int16x8_t p0 = constrain16(tap[0], s, sec_strength, sec_damping); |
| int16x8_t p1 = constrain16(tap[1], s, sec_strength, sec_damping); |
| int16x8_t p2 = constrain16(tap[2], s, sec_strength, sec_damping); |
| int16x8_t p3 = constrain16(tap[3], s, sec_strength, sec_damping); |
| |
| // sum += sec_taps[0] * (p0 + p1 + p2 + p3) |
| p0 = vaddq_s16(p0, p1); |
| p2 = vaddq_s16(p2, p3); |
| p0 = vaddq_s16(p0, p2); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(sec_taps[0])); |
| |
| // Secondary far taps |
| tap[4] = vld1q_u16(in + s1o2); |
| tap[5] = vld1q_u16(in - s1o2); |
| tap[6] = vld1q_u16(in + s2o2); |
| tap[7] = vld1q_u16(in - s2o2); |
| p0 = constrain16(tap[4], s, sec_strength, sec_damping); |
| p1 = constrain16(tap[5], s, sec_strength, sec_damping); |
| p2 = constrain16(tap[6], s, sec_strength, sec_damping); |
| p3 = constrain16(tap[7], s, sec_strength, sec_damping); |
| |
| // sum += sec_taps[1] * (p0 + p1 + p2 + p3) |
| p0 = vaddq_s16(p0, p1); |
| p2 = vaddq_s16(p2, p3); |
| p0 = vaddq_s16(p0, p2); |
| sum = vmlaq_s16(sum, p0, vdupq_n_s16(sec_taps[1])); |
| |
| if (clipping_required) { |
| max = get_max_secondary(is_lowbd, tap, max, cdef_large_value_mask); |
| |
| min = vminq_u16(min, tap[0]); |
| min = vminq_u16(min, tap[1]); |
| min = vminq_u16(min, tap[2]); |
| min = vminq_u16(min, tap[3]); |
| min = vminq_u16(min, tap[4]); |
| min = vminq_u16(min, tap[5]); |
| min = vminq_u16(min, tap[6]); |
| min = vminq_u16(min, tap[7]); |
| } |
| } |
| |
| // res = row + ((sum - (sum < 0) + 8) >> 4) |
| sum = vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); |
| int16x8_t res = vaddq_s16(sum, vdupq_n_s16(8)); |
| res = vshrq_n_s16(res, 4); |
| res = vaddq_s16(vreinterpretq_s16_u16(s), res); |
| if (clipping_required) { |
| res = vminq_s16(vmaxq_s16(res, vreinterpretq_s16_u16(min)), |
| vreinterpretq_s16_u16(max)); |
| } |
| |
| if (is_lowbd) { |
| const uint8x8_t res_128 = vqmovun_s16(res); |
| vst1_u8(dst8, res_128); |
| } else { |
| vst1q_u16(dst16, vreinterpretq_u16_s16(res)); |
| } |
| |
| in += CDEF_BSTRIDE; |
| dst8 += dstride; |
| dst16 += dstride; |
| } while (--h != 0); |
| } |
| |
| static INLINE void copy_block_4xh(const int is_lowbd, void *dest, int dstride, |
| const uint16_t *in, int height) { |
| uint8_t *dst8 = (uint8_t *)dest; |
| uint16_t *dst16 = (uint16_t *)dest; |
| |
| int h = height; |
| do { |
| const uint16x8_t row = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); |
| if (is_lowbd) { |
| const uint8x8_t res_128 = vqmovn_u16(row); |
| store_unaligned_u8_4x2(dst8, dstride, res_128); |
| } else { |
| store_unaligned_u16_4x2(dst16, dstride, row); |
| } |
| |
| in += 2 * CDEF_BSTRIDE; |
| dst8 += 2 * dstride; |
| dst16 += 2 * dstride; |
| h -= 2; |
| } while (h != 0); |
| } |
| |
| static INLINE void copy_block_8xh(const int is_lowbd, void *dest, int dstride, |
| const uint16_t *in, int height) { |
| uint8_t *dst8 = (uint8_t *)dest; |
| uint16_t *dst16 = (uint16_t *)dest; |
| |
| int h = height; |
| do { |
| const uint16x8_t row = vld1q_u16(in); |
| if (is_lowbd) { |
| const uint8x8_t res_128 = vqmovn_u16(row); |
| vst1_u8(dst8, res_128); |
| } else { |
| vst1q_u16(dst16, row); |
| } |
| |
| in += CDEF_BSTRIDE; |
| dst8 += dstride; |
| dst16 += dstride; |
| } while (--h != 0); |
| } |
| |
| void cdef_filter_8_0_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/1); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/1); |
| } |
| } |
| |
| void cdef_filter_8_1_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/0); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/0); |
| } |
| } |
| |
| void cdef_filter_8_2_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/0, |
| /*enable_secondary=*/1); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/1, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/0, |
| /*enable_secondary=*/1); |
| } |
| } |
| |
| void cdef_filter_8_3_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| (void)pri_strength; |
| (void)sec_strength; |
| (void)dir; |
| (void)pri_damping; |
| (void)sec_damping; |
| (void)coeff_shift; |
| (void)block_width; |
| if (block_width == 8) { |
| copy_block_8xh(/*is_lowbd=*/1, dest, dstride, in, block_height); |
| } else { |
| copy_block_4xh(/*is_lowbd=*/1, dest, dstride, in, block_height); |
| } |
| } |
| |
| void cdef_filter_16_0_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/1); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/1); |
| } |
| } |
| |
| void cdef_filter_16_1_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/0); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/1, |
| /*enable_secondary=*/0); |
| } |
| } |
| |
| void cdef_filter_16_2_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| if (block_width == 8) { |
| filter_block_8x8(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/0, |
| /*enable_secondary=*/1); |
| } else { |
| filter_block_4x4(/*is_lowbd=*/0, dest, dstride, in, pri_strength, |
| sec_strength, dir, pri_damping, sec_damping, coeff_shift, |
| block_height, /*enable_primary=*/0, |
| /*enable_secondary=*/1); |
| } |
| } |
| |
| void cdef_filter_16_3_neon(void *dest, int dstride, const uint16_t *in, |
| int pri_strength, int sec_strength, int dir, |
| int pri_damping, int sec_damping, int coeff_shift, |
| int block_width, int block_height) { |
| (void)pri_strength; |
| (void)sec_strength; |
| (void)dir; |
| (void)pri_damping; |
| (void)sec_damping; |
| (void)coeff_shift; |
| (void)block_width; |
| if (block_width == 8) { |
| copy_block_8xh(/*is_lowbd=*/0, dest, dstride, in, block_height); |
| } else { |
| copy_block_4xh(/*is_lowbd=*/0, dest, dstride, in, block_height); |
| } |
| } |
