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| -rw-r--r-- | third_party/aom/av1/common/arm/cdef_block_neon.c | 1355 |
1 files changed, 1355 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/arm/cdef_block_neon.c b/third_party/aom/av1/common/arm/cdef_block_neon.c new file mode 100644 index 0000000000..53d3a9f1e0 --- /dev/null +++ b/third_party/aom/av1/common/arm/cdef_block_neon.c @@ -0,0 +1,1355 @@ +/* + * 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 <arm_neon.h> +#include <assert.h> + +#include "config/aom_config.h" +#include "config/av1_rtcd.h" + +#include "aom_dsp/arm/mem_neon.h" +#include "aom_dsp/arm/sum_neon.h" +#include "av1/common/cdef_block.h" + +void cdef_copy_rect8_8bit_to_16bit_neon(uint16_t *dst, int dstride, + const uint8_t *src, int sstride, + int width, int height) { + do { + const uint8_t *src_ptr = src; + uint16_t *dst_ptr = dst; + + int w = 0; + while (width - w >= 16) { + uint8x16_t row = vld1q_u8(src_ptr + w); + uint8x16x2_t row_u16 = { { row, vdupq_n_u8(0) } }; + vst2q_u8((uint8_t *)(dst_ptr + w), row_u16); + + w += 16; + } + if (width - w >= 8) { + uint8x8_t row = vld1_u8(src_ptr + w); + vst1q_u16(dst_ptr + w, vmovl_u8(row)); + w += 8; + } + if (width - w == 4) { + for (int i = w; i < w + 4; i++) { + dst_ptr[i] = src_ptr[i]; + } + } + + src += sstride; + dst += dstride; + } while (--height != 0); +} + +void cdef_copy_rect8_16bit_to_16bit_neon(uint16_t *dst, int dstride, + const uint16_t *src, int sstride, + int width, int height) { + do { + const uint16_t *src_ptr = src; + uint16_t *dst_ptr = dst; + + int w = 0; + while (width - w >= 8) { + uint16x8_t row = vld1q_u16(src_ptr + w); + vst1q_u16(dst_ptr + w, row); + + w += 8; + } + if (width - w == 4) { + uint16x4_t row = vld1_u16(src_ptr + w); + vst1_u16(dst_ptr + w, row); + } + + src += sstride; + dst += dstride; + } while (--height != 0); +} + +// 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) { + // Reverse partial B. + // pattern = { 12 13 10 11 8 9 6 7 4 5 2 3 0 1 14 15 }. + 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 + + // Square and add the corresponding x and y values. + int32x4_t cost_lo = vmull_s16(vget_low_s16(partiala), vget_low_s16(partiala)); + cost_lo = vmlal_s16(cost_lo, vget_low_s16(partialb), vget_low_s16(partialb)); + int32x4_t cost_hi = + vmull_s16(vget_high_s16(partiala), vget_high_s16(partiala)); + cost_hi = + vmlal_s16(cost_hi, vget_high_s16(partialb), vget_high_s16(partialb)); + + // Multiply by constant. + uint32x4_t cost = vmulq_u32(vreinterpretq_u32_s32(cost_lo), const1); + cost = vmlaq_u32(cost, vreinterpretq_u32_s32(cost_hi), const2); + return cost; +} + +// This function computes the cost along directions 4, 5, 6, 7. (4 is diagonal +// down-right, 6 is vertical). +// +// For each direction the lines are shifted so that we can perform a +// basic sum on each vector element. For example, direction 5 is "south by +// southeast", so we need to add the pixels along each line i below: +// +// 0 1 2 3 4 5 6 7 +// 0 1 2 3 4 5 6 7 +// 8 0 1 2 3 4 5 6 +// 8 0 1 2 3 4 5 6 +// 9 8 0 1 2 3 4 5 +// 9 8 0 1 2 3 4 5 +// 10 9 8 0 1 2 3 4 +// 10 9 8 0 1 2 3 4 +// +// For this to fit nicely in vectors, the lines need to be shifted like so: +// 0 1 2 3 4 5 6 7 +// 0 1 2 3 4 5 6 7 +// 8 0 1 2 3 4 5 6 +// 8 0 1 2 3 4 5 6 +// 9 8 0 1 2 3 4 5 +// 9 8 0 1 2 3 4 5 +// 10 9 8 0 1 2 3 4 +// 10 9 8 0 1 2 3 4 +// +// In this configuration we can now perform SIMD additions to get the cost +// along direction 5. Since this won't fit into a single 128-bit vector, we use +// two of them to compute each half of the new configuration, and pad the empty +// spaces with zeros. Similar shifting is done for other directions, except +// direction 6 which is straightforward as it's the vertical direction. +static INLINE uint32x4_t compute_vert_directions_neon(int16x8_t lines[8], + uint32_t cost[4]) { + const int16x8_t zero = vdupq_n_s16(0); + + // Partial sums for lines 0 and 1. + int16x8_t partial4a = vextq_s16(zero, lines[0], 1); + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[1], 2)); + int16x8_t partial4b = vextq_s16(lines[0], zero, 1); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[1], zero, 2)); + int16x8_t tmp = vaddq_s16(lines[0], lines[1]); + int16x8_t partial5a = vextq_s16(zero, tmp, 3); + int16x8_t partial5b = vextq_s16(tmp, zero, 3); + int16x8_t partial7a = vextq_s16(zero, tmp, 6); + int16x8_t partial7b = vextq_s16(tmp, zero, 6); + int16x8_t partial6 = tmp; + + // Partial sums for lines 2 and 3. + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[2], 3)); + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[3], 4)); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[2], zero, 3)); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[3], zero, 4)); + tmp = vaddq_s16(lines[2], lines[3]); + partial5a = vaddq_s16(partial5a, vextq_s16(zero, tmp, 4)); + partial5b = vaddq_s16(partial5b, vextq_s16(tmp, zero, 4)); + partial7a = vaddq_s16(partial7a, vextq_s16(zero, tmp, 5)); + partial7b = vaddq_s16(partial7b, vextq_s16(tmp, zero, 5)); + partial6 = vaddq_s16(partial6, tmp); + + // Partial sums for lines 4 and 5. + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[4], 5)); + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[5], 6)); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[4], zero, 5)); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[5], zero, 6)); + tmp = vaddq_s16(lines[4], lines[5]); + partial5a = vaddq_s16(partial5a, vextq_s16(zero, tmp, 5)); + partial5b = vaddq_s16(partial5b, vextq_s16(tmp, zero, 5)); + partial7a = vaddq_s16(partial7a, vextq_s16(zero, tmp, 4)); + partial7b = vaddq_s16(partial7b, vextq_s16(tmp, zero, 4)); + partial6 = vaddq_s16(partial6, tmp); + + // Partial sums for lines 6 and 7. + partial4a = vaddq_s16(partial4a, vextq_s16(zero, lines[6], 7)); + partial4a = vaddq_s16(partial4a, lines[7]); + partial4b = vaddq_s16(partial4b, vextq_s16(lines[6], zero, 7)); + tmp = vaddq_s16(lines[6], lines[7]); + partial5a = vaddq_s16(partial5a, vextq_s16(zero, tmp, 6)); + partial5b = vaddq_s16(partial5b, vextq_s16(tmp, zero, 6)); + partial7a = vaddq_s16(partial7a, vextq_s16(zero, tmp, 3)); + partial7b = vaddq_s16(partial7b, vextq_s16(tmp, zero, 3)); + 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. + int32x4_t partial6_s32 = + vmull_s16(vget_low_s16(partial6), vget_low_s16(partial6)); + partial6_s32 = + vmlal_s16(partial6_s32, vget_high_s16(partial6), vget_high_s16(partial6)); + + uint32x4_t costs[4]; + costs[0] = fold_mul_and_sum_neon(partial4a, partial4b, const0, const1); + costs[1] = fold_mul_and_sum_neon(partial5a, partial5b, const2, const3); + costs[2] = vmulq_n_u32(vreinterpretq_u32_s32(partial6_s32), 105); + costs[3] = fold_mul_and_sum_neon(partial7a, partial7b, const2, const3); + + costs[0] = horizontal_add_4d_u32x4(costs); + vst1q_u32(cost, costs[0]); + return costs[0]; +} + +static INLINE uint32x4_t fold_mul_and_sum_pairwise_neon(int16x8_t partiala, + int16x8_t partialb, + int16x8_t partialc, + uint32x4_t const0) { + // Reverse partial c. + // pattern = { 10 11 8 9 6 7 4 5 2 3 0 1 12 13 14 15 }. + uint8x16_t pattern = vreinterpretq_u8_u64( + vcombine_u64(vcreate_u64((uint64_t)0x05040706 << 32 | 0x09080b0a), + vcreate_u64((uint64_t)0x0f0e0d0c << 32 | 0x01000302))); + +#if AOM_ARCH_AARCH64 + partialc = + vreinterpretq_s16_s8(vqtbl1q_s8(vreinterpretq_s8_s16(partialc), pattern)); +#else + int8x8x2_t p = { { vget_low_s8(vreinterpretq_s8_s16(partialc)), + vget_high_s8(vreinterpretq_s8_s16(partialc)) } }; + 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))); + partialc = vreinterpretq_s16_s8(vcombine_s8(shuffle_lo, shuffle_hi)); +#endif + + int32x4_t partiala_s32 = vpaddlq_s16(partiala); + int32x4_t partialb_s32 = vpaddlq_s16(partialb); + int32x4_t partialc_s32 = vpaddlq_s16(partialc); + + partiala_s32 = vmulq_s32(partiala_s32, partiala_s32); + partialb_s32 = vmulq_s32(partialb_s32, partialb_s32); + partialc_s32 = vmulq_s32(partialc_s32, partialc_s32); + + partiala_s32 = vaddq_s32(partiala_s32, partialc_s32); + + uint32x4_t cost = vmulq_n_u32(vreinterpretq_u32_s32(partialb_s32), 105); + cost = vmlaq_u32(cost, vreinterpretq_u32_s32(partiala_s32), const0); + return cost; +} + +// This function computes the cost along directions 0, 1, 2, 3. (0 means +// 45-degree up-right, 2 is horizontal). +// +// For direction 1 and 3 ("east northeast" and "east southeast") the shifted +// lines need three vectors instead of two. For direction 1 for example, we need +// to compute the sums along the line i below: +// 0 0 1 1 2 2 3 3 +// 1 1 2 2 3 3 4 4 +// 2 2 3 3 4 4 5 5 +// 3 3 4 4 5 5 6 6 +// 4 4 5 5 6 6 7 7 +// 5 5 6 6 7 7 8 8 +// 6 6 7 7 8 8 9 9 +// 7 7 8 8 9 9 10 10 +// +// Which means we need the following configuration: +// 0 0 1 1 2 2 3 3 +// 1 1 2 2 3 3 4 4 +// 2 2 3 3 4 4 5 5 +// 3 3 4 4 5 5 6 6 +// 4 4 5 5 6 6 7 7 +// 5 5 6 6 7 7 8 8 +// 6 6 7 7 8 8 9 9 +// 7 7 8 8 9 9 10 10 +// +// Three vectors are needed to compute this, as well as some extra pairwise +// additions. +static uint32x4_t compute_horiz_directions_neon(int16x8_t lines[8], + uint32_t cost[4]) { + const int16x8_t zero = vdupq_n_s16(0); + + // Compute diagonal directions (1, 2, 3). + // Partial sums for lines 0 and 1. + int16x8_t partial0a = lines[0]; + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[1], 7)); + int16x8_t partial0b = vextq_s16(lines[1], zero, 7); + int16x8_t partial1a = vaddq_s16(lines[0], vextq_s16(zero, lines[1], 6)); + int16x8_t partial1b = vextq_s16(lines[1], zero, 6); + int16x8_t partial3a = vextq_s16(lines[0], zero, 2); + partial3a = vaddq_s16(partial3a, vextq_s16(lines[1], zero, 4)); + int16x8_t partial3b = vextq_s16(zero, lines[0], 2); + partial3b = vaddq_s16(partial3b, vextq_s16(zero, lines[1], 4)); + + // Partial sums for lines 2 and 3. + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[2], 6)); + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[3], 5)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[2], zero, 6)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[3], zero, 5)); + partial1a = vaddq_s16(partial1a, vextq_s16(zero, lines[2], 4)); + partial1a = vaddq_s16(partial1a, vextq_s16(zero, lines[3], 2)); + partial1b = vaddq_s16(partial1b, vextq_s16(lines[2], zero, 4)); + partial1b = vaddq_s16(partial1b, vextq_s16(lines[3], zero, 2)); + partial3a = vaddq_s16(partial3a, vextq_s16(lines[2], zero, 6)); + partial3b = vaddq_s16(partial3b, vextq_s16(zero, lines[2], 6)); + partial3b = vaddq_s16(partial3b, lines[3]); + + // Partial sums for lines 4 and 5. + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[4], 4)); + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[5], 3)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[4], zero, 4)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[5], zero, 3)); + partial1b = vaddq_s16(partial1b, lines[4]); + partial1b = vaddq_s16(partial1b, vextq_s16(zero, lines[5], 6)); + int16x8_t partial1c = vextq_s16(lines[5], zero, 6); + partial3b = vaddq_s16(partial3b, vextq_s16(lines[4], zero, 2)); + partial3b = vaddq_s16(partial3b, vextq_s16(lines[5], zero, 4)); + int16x8_t partial3c = vextq_s16(zero, lines[4], 2); + partial3c = vaddq_s16(partial3c, vextq_s16(zero, lines[5], 4)); + + // Partial sums for lines 6 and 7. + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[6], 2)); + partial0a = vaddq_s16(partial0a, vextq_s16(zero, lines[7], 1)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[6], zero, 2)); + partial0b = vaddq_s16(partial0b, vextq_s16(lines[7], zero, 1)); + partial1b = vaddq_s16(partial1b, vextq_s16(zero, lines[6], 4)); + partial1b = vaddq_s16(partial1b, vextq_s16(zero, lines[7], 2)); + partial1c = vaddq_s16(partial1c, vextq_s16(lines[6], zero, 4)); + partial1c = vaddq_s16(partial1c, vextq_s16(lines[7], zero, 2)); + partial3b = vaddq_s16(partial3b, vextq_s16(lines[6], zero, 6)); + partial3c = vaddq_s16(partial3c, vextq_s16(zero, lines[6], 6)); + partial3c = vaddq_s16(partial3c, lines[7]); + + // Special case for direction 2 as it's just a sum along each line. + int16x8_t lines03[4] = { lines[0], lines[1], lines[2], lines[3] }; + int16x8_t lines47[4] = { lines[4], lines[5], lines[6], lines[7] }; + int32x4_t partial2a = horizontal_add_4d_s16x8(lines03); + int32x4_t partial2b = horizontal_add_4d_s16x8(lines47); + + uint32x4_t partial2a_u32 = + vreinterpretq_u32_s32(vmulq_s32(partial2a, partial2a)); + uint32x4_t partial2b_u32 = + vreinterpretq_u32_s32(vmulq_s32(partial2b, partial2b)); + + 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((uint64_t)210 << 32 | 420), + vcreate_u64((uint64_t)105 << 32 | 140))); + + uint32x4_t costs[4]; + costs[0] = fold_mul_and_sum_neon(partial0a, partial0b, const0, const1); + costs[1] = + fold_mul_and_sum_pairwise_neon(partial1a, partial1b, partial1c, const2); + costs[2] = vaddq_u32(partial2a_u32, partial2b_u32); + costs[2] = vmulq_n_u32(costs[2], 105); + costs[3] = + fold_mul_and_sum_pairwise_neon(partial3c, partial3b, partial3a, const2); + + costs[0] = horizontal_add_4d_u32x4(costs); + vst1q_u32(cost, costs[0]); + return costs[0]; +} + +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_vert_directions_neon(lines, cost + 4); + + // Compute "mostly horizontal" directions. + uint32x4_t cost03 = compute_horiz_directions_neon(lines, cost); + + // Find max cost as well as its index to get best_dir. + // The max cost needs to be propagated in the whole vector to find its + // position in the original cost vectors cost03 and cost47. + uint32x4_t cost07 = vmaxq_u32(cost03, cost47); +#if AOM_ARCH_AARCH64 + best_cost = vmaxvq_u32(cost07); + uint32x4_t max_cost = vdupq_n_u32(best_cost); + uint8x16x2_t costs = { { vreinterpretq_u8_u32(vceqq_u32(max_cost, cost03)), + vreinterpretq_u8_u32( + vceqq_u32(max_cost, cost47)) } }; + // idx = { 28, 24, 20, 16, 12, 8, 4, 0 }; + uint8x8_t idx = vreinterpret_u8_u64(vcreate_u64(0x0004080c1014181cULL)); + // Get the lowest 8 bit of each 32-bit elements and reverse them. + uint8x8_t tbl = vqtbl2_u8(costs, idx); + uint64_t a = vget_lane_u64(vreinterpret_u64_u8(tbl), 0); + best_dir = aom_clzll(a) >> 3; +#else + uint32x2_t cost64 = vpmax_u32(vget_low_u32(cost07), vget_high_u32(cost07)); + cost64 = vpmax_u32(cost64, cost64); + uint32x4_t max_cost = vcombine_u32(cost64, cost64); + best_cost = vget_lane_u32(cost64, 0); + uint16x8_t costs = vcombine_u16(vmovn_u32(vceqq_u32(max_cost, cost03)), + vmovn_u32(vceqq_u32(max_cost, cost47))); + uint8x8_t idx = + vand_u8(vmovn_u16(costs), + vreinterpret_u8_u64(vcreate_u64(0x8040201008040201ULL))); + int sum = horizontal_add_u8x8(idx); + best_dir = get_msb(sum ^ (sum - 1)); +#endif + + // 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) { + uint16x8_t diff = vabdq_u16(a, b); + const uint16x8_t a_gt_b = vcgtq_u16(a, b); + const uint16x8_t s = vqsubq_u16(vdupq_n_u16(threshold), + vshlq_u16(diff, vdupq_n_s16(-adjdamp))); + const int16x8_t clip = vreinterpretq_s16_u16(vminq_u16(diff, s)); + return vbslq_s16(a_gt_b, clip, vnegq_s16(clip)); +} + +static INLINE void primary_filter(uint16x8_t s, uint16x8_t tap[4], + const int *pri_taps, int pri_strength, + int pri_damping, int16x8_t *sum) { + // Near taps + int16x8_t n0 = constrain16(tap[0], s, pri_strength, pri_damping); + int16x8_t n1 = constrain16(tap[1], s, pri_strength, pri_damping); + // sum += pri_taps[0] * (n0 + n1) + n0 = vaddq_s16(n0, n1); + *sum = vmlaq_n_s16(*sum, n0, pri_taps[0]); + + // Far taps + int16x8_t f0 = constrain16(tap[2], s, pri_strength, pri_damping); + int16x8_t f1 = constrain16(tap[3], s, pri_strength, pri_damping); + // sum += pri_taps[1] * (f0 + f1) + f0 = vaddq_s16(f0, f1); + *sum = vmlaq_n_s16(*sum, f0, pri_taps[1]); +} + +static INLINE void secondary_filter(uint16x8_t s, uint16x8_t tap[8], + const int *sec_taps, int sec_strength, + int sec_damping, int16x8_t *sum) { + // Near taps + int16x8_t s0 = constrain16(tap[0], s, sec_strength, sec_damping); + int16x8_t s1 = constrain16(tap[1], s, sec_strength, sec_damping); + int16x8_t s2 = constrain16(tap[2], s, sec_strength, sec_damping); + int16x8_t s3 = constrain16(tap[3], s, sec_strength, sec_damping); + + // sum += sec_taps[0] * (p0 + p1 + p2 + p3) + s0 = vaddq_s16(s0, s1); + s2 = vaddq_s16(s2, s3); + s0 = vaddq_s16(s0, s2); + *sum = vmlaq_n_s16(*sum, s0, sec_taps[0]); + + // Far taps + s0 = constrain16(tap[4], s, sec_strength, sec_damping); + s1 = constrain16(tap[5], s, sec_strength, sec_damping); + s2 = constrain16(tap[6], s, sec_strength, sec_damping); + s3 = constrain16(tap[7], s, sec_strength, sec_damping); + + // sum += sec_taps[1] * (p0 + p1 + p2 + p3) + s0 = vaddq_s16(s0, s1); + s2 = vaddq_s16(s2, s3); + s0 = vaddq_s16(s0, s2); + *sum = vmlaq_n_s16(*sum, s0, sec_taps[1]); +} + +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) { + 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 (pri_strength) { + pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); + } + if (sec_strength) { + sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); + } + + if (block_width == 8) { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + max = min = s; + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = vld1q_u16(in + po1); + pri_src[1] = vld1q_u16(in - po1); + + // Primary far taps + pri_src[2] = vld1q_u16(in + po2); + pri_src[3] = vld1q_u16(in - po2); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + // 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. + uint8x16_t pri_max0 = vmaxq_u8(vreinterpretq_u8_u16(pri_src[0]), + vreinterpretq_u8_u16(pri_src[1])); + uint8x16_t pri_max1 = vmaxq_u8(vreinterpretq_u8_u16(pri_src[2]), + vreinterpretq_u8_u16(pri_src[3])); + pri_max0 = vmaxq_u8(pri_max0, pri_max1); + max = vmaxq_u16(max, vandq_u16(vreinterpretq_u16_u8(pri_max0), + cdef_large_value_mask)); + + uint16x8_t pri_min0 = vminq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_min1 = vminq_u16(pri_src[2], pri_src[3]); + pri_min0 = vminq_u16(pri_min0, pri_min1); + min = vminq_u16(min, pri_min0); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = vld1q_u16(in + s1o1); + sec_src[1] = vld1q_u16(in - s1o1); + sec_src[2] = vld1q_u16(in + s2o1); + sec_src[3] = vld1q_u16(in - s2o1); + + // Secondary far taps + sec_src[4] = vld1q_u16(in + s1o2); + sec_src[5] = vld1q_u16(in - s1o2); + sec_src[6] = vld1q_u16(in + s2o2); + sec_src[7] = vld1q_u16(in - s2o2); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // 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. + uint8x16_t sec_max0 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[0]), + vreinterpretq_u8_u16(sec_src[1])); + uint8x16_t sec_max1 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[2]), + vreinterpretq_u8_u16(sec_src[3])); + uint8x16_t sec_max2 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[4]), + vreinterpretq_u8_u16(sec_src[5])); + uint8x16_t sec_max3 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[6]), + vreinterpretq_u8_u16(sec_src[7])); + sec_max0 = vmaxq_u8(sec_max0, sec_max1); + sec_max2 = vmaxq_u8(sec_max2, sec_max3); + sec_max0 = vmaxq_u8(sec_max0, sec_max2); + max = vmaxq_u16(max, vandq_u16(vreinterpretq_u16_u8(sec_max0), + cdef_large_value_mask)); + + uint16x8_t sec_min0 = vminq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_min1 = vminq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_min2 = vminq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_min3 = vminq_u16(sec_src[6], sec_src[7]); + sec_min0 = vminq_u16(sec_min0, sec_min1); + sec_min2 = vminq_u16(sec_min2, sec_min3); + sec_min0 = vminq_u16(sec_min0, sec_min2); + min = vminq_u16(min, sec_min0); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + res_s16 = vminq_s16(vmaxq_s16(res_s16, vreinterpretq_s16_u16(min)), + vreinterpretq_s16_u16(max)); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + vst1_u8(dst8, res_u8); + + in += CDEF_BSTRIDE; + dst8 += dstride; + } while (--h != 0); + } else { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + max = min = s; + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = load_unaligned_u16_4x2(in + po1, CDEF_BSTRIDE); + pri_src[1] = load_unaligned_u16_4x2(in - po1, CDEF_BSTRIDE); + + // Primary far taps + pri_src[2] = load_unaligned_u16_4x2(in + po2, CDEF_BSTRIDE); + pri_src[3] = load_unaligned_u16_4x2(in - po2, CDEF_BSTRIDE); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + // 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. + uint8x16_t pri_max0 = vmaxq_u8(vreinterpretq_u8_u16(pri_src[0]), + vreinterpretq_u8_u16(pri_src[1])); + uint8x16_t pri_max1 = vmaxq_u8(vreinterpretq_u8_u16(pri_src[2]), + vreinterpretq_u8_u16(pri_src[3])); + pri_max0 = vmaxq_u8(pri_max0, pri_max1); + max = vmaxq_u16(max, vandq_u16(vreinterpretq_u16_u8(pri_max0), + cdef_large_value_mask)); + + uint16x8_t pri_min1 = vminq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_min2 = vminq_u16(pri_src[2], pri_src[3]); + pri_min1 = vminq_u16(pri_min1, pri_min2); + min = vminq_u16(min, pri_min1); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = load_unaligned_u16_4x2(in + s1o1, CDEF_BSTRIDE); + sec_src[1] = load_unaligned_u16_4x2(in - s1o1, CDEF_BSTRIDE); + sec_src[2] = load_unaligned_u16_4x2(in + s2o1, CDEF_BSTRIDE); + sec_src[3] = load_unaligned_u16_4x2(in - s2o1, CDEF_BSTRIDE); + + // Secondary far taps + sec_src[4] = load_unaligned_u16_4x2(in + s1o2, CDEF_BSTRIDE); + sec_src[5] = load_unaligned_u16_4x2(in - s1o2, CDEF_BSTRIDE); + sec_src[6] = load_unaligned_u16_4x2(in + s2o2, CDEF_BSTRIDE); + sec_src[7] = load_unaligned_u16_4x2(in - s2o2, CDEF_BSTRIDE); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // 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. + uint8x16_t sec_max0 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[0]), + vreinterpretq_u8_u16(sec_src[1])); + uint8x16_t sec_max1 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[2]), + vreinterpretq_u8_u16(sec_src[3])); + uint8x16_t sec_max2 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[4]), + vreinterpretq_u8_u16(sec_src[5])); + uint8x16_t sec_max3 = vmaxq_u8(vreinterpretq_u8_u16(sec_src[6]), + vreinterpretq_u8_u16(sec_src[7])); + sec_max0 = vmaxq_u8(sec_max0, sec_max1); + sec_max2 = vmaxq_u8(sec_max2, sec_max3); + sec_max0 = vmaxq_u8(sec_max0, sec_max2); + max = vmaxq_u16(max, vandq_u16(vreinterpretq_u16_u8(sec_max0), + cdef_large_value_mask)); + + uint16x8_t sec_min0 = vminq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_min1 = vminq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_min2 = vminq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_min3 = vminq_u16(sec_src[6], sec_src[7]); + sec_min0 = vminq_u16(sec_min0, sec_min1); + sec_min2 = vminq_u16(sec_min2, sec_min3); + sec_min0 = vminq_u16(sec_min0, sec_min2); + min = vminq_u16(min, sec_min0); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + res_s16 = vminq_s16(vmaxq_s16(res_s16, vreinterpretq_s16_u16(min)), + vreinterpretq_s16_u16(max)); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + store_u8x4_strided_x2(dst8, dstride, res_u8); + + in += 2 * CDEF_BSTRIDE; + dst8 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} + +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) { + (void)sec_strength; + (void)sec_damping; + + const int po1 = cdef_directions[dir][0]; + const int po2 = cdef_directions[dir][1]; + const int *pri_taps = cdef_pri_taps[(pri_strength >> coeff_shift) & 1]; + + if (pri_strength) { + pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); + } + + if (block_width == 8) { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + + uint16x8_t tap[4]; + + // Primary near taps + tap[0] = vld1q_u16(in + po1); + tap[1] = vld1q_u16(in - po1); + + // Primary far taps + tap[2] = vld1q_u16(in + po2); + tap[3] = vld1q_u16(in - po2); + + primary_filter(s, tap, pri_taps, pri_strength, pri_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + vst1_u8(dst8, res_u8); + + in += CDEF_BSTRIDE; + dst8 += dstride; + } while (--h != 0); + + } else { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = load_unaligned_u16_4x2(in + po1, CDEF_BSTRIDE); + pri_src[1] = load_unaligned_u16_4x2(in - po1, CDEF_BSTRIDE); + + // Primary far taps + pri_src[2] = load_unaligned_u16_4x2(in + po2, CDEF_BSTRIDE); + pri_src[3] = load_unaligned_u16_4x2(in - po2, CDEF_BSTRIDE); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + store_u8x4_strided_x2(dst8, dstride, res_u8); + + in += 2 * CDEF_BSTRIDE; + dst8 += 2 * dstride; + h -= 2; + } while (h != 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) { + (void)pri_strength; + (void)pri_damping; + (void)coeff_shift; + + 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 *sec_taps = cdef_sec_taps; + + if (sec_strength) { + sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); + } + + if (block_width == 8) { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = vld1q_u16(in + s1o1); + sec_src[1] = vld1q_u16(in - s1o1); + sec_src[2] = vld1q_u16(in + s2o1); + sec_src[3] = vld1q_u16(in - s2o1); + + // Secondary far taps + sec_src[4] = vld1q_u16(in + s1o2); + sec_src[5] = vld1q_u16(in - s1o2); + sec_src[6] = vld1q_u16(in + s2o2); + sec_src[7] = vld1q_u16(in - s2o2); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + vst1_u8(dst8, res_u8); + + in += CDEF_BSTRIDE; + dst8 += dstride; + } while (--h != 0); + } else { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = load_unaligned_u16_4x2(in + s1o1, CDEF_BSTRIDE); + sec_src[1] = load_unaligned_u16_4x2(in - s1o1, CDEF_BSTRIDE); + sec_src[2] = load_unaligned_u16_4x2(in + s2o1, CDEF_BSTRIDE); + sec_src[3] = load_unaligned_u16_4x2(in - s2o1, CDEF_BSTRIDE); + + // Secondary far taps + sec_src[4] = load_unaligned_u16_4x2(in + s1o2, CDEF_BSTRIDE); + sec_src[5] = load_unaligned_u16_4x2(in - s1o2, CDEF_BSTRIDE); + sec_src[6] = load_unaligned_u16_4x2(in + s2o2, CDEF_BSTRIDE); + sec_src[7] = load_unaligned_u16_4x2(in - s2o2, CDEF_BSTRIDE); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res_s16 = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + const uint8x8_t res_u8 = vqmovun_s16(res_s16); + store_u8x4_strided_x2(dst8, dstride, res_u8); + + in += 2 * CDEF_BSTRIDE; + dst8 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} + +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) { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + const uint16x8_t s = vld1q_u16(in); + const uint8x8_t res = vqmovn_u16(s); + vst1_u8(dst8, res); + + in += CDEF_BSTRIDE; + dst8 += dstride; + } while (--h != 0); + } else { + uint8_t *dst8 = (uint8_t *)dest; + + int h = block_height; + do { + const uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + const uint8x8_t res = vqmovn_u16(s); + store_u8x4_strided_x2(dst8, dstride, res); + + in += 2 * CDEF_BSTRIDE; + dst8 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} + +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) { + 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 (pri_strength) { + pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); + } + if (sec_strength) { + sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); + } + + if (block_width == 8) { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + max = min = s; + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = vld1q_u16(in + po1); + pri_src[1] = vld1q_u16(in - po1); + + // Primary far taps + pri_src[2] = vld1q_u16(in + po2); + pri_src[3] = vld1q_u16(in - po2); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + uint16x8_t pri_min0 = vminq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_min1 = vminq_u16(pri_src[2], pri_src[3]); + pri_min0 = vminq_u16(pri_min0, pri_min1); + min = vminq_u16(min, pri_min0); + + /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ + pri_src[0] = vandq_u16(pri_src[0], cdef_large_value_mask); + pri_src[1] = vandq_u16(pri_src[1], cdef_large_value_mask); + pri_src[2] = vandq_u16(pri_src[2], cdef_large_value_mask); + pri_src[3] = vandq_u16(pri_src[3], cdef_large_value_mask); + + uint16x8_t pri_max0 = vmaxq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_max1 = vmaxq_u16(pri_src[2], pri_src[3]); + pri_max0 = vmaxq_u16(pri_max0, pri_max1); + max = vmaxq_u16(max, pri_max0); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = vld1q_u16(in + s1o1); + sec_src[1] = vld1q_u16(in - s1o1); + sec_src[2] = vld1q_u16(in + s2o1); + sec_src[3] = vld1q_u16(in - s2o1); + + // Secondary far taps + sec_src[4] = vld1q_u16(in + s1o2); + sec_src[5] = vld1q_u16(in - s1o2); + sec_src[6] = vld1q_u16(in + s2o2); + sec_src[7] = vld1q_u16(in - s2o2); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + uint16x8_t sec_min0 = vminq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_min1 = vminq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_min2 = vminq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_min3 = vminq_u16(sec_src[6], sec_src[7]); + sec_min0 = vminq_u16(sec_min0, sec_min1); + sec_min2 = vminq_u16(sec_min2, sec_min3); + sec_min0 = vminq_u16(sec_min0, sec_min2); + min = vminq_u16(min, sec_min0); + + /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ + sec_src[0] = vandq_u16(sec_src[0], cdef_large_value_mask); + sec_src[1] = vandq_u16(sec_src[1], cdef_large_value_mask); + sec_src[2] = vandq_u16(sec_src[2], cdef_large_value_mask); + sec_src[3] = vandq_u16(sec_src[3], cdef_large_value_mask); + sec_src[4] = vandq_u16(sec_src[4], cdef_large_value_mask); + sec_src[5] = vandq_u16(sec_src[5], cdef_large_value_mask); + sec_src[6] = vandq_u16(sec_src[6], cdef_large_value_mask); + sec_src[7] = vandq_u16(sec_src[7], cdef_large_value_mask); + + uint16x8_t sec_max0 = vmaxq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_max1 = vmaxq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_max2 = vmaxq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_max3 = vmaxq_u16(sec_src[6], sec_src[7]); + sec_max0 = vmaxq_u16(sec_max0, sec_max1); + sec_max2 = vmaxq_u16(sec_max2, sec_max3); + sec_max0 = vmaxq_u16(sec_max0, sec_max2); + max = vmaxq_u16(max, sec_max0); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + res = vminq_s16(vmaxq_s16(res, vreinterpretq_s16_u16(min)), + vreinterpretq_s16_u16(max)); + + vst1q_u16(dst16, vreinterpretq_u16_s16(res)); + + in += CDEF_BSTRIDE; + dst16 += dstride; + } while (--h != 0); + } else { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + max = min = s; + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = load_unaligned_u16_4x2(in + po1, CDEF_BSTRIDE); + pri_src[1] = load_unaligned_u16_4x2(in - po1, CDEF_BSTRIDE); + + // Primary far taps + pri_src[2] = load_unaligned_u16_4x2(in + po2, CDEF_BSTRIDE); + pri_src[3] = load_unaligned_u16_4x2(in - po2, CDEF_BSTRIDE); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + uint16x8_t pri_min1 = vminq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_min2 = vminq_u16(pri_src[2], pri_src[3]); + pri_min1 = vminq_u16(pri_min1, pri_min2); + min = vminq_u16(min, pri_min1); + + /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ + pri_src[0] = vandq_u16(pri_src[0], cdef_large_value_mask); + pri_src[1] = vandq_u16(pri_src[1], cdef_large_value_mask); + pri_src[2] = vandq_u16(pri_src[2], cdef_large_value_mask); + pri_src[3] = vandq_u16(pri_src[3], cdef_large_value_mask); + uint16x8_t pri_max0 = vmaxq_u16(pri_src[0], pri_src[1]); + uint16x8_t pri_max1 = vmaxq_u16(pri_src[2], pri_src[3]); + pri_max0 = vmaxq_u16(pri_max0, pri_max1); + max = vmaxq_u16(max, pri_max0); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = load_unaligned_u16_4x2(in + s1o1, CDEF_BSTRIDE); + sec_src[1] = load_unaligned_u16_4x2(in - s1o1, CDEF_BSTRIDE); + sec_src[2] = load_unaligned_u16_4x2(in + s2o1, CDEF_BSTRIDE); + sec_src[3] = load_unaligned_u16_4x2(in - s2o1, CDEF_BSTRIDE); + + // Secondary far taps + sec_src[4] = load_unaligned_u16_4x2(in + s1o2, CDEF_BSTRIDE); + sec_src[5] = load_unaligned_u16_4x2(in - s1o2, CDEF_BSTRIDE); + sec_src[6] = load_unaligned_u16_4x2(in + s2o2, CDEF_BSTRIDE); + sec_src[7] = load_unaligned_u16_4x2(in - s2o2, CDEF_BSTRIDE); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + uint16x8_t sec_min0 = vminq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_min1 = vminq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_min2 = vminq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_min3 = vminq_u16(sec_src[6], sec_src[7]); + sec_min0 = vminq_u16(sec_min0, sec_min1); + sec_min2 = vminq_u16(sec_min2, sec_min3); + sec_min0 = vminq_u16(sec_min0, sec_min2); + min = vminq_u16(min, sec_min0); + + /* Convert CDEF_VERY_LARGE to 0 before calculating max. */ + sec_src[0] = vandq_u16(sec_src[0], cdef_large_value_mask); + sec_src[1] = vandq_u16(sec_src[1], cdef_large_value_mask); + sec_src[2] = vandq_u16(sec_src[2], cdef_large_value_mask); + sec_src[3] = vandq_u16(sec_src[3], cdef_large_value_mask); + sec_src[4] = vandq_u16(sec_src[4], cdef_large_value_mask); + sec_src[5] = vandq_u16(sec_src[5], cdef_large_value_mask); + sec_src[6] = vandq_u16(sec_src[6], cdef_large_value_mask); + sec_src[7] = vandq_u16(sec_src[7], cdef_large_value_mask); + + uint16x8_t sec_max0 = vmaxq_u16(sec_src[0], sec_src[1]); + uint16x8_t sec_max1 = vmaxq_u16(sec_src[2], sec_src[3]); + uint16x8_t sec_max2 = vmaxq_u16(sec_src[4], sec_src[5]); + uint16x8_t sec_max3 = vmaxq_u16(sec_src[6], sec_src[7]); + sec_max0 = vmaxq_u16(sec_max0, sec_max1); + sec_max2 = vmaxq_u16(sec_max2, sec_max3); + sec_max0 = vmaxq_u16(sec_max0, sec_max2); + max = vmaxq_u16(max, sec_max0); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + res = vminq_s16(vmaxq_s16(res, vreinterpretq_s16_u16(min)), + vreinterpretq_s16_u16(max)); + + store_u16x4_strided_x2(dst16, dstride, vreinterpretq_u16_s16(res)); + + in += 2 * CDEF_BSTRIDE; + dst16 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} + +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) { + (void)sec_strength; + (void)sec_damping; + + const int po1 = cdef_directions[dir][0]; + const int po2 = cdef_directions[dir][1]; + const int *pri_taps = cdef_pri_taps[(pri_strength >> coeff_shift) & 1]; + + if (pri_strength) { + pri_damping = AOMMAX(0, pri_damping - get_msb(pri_strength)); + } + + if (block_width == 8) { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + + uint16x8_t tap[4]; + + // Primary near taps + tap[0] = vld1q_u16(in + po1); + tap[1] = vld1q_u16(in - po1); + + // Primary far taps + tap[2] = vld1q_u16(in + po2); + tap[3] = vld1q_u16(in - po2); + + primary_filter(s, tap, pri_taps, pri_strength, pri_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + vst1q_u16(dst16, vreinterpretq_u16_s16(res)); + + in += CDEF_BSTRIDE; + dst16 += dstride; + } while (--h != 0); + } else { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + + uint16x8_t pri_src[4]; + + // Primary near taps + pri_src[0] = load_unaligned_u16_4x2(in + po1, CDEF_BSTRIDE); + pri_src[1] = load_unaligned_u16_4x2(in - po1, CDEF_BSTRIDE); + + // Primary far taps + pri_src[2] = load_unaligned_u16_4x2(in + po2, CDEF_BSTRIDE); + pri_src[3] = load_unaligned_u16_4x2(in - po2, CDEF_BSTRIDE); + + primary_filter(s, pri_src, pri_taps, pri_strength, pri_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + store_u16x4_strided_x2(dst16, dstride, vreinterpretq_u16_s16(res)); + + in += 2 * CDEF_BSTRIDE; + dst16 += 2 * dstride; + h -= 2; + } while (h != 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) { + (void)pri_strength; + (void)pri_damping; + (void)coeff_shift; + + 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 *sec_taps = cdef_sec_taps; + + if (sec_strength) { + sec_damping = AOMMAX(0, sec_damping - get_msb(sec_strength)); + } + + if (block_width == 8) { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = vld1q_u16(in); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = vld1q_u16(in + s1o1); + sec_src[1] = vld1q_u16(in - s1o1); + sec_src[2] = vld1q_u16(in + s2o1); + sec_src[3] = vld1q_u16(in - s2o1); + + // Secondary far taps + sec_src[4] = vld1q_u16(in + s1o2); + sec_src[5] = vld1q_u16(in - s1o2); + sec_src[6] = vld1q_u16(in + s2o2); + sec_src[7] = vld1q_u16(in - s2o2); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + vst1q_u16(dst16, vreinterpretq_u16_s16(res)); + + in += CDEF_BSTRIDE; + dst16 += dstride; + } while (--h != 0); + } else { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + int16x8_t sum = vdupq_n_s16(0); + uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + + uint16x8_t sec_src[8]; + + // Secondary near taps + sec_src[0] = load_unaligned_u16_4x2(in + s1o1, CDEF_BSTRIDE); + sec_src[1] = load_unaligned_u16_4x2(in - s1o1, CDEF_BSTRIDE); + sec_src[2] = load_unaligned_u16_4x2(in + s2o1, CDEF_BSTRIDE); + sec_src[3] = load_unaligned_u16_4x2(in - s2o1, CDEF_BSTRIDE); + + // Secondary far taps + sec_src[4] = load_unaligned_u16_4x2(in + s1o2, CDEF_BSTRIDE); + sec_src[5] = load_unaligned_u16_4x2(in - s1o2, CDEF_BSTRIDE); + sec_src[6] = load_unaligned_u16_4x2(in + s2o2, CDEF_BSTRIDE); + sec_src[7] = load_unaligned_u16_4x2(in - s2o2, CDEF_BSTRIDE); + + secondary_filter(s, sec_src, sec_taps, sec_strength, sec_damping, &sum); + + // res = s + ((sum - (sum < 0) + 8) >> 4) + sum = + vaddq_s16(sum, vreinterpretq_s16_u16(vcltq_s16(sum, vdupq_n_s16(0)))); + const int16x8_t res = vrsraq_n_s16(vreinterpretq_s16_u16(s), sum, 4); + + store_u16x4_strided_x2(dst16, dstride, vreinterpretq_u16_s16(res)); + + in += 2 * CDEF_BSTRIDE; + dst16 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} + +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) { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + const uint16x8_t s = vld1q_u16(in); + vst1q_u16(dst16, s); + + in += CDEF_BSTRIDE; + dst16 += dstride; + } while (--h != 0); + } else { + uint16_t *dst16 = (uint16_t *)dest; + + int h = block_height; + do { + const uint16x8_t s = load_unaligned_u16_4x2(in, CDEF_BSTRIDE); + store_u16x4_strided_x2(dst16, dstride, s); + + in += 2 * CDEF_BSTRIDE; + dst16 += 2 * dstride; + h -= 2; + } while (h != 0); + } +} |