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Diffstat (limited to '')
-rw-r--r-- | third_party/aom/av1/common/arm/compound_convolve_neon.c | 2719 |
1 files changed, 2719 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/arm/compound_convolve_neon.c b/third_party/aom/av1/common/arm/compound_convolve_neon.c new file mode 100644 index 0000000000..6a596234dc --- /dev/null +++ b/third_party/aom/av1/common/arm/compound_convolve_neon.c @@ -0,0 +1,2719 @@ +/* + * Copyright (c) 2018, 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 "aom_dsp/arm/mem_neon.h" +#include "aom_dsp/arm/transpose_neon.h" +#include "av1/common/arm/compound_convolve_neon.h" +#include "config/aom_config.h" +#include "config/av1_rtcd.h" + +static INLINE int16x4_t convolve4_4_2d_h(const int16x4_t s0, const int16x4_t s1, + const int16x4_t s2, const int16x4_t s3, + const int16x4_t x_filter, + const int16x4_t horiz_const) { + int16x4_t sum = horiz_const; + sum = vmla_lane_s16(sum, s0, x_filter, 0); + sum = vmla_lane_s16(sum, s1, x_filter, 1); + sum = vmla_lane_s16(sum, s2, x_filter, 2); + sum = vmla_lane_s16(sum, s3, x_filter, 3); + + // We halved the convolution filter values so -1 from the right shift. + return vshr_n_s16(sum, ROUND0_BITS - 1); +} + +static INLINE int16x8_t convolve8_8_2d_h(const int16x8_t s0, const int16x8_t s1, + const int16x8_t s2, const int16x8_t s3, + const int16x8_t s4, const int16x8_t s5, + const int16x8_t s6, const int16x8_t s7, + const int16x8_t x_filter, + const int16x8_t horiz_const) { + const int16x4_t x_filter_0_3 = vget_low_s16(x_filter); + const int16x4_t x_filter_4_7 = vget_high_s16(x_filter); + + int16x8_t sum = horiz_const; + sum = vmlaq_lane_s16(sum, s0, x_filter_0_3, 0); + sum = vmlaq_lane_s16(sum, s1, x_filter_0_3, 1); + sum = vmlaq_lane_s16(sum, s2, x_filter_0_3, 2); + sum = vmlaq_lane_s16(sum, s3, x_filter_0_3, 3); + sum = vmlaq_lane_s16(sum, s4, x_filter_4_7, 0); + sum = vmlaq_lane_s16(sum, s5, x_filter_4_7, 1); + sum = vmlaq_lane_s16(sum, s6, x_filter_4_7, 2); + sum = vmlaq_lane_s16(sum, s7, x_filter_4_7, 3); + + // We halved the convolution filter values so -1 from the right shift. + return vshrq_n_s16(sum, ROUND0_BITS - 1); +} + +static INLINE void dist_wtd_convolve_2d_horiz_neon( + const uint8_t *src, int src_stride, int16_t *im_block, const int im_stride, + const int16_t *x_filter_ptr, const int im_h, int w) { + const int bd = 8; + + const uint8_t *src_ptr = src; + int16_t *dst_ptr = im_block; + int dst_stride = im_stride; + int height = im_h; + + if (w == 4) { + // A shim of 1 << ((ROUND0_BITS - 1) - 1) enables us to use non-rounding + // shifts - which are generally faster than rounding shifts on modern CPUs. + // (The extra -1 is needed because we halved the filter values.) + const int16x4_t horiz_const = vdup_n_s16((1 << (bd + FILTER_BITS - 2)) + + (1 << ((ROUND0_BITS - 1) - 1))); + // 4-tap filters are used for blocks having width <= 4. + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1); + + src_ptr += 2; + + do { + uint8x8_t t0 = vld1_u8(src_ptr); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + + __builtin_prefetch(dst_ptr); + + int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4 + int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5 + int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6 + + int16x4_t d0 = convolve4_4_2d_h(s0, s1, s2, s3, x_filter, horiz_const); + + vst1_s16(dst_ptr, d0); + + src_ptr += src_stride; + dst_ptr += dst_stride; + } while (--height != 0); + } else { + // A shim of 1 << ((ROUND0_BITS - 1) - 1) enables us to use non-rounding + // shifts - which are generally faster than rounding shifts on modern CPUs. + // (The extra -1 is needed because we halved the filter values.) + const int16x8_t horiz_const = vdupq_n_s16((1 << (bd + FILTER_BITS - 2)) + + (1 << ((ROUND0_BITS - 1) - 1))); + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1); + +#if AOM_ARCH_AARCH64 + do { + const uint8_t *s; + int16_t *d = dst_ptr; + int width = w; + + __builtin_prefetch(src_ptr + 0 * src_stride); + __builtin_prefetch(src_ptr + 1 * src_stride); + __builtin_prefetch(src_ptr + 2 * src_stride); + __builtin_prefetch(src_ptr + 3 * src_stride); + __builtin_prefetch(src_ptr + 4 * src_stride); + __builtin_prefetch(src_ptr + 5 * src_stride); + __builtin_prefetch(src_ptr + 6 * src_stride); + __builtin_prefetch(src_ptr + 7 * src_stride); + + uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; + load_u8_8x8(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + s = src_ptr + 7; + + __builtin_prefetch(dst_ptr + 0 * dst_stride); + __builtin_prefetch(dst_ptr + 1 * dst_stride); + __builtin_prefetch(dst_ptr + 2 * dst_stride); + __builtin_prefetch(dst_ptr + 3 * dst_stride); + __builtin_prefetch(dst_ptr + 4 * dst_stride); + __builtin_prefetch(dst_ptr + 5 * dst_stride); + __builtin_prefetch(dst_ptr + 6 * dst_stride); + __builtin_prefetch(dst_ptr + 7 * dst_stride); + + do { + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + int16x8_t d0 = convolve8_8_2d_h(s0, s1, s2, s3, s4, s5, s6, s7, + x_filter, horiz_const); + int16x8_t d1 = convolve8_8_2d_h(s1, s2, s3, s4, s5, s6, s7, s8, + x_filter, horiz_const); + int16x8_t d2 = convolve8_8_2d_h(s2, s3, s4, s5, s6, s7, s8, s9, + x_filter, horiz_const); + int16x8_t d3 = convolve8_8_2d_h(s3, s4, s5, s6, s7, s8, s9, s10, + x_filter, horiz_const); + int16x8_t d4 = convolve8_8_2d_h(s4, s5, s6, s7, s8, s9, s10, s11, + x_filter, horiz_const); + int16x8_t d5 = convolve8_8_2d_h(s5, s6, s7, s8, s9, s10, s11, s12, + x_filter, horiz_const); + int16x8_t d6 = convolve8_8_2d_h(s6, s7, s8, s9, s10, s11, s12, s13, + x_filter, horiz_const); + int16x8_t d7 = convolve8_8_2d_h(s7, s8, s9, s10, s11, s12, s13, s14, + x_filter, horiz_const); + + transpose_elems_inplace_s16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7); + store_s16_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8; + d += 8; + width -= 8; + } while (width > 0); + src_ptr += 8 * src_stride; + dst_ptr += 8 * dst_stride; + height -= 8; + } while (height > 8); +#endif // AOM_ARCH_AARCH64 + + do { + const uint8_t *s; + int16_t *d = dst_ptr; + int width = w; + + uint8x8_t t0 = vld1_u8(src_ptr); + int16x8_t s0 = + vreinterpretq_s16_u16(vmovl_u8(t0)); // a0 a1 a2 a3 a4 a5 a6 a7 + + s = src_ptr + 8; + __builtin_prefetch(dst_ptr); + + do { + t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15 + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8 + int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9 + int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10 + int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11 + int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12 + int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13 + int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14 + + int16x8_t d0 = convolve8_8_2d_h(s0, s1, s2, s3, s4, s5, s6, s7, + x_filter, horiz_const); + vst1q_s16(d, d0); + + s0 = s8; + s += 8; + d += 8; + width -= 8; + } while (width > 0); + src_ptr += src_stride; + dst_ptr += dst_stride; + } while (--height != 0); + } +} + +void av1_dist_wtd_convolve_2d_neon(const uint8_t *src, int src_stride, + uint8_t *dst8, int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const InterpFilterParams *filter_params_y, + const int subpel_x_qn, const int subpel_y_qn, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + DECLARE_ALIGNED(16, int16_t, + im_block[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]); + + const int y_filter_taps = get_filter_tap(filter_params_y, subpel_y_qn); + const int clamped_y_taps = y_filter_taps < 6 ? 6 : y_filter_taps; + + const int im_h = h + clamped_y_taps - 1; + const int im_stride = MAX_SB_SIZE; + const int vert_offset = clamped_y_taps / 2 - 1; + const int horiz_offset = filter_params_x->taps / 2 - 1; + const uint8_t *src_ptr = src - vert_offset * src_stride - horiz_offset; + const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_qn & SUBPEL_MASK); + const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_qn & SUBPEL_MASK); + + const int16x8_t y_filter = vld1q_s16(y_filter_ptr); + + dist_wtd_convolve_2d_horiz_neon(src_ptr, src_stride, im_block, im_stride, + x_filter_ptr, im_h, w); + + if (clamped_y_taps == 6) { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_2d_vert_6tap_dist_wtd_avg_neon( + im_block, im_stride, dst8, dst8_stride, conv_params, y_filter, h, + w); + } else { + dist_wtd_convolve_2d_vert_6tap_avg_neon(im_block, im_stride, dst8, + dst8_stride, conv_params, + y_filter, h, w); + } + } else { + dist_wtd_convolve_2d_vert_6tap_neon(im_block, im_stride, conv_params, + y_filter, h, w); + } + } else { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_2d_vert_8tap_dist_wtd_avg_neon( + im_block, im_stride, dst8, dst8_stride, conv_params, y_filter, h, + w); + } else { + dist_wtd_convolve_2d_vert_8tap_avg_neon(im_block, im_stride, dst8, + dst8_stride, conv_params, + y_filter, h, w); + } + } else { + dist_wtd_convolve_2d_vert_8tap_neon(im_block, im_stride, conv_params, + y_filter, h, w); + } + } +} + +static INLINE void dist_wtd_convolve_2d_copy_dist_wtd_avg_neon( + const uint8_t *src, int src_stride, uint8_t *dst8, int dst8_stride, int w, + int h, ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const uint16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const uint16x8_t round_offset_vec = vdupq_n_u16(round_offset); + const uint8x8_t shift_by_bits = vdup_n_u8(1 << (FILTER_BITS - ROUND0_BITS)); + + const uint16_t fwd_offset = conv_params->fwd_offset; + const uint16_t bck_offset = conv_params->bck_offset; + + CONV_BUF_TYPE *dst = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(src, src_stride, &s0, &s1, &s2, &s3); + + uint16x4_t d0 = + vget_low_u16(vmlal_u8(round_offset_vec, s0, shift_by_bits)); + uint16x4_t d1 = + vget_low_u16(vmlal_u8(round_offset_vec, s1, shift_by_bits)); + uint16x4_t d2 = + vget_low_u16(vmlal_u8(round_offset_vec, s2, shift_by_bits)); + uint16x4_t d3 = + vget_low_u16(vmlal_u8(round_offset_vec, s3, shift_by_bits)); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(dst, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_dist_wtd_avg_4x4( + dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, bck_offset, + vreinterpretq_s16_u16(round_offset_vec), &d01, &d23); + + store_u8x4_strided_x2(dst8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(dst8 + 2 * dst8_stride, dst8_stride, d23); + + src += 4 * src_stride; + dst += 4 * dst_stride; + dst8 += 4 * dst8_stride; + height -= 4; + } while (height != 0); + } else { + do { + const uint8_t *s = src; + CONV_BUF_TYPE *d = dst; + uint8_t *d_u8 = dst8; + int width = w; + + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(s, src_stride, &s0, &s1, &s2, &s3); + + uint16x8_t d0 = vmlal_u8(round_offset_vec, s0, shift_by_bits); + uint16x8_t d1 = vmlal_u8(round_offset_vec, s1, shift_by_bits); + uint16x8_t d2 = vmlal_u8(round_offset_vec, s2, shift_by_bits); + uint16x8_t d3 = vmlal_u8(round_offset_vec, s3, shift_by_bits); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_dist_wtd_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, + vreinterpretq_s16_u16(round_offset_vec), + &d0_u8, &d1_u8, &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src += 4 * src_stride; + dst += 4 * dst_stride; + dst8 += 4 * dst8_stride; + height -= 4; + } while (height != 0); + } +} + +static INLINE void dist_wtd_convolve_2d_copy_avg_neon( + const uint8_t *src, int src_stride, uint8_t *dst8, int dst8_stride, int w, + int h, ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const uint16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const uint16x8_t round_offset_vec = vdupq_n_u16(round_offset); + const uint8x8_t shift_by_bits = vdup_n_u8(1 << (FILTER_BITS - ROUND0_BITS)); + + CONV_BUF_TYPE *dst = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(src, src_stride, &s0, &s1, &s2, &s3); + + uint16x4_t d0 = + vget_low_u16(vmlal_u8(round_offset_vec, s0, shift_by_bits)); + uint16x4_t d1 = + vget_low_u16(vmlal_u8(round_offset_vec, s1, shift_by_bits)); + uint16x4_t d2 = + vget_low_u16(vmlal_u8(round_offset_vec, s2, shift_by_bits)); + uint16x4_t d3 = + vget_low_u16(vmlal_u8(round_offset_vec, s3, shift_by_bits)); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(dst, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_basic_avg_4x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + vreinterpretq_s16_u16(round_offset_vec), &d01, + &d23); + + store_u8x4_strided_x2(dst8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(dst8 + 2 * dst8_stride, dst8_stride, d23); + + src += 4 * src_stride; + dst += 4 * dst_stride; + dst8 += 4 * dst8_stride; + height -= 4; + } while (height != 0); + } else { + do { + const uint8_t *s = src; + CONV_BUF_TYPE *d = dst; + uint8_t *d_u8 = dst8; + int width = w; + + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(s, src_stride, &s0, &s1, &s2, &s3); + + uint16x8_t d0 = vmlal_u8(round_offset_vec, s0, shift_by_bits); + uint16x8_t d1 = vmlal_u8(round_offset_vec, s1, shift_by_bits); + uint16x8_t d2 = vmlal_u8(round_offset_vec, s2, shift_by_bits); + uint16x8_t d3 = vmlal_u8(round_offset_vec, s3, shift_by_bits); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_basic_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + vreinterpretq_s16_u16(round_offset_vec), &d0_u8, + &d1_u8, &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src += 4 * src_stride; + dst += 4 * dst_stride; + dst8 += 4 * dst8_stride; + height -= 4; + } while (height != 0); + } +} + +static INLINE void dist_wtd_convolve_2d_copy_neon(const uint8_t *src, + int src_stride, int w, int h, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const uint16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const uint16x8_t round_offset_vec = vdupq_n_u16(round_offset); + const uint8x8_t shift_by_bits = vdup_n_u8(1 << (FILTER_BITS - ROUND0_BITS)); + + CONV_BUF_TYPE *dst = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(src, src_stride, &s0, &s1, &s2, &s3); + + uint16x4_t d0 = + vget_low_u16(vmlal_u8(round_offset_vec, s0, shift_by_bits)); + uint16x4_t d1 = + vget_low_u16(vmlal_u8(round_offset_vec, s1, shift_by_bits)); + uint16x4_t d2 = + vget_low_u16(vmlal_u8(round_offset_vec, s2, shift_by_bits)); + uint16x4_t d3 = + vget_low_u16(vmlal_u8(round_offset_vec, s3, shift_by_bits)); + + store_u16_4x4(dst, dst_stride, d0, d1, d2, d3); + + src += 4 * src_stride; + dst += 4 * dst_stride; + height -= 4; + } while (height != 0); + } else { + do { + const uint8_t *s = src; + CONV_BUF_TYPE *d = dst; + int width = w; + + do { + uint8x8_t s0, s1, s2, s3; + load_u8_8x4(s, src_stride, &s0, &s1, &s2, &s3); + + uint16x8_t d0 = vmlal_u8(round_offset_vec, s0, shift_by_bits); + uint16x8_t d1 = vmlal_u8(round_offset_vec, s1, shift_by_bits); + uint16x8_t d2 = vmlal_u8(round_offset_vec, s2, shift_by_bits); + uint16x8_t d3 = vmlal_u8(round_offset_vec, s3, shift_by_bits); + + store_u16_8x4(d, dst_stride, d0, d1, d2, d3); + + s += 8; + d += 8; + width -= 8; + } while (width != 0); + src += 4 * src_stride; + dst += 4 * dst_stride; + height -= 4; + } while (height != 0); + } +} + +void av1_dist_wtd_convolve_2d_copy_neon(const uint8_t *src, int src_stride, + uint8_t *dst8, int dst8_stride, int w, + int h, ConvolveParams *conv_params) { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_2d_copy_dist_wtd_avg_neon( + src, src_stride, dst8, dst8_stride, w, h, conv_params); + } else { + dist_wtd_convolve_2d_copy_avg_neon(src, src_stride, dst8, dst8_stride, w, + h, conv_params); + } + } else { + dist_wtd_convolve_2d_copy_neon(src, src_stride, w, h, conv_params); + } +} + +static INLINE uint16x4_t convolve4_4_x(const int16x4_t s0, const int16x4_t s1, + const int16x4_t s2, const int16x4_t s3, + const int16x4_t x_filter, + const int16x4_t round_offset) { + int16x4_t sum = vmul_lane_s16(s0, x_filter, 0); + sum = vmla_lane_s16(sum, s1, x_filter, 1); + sum = vmla_lane_s16(sum, s2, x_filter, 2); + sum = vmla_lane_s16(sum, s3, x_filter, 3); + + // We halved the convolution filter values so -1 from the right shift. + int16x4_t res = vrsra_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpret_u16_s16(res); +} + +static INLINE uint16x8_t convolve8_8_x(const int16x8_t s0, const int16x8_t s1, + const int16x8_t s2, const int16x8_t s3, + const int16x8_t s4, const int16x8_t s5, + const int16x8_t s6, const int16x8_t s7, + const int16x8_t x_filter, + const int16x8_t round_offset) { + const int16x4_t x_filter_0_3 = vget_low_s16(x_filter); + const int16x4_t x_filter_4_7 = vget_high_s16(x_filter); + + int16x8_t sum = vmulq_lane_s16(s0, x_filter_0_3, 0); + sum = vmlaq_lane_s16(sum, s1, x_filter_0_3, 1); + sum = vmlaq_lane_s16(sum, s2, x_filter_0_3, 2); + sum = vmlaq_lane_s16(sum, s3, x_filter_0_3, 3); + sum = vmlaq_lane_s16(sum, s4, x_filter_4_7, 0); + sum = vmlaq_lane_s16(sum, s5, x_filter_4_7, 1); + sum = vmlaq_lane_s16(sum, s6, x_filter_4_7, 2); + sum = vmlaq_lane_s16(sum, s7, x_filter_4_7, 3); + + // We halved the convolution filter values so -1 from the right shift. + int16x8_t res = vrsraq_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpretq_u16_s16(res); +} + +static INLINE void dist_wtd_convolve_x_dist_wtd_avg_neon( + const uint8_t *src, int src_stride, uint8_t *dst8, int dst8_stride, int w, + int h, const InterpFilterParams *filter_params_x, const int subpel_x_qn, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + const uint16_t fwd_offset = conv_params->fwd_offset; + const uint16_t bck_offset = conv_params->bck_offset; + + // Horizontal filter. + const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_qn & SUBPEL_MASK); + + const int horiz_offset = filter_params_x->taps / 2 - 1; + const uint8_t *src_ptr = src - horiz_offset; + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + uint8_t *dst8_ptr = dst8; + int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + // 4-tap filters are used for blocks having width <= 4. + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1); + + src_ptr += 2; + + do { + uint8x8_t t0 = vld1_u8(src_ptr); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + + __builtin_prefetch(dst_ptr); + __builtin_prefetch(dst8_ptr); + + int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4 + int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5 + int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6 + + uint16x4_t d0 = convolve4_4_x(s0, s1, s2, s3, x_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0 = vld1_u16(dst_ptr); + + uint8x8_t d01; + compute_dist_wtd_avg_4x1(dd0, d0, fwd_offset, bck_offset, + vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(dst8_ptr, d01); + + src_ptr += src_stride; + dst_ptr += dst_stride; + dst8_ptr += dst8_stride; + } while (--height != 0); + } else { + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1); + +#if AOM_ARCH_AARCH64 + while (height >= 8) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int width = w; + + uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + __builtin_prefetch(d + 4 * dst_stride); + __builtin_prefetch(d + 5 * dst_stride); + __builtin_prefetch(d + 6 * dst_stride); + __builtin_prefetch(d + 7 * dst_stride); + + s += 7; + + do { + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_x(s1, s2, s3, s4, s5, s6, s7, s8, x_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_x(s2, s3, s4, s5, s6, s7, s8, s9, x_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_x(s3, s4, s5, s6, s7, s8, s9, s10, x_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_x(s4, s5, s6, s7, s8, s9, s10, s11, + x_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_x(s5, s6, s7, s8, s9, s10, s11, s12, + x_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_x(s6, s7, s8, s9, s10, s11, s12, s13, + x_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_x(s7, s8, s9, s10, s11, s12, s13, s14, + x_filter, round_offset_vec); + + transpose_elems_inplace_u16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_dist_wtd_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, round_offset_vec, &d0_u8, &d1_u8, + &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_dist_wtd_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, fwd_offset, + bck_offset, round_offset_vec, &d4_u8, &d5_u8, + &d6_u8, &d7_u8); + + store_u8_8x4(d_u8 + 4 * dst8_stride, dst8_stride, d4_u8, d5_u8, d6_u8, + d7_u8); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src_ptr += 8 * src_stride; + dst_ptr += 8 * dst_stride; + dst8_ptr += 8 * dst8_stride; + height -= 8; + } +#endif // AOM_ARCH_AARCH64 + + while (height > 0) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int width = w; + + uint8x8_t t0 = vld1_u8(s); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + __builtin_prefetch(d); + + s += 8; + + do { + t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15 + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8 + int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9 + int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10 + int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11 + int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12 + int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13 + int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14 + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_dist_wtd_avg_8x1(dd0, d0, fwd_offset, bck_offset, + round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + + s0 = s8; + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src_ptr += src_stride; + dst_ptr += dst_stride; + dst8_ptr += dst8_stride; + height--; + } + } +} + +static INLINE void dist_wtd_convolve_x_avg_neon( + const uint8_t *src, int src_stride, uint8_t *dst8, int dst8_stride, int w, + int h, const InterpFilterParams *filter_params_x, const int subpel_x_qn, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + // Horizontal filter. + const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_qn & SUBPEL_MASK); + + const int horiz_offset = filter_params_x->taps / 2 - 1; + const uint8_t *src_ptr = src - horiz_offset; + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + uint8_t *dst8_ptr = dst8; + int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + // 4-tap filters are used for blocks having width <= 4. + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1); + + src_ptr += 2; + + do { + uint8x8_t t0 = vld1_u8(src_ptr); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + + __builtin_prefetch(dst_ptr); + __builtin_prefetch(dst8_ptr); + + int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4 + int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5 + int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6 + + uint16x4_t d0 = convolve4_4_x(s0, s1, s2, s3, x_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0 = vld1_u16(dst_ptr); + + uint8x8_t d01; + compute_basic_avg_4x1(dd0, d0, vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(dst8_ptr, d01); + + src_ptr += src_stride; + dst_ptr += dst_stride; + dst8_ptr += dst8_stride; + } while (--height != 0); + } else { + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1); + +#if AOM_ARCH_AARCH64 + while (height >= 8) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int width = w; + + uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + __builtin_prefetch(d + 4 * dst_stride); + __builtin_prefetch(d + 5 * dst_stride); + __builtin_prefetch(d + 6 * dst_stride); + __builtin_prefetch(d + 7 * dst_stride); + + s += 7; + + do { + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_x(s1, s2, s3, s4, s5, s6, s7, s8, x_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_x(s2, s3, s4, s5, s6, s7, s8, s9, x_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_x(s3, s4, s5, s6, s7, s8, s9, s10, x_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_x(s4, s5, s6, s7, s8, s9, s10, s11, + x_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_x(s5, s6, s7, s8, s9, s10, s11, s12, + x_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_x(s6, s7, s8, s9, s10, s11, s12, s13, + x_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_x(s7, s8, s9, s10, s11, s12, s13, s14, + x_filter, round_offset_vec); + + transpose_elems_inplace_u16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_basic_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + round_offset_vec, &d0_u8, &d1_u8, &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_basic_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, + round_offset_vec, &d4_u8, &d5_u8, &d6_u8, &d7_u8); + + store_u8_8x4(d_u8 + 4 * dst8_stride, dst8_stride, d4_u8, d5_u8, d6_u8, + d7_u8); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src_ptr += 8 * src_stride; + dst_ptr += 8 * dst_stride; + dst8_ptr += 8 * dst8_stride; + height -= 8; + } +#endif // AOM_ARCH_AARCH64 + + while (height > 0) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int width = w; + + uint8x8_t t0 = vld1_u8(s); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + __builtin_prefetch(d); + + s += 8; + + do { + t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15 + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8 + int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9 + int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10 + int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11 + int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12 + int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13 + int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14 + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_basic_avg_8x1(dd0, d0, round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + + s0 = s8; + s += 8; + d += 8; + d_u8 += 8; + width -= 8; + } while (width != 0); + src_ptr += src_stride; + dst_ptr += dst_stride; + dst8_ptr += dst8_stride; + height--; + } + } +} + +static INLINE void dist_wtd_convolve_x_neon( + const uint8_t *src, int src_stride, int w, int h, + const InterpFilterParams *filter_params_x, const int subpel_x_qn, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + // Horizontal filter. + const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_x, subpel_x_qn & SUBPEL_MASK); + + const int horiz_offset = filter_params_x->taps / 2 - 1; + const uint8_t *src_ptr = src - horiz_offset; + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + int dst_stride = conv_params->dst_stride; + int height = h; + + if (w == 4) { + // 4-tap filters are used for blocks having width <= 4. + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1); + + src_ptr += 2; + + do { + uint8x8_t t0 = vld1_u8(src_ptr); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0))); + + __builtin_prefetch(dst_ptr); + + int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4 + int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5 + int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6 + + uint16x4_t d0 = convolve4_4_x(s0, s1, s2, s3, x_filter, + vget_low_s16(round_offset_vec)); + + vst1_u16(dst_ptr, d0); + + src_ptr += src_stride; + dst_ptr += dst_stride; + } while (--height != 0); + } else { + // Filter values are even, so halve to reduce intermediate precision reqs. + const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1); + +#if AOM_ARCH_AARCH64 + while (height >= 8) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + int width = w; + + uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + __builtin_prefetch(d + 4 * dst_stride); + __builtin_prefetch(d + 5 * dst_stride); + __builtin_prefetch(d + 6 * dst_stride); + __builtin_prefetch(d + 7 * dst_stride); + + s += 7; + + do { + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_x(s1, s2, s3, s4, s5, s6, s7, s8, x_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_x(s2, s3, s4, s5, s6, s7, s8, s9, x_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_x(s3, s4, s5, s6, s7, s8, s9, s10, x_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_x(s4, s5, s6, s7, s8, s9, s10, s11, + x_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_x(s5, s6, s7, s8, s9, s10, s11, s12, + x_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_x(s6, s7, s8, s9, s10, s11, s12, s13, + x_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_x(s7, s8, s9, s10, s11, s12, s13, s14, + x_filter, round_offset_vec); + + transpose_elems_inplace_u16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7); + + store_u16_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8; + d += 8; + width -= 8; + } while (width != 0); + src_ptr += 8 * src_stride; + dst_ptr += 8 * dst_stride; + height -= 8; + } +#endif // AOM_ARCH_AARCH64 + + while (height > 0) { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + int width = w; + + uint8x8_t t0 = vld1_u8(s); // a0 a1 a2 a3 a4 a5 a6 a7 + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + __builtin_prefetch(d); + + s = src_ptr + 8; + + do { + t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15 + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t0)); + + int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8 + int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9 + int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10 + int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11 + int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12 + int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13 + int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14 + + uint16x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter, + round_offset_vec); + + vst1q_u16(d, d0); + + s0 = s8; + s += 8; + d += 8; + width -= 8; + } while (width != 0); + src_ptr += src_stride; + dst_ptr += dst_stride; + height--; + } + } +} + +void av1_dist_wtd_convolve_x_neon(const uint8_t *src, int src_stride, + uint8_t *dst8, int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_x, + const int subpel_x_qn, + ConvolveParams *conv_params) { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_x_dist_wtd_avg_neon(src, src_stride, dst8, dst8_stride, + w, h, filter_params_x, subpel_x_qn, + conv_params); + } else { + dist_wtd_convolve_x_avg_neon(src, src_stride, dst8, dst8_stride, w, h, + filter_params_x, subpel_x_qn, conv_params); + } + } else { + dist_wtd_convolve_x_neon(src, src_stride, w, h, filter_params_x, + subpel_x_qn, conv_params); + } +} + +static INLINE uint16x4_t convolve6_4_y(const int16x4_t s0, const int16x4_t s1, + const int16x4_t s2, const int16x4_t s3, + const int16x4_t s4, const int16x4_t s5, + const int16x8_t y_filter, + const int16x4_t round_offset) { + const int16x4_t y_filter_0_3 = vget_low_s16(y_filter); + const int16x4_t y_filter_4_7 = vget_high_s16(y_filter); + + // Filter values at indices 0 and 7 are 0. + int16x4_t sum = vmul_lane_s16(s0, y_filter_0_3, 1); + sum = vmla_lane_s16(sum, s1, y_filter_0_3, 2); + sum = vmla_lane_s16(sum, s2, y_filter_0_3, 3); + sum = vmla_lane_s16(sum, s3, y_filter_4_7, 0); + sum = vmla_lane_s16(sum, s4, y_filter_4_7, 1); + sum = vmla_lane_s16(sum, s5, y_filter_4_7, 2); + + // We halved the convolution filter values so -1 from the right shift. + int16x4_t res = vrsra_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpret_u16_s16(res); +} + +static INLINE uint16x8_t convolve6_8_y(const int16x8_t s0, const int16x8_t s1, + const int16x8_t s2, const int16x8_t s3, + const int16x8_t s4, const int16x8_t s5, + const int16x8_t y_filter, + const int16x8_t round_offset) { + const int16x4_t y_filter_0_3 = vget_low_s16(y_filter); + const int16x4_t y_filter_4_7 = vget_high_s16(y_filter); + + // Filter values at indices 0 and 7 are 0. + int16x8_t sum = vmulq_lane_s16(s0, y_filter_0_3, 1); + sum = vmlaq_lane_s16(sum, s1, y_filter_0_3, 2); + sum = vmlaq_lane_s16(sum, s2, y_filter_0_3, 3); + sum = vmlaq_lane_s16(sum, s3, y_filter_4_7, 0); + sum = vmlaq_lane_s16(sum, s4, y_filter_4_7, 1); + sum = vmlaq_lane_s16(sum, s5, y_filter_4_7, 2); + + // We halved the convolution filter values so -1 from the right shift. + int16x8_t res = vrsraq_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpretq_u16_s16(res); +} + +static INLINE void dist_wtd_convolve_y_6tap_dist_wtd_avg_neon( + const uint8_t *src_ptr, int src_stride, uint8_t *dst8_ptr, + const int dst8_stride, int w, int h, const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + const uint16_t fwd_offset = conv_params->fwd_offset; + const uint16_t bck_offset = conv_params->bck_offset; + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + + s += 5 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve6_4_y(s1, s2, s3, s4, s5, s6, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve6_4_y(s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve6_4_y(s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_dist_wtd_avg_4x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, round_offset_vec, &d01, &d23); + + store_u8x4_strided_x2(d_u8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(d_u8 + 2 * dst8_stride, dst8_stride, d23); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s += 4 * src_stride; + d += 4 * dst_stride; + d_u8 += 4 * dst8_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0 = vld1_u16(d); + + uint8x8_t d01; + compute_dist_wtd_avg_4x1(dd0, d0, fwd_offset, bck_offset, + vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(d_u8, d01); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s += src_stride; + d += dst_stride; + d_u8 += dst8_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + dst8_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr + (5 * src_stride); + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + uint8x8_t t0, t1, t2, t3, t4; + load_u8_8x5(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + uint16x8_t d1 = + convolve6_8_y(s1, s2, s3, s4, s5, s6, y_filter, round_offset_vec); + uint16x8_t d2 = + convolve6_8_y(s2, s3, s4, s5, s6, s7, y_filter, round_offset_vec); + uint16x8_t d3 = + convolve6_8_y(s3, s4, s5, s6, s7, s8, y_filter, round_offset_vec); + uint16x8_t d4 = + convolve6_8_y(s4, s5, s6, s7, s8, s9, y_filter, round_offset_vec); + uint16x8_t d5 = + convolve6_8_y(s5, s6, s7, s8, s9, s10, y_filter, round_offset_vec); + uint16x8_t d6 = + convolve6_8_y(s6, s7, s8, s9, s10, s11, y_filter, round_offset_vec); + uint16x8_t d7 = convolve6_8_y(s7, s8, s9, s10, s11, s12, y_filter, + round_offset_vec); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_dist_wtd_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, round_offset_vec, &d0_u8, &d1_u8, + &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + d_u8 += 4 * dst8_stride; + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_dist_wtd_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, fwd_offset, + bck_offset, round_offset_vec, &d4_u8, &d5_u8, + &d6_u8, &d7_u8); + + store_u8_8x4(d_u8, dst8_stride, d4_u8, d5_u8, d6_u8, d7_u8); + d_u8 += 4 * dst8_stride; + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_dist_wtd_avg_8x1(dd0, d0, fwd_offset, bck_offset, + round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + d_u8 += dst8_stride; + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + dst8_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +static INLINE void dist_wtd_convolve_y_6tap_avg_neon( + const uint8_t *src_ptr, int src_stride, uint8_t *dst8_ptr, + const int dst8_stride, int w, int h, const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + + s += 5 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve6_4_y(s1, s2, s3, s4, s5, s6, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve6_4_y(s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve6_4_y(s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_basic_avg_4x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + round_offset_vec, &d01, &d23); + + store_u8x4_strided_x2(d_u8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(d_u8 + 2 * dst8_stride, dst8_stride, d23); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s += 4 * src_stride; + d += 4 * dst_stride; + d_u8 += 4 * dst8_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + + uint16x4_t dd0 = vld1_u16(d); + + uint8x8_t d01; + compute_basic_avg_4x1(dd0, d0, vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(d_u8, d01); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s += src_stride; + d += dst_stride; + d_u8 += dst8_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + dst8_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr + (5 * src_stride); + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + uint8x8_t t0, t1, t2, t3, t4; + load_u8_8x5(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + uint16x8_t d1 = + convolve6_8_y(s1, s2, s3, s4, s5, s6, y_filter, round_offset_vec); + uint16x8_t d2 = + convolve6_8_y(s2, s3, s4, s5, s6, s7, y_filter, round_offset_vec); + uint16x8_t d3 = + convolve6_8_y(s3, s4, s5, s6, s7, s8, y_filter, round_offset_vec); + uint16x8_t d4 = + convolve6_8_y(s4, s5, s6, s7, s8, s9, y_filter, round_offset_vec); + uint16x8_t d5 = + convolve6_8_y(s5, s6, s7, s8, s9, s10, y_filter, round_offset_vec); + uint16x8_t d6 = + convolve6_8_y(s6, s7, s8, s9, s10, s11, y_filter, round_offset_vec); + uint16x8_t d7 = convolve6_8_y(s7, s8, s9, s10, s11, s12, y_filter, + round_offset_vec); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_basic_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + round_offset_vec, &d0_u8, &d1_u8, &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + d_u8 += 4 * dst8_stride; + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_basic_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, + round_offset_vec, &d4_u8, &d5_u8, &d6_u8, &d7_u8); + + store_u8_8x4(d_u8, dst8_stride, d4_u8, d5_u8, d6_u8, d7_u8); + d_u8 += 4 * dst8_stride; + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_basic_avg_8x1(dd0, d0, round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + d_u8 += dst8_stride; + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + dst8_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +static INLINE void dist_wtd_convolve_y_6tap_neon(const uint8_t *src_ptr, + int src_stride, int w, int h, + const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + int height = h; + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + + s += 5 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve6_4_y(s1, s2, s3, s4, s5, s6, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve6_4_y(s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve6_4_y(s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + + store_u16_4x4(d, dst_stride, d0, d1, d2, d3); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s += 4 * src_stride; + d += 4 * dst_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter, + vget_low_s16(round_offset_vec)); + + vst1_u16(d, d0); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr + (5 * src_stride); + CONV_BUF_TYPE *d = dst_ptr; + int height = h; + + uint8x8_t t0, t1, t2, t3, t4; + load_u8_8x5(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t5, t6, t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + uint16x8_t d1 = + convolve6_8_y(s1, s2, s3, s4, s5, s6, y_filter, round_offset_vec); + uint16x8_t d2 = + convolve6_8_y(s2, s3, s4, s5, s6, s7, y_filter, round_offset_vec); + uint16x8_t d3 = + convolve6_8_y(s3, s4, s5, s6, s7, s8, y_filter, round_offset_vec); + uint16x8_t d4 = + convolve6_8_y(s4, s5, s6, s7, s8, s9, y_filter, round_offset_vec); + uint16x8_t d5 = + convolve6_8_y(s5, s6, s7, s8, s9, s10, y_filter, round_offset_vec); + uint16x8_t d6 = + convolve6_8_y(s6, s7, s8, s9, s10, s11, y_filter, round_offset_vec); + uint16x8_t d7 = convolve6_8_y(s7, s8, s9, s10, s11, s12, y_filter, + round_offset_vec); + + store_u16_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + uint16x8_t d0 = + convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter, round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + + vst1q_u16(d, d0); + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +static INLINE uint16x4_t convolve8_4_y(const int16x4_t s0, const int16x4_t s1, + const int16x4_t s2, const int16x4_t s3, + const int16x4_t s4, const int16x4_t s5, + const int16x4_t s6, const int16x4_t s7, + const int16x8_t y_filter, + const int16x4_t round_offset) { + const int16x4_t y_filter_0_3 = vget_low_s16(y_filter); + const int16x4_t y_filter_4_7 = vget_high_s16(y_filter); + + int16x4_t sum = vmul_lane_s16(s0, y_filter_0_3, 0); + sum = vmla_lane_s16(sum, s1, y_filter_0_3, 1); + sum = vmla_lane_s16(sum, s2, y_filter_0_3, 2); + sum = vmla_lane_s16(sum, s3, y_filter_0_3, 3); + sum = vmla_lane_s16(sum, s4, y_filter_4_7, 0); + sum = vmla_lane_s16(sum, s5, y_filter_4_7, 1); + sum = vmla_lane_s16(sum, s6, y_filter_4_7, 2); + sum = vmla_lane_s16(sum, s7, y_filter_4_7, 3); + + // We halved the convolution filter values so -1 from the right shift. + int16x4_t res = vrsra_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpret_u16_s16(res); +} + +static INLINE uint16x8_t convolve8_8_y(const int16x8_t s0, const int16x8_t s1, + const int16x8_t s2, const int16x8_t s3, + const int16x8_t s4, const int16x8_t s5, + const int16x8_t s6, const int16x8_t s7, + const int16x8_t y_filter, + const int16x8_t round_offset) { + const int16x4_t y_filter_0_3 = vget_low_s16(y_filter); + const int16x4_t y_filter_4_7 = vget_high_s16(y_filter); + + int16x8_t sum = vmulq_lane_s16(s0, y_filter_0_3, 0); + sum = vmlaq_lane_s16(sum, s1, y_filter_0_3, 1); + sum = vmlaq_lane_s16(sum, s2, y_filter_0_3, 2); + sum = vmlaq_lane_s16(sum, s3, y_filter_0_3, 3); + sum = vmlaq_lane_s16(sum, s4, y_filter_4_7, 0); + sum = vmlaq_lane_s16(sum, s5, y_filter_4_7, 1); + sum = vmlaq_lane_s16(sum, s6, y_filter_4_7, 2); + sum = vmlaq_lane_s16(sum, s7, y_filter_4_7, 3); + + // We halved the convolution filter values so -1 from the right shift. + int16x8_t res = vrsraq_n_s16(round_offset, sum, ROUND0_BITS - 1); + return vreinterpretq_u16_s16(res); +} + +static INLINE void dist_wtd_convolve_y_8tap_dist_wtd_avg_neon( + const uint8_t *src_ptr, int src_stride, uint8_t *dst8_ptr, + const int dst8_stride, int w, int h, const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + const uint16_t fwd_offset = conv_params->fwd_offset; + const uint16_t bck_offset = conv_params->bck_offset; + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + uint8x8_t t5 = load_unaligned_u8_4x1(s + 5 * src_stride); + uint8x8_t t6 = load_unaligned_u8_4x1(s + 6 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t5))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t6))); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve8_4_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve8_4_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve8_4_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + vget_low_s16(round_offset_vec)); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + + __builtin_prefetch(d_u8 + 0 * dst8_stride); + __builtin_prefetch(d_u8 + 1 * dst8_stride); + __builtin_prefetch(d_u8 + 2 * dst8_stride); + __builtin_prefetch(d_u8 + 3 * dst8_stride); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_dist_wtd_avg_4x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, round_offset_vec, &d01, &d23); + + store_u8x4_strided_x2(d_u8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(d_u8 + 2 * dst8_stride, dst8_stride, d23); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s5 = s9; + s6 = s10; + s += 4 * src_stride; + d += 4 * dst_stride; + d_u8 += 4 * dst8_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + + __builtin_prefetch(d); + + uint16x4_t dd0 = vld1_u16(d); + + uint8x8_t d01; + compute_dist_wtd_avg_4x1(dd0, d0, fwd_offset, bck_offset, + vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(d_u8, d01); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + s += src_stride; + d += dst_stride; + d_u8 += dst8_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + dst8_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + __builtin_prefetch(s + 4 * src_stride); + __builtin_prefetch(s + 5 * src_stride); + __builtin_prefetch(s + 6 * src_stride); + __builtin_prefetch(s + 7 * src_stride); + + uint8x8_t t0, t1, t2, t3, t4, t5, t6; + load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + __builtin_prefetch(dst_ptr + 0 * dst_stride); + __builtin_prefetch(dst_ptr + 1 * dst_stride); + __builtin_prefetch(dst_ptr + 2 * dst_stride); + __builtin_prefetch(dst_ptr + 3 * dst_stride); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_y(s4, s5, s6, s7, s8, s9, s10, s11, + y_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_y(s5, s6, s7, s8, s9, s10, s11, s12, + y_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_y(s6, s7, s8, s9, s10, s11, s12, s13, + y_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_y(s7, s8, s9, s10, s11, s12, s13, s14, + y_filter, round_offset_vec); + + __builtin_prefetch(d + 0 * dst8_stride); + __builtin_prefetch(d + 1 * dst8_stride); + __builtin_prefetch(d + 2 * dst8_stride); + __builtin_prefetch(d + 3 * dst8_stride); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_dist_wtd_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, fwd_offset, + bck_offset, round_offset_vec, &d0_u8, &d1_u8, + &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + d_u8 += 4 * dst8_stride; + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_dist_wtd_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, fwd_offset, + bck_offset, round_offset_vec, &d4_u8, &d5_u8, + &d6_u8, &d7_u8); + + store_u8_8x4(d_u8, dst8_stride, d4_u8, d5_u8, d6_u8, d7_u8); + d_u8 += 4 * dst8_stride; + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + __builtin_prefetch(dst_ptr); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + + __builtin_prefetch(d); + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_dist_wtd_avg_8x1(dd0, d0, fwd_offset, bck_offset, + round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + d_u8 += dst8_stride; + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + dst8_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +static INLINE void dist_wtd_convolve_y_8tap_avg_neon( + const uint8_t *src_ptr, int src_stride, uint8_t *dst8_ptr, + const int dst8_stride, int w, int h, const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + uint8x8_t t5 = load_unaligned_u8_4x1(s + 5 * src_stride); + uint8x8_t t6 = load_unaligned_u8_4x1(s + 6 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t5))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t6))); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve8_4_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve8_4_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve8_4_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + vget_low_s16(round_offset_vec)); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + + __builtin_prefetch(d_u8 + 0 * dst8_stride); + __builtin_prefetch(d_u8 + 1 * dst8_stride); + __builtin_prefetch(d_u8 + 2 * dst8_stride); + __builtin_prefetch(d_u8 + 3 * dst8_stride); + + uint16x4_t dd0, dd1, dd2, dd3; + load_u16_4x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d01, d23; + compute_basic_avg_4x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + round_offset_vec, &d01, &d23); + + store_u8x4_strided_x2(d_u8 + 0 * dst8_stride, dst8_stride, d01); + store_u8x4_strided_x2(d_u8 + 2 * dst8_stride, dst8_stride, d23); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s5 = s9; + s6 = s10; + s += 4 * src_stride; + d += 4 * dst_stride; + d_u8 += 4 * dst8_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + + __builtin_prefetch(d); + + uint16x4_t dd0 = vld1_u16(d); + + uint8x8_t d01; + compute_basic_avg_4x1(dd0, d0, vget_low_s16(round_offset_vec), &d01); + + store_u8_4x1(d_u8, d01); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + s += src_stride; + d += dst_stride; + d_u8 += dst8_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + dst8_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + uint8_t *d_u8 = dst8_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + __builtin_prefetch(s + 4 * src_stride); + __builtin_prefetch(s + 5 * src_stride); + __builtin_prefetch(s + 6 * src_stride); + __builtin_prefetch(s + 7 * src_stride); + + uint8x8_t t0, t1, t2, t3, t4, t5, t6; + load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + __builtin_prefetch(dst_ptr + 0 * dst_stride); + __builtin_prefetch(dst_ptr + 1 * dst_stride); + __builtin_prefetch(dst_ptr + 2 * dst_stride); + __builtin_prefetch(dst_ptr + 3 * dst_stride); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_y(s4, s5, s6, s7, s8, s9, s10, s11, + y_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_y(s5, s6, s7, s8, s9, s10, s11, s12, + y_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_y(s6, s7, s8, s9, s10, s11, s12, s13, + y_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_y(s7, s8, s9, s10, s11, s12, s13, s14, + y_filter, round_offset_vec); + + __builtin_prefetch(d + 0 * dst8_stride); + __builtin_prefetch(d + 1 * dst8_stride); + __builtin_prefetch(d + 2 * dst8_stride); + __builtin_prefetch(d + 3 * dst8_stride); + + uint16x8_t dd0, dd1, dd2, dd3; + load_u16_8x4(d, dst_stride, &dd0, &dd1, &dd2, &dd3); + + uint8x8_t d0_u8, d1_u8, d2_u8, d3_u8; + compute_basic_avg_8x4(dd0, dd1, dd2, dd3, d0, d1, d2, d3, + round_offset_vec, &d0_u8, &d1_u8, &d2_u8, &d3_u8); + + store_u8_8x4(d_u8, dst8_stride, d0_u8, d1_u8, d2_u8, d3_u8); + d_u8 += 4 * dst8_stride; + + uint16x8_t dd4, dd5, dd6, dd7; + load_u16_8x4(d + 4 * dst_stride, dst_stride, &dd4, &dd5, &dd6, &dd7); + + uint8x8_t d4_u8, d5_u8, d6_u8, d7_u8; + compute_basic_avg_8x4(dd4, dd5, dd6, dd7, d4, d5, d6, d7, + round_offset_vec, &d4_u8, &d5_u8, &d6_u8, &d7_u8); + + store_u8_8x4(d_u8, dst8_stride, d4_u8, d5_u8, d6_u8, d7_u8); + d_u8 += 4 * dst8_stride; + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + __builtin_prefetch(dst_ptr); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + + __builtin_prefetch(d); + + uint16x8_t dd0 = vld1q_u16(d); + + uint8x8_t d0_u8; + compute_basic_avg_8x1(dd0, d0, round_offset_vec, &d0_u8); + + vst1_u8(d_u8, d0_u8); + d_u8 += dst8_stride; + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + dst8_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +static INLINE void dist_wtd_convolve_y_8tap_neon(const uint8_t *src_ptr, + int src_stride, int w, int h, + const int16x8_t y_filter, + ConvolveParams *conv_params) { + const int bd = 8; + const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS; + const int16_t round_offset = (1 << (offset_bits - COMPOUND_ROUND1_BITS)) + + (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1)); + const int16x8_t round_offset_vec = vdupq_n_s16(round_offset); + + CONV_BUF_TYPE *dst_ptr = conv_params->dst; + const int dst_stride = conv_params->dst_stride; + int width = w; + + if (w == 4 || h == 4) { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + + uint8x8_t t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + uint8x8_t t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + uint8x8_t t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + uint8x8_t t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + uint8x8_t t4 = load_unaligned_u8_4x1(s + 4 * src_stride); + uint8x8_t t5 = load_unaligned_u8_4x1(s + 5 * src_stride); + uint8x8_t t6 = load_unaligned_u8_4x1(s + 6 * src_stride); + + int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4))); + int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t5))); + int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t6))); + + __builtin_prefetch(d + 0 * dst_stride); + __builtin_prefetch(d + 1 * dst_stride); + __builtin_prefetch(d + 2 * dst_stride); + __builtin_prefetch(d + 3 * dst_stride); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s + 0 * src_stride); + t1 = load_unaligned_u8_4x1(s + 1 * src_stride); + t2 = load_unaligned_u8_4x1(s + 2 * src_stride); + t3 = load_unaligned_u8_4x1(s + 3 * src_stride); + + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1))); + int16x4_t s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2))); + int16x4_t s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d1 = convolve8_4_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d2 = convolve8_4_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + vget_low_s16(round_offset_vec)); + uint16x4_t d3 = convolve8_4_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + vget_low_s16(round_offset_vec)); + + store_u16_4x4(d, dst_stride, d0, d1, d2, d3); + + s0 = s4; + s1 = s5; + s2 = s6; + s3 = s7; + s4 = s8; + s5 = s9; + s6 = s10; + s += 4 * src_stride; + d += 4 * dst_stride; + height -= 4; +#else // !AOM_ARCH_AARCH64 + t0 = load_unaligned_u8_4x1(s); + int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0))); + + uint16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + vget_low_s16(round_offset_vec)); + + vst1_u16(d, d0); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 4; + dst_ptr += 4; + width -= 4; + } while (width != 0); + } else { + do { + const uint8_t *s = src_ptr; + CONV_BUF_TYPE *d = dst_ptr; + int height = h; + + __builtin_prefetch(s + 0 * src_stride); + __builtin_prefetch(s + 1 * src_stride); + __builtin_prefetch(s + 2 * src_stride); + __builtin_prefetch(s + 3 * src_stride); + __builtin_prefetch(s + 4 * src_stride); + __builtin_prefetch(s + 5 * src_stride); + __builtin_prefetch(s + 6 * src_stride); + __builtin_prefetch(s + 7 * src_stride); + + uint8x8_t t0, t1, t2, t3, t4, t5, t6; + load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6); + + int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6)); + + s += 7 * src_stride; + + do { +#if AOM_ARCH_AARCH64 + uint8x8_t t7; + load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7); + + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0)); + int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1)); + int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2)); + int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3)); + int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4)); + int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5)); + int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6)); + int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7)); + + __builtin_prefetch(dst_ptr + 0 * dst_stride); + __builtin_prefetch(dst_ptr + 1 * dst_stride); + __builtin_prefetch(dst_ptr + 2 * dst_stride); + __builtin_prefetch(dst_ptr + 3 * dst_stride); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + uint16x8_t d1 = convolve8_8_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter, + round_offset_vec); + uint16x8_t d2 = convolve8_8_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter, + round_offset_vec); + uint16x8_t d3 = convolve8_8_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter, + round_offset_vec); + uint16x8_t d4 = convolve8_8_y(s4, s5, s6, s7, s8, s9, s10, s11, + y_filter, round_offset_vec); + uint16x8_t d5 = convolve8_8_y(s5, s6, s7, s8, s9, s10, s11, s12, + y_filter, round_offset_vec); + uint16x8_t d6 = convolve8_8_y(s6, s7, s8, s9, s10, s11, s12, s13, + y_filter, round_offset_vec); + uint16x8_t d7 = convolve8_8_y(s7, s8, s9, s10, s11, s12, s13, s14, + y_filter, round_offset_vec); + + store_u16_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7); + + s0 = s8; + s1 = s9; + s2 = s10; + s3 = s11; + s4 = s12; + s5 = s13; + s6 = s14; + s += 8 * src_stride; + d += 8 * dst_stride; + height -= 8; +#else // !AOM_ARCH_AARCH64 + int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s))); + + __builtin_prefetch(dst_ptr); + + uint16x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, + round_offset_vec); + + s0 = s1; + s1 = s2; + s2 = s3; + s3 = s4; + s4 = s5; + s5 = s6; + s6 = s7; + + vst1q_u16(d, d0); + + s += src_stride; + d += dst_stride; + height--; +#endif // AOM_ARCH_AARCH64 + } while (height != 0); + src_ptr += 8; + dst_ptr += 8; + width -= 8; + } while (width != 0); + } +} + +void av1_dist_wtd_convolve_y_neon(const uint8_t *src, int src_stride, + uint8_t *dst8, int dst8_stride, int w, int h, + const InterpFilterParams *filter_params_y, + const int subpel_y_qn, + ConvolveParams *conv_params) { + assert(w % 4 == 0); + assert(h % 4 == 0); + + // Vertical filter. + const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel( + filter_params_y, subpel_y_qn & SUBPEL_MASK); + // Filter values are even, so downshift by 1 to reduce intermediate + // precision requirements. + const int16x8_t y_filter = vshrq_n_s16(vld1q_s16(y_filter_ptr), 1); + + const int vert_offset = filter_params_y->taps / 2 - 1; + const uint8_t *src_ptr = src - (vert_offset * src_stride); + + if (get_filter_tap(filter_params_y, subpel_y_qn) <= 6) { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_y_6tap_dist_wtd_avg_neon( + src_ptr + src_stride, src_stride, dst8, dst8_stride, w, h, y_filter, + conv_params); + } else { + dist_wtd_convolve_y_6tap_avg_neon(src_ptr + src_stride, src_stride, + dst8, dst8_stride, w, h, y_filter, + conv_params); + } + } else { + dist_wtd_convolve_y_6tap_neon(src_ptr + src_stride, src_stride, w, h, + y_filter, conv_params); + } + } else { + if (conv_params->do_average) { + if (UNLIKELY(conv_params->use_dist_wtd_comp_avg)) { + dist_wtd_convolve_y_8tap_dist_wtd_avg_neon(src_ptr, src_stride, dst8, + dst8_stride, w, h, y_filter, + conv_params); + } else { + dist_wtd_convolve_y_8tap_avg_neon(src_ptr, src_stride, dst8, + dst8_stride, w, h, y_filter, + conv_params); + } + } else { + dist_wtd_convolve_y_8tap_neon(src_ptr, src_stride, w, h, y_filter, + conv_params); + } + } +} |