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highbd_convolve_neon.h (6464B)


      1 /*
      2 * Copyright (c) 2023, Alliance for Open Media. All rights reserved.
      3 *
      4 * This source code is subject to the terms of the BSD 2 Clause License and
      5 * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
      6 * was not distributed with this source code in the LICENSE file, you can
      7 * obtain it at www.aomedia.org/license/software. If the Alliance for Open
      8 * Media Patent License 1.0 was not distributed with this source code in the
      9 * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
     10 */
     11 
     12 #ifndef AOM_AV1_COMMON_ARM_HIGHBD_CONVOLVE_NEON_H_
     13 #define AOM_AV1_COMMON_ARM_HIGHBD_CONVOLVE_NEON_H_
     14 
     15 #include <arm_neon.h>
     16 
     17 #include "aom_dsp/arm/mem_neon.h"
     18 #include "aom_dsp/arm/transpose_neon.h"
     19 #include "av1/common/convolve.h"
     20 
     21 static inline int32x4_t highbd_convolve8_4_s32(
     22    const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
     23    const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
     24    const int16x4_t s6, const int16x4_t s7, const int16x8_t y_filter,
     25    const int32x4_t offset) {
     26  const int16x4_t y_filter_lo = vget_low_s16(y_filter);
     27  const int16x4_t y_filter_hi = vget_high_s16(y_filter);
     28 
     29  int32x4_t sum = vmlal_lane_s16(offset, s0, y_filter_lo, 0);
     30  sum = vmlal_lane_s16(sum, s1, y_filter_lo, 1);
     31  sum = vmlal_lane_s16(sum, s2, y_filter_lo, 2);
     32  sum = vmlal_lane_s16(sum, s3, y_filter_lo, 3);
     33  sum = vmlal_lane_s16(sum, s4, y_filter_hi, 0);
     34  sum = vmlal_lane_s16(sum, s5, y_filter_hi, 1);
     35  sum = vmlal_lane_s16(sum, s6, y_filter_hi, 2);
     36  sum = vmlal_lane_s16(sum, s7, y_filter_hi, 3);
     37 
     38  return sum;
     39 }
     40 
     41 static inline uint16x4_t highbd_convolve8_4_sr_s32_s16(
     42    const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
     43    const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
     44    const int16x4_t s6, const int16x4_t s7, const int16x8_t y_filter,
     45    const int32x4_t shift_s32, const int32x4_t offset) {
     46  int32x4_t sum =
     47      highbd_convolve8_4_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, offset);
     48 
     49  sum = vqrshlq_s32(sum, shift_s32);
     50  return vqmovun_s32(sum);
     51 }
     52 
     53 // Like above but also perform round shifting and subtract correction term
     54 static inline uint16x4_t highbd_convolve8_4_srsub_s32_s16(
     55    const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
     56    const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
     57    const int16x4_t s6, const int16x4_t s7, const int16x8_t y_filter,
     58    const int32x4_t round_shift, const int32x4_t offset,
     59    const int32x4_t correction) {
     60  int32x4_t sum =
     61      highbd_convolve8_4_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, offset);
     62 
     63  sum = vsubq_s32(vqrshlq_s32(sum, round_shift), correction);
     64  return vqmovun_s32(sum);
     65 }
     66 
     67 static inline void highbd_convolve8_8_s32(
     68    const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
     69    const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
     70    const int16x8_t s6, const int16x8_t s7, const int16x8_t y_filter,
     71    const int32x4_t offset, int32x4_t *sum0, int32x4_t *sum1) {
     72  const int16x4_t y_filter_lo = vget_low_s16(y_filter);
     73  const int16x4_t y_filter_hi = vget_high_s16(y_filter);
     74 
     75  *sum0 = vmlal_lane_s16(offset, vget_low_s16(s0), y_filter_lo, 0);
     76  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s1), y_filter_lo, 1);
     77  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s2), y_filter_lo, 2);
     78  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s3), y_filter_lo, 3);
     79  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s4), y_filter_hi, 0);
     80  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s5), y_filter_hi, 1);
     81  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s6), y_filter_hi, 2);
     82  *sum0 = vmlal_lane_s16(*sum0, vget_low_s16(s7), y_filter_hi, 3);
     83 
     84  *sum1 = vmlal_lane_s16(offset, vget_high_s16(s0), y_filter_lo, 0);
     85  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s1), y_filter_lo, 1);
     86  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s2), y_filter_lo, 2);
     87  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s3), y_filter_lo, 3);
     88  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s4), y_filter_hi, 0);
     89  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s5), y_filter_hi, 1);
     90  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s6), y_filter_hi, 2);
     91  *sum1 = vmlal_lane_s16(*sum1, vget_high_s16(s7), y_filter_hi, 3);
     92 }
     93 
     94 // Like above but also perform round shifting and subtract correction term
     95 static inline uint16x8_t highbd_convolve8_8_srsub_s32_s16(
     96    const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
     97    const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
     98    const int16x8_t s6, const int16x8_t s7, const int16x8_t y_filter,
     99    const int32x4_t round_shift, const int32x4_t offset,
    100    const int32x4_t correction) {
    101  int32x4_t sum0;
    102  int32x4_t sum1;
    103  highbd_convolve8_8_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter, offset,
    104                         &sum0, &sum1);
    105 
    106  sum0 = vsubq_s32(vqrshlq_s32(sum0, round_shift), correction);
    107  sum1 = vsubq_s32(vqrshlq_s32(sum1, round_shift), correction);
    108 
    109  return vcombine_u16(vqmovun_s32(sum0), vqmovun_s32(sum1));
    110 }
    111 
    112 static inline int32x4_t highbd_convolve8_2d_scale_horiz4x8_s32(
    113    const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
    114    const int16x8_t s3, const int16x4_t *filters_lo,
    115    const int16x4_t *filters_hi, const int32x4_t offset) {
    116  int16x4_t s_lo[] = { vget_low_s16(s0), vget_low_s16(s1), vget_low_s16(s2),
    117                       vget_low_s16(s3) };
    118  int16x4_t s_hi[] = { vget_high_s16(s0), vget_high_s16(s1), vget_high_s16(s2),
    119                       vget_high_s16(s3) };
    120 
    121  transpose_array_inplace_u16_4x4((uint16x4_t *)s_lo);
    122  transpose_array_inplace_u16_4x4((uint16x4_t *)s_hi);
    123 
    124  int32x4_t sum = vmlal_s16(offset, s_lo[0], filters_lo[0]);
    125  sum = vmlal_s16(sum, s_lo[1], filters_lo[1]);
    126  sum = vmlal_s16(sum, s_lo[2], filters_lo[2]);
    127  sum = vmlal_s16(sum, s_lo[3], filters_lo[3]);
    128  sum = vmlal_s16(sum, s_hi[0], filters_hi[0]);
    129  sum = vmlal_s16(sum, s_hi[1], filters_hi[1]);
    130  sum = vmlal_s16(sum, s_hi[2], filters_hi[2]);
    131  sum = vmlal_s16(sum, s_hi[3], filters_hi[3]);
    132 
    133  return sum;
    134 }
    135 
    136 static inline uint16x4_t highbd_convolve8_2d_scale_horiz4x8_s32_s16(
    137    const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
    138    const int16x8_t s3, const int16x4_t *filters_lo,
    139    const int16x4_t *filters_hi, const int32x4_t shift_s32,
    140    const int32x4_t offset) {
    141  int32x4_t sum = highbd_convolve8_2d_scale_horiz4x8_s32(
    142      s0, s1, s2, s3, filters_lo, filters_hi, offset);
    143 
    144  sum = vqrshlq_s32(sum, shift_s32);
    145  return vqmovun_s32(sum);
    146 }
    147 
    148 #endif  // AOM_AV1_COMMON_ARM_HIGHBD_CONVOLVE_NEON_H_