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/*
* Copyright (c) 2026, 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 <riscv_vector.h>
#include <assert.h>
#include "config/aom_config.h"
#include "config/av1_rtcd.h"
#include "av1/common/convolve.h"
#include "av1/common/filter.h"
#include "av1/common/riscv/highbd_compound_convolve_rvv.h"
static inline vuint16mf2_t highbd_convolve6_4_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const vint16mf2_t s4, const vint16mf2_t s5,
const int16_t *filter, const vint32m1_t offset_vec,
const int32_t round_bits, const size_t vl) {
// Values at indices 0 and 7 of filter are zero.
vint32m1_t sum = __riscv_vwmacc_vx_i32m1(offset_vec, filter[1], s0, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[2], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[3], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[4], s3, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[5], s4, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[6], s5, vl);
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16mf2_t res =
__riscv_vnclipu_wx_u16mf2(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16mf2_t res = __riscv_vnsrl_wx_u16mf2(sum_u32, round_bits, vl);
#endif
return res;
}
static inline vuint16m1_t highbd_convolve6_8_rvv(
const vint16m1_t s0, const vint16m1_t s1, const vint16m1_t s2,
const vint16m1_t s3, const vint16m1_t s4, const vint16m1_t s5,
const int16_t *filter, const vint32m2_t offset_vec,
const int32_t round_bits, const size_t vl) {
// Values at indices 0 and 7 of filter are zero.
vint32m2_t sum = __riscv_vwmacc_vx_i32m2(offset_vec, filter[1], s0, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[2], s1, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[3], s2, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[4], s3, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[5], s4, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[6], s5, vl);
vuint32m2_t sum_u32 =
__riscv_vreinterpret_v_i32m2_u32m2(__riscv_vmax_vx_i32m2(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16m1_t res =
__riscv_vnclipu_wx_u16m1(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16m1_t res = __riscv_vnsrl_wx_u16m1(sum_u32, round_bits, vl);
#endif
return res;
}
static inline void highbd_dist_wtd_convolve_x_6tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *x_filter_ptr, const int offset,
const int round_bits) {
int height = h;
const size_t vl = __riscv_vsetvl_e16m1(w);
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
int width = w;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
do {
vint16m1_t s00, s01, s02, s03, s04, s05;
vint16m1_t s10, s11, s12, s13, s14, s15;
vint16m1_t s20, s21, s22, s23, s24, s25;
vint16m1_t s30, s31, s32, s33, s34, s35;
// Load 6 consecutive 8-element vectors from 4 rows
load_s16_8x6(s + 0 * src_stride, 1, &s00, &s01, &s02, &s03, &s04, &s05,
vl);
load_s16_8x6(s + 1 * src_stride, 1, &s10, &s11, &s12, &s13, &s14, &s15,
vl);
load_s16_8x6(s + 2 * src_stride, 1, &s20, &s21, &s22, &s23, &s24, &s25,
vl);
load_s16_8x6(s + 3 * src_stride, 1, &s30, &s31, &s32, &s33, &s34, &s35,
vl);
// Convolve each row
vuint16m1_t d0 =
highbd_convolve6_8_rvv(s00, s01, s02, s03, s04, s05, x_filter_ptr,
offset_vec, round_bits, vl);
vuint16m1_t d1 =
highbd_convolve6_8_rvv(s10, s11, s12, s13, s14, s15, x_filter_ptr,
offset_vec, round_bits, vl);
vuint16m1_t d2 =
highbd_convolve6_8_rvv(s20, s21, s22, s23, s24, s25, x_filter_ptr,
offset_vec, round_bits, vl);
vuint16m1_t d3 =
highbd_convolve6_8_rvv(s30, s31, s32, s33, s34, s35, x_filter_ptr,
offset_vec, round_bits, vl);
// Store results with stride
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s += vl;
d += vl;
width -= vl;
} while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
} while (height != 0);
}
static inline vuint16mf2_t highbd_convolve8_4_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const vint16mf2_t s4, const vint16mf2_t s5,
const vint16mf2_t s6, const vint16mf2_t s7, const int16_t *filter,
const vint32m1_t offset_vec, const int32_t round_bits, const size_t vl) {
vint32m1_t sum = __riscv_vwmacc_vx_i32m1(offset_vec, filter[0], s0, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[3], s3, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[4], s4, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[5], s5, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[6], s6, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[7], s7, vl);
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16mf2_t res =
__riscv_vnclipu_wx_u16mf2(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16mf2_t res = __riscv_vnsrl_wx_u16mf2(sum_u32, round_bits, vl);
#endif
return res;
}
static inline vuint16m1_t highbd_convolve8_8_rvv(
const vint16m1_t s0, const vint16m1_t s1, const vint16m1_t s2,
const vint16m1_t s3, const vint16m1_t s4, const vint16m1_t s5,
const vint16m1_t s6, const vint16m1_t s7, const int16_t *filter,
const vint32m2_t offset_vec, const int32_t round_bits, const size_t vl) {
vint32m2_t sum = __riscv_vwmacc_vx_i32m2(offset_vec, filter[0], s0, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[3], s3, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[4], s4, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[5], s5, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[6], s6, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[7], s7, vl);
vuint32m2_t sum_u32 =
__riscv_vreinterpret_v_i32m2_u32m2(__riscv_vmax_vx_i32m2(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16m1_t res =
__riscv_vnclipu_wx_u16m1(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16m1_t res = __riscv_vnsrl_wx_u16m1(sum_u32, round_bits, vl);
#endif
return res;
}
static inline vuint16mf2_t highbd_convolve4_4_x_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const int16_t *filter, const vint32m1_t offset_vec,
const int round_bits, const size_t vl) {
vint32m1_t sum = __riscv_vwmacc_vx_i32m1(offset_vec, filter[0], s0, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[3], s3, vl);
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16mf2_t res =
__riscv_vnclipu_wx_u16mf2(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16mf2_t res = __riscv_vnsrl_wx_u16mf2(sum_u32, round_bits, vl);
#endif
return res;
}
static inline void highbd_dist_wtd_convolve_x_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *x_filter_ptr, const int offset,
const int round_bits) {
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
// 4-tap filters are used for blocks having width == 4.
const int16_t *filter = x_filter_ptr + 2; // Skip first 2 taps
const int16_t *s = (const int16_t *)(src_ptr + 2);
uint16_t *d = dst_ptr;
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
do {
// Load 4 taps for 4 rows
vint16mf2_t s00, s01, s02, s03;
vint16mf2_t s10, s11, s12, s13;
vint16mf2_t s20, s21, s22, s23;
vint16mf2_t s30, s31, s32, s33;
load_s16_4x4(s + 0 * src_stride, 1, &s00, &s01, &s02, &s03, vl);
load_s16_4x4(s + 1 * src_stride, 1, &s10, &s11, &s12, &s13, vl);
load_s16_4x4(s + 2 * src_stride, 1, &s20, &s21, &s22, &s23, vl);
load_s16_4x4(s + 3 * src_stride, 1, &s30, &s31, &s32, &s33, vl);
// Convolve each row
vuint16mf2_t d0 = highbd_convolve4_4_x_rvv(s00, s01, s02, s03, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d1 = highbd_convolve4_4_x_rvv(s10, s11, s12, s13, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d2 = highbd_convolve4_4_x_rvv(s20, s21, s22, s23, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d3 = highbd_convolve4_4_x_rvv(s30, s31, s32, s33, filter,
offset_vec, round_bits, vl);
// Store results
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
// 8-tap filter path
const int16_t *filter = x_filter_ptr;
int height = h;
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
int width = w;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
do {
vint16m1_t s00, s01, s02, s03, s04, s05, s06, s07;
vint16m1_t s10, s11, s12, s13, s14, s15, s16, s17;
vint16m1_t s20, s21, s22, s23, s24, s25, s26, s27;
vint16m1_t s30, s31, s32, s33, s34, s35, s36, s37;
// Load elements for each of 4 rows
load_s16_8x8(s + 0 * src_stride, 1, &s00, &s01, &s02, &s03, &s04, &s05,
&s06, &s07, vl);
load_s16_8x8(s + 1 * src_stride, 1, &s10, &s11, &s12, &s13, &s14, &s15,
&s16, &s17, vl);
load_s16_8x8(s + 2 * src_stride, 1, &s20, &s21, &s22, &s23, &s24, &s25,
&s26, &s27, vl);
load_s16_8x8(s + 3 * src_stride, 1, &s30, &s31, &s32, &s33, &s34, &s35,
&s36, &s37, vl);
// Convolve each row
vuint16m1_t d0 =
highbd_convolve8_8_rvv(s00, s01, s02, s03, s04, s05, s06, s07,
filter, offset_vec, round_bits, vl);
vuint16m1_t d1 =
highbd_convolve8_8_rvv(s10, s11, s12, s13, s14, s15, s16, s17,
filter, offset_vec, round_bits, vl);
vuint16m1_t d2 =
highbd_convolve8_8_rvv(s20, s21, s22, s23, s24, s25, s26, s27,
filter, offset_vec, round_bits, vl);
vuint16m1_t d3 =
highbd_convolve8_8_rvv(s30, s31, s32, s33, s34, s35, s36, s37,
filter, offset_vec, round_bits, vl);
// Store results
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s += vl;
d += vl;
width -= vl;
} while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
} while (height != 0);
}
}
void av1_highbd_dist_wtd_convolve_x_rvv(
const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w,
int h, const InterpFilterParams *filter_params_x, const int subpel_x_qn,
ConvolveParams *conv_params, int bd) {
DECLARE_ALIGNED(16, uint16_t,
im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]);
CONV_BUF_TYPE *dst16 = conv_params->dst;
const int x_filter_taps = get_filter_tap(filter_params_x, subpel_x_qn);
int dst16_stride = conv_params->dst_stride;
const int im_stride = MAX_SB_SIZE;
const int horiz_offset = filter_params_x->taps / 2 - 1;
assert(FILTER_BITS == COMPOUND_ROUND1_BITS);
const int offset_convolve = (1 << (conv_params->round_0 - 1)) +
(1 << (bd + FILTER_BITS)) +
(1 << (bd + FILTER_BITS - 1));
const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_x, subpel_x_qn & SUBPEL_MASK);
src -= horiz_offset;
int round_bits, shift_bits, offset_bits;
// horizontal filter
if (bd == 12) {
round_bits = ROUND0_BITS + 2;
shift_bits = ROUND_SHIFT - 2;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS - 2;
} else {
round_bits = ROUND0_BITS;
shift_bits = ROUND_SHIFT;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS;
}
if (conv_params->do_average) {
if (x_filter_taps <= 6 && w != 4) {
highbd_dist_wtd_convolve_x_6tap_rvv(src + 1, src_stride, im_block,
im_stride, w, h, x_filter_ptr,
offset_convolve, round_bits);
} else {
highbd_dist_wtd_convolve_x_rvv(src, src_stride, im_block, im_stride, w, h,
x_filter_ptr, offset_convolve, round_bits);
}
if (conv_params->use_dist_wtd_comp_avg) {
highbd_dist_wtd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
} else {
highbd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
}
} else {
if (x_filter_taps <= 6 && w != 4) {
highbd_dist_wtd_convolve_x_6tap_rvv(src + 1, src_stride, dst16,
dst16_stride, w, h, x_filter_ptr,
offset_convolve, round_bits);
} else {
highbd_dist_wtd_convolve_x_rvv(src, src_stride, dst16, dst16_stride, w, h,
x_filter_ptr, offset_convolve, round_bits);
}
}
}
static inline void highbd_dist_wtd_convolve_y_6tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *y_filter_ptr, const int offset,
const int round_bits) {
const int16_t *filter = y_filter_ptr;
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
// Load initial 5 rows for 6-tap filter
vint16mf2_t s0, s1, s2, s3, s4;
load_s16_4x5(s, src_stride, &s0, &s1, &s2, &s3, &s4, vl);
s += 5 * src_stride;
do {
// Load next 4 rows
vint16mf2_t s5, s6, s7, s8;
load_s16_4x4(s, src_stride, &s5, &s6, &s7, &s8, vl);
// Convolve 4 output rows
vuint16mf2_t d0 = highbd_convolve6_4_rvv(s0, s1, s2, s3, s4, s5, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d1 = highbd_convolve6_4_rvv(s1, s2, s3, s4, s5, s6, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d2 = highbd_convolve6_4_rvv(s2, s3, s4, s5, s6, s7, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d3 = highbd_convolve6_4_rvv(s3, s4, s5, s6, s7, s8, filter,
offset_vec, round_bits, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window: s0-s4 become s4-s8 for next iteration
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
int height = h;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 5 rows for 6-tap filter
vint16m1_t s0, s1, s2, s3, s4;
load_s16_8x5(s, src_stride, &s0, &s1, &s2, &s3, &s4, vl);
s += 5 * src_stride;
do {
// Load next 4 rows
vint16m1_t s5, s6, s7, s8;
load_s16_8x4(s, src_stride, &s5, &s6, &s7, &s8, vl);
// Convolve 4 output rows
vuint16m1_t d0 = highbd_convolve6_8_rvv(s0, s1, s2, s3, s4, s5, filter,
offset_vec, round_bits, vl);
vuint16m1_t d1 = highbd_convolve6_8_rvv(s1, s2, s3, s4, s5, s6, filter,
offset_vec, round_bits, vl);
vuint16m1_t d2 = highbd_convolve6_8_rvv(s2, s3, s4, s5, s6, s7, filter,
offset_vec, round_bits, vl);
vuint16m1_t d3 = highbd_convolve6_8_rvv(s3, s4, s5, s6, s7, s8, filter,
offset_vec, round_bits, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window: s0-s4 become s4-s8 for next iteration
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += vl;
dst_ptr += vl;
w -= vl;
} while (w > 0);
}
}
static inline vuint16mf2_t highbd_convolve4_4_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const int16_t *filter, const int32_t offset,
const int32_t round_bits, size_t vl) {
vint32m1_t sum = __riscv_vwmul_vx_i32m1(s0, filter[0], vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, filter[3], s3, vl);
sum = __riscv_vadd_vx_i32m1(sum, offset, vl);
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16mf2_t res =
__riscv_vnclipu_wx_u16mf2(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16mf2_t res = __riscv_vnsrl_wx_u16mf2(sum_u32, round_bits, vl);
#endif
return res;
}
static inline vuint16m1_t highbd_convolve4_8_rvv(
const vint16m1_t s0, const vint16m1_t s1, const vint16m1_t s2,
const vint16m1_t s3, const int16_t *filter, const int32_t offset,
const int32_t round_bits, size_t vl) {
vint32m2_t sum = __riscv_vwmul_vx_i32m2(s0, filter[0], vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, filter[3], s3, vl);
sum = __riscv_vadd_vx_i32m2(sum, offset, vl);
vuint32m2_t sum_u32 =
__riscv_vreinterpret_v_i32m2_u32m2(__riscv_vmax_vx_i32m2(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
vuint16m1_t res =
__riscv_vnclipu_wx_u16m1(sum_u32, round_bits, __RISCV_VXRM_RDN, vl);
#else
vuint16m1_t res = __riscv_vnsrl_wx_u16m1(sum_u32, round_bits, vl);
#endif
return res;
}
static inline void highbd_dist_wtd_convolve_y_4tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *y_filter_ptr, const int offset,
const int round_bits) {
const int16_t *filter = y_filter_ptr + 2;
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 3 rows
vint16mf2_t s0, s1, s2;
load_s16_4x3(s, src_stride, &s0, &s1, &s2, vl);
s += 3 * src_stride;
do {
// Load next 4 rows
vint16mf2_t s3, s4, s5, s6;
load_s16_4x4(s, src_stride, &s3, &s4, &s5, &s6, vl);
// Convolve 4 output rows
vuint16mf2_t d0 = highbd_convolve4_4_rvv(s0, s1, s2, s3, filter, offset,
round_bits, vl);
vuint16mf2_t d1 = highbd_convolve4_4_rvv(s1, s2, s3, s4, filter, offset,
round_bits, vl);
vuint16mf2_t d2 = highbd_convolve4_4_rvv(s2, s3, s4, s5, filter, offset,
round_bits, vl);
vuint16mf2_t d3 = highbd_convolve4_4_rvv(s3, s4, s5, s6, filter, offset,
round_bits, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window
s0 = s4;
s1 = s5;
s2 = s6;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
do {
int height = h;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 3 rows
vint16m1_t s0, s1, s2;
load_s16_8x3(s, src_stride, &s0, &s1, &s2, vl);
s += 3 * src_stride;
do {
// Load next 4 rows
vint16m1_t s3, s4, s5, s6;
load_s16_8x4(s, src_stride, &s3, &s4, &s5, &s6, vl);
// Convolve 4 output rows
vuint16m1_t d0 = highbd_convolve4_8_rvv(s0, s1, s2, s3, filter, offset,
round_bits, vl);
vuint16m1_t d1 = highbd_convolve4_8_rvv(s1, s2, s3, s4, filter, offset,
round_bits, vl);
vuint16m1_t d2 = highbd_convolve4_8_rvv(s2, s3, s4, s5, filter, offset,
round_bits, vl);
vuint16m1_t d3 = highbd_convolve4_8_rvv(s3, s4, s5, s6, filter, offset,
round_bits, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window
s0 = s4;
s1 = s5;
s2 = s6;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += vl;
dst_ptr += vl;
w -= vl;
} while (w > 0);
}
}
static inline void highbd_dist_wtd_convolve_y_8tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *y_filter_ptr, const int offset,
const int32_t round_bits) {
const int16_t *filter = y_filter_ptr;
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
// Load initial 7 rows
vint16mf2_t s0, s1, s2, s3, s4, s5, s6;
load_s16_4x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, vl);
s += 7 * src_stride;
do {
// Load next 4 rows
vint16mf2_t s7, s8, s9, s10;
load_s16_4x4(s, src_stride, &s7, &s8, &s9, &s10, vl);
// Convolve 4 output rows
vuint16mf2_t d0 = highbd_convolve8_4_rvv(
s0, s1, s2, s3, s4, s5, s6, s7, filter, offset_vec, round_bits, vl);
vuint16mf2_t d1 = highbd_convolve8_4_rvv(
s1, s2, s3, s4, s5, s6, s7, s8, filter, offset_vec, round_bits, vl);
vuint16mf2_t d2 = highbd_convolve8_4_rvv(
s2, s3, s4, s5, s6, s7, s8, s9, filter, offset_vec, round_bits, vl);
vuint16mf2_t d3 = highbd_convolve8_4_rvv(
s3, s4, s5, s6, s7, s8, s9, s10, filter, offset_vec, round_bits, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
int height = h;
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 7 rows
vint16m1_t s0, s1, s2, s3, s4, s5, s6;
load_s16_8x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, vl);
s += 7 * src_stride;
do {
// Load next 4 rows
vint16m1_t s7, s8, s9, s10;
load_s16_8x4(s, src_stride, &s7, &s8, &s9, &s10, vl);
// Convolve 4 output rows
vuint16m1_t d0 = highbd_convolve8_8_rvv(
s0, s1, s2, s3, s4, s5, s6, s7, filter, offset_vec, round_bits, vl);
vuint16m1_t d1 = highbd_convolve8_8_rvv(
s1, s2, s3, s4, s5, s6, s7, s8, filter, offset_vec, round_bits, vl);
vuint16m1_t d2 = highbd_convolve8_8_rvv(
s2, s3, s4, s5, s6, s7, s8, s9, filter, offset_vec, round_bits, vl);
vuint16m1_t d3 =
highbd_convolve8_8_rvv(s3, s4, s5, s6, s7, s8, s9, s10, filter,
offset_vec, round_bits, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
// Shift window
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += vl;
dst_ptr += vl;
w -= vl;
} while (w > 0);
}
}
void av1_highbd_dist_wtd_convolve_y_rvv(
const uint16_t *src, int src_stride, uint16_t *dst, int dst_stride, int w,
int h, const InterpFilterParams *filter_params_y, const int subpel_y_qn,
ConvolveParams *conv_params, int bd) {
DECLARE_ALIGNED(16, uint16_t,
im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]);
CONV_BUF_TYPE *dst16 = conv_params->dst;
const int y_filter_taps = get_filter_tap(filter_params_y, subpel_y_qn);
int dst16_stride = conv_params->dst_stride;
const int im_stride = MAX_SB_SIZE;
const int vert_offset = filter_params_y->taps / 2 - 1;
assert(FILTER_BITS == COMPOUND_ROUND1_BITS);
const int round_offset_conv = (1 << (conv_params->round_0 - 1)) +
(1 << (bd + FILTER_BITS)) +
(1 << (bd + FILTER_BITS - 1));
const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_y, subpel_y_qn & SUBPEL_MASK);
src -= vert_offset * src_stride;
int round_bits, shift_bits, offset_bits;
if (bd == 12) {
round_bits = ROUND0_BITS + 2;
shift_bits = ROUND_SHIFT - 2;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS - 2;
} else {
round_bits = ROUND0_BITS;
shift_bits = ROUND_SHIFT;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS;
}
if (conv_params->do_average) {
if (y_filter_taps <= 4) {
highbd_dist_wtd_convolve_y_4tap_rvv(
src + 2 * src_stride, src_stride, im_block, im_stride, w, h,
y_filter_ptr, round_offset_conv, round_bits);
} else if (y_filter_taps == 6) {
highbd_dist_wtd_convolve_y_6tap_rvv(
src + src_stride, src_stride, im_block, im_stride, w, h, y_filter_ptr,
round_offset_conv, round_bits);
} else {
highbd_dist_wtd_convolve_y_8tap_rvv(src, src_stride, im_block, im_stride,
w, h, y_filter_ptr, round_offset_conv,
round_bits);
}
if (conv_params->use_dist_wtd_comp_avg) {
highbd_dist_wtd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
} else {
highbd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
}
} else {
if (y_filter_taps <= 4) {
highbd_dist_wtd_convolve_y_4tap_rvv(
src + 2 * src_stride, src_stride, dst16, dst16_stride, w, h,
y_filter_ptr, round_offset_conv, round_bits);
} else if (y_filter_taps == 6) {
highbd_dist_wtd_convolve_y_6tap_rvv(src + src_stride, src_stride, dst16,
dst16_stride, w, h, y_filter_ptr,
round_offset_conv, round_bits);
} else {
highbd_dist_wtd_convolve_y_8tap_rvv(src, src_stride, dst16, dst16_stride,
w, h, y_filter_ptr, round_offset_conv,
round_bits);
}
}
}
static inline void highbd_2d_copy_rvv(const uint16_t *src_ptr, int src_stride,
uint16_t *dst_ptr, int dst_stride, int w,
int h, int round_bits, const int offset) {
assert(h % 4 == 0);
const uint16_t round_val = (1 << round_bits);
int height = h;
if (w <= 4) {
const size_t vl = __riscv_vsetvl_e16mf2(w);
vuint16mf2_t vec_offset = __riscv_vmv_v_x_u16mf2(offset, vl);
do {
vuint16mf2_t s0, s1, s2, s3;
load_u16_4x4(src_ptr, src_stride, &s0, &s1, &s2, &s3, vl);
vuint16mf2_t d0 = __riscv_vmacc_vx_u16mf2(vec_offset, round_val, s0, vl);
vuint16mf2_t d1 = __riscv_vmacc_vx_u16mf2(vec_offset, round_val, s1, vl);
vuint16mf2_t d2 = __riscv_vmacc_vx_u16mf2(vec_offset, round_val, s2, vl);
vuint16mf2_t d3 = __riscv_vmacc_vx_u16mf2(vec_offset, round_val, s3, vl);
store_u16_4x4(dst_ptr, dst_stride, d0, d1, d2, d3, vl);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
} while (height > 0);
} else {
size_t vl_max = __riscv_vsetvlmax_e16m1();
vuint16m1_t vec_offset = __riscv_vmv_v_x_u16m1(offset, vl_max);
do {
const uint16_t *s = src_ptr;
uint16_t *d = dst_ptr;
int width = w;
do {
size_t vl = __riscv_vsetvl_e16m1(width);
vuint16m1_t s0, s1, s2, s3;
load_u16_8x4(s, src_stride, &s0, &s1, &s2, &s3, vl);
// apply shift and add round offset
vuint16m1_t d0 = __riscv_vmacc_vx_u16m1(vec_offset, round_val, s0, vl);
vuint16m1_t d1 = __riscv_vmacc_vx_u16m1(vec_offset, round_val, s1, vl);
vuint16m1_t d2 = __riscv_vmacc_vx_u16m1(vec_offset, round_val, s2, vl);
vuint16m1_t d3 = __riscv_vmacc_vx_u16m1(vec_offset, round_val, s3, vl);
// store results
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s += vl;
d += vl;
width -= vl;
} while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
height -= 4;
} while (height > 0);
}
}
void av1_highbd_dist_wtd_convolve_2d_copy_rvv(const uint16_t *src,
int src_stride, uint16_t *dst,
int dst_stride, int w, int h,
ConvolveParams *conv_params,
int bd) {
DECLARE_ALIGNED(16, uint16_t,
im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]);
const int im_stride = MAX_SB_SIZE;
CONV_BUF_TYPE *dst16 = conv_params->dst;
int dst16_stride = conv_params->dst_stride;
const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0;
const int round_offset = (1 << (offset_bits - conv_params->round_1)) +
(1 << (offset_bits - conv_params->round_1 - 1));
const int round_bits =
2 * FILTER_BITS - conv_params->round_0 - conv_params->round_1;
assert(round_bits >= 0);
if (conv_params->do_average) {
highbd_2d_copy_rvv(src, src_stride, im_block, im_stride, w, h, round_bits,
round_offset);
} else {
highbd_2d_copy_rvv(src, src_stride, dst16, dst16_stride, w, h, round_bits,
round_offset);
}
if (conv_params->do_average) {
int shift_bits;
if (bd == 12) {
shift_bits = ROUND_SHIFT - 2;
} else {
shift_bits = ROUND_SHIFT;
}
if (conv_params->use_dist_wtd_comp_avg) {
highbd_dist_wtd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
} else {
highbd_comp_avg_rvv(im_block, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
}
}
}
static inline vuint16mf2_t highbd_convolve6_4_2d_v_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const vint16mf2_t s4, const vint16mf2_t s5,
const int16_t *y_filter, const vint32m1_t offset, size_t vl) {
// Values at indices 0 and 7 of y_filter are zero.
// Accumulate widening multiplications into the offset vector.
vint32m1_t sum = __riscv_vwmacc_vx_i32m1(offset, y_filter[1], s0, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[2], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[3], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[4], s3, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[5], s4, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[6], s5, vl);
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
return __riscv_vnclipu_wx_u16mf2(sum_u32, COMPOUND_ROUND1_BITS,
__RISCV_VXRM_RNU, vl);
#else
return __riscv_vnclipu_wx_u16mf2(sum_u32, COMPOUND_ROUND1_BITS, vl);
#endif
}
static inline vuint16m1_t highbd_convolve6_8_2d_v_rvv(
const vint16m1_t s0, const vint16m1_t s1, const vint16m1_t s2,
const vint16m1_t s3, const vint16m1_t s4, const vint16m1_t s5,
const int16_t *y_filter, const vint32m2_t offset, size_t vl) {
// Values at indices 0 and 7 of y_filter are zero.
// Perform widening multiply-accumulate starting with the offset vector.
vint32m2_t sum = __riscv_vwmacc_vx_i32m2(offset, y_filter[1], s0, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[2], s1, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[3], s2, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[4], s3, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[5], s4, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[6], s5, vl);
vuint32m2_t sum_u32 =
__riscv_vreinterpret_v_i32m2_u32m2(__riscv_vmax_vx_i32m2(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
return __riscv_vnclipu_wx_u16m1(sum_u32, COMPOUND_ROUND1_BITS,
__RISCV_VXRM_RNU, vl);
#else
return __riscv_vnclipu_wx_u16m1(sum_u32, COMPOUND_ROUND1_BITS, vl);
#endif
}
static inline void highbd_dist_wtd_convolve_2d_vert_6tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *y_filter_ptr, int offset) {
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
// Broadcast offset to a 32-bit vector
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 5 rows
vint16mf2_t s0, s1, s2, s3, s4;
load_s16_4x5(s, src_stride, &s0, &s1, &s2, &s3, &s4, vl);
s += 5 * src_stride;
do {
vint16mf2_t s5, s6, s7, s8;
load_s16_4x4(s, src_stride, &s5, &s6, &s7, &s8, vl);
// Perform 6-tap convolution for 4 rows
vuint16mf2_t d0 = highbd_convolve6_4_2d_v_rvv(
s0, s1, s2, s3, s4, s5, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d1 = highbd_convolve6_4_2d_v_rvv(
s1, s2, s3, s4, s5, s6, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d2 = highbd_convolve6_4_2d_v_rvv(
s2, s3, s4, s5, s6, s7, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d3 = highbd_convolve6_4_2d_v_rvv(
s3, s4, s5, s6, s7, s8, y_filter_ptr, offset_vec, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
// Update sliding window state
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
// w > 4 case
do {
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
int height = h;
vint16m1_t s0, s1, s2, s3, s4;
load_s16_8x5(s, src_stride, &s0, &s1, &s2, &s3, &s4, vl);
s += 5 * src_stride;
do {
vint16m1_t s5, s6, s7, s8;
load_s16_8x4(s, src_stride, &s5, &s6, &s7, &s8, vl);
vuint16m1_t d0 = highbd_convolve6_8_2d_v_rvv(
s0, s1, s2, s3, s4, s5, y_filter_ptr, offset_vec, vl);
vuint16m1_t d1 = highbd_convolve6_8_2d_v_rvv(
s1, s2, s3, s4, s5, s6, y_filter_ptr, offset_vec, vl);
vuint16m1_t d2 = highbd_convolve6_8_2d_v_rvv(
s2, s3, s4, s5, s6, s7, y_filter_ptr, offset_vec, vl);
vuint16m1_t d3 = highbd_convolve6_8_2d_v_rvv(
s3, s4, s5, s6, s7, s8, y_filter_ptr, offset_vec, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += vl;
dst_ptr += vl;
w -= (int)vl;
} while (w > 0);
}
}
static inline vuint16mf2_t highbd_convolve8_4_2d_v_rvv(
const vint16mf2_t s0, const vint16mf2_t s1, const vint16mf2_t s2,
const vint16mf2_t s3, const vint16mf2_t s4, const vint16mf2_t s5,
const vint16mf2_t s6, const vint16mf2_t s7, const int16_t *y_filter,
const vint32m1_t offset, size_t vl) {
// Perform widening multiply-accumulate for all 8 taps.
// Accumulate directly into the offset vector.
vint32m1_t sum = __riscv_vwmacc_vx_i32m1(offset, y_filter[0], s0, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[3], s3, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[4], s4, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[5], s5, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[6], s6, vl);
sum = __riscv_vwmacc_vx_i32m1(sum, y_filter[7], s7, vl);
// NEON vqrshrun_n_s32 -> RVV vnclipu_wx (with default RNU rounding)
vuint32m1_t sum_u32 =
__riscv_vreinterpret_v_i32m1_u32m1(__riscv_vmax_vx_i32m1(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
return __riscv_vnclipu_wx_u16mf2(sum_u32, COMPOUND_ROUND1_BITS,
__RISCV_VXRM_RNU, vl);
#else
return __riscv_vnclipu_wx_u16mf2(sum_u32, COMPOUND_ROUND1_BITS, vl);
#endif
}
static inline vuint16m1_t highbd_convolve8_8_2d_v_rvv(
const vint16m1_t s0, const vint16m1_t s1, const vint16m1_t s2,
const vint16m1_t s3, const vint16m1_t s4, const vint16m1_t s5,
const vint16m1_t s6, const vint16m1_t s7, const int16_t *y_filter,
const vint32m2_t offset, size_t vl) {
// Perform widening multiply-accumulate for all 8 taps.
vint32m2_t sum = __riscv_vwmacc_vx_i32m2(offset, y_filter[0], s0, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[1], s1, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[2], s2, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[3], s3, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[4], s4, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[5], s5, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[6], s6, vl);
sum = __riscv_vwmacc_vx_i32m2(sum, y_filter[7], s7, vl);
// NEON vqrshrun_n_s32 -> RVV vnclipu_wx (with default RNU rounding)
vuint32m2_t sum_u32 =
__riscv_vreinterpret_v_i32m2_u32m2(__riscv_vmax_vx_i32m2(sum, 0, vl));
#if __riscv_v_intrinsic >= 12000
return __riscv_vnclipu_wx_u16m1(sum_u32, COMPOUND_ROUND1_BITS,
__RISCV_VXRM_RNU, vl);
#else
return __riscv_vnclipu_wx_u16m1(sum_u32, COMPOUND_ROUND1_BITS, vl);
#endif
}
static inline void highbd_dist_wtd_convolve_2d_vert_8tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *y_filter_ptr, int offset) {
size_t vl = __riscv_vsetvl_e16m1(w);
if (w == 4) {
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
// Load initial 7 rows for 8-tap filter
vint16mf2_t s0, s1, s2, s3, s4, s5, s6;
load_s16_4x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, vl);
s += 7 * src_stride;
do {
vint16mf2_t s7, s8, s9, s10;
load_s16_4x4(s, src_stride, &s7, &s8, &s9, &s10, vl);
// Perform 8-tap convolution for 4 rows
vuint16mf2_t d0 = highbd_convolve8_4_2d_v_rvv(
s0, s1, s2, s3, s4, s5, s6, s7, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d1 = highbd_convolve8_4_2d_v_rvv(
s1, s2, s3, s4, s5, s6, s7, s8, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d2 = highbd_convolve8_4_2d_v_rvv(
s2, s3, s4, s5, s6, s7, s8, s9, y_filter_ptr, offset_vec, vl);
vuint16mf2_t d3 = highbd_convolve8_4_2d_v_rvv(
s3, s4, s5, s6, s7, s8, s9, s10, y_filter_ptr, offset_vec, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
// Update sliding window state
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
// w > 4 case
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
int height = h;
vint16m1_t s0, s1, s2, s3, s4, s5, s6;
load_s16_8x7(s, src_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, vl);
s += 7 * src_stride;
do {
vint16m1_t s7, s8, s9, s10;
load_s16_8x4(s, src_stride, &s7, &s8, &s9, &s10, vl);
vuint16m1_t d0 = highbd_convolve8_8_2d_v_rvv(
s0, s1, s2, s3, s4, s5, s6, s7, y_filter_ptr, offset_vec, vl);
vuint16m1_t d1 = highbd_convolve8_8_2d_v_rvv(
s1, s2, s3, s4, s5, s6, s7, s8, y_filter_ptr, offset_vec, vl);
vuint16m1_t d2 = highbd_convolve8_8_2d_v_rvv(
s2, s3, s4, s5, s6, s7, s8, s9, y_filter_ptr, offset_vec, vl);
vuint16m1_t d3 = highbd_convolve8_8_2d_v_rvv(
s3, s4, s5, s6, s7, s8, s9, s10, y_filter_ptr, offset_vec, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += vl;
dst_ptr += vl;
w -= (int)vl;
} while (w > 0);
}
}
static inline void highbd_dist_wtd_convolve_2d_horiz_6tap_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *x_filter_ptr, const int offset,
const int32_t round_bits) {
const int16_t *filter = x_filter_ptr;
size_t vl = __riscv_vsetvl_e16m1(w);
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
const int16_t *s = (const int16_t *)src_ptr;
uint16_t *d = dst_ptr;
int height = h;
// Process 4 rows at a time to reduce loop overhead
while (height >= 4) {
vint16m1_t s00, s01, s02, s03, s04, s05;
vint16m1_t s10, s11, s12, s13, s14, s15;
vint16m1_t s20, s21, s22, s23, s24, s25;
vint16m1_t s30, s31, s32, s33, s34, s35;
// Load 6 vectors per row with stride 1 (horizontal overlap)
load_s16_8x6(s + 0 * src_stride, 1, &s00, &s01, &s02, &s03, &s04, &s05,
vl);
load_s16_8x6(s + 1 * src_stride, 1, &s10, &s11, &s12, &s13, &s14, &s15,
vl);
load_s16_8x6(s + 2 * src_stride, 1, &s20, &s21, &s22, &s23, &s24, &s25,
vl);
load_s16_8x6(s + 3 * src_stride, 1, &s30, &s31, &s32, &s33, &s34, &s35,
vl);
vuint16m1_t d0 = highbd_convolve6_8_rvv(
s00, s01, s02, s03, s04, s05, filter, offset_vec, round_bits, vl);
vuint16m1_t d1 = highbd_convolve6_8_rvv(
s10, s11, s12, s13, s14, s15, filter, offset_vec, round_bits, vl);
vuint16m1_t d2 = highbd_convolve6_8_rvv(
s20, s21, s22, s23, s24, s25, filter, offset_vec, round_bits, vl);
vuint16m1_t d3 = highbd_convolve6_8_rvv(
s30, s31, s32, s33, s34, s35, filter, offset_vec, round_bits, vl);
store_u16_8x4(d, dst_stride, d0, d1, d2, d3, vl);
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
}
// Handle remaining rows
while (height > 0) {
vint16m1_t s00, s01, s02, s03, s04, s05;
load_s16_8x6(s, 1, &s00, &s01, &s02, &s03, &s04, &s05, vl);
vuint16m1_t d0 = highbd_convolve6_8_rvv(
s00, s01, s02, s03, s04, s05, filter, offset_vec, round_bits, vl);
__riscv_vse16_v_u16m1(d, d0, vl);
s += src_stride;
d += dst_stride;
height--;
}
src_ptr += vl;
dst_ptr += vl;
w -= (int)vl;
} while (w > 0);
}
static inline void highbd_dist_wtd_convolve_2d_horiz_rvv(
const uint16_t *src_ptr, int src_stride, uint16_t *dst_ptr, int dst_stride,
int w, int h, const int16_t *x_filter_ptr, const int offset,
const int32_t round_bits) {
assert(h >= 5);
if (w == 4) {
size_t vl = __riscv_vsetvl_e16mf2(4);
vint32m1_t offset_vec = __riscv_vmv_v_x_i32m1(offset, vl);
const int16_t *filter = x_filter_ptr + 2; // Use middle 4 taps
const int16_t *s = (const int16_t *)(src_ptr + 1);
uint16_t *d = dst_ptr;
while (h >= 4) {
vint16mf2_t s00, s01, s02, s03;
vint16mf2_t s10, s11, s12, s13;
vint16mf2_t s20, s21, s22, s23;
vint16mf2_t s30, s31, s32, s33;
load_s16_4x4(s + 0 * src_stride, 1, &s00, &s01, &s02, &s03, vl);
load_s16_4x4(s + 1 * src_stride, 1, &s10, &s11, &s12, &s13, vl);
load_s16_4x4(s + 2 * src_stride, 1, &s20, &s21, &s22, &s23, vl);
load_s16_4x4(s + 3 * src_stride, 1, &s30, &s31, &s32, &s33, vl);
vuint16mf2_t d0 = highbd_convolve4_4_x_rvv(s00, s01, s02, s03, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d1 = highbd_convolve4_4_x_rvv(s10, s11, s12, s13, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d2 = highbd_convolve4_4_x_rvv(s20, s21, s22, s23, filter,
offset_vec, round_bits, vl);
vuint16mf2_t d3 = highbd_convolve4_4_x_rvv(s30, s31, s32, s33, filter,
offset_vec, round_bits, vl);
store_u16_4x4(d, dst_stride, d0, d1, d2, d3, vl);
s += 4 * src_stride;
d += 4 * dst_stride;
h -= 4;
}
while (h > 0) {
vint16mf2_t s00, s01, s02, s03;
load_s16_4x4(s, 1, &s00, &s01, &s02, &s03, vl);
vuint16mf2_t d0 = highbd_convolve4_4_x_rvv(s00, s01, s02, s03, filter,
offset_vec, round_bits, vl);
__riscv_vse16_v_u16mf2(d, d0, vl);
s += src_stride;
d += dst_stride;
h--;
}
} else {
// w > 4 case using 8-tap filter
const int16_t *filter = x_filter_ptr;
size_t vl = __riscv_vsetvl_e16m1(w);
vint32m2_t offset_vec = __riscv_vmv_v_x_i32m2(offset, vl);
do {
const int16_t *s_base = (const int16_t *)src_ptr;
uint16_t *d_base = dst_ptr;
int height = h;
while (height >= 4) {
vint16m1_t s00, s01, s02, s03, s04, s05, s06, s07;
vint16m1_t s10, s11, s12, s13, s14, s15, s16, s17;
vint16m1_t s20, s21, s22, s23, s24, s25, s26, s27;
vint16m1_t s30, s31, s32, s33, s34, s35, s36, s37;
load_s16_8x8(s_base + 0 * src_stride, 1, &s00, &s01, &s02, &s03, &s04,
&s05, &s06, &s07, vl);
load_s16_8x8(s_base + 1 * src_stride, 1, &s10, &s11, &s12, &s13, &s14,
&s15, &s16, &s17, vl);
load_s16_8x8(s_base + 2 * src_stride, 1, &s20, &s21, &s22, &s23, &s24,
&s25, &s26, &s27, vl);
load_s16_8x8(s_base + 3 * src_stride, 1, &s30, &s31, &s32, &s33, &s34,
&s35, &s36, &s37, vl);
vuint16m1_t d0 =
highbd_convolve8_8_rvv(s00, s01, s02, s03, s04, s05, s06, s07,
filter, offset_vec, round_bits, vl);
vuint16m1_t d1 =
highbd_convolve8_8_rvv(s10, s11, s12, s13, s14, s15, s16, s17,
filter, offset_vec, round_bits, vl);
vuint16m1_t d2 =
highbd_convolve8_8_rvv(s20, s21, s22, s23, s24, s25, s26, s27,
filter, offset_vec, round_bits, vl);
vuint16m1_t d3 =
highbd_convolve8_8_rvv(s30, s31, s32, s33, s34, s35, s36, s37,
filter, offset_vec, round_bits, vl);
store_u16_8x4(d_base, dst_stride, d0, d1, d2, d3, vl);
s_base += 4 * src_stride;
d_base += 4 * dst_stride;
height -= 4;
}
while (height > 0) {
vint16m1_t s00, s01, s02, s03, s04, s05, s06, s07;
load_s16_8x8(s_base, 1, &s00, &s01, &s02, &s03, &s04, &s05, &s06, &s07,
vl);
vuint16m1_t d0 =
highbd_convolve8_8_rvv(s00, s01, s02, s03, s04, s05, s06, s07,
filter, offset_vec, round_bits, vl);
__riscv_vse16_v_u16m1(d_base, d0, vl);
s_base += src_stride;
d_base += dst_stride;
height--;
}
src_ptr += vl;
dst_ptr += vl;
w -= (int)vl;
} while (w > 0);
}
}
void av1_highbd_dist_wtd_convolve_2d_rvv(
const uint16_t *src, int src_stride, uint16_t *dst, int dst_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, int bd) {
DECLARE_ALIGNED(16, uint16_t,
im_block[(MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]);
DECLARE_ALIGNED(16, uint16_t,
im_block2[(MAX_SB_SIZE + MAX_FILTER_TAP) * MAX_SB_SIZE]);
CONV_BUF_TYPE *dst16 = conv_params->dst;
int dst16_stride = conv_params->dst_stride;
const int x_filter_taps = get_filter_tap(filter_params_x, subpel_x_qn);
const int clamped_x_taps = x_filter_taps < 6 ? 6 : x_filter_taps;
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 = clamped_x_taps / 2 - 1;
const int round_offset_conv_x =
(1 << (bd + FILTER_BITS - 1)) + (1 << (conv_params->round_0 - 1));
const int y_offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0;
const int round_offset_conv_y = (1 << y_offset_bits);
const uint16_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);
// 1. Horizontal Filter Pass
int round_bits;
if (bd == 12) {
round_bits = ROUND0_BITS + 2;
} else {
round_bits = ROUND0_BITS;
}
if (x_filter_taps <= 6 && w != 4) {
highbd_dist_wtd_convolve_2d_horiz_6tap_rvv(src_ptr, src_stride, im_block,
im_stride, w, im_h, x_filter_ptr,
round_offset_conv_x, round_bits);
} else {
highbd_dist_wtd_convolve_2d_horiz_rvv(src_ptr, src_stride, im_block,
im_stride, w, im_h, x_filter_ptr,
round_offset_conv_x, round_bits);
}
// 2. Vertical Filter Pass
if (y_filter_taps <= 6) {
if (conv_params->do_average) {
highbd_dist_wtd_convolve_2d_vert_6tap_rvv(im_block, im_stride, im_block2,
im_stride, w, h, y_filter_ptr,
round_offset_conv_y);
} else {
highbd_dist_wtd_convolve_2d_vert_6tap_rvv(
im_block, im_stride, dst16, dst16_stride, w, h, y_filter_ptr,
round_offset_conv_y);
}
} else {
if (conv_params->do_average) {
highbd_dist_wtd_convolve_2d_vert_8tap_rvv(im_block, im_stride, im_block2,
im_stride, w, h, y_filter_ptr,
round_offset_conv_y);
} else {
highbd_dist_wtd_convolve_2d_vert_8tap_rvv(
im_block, im_stride, dst16, dst16_stride, w, h, y_filter_ptr,
round_offset_conv_y);
}
}
// 3. Compound Averaging
if (conv_params->do_average) {
int shift_bits, offset_bits;
if (bd == 12) {
shift_bits = ROUND_SHIFT - 2;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS - 2;
} else {
shift_bits = ROUND_SHIFT;
offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS;
}
if (conv_params->use_dist_wtd_comp_avg) {
highbd_dist_wtd_comp_avg_rvv(im_block2, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
} else {
highbd_comp_avg_rvv(im_block2, im_stride, dst, dst_stride, w, h,
conv_params, bd, shift_bits, offset_bits);
}
}
}