ref: 7a48bfab4703a4b10aed6cbf42d00ef8cda7ba70
dir: /vpx_dsp/arm/vpx_convolve8_neon.c/
/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <arm_neon.h>
#include <assert.h>
#include "./vpx_config.h"
#include "./vpx_dsp_rtcd.h"
#include "vpx/vpx_integer.h"
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_ports/mem.h"
// Note:
// 1. src is not always 32-bit aligned, so don't call vld1_lane_u32(src).
// 2. After refactoring the shared code in kernel loops with inline functions,
// the decoder speed dropped a lot when using gcc compiler. Therefore there is
// no refactoring for those parts by now.
// 3. For horizontal convolve, there is an alternative optimization that
// convolves a single row in each loop. For each row, 8 sample banks with 4 or 8
// samples in each are read from memory: src, (src+1), (src+2), (src+3),
// (src+4), (src+5), (src+6), (src+7), or prepared by vector extract
// instructions. This optimization is much faster in speed unit test, but slowed
// down the whole decoder by 5%.
static INLINE void load_8x4(const uint8_t *s, ptrdiff_t p, uint8x8_t *s0,
uint8x8_t *s1, uint8x8_t *s2, uint8x8_t *s3) {
*s0 = vld1_u8(s);
s += p;
*s1 = vld1_u8(s);
s += p;
*s2 = vld1_u8(s);
s += p;
*s3 = vld1_u8(s);
}
static INLINE void load_8x8(const uint8_t *s, ptrdiff_t p, uint8x8_t *s0,
uint8x8_t *s1, uint8x8_t *s2, uint8x8_t *s3,
uint8x8_t *s4, uint8x8_t *s5, uint8x8_t *s6,
uint8x8_t *s7) {
*s0 = vld1_u8(s);
s += p;
*s1 = vld1_u8(s);
s += p;
*s2 = vld1_u8(s);
s += p;
*s3 = vld1_u8(s);
s += p;
*s4 = vld1_u8(s);
s += p;
*s5 = vld1_u8(s);
s += p;
*s6 = vld1_u8(s);
s += p;
*s7 = vld1_u8(s);
}
static INLINE void store_8x8(uint8_t *s, ptrdiff_t p, const uint8x8_t s0,
const uint8x8_t s1, const uint8x8_t s2,
const uint8x8_t s3, const uint8x8_t s4,
const uint8x8_t s5, const uint8x8_t s6,
const uint8x8_t s7) {
vst1_u8(s, s0);
s += p;
vst1_u8(s, s1);
s += p;
vst1_u8(s, s2);
s += p;
vst1_u8(s, s3);
s += p;
vst1_u8(s, s4);
s += p;
vst1_u8(s, s5);
s += p;
vst1_u8(s, s6);
s += p;
vst1_u8(s, s7);
}
static INLINE int16x4_t convolve8_4(int16x4_t s0, int16x4_t s1, int16x4_t s2,
int16x4_t s3, int16x4_t s4, int16x4_t s5,
int16x4_t s6, int16x4_t s7,
int16x8_t filters, int16x4_t filter3,
int16x4_t filter4) {
const int16x4_t filters_lo = vget_low_s16(filters);
const int16x4_t filters_hi = vget_high_s16(filters);
int16x4_t sum = vdup_n_s16(0);
sum = vmla_lane_s16(sum, s0, filters_lo, 0);
sum = vmla_lane_s16(sum, s1, filters_lo, 1);
sum = vmla_lane_s16(sum, s2, filters_lo, 2);
sum = vmla_lane_s16(sum, s5, filters_hi, 1);
sum = vmla_lane_s16(sum, s6, filters_hi, 2);
sum = vmla_lane_s16(sum, s7, filters_hi, 3);
sum = vqadd_s16(sum, vmul_s16(s3, filter3));
sum = vqadd_s16(sum, vmul_s16(s4, filter4));
return sum;
}
static INLINE int16x8_t convolve8_8(int16x8_t s0, int16x8_t s1, int16x8_t s2,
int16x8_t s3, int16x8_t s4, int16x8_t s5,
int16x8_t s6, int16x8_t s7,
int16x8_t filters, int16x8_t filter3,
int16x8_t filter4) {
const int16x4_t filters_lo = vget_low_s16(filters);
const int16x4_t filters_hi = vget_high_s16(filters);
int16x8_t sum = vdupq_n_s16(0);
sum = vmlaq_lane_s16(sum, s0, filters_lo, 0);
sum = vmlaq_lane_s16(sum, s1, filters_lo, 1);
sum = vmlaq_lane_s16(sum, s2, filters_lo, 2);
sum = vmlaq_lane_s16(sum, s5, filters_hi, 1);
sum = vmlaq_lane_s16(sum, s6, filters_hi, 2);
sum = vmlaq_lane_s16(sum, s7, filters_hi, 3);
sum = vqaddq_s16(sum, vmulq_s16(s3, filter3));
sum = vqaddq_s16(sum, vmulq_s16(s4, filter4));
return sum;
}
void vpx_convolve8_horiz_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, // unused
int y_step_q4, // unused
int w, int h) {
const int16x8_t filters = vld1q_s16(filter_x);
uint8x8_t t0, t1, t2, t3;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(x_step_q4 == 16);
(void)x_step_q4;
(void)y_step_q4;
(void)filter_y;
src -= 3;
if (h == 4) {
uint8x8_t d01, d23;
int16x4_t filter3, filter4, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0,
d1, d2, d3;
int16x8_t tt0, tt1, tt2, tt3;
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
filter3 = vdup_lane_s16(vget_low_s16(filters), 3);
filter4 = vdup_lane_s16(vget_high_s16(filters), 0);
load_8x4(src, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
tt1 = vreinterpretq_s16_u16(vmovl_u8(t1));
tt2 = vreinterpretq_s16_u16(vmovl_u8(t2));
tt3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s0 = vget_low_s16(tt0);
s1 = vget_low_s16(tt1);
s2 = vget_low_s16(tt2);
s3 = vget_low_s16(tt3);
s4 = vget_high_s16(tt0);
s5 = vget_high_s16(tt1);
s6 = vget_high_s16(tt2);
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
src += 7;
do {
load_8x4(src, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
tt1 = vreinterpretq_s16_u16(vmovl_u8(t1));
tt2 = vreinterpretq_s16_u16(vmovl_u8(t2));
tt3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s7 = vget_low_s16(tt0);
s8 = vget_low_s16(tt1);
s9 = vget_low_s16(tt2);
s10 = vget_low_s16(tt3);
d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), 7);
d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), 7);
transpose_u8_4x4(&d01, &d23);
vst1_lane_u32((uint32_t *)(dst + 0 * dst_stride),
vreinterpret_u32_u8(d01), 0);
vst1_lane_u32((uint32_t *)(dst + 1 * dst_stride),
vreinterpret_u32_u8(d23), 0);
vst1_lane_u32((uint32_t *)(dst + 2 * dst_stride),
vreinterpret_u32_u8(d01), 1);
vst1_lane_u32((uint32_t *)(dst + 3 * dst_stride),
vreinterpret_u32_u8(d23), 1);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
src += 4;
dst += 4;
w -= 4;
} while (w > 0);
} else {
const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
int width;
const uint8_t *s;
uint8x8_t t4, t5, t6, t7;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
if (w == 4) {
do {
load_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
load_8x8(src + 7, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
src += 8 * src_stride;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(dst + 4 * dst_stride);
__builtin_prefetch(dst + 5 * dst_stride);
__builtin_prefetch(dst + 6 * dst_stride);
__builtin_prefetch(dst + 7 * dst_stride);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
s9 = vreinterpretq_s16_u16(vmovl_u8(t2));
s10 = vreinterpretq_s16_u16(vmovl_u8(t3));
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
__builtin_prefetch(src + 7 * src_stride);
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
t0 = vqrshrun_n_s16(d0, 7);
t1 = vqrshrun_n_s16(d1, 7);
t2 = vqrshrun_n_s16(d2, 7);
t3 = vqrshrun_n_s16(d3, 7);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t1), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t2), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t3), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0), 1);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t1), 1);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t2), 1);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t3), 1);
dst += dst_stride;
h -= 8;
} while (h > 0);
} else {
uint8_t *d;
int16x8_t s11, s12, s13, s14, d4, d5, d6, d7;
do {
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
__builtin_prefetch(src + 7 * src_stride);
load_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
width = w;
s = src + 7;
d = dst;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(dst + 4 * dst_stride);
__builtin_prefetch(dst + 5 * dst_stride);
__builtin_prefetch(dst + 6 * dst_stride);
__builtin_prefetch(dst + 7 * dst_stride);
do {
load_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
s9 = vreinterpretq_s16_u16(vmovl_u8(t2));
s10 = vreinterpretq_s16_u16(vmovl_u8(t3));
s11 = vreinterpretq_s16_u16(vmovl_u8(t4));
s12 = vreinterpretq_s16_u16(vmovl_u8(t5));
s13 = vreinterpretq_s16_u16(vmovl_u8(t6));
s14 = vreinterpretq_s16_u16(vmovl_u8(t7));
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, filter3,
filter4);
d5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, filter3,
filter4);
d6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, filter3,
filter4);
d7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters,
filter3, filter4);
t0 = vqrshrun_n_s16(d0, 7);
t1 = vqrshrun_n_s16(d1, 7);
t2 = vqrshrun_n_s16(d2, 7);
t3 = vqrshrun_n_s16(d3, 7);
t4 = vqrshrun_n_s16(d4, 7);
t5 = vqrshrun_n_s16(d5, 7);
t6 = vqrshrun_n_s16(d6, 7);
t7 = vqrshrun_n_s16(d7, 7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
store_8x8(d, dst_stride, t0, t1, t2, t3, t4, t5, t6, t7);
s0 = s8;
s1 = s9;
s2 = s10;
s3 = s11;
s4 = s12;
s5 = s13;
s6 = s14;
s += 8;
d += 8;
width -= 8;
} while (width > 0);
src += 8 * src_stride;
dst += 8 * dst_stride;
h -= 8;
} while (h > 0);
}
}
}
void vpx_convolve8_avg_horiz_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const int16_t *filter_x, int x_step_q4,
const int16_t *filter_y, // unused
int y_step_q4, // unused
int w, int h) {
const int16x8_t filters = vld1q_s16(filter_x);
uint8x8_t t0, t1, t2, t3;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(x_step_q4 == 16);
(void)x_step_q4;
(void)y_step_q4;
(void)filter_y;
src -= 3;
if (h == 4) {
uint8x8_t d01, d23;
int16x4_t filter3, filter4, s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0,
d1, d2, d3;
int16x8_t tt0, tt1, tt2, tt3;
uint32x4_t d0123 = vdupq_n_u32(0);
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
filter3 = vdup_lane_s16(vget_low_s16(filters), 3);
filter4 = vdup_lane_s16(vget_high_s16(filters), 0);
load_8x4(src, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
tt1 = vreinterpretq_s16_u16(vmovl_u8(t1));
tt2 = vreinterpretq_s16_u16(vmovl_u8(t2));
tt3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s0 = vget_low_s16(tt0);
s1 = vget_low_s16(tt1);
s2 = vget_low_s16(tt2);
s3 = vget_low_s16(tt3);
s4 = vget_high_s16(tt0);
s5 = vget_high_s16(tt1);
s6 = vget_high_s16(tt2);
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
src += 7;
do {
load_8x4(src, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
tt1 = vreinterpretq_s16_u16(vmovl_u8(t1));
tt2 = vreinterpretq_s16_u16(vmovl_u8(t2));
tt3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s7 = vget_low_s16(tt0);
s8 = vget_low_s16(tt1);
s9 = vget_low_s16(tt2);
s10 = vget_low_s16(tt3);
d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), 7);
d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), 7);
transpose_u8_4x4(&d01, &d23);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 0 * dst_stride), d0123, 0);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 1 * dst_stride), d0123, 2);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 2 * dst_stride), d0123, 1);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 3 * dst_stride), d0123, 3);
d0123 = vreinterpretq_u32_u8(
vrhaddq_u8(vreinterpretq_u8_u32(d0123), vcombine_u8(d01, d23)));
vst1q_lane_u32((uint32_t *)(dst + 0 * dst_stride), d0123, 0);
vst1q_lane_u32((uint32_t *)(dst + 1 * dst_stride), d0123, 2);
vst1q_lane_u32((uint32_t *)(dst + 2 * dst_stride), d0123, 1);
vst1q_lane_u32((uint32_t *)(dst + 3 * dst_stride), d0123, 3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
src += 4;
dst += 4;
w -= 4;
} while (w > 0);
} else {
const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
int width;
const uint8_t *s;
uint8x8_t t4, t5, t6, t7;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
if (w == 4) {
uint32x4_t d0415 = vdupq_n_u32(0);
uint32x4_t d2637 = vdupq_n_u32(0);
do {
load_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
load_8x8(src + 7, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
src += 8 * src_stride;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(dst + 4 * dst_stride);
__builtin_prefetch(dst + 5 * dst_stride);
__builtin_prefetch(dst + 6 * dst_stride);
__builtin_prefetch(dst + 7 * dst_stride);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
s9 = vreinterpretq_s16_u16(vmovl_u8(t2));
s10 = vreinterpretq_s16_u16(vmovl_u8(t3));
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
__builtin_prefetch(src + 7 * src_stride);
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
t0 = vqrshrun_n_s16(d0, 7);
t1 = vqrshrun_n_s16(d1, 7);
t2 = vqrshrun_n_s16(d2, 7);
t3 = vqrshrun_n_s16(d3, 7);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
d0415 = vld1q_lane_u32((uint32_t *)(dst + 0 * dst_stride), d0415, 0);
d0415 = vld1q_lane_u32((uint32_t *)(dst + 1 * dst_stride), d0415, 2);
d2637 = vld1q_lane_u32((uint32_t *)(dst + 2 * dst_stride), d2637, 0);
d2637 = vld1q_lane_u32((uint32_t *)(dst + 3 * dst_stride), d2637, 2);
d0415 = vld1q_lane_u32((uint32_t *)(dst + 4 * dst_stride), d0415, 1);
d0415 = vld1q_lane_u32((uint32_t *)(dst + 5 * dst_stride), d0415, 3);
d2637 = vld1q_lane_u32((uint32_t *)(dst + 6 * dst_stride), d2637, 1);
d2637 = vld1q_lane_u32((uint32_t *)(dst + 7 * dst_stride), d2637, 3);
d0415 = vreinterpretq_u32_u8(
vrhaddq_u8(vreinterpretq_u8_u32(d0415), vcombine_u8(t0, t1)));
d2637 = vreinterpretq_u32_u8(
vrhaddq_u8(vreinterpretq_u8_u32(d2637), vcombine_u8(t2, t3)));
vst1q_lane_u32((uint32_t *)dst, d0415, 0);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0415, 2);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d2637, 0);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d2637, 2);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0415, 1);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0415, 3);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d2637, 1);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d2637, 3);
dst += dst_stride;
h -= 8;
} while (h > 0);
} else {
uint8_t *d;
int16x8_t s11, s12, s13, s14, d4, d5, d6, d7;
uint8x16_t d01, d23, d45, d67;
do {
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
__builtin_prefetch(src + 7 * src_stride);
load_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
width = w;
s = src + 7;
d = dst;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(dst + 4 * dst_stride);
__builtin_prefetch(dst + 5 * dst_stride);
__builtin_prefetch(dst + 6 * dst_stride);
__builtin_prefetch(dst + 7 * dst_stride);
do {
load_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
s9 = vreinterpretq_s16_u16(vmovl_u8(t2));
s10 = vreinterpretq_s16_u16(vmovl_u8(t3));
s11 = vreinterpretq_s16_u16(vmovl_u8(t4));
s12 = vreinterpretq_s16_u16(vmovl_u8(t5));
s13 = vreinterpretq_s16_u16(vmovl_u8(t6));
s14 = vreinterpretq_s16_u16(vmovl_u8(t7));
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, filter3,
filter4);
d5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, filter3,
filter4);
d6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, filter3,
filter4);
d7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters,
filter3, filter4);
t0 = vqrshrun_n_s16(d0, 7);
t1 = vqrshrun_n_s16(d1, 7);
t2 = vqrshrun_n_s16(d2, 7);
t3 = vqrshrun_n_s16(d3, 7);
t4 = vqrshrun_n_s16(d4, 7);
t5 = vqrshrun_n_s16(d5, 7);
t6 = vqrshrun_n_s16(d6, 7);
t7 = vqrshrun_n_s16(d7, 7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
d01 = vcombine_u8(vld1_u8(d + 0 * dst_stride),
vld1_u8(d + 1 * dst_stride));
d23 = vcombine_u8(vld1_u8(d + 2 * dst_stride),
vld1_u8(d + 3 * dst_stride));
d45 = vcombine_u8(vld1_u8(d + 4 * dst_stride),
vld1_u8(d + 5 * dst_stride));
d67 = vcombine_u8(vld1_u8(d + 6 * dst_stride),
vld1_u8(d + 7 * dst_stride));
d01 = vrhaddq_u8(d01, vcombine_u8(t0, t1));
d23 = vrhaddq_u8(d23, vcombine_u8(t2, t3));
d45 = vrhaddq_u8(d45, vcombine_u8(t4, t5));
d67 = vrhaddq_u8(d67, vcombine_u8(t6, t7));
store_8x8(d, dst_stride, vget_low_u8(d01), vget_high_u8(d01),
vget_low_u8(d23), vget_high_u8(d23), vget_low_u8(d45),
vget_high_u8(d45), vget_low_u8(d67), vget_high_u8(d67));
s0 = s8;
s1 = s9;
s2 = s10;
s3 = s11;
s4 = s12;
s5 = s13;
s6 = s14;
s += 8;
d += 8;
width -= 8;
} while (width > 0);
src += 8 * src_stride;
dst += 8 * dst_stride;
h -= 8;
} while (h > 0);
}
}
}
void vpx_convolve8_vert_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const int16_t *filter_x, // unused
int x_step_q4, // unused
const int16_t *filter_y, int y_step_q4, int w,
int h) {
const int16x8_t filters = vld1q_s16(filter_y);
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x_step_q4;
(void)y_step_q4;
(void)filter_x;
src -= 3 * src_stride;
if (w == 4) {
const int16x4_t filter3 = vdup_lane_s16(vget_low_s16(filters), 3);
const int16x4_t filter4 = vdup_lane_s16(vget_high_s16(filters), 0);
uint8x8_t d01, d23;
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
do {
s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), 7);
d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), 7);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01), 1);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d23), 0);
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d23), 1);
dst += dst_stride;
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
h -= 4;
} while (h > 0);
} else {
const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
int height;
const uint8_t *s;
uint8_t *d;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
do {
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
s = src;
s0 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s1 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s2 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s3 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s4 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s6 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
d = dst;
height = h;
do {
s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s8 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s9 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s10 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
__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(s + 0 * src_stride);
__builtin_prefetch(s + 1 * src_stride);
__builtin_prefetch(s + 2 * src_stride);
__builtin_prefetch(s + 3 * src_stride);
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
vst1_u8(d, vqrshrun_n_s16(d0, 7));
d += dst_stride;
vst1_u8(d, vqrshrun_n_s16(d1, 7));
d += dst_stride;
vst1_u8(d, vqrshrun_n_s16(d2, 7));
d += dst_stride;
vst1_u8(d, vqrshrun_n_s16(d3, 7));
d += dst_stride;
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
height -= 4;
} while (height > 0);
src += 8;
dst += 8;
w -= 8;
} while (w > 0);
}
}
void vpx_convolve8_avg_vert_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const int16_t *filter_x, // unused
int x_step_q4, // unused
const int16_t *filter_y, int y_step_q4, int w,
int h) {
const int16x8_t filters = vld1q_s16(filter_y);
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x_step_q4;
(void)y_step_q4;
(void)filter_x;
src -= 3 * src_stride;
if (w == 4) {
const int16x4_t filter3 = vdup_lane_s16(vget_low_s16(filters), 3);
const int16x4_t filter4 = vdup_lane_s16(vget_high_s16(filters), 0);
uint8x8_t d01, d23;
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
uint32x4_t d0123 = vdupq_n_u32(0);
s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
do {
s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(vld1_u8(src))));
src += src_stride;
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(dst + 1 * dst_stride);
__builtin_prefetch(dst + 2 * dst_stride);
__builtin_prefetch(dst + 3 * dst_stride);
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
d0 = convolve8_4(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_4(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_4(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_4(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), 7);
d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), 7);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 0 * dst_stride), d0123, 0);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 1 * dst_stride), d0123, 1);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 2 * dst_stride), d0123, 2);
d0123 = vld1q_lane_u32((uint32_t *)(dst + 3 * dst_stride), d0123, 3);
d0123 = vreinterpretq_u32_u8(
vrhaddq_u8(vreinterpretq_u8_u32(d0123), vcombine_u8(d01, d23)));
vst1q_lane_u32((uint32_t *)dst, d0123, 0);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0123, 1);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0123, 2);
dst += dst_stride;
vst1q_lane_u32((uint32_t *)dst, d0123, 3);
dst += dst_stride;
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
h -= 4;
} while (h > 0);
} else {
const int16x8_t filter3 = vdupq_lane_s16(vget_low_s16(filters), 3);
const int16x8_t filter4 = vdupq_lane_s16(vget_high_s16(filters), 0);
int height;
const uint8_t *s;
uint8_t *d;
uint8x16_t d01, d23, dd01, dd23;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
do {
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
__builtin_prefetch(src + 4 * src_stride);
__builtin_prefetch(src + 5 * src_stride);
__builtin_prefetch(src + 6 * src_stride);
s = src;
s0 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s1 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s2 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s3 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s4 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s6 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
d = dst;
height = h;
do {
s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s8 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s9 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
s10 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
s += src_stride;
__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(s + 0 * src_stride);
__builtin_prefetch(s + 1 * src_stride);
__builtin_prefetch(s + 2 * src_stride);
__builtin_prefetch(s + 3 * src_stride);
d0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
d1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
d2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
d3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vcombine_u8(vqrshrun_n_s16(d0, 7), vqrshrun_n_s16(d1, 7));
d23 = vcombine_u8(vqrshrun_n_s16(d2, 7), vqrshrun_n_s16(d3, 7));
dd01 = vcombine_u8(vld1_u8(d + 0 * dst_stride),
vld1_u8(d + 1 * dst_stride));
dd23 = vcombine_u8(vld1_u8(d + 2 * dst_stride),
vld1_u8(d + 3 * dst_stride));
dd01 = vrhaddq_u8(dd01, d01);
dd23 = vrhaddq_u8(dd23, d23);
vst1_u8(d, vget_low_u8(dd01));
d += dst_stride;
vst1_u8(d, vget_high_u8(dd01));
d += dst_stride;
vst1_u8(d, vget_low_u8(dd23));
d += dst_stride;
vst1_u8(d, vget_high_u8(dd23));
d += dst_stride;
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
height -= 4;
} while (height > 0);
src += 8;
dst += 8;
w -= 8;
} while (w > 0);
}
}