ref: 5df4195b43e5b69572cdb1903d67d6f6c2917285
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/mem_neon.h"
#include "vpx_dsp/arm/transpose_neon.h"
#include "vpx_dsp/arm/vpx_convolve8_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%.
#if defined(__aarch64__) && defined(__ARM_FEATURE_DOTPROD) && \
(__ARM_FEATURE_DOTPROD == 1)
DECLARE_ALIGNED(16, static const uint8_t, dot_prod_permute_tbl[48]) = {
0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6,
4, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10,
8, 9, 10, 11, 9, 10, 11, 12, 10, 11, 12, 13, 11, 12, 13, 14
};
DECLARE_ALIGNED(16, static const uint8_t, dot_prod_tran_concat_tbl[32]) = {
0, 8, 16, 24, 1, 9, 17, 25, 2, 10, 18, 26, 3, 11, 19, 27,
4, 12, 20, 28, 5, 13, 21, 29, 6, 14, 22, 30, 7, 15, 23, 31
};
DECLARE_ALIGNED(16, static const uint8_t, dot_prod_merge_block_tbl[48]) = {
/* Shift left and insert new last column in transposed 4x4 block. */
1, 2, 3, 16, 5, 6, 7, 20, 9, 10, 11, 24, 13, 14, 15, 28,
/* Shift left and insert two new columns in transposed 4x4 block. */
2, 3, 16, 17, 6, 7, 20, 21, 10, 11, 24, 25, 14, 15, 28, 29,
/* Shift left and insert three new columns in transposed 4x4 block. */
3, 16, 17, 18, 7, 20, 21, 22, 11, 24, 25, 26, 15, 28, 29, 30
};
static INLINE void transpose_concat_4x4(int8x8_t *a0, int8x8_t *a1,
int8x8_t *a2, int8x8_t *a3,
int8x16_t *b,
const uint8x16_t permute_tbl) {
/* Transpose 8-bit elements and concatenate result rows as follows:
* a0: 00, 01, 02, 03, XX, XX, XX, XX
* a1: 10, 11, 12, 13, XX, XX, XX, XX
* a2: 20, 21, 22, 23, XX, XX, XX, XX
* a3: 30, 31, 32, 33, XX, XX, XX, XX
*
* b: 00, 10, 20, 30, 01, 11, 21, 31, 02, 12, 22, 32, 03, 13, 23, 33
*
* The 'permute_tbl' is always 'dot_prod_tran_concat_tbl' above. Passing it
* as an argument is preferable to loading it directly from memory as this
* inline helper is called many times from the same parent function.
*/
int8x16x2_t samples = { { vcombine_s8(*a0, *a1), vcombine_s8(*a2, *a3) } };
*b = vqtbl2q_s8(samples, permute_tbl);
}
static INLINE void transpose_concat_8x4(int8x8_t *a0, int8x8_t *a1,
int8x8_t *a2, int8x8_t *a3,
int8x16_t *b0, int8x16_t *b1,
const uint8x16x2_t permute_tbl) {
/* Transpose 8-bit elements and concatenate result rows as follows:
* a0: 00, 01, 02, 03, 04, 05, 06, 07
* a1: 10, 11, 12, 13, 14, 15, 16, 17
* a2: 20, 21, 22, 23, 24, 25, 26, 27
* a3: 30, 31, 32, 33, 34, 35, 36, 37
*
* b0: 00, 10, 20, 30, 01, 11, 21, 31, 02, 12, 22, 32, 03, 13, 23, 33
* b1: 04, 14, 24, 34, 05, 15, 25, 35, 06, 16, 26, 36, 07, 17, 27, 37
*
* The 'permute_tbl' is always 'dot_prod_tran_concat_tbl' above. Passing it
* as an argument is preferable to loading it directly from memory as this
* inline helper is called many times from the same parent function.
*/
int8x16x2_t samples = { { vcombine_s8(*a0, *a1), vcombine_s8(*a2, *a3) } };
*b0 = vqtbl2q_s8(samples, permute_tbl.val[0]);
*b1 = vqtbl2q_s8(samples, permute_tbl.val[1]);
}
void vpx_convolve8_horiz_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int8x8_t filters = vmovn_s16(vld1q_s16(filter[x0_q4]));
const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[x0_q4]), 128);
const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
const uint8x16_t range_limit = vdupq_n_u8(128);
uint8x16_t s0, s1, s2, s3;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(x_step_q4 == 16);
(void)x_step_q4;
(void)y0_q4;
(void)y_step_q4;
src -= 3;
if (w == 4) {
const uint8x16x2_t permute_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
do {
int32x4_t t0, t1, t2, t3;
int16x8_t t01, t23;
uint8x8_t d01, d23;
s0 = vld1q_u8(src);
src += src_stride;
s1 = vld1q_u8(src);
src += src_stride;
s2 = vld1q_u8(src);
src += src_stride;
s3 = vld1q_u8(src);
src += src_stride;
t0 = convolve8_4_dot(s0, filters, correction, range_limit, permute_tbl);
t1 = convolve8_4_dot(s1, filters, correction, range_limit, permute_tbl);
t2 = convolve8_4_dot(s2, filters, correction, range_limit, permute_tbl);
t3 = convolve8_4_dot(s3, filters, correction, range_limit, permute_tbl);
t01 = vcombine_s16(vqmovn_s32(t0), vqmovn_s32(t1));
t23 = vcombine_s16(vqmovn_s32(t2), vqmovn_s32(t3));
d01 = vqrshrun_n_s16(t01, 7);
d23 = vqrshrun_n_s16(t23, 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;
h -= 4;
} while (h > 0);
} else {
const uint8x16x3_t permute_tbl = vld1q_u8_x3(dot_prod_permute_tbl);
const uint8_t *s;
uint8_t *d;
int width;
uint8x8_t d0, d1, d2, d3;
do {
width = w;
s = src;
d = dst;
do {
s0 = vld1q_u8(s + 0 * src_stride);
s1 = vld1q_u8(s + 1 * src_stride);
s2 = vld1q_u8(s + 2 * src_stride);
s3 = vld1q_u8(s + 3 * src_stride);
d0 = convolve8_8_dot(s0, filters, correction, range_limit, permute_tbl);
d1 = convolve8_8_dot(s1, filters, correction, range_limit, permute_tbl);
d2 = convolve8_8_dot(s2, filters, correction, range_limit, permute_tbl);
d3 = convolve8_8_dot(s3, filters, correction, range_limit, permute_tbl);
vst1_u8(d + 0 * dst_stride, d0);
vst1_u8(d + 1 * dst_stride, d1);
vst1_u8(d + 2 * dst_stride, d2);
vst1_u8(d + 3 * dst_stride, d3);
s += 8;
d += 8;
width -= 8;
} while (width > 0);
src += 4 * src_stride;
dst += 4 * dst_stride;
h -= 4;
} 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 InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4,
int w, int h) {
const int8x8_t filters = vmovn_s16(vld1q_s16(filter[x0_q4]));
const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[x0_q4]), 128);
const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
const uint8x16_t range_limit = vdupq_n_u8(128);
uint8x16_t s0, s1, s2, s3;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(x_step_q4 == 16);
(void)x_step_q4;
(void)y0_q4;
(void)y_step_q4;
src -= 3;
if (w == 4) {
const uint8x16x2_t permute_tbl = vld1q_u8_x2(dot_prod_permute_tbl);
do {
int32x4_t t0, t1, t2, t3;
int16x8_t t01, t23;
uint8x8_t d01, d23, dd01, dd23;
dd01 = vdup_n_u8(0);
dd23 = vdup_n_u8(0);
s0 = vld1q_u8(src);
src += src_stride;
s1 = vld1q_u8(src);
src += src_stride;
s2 = vld1q_u8(src);
src += src_stride;
s3 = vld1q_u8(src);
src += src_stride;
t0 = convolve8_4_dot(s0, filters, correction, range_limit, permute_tbl);
t1 = convolve8_4_dot(s1, filters, correction, range_limit, permute_tbl);
t2 = convolve8_4_dot(s2, filters, correction, range_limit, permute_tbl);
t3 = convolve8_4_dot(s3, filters, correction, range_limit, permute_tbl);
t01 = vcombine_s16(vqmovn_s32(t0), vqmovn_s32(t1));
t23 = vcombine_s16(vqmovn_s32(t2), vqmovn_s32(t3));
d01 = vqrshrun_n_s16(t01, 7);
d23 = vqrshrun_n_s16(t23, 7);
dd01 = load_u8(dst + 0 * dst_stride, dst_stride);
dd23 = load_u8(dst + 2 * dst_stride, dst_stride);
d01 = vrhadd_u8(d01, dd01);
d23 = vrhadd_u8(d23, dd23);
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;
h -= 4;
} while (h > 0);
} else {
const uint8x16x3_t permute_tbl = vld1q_u8_x3(dot_prod_permute_tbl);
const uint8_t *s;
uint8_t *d;
int width;
uint8x8_t d0, d1, d2, d3, dd0, dd1, dd2, dd3;
do {
width = w;
s = src;
d = dst;
do {
s0 = vld1q_u8(s + 0 * src_stride);
s1 = vld1q_u8(s + 1 * src_stride);
s2 = vld1q_u8(s + 2 * src_stride);
s3 = vld1q_u8(s + 3 * src_stride);
d0 = convolve8_8_dot(s0, filters, correction, range_limit, permute_tbl);
d1 = convolve8_8_dot(s1, filters, correction, range_limit, permute_tbl);
d2 = convolve8_8_dot(s2, filters, correction, range_limit, permute_tbl);
d3 = convolve8_8_dot(s3, filters, correction, range_limit, permute_tbl);
dd0 = vld1_u8(d + 0 * dst_stride);
dd1 = vld1_u8(d + 1 * dst_stride);
dd2 = vld1_u8(d + 2 * dst_stride);
dd3 = vld1_u8(d + 3 * dst_stride);
d0 = vrhadd_u8(d0, dd0);
d1 = vrhadd_u8(d1, dd1);
d2 = vrhadd_u8(d2, dd2);
d3 = vrhadd_u8(d3, dd3);
vst1_u8(d + 0 * dst_stride, d0);
vst1_u8(d + 1 * dst_stride, d1);
vst1_u8(d + 2 * dst_stride, d2);
vst1_u8(d + 3 * dst_stride, d3);
s += 8;
d += 8;
width -= 8;
} while (width > 0);
src += 4 * src_stride;
dst += 4 * dst_stride;
h -= 4;
} while (h > 0);
}
}
void vpx_convolve8_vert_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int8x8_t filters = vmovn_s16(vld1q_s16(filter[y0_q4]));
const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[y0_q4]), 128);
const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
const uint8x8_t range_limit = vdup_n_u8(128);
const uint8x16x3_t merge_block_tbl = vld1q_u8_x3(dot_prod_merge_block_tbl);
uint8x8_t t0, t1, t2, t3, t4, t5, t6;
int8x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
int8x16x2_t samples_LUT;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x0_q4;
(void)x_step_q4;
(void)y_step_q4;
src -= 3 * src_stride;
if (w == 4) {
const uint8x16_t tran_concat_tbl = vld1q_u8(dot_prod_tran_concat_tbl);
int8x16_t s0123, s1234, s2345, s3456, s4567, s5678, s6789, s78910;
int32x4_t d0, d1, d2, d3;
uint8x8_t d01, d23;
load_u8_8x4(src, src_stride, &t0, &t1, &t2, &t3);
src += 4 * src_stride;
t4 = vld1_u8(src);
src += src_stride;
t5 = vld1_u8(src);
src += src_stride;
t6 = vld1_u8(src);
src += src_stride;
/* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
s7 = vdup_n_s8(0);
s8 = vdup_n_s8(0);
s9 = vdup_n_s8(0);
/* This operation combines a conventional transpose and the sample permute
* (see horizontal case) required before computing the dot product.
*/
transpose_concat_4x4(&s0, &s1, &s2, &s3, &s0123, tran_concat_tbl);
transpose_concat_4x4(&s1, &s2, &s3, &s4, &s1234, tran_concat_tbl);
transpose_concat_4x4(&s2, &s3, &s4, &s5, &s2345, tran_concat_tbl);
transpose_concat_4x4(&s3, &s4, &s5, &s6, &s3456, tran_concat_tbl);
transpose_concat_4x4(&s4, &s5, &s6, &s7, &s4567, tran_concat_tbl);
transpose_concat_4x4(&s5, &s6, &s7, &s8, &s5678, tran_concat_tbl);
transpose_concat_4x4(&s6, &s7, &s8, &s9, &s6789, tran_concat_tbl);
do {
uint8x8_t t7, t8, t9, t10;
load_u8_8x4(src, src_stride, &t7, &t8, &t9, &t10);
s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
transpose_concat_4x4(&s7, &s8, &s9, &s10, &s78910, tran_concat_tbl);
/* Merge new data into block from previous iteration. */
samples_LUT.val[0] = s3456;
samples_LUT.val[1] = s78910;
s4567 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
d0 = convolve8_4_dot_partial(s0123, s4567, correction, filters);
d1 = convolve8_4_dot_partial(s1234, s5678, correction, filters);
d2 = convolve8_4_dot_partial(s2345, s6789, correction, filters);
d3 = convolve8_4_dot_partial(s3456, s78910, correction, filters);
d01 = vqrshrun_n_s16(vcombine_s16(vqmovn_s32(d0), vqmovn_s32(d1)), 7);
d23 = vqrshrun_n_s16(vcombine_s16(vqmovn_s32(d2), vqmovn_s32(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;
/* Prepare block for next iteration - re-using as much as possible. */
/* Shuffle everything up four rows. */
s0123 = s4567;
s1234 = s5678;
s2345 = s6789;
s3456 = s78910;
src += 4 * src_stride;
h -= 4;
} while (h > 0);
} else {
const uint8x16x2_t tran_concat_tbl = vld1q_u8_x2(dot_prod_tran_concat_tbl);
int8x16_t s0123_lo, s0123_hi, s1234_lo, s1234_hi, s2345_lo, s2345_hi,
s3456_lo, s3456_hi, s4567_lo, s4567_hi, s5678_lo, s5678_hi, s6789_lo,
s6789_hi, s78910_lo, s78910_hi;
uint8x8_t d0, d1, d2, d3;
const uint8_t *s;
uint8_t *d;
int height;
do {
height = h;
s = src;
d = dst;
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
s += 4 * src_stride;
t4 = vld1_u8(s);
s += src_stride;
t5 = vld1_u8(s);
s += src_stride;
t6 = vld1_u8(s);
s += src_stride;
/* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
s7 = vdup_n_s8(0);
s8 = vdup_n_s8(0);
s9 = vdup_n_s8(0);
/* This operation combines a conventional transpose and the sample permute
* (see horizontal case) required before computing the dot product.
*/
transpose_concat_8x4(&s0, &s1, &s2, &s3, &s0123_lo, &s0123_hi,
tran_concat_tbl);
transpose_concat_8x4(&s1, &s2, &s3, &s4, &s1234_lo, &s1234_hi,
tran_concat_tbl);
transpose_concat_8x4(&s2, &s3, &s4, &s5, &s2345_lo, &s2345_hi,
tran_concat_tbl);
transpose_concat_8x4(&s3, &s4, &s5, &s6, &s3456_lo, &s3456_hi,
tran_concat_tbl);
transpose_concat_8x4(&s4, &s5, &s6, &s7, &s4567_lo, &s4567_hi,
tran_concat_tbl);
transpose_concat_8x4(&s5, &s6, &s7, &s8, &s5678_lo, &s5678_hi,
tran_concat_tbl);
transpose_concat_8x4(&s6, &s7, &s8, &s9, &s6789_lo, &s6789_hi,
tran_concat_tbl);
do {
uint8x8_t t7, t8, t9, t10;
load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
transpose_concat_8x4(&s7, &s8, &s9, &s10, &s78910_lo, &s78910_hi,
tran_concat_tbl);
/* Merge new data into block from previous iteration. */
samples_LUT.val[0] = s3456_lo;
samples_LUT.val[1] = s78910_lo;
s4567_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
samples_LUT.val[0] = s3456_hi;
samples_LUT.val[1] = s78910_hi;
s4567_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
d0 = convolve8_8_dot_partial(s0123_lo, s4567_lo, s0123_hi, s4567_hi,
correction, filters);
d1 = convolve8_8_dot_partial(s1234_lo, s5678_lo, s1234_hi, s5678_hi,
correction, filters);
d2 = convolve8_8_dot_partial(s2345_lo, s6789_lo, s2345_hi, s6789_hi,
correction, filters);
d3 = convolve8_8_dot_partial(s3456_lo, s78910_lo, s3456_hi, s78910_hi,
correction, filters);
vst1_u8(d + 0 * dst_stride, d0);
vst1_u8(d + 1 * dst_stride, d1);
vst1_u8(d + 2 * dst_stride, d2);
vst1_u8(d + 3 * dst_stride, d3);
/* Prepare block for next iteration - re-using as much as possible. */
/* Shuffle everything up four rows. */
s0123_lo = s4567_lo;
s0123_hi = s4567_hi;
s1234_lo = s5678_lo;
s1234_hi = s5678_hi;
s2345_lo = s6789_lo;
s2345_hi = s6789_hi;
s3456_lo = s78910_lo;
s3456_hi = s78910_hi;
s += 4 * src_stride;
d += 4 * dst_stride;
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 InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int8x8_t filters = vmovn_s16(vld1q_s16(filter[y0_q4]));
const int16x8_t correct_tmp = vmulq_n_s16(vld1q_s16(filter[y0_q4]), 128);
const int32x4_t correction = vdupq_n_s32((int32_t)vaddvq_s16(correct_tmp));
const uint8x8_t range_limit = vdup_n_u8(128);
const uint8x16x3_t merge_block_tbl = vld1q_u8_x3(dot_prod_merge_block_tbl);
uint8x8_t t0, t1, t2, t3, t4, t5, t6;
int8x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
int8x16x2_t samples_LUT;
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x0_q4;
(void)x_step_q4;
(void)y_step_q4;
src -= 3 * src_stride;
if (w == 4) {
const uint8x16_t tran_concat_tbl = vld1q_u8(dot_prod_tran_concat_tbl);
int8x16_t s0123, s1234, s2345, s3456, s4567, s5678, s6789, s78910;
int32x4_t d0, d1, d2, d3;
uint8x8_t d01, d23, dd01, dd23;
load_u8_8x4(src, src_stride, &t0, &t1, &t2, &t3);
src += 4 * src_stride;
t4 = vld1_u8(src);
src += src_stride;
t5 = vld1_u8(src);
src += src_stride;
t6 = vld1_u8(src);
src += src_stride;
/* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
s7 = vdup_n_s8(0);
s8 = vdup_n_s8(0);
s9 = vdup_n_s8(0);
/* This operation combines a conventional transpose and the sample permute
* (see horizontal case) required before computing the dot product.
*/
transpose_concat_4x4(&s0, &s1, &s2, &s3, &s0123, tran_concat_tbl);
transpose_concat_4x4(&s1, &s2, &s3, &s4, &s1234, tran_concat_tbl);
transpose_concat_4x4(&s2, &s3, &s4, &s5, &s2345, tran_concat_tbl);
transpose_concat_4x4(&s3, &s4, &s5, &s6, &s3456, tran_concat_tbl);
transpose_concat_4x4(&s4, &s5, &s6, &s7, &s4567, tran_concat_tbl);
transpose_concat_4x4(&s5, &s6, &s7, &s8, &s5678, tran_concat_tbl);
transpose_concat_4x4(&s6, &s7, &s8, &s9, &s6789, tran_concat_tbl);
do {
uint8x8_t t7, t8, t9, t10;
load_u8_8x4(src, src_stride, &t7, &t8, &t9, &t10);
s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
transpose_concat_4x4(&s7, &s8, &s9, &s10, &s78910, tran_concat_tbl);
/* Merge new data into block from previous iteration. */
samples_LUT.val[0] = s3456;
samples_LUT.val[1] = s78910;
s4567 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789 = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
d0 = convolve8_4_dot_partial(s0123, s4567, correction, filters);
d1 = convolve8_4_dot_partial(s1234, s5678, correction, filters);
d2 = convolve8_4_dot_partial(s2345, s6789, correction, filters);
d3 = convolve8_4_dot_partial(s3456, s78910, correction, filters);
d01 = vqrshrun_n_s16(vcombine_s16(vqmovn_s32(d0), vqmovn_s32(d1)), 7);
d23 = vqrshrun_n_s16(vcombine_s16(vqmovn_s32(d2), vqmovn_s32(d3)), 7);
dd01 = load_u8(dst + 0 * dst_stride, dst_stride);
dd23 = load_u8(dst + 2 * dst_stride, dst_stride);
d01 = vrhadd_u8(d01, dd01);
d23 = vrhadd_u8(d23, dd23);
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;
/* Prepare block for next iteration - re-using as much as possible. */
/* Shuffle everything up four rows. */
s0123 = s4567;
s1234 = s5678;
s2345 = s6789;
s3456 = s78910;
src += 4 * src_stride;
h -= 4;
} while (h > 0);
} else {
const uint8x16x2_t tran_concat_tbl = vld1q_u8_x2(dot_prod_tran_concat_tbl);
int8x16_t s0123_lo, s0123_hi, s1234_lo, s1234_hi, s2345_lo, s2345_hi,
s3456_lo, s3456_hi, s4567_lo, s4567_hi, s5678_lo, s5678_hi, s6789_lo,
s6789_hi, s78910_lo, s78910_hi;
uint8x8_t d0, d1, d2, d3, dd0, dd1, dd2, dd3;
const uint8_t *s;
uint8_t *d;
int height;
do {
height = h;
s = src;
d = dst;
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
s += 4 * src_stride;
t4 = vld1_u8(s);
s += src_stride;
t5 = vld1_u8(s);
s += src_stride;
t6 = vld1_u8(s);
s += src_stride;
/* Clamp sample range to [-128, 127] for 8-bit signed dot product. */
s0 = vreinterpret_s8_u8(vsub_u8(t0, range_limit));
s1 = vreinterpret_s8_u8(vsub_u8(t1, range_limit));
s2 = vreinterpret_s8_u8(vsub_u8(t2, range_limit));
s3 = vreinterpret_s8_u8(vsub_u8(t3, range_limit));
s4 = vreinterpret_s8_u8(vsub_u8(t4, range_limit));
s5 = vreinterpret_s8_u8(vsub_u8(t5, range_limit));
s6 = vreinterpret_s8_u8(vsub_u8(t6, range_limit));
s7 = vdup_n_s8(0);
s8 = vdup_n_s8(0);
s9 = vdup_n_s8(0);
/* This operation combines a conventional transpose and the sample permute
* (see horizontal case) required before computing the dot product.
*/
transpose_concat_8x4(&s0, &s1, &s2, &s3, &s0123_lo, &s0123_hi,
tran_concat_tbl);
transpose_concat_8x4(&s1, &s2, &s3, &s4, &s1234_lo, &s1234_hi,
tran_concat_tbl);
transpose_concat_8x4(&s2, &s3, &s4, &s5, &s2345_lo, &s2345_hi,
tran_concat_tbl);
transpose_concat_8x4(&s3, &s4, &s5, &s6, &s3456_lo, &s3456_hi,
tran_concat_tbl);
transpose_concat_8x4(&s4, &s5, &s6, &s7, &s4567_lo, &s4567_hi,
tran_concat_tbl);
transpose_concat_8x4(&s5, &s6, &s7, &s8, &s5678_lo, &s5678_hi,
tran_concat_tbl);
transpose_concat_8x4(&s6, &s7, &s8, &s9, &s6789_lo, &s6789_hi,
tran_concat_tbl);
do {
uint8x8_t t7, t8, t9, t10;
load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
s7 = vreinterpret_s8_u8(vsub_u8(t7, range_limit));
s8 = vreinterpret_s8_u8(vsub_u8(t8, range_limit));
s9 = vreinterpret_s8_u8(vsub_u8(t9, range_limit));
s10 = vreinterpret_s8_u8(vsub_u8(t10, range_limit));
transpose_concat_8x4(&s7, &s8, &s9, &s10, &s78910_lo, &s78910_hi,
tran_concat_tbl);
/* Merge new data into block from previous iteration. */
samples_LUT.val[0] = s3456_lo;
samples_LUT.val[1] = s78910_lo;
s4567_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789_lo = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
samples_LUT.val[0] = s3456_hi;
samples_LUT.val[1] = s78910_hi;
s4567_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[0]);
s5678_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[1]);
s6789_hi = vqtbl2q_s8(samples_LUT, merge_block_tbl.val[2]);
d0 = convolve8_8_dot_partial(s0123_lo, s4567_lo, s0123_hi, s4567_hi,
correction, filters);
d1 = convolve8_8_dot_partial(s1234_lo, s5678_lo, s1234_hi, s5678_hi,
correction, filters);
d2 = convolve8_8_dot_partial(s2345_lo, s6789_lo, s2345_hi, s6789_hi,
correction, filters);
d3 = convolve8_8_dot_partial(s3456_lo, s78910_lo, s3456_hi, s78910_hi,
correction, filters);
dd0 = vld1_u8(d + 0 * dst_stride);
dd1 = vld1_u8(d + 1 * dst_stride);
dd2 = vld1_u8(d + 2 * dst_stride);
dd3 = vld1_u8(d + 3 * dst_stride);
d0 = vrhadd_u8(d0, dd0);
d1 = vrhadd_u8(d1, dd1);
d2 = vrhadd_u8(d2, dd2);
d3 = vrhadd_u8(d3, dd3);
vst1_u8(d + 0 * dst_stride, d0);
vst1_u8(d + 1 * dst_stride, d1);
vst1_u8(d + 2 * dst_stride, d2);
vst1_u8(d + 3 * dst_stride, d3);
/* Prepare block for next iteration - re-using as much as possible. */
/* Shuffle everything up four rows. */
s0123_lo = s4567_lo;
s0123_hi = s4567_hi;
s1234_lo = s5678_lo;
s1234_hi = s5678_hi;
s2345_lo = s6789_lo;
s2345_hi = s6789_hi;
s3456_lo = s78910_lo;
s3456_hi = s78910_hi;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height > 0);
src += 8;
dst += 8;
w -= 8;
} while (w > 0);
}
}
#else
static INLINE void store_u8_8x8(uint8_t *s, const 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);
}
void vpx_convolve8_horiz_neon(const uint8_t *src, ptrdiff_t src_stride,
uint8_t *dst, ptrdiff_t dst_stride,
const InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int16x8_t filters = vld1q_s16(filter[x0_q4]);
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)y0_q4;
(void)y_step_q4;
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_u8_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_u8_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;
if (w == 4) {
do {
load_u8_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_u8_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_4x8(&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);
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
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;
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_u8_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_u8_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));
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
t4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, filter3,
filter4);
t5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, filter3,
filter4);
t6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, filter3,
filter4);
t7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters,
filter3, filter4);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
store_u8_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 InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4,
int w, int h) {
const int16x8_t filters = vld1q_s16(filter[x0_q4]);
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)y0_q4;
(void)y_step_q4;
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_u8_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_u8_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;
if (w == 4) {
uint32x4_t d0415 = vdupq_n_u32(0);
uint32x4_t d2637 = vdupq_n_u32(0);
do {
load_u8_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_u8_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_4x8(&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);
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
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;
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_u8_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_u8_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));
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
t4 = convolve8_8(s4, s5, s6, s7, s8, s9, s10, s11, filters, filter3,
filter4);
t5 = convolve8_8(s5, s6, s7, s8, s9, s10, s11, s12, filters, filter3,
filter4);
t6 = convolve8_8(s6, s7, s8, s9, s10, s11, s12, s13, filters, filter3,
filter4);
t7 = convolve8_8(s7, s8, s9, s10, s11, s12, s13, s14, filters,
filter3, filter4);
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_u8_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 InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int16x8_t filters = vld1q_s16(filter[y0_q4]);
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x0_q4;
(void)x_step_q4;
(void)y_step_q4;
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;
uint8x8_t t0, t1, t2, t3;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
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);
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
vst1_u8(d, t0);
d += dst_stride;
vst1_u8(d, t1);
d += dst_stride;
vst1_u8(d, t2);
d += dst_stride;
vst1_u8(d, t3);
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 InterpKernel *filter, int x0_q4,
int x_step_q4, int y0_q4, int y_step_q4, int w,
int h) {
const int16x8_t filters = vld1q_s16(filter[y0_q4]);
assert(!((intptr_t)dst & 3));
assert(!(dst_stride & 3));
assert(y_step_q4 == 16);
(void)x0_q4;
(void)x_step_q4;
(void)y_step_q4;
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;
uint8x8_t t0, t1, t2, t3;
uint8x16_t d01, d23, dd01, dd23;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
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);
t0 = convolve8_8(s0, s1, s2, s3, s4, s5, s6, s7, filters, filter3,
filter4);
t1 = convolve8_8(s1, s2, s3, s4, s5, s6, s7, s8, filters, filter3,
filter4);
t2 = convolve8_8(s2, s3, s4, s5, s6, s7, s8, s9, filters, filter3,
filter4);
t3 = convolve8_8(s3, s4, s5, s6, s7, s8, s9, s10, filters, filter3,
filter4);
d01 = vcombine_u8(t0, t1);
d23 = vcombine_u8(t2, t3);
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);
}
}
#endif