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aomedia / aom / refs/heads/m69-3497 / . / av1 / common / arm / wiener_convolve_neon.c
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/*
* Copyright (c) 2018, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <arm_neon.h>
#include <assert.h>
#include "config/aom_config.h"
#include "config/av1_rtcd.h"
#include "aom_dsp/txfm_common.h"
#include "aom_ports/mem.h"
#include "av1/common/common.h"
#include "av1/common/arm/convolve_neon.h"
#include "av1/common/arm/mem_neon.h"
#include "av1/common/arm/transpose_neon.h"
/* Wiener filter 2D
Apply horizontal filter and store in a temporary buffer. When applying
vertical filter, overwrite the original pixel values.
*/
void av1_wiener_convolve_add_src_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, int y_step_q4,
int w, int h,
const ConvolveParams *conv_params) {
uint16_t *d_tmp;
uint8_t *d;
const uint8_t *src_ptr, *s_tmp;
uint16_t *dst_ptr;
(void)x_step_q4;
(void)y_step_q4;
int width, height;
const int bd = 8;
const int intermediate_height = h + SUBPEL_TAPS - 1;
const int center_tap = ((SUBPEL_TAPS - 1) / 2);
int16_t filter_x_tmp[7], filter_y_tmp[7];
DECLARE_ALIGNED(16, uint16_t,
temp[(MAX_SB_SIZE + HORIZ_EXTRA_ROWS) * MAX_SB_SIZE]);
assert(x_step_q4 == 16 && y_step_q4 == 16);
assert(!(w % 8));
assert(w <= MAX_SB_SIZE);
assert(h <= MAX_SB_SIZE);
assert(filter_x[7] == 0);
assert(filter_y[7] == 0);
/* assumption of horizontal filtering output will not exceed 15 bit.
((bd) + 1 + FILTER_BITS - conv_params->round_0) <= 15
16 - conv_params->round_0 <= 15 -- (conv_params->round_0) >= 1
*/
assert((conv_params->round_0) >= 1);
memcpy(&filter_x_tmp[0], filter_x, sizeof(*filter_x) * FILTER_BITS);
memcpy(&filter_y_tmp[0], filter_y, sizeof(*filter_y) * FILTER_BITS);
filter_x_tmp[3] += (1 << FILTER_BITS);
filter_y_tmp[3] += (1 << FILTER_BITS);
s_tmp = src - center_tap * src_stride - center_tap;
dst_ptr = temp;
src_ptr = s_tmp;
height = intermediate_height;
/* if height is a multiple of 8 */
if (!(h & 7)) {
int16x8_t res0, res1, res2, res3;
uint16x8_t res4, res5, res6, res7, res8, res9, res10, res11;
uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7;
uint8x8_t t8, t9, t10, t11, t12, t13, t14;
do {
const uint8_t *s;
__builtin_prefetch(src_ptr + 0 * src_stride);
__builtin_prefetch(src_ptr + 1 * src_stride);
__builtin_prefetch(src_ptr + 2 * src_stride);
__builtin_prefetch(src_ptr + 3 * src_stride);
__builtin_prefetch(src_ptr + 4 * src_stride);
__builtin_prefetch(src_ptr + 5 * src_stride);
__builtin_prefetch(src_ptr + 6 * src_stride);
__builtin_prefetch(src_ptr + 7 * src_stride);
load_u8_8x8(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
s = src_ptr + 7;
d_tmp = dst_ptr;
width = w;
__builtin_prefetch(dst_ptr + 0 * dst_stride);
__builtin_prefetch(dst_ptr + 1 * dst_stride);
__builtin_prefetch(dst_ptr + 2 * dst_stride);
__builtin_prefetch(dst_ptr + 3 * dst_stride);
__builtin_prefetch(dst_ptr + 4 * dst_stride);
__builtin_prefetch(dst_ptr + 5 * dst_stride);
__builtin_prefetch(dst_ptr + 6 * dst_stride);
__builtin_prefetch(dst_ptr + 7 * dst_stride);
do {
load_u8_8x8(s, src_stride, &t7, &t8, &t9, &t10, &t11, &t12, &t13, &t14);
transpose_u8_8x8(&t7, &t8, &t9, &t10, &t11, &t12, &t13, &t14);
res0 = vreinterpretq_s16_u16(vaddl_u8(t0, t6));
res1 = vreinterpretq_s16_u16(vaddl_u8(t1, t5));
res2 = vreinterpretq_s16_u16(vaddl_u8(t2, t4));
res3 = vreinterpretq_s16_u16(vmovl_u8(t3));
res4 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t1, t7));
res1 = vreinterpretq_s16_u16(vaddl_u8(t2, t6));
res2 = vreinterpretq_s16_u16(vaddl_u8(t3, t5));
res3 = vreinterpretq_s16_u16(vmovl_u8(t4));
res5 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t2, t8));
res1 = vreinterpretq_s16_u16(vaddl_u8(t3, t7));
res2 = vreinterpretq_s16_u16(vaddl_u8(t4, t6));
res3 = vreinterpretq_s16_u16(vmovl_u8(t5));
res6 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t3, t9));
res1 = vreinterpretq_s16_u16(vaddl_u8(t4, t8));
res2 = vreinterpretq_s16_u16(vaddl_u8(t5, t7));
res3 = vreinterpretq_s16_u16(vmovl_u8(t6));
res7 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t4, t10));
res1 = vreinterpretq_s16_u16(vaddl_u8(t5, t9));
res2 = vreinterpretq_s16_u16(vaddl_u8(t6, t8));
res3 = vreinterpretq_s16_u16(vmovl_u8(t7));
res8 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t5, t11));
res1 = vreinterpretq_s16_u16(vaddl_u8(t6, t10));
res2 = vreinterpretq_s16_u16(vaddl_u8(t7, t9));
res3 = vreinterpretq_s16_u16(vmovl_u8(t8));
res9 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t6, t12));
res1 = vreinterpretq_s16_u16(vaddl_u8(t7, t11));
res2 = vreinterpretq_s16_u16(vaddl_u8(t8, t10));
res3 = vreinterpretq_s16_u16(vmovl_u8(t9));
res10 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
res0 = vreinterpretq_s16_u16(vaddl_u8(t7, t13));
res1 = vreinterpretq_s16_u16(vaddl_u8(t8, t12));
res2 = vreinterpretq_s16_u16(vaddl_u8(t9, t11));
res3 = vreinterpretq_s16_u16(vmovl_u8(t10));
res11 = wiener_convolve8_horiz_8x8(res0, res1, res2, res3, filter_x_tmp,
bd, conv_params->round_0);
transpose_u16_8x8(&res4, &res5, &res6, &res7, &res8, &res9, &res10,
&res11);
store_u16_8x8(d_tmp, MAX_SB_SIZE, res4, res5, res6, res7, res8, res9,
res10, res11);
t0 = t8;
t1 = t9;
t2 = t10;
t3 = t11;
t4 = t12;
t5 = t13;
t6 = t14;
s += 8;
d_tmp += 8;
width -= 8;
} while (width > 0);
src_ptr += 8 * src_stride;
dst_ptr += 8 * MAX_SB_SIZE;
height -= 8;
} while (height > 0);
} else {
/*if height is a multiple of 4*/
int16x8_t tt0, tt1, tt2, tt3;
const uint8_t *s;
uint16x4_t res0, res1, res2, res3, res4, res5, res6, res7;
uint16x8_t d0, d1, d2, d3;
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
int16x4_t s11, s12, s13, s14;
uint8x8_t t0, t1, t2, t3;
do {
__builtin_prefetch(src_ptr + 0 * src_stride);
__builtin_prefetch(src_ptr + 1 * src_stride);
__builtin_prefetch(src_ptr + 2 * src_stride);
__builtin_prefetch(src_ptr + 3 * src_stride);
load_u8_8x4(src_ptr, src_stride, &t0, &t1, &t2, &t3); /*8x4*/
transpose_u8_8x4(&t0, &t1, &t2,
&t3); /*first 8 pixels of 4 rows transposed-- 4x8*/
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); /*pa0 pb0 pc0 pd0 -- pixel_a0*/
s1 = vget_low_s16(tt1); /*pa1 pb1 pc1 pd1 */
s2 = vget_low_s16(tt2); /*pa2 pb2 pc2 pd2 */
s3 = vget_low_s16(tt3); /*pa3 pb3 pc3 pd3 */
s4 = vget_high_s16(tt0); /*pa4 pb4 pc4 pd4 */
s5 = vget_high_s16(tt1); /*pa5 pb5 pc5 pd5 */
s6 = vget_high_s16(tt2); /*pa6 pb6 pc6 pd6 */
__builtin_prefetch(dst_ptr + 0 * dst_stride);
__builtin_prefetch(dst_ptr + 1 * dst_stride);
__builtin_prefetch(dst_ptr + 2 * dst_stride);
__builtin_prefetch(dst_ptr + 3 * dst_stride);
s = src_ptr + 7;
d_tmp = dst_ptr;
width = w;
do {
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3); /*8x4*/
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); /*pa7 pb7 pc7 pd7 */ /*4x8*/
s8 = vget_low_s16(tt1); /*pa8 pb8 pc8 pd8 */
s9 = vget_low_s16(tt2); /*pa9 pb9 pc9 pd9 */
s10 = vget_low_s16(tt3); /*pa10 pb10 pc10 pd10 */
s11 = vget_high_s16(tt0); /*pa11 pb11 pc11 pd11 */
s12 = vget_high_s16(tt1); /*pa12 pb12 pc12 pd12 */
s13 = vget_high_s16(tt2); /*pa13 pb13 pc13 pd13 */
s14 = vget_high_s16(tt3); /*pa14 pb14 pc14 pd14 */
res0 = wiener_convolve8_horiz_4x8(
s0, s1, s2, s3, s4, s5, s6, filter_x_tmp, bd, conv_params->round_0);
res1 = wiener_convolve8_horiz_4x8(
s1, s2, s3, s4, s5, s6, s7, filter_x_tmp, bd, conv_params->round_0);
res2 = wiener_convolve8_horiz_4x8(
s2, s3, s4, s5, s6, s7, s8, filter_x_tmp, bd, conv_params->round_0);
res3 = wiener_convolve8_horiz_4x8(
s3, s4, s5, s6, s7, s8, s9, filter_x_tmp, bd, conv_params->round_0);
res4 =
wiener_convolve8_horiz_4x8(s4, s5, s6, s7, s8, s9, s10,
filter_x_tmp, bd, conv_params->round_0);
res5 =
wiener_convolve8_horiz_4x8(s5, s6, s7, s8, s9, s10, s11,
filter_x_tmp, bd, conv_params->round_0);
res6 =
wiener_convolve8_horiz_4x8(s6, s7, s8, s9, s10, s11, s12,
filter_x_tmp, bd, conv_params->round_0);
res7 =
wiener_convolve8_horiz_4x8(s7, s8, s9, s10, s11, s12, s13,
filter_x_tmp, bd, conv_params->round_0);
transpose_u16_4x8(&res0, &res1, &res2, &res3, &res4, &res5, &res6,
&res7, &d0, &d1, &d2, &d3);
store_u16_8x4(d_tmp, MAX_SB_SIZE, d0, d1, d2, d3);
s0 = s8;
s1 = s9;
s2 = s10;
s3 = s11;
s4 = s12;
s5 = s13;
s6 = s14;
s += 8;
d_tmp += 8;
width -= 8;
} while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * MAX_SB_SIZE;
height -= 4;
} while (height > 0);
}
{
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10;
uint8x8_t t0, t1, t2, t3;
int16_t *src_tmp_ptr, *s;
uint8_t *dst_tmp_ptr;
height = h;
width = w;
src_tmp_ptr = (int16_t *)temp;
dst_tmp_ptr = dst;
src_stride = MAX_SB_SIZE;
do {
s = src_tmp_ptr;
s0 = vld1q_s16(s);
s += src_stride;
s1 = vld1q_s16(s);
s += src_stride;
s2 = vld1q_s16(s);
s += src_stride;
s3 = vld1q_s16(s);
s += src_stride;
s4 = vld1q_s16(s);
s += src_stride;
s5 = vld1q_s16(s);
s += src_stride;
s6 = vld1q_s16(s);
s += src_stride;
d = dst_tmp_ptr;
height = h;
do {
__builtin_prefetch(dst_tmp_ptr + 0 * dst_stride);
__builtin_prefetch(dst_tmp_ptr + 1 * dst_stride);
__builtin_prefetch(dst_tmp_ptr + 2 * dst_stride);
__builtin_prefetch(dst_tmp_ptr + 3 * dst_stride);
s7 = vld1q_s16(s);
s += src_stride;
s8 = vld1q_s16(s);
s += src_stride;
s9 = vld1q_s16(s);
s += src_stride;
s10 = vld1q_s16(s);
s += src_stride;
t0 = wiener_convolve8_vert_4x8(s0, s1, s2, s3, s4, s5, s6, filter_y_tmp,
bd, conv_params->round_1);
t1 = wiener_convolve8_vert_4x8(s1, s2, s3, s4, s5, s6, s7, filter_y_tmp,
bd, conv_params->round_1);
t2 = wiener_convolve8_vert_4x8(s2, s3, s4, s5, s6, s7, s8, filter_y_tmp,
bd, conv_params->round_1);
t3 = wiener_convolve8_vert_4x8(s3, s4, s5, s6, s7, s8, s9, filter_y_tmp,
bd, conv_params->round_1);
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 > 3);
if (height != 0) {
__builtin_prefetch(dst_tmp_ptr + 0 * dst_stride);
__builtin_prefetch(dst_tmp_ptr + 1 * dst_stride);
do {
s7 = vld1q_s16(s);
s += src_stride;
t0 =
wiener_convolve8_vert_4x8(s0, s1, s2, s3, s4, s5, s6,
filter_y_tmp, bd, conv_params->round_1);
vst1_u8(d, t0);
d += dst_stride;
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
height -= 1;
} while (height > 0);
}
src_tmp_ptr += 8;
dst_tmp_ptr += 8;
w -= 8;
} while (w > 0);
}
}