blob: f0e4bedccb909f3185286f249a6d14a4bbd749a6 [file] [log] [blame]
/*
*
* 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 <assert.h>
#include <arm_neon.h>
#include "config/av1_rtcd.h"
#include "aom_dsp/aom_dsp_common.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#include "aom_ports/mem.h"
#include "av1/common/convolve.h"
#include "av1/common/filter.h"
#include "av1/common/arm/convolve_neon.h"
static INLINE int16x4_t convolve8_4x4(const int16x4_t s0, const int16x4_t s1,
const int16x4_t s2, const int16x4_t s3,
const int16x4_t s4, const int16x4_t s5,
const int16x4_t s6, const int16x4_t s7,
const int16_t *filter) {
int16x4_t sum;
sum = vmul_n_s16(s0, filter[0]);
sum = vmla_n_s16(sum, s1, filter[1]);
sum = vmla_n_s16(sum, s2, filter[2]);
sum = vmla_n_s16(sum, s5, filter[5]);
sum = vmla_n_s16(sum, s6, filter[6]);
sum = vmla_n_s16(sum, s7, filter[7]);
/* filter[3] can take a max value of 128. So the max value of the result :
* 128*255 + sum > 16 bits
*/
sum = vqadd_s16(sum, vmul_n_s16(s3, filter[3]));
sum = vqadd_s16(sum, vmul_n_s16(s4, filter[4]));
return sum;
}
static INLINE uint8x8_t convolve8_horiz_8x8(
const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
const int16x8_t s6, const int16x8_t s7, const int16_t *filter,
const int16x8_t shift_round_0, const int16x8_t shift_by_bits) {
int16x8_t sum;
sum = vmulq_n_s16(s0, filter[0]);
sum = vmlaq_n_s16(sum, s1, filter[1]);
sum = vmlaq_n_s16(sum, s2, filter[2]);
sum = vmlaq_n_s16(sum, s5, filter[5]);
sum = vmlaq_n_s16(sum, s6, filter[6]);
sum = vmlaq_n_s16(sum, s7, filter[7]);
/* filter[3] can take a max value of 128. So the max value of the result :
* 128*255 + sum > 16 bits
*/
sum = vqaddq_s16(sum, vmulq_n_s16(s3, filter[3]));
sum = vqaddq_s16(sum, vmulq_n_s16(s4, filter[4]));
sum = vqrshlq_s16(sum, shift_round_0);
sum = vqrshlq_s16(sum, shift_by_bits);
return vqmovun_s16(sum);
}
#if !defined(__aarch64__)
static INLINE uint8x8_t convolve8_horiz_4x1(
const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
const int16x4_t s6, const int16x4_t s7, const int16_t *filter,
const int16x4_t shift_round_0, const int16x4_t shift_by_bits) {
int16x4_t sum;
sum = vmul_n_s16(s0, filter[0]);
sum = vmla_n_s16(sum, s1, filter[1]);
sum = vmla_n_s16(sum, s2, filter[2]);
sum = vmla_n_s16(sum, s5, filter[5]);
sum = vmla_n_s16(sum, s6, filter[6]);
sum = vmla_n_s16(sum, s7, filter[7]);
/* filter[3] can take a max value of 128. So the max value of the result :
* 128*255 + sum > 16 bits
*/
sum = vqadd_s16(sum, vmul_n_s16(s3, filter[3]));
sum = vqadd_s16(sum, vmul_n_s16(s4, filter[4]));
sum = vqrshl_s16(sum, shift_round_0);
sum = vqrshl_s16(sum, shift_by_bits);
return vqmovun_s16(vcombine_s16(sum, sum));
}
#endif // !defined(__arch64__)
static INLINE uint8x8_t convolve8_vert_8x4(
const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
const int16x8_t s6, const int16x8_t s7, const int16_t *filter) {
int16x8_t sum;
sum = vmulq_n_s16(s0, filter[0]);
sum = vmlaq_n_s16(sum, s1, filter[1]);
sum = vmlaq_n_s16(sum, s2, filter[2]);
sum = vmlaq_n_s16(sum, s5, filter[5]);
sum = vmlaq_n_s16(sum, s6, filter[6]);
sum = vmlaq_n_s16(sum, s7, filter[7]);
/* filter[3] can take a max value of 128. So the max value of the result :
* 128*255 + sum > 16 bits
*/
sum = vqaddq_s16(sum, vmulq_n_s16(s3, filter[3]));
sum = vqaddq_s16(sum, vmulq_n_s16(s4, filter[4]));
return vqrshrun_n_s16(sum, FILTER_BITS);
}
static INLINE uint16x4_t convolve8_vert_4x4_s32(
const int16x4_t s0, const int16x4_t s1, const int16x4_t s2,
const int16x4_t s3, const int16x4_t s4, const int16x4_t s5,
const int16x4_t s6, const int16x4_t s7, const int16_t *y_filter,
const int32x4_t round_shift_vec, const int32x4_t offset_const,
const int32x4_t sub_const_vec) {
int32x4_t sum0;
uint16x4_t res;
const int32x4_t zero = vdupq_n_s32(0);
sum0 = vmull_n_s16(s0, y_filter[0]);
sum0 = vmlal_n_s16(sum0, s1, y_filter[1]);
sum0 = vmlal_n_s16(sum0, s2, y_filter[2]);
sum0 = vmlal_n_s16(sum0, s3, y_filter[3]);
sum0 = vmlal_n_s16(sum0, s4, y_filter[4]);
sum0 = vmlal_n_s16(sum0, s5, y_filter[5]);
sum0 = vmlal_n_s16(sum0, s6, y_filter[6]);
sum0 = vmlal_n_s16(sum0, s7, y_filter[7]);
sum0 = vaddq_s32(sum0, offset_const);
sum0 = vqrshlq_s32(sum0, round_shift_vec);
sum0 = vsubq_s32(sum0, sub_const_vec);
sum0 = vmaxq_s32(sum0, zero);
res = vmovn_u32(vreinterpretq_u32_s32(sum0));
return res;
}
static INLINE uint8x8_t convolve8_vert_8x4_s32(
const int16x8_t s0, const int16x8_t s1, const int16x8_t s2,
const int16x8_t s3, const int16x8_t s4, const int16x8_t s5,
const int16x8_t s6, const int16x8_t s7, const int16_t *y_filter,
const int32x4_t round_shift_vec, const int32x4_t offset_const,
const int32x4_t sub_const_vec, const int16x8_t vec_round_bits) {
int32x4_t sum0, sum1;
uint16x8_t res;
const int32x4_t zero = vdupq_n_s32(0);
sum0 = vmull_n_s16(vget_low_s16(s0), y_filter[0]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s1), y_filter[1]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s2), y_filter[2]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s3), y_filter[3]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s4), y_filter[4]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s5), y_filter[5]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s6), y_filter[6]);
sum0 = vmlal_n_s16(sum0, vget_low_s16(s7), y_filter[7]);
sum1 = vmull_n_s16(vget_high_s16(s0), y_filter[0]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s1), y_filter[1]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s2), y_filter[2]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s3), y_filter[3]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s4), y_filter[4]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s5), y_filter[5]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s6), y_filter[6]);
sum1 = vmlal_n_s16(sum1, vget_high_s16(s7), y_filter[7]);
sum0 = vaddq_s32(sum0, offset_const);
sum1 = vaddq_s32(sum1, offset_const);
sum0 = vqrshlq_s32(sum0, round_shift_vec);
sum1 = vqrshlq_s32(sum1, round_shift_vec);
sum0 = vsubq_s32(sum0, sub_const_vec);
sum1 = vsubq_s32(sum1, sub_const_vec);
sum0 = vmaxq_s32(sum0, zero);
sum1 = vmaxq_s32(sum1, zero);
res = vcombine_u16(vqmovn_u32(vreinterpretq_u32_s32(sum0)),
vqmovn_u32(vreinterpretq_u32_s32(sum1)));
res = vqrshlq_u16(res, vec_round_bits);
return vqmovn_u16(res);
}
void av1_convolve_x_sr_neon(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
const InterpFilterParams *filter_params_x,
const int subpel_x_qn,
ConvolveParams *conv_params) {
if (filter_params_x->taps > 8) {
av1_convolve_x_sr_c(src, src_stride, dst, dst_stride, w, h, filter_params_x,
subpel_x_qn, conv_params);
return;
}
const uint8_t horiz_offset = filter_params_x->taps / 2 - 1;
const int8_t bits = FILTER_BITS - conv_params->round_0;
uint8x8_t t0;
#if defined(__aarch64__)
uint8x8_t t1, t2, t3;
#endif
assert(bits >= 0);
assert((FILTER_BITS - conv_params->round_1) >= 0 ||
((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS));
const int16_t *x_filter = av1_get_interp_filter_subpel_kernel(
filter_params_x, subpel_x_qn & SUBPEL_MASK);
const int16x8_t shift_round_0 = vdupq_n_s16(-conv_params->round_0);
const int16x8_t shift_by_bits = vdupq_n_s16(-bits);
src -= horiz_offset;
#if defined(__aarch64__)
if (h == 4) {
uint8x8_t d01, d23;
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
int16x8_t d01_temp, d23_temp;
__builtin_prefetch(src + 0 * src_stride);
__builtin_prefetch(src + 1 * src_stride);
__builtin_prefetch(src + 2 * src_stride);
__builtin_prefetch(src + 3 * src_stride);
load_u8_8x4(src, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s5 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s6 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
__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);
s7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
d0 = convolve8_4x4(s0, s1, s2, s3, s4, s5, s6, s7, x_filter);
d1 = convolve8_4x4(s1, s2, s3, s4, s5, s6, s7, s8, x_filter);
d2 = convolve8_4x4(s2, s3, s4, s5, s6, s7, s8, s9, x_filter);
d3 = convolve8_4x4(s3, s4, s5, s6, s7, s8, s9, s10, x_filter);
d01_temp = vqrshlq_s16(vcombine_s16(d0, d1), shift_round_0);
d23_temp = vqrshlq_s16(vcombine_s16(d2, d3), shift_round_0);
d01_temp = vqrshlq_s16(d01_temp, shift_by_bits);
d23_temp = vqrshlq_s16(d23_temp, shift_by_bits);
d01 = vqmovun_s16(d01_temp);
d23 = vqmovun_s16(d23_temp);
transpose_u8_4x4(&d01, &d23);
if (w != 2) {
vst1_lane_u32((uint32_t *)(dst + 0 * dst_stride), // 00 01 02 03
vreinterpret_u32_u8(d01), 0);
vst1_lane_u32((uint32_t *)(dst + 1 * dst_stride), // 10 11 12 13
vreinterpret_u32_u8(d23), 0);
vst1_lane_u32((uint32_t *)(dst + 2 * dst_stride), // 20 21 22 23
vreinterpret_u32_u8(d01), 1);
vst1_lane_u32((uint32_t *)(dst + 3 * dst_stride), // 30 31 32 33
vreinterpret_u32_u8(d23), 1);
} else {
vst1_lane_u16((uint16_t *)(dst + 0 * dst_stride), // 00 01
vreinterpret_u16_u8(d01), 0);
vst1_lane_u16((uint16_t *)(dst + 1 * dst_stride), // 10 11
vreinterpret_u16_u8(d23), 0);
vst1_lane_u16((uint16_t *)(dst + 2 * dst_stride), // 20 21
vreinterpret_u16_u8(d01), 2);
vst1_lane_u16((uint16_t *)(dst + 3 * dst_stride), // 30 31
vreinterpret_u16_u8(d23), 2);
}
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
src += 4;
dst += 4;
w -= 4;
} while (w > 0);
} else {
#endif
int width;
const uint8_t *s;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
#if defined(__aarch64__)
int16x8_t s8, s9, s10;
uint8x8_t t4, t5, t6, t7;
#endif
if (w <= 4) {
#if defined(__aarch64__)
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_horiz_8x8(s0, s1, s2, s3, s4, s5, s6, s7, x_filter,
shift_round_0, shift_by_bits);
t1 = convolve8_horiz_8x8(s1, s2, s3, s4, s5, s6, s7, s8, x_filter,
shift_round_0, shift_by_bits);
t2 = convolve8_horiz_8x8(s2, s3, s4, s5, s6, s7, s8, s9, x_filter,
shift_round_0, shift_by_bits);
t3 = convolve8_horiz_8x8(s3, s4, s5, s6, s7, s8, s9, s10, x_filter,
shift_round_0, shift_by_bits);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
if ((w == 4) && (h > 4)) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0),
0); // 00 01 02 03
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t1),
0); // 10 11 12 13
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t2),
0); // 20 21 22 23
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t3),
0); // 30 31 32 33
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0),
1); // 40 41 42 43
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t1),
1); // 50 51 52 53
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t2),
1); // 60 61 62 63
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t3),
1); // 70 71 72 73
dst += dst_stride;
} else if ((w == 4) && (h == 2)) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0),
0); // 00 01 02 03
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t1),
0); // 10 11 12 13
dst += dst_stride;
} else if ((w == 2) && (h > 4)) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t0),
0); // 00 01
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t1),
0); // 10 11
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t2),
0); // 20 21
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t3),
0); // 30 31
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t0),
2); // 40 41
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t1),
2); // 50 51
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t2),
2); // 60 61
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t3),
2); // 70 71
dst += dst_stride;
} else if ((w == 2) && (h == 2)) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t0),
0); // 00 01
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t1),
0); // 10 11
dst += dst_stride;
}
h -= 8;
} while (h > 0);
#else
int16x8_t tt0;
int16x4_t x0, x1, x2, x3, x4, x5, x6, x7;
const int16x4_t shift_round_0_low = vget_low_s16(shift_round_0);
const int16x4_t shift_by_bits_low = vget_low_s16(shift_by_bits);
do {
t0 = vld1_u8(src); // a0 a1 a2 a3 a4 a5 a6 a7
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
x0 = vget_low_s16(tt0); // a0 a1 a2 a3
x4 = vget_high_s16(tt0); // a4 a5 a6 a7
t0 = vld1_u8(src + 8); // a8 a9 a10 a11 a12 a13 a14 a15
tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
x7 = vget_low_s16(tt0); // a8 a9 a10 a11
x1 = vext_s16(x0, x4, 1); // a1 a2 a3 a4
x2 = vext_s16(x0, x4, 2); // a2 a3 a4 a5
x3 = vext_s16(x0, x4, 3); // a3 a4 a5 a6
x5 = vext_s16(x4, x7, 1); // a5 a6 a7 a8
x6 = vext_s16(x4, x7, 2); // a6 a7 a8 a9
x7 = vext_s16(x4, x7, 3); // a7 a8 a9 a10
src += src_stride;
t0 = convolve8_horiz_4x1(x0, x1, x2, x3, x4, x5, x6, x7, x_filter,
shift_round_0_low, shift_by_bits_low);
if (w == 4) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(t0),
0); // 00 01 02 03
dst += dst_stride;
} else if (w == 2) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(t0), 0); // 00 01
dst += dst_stride;
}
h -= 1;
} while (h > 0);
#endif
} else {
uint8_t *d;
int16x8_t s11;
#if defined(__aarch64__)
int16x8_t 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_horiz_8x8(s0, s1, s2, s3, s4, s5, s6, s7, x_filter,
shift_round_0, shift_by_bits);
t1 = convolve8_horiz_8x8(s1, s2, s3, s4, s5, s6, s7, s8, x_filter,
shift_round_0, shift_by_bits);
t2 = convolve8_horiz_8x8(s2, s3, s4, s5, s6, s7, s8, s9, x_filter,
shift_round_0, shift_by_bits);
t3 = convolve8_horiz_8x8(s3, s4, s5, s6, s7, s8, s9, s10, x_filter,
shift_round_0, shift_by_bits);
t4 = convolve8_horiz_8x8(s4, s5, s6, s7, s8, s9, s10, s11, x_filter,
shift_round_0, shift_by_bits);
t5 = convolve8_horiz_8x8(s5, s6, s7, s8, s9, s10, s11, s12, x_filter,
shift_round_0, shift_by_bits);
t6 = convolve8_horiz_8x8(s6, s7, s8, s9, s10, s11, s12, s13, x_filter,
shift_round_0, shift_by_bits);
t7 = convolve8_horiz_8x8(s7, s8, s9, s10, s11, s12, s13, s14,
x_filter, shift_round_0, shift_by_bits);
transpose_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
if (h != 2) {
store_u8_8x8(d, dst_stride, t0, t1, t2, t3, t4, t5, t6, t7);
} else {
store_row2_u8_8x8(d, dst_stride, t0, t1);
}
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);
#else
do {
t0 = vld1_u8(src); // a0 a1 a2 a3 a4 a5 a6 a7
s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
width = w;
s = src + 8;
d = dst;
__builtin_prefetch(dst);
do {
t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
s11 = s0;
s0 = s7;
s1 = vextq_s16(s11, s7, 1); // a1 a2 a3 a4 a5 a6 a7 a8
s2 = vextq_s16(s11, s7, 2); // a2 a3 a4 a5 a6 a7 a8 a9
s3 = vextq_s16(s11, s7, 3); // a3 a4 a5 a6 a7 a8 a9 a10
s4 = vextq_s16(s11, s7, 4); // a4 a5 a6 a7 a8 a9 a10 a11
s5 = vextq_s16(s11, s7, 5); // a5 a6 a7 a8 a9 a10 a11 a12
s6 = vextq_s16(s11, s7, 6); // a6 a7 a8 a9 a10 a11 a12 a13
s7 = vextq_s16(s11, s7, 7); // a7 a8 a9 a10 a11 a12 a13 a14
t0 = convolve8_horiz_8x8(s11, s1, s2, s3, s4, s5, s6, s7, x_filter,
shift_round_0, shift_by_bits);
vst1_u8(d, t0);
s += 8;
d += 8;
width -= 8;
} while (width > 0);
src += src_stride;
dst += dst_stride;
h -= 1;
} while (h > 0);
#endif
}
#if defined(__aarch64__)
}
#endif
}
void av1_convolve_y_sr_neon(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
const InterpFilterParams *filter_params_y,
const int subpel_y_qn) {
if (filter_params_y->taps > 8) {
av1_convolve_y_sr_c(src, src_stride, dst, dst_stride, w, h, filter_params_y,
subpel_y_qn);
return;
}
const int vert_offset = filter_params_y->taps / 2 - 1;
src -= vert_offset * src_stride;
const int16_t *y_filter = av1_get_interp_filter_subpel_kernel(
filter_params_y, subpel_y_qn & SUBPEL_MASK);
if (w <= 4) {
uint8x8_t d01;
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, d0;
#if defined(__aarch64__)
uint8x8_t d23;
int16x4_t s8, s9, s10, d1, d2, d3;
#endif
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;
#if defined(__aarch64__)
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_4x4(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
d1 = convolve8_4x4(s1, s2, s3, s4, s5, s6, s7, s8, y_filter);
d2 = convolve8_4x4(s2, s3, s4, s5, s6, s7, s8, s9, y_filter);
d3 = convolve8_4x4(s3, s4, s5, s6, s7, s8, s9, s10, y_filter);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS);
if ((w == 4) && (h != 2)) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01),
0); // 00 01 02 03
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01),
1); // 10 11 12 13
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d23),
0); // 20 21 22 23
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d23),
1); // 30 31 32 33
dst += dst_stride;
} else if ((w == 4) && (h == 2)) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01),
0); // 00 01 02 03
dst += dst_stride;
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01),
1); // 10 11 12 13
dst += dst_stride;
} else if ((w == 2) && (h != 2)) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d01), 0); // 00 01
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d01), 2); // 10 11
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d23), 0); // 20 21
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d23), 2); // 30 31
dst += dst_stride;
} else if ((w == 2) && (h == 2)) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d01), 0); // 00 01
dst += dst_stride;
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d01), 2); // 10 11
dst += dst_stride;
}
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
h -= 4;
#else
__builtin_prefetch(dst + 0 * dst_stride);
__builtin_prefetch(src + 0 * src_stride);
d0 = convolve8_4x4(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
d01 = vqrshrun_n_s16(vcombine_s16(d0, d0), FILTER_BITS);
if (w == 4) {
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d01), 0);
dst += dst_stride;
} else if (w == 2) {
vst1_lane_u16((uint16_t *)dst, vreinterpret_u16_u8(d01), 0);
dst += dst_stride;
}
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
h -= 1;
#endif
} while (h > 0);
} else {
int height;
const uint8_t *s;
uint8_t *d;
uint8x8_t t0;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
#if defined(__aarch64__)
uint8x8_t t1, t2, t3;
int16x8_t s8, s9, s10;
#endif
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;
#if defined(__aarch64__)
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_vert_8x4(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
t1 = convolve8_vert_8x4(s1, s2, s3, s4, s5, s6, s7, s8, y_filter);
t2 = convolve8_vert_8x4(s2, s3, s4, s5, s6, s7, s8, s9, y_filter);
t3 = convolve8_vert_8x4(s3, s4, s5, s6, s7, s8, s9, s10, y_filter);
if (h != 2) {
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;
} else {
vst1_u8(d, t0);
d += dst_stride;
vst1_u8(d, t1);
d += dst_stride;
}
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
height -= 4;
#else
__builtin_prefetch(d);
__builtin_prefetch(s);
t0 = convolve8_vert_8x4(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
vst1_u8(d, t0);
d += dst_stride;
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
height -= 1;
#endif
} while (height > 0);
src += 8;
dst += 8;
w -= 8;
} while (w > 0);
}
}
// Horizontal filtering for convolve_2d_sr for width multiple of 8
// Processes one row at a time
static INLINE void horiz_filter_w8_single_row(
const uint8_t *src_ptr, int src_stride, int16_t *dst_ptr,
const int dst_stride, int width, int height, const int16_t *x_filter,
const int16x8_t horiz_const, const int16x8_t shift_round_0) {
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
do {
uint8x8_t t0 = vld1_u8(src_ptr);
s0 = vreinterpretq_s16_u16(vmovl_u8(t0)); // a0 a1 a2 a3 a4 a5 a6 a7
int width_tmp = width;
const uint8_t *s = src_ptr + 8;
int16_t *dst_tmp = dst_ptr;
__builtin_prefetch(dst_ptr);
do {
t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15
s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t sum = s0;
s0 = s7;
s1 = vextq_s16(sum, s7, 1); // a1 a2 a3 a4 a5 a6 a7 a8
s2 = vextq_s16(sum, s7, 2); // a2 a3 a4 a5 a6 a7 a8 a9
s3 = vextq_s16(sum, s7, 3); // a3 a4 a5 a6 a7 a8 a9 a10
s4 = vextq_s16(sum, s7, 4); // a4 a5 a6 a7 a8 a9 a10 a11
s5 = vextq_s16(sum, s7, 5); // a5 a6 a7 a8 a9 a10 a11 a12
s6 = vextq_s16(sum, s7, 6); // a6 a7 a8 a9 a10 a11 a12 a13
s7 = vextq_s16(sum, s7, 7); // a7 a8 a9 a10 a11 a12 a13 a14
int16x8_t res0 = convolve8_8x8_s16(sum, s1, s2, s3, s4, s5, s6, s7,
x_filter, horiz_const, shift_round_0);
vst1q_s16(dst_tmp, res0);
s += 8;
dst_tmp += 8;
width_tmp -= 8;
} while (width_tmp > 0);
src_ptr += src_stride;
dst_ptr += dst_stride;
height--;
} while (height > 0);
}
// Horizontal filtering for convolve_2d_sr for width <= 4
// Processes one row at a time
static INLINE void horiz_filter_w4_single_row(
const uint8_t *src_ptr, int src_stride, int16_t *dst_ptr,
const int dst_stride, int width, int height, const int16_t *x_filter,
const int16x4_t horiz_const, const int16x4_t shift_round_0) {
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7;
do {
const uint8_t *s = src_ptr;
__builtin_prefetch(s);
uint8x8_t t0 = vld1_u8(s); // a0 a1 a2 a3 a4 a5 a6 a7
int16x8_t tt0 = vreinterpretq_s16_u16(vmovl_u8(t0));
s0 = vget_low_s16(tt0);
s4 = vget_high_s16(tt0);
__builtin_prefetch(dst_ptr);
s += 8;
t0 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15
s7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4
s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5
s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6
s5 = vext_s16(s4, s7, 1); // a5 a6 a7 a8
s6 = vext_s16(s4, s7, 2); // a6 a7 a8 a9
s7 = vext_s16(s4, s7, 3); // a7 a8 a9 a10
int16x4_t d0 = convolve8_4x4_s16(s0, s1, s2, s3, s4, s5, s6, s7, x_filter,
horiz_const, shift_round_0);
if (width == 4) {
vst1_s16(dst_ptr, d0);
dst_ptr += dst_stride;
} else if (width == 2) {
vst1_lane_u32((uint32_t *)dst_ptr, vreinterpret_u32_s16(d0), 0);
dst_ptr += dst_stride;
}
src_ptr += src_stride;
height--;
} while (height > 0);
}
void av1_convolve_2d_sr_neon(const uint8_t *src, int src_stride, uint8_t *dst,
int dst_stride, int w, int h,
const InterpFilterParams *filter_params_x,
const InterpFilterParams *filter_params_y,
const int subpel_x_qn, const int subpel_y_qn,
ConvolveParams *conv_params) {
if (filter_params_x->taps > 8) {
av1_convolve_2d_sr_c(src, src_stride, dst, dst_stride, w, h,
filter_params_x, filter_params_y, subpel_x_qn,
subpel_y_qn, conv_params);
return;
}
int im_dst_stride;
int width, height;
#if defined(__aarch64__)
uint8x8_t t0;
uint8x8_t t1, t2, t3, t4, t5, t6, t7;
const uint8_t *s;
#endif
DECLARE_ALIGNED(16, int16_t,
im_block[(MAX_SB_SIZE + HORIZ_EXTRA_ROWS) * MAX_SB_SIZE]);
const int bd = 8;
const int im_h = h + filter_params_y->taps - 1;
const int im_stride = MAX_SB_SIZE;
const int vert_offset = filter_params_y->taps / 2 - 1;
const int horiz_offset = filter_params_x->taps / 2 - 1;
const uint8_t *src_ptr = src - vert_offset * src_stride - horiz_offset;
int16_t *dst_ptr;
dst_ptr = im_block;
im_dst_stride = im_stride;
height = im_h;
width = w;
const int16_t round_bits =
FILTER_BITS * 2 - conv_params->round_0 - conv_params->round_1;
const int16x8_t vec_round_bits = vdupq_n_s16(-round_bits);
const int offset_bits = bd + 2 * FILTER_BITS - conv_params->round_0;
const int16_t *x_filter = av1_get_interp_filter_subpel_kernel(
filter_params_x, subpel_x_qn & SUBPEL_MASK);
int16_t x_filter_tmp[8];
int16x8_t filter_x_coef = vld1q_s16(x_filter);
// filter coeffs are even, so downshifting by 1 to reduce intermediate
// precision requirements.
filter_x_coef = vshrq_n_s16(filter_x_coef, 1);
vst1q_s16(&x_filter_tmp[0], filter_x_coef);
assert(conv_params->round_0 > 0);
if (w <= 4) {
const int16x4_t horiz_const = vdup_n_s16((1 << (bd + FILTER_BITS - 2)));
const int16x4_t shift_round_0 = vdup_n_s16(-(conv_params->round_0 - 1));
#if defined(__aarch64__)
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, d0, d1, d2, d3;
do {
assert(height >= 4);
s = src_ptr;
__builtin_prefetch(s + 0 * src_stride);
__builtin_prefetch(s + 1 * src_stride);
__builtin_prefetch(s + 2 * src_stride);
__builtin_prefetch(s + 3 * src_stride);
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s5 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s6 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
__builtin_prefetch(dst_ptr + 0 * im_dst_stride);
__builtin_prefetch(dst_ptr + 1 * im_dst_stride);
__builtin_prefetch(dst_ptr + 2 * im_dst_stride);
__builtin_prefetch(dst_ptr + 3 * im_dst_stride);
s += 7;
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
s7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
s9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
d0 = convolve8_4x4_s16(s0, s1, s2, s3, s4, s5, s6, s7, x_filter_tmp,
horiz_const, shift_round_0);
d1 = convolve8_4x4_s16(s1, s2, s3, s4, s5, s6, s7, s8, x_filter_tmp,
horiz_const, shift_round_0);
d2 = convolve8_4x4_s16(s2, s3, s4, s5, s6, s7, s8, s9, x_filter_tmp,
horiz_const, shift_round_0);
d3 = convolve8_4x4_s16(s3, s4, s5, s6, s7, s8, s9, s10, x_filter_tmp,
horiz_const, shift_round_0);
transpose_s16_4x4d(&d0, &d1, &d2, &d3);
if (w == 4) {
vst1_s16((dst_ptr + 0 * im_dst_stride), d0);
vst1_s16((dst_ptr + 1 * im_dst_stride), d1);
vst1_s16((dst_ptr + 2 * im_dst_stride), d2);
vst1_s16((dst_ptr + 3 * im_dst_stride), d3);
} else if (w == 2) {
vst1_lane_u32((uint32_t *)(dst_ptr + 0 * im_dst_stride),
vreinterpret_u32_s16(d0), 0);
vst1_lane_u32((uint32_t *)(dst_ptr + 1 * im_dst_stride),
vreinterpret_u32_s16(d1), 0);
vst1_lane_u32((uint32_t *)(dst_ptr + 2 * im_dst_stride),
vreinterpret_u32_s16(d2), 0);
vst1_lane_u32((uint32_t *)(dst_ptr + 3 * im_dst_stride),
vreinterpret_u32_s16(d3), 0);
}
src_ptr += 4 * src_stride;
dst_ptr += 4 * im_dst_stride;
height -= 4;
} while (height >= 4);
if (height) {
assert(height < 4);
horiz_filter_w4_single_row(src_ptr, src_stride, dst_ptr, im_dst_stride, w,
height, x_filter_tmp, horiz_const,
shift_round_0);
}
#else
horiz_filter_w4_single_row(src_ptr, src_stride, dst_ptr, im_dst_stride, w,
height, x_filter_tmp, horiz_const,
shift_round_0);
#endif
} else {
const int16x8_t horiz_const = vdupq_n_s16((1 << (bd + FILTER_BITS - 2)));
const int16x8_t shift_round_0 = vdupq_n_s16(-(conv_params->round_0 - 1));
#if defined(__aarch64__)
int16_t *d_tmp;
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14;
int16x8_t res0, res1, res2, res3, res4, res5, res6, res7;
do {
assert(height >= 8);
__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);
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_ptr + 7;
d_tmp = dst_ptr;
__builtin_prefetch(dst_ptr + 0 * im_dst_stride);
__builtin_prefetch(dst_ptr + 1 * im_dst_stride);
__builtin_prefetch(dst_ptr + 2 * im_dst_stride);
__builtin_prefetch(dst_ptr + 3 * im_dst_stride);
__builtin_prefetch(dst_ptr + 4 * im_dst_stride);
__builtin_prefetch(dst_ptr + 5 * im_dst_stride);
__builtin_prefetch(dst_ptr + 6 * im_dst_stride);
__builtin_prefetch(dst_ptr + 7 * im_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));
res0 = convolve8_8x8_s16(s0, s1, s2, s3, s4, s5, s6, s7, x_filter_tmp,
horiz_const, shift_round_0);
res1 = convolve8_8x8_s16(s1, s2, s3, s4, s5, s6, s7, s8, x_filter_tmp,
horiz_const, shift_round_0);
res2 = convolve8_8x8_s16(s2, s3, s4, s5, s6, s7, s8, s9, x_filter_tmp,
horiz_const, shift_round_0);
res3 = convolve8_8x8_s16(s3, s4, s5, s6, s7, s8, s9, s10, x_filter_tmp,
horiz_const, shift_round_0);
res4 = convolve8_8x8_s16(s4, s5, s6, s7, s8, s9, s10, s11, x_filter_tmp,
horiz_const, shift_round_0);
res5 = convolve8_8x8_s16(s5, s6, s7, s8, s9, s10, s11, s12,
x_filter_tmp, horiz_const, shift_round_0);
res6 = convolve8_8x8_s16(s6, s7, s8, s9, s10, s11, s12, s13,
x_filter_tmp, horiz_const, shift_round_0);
res7 = convolve8_8x8_s16(s7, s8, s9, s10, s11, s12, s13, s14,
x_filter_tmp, horiz_const, shift_round_0);
transpose_s16_8x8(&res0, &res1, &res2, &res3, &res4, &res5, &res6,
&res7);
store_s16_8x8(d_tmp, im_dst_stride, res0, res1, res2, res3, res4, res5,
res6, res7);
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 += 8 * src_stride;
dst_ptr += 8 * im_dst_stride;
height -= 8;
} while (height >= 8);
if (height >= 4) {
assert(height < 8);
int16x4_t reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7, reg8, reg9,
reg10, reg11, reg12, reg13, reg14;
int16x4_t d0, d1, d2, d3, d4, d5, d6, d7;
int16x8_t out0, out1, out2, out3;
__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);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
reg0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
reg1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
reg2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
reg3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
reg4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
reg5 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
reg6 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
__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);
transpose_u8_8x4(&t0, &t1, &t2, &t3);
reg7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
reg8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
reg9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
reg10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
reg11 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
reg12 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
reg13 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
reg14 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
d0 = convolve8_4x4(reg0, reg1, reg2, reg3, reg4, reg5, reg6, reg7,
x_filter_tmp);
d1 = convolve8_4x4(reg1, reg2, reg3, reg4, reg5, reg6, reg7, reg8,
x_filter_tmp);
d2 = convolve8_4x4(reg2, reg3, reg4, reg5, reg6, reg7, reg8, reg9,
x_filter_tmp);
d3 = convolve8_4x4(reg3, reg4, reg5, reg6, reg7, reg8, reg9, reg10,
x_filter_tmp);
d4 = convolve8_4x4(reg4, reg5, reg6, reg7, reg8, reg9, reg10, reg11,
x_filter_tmp);
d5 = convolve8_4x4(reg5, reg6, reg7, reg8, reg9, reg10, reg11, reg12,
x_filter_tmp);
d6 = convolve8_4x4(reg6, reg7, reg8, reg9, reg10, reg11, reg12, reg13,
x_filter_tmp);
d7 = convolve8_4x4(reg7, reg8, reg9, reg10, reg11, reg12, reg13, reg14,
x_filter_tmp);
transpose_s16_4x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7, &out0, &out1,
&out2, &out3);
out0 = vaddq_s16(out0, horiz_const);
out0 = vqrshlq_s16(out0, shift_round_0);
out1 = vaddq_s16(out1, horiz_const);
out1 = vqrshlq_s16(out1, shift_round_0);
out2 = vaddq_s16(out2, horiz_const);
out2 = vqrshlq_s16(out2, shift_round_0);
out3 = vaddq_s16(out3, horiz_const);
out3 = vqrshlq_s16(out3, shift_round_0);
store_s16_8x4(d_tmp, im_dst_stride, out0, out1, out2, out3);
reg0 = reg8;
reg1 = reg9;
reg2 = reg10;
reg3 = reg11;
reg4 = reg12;
reg5 = reg13;
reg6 = reg14;
s += 8;
d_tmp += 8;
width -= 8;
} while (width > 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * im_dst_stride;
height -= 4;
}
if (height) {
assert(height < 4);
horiz_filter_w8_single_row(src_ptr, src_stride, dst_ptr, im_stride, w,
height, x_filter_tmp, horiz_const,
shift_round_0);
}
#else
horiz_filter_w8_single_row(src_ptr, src_stride, dst_ptr, im_stride, w,
height, x_filter_tmp, horiz_const,
shift_round_0);
#endif
}
// vertical
{
uint8_t *dst_u8_ptr, *d_u8;
int16_t *v_src_ptr, *v_s;
const int32_t sub_const = (1 << (offset_bits - conv_params->round_1)) +
(1 << (offset_bits - conv_params->round_1 - 1));
const int16_t *y_filter = av1_get_interp_filter_subpel_kernel(
filter_params_y, subpel_y_qn & SUBPEL_MASK);
const int32x4_t round_shift_vec = vdupq_n_s32(-(conv_params->round_1));
const int32x4_t offset_const = vdupq_n_s32(1 << offset_bits);
const int32x4_t sub_const_vec = vdupq_n_s32(sub_const);
src_stride = im_stride;
v_src_ptr = im_block;
dst_u8_ptr = dst;
height = h;
width = w;
if (width <= 4) {
int16x4_t s0, s1, s2, s3, s4, s5, s6, s7;
uint16x4_t d0;
uint16x8_t dd0;
uint8x8_t d01;
#if defined(__aarch64__)
int16x4_t s8, s9, s10;
uint16x4_t d1, d2, d3;
uint16x8_t dd1;
uint8x8_t d23;
#endif
d_u8 = dst_u8_ptr;
v_s = v_src_ptr;
__builtin_prefetch(v_s + 0 * im_stride);
__builtin_prefetch(v_s + 1 * im_stride);
__builtin_prefetch(v_s + 2 * im_stride);
__builtin_prefetch(v_s + 3 * im_stride);
__builtin_prefetch(v_s + 4 * im_stride);
__builtin_prefetch(v_s + 5 * im_stride);
__builtin_prefetch(v_s + 6 * im_stride);
__builtin_prefetch(v_s + 7 * im_stride);
load_s16_4x8(v_s, im_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7);
v_s += (7 * im_stride);
do {
#if defined(__aarch64__)
load_s16_4x4(v_s, im_stride, &s7, &s8, &s9, &s10);
v_s += (im_stride << 2);
__builtin_prefetch(d_u8 + 0 * dst_stride);
__builtin_prefetch(d_u8 + 1 * dst_stride);
__builtin_prefetch(d_u8 + 2 * dst_stride);
__builtin_prefetch(d_u8 + 3 * dst_stride);
d0 = convolve8_vert_4x4_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter,
round_shift_vec, offset_const,
sub_const_vec);
d1 = convolve8_vert_4x4_s32(s1, s2, s3, s4, s5, s6, s7, s8, y_filter,
round_shift_vec, offset_const,
sub_const_vec);
d2 = convolve8_vert_4x4_s32(s2, s3, s4, s5, s6, s7, s8, s9, y_filter,
round_shift_vec, offset_const,
sub_const_vec);
d3 = convolve8_vert_4x4_s32(s3, s4, s5, s6, s7, s8, s9, s10, y_filter,
round_shift_vec, offset_const,
sub_const_vec);
dd0 = vqrshlq_u16(vcombine_u16(d0, d1), vec_round_bits);
dd1 = vqrshlq_u16(vcombine_u16(d2, d3), vec_round_bits);
d01 = vqmovn_u16(dd0);
d23 = vqmovn_u16(dd1);
if ((w == 4) && (h != 2)) {
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d01),
0); // 00 01 02 03
d_u8 += dst_stride;
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d01),
1); // 10 11 12 13
d_u8 += dst_stride;
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d23),
0); // 20 21 22 23
d_u8 += dst_stride;
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d23),
1); // 30 31 32 33
d_u8 += dst_stride;
} else if ((w == 2) && (h != 2)) {
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d01),
0); // 00 01
d_u8 += dst_stride;
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d01),
2); // 10 11
d_u8 += dst_stride;
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d23),
0); // 20 21
d_u8 += dst_stride;
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d23),
2); // 30 31
d_u8 += dst_stride;
} else if ((w == 4) && (h == 2)) {
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d01),
0); // 00 01 02 03
d_u8 += dst_stride;
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d01),
1); // 10 11 12 13
d_u8 += dst_stride;
} else if ((w == 2) && (h == 2)) {
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d01),
0); // 00 01
d_u8 += dst_stride;
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d01),
2); // 10 11
d_u8 += dst_stride;
}
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
height -= 4;
#else
s7 = vld1_s16(v_s);
v_s += im_stride;
__builtin_prefetch(d_u8 + 0 * dst_stride);
d0 = convolve8_vert_4x4_s32(s0, s1, s2, s3, s4, s5, s6, s7, y_filter,
round_shift_vec, offset_const,
sub_const_vec);
dd0 = vqrshlq_u16(vcombine_u16(d0, d0), vec_round_bits);
d01 = vqmovn_u16(dd0);
if (w == 4) {
vst1_lane_u32((uint32_t *)d_u8, vreinterpret_u32_u8(d01),
0); // 00 01 02 03
d_u8 += dst_stride;
} else if (w == 2) {
vst1_lane_u16((uint16_t *)d_u8, vreinterpret_u16_u8(d01),
0); // 00 01
d_u8 += dst_stride;
}
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
height -= 1;
#endif
} while (height > 0);
} else {
// if width is a multiple of 8 & height is a multiple of 4
int16x8_t s0, s1, s2, s3, s4, s5, s6, s7;
uint8x8_t res0;
#if defined(__aarch64__)
int16x8_t s8, s9, s10;
uint8x8_t res1, res2, res3;
#endif
do {
__builtin_prefetch(v_src_ptr + 0 * im_stride);
__builtin_prefetch(v_src_ptr + 1 * im_stride);
__builtin_prefetch(v_src_ptr + 2 * im_stride);
__builtin_prefetch(v_src_ptr + 3 * im_stride);
__builtin_prefetch(v_src_ptr + 4 * im_stride);
__builtin_prefetch(v_src_ptr + 5 * im_stride);
__builtin_prefetch(v_src_ptr + 6 * im_stride);
__builtin_prefetch(v_src_ptr + 7 * im_stride);
v_s = v_src_ptr;
load_s16_8x8(v_s, im_stride, &s0, &s1, &s2, &s3, &s4, &s5, &s6, &s7);
v_s += (7 * im_stride);
d_u8 = dst_u8_ptr;
height = h;
do {
#if defined(__aarch64__)
load_s16_8x4(v_s, im_stride, &s7, &s8, &s9, &s10);
v_s += (im_stride << 2);
__builtin_prefetch(d_u8 + 4 * dst_stride);
__builtin_prefetch(d_u8 + 5 * dst_stride);
__builtin_prefetch(d_u8 + 6 * dst_stride);
__builtin_prefetch(d_u8 + 7 * dst_stride);
res0 = convolve8_vert_8x4_s32(s0, s1, s2, s3, s4, s5, s6, s7,
y_filter, round_shift_vec, offset_const,
sub_const_vec, vec_round_bits);
res1 = convolve8_vert_8x4_s32(s1, s2, s3, s4, s5, s6, s7, s8,
y_filter, round_shift_vec, offset_const,
sub_const_vec, vec_round_bits);
res2 = convolve8_vert_8x4_s32(s2, s3, s4, s5, s6, s7, s8, s9,
y_filter, round_shift_vec, offset_const,
sub_const_vec, vec_round_bits);
res3 = convolve8_vert_8x4_s32(s3, s4, s5, s6, s7, s8, s9, s10,
y_filter, round_shift_vec, offset_const,
sub_const_vec, vec_round_bits);
if (h != 2) {
vst1_u8(d_u8, res0);
d_u8 += dst_stride;
vst1_u8(d_u8, res1);
d_u8 += dst_stride;
vst1_u8(d_u8, res2);
d_u8 += dst_stride;
vst1_u8(d_u8, res3);
d_u8 += dst_stride;
} else {
vst1_u8(d_u8, res0);
d_u8 += dst_stride;
vst1_u8(d_u8, res1);
d_u8 += dst_stride;
}
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
height -= 4;
#else
s7 = vld1q_s16(v_s);
v_s += im_stride;
__builtin_prefetch(d_u8 + 0 * dst_stride);
res0 = convolve8_vert_8x4_s32(s0, s1, s2, s3, s4, s5, s6, s7,
y_filter, round_shift_vec, offset_const,
sub_const_vec, vec_round_bits);
vst1_u8(d_u8, res0);
d_u8 += dst_stride;
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
height -= 1;
#endif
} while (height > 0);
v_src_ptr += 8;
dst_u8_ptr += 8;
w -= 8;
} while (w > 0);
}
}
}
static INLINE void scaledconvolve_horiz_w4(
const uint8_t *src, const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride, const InterpKernel *const x_filters,
const int x0_q4, const int x_step_q4, const int w, const int h) {
DECLARE_ALIGNED(16, uint8_t, temp[4 * 4]);
int x, y, z;
src -= SUBPEL_TAPS / 2 - 1;
y = h;
do {
int x_q4 = x0_q4;
x = 0;
do {
// process 4 src_x steps
for (z = 0; z < 4; ++z) {
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
if (x_q4 & SUBPEL_MASK) {
const int16x8_t filters = vld1q_s16(x_filters[x_q4 & SUBPEL_MASK]);
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 s[8], d;
int16x8_t ss[4];
int16x4_t t[8], tt;
load_u8_8x4(src_x, src_stride, &s[0], &s[1], &s[2], &s[3]);
transpose_u8_8x4(&s[0], &s[1], &s[2], &s[3]);
ss[0] = vreinterpretq_s16_u16(vmovl_u8(s[0]));
ss[1] = vreinterpretq_s16_u16(vmovl_u8(s[1]));
ss[2] = vreinterpretq_s16_u16(vmovl_u8(s[2]));
ss[3] = vreinterpretq_s16_u16(vmovl_u8(s[3]));
t[0] = vget_low_s16(ss[0]);
t[1] = vget_low_s16(ss[1]);
t[2] = vget_low_s16(ss[2]);
t[3] = vget_low_s16(ss[3]);
t[4] = vget_high_s16(ss[0]);
t[5] = vget_high_s16(ss[1]);
t[6] = vget_high_s16(ss[2]);
t[7] = vget_high_s16(ss[3]);
tt = convolve8_4(t[0], t[1], t[2], t[3], t[4], t[5], t[6], t[7],
filters, filter3, filter4);
d = vqrshrun_n_s16(vcombine_s16(tt, tt), 7);
vst1_lane_u32((uint32_t *)&temp[4 * z], vreinterpret_u32_u8(d), 0);
} else {
int i;
for (i = 0; i < 4; ++i) {
temp[z * 4 + i] = src_x[i * src_stride + 3];
}
}
x_q4 += x_step_q4;
}
// transpose the 4x4 filters values back to dst
{
const uint8x8x4_t d4 = vld4_u8(temp);
vst1_lane_u32((uint32_t *)&dst[x + 0 * dst_stride],
vreinterpret_u32_u8(d4.val[0]), 0);
vst1_lane_u32((uint32_t *)&dst[x + 1 * dst_stride],
vreinterpret_u32_u8(d4.val[1]), 0);
vst1_lane_u32((uint32_t *)&dst[x + 2 * dst_stride],
vreinterpret_u32_u8(d4.val[2]), 0);
vst1_lane_u32((uint32_t *)&dst[x + 3 * dst_stride],
vreinterpret_u32_u8(d4.val[3]), 0);
}
x += 4;
} while (x < w);
src += src_stride * 4;
dst += dst_stride * 4;
y -= 4;
} while (y > 0);
}
static INLINE void scaledconvolve_horiz_w8(
const uint8_t *src, const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride, const InterpKernel *const x_filters,
const int x0_q4, const int x_step_q4, const int w, const int h) {
DECLARE_ALIGNED(16, uint8_t, temp[8 * 8]);
int x, y, z;
src -= SUBPEL_TAPS / 2 - 1;
// This function processes 8x8 areas. The intermediate height is not always
// a multiple of 8, so force it to be a multiple of 8 here.
y = (h + 7) & ~7;
do {
int x_q4 = x0_q4;
x = 0;
do {
uint8x8_t d[8];
// process 8 src_x steps
for (z = 0; z < 8; ++z) {
const uint8_t *const src_x = &src[x_q4 >> SUBPEL_BITS];
if (x_q4 & SUBPEL_MASK) {
const int16x8_t filters = vld1q_s16(x_filters[x_q4 & SUBPEL_MASK]);
uint8x8_t s[8];
load_u8_8x8(src_x, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4],
&s[5], &s[6], &s[7]);
transpose_u8_8x8(&s[0], &s[1], &s[2], &s[3], &s[4], &s[5], &s[6],
&s[7]);
d[0] = scale_filter_8(s, filters);
vst1_u8(&temp[8 * z], d[0]);
} else {
int i;
for (i = 0; i < 8; ++i) {
temp[z * 8 + i] = src_x[i * src_stride + 3];
}
}
x_q4 += x_step_q4;
}
// transpose the 8x8 filters values back to dst
load_u8_8x8(temp, 8, &d[0], &d[1], &d[2], &d[3], &d[4], &d[5], &d[6],
&d[7]);
transpose_u8_8x8(&d[0], &d[1], &d[2], &d[3], &d[4], &d[5], &d[6], &d[7]);
vst1_u8(&dst[x + 0 * dst_stride], d[0]);
vst1_u8(&dst[x + 1 * dst_stride], d[1]);
vst1_u8(&dst[x + 2 * dst_stride], d[2]);
vst1_u8(&dst[x + 3 * dst_stride], d[3]);
vst1_u8(&dst[x + 4 * dst_stride], d[4]);
vst1_u8(&dst[x + 5 * dst_stride], d[5]);
vst1_u8(&dst[x + 6 * dst_stride], d[6]);
vst1_u8(&dst[x + 7 * dst_stride], d[7]);
x += 8;
} while (x < w);
src += src_stride * 8;
dst += dst_stride * 8;
} while (y -= 8);
}
static INLINE void scaledconvolve_vert_w4(
const uint8_t *src, const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride, const InterpKernel *const y_filters,
const int y0_q4, const int y_step_q4, const int w, const int h) {
int y;
int y_q4 = y0_q4;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
y = h;
do {
const unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
if (y_q4 & SUBPEL_MASK) {
const int16x8_t filters = vld1q_s16(y_filters[y_q4 & SUBPEL_MASK]);
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 s[8], d;
int16x4_t t[8], tt;
load_u8_8x8(src_y, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5],
&s[6], &s[7]);
t[0] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[0])));
t[1] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[1])));
t[2] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[2])));
t[3] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[3])));
t[4] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[4])));
t[5] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[5])));
t[6] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[6])));
t[7] = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(s[7])));
tt = convolve8_4(t[0], t[1], t[2], t[3], t[4], t[5], t[6], t[7], filters,
filter3, filter4);
d = vqrshrun_n_s16(vcombine_s16(tt, tt), 7);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(d), 0);
} else {
memcpy(dst, &src_y[3 * src_stride], w);
}
dst += dst_stride;
y_q4 += y_step_q4;
} while (--y);
}
static INLINE void scaledconvolve_vert_w8(
const uint8_t *src, const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride, const InterpKernel *const y_filters,
const int y0_q4, const int y_step_q4, const int w, const int h) {
int y;
int y_q4 = y0_q4;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
y = h;
do {
const unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
if (y_q4 & SUBPEL_MASK) {
const int16x8_t filters = vld1q_s16(y_filters[y_q4 & SUBPEL_MASK]);
uint8x8_t s[8], d;
load_u8_8x8(src_y, src_stride, &s[0], &s[1], &s[2], &s[3], &s[4], &s[5],
&s[6], &s[7]);
d = scale_filter_8(s, filters);
vst1_u8(dst, d);
} else {
memcpy(dst, &src_y[3 * src_stride], w);
}
dst += dst_stride;
y_q4 += y_step_q4;
} while (--y);
}
static INLINE void scaledconvolve_vert_w16(
const uint8_t *src, const ptrdiff_t src_stride, uint8_t *dst,
const ptrdiff_t dst_stride, const InterpKernel *const y_filters,
const int y0_q4, const int y_step_q4, const int w, const int h) {
int x, y;
int y_q4 = y0_q4;
src -= src_stride * (SUBPEL_TAPS / 2 - 1);
y = h;
do {
const unsigned char *src_y = &src[(y_q4 >> SUBPEL_BITS) * src_stride];
if (y_q4 & SUBPEL_MASK) {
x = 0;
do {
const int16x8_t filters = vld1q_s16(y_filters[y_q4 & SUBPEL_MASK]);
uint8x16_t ss[8];
uint8x8_t s[8], d[2];
load_u8_16x8(src_y, src_stride, &ss[0], &ss[1], &ss[2], &ss[3], &ss[4],
&ss[5], &ss[6], &ss[7]);
s[0] = vget_low_u8(ss[0]);
s[1] = vget_low_u8(ss[1]);
s[2] = vget_low_u8(ss[2]);
s[3] = vget_low_u8(ss[3]);
s[4] = vget_low_u8(ss[4]);
s[5] = vget_low_u8(ss[5]);
s[6] = vget_low_u8(ss[6]);
s[7] = vget_low_u8(ss[7]);
d[0] = scale_filter_8(s, filters);
s[0] = vget_high_u8(ss[0]);
s[1] = vget_high_u8(ss[1]);
s[2] = vget_high_u8(ss[2]);
s[3] = vget_high_u8(ss[3]);
s[4] = vget_high_u8(ss[4]);
s[5] = vget_high_u8(ss[5]);
s[6] = vget_high_u8(ss[6]);
s[7] = vget_high_u8(ss[7]);
d[1] = scale_filter_8(s, filters);
vst1q_u8(&dst[x], vcombine_u8(d[0], d[1]));
src_y += 16;
x += 16;
} while (x < w);
} else {
memcpy(dst, &src_y[3 * src_stride], w);
}
dst += dst_stride;
y_q4 += y_step_q4;
} while (--y);
}
void aom_scaled_2d_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) {
// Note: Fixed size intermediate buffer, temp, places limits on parameters.
// 2d filtering proceeds in 2 steps:
// (1) Interpolate horizontally into an intermediate buffer, temp.
// (2) Interpolate temp vertically to derive the sub-pixel result.
// Deriving the maximum number of rows in the temp buffer (135):
// --Smallest scaling factor is x1/2 ==> y_step_q4 = 32 (Normative).
// --Largest block size is 64x64 pixels.
// --64 rows in the downscaled frame span a distance of (64 - 1) * 32 in the
// original frame (in 1/16th pixel units).
// --Must round-up because block may be located at sub-pixel position.
// --Require an additional SUBPEL_TAPS rows for the 8-tap filter tails.
// --((64 - 1) * 32 + 15) >> 4 + 8 = 135.
// --Require an additional 8 rows for the horiz_w8 transpose tail.
// When calling in frame scaling function, the smallest scaling factor is x1/4
// ==> y_step_q4 = 64. Since w and h are at most 16, the temp buffer is still
// big enough.
DECLARE_ALIGNED(16, uint8_t, temp[(135 + 8) * 64]);
const int intermediate_height =
(((h - 1) * y_step_q4 + y0_q4) >> SUBPEL_BITS) + SUBPEL_TAPS;
assert(w <= 64);
assert(h <= 64);
assert(y_step_q4 <= 32 || (y_step_q4 <= 64 && h <= 32));
assert(x_step_q4 <= 64);
if (w >= 8) {
scaledconvolve_horiz_w8(src - src_stride * (SUBPEL_TAPS / 2 - 1),
src_stride, temp, 64, filter, x0_q4, x_step_q4, w,
intermediate_height);
} else {
scaledconvolve_horiz_w4(src - src_stride * (SUBPEL_TAPS / 2 - 1),
src_stride, temp, 64, filter, x0_q4, x_step_q4, w,
intermediate_height);
}
if (w >= 16) {
scaledconvolve_vert_w16(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst,
dst_stride, filter, y0_q4, y_step_q4, w, h);
} else if (w == 8) {
scaledconvolve_vert_w8(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst,
dst_stride, filter, y0_q4, y_step_q4, w, h);
} else {
scaledconvolve_vert_w4(temp + 64 * (SUBPEL_TAPS / 2 - 1), 64, dst,
dst_stride, filter, y0_q4, y_step_q4, w, h);
}
}