blob: fa989227334dca867bb7b7f7eed8b529fb97bd9e [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/aom_config.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 convolve12_4_x(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 int16x4_t s8, const int16x4_t s9,
const int16x4_t s10, const int16x4_t s11,
const int16x8_t x_filter_0_7,
const int16x4_t x_filter_8_11,
const int32x4_t horiz_const) {
const int16x4_t x_filter_0_3 = vget_low_s16(x_filter_0_7);
const int16x4_t x_filter_4_7 = vget_high_s16(x_filter_0_7);
int32x4_t sum = horiz_const;
sum = vmlal_lane_s16(sum, s0, x_filter_0_3, 0);
sum = vmlal_lane_s16(sum, s1, x_filter_0_3, 1);
sum = vmlal_lane_s16(sum, s2, x_filter_0_3, 2);
sum = vmlal_lane_s16(sum, s3, x_filter_0_3, 3);
sum = vmlal_lane_s16(sum, s4, x_filter_4_7, 0);
sum = vmlal_lane_s16(sum, s5, x_filter_4_7, 1);
sum = vmlal_lane_s16(sum, s6, x_filter_4_7, 2);
sum = vmlal_lane_s16(sum, s7, x_filter_4_7, 3);
sum = vmlal_lane_s16(sum, s8, x_filter_8_11, 0);
sum = vmlal_lane_s16(sum, s9, x_filter_8_11, 1);
sum = vmlal_lane_s16(sum, s10, x_filter_8_11, 2);
sum = vmlal_lane_s16(sum, s11, x_filter_8_11, 3);
return vqrshrn_n_s32(sum, FILTER_BITS);
}
static INLINE void convolve_x_sr_12tap_neon(const uint8_t *src_ptr,
int src_stride, uint8_t *dst_ptr,
const int dst_stride, int w, int h,
const int16_t *x_filter_ptr) {
const int16x8_t x_filter_0_7 = vld1q_s16(x_filter_ptr);
const int16x4_t x_filter_8_11 = vld1_s16(x_filter_ptr + 8);
// A shim of 1 << (ROUND0_BITS - 1) enables us to use a single rounding right
// shift by FILTER_BITS - instead of a first rounding right shift by
// ROUND0_BITS, followed by second rounding right shift by FILTER_BITS -
// ROUND0_BITS.
const int32x4_t horiz_const = vdupq_n_s32(1 << (ROUND0_BITS - 1));
#if AOM_ARCH_AARCH64
do {
const uint8_t *s = src_ptr;
uint8_t *d = dst_ptr;
int width = w;
uint8x8_t t0, t1, t2, t3;
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s5 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s6 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s7 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
load_u8_8x4(s + 8, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s += 11;
do {
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s11 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s12 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s13 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s14 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t d0 =
convolve12_4_x(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d1 =
convolve12_4_x(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d2 =
convolve12_4_x(s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d3 =
convolve12_4_x(s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14,
x_filter_0_7, x_filter_8_11, horiz_const);
transpose_elems_inplace_s16_4x4(&d0, &d1, &d2, &d3);
uint8x8_t d01 = vqmovun_s16(vcombine_s16(d0, d1));
uint8x8_t d23 = vqmovun_s16(vcombine_s16(d2, d3));
store_u8_4x1(d + 0 * dst_stride, d01, 0);
store_u8_4x1(d + 1 * dst_stride, d01, 1);
store_u8_4x1(d + 2 * dst_stride, d23, 0);
store_u8_4x1(d + 3 * dst_stride, d23, 1);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s7 = s11;
s8 = s12;
s9 = s13;
s10 = s14;
s += 4;
d += 4;
width -= 4;
} while (width != 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
h -= 4;
} while (h != 0);
#else // !AOM_ARCH_AARCH64
do {
const uint8_t *s = src_ptr;
uint8_t *d = dst_ptr;
int width = w;
do {
uint8x16_t t0 = vld1q_u8(s);
int16x8_t tt0 = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(t0)));
int16x8_t tt8 = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(t0)));
int16x4_t s0 = vget_low_s16(tt0);
int16x4_t s4 = vget_high_s16(tt0);
int16x4_t s8 = vget_low_s16(tt8);
int16x4_t s12 = vget_high_s16(tt8);
int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4
int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5
int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6
int16x4_t s5 = vext_s16(s4, s8, 1); // a5 a6 a7 a8
int16x4_t s6 = vext_s16(s4, s8, 2); // a6 a7 a8 a9
int16x4_t s7 = vext_s16(s4, s8, 3); // a7 a8 a9 a10
int16x4_t s9 = vext_s16(s8, s12, 1); // a9 a10 a11 a12
int16x4_t s10 = vext_s16(s8, s12, 2); // a10 a11 a12 a13
int16x4_t s11 = vext_s16(s8, s12, 3); // a11 a12 a13 a14
int16x4_t d0 =
convolve12_4_x(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
x_filter_0_7, x_filter_8_11, horiz_const);
uint8x8_t dd0 = vqmovun_s16(vcombine_s16(d0, vdup_n_s16(0)));
store_u8_4x1(d, dd0, 0);
s += 4;
d += 4;
width -= 4;
} while (width != 0);
src_ptr += src_stride;
dst_ptr += dst_stride;
} while (--h != 0);
#endif // AOM_ARCH_AARCH64
}
static INLINE uint8x8_t convolve4_4_x(const int16x4_t s0, const int16x4_t s1,
const int16x4_t s2, const int16x4_t s3,
const int16x4_t filter,
const int16x4_t horiz_const) {
int16x4_t sum = horiz_const;
sum = vmla_lane_s16(sum, s0, filter, 0);
sum = vmla_lane_s16(sum, s1, filter, 1);
sum = vmla_lane_s16(sum, s2, filter, 2);
sum = vmla_lane_s16(sum, s3, filter, 3);
// We halved the convolution filter values so - 1 from the right shift.
return vqrshrun_n_s16(vcombine_s16(sum, vdup_n_s16(0)), FILTER_BITS - 1);
}
static INLINE uint8x8_t convolve8_8_x(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 int16x8_t filter,
const int16x8_t horiz_const) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int16x8_t sum = horiz_const;
sum = vmlaq_lane_s16(sum, s0, filter_lo, 0);
sum = vmlaq_lane_s16(sum, s1, filter_lo, 1);
sum = vmlaq_lane_s16(sum, s2, filter_lo, 2);
sum = vmlaq_lane_s16(sum, s3, filter_lo, 3);
sum = vmlaq_lane_s16(sum, s4, filter_hi, 0);
sum = vmlaq_lane_s16(sum, s5, filter_hi, 1);
sum = vmlaq_lane_s16(sum, s6, filter_hi, 2);
sum = vmlaq_lane_s16(sum, s7, filter_hi, 3);
// We halved the convolution filter values so - 1 from the right shift.
return vqrshrun_n_s16(sum, FILTER_BITS - 1);
}
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 (w == 2 || h == 2) {
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;
src -= horiz_offset;
const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_x, subpel_x_qn & SUBPEL_MASK);
if (filter_params_x->taps > 8) {
convolve_x_sr_12tap_neon(src, src_stride, dst, dst_stride, w, h,
x_filter_ptr);
return;
}
// This shim of 1 << ((ROUND0_BITS - 1) - 1) enables us to use a single
// rounding right shift by FILTER_BITS - instead of a first rounding right
// shift by ROUND0_BITS, followed by second rounding right shift by
// FILTER_BITS - ROUND0_BITS.
// The outermost -1 is needed because we will halve the filter values.
const int16x8_t horiz_const = vdupq_n_s16(1 << ((ROUND0_BITS - 1) - 1));
if (w <= 4) {
// 4-tap filters are used for blocks having width <= 4.
// Filter values are even, so halve to reduce intermediate precision reqs.
const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1);
src += 2;
do {
uint8x8_t t0 = vld1_u8(src); // a0 a1 a2 a3 a4 a5 a6 a7
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4
int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5
int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6
uint8x8_t d0 =
convolve4_4_x(s0, s1, s2, s3, x_filter, vget_low_s16(horiz_const));
store_u8_4x1(dst, d0, 0);
src += src_stride;
dst += dst_stride;
} while (--h != 0);
} else {
// Filter values are even so halve to reduce precision requirements.
const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1);
#if AOM_ARCH_AARCH64
while (h >= 8) {
uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7;
load_u8_8x8(src, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
int width = w;
const uint8_t *s = src + 7;
uint8_t *d = dst;
__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(d + 4 * dst_stride);
__builtin_prefetch(d + 5 * dst_stride);
__builtin_prefetch(d + 6 * dst_stride);
__builtin_prefetch(d + 7 * dst_stride);
do {
uint8x8_t t8, t9, t10, t11, t12, t13, t14;
load_u8_8x8(s, src_stride, &t7, &t8, &t9, &t10, &t11, &t12, &t13, &t14);
transpose_elems_inplace_u8_8x8(&t7, &t8, &t9, &t10, &t11, &t12, &t13,
&t14);
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7));
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8));
int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t9));
int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t10));
int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t11));
int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t12));
int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t13));
int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t14));
uint8x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter,
horiz_const);
uint8x8_t d1 = convolve8_8_x(s1, s2, s3, s4, s5, s6, s7, s8, x_filter,
horiz_const);
uint8x8_t d2 = convolve8_8_x(s2, s3, s4, s5, s6, s7, s8, s9, x_filter,
horiz_const);
uint8x8_t d3 = convolve8_8_x(s3, s4, s5, s6, s7, s8, s9, s10, x_filter,
horiz_const);
uint8x8_t d4 = convolve8_8_x(s4, s5, s6, s7, s8, s9, s10, s11, x_filter,
horiz_const);
uint8x8_t d5 = convolve8_8_x(s5, s6, s7, s8, s9, s10, s11, s12,
x_filter, horiz_const);
uint8x8_t d6 = convolve8_8_x(s6, s7, s8, s9, s10, s11, s12, s13,
x_filter, horiz_const);
uint8x8_t d7 = convolve8_8_x(s7, s8, s9, s10, s11, s12, s13, s14,
x_filter, horiz_const);
transpose_elems_inplace_u8_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7);
store_u8_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7);
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;
}
#endif // AOM_ARCH_AARCH64
while (h-- != 0) {
uint8x8_t t0 = vld1_u8(src); // a0 a1 a2 a3 a4 a5 a6 a7
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int width = w;
const uint8_t *s = src + 8;
uint8_t *d = dst;
__builtin_prefetch(d);
do {
uint8x8_t t8 = vld1_u8(s); // a8 a9 a10 a11 a12 a13 a14 a15
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8));
int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8
int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9
int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10
int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11
int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12
int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13
int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14
uint8x8_t d0 = convolve8_8_x(s0, s1, s2, s3, s4, s5, s6, s7, x_filter,
horiz_const);
vst1_u8(d, d0);
s0 = s8;
s += 8;
d += 8;
width -= 8;
} while (width != 0);
src += src_stride;
dst += dst_stride;
}
}
}
static INLINE int16x4_t convolve6_4_y(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 int16x8_t y_filter_0_7) {
const int16x4_t y_filter_0_3 = vget_low_s16(y_filter_0_7);
const int16x4_t y_filter_4_7 = vget_high_s16(y_filter_0_7);
// Filter values at indices 0 and 7 are 0.
int16x4_t sum = vmul_lane_s16(s0, y_filter_0_3, 1);
sum = vmla_lane_s16(sum, s1, y_filter_0_3, 2);
sum = vmla_lane_s16(sum, s2, y_filter_0_3, 3);
sum = vmla_lane_s16(sum, s3, y_filter_4_7, 0);
sum = vmla_lane_s16(sum, s4, y_filter_4_7, 1);
sum = vmla_lane_s16(sum, s5, y_filter_4_7, 2);
return sum;
}
static INLINE uint8x8_t convolve6_8_y(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 y_filters) {
const int16x4_t y_filter_lo = vget_low_s16(y_filters);
const int16x4_t y_filter_hi = vget_high_s16(y_filters);
// Filter values at indices 0 and 7 are 0.
int16x8_t sum = vmulq_lane_s16(s0, y_filter_lo, 1);
sum = vmlaq_lane_s16(sum, s1, y_filter_lo, 2);
sum = vmlaq_lane_s16(sum, s2, y_filter_lo, 3);
sum = vmlaq_lane_s16(sum, s3, y_filter_hi, 0);
sum = vmlaq_lane_s16(sum, s4, y_filter_hi, 1);
sum = vmlaq_lane_s16(sum, s5, y_filter_hi, 2);
// We halved the convolution filter values so -1 from the right shift.
return vqrshrun_n_s16(sum, FILTER_BITS - 1);
}
static INLINE void convolve_y_sr_6tap_neon(const uint8_t *src_ptr,
int src_stride, uint8_t *dst_ptr,
const int dst_stride, int w, int h,
const int16x8_t y_filter) {
if (w <= 4) {
uint8x8_t t0 = load_unaligned_u8_4x1(src_ptr + 0 * src_stride);
uint8x8_t t1 = load_unaligned_u8_4x1(src_ptr + 1 * src_stride);
uint8x8_t t2 = load_unaligned_u8_4x1(src_ptr + 2 * src_stride);
uint8x8_t t3 = load_unaligned_u8_4x1(src_ptr + 3 * src_stride);
uint8x8_t t4 = load_unaligned_u8_4x1(src_ptr + 4 * src_stride);
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t s4 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t4)));
src_ptr += 5 * src_stride;
do {
#if AOM_ARCH_AARCH64
uint8x8_t t5 = load_unaligned_u8_4x1(src_ptr + 0 * src_stride);
uint8x8_t t6 = load_unaligned_u8_4x1(src_ptr + 1 * src_stride);
uint8x8_t t7 = load_unaligned_u8_4x1(src_ptr + 2 * src_stride);
uint8x8_t t8 = load_unaligned_u8_4x1(src_ptr + 3 * src_stride);
int16x4_t s5 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t5)));
int16x4_t s6 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t6)));
int16x4_t s7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t7)));
int16x4_t s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t8)));
int16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter);
int16x4_t d1 = convolve6_4_y(s1, s2, s3, s4, s5, s6, y_filter);
int16x4_t d2 = convolve6_4_y(s2, s3, s4, s5, s6, s7, y_filter);
int16x4_t d3 = convolve6_4_y(s3, s4, s5, s6, s7, s8, y_filter);
// We halved the convolution filter values so -1 from the right shift.
uint8x8_t d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS - 1);
uint8x8_t d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS - 1);
store_u8_4x1(dst_ptr + 0 * dst_stride, d01, 0);
store_u8_4x1(dst_ptr + 1 * dst_stride, d01, 1);
store_u8_4x1(dst_ptr + 2 * dst_stride, d23, 0);
store_u8_4x1(dst_ptr + 3 * dst_stride, d23, 1);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
h -= 4;
#else // !AOM_ARCH_AARCH64
uint8x8_t t5 = load_unaligned_u8_4x1(src_ptr);
int16x4_t s5 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t5)));
int16x4_t d0 = convolve6_4_y(s0, s1, s2, s3, s4, s5, y_filter);
// We halved the convolution filter values so -1 from the right shift.
uint8x8_t d01 =
vqrshrun_n_s16(vcombine_s16(d0, vdup_n_s16(0)), FILTER_BITS - 1);
store_u8_4x1(dst_ptr, d01, 0);
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
src_ptr += src_stride;
dst_ptr += dst_stride;
h--;
#endif // AOM_ARCH_AARCH64
} while (h != 0);
} else {
do {
const uint8_t *s = src_ptr;
uint8_t *d = dst_ptr;
int height = h;
uint8x8_t t0, t1, t2, t3, t4;
load_u8_8x5(s, src_stride, &t0, &t1, &t2, &t3, &t4);
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
s += 5 * src_stride;
do {
#if AOM_ARCH_AARCH64
uint8x8_t t5, t6, t7, t8;
load_u8_8x4(s, src_stride, &t5, &t6, &t7, &t8);
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7));
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8));
uint8x8_t d0 = convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter);
uint8x8_t d1 = convolve6_8_y(s1, s2, s3, s4, s5, s6, y_filter);
uint8x8_t d2 = convolve6_8_y(s2, s3, s4, s5, s6, s7, y_filter);
uint8x8_t d3 = convolve6_8_y(s3, s4, s5, s6, s7, s8, y_filter);
store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
#else // !AOM_ARCH_AARCH64
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
uint8x8_t d0 = convolve6_8_y(s0, s1, s2, s3, s4, s5, y_filter);
vst1_u8(d, d0);
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s += src_stride;
d += dst_stride;
height--;
#endif // AOM_ARCH_AARCH64
} while (height != 0);
src_ptr += 8;
dst_ptr += 8;
w -= 8;
} while (w != 0);
}
}
static INLINE int16x4_t convolve8_4_y(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 int16x8_t filter) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int16x4_t sum = vmul_lane_s16(s0, filter_lo, 0);
sum = vmla_lane_s16(sum, s1, filter_lo, 1);
sum = vmla_lane_s16(sum, s2, filter_lo, 2);
sum = vmla_lane_s16(sum, s3, filter_lo, 3);
sum = vmla_lane_s16(sum, s4, filter_hi, 0);
sum = vmla_lane_s16(sum, s5, filter_hi, 1);
sum = vmla_lane_s16(sum, s6, filter_hi, 2);
sum = vmla_lane_s16(sum, s7, filter_hi, 3);
return sum;
}
static INLINE uint8x8_t convolve8_8_y(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 int16x8_t filter) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int16x8_t sum = vmulq_lane_s16(s0, filter_lo, 0);
sum = vmlaq_lane_s16(sum, s1, filter_lo, 1);
sum = vmlaq_lane_s16(sum, s2, filter_lo, 2);
sum = vmlaq_lane_s16(sum, s3, filter_lo, 3);
sum = vmlaq_lane_s16(sum, s4, filter_hi, 0);
sum = vmlaq_lane_s16(sum, s5, filter_hi, 1);
sum = vmlaq_lane_s16(sum, s6, filter_hi, 2);
sum = vmlaq_lane_s16(sum, s7, filter_hi, 3);
// We halved the convolution filter values so -1 from the right shift.
return vqrshrun_n_s16(sum, FILTER_BITS - 1);
}
static INLINE void convolve_y_sr_8tap_neon(const uint8_t *src_ptr,
int src_stride, uint8_t *dst_ptr,
const int dst_stride, int w, int h,
const int16x8_t y_filter) {
if (w <= 4) {
uint8x8_t t0 = load_unaligned_u8_4x1(src_ptr + 0 * src_stride);
uint8x8_t t1 = load_unaligned_u8_4x1(src_ptr + 1 * src_stride);
uint8x8_t t2 = load_unaligned_u8_4x1(src_ptr + 2 * src_stride);
uint8x8_t t3 = load_unaligned_u8_4x1(src_ptr + 3 * src_stride);
uint8x8_t t4 = load_unaligned_u8_4x1(src_ptr + 4 * src_stride);
uint8x8_t t5 = load_unaligned_u8_4x1(src_ptr + 5 * src_stride);
uint8x8_t t6 = load_unaligned_u8_4x1(src_ptr + 6 * src_stride);
int16x4_t s0 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t0)));
int16x4_t s1 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t1)));
int16x4_t s2 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t2)));
int16x4_t s3 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t3)));
int16x4_t s4 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t4)));
int16x4_t s5 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t5)));
int16x4_t s6 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t6)));
src_ptr += 7 * src_stride;
do {
#if AOM_ARCH_AARCH64
uint8x8_t t7 = load_unaligned_u8_4x1(src_ptr + 0 * src_stride);
uint8x8_t t8 = load_unaligned_u8_4x1(src_ptr + 1 * src_stride);
uint8x8_t t9 = load_unaligned_u8_4x1(src_ptr + 2 * src_stride);
uint8x8_t t10 = load_unaligned_u8_4x1(src_ptr + 3 * src_stride);
int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t7)));
int16x4_t s8 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t8)));
int16x4_t s9 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t9)));
int16x4_t s10 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t10)));
int16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
int16x4_t d1 = convolve8_4_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter);
int16x4_t d2 = convolve8_4_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter);
int16x4_t d3 = convolve8_4_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter);
// We halved the convolution filter values so -1 from the right shift.
uint8x8_t d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS - 1);
uint8x8_t d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS - 1);
store_u8_4x1(dst_ptr + 0 * dst_stride, d01, 0);
store_u8_4x1(dst_ptr + 1 * dst_stride, d01, 1);
store_u8_4x1(dst_ptr + 2 * dst_stride, d23, 0);
store_u8_4x1(dst_ptr + 3 * dst_stride, d23, 1);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
h -= 4;
#else // !AOM_ARCH_AARCH64
uint8x8_t t7 = load_unaligned_u8_4x1(src_ptr);
int16x4_t s7 = vreinterpret_s16_u16(vget_low_u16(vmovl_u8(t7)));
int16x4_t d0 = convolve8_4_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
// We halved the convolution filter values so -1 from the right shift.
uint8x8_t d01 =
vqrshrun_n_s16(vcombine_s16(d0, vdup_n_s16(0)), FILTER_BITS - 1);
store_u8_4x1(dst_ptr, d01, 0);
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
src_ptr += src_stride;
dst_ptr += dst_stride;
h--;
#endif // AOM_ARCH_AARCH64
} while (h != 0);
} else {
do {
const uint8_t *s = src_ptr;
uint8_t *d = dst_ptr;
int height = h;
uint8x8_t t0, t1, t2, t3, t4, t5, t6;
load_u8_8x7(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6);
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
s += 7 * src_stride;
do {
#if AOM_ARCH_AARCH64
uint8x8_t t7, t8, t9, t10;
load_u8_8x4(s, src_stride, &t7, &t8, &t9, &t10);
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7));
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8));
int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t9));
int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t10));
uint8x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
uint8x8_t d1 = convolve8_8_y(s1, s2, s3, s4, s5, s6, s7, s8, y_filter);
uint8x8_t d2 = convolve8_8_y(s2, s3, s4, s5, s6, s7, s8, s9, y_filter);
uint8x8_t d3 = convolve8_8_y(s3, s4, s5, s6, s7, s8, s9, s10, y_filter);
store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
#else // !AOM_ARCH_AARCH64
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(vld1_u8(s)));
uint8x8_t d0 = convolve8_8_y(s0, s1, s2, s3, s4, s5, s6, s7, y_filter);
vst1_u8(d, d0);
s0 = s1;
s1 = s2;
s2 = s3;
s3 = s4;
s4 = s5;
s5 = s6;
s6 = s7;
s += src_stride;
d += dst_stride;
height--;
#endif // AOM_ARCH_AARCH64
} while (height != 0);
src_ptr += 8;
dst_ptr += 8;
w -= 8;
} while (w != 0);
}
}
static INLINE int16x4_t convolve12_4_y(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 int16x4_t s8, const int16x4_t s9,
const int16x4_t s10, const int16x4_t s11,
const int16x8_t y_filter_0_7,
const int16x4_t y_filter_8_11) {
const int16x4_t y_filter_0_3 = vget_low_s16(y_filter_0_7);
const int16x4_t y_filter_4_7 = vget_high_s16(y_filter_0_7);
int16x4_t sum;
sum = vmul_lane_s16(s0, y_filter_0_3, 0);
sum = vmla_lane_s16(sum, s1, y_filter_0_3, 1);
sum = vmla_lane_s16(sum, s2, y_filter_0_3, 2);
sum = vmla_lane_s16(sum, s3, y_filter_0_3, 3);
sum = vmla_lane_s16(sum, s4, y_filter_4_7, 0);
sum = vmla_lane_s16(sum, s7, y_filter_4_7, 3);
sum = vmla_lane_s16(sum, s8, y_filter_8_11, 0);
sum = vmla_lane_s16(sum, s9, y_filter_8_11, 1);
sum = vmla_lane_s16(sum, s10, y_filter_8_11, 2);
sum = vmla_lane_s16(sum, s11, y_filter_8_11, 3);
// Saturating addition is required for the largest filter taps to avoid
// overflow (while staying in 16-bit elements.)
sum = vqadd_s16(sum, vmul_lane_s16(s5, y_filter_4_7, 1));
sum = vqadd_s16(sum, vmul_lane_s16(s6, y_filter_4_7, 2));
return sum;
}
static INLINE uint8x8_t convolve12_8_y(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 int16x8_t s8, const int16x8_t s9,
const int16x8_t s10, const int16x8_t s11,
const int16x8_t y_filter_0_7,
const int16x4_t y_filter_8_11) {
const int16x4_t y_filter_0_3 = vget_low_s16(y_filter_0_7);
const int16x4_t y_filter_4_7 = vget_high_s16(y_filter_0_7);
int16x8_t sum;
sum = vmulq_lane_s16(s0, y_filter_0_3, 0);
sum = vmlaq_lane_s16(sum, s1, y_filter_0_3, 1);
sum = vmlaq_lane_s16(sum, s2, y_filter_0_3, 2);
sum = vmlaq_lane_s16(sum, s3, y_filter_0_3, 3);
sum = vmlaq_lane_s16(sum, s4, y_filter_4_7, 0);
sum = vmlaq_lane_s16(sum, s7, y_filter_4_7, 3);
sum = vmlaq_lane_s16(sum, s8, y_filter_8_11, 0);
sum = vmlaq_lane_s16(sum, s9, y_filter_8_11, 1);
sum = vmlaq_lane_s16(sum, s10, y_filter_8_11, 2);
sum = vmlaq_lane_s16(sum, s11, y_filter_8_11, 3);
// Saturating addition is required for the largest filter taps to avoid
// overflow (while staying in 16-bit elements.)
sum = vqaddq_s16(sum, vmulq_lane_s16(s5, y_filter_4_7, 1));
sum = vqaddq_s16(sum, vmulq_lane_s16(s6, y_filter_4_7, 2));
return vqrshrun_n_s16(sum, FILTER_BITS);
}
static INLINE void convolve_y_sr_12tap_neon(const uint8_t *src_ptr,
int src_stride, uint8_t *dst_ptr,
int dst_stride, int w, int h,
const int16_t *y_filter_ptr) {
const int16x8_t y_filter_0_7 = vld1q_s16(y_filter_ptr);
const int16x4_t y_filter_8_11 = vld1_s16(y_filter_ptr + 8);
if (w <= 4) {
uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10;
load_u8_8x11(src_ptr, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7,
&t8, &t9, &t10);
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t s4 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t4)));
int16x4_t s5 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t5)));
int16x4_t s6 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t6)));
int16x4_t s7 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t7)));
int16x4_t s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t8)));
int16x4_t s9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t9)));
int16x4_t s10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t10)));
src_ptr += 11 * src_stride;
do {
uint8x8_t t11, t12, t13, t14;
load_u8_8x4(src_ptr, src_stride, &t11, &t12, &t13, &t14);
int16x4_t s11 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t11)));
int16x4_t s12 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t12)));
int16x4_t s13 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t13)));
int16x4_t s14 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t14)));
int16x4_t d0 = convolve12_4_y(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10,
s11, y_filter_0_7, y_filter_8_11);
int16x4_t d1 = convolve12_4_y(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10,
s11, s12, y_filter_0_7, y_filter_8_11);
int16x4_t d2 = convolve12_4_y(s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
s12, s13, y_filter_0_7, y_filter_8_11);
int16x4_t d3 = convolve12_4_y(s3, s4, s5, s6, s7, s8, s9, s10, s11, s12,
s13, s14, y_filter_0_7, y_filter_8_11);
uint8x8_t d01 = vqrshrun_n_s16(vcombine_s16(d0, d1), FILTER_BITS);
uint8x8_t d23 = vqrshrun_n_s16(vcombine_s16(d2, d3), FILTER_BITS);
store_u8_4x1(dst_ptr + 0 * dst_stride, d01, 0);
store_u8_4x1(dst_ptr + 1 * dst_stride, d01, 1);
store_u8_4x1(dst_ptr + 2 * dst_stride, d23, 0);
store_u8_4x1(dst_ptr + 3 * dst_stride, d23, 1);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s7 = s11;
s8 = s12;
s9 = s13;
s10 = s14;
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
h -= 4;
} while (h != 0);
} else {
do {
const uint8_t *s = src_ptr;
uint8_t *d = dst_ptr;
int height = h;
uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7, t8, t9, t10;
load_u8_8x11(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7, &t8,
&t9, &t10);
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t7));
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t8));
int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t9));
int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t10));
s += 11 * src_stride;
do {
uint8x8_t t11, t12, t13, t14;
load_u8_8x4(s, src_stride, &t11, &t12, &t13, &t14);
int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t11));
int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t12));
int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t13));
int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t14));
uint8x8_t d0 = convolve12_8_y(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9,
s10, s11, y_filter_0_7, y_filter_8_11);
uint8x8_t d1 = convolve12_8_y(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10,
s11, s12, y_filter_0_7, y_filter_8_11);
uint8x8_t d2 = convolve12_8_y(s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
s12, s13, y_filter_0_7, y_filter_8_11);
uint8x8_t d3 = convolve12_8_y(s3, s4, s5, s6, s7, s8, s9, s10, s11, s12,
s13, s14, y_filter_0_7, y_filter_8_11);
store_u8_8x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s7 = s11;
s8 = s12;
s9 = s13;
s10 = s14;
s += 4 * src_stride;
d += 4 * dst_stride;
height -= 4;
} while (height != 0);
src_ptr += 8;
dst_ptr += 8;
w -= 8;
} while (w != 0);
}
}
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 (w == 2 || h == 2) {
av1_convolve_y_sr_c(src, src_stride, dst, dst_stride, w, h, filter_params_y,
subpel_y_qn);
return;
}
const int y_filter_taps = get_filter_tap(filter_params_y, subpel_y_qn);
const int clamped_y_taps = y_filter_taps < 6 ? 6 : y_filter_taps;
const int vert_offset = clamped_y_taps / 2 - 1;
src -= vert_offset * src_stride;
const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_y, subpel_y_qn & SUBPEL_MASK);
if (y_filter_taps > 8) {
convolve_y_sr_12tap_neon(src, src_stride, dst, dst_stride, w, h,
y_filter_ptr);
return;
}
// Filter values are even so halve to reduce precision requirements.
const int16x8_t y_filter = vshrq_n_s16(vld1q_s16(y_filter_ptr), 1);
if (y_filter_taps < 8) {
convolve_y_sr_6tap_neon(src, src_stride, dst, dst_stride, w, h, y_filter);
} else {
convolve_y_sr_8tap_neon(src, src_stride, dst, dst_stride, w, h, y_filter);
}
}
static INLINE int16x4_t
convolve12_4_2d_h(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 int16x4_t s8,
const int16x4_t s9, const int16x4_t s10, const int16x4_t s11,
const int16x8_t x_filter_0_7, const int16x4_t x_filter_8_11,
const int32x4_t horiz_const) {
const int16x4_t x_filter_0_3 = vget_low_s16(x_filter_0_7);
const int16x4_t x_filter_4_7 = vget_high_s16(x_filter_0_7);
int32x4_t sum = horiz_const;
sum = vmlal_lane_s16(sum, s0, x_filter_0_3, 0);
sum = vmlal_lane_s16(sum, s1, x_filter_0_3, 1);
sum = vmlal_lane_s16(sum, s2, x_filter_0_3, 2);
sum = vmlal_lane_s16(sum, s3, x_filter_0_3, 3);
sum = vmlal_lane_s16(sum, s4, x_filter_4_7, 0);
sum = vmlal_lane_s16(sum, s5, x_filter_4_7, 1);
sum = vmlal_lane_s16(sum, s6, x_filter_4_7, 2);
sum = vmlal_lane_s16(sum, s7, x_filter_4_7, 3);
sum = vmlal_lane_s16(sum, s8, x_filter_8_11, 0);
sum = vmlal_lane_s16(sum, s9, x_filter_8_11, 1);
sum = vmlal_lane_s16(sum, s10, x_filter_8_11, 2);
sum = vmlal_lane_s16(sum, s11, x_filter_8_11, 3);
return vshrn_n_s32(sum, ROUND0_BITS);
}
static INLINE void convolve_2d_sr_horiz_12tap_neon(
const uint8_t *src_ptr, int src_stride, int16_t *dst_ptr,
const int dst_stride, int w, int h, const int16x8_t x_filter_0_7,
const int16x4_t x_filter_8_11) {
const int bd = 8;
// A shim of 1 << (ROUND0_BITS - 1) enables us to use non-rounding shifts -
// which are generally faster than rounding shifts on modern CPUs.
const int32x4_t horiz_const =
vdupq_n_s32((1 << (bd + FILTER_BITS - 1)) + (1 << (ROUND0_BITS - 1)));
#if AOM_ARCH_AARCH64
do {
const uint8_t *s = src_ptr;
int16_t *d = dst_ptr;
int width = w;
uint8x8_t t0, t1, t2, t3;
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s2 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s3 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s5 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s6 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s7 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
load_u8_8x4(s + 8, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s8 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s9 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s10 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
s += 11;
do {
load_u8_8x4(s, src_stride, &t0, &t1, &t2, &t3);
transpose_elems_inplace_u8_8x4(&t0, &t1, &t2, &t3);
int16x4_t s11 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s12 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t1)));
int16x4_t s13 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t2)));
int16x4_t s14 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t3)));
int16x4_t d0 =
convolve12_4_2d_h(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d1 =
convolve12_4_2d_h(s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d2 =
convolve12_4_2d_h(s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13,
x_filter_0_7, x_filter_8_11, horiz_const);
int16x4_t d3 =
convolve12_4_2d_h(s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, s13, s14,
x_filter_0_7, x_filter_8_11, horiz_const);
transpose_elems_inplace_s16_4x4(&d0, &d1, &d2, &d3);
store_s16_4x4(d, dst_stride, d0, d1, d2, d3);
s0 = s4;
s1 = s5;
s2 = s6;
s3 = s7;
s4 = s8;
s5 = s9;
s6 = s10;
s7 = s11;
s8 = s12;
s9 = s13;
s10 = s14;
s += 4;
d += 4;
width -= 4;
} while (width != 0);
src_ptr += 4 * src_stride;
dst_ptr += 4 * dst_stride;
h -= 4;
} while (h > 4);
#endif // AOM_ARCH_AARCH64
do {
const uint8_t *s = src_ptr;
int16_t *d = dst_ptr;
int width = w;
do {
uint8x16_t t0 = vld1q_u8(s);
int16x8_t tt0 = vreinterpretq_s16_u16(vmovl_u8(vget_low_u8(t0)));
int16x8_t tt1 = vreinterpretq_s16_u16(vmovl_u8(vget_high_u8(t0)));
int16x4_t s0 = vget_low_s16(tt0);
int16x4_t s4 = vget_high_s16(tt0);
int16x4_t s8 = vget_low_s16(tt1);
int16x4_t s12 = vget_high_s16(tt1);
int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4
int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5
int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6
int16x4_t s5 = vext_s16(s4, s8, 1); // a5 a6 a7 a8
int16x4_t s6 = vext_s16(s4, s8, 2); // a6 a7 a8 a9
int16x4_t s7 = vext_s16(s4, s8, 3); // a7 a8 a9 a10
int16x4_t s9 = vext_s16(s8, s12, 1); // a9 a10 a11 a12
int16x4_t s10 = vext_s16(s8, s12, 2); // a10 a11 a12 a13
int16x4_t s11 = vext_s16(s8, s12, 3); // a11 a12 a13 a14
int16x4_t d0 =
convolve12_4_2d_h(s0, s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11,
x_filter_0_7, x_filter_8_11, horiz_const);
vst1_s16(d, d0);
s += 4;
d += 4;
width -= 4;
} while (width != 0);
src_ptr += src_stride;
dst_ptr += dst_stride;
} while (--h != 0);
}
static INLINE int16x4_t convolve4_4_2d_h(const int16x4_t s0, const int16x4_t s1,
const int16x4_t s2, const int16x4_t s3,
const int16x4_t filter,
const int16x4_t horiz_const) {
int16x4_t sum = horiz_const;
sum = vmla_lane_s16(sum, s0, filter, 0);
sum = vmla_lane_s16(sum, s1, filter, 1);
sum = vmla_lane_s16(sum, s2, filter, 2);
sum = vmla_lane_s16(sum, s3, filter, 3);
// We halved the convolution filter values so -1 from the right shift.
return vshr_n_s16(sum, ROUND0_BITS - 1);
}
static INLINE int16x8_t convolve8_8_2d_h(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 int16x8_t filter,
const int16x8_t horiz_const) {
const int16x4_t filter_lo = vget_low_s16(filter);
const int16x4_t filter_hi = vget_high_s16(filter);
int16x8_t sum = horiz_const;
sum = vmlaq_lane_s16(sum, s0, filter_lo, 0);
sum = vmlaq_lane_s16(sum, s1, filter_lo, 1);
sum = vmlaq_lane_s16(sum, s2, filter_lo, 2);
sum = vmlaq_lane_s16(sum, s3, filter_lo, 3);
sum = vmlaq_lane_s16(sum, s4, filter_hi, 0);
sum = vmlaq_lane_s16(sum, s5, filter_hi, 1);
sum = vmlaq_lane_s16(sum, s6, filter_hi, 2);
sum = vmlaq_lane_s16(sum, s7, filter_hi, 3);
// We halved the convolution filter values so -1 from the right shift.
return vshrq_n_s16(sum, ROUND0_BITS - 1);
}
static INLINE void convolve_2d_sr_horiz_neon(const uint8_t *src, int src_stride,
int16_t *im_block, int im_stride,
int w, int im_h,
const int16_t *x_filter_ptr) {
const int bd = 8;
const uint8_t *src_ptr = src;
int16_t *dst_ptr = im_block;
int dst_stride = im_stride;
int height = im_h;
if (w <= 4) {
// A shim of 1 << ((ROUND0_BITS - 1) - 1) enables us to use non-rounding
// shifts - which are generally faster than rounding shifts on modern CPUs.
// (The extra -1 is needed because we halved the filter values.)
const int16x4_t horiz_const = vdup_n_s16((1 << (bd + FILTER_BITS - 2)) +
(1 << ((ROUND0_BITS - 1) - 1)));
// 4-tap filters are used for blocks having width <= 4.
// Filter values are even, so halve to reduce intermediate precision reqs.
const int16x4_t x_filter = vshr_n_s16(vld1_s16(x_filter_ptr + 2), 1);
src_ptr += 2;
do {
uint8x8_t t0 = vld1_u8(src_ptr); // a0 a1 a2 a3 a4 a5 a6 a7
int16x4_t s0 = vget_low_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s4 = vget_high_s16(vreinterpretq_s16_u16(vmovl_u8(t0)));
int16x4_t s1 = vext_s16(s0, s4, 1); // a1 a2 a3 a4
int16x4_t s2 = vext_s16(s0, s4, 2); // a2 a3 a4 a5
int16x4_t s3 = vext_s16(s0, s4, 3); // a3 a4 a5 a6
int16x4_t d0 = convolve4_4_2d_h(s0, s1, s2, s3, x_filter, horiz_const);
vst1_s16(dst_ptr, d0);
src_ptr += src_stride;
dst_ptr += dst_stride;
} while (--height != 0);
} else {
// A shim of 1 << ((ROUND0_BITS - 1) - 1) enables us to use non-rounding
// shifts - which are generally faster than rounding shifts on modern CPUs.
// (The extra -1 is needed because we halved the filter values.)
const int16x8_t horiz_const = vdupq_n_s16((1 << (bd + FILTER_BITS - 2)) +
(1 << ((ROUND0_BITS - 1) - 1)));
// Filter values are even, so halve to reduce intermediate precision reqs.
const int16x8_t x_filter = vshrq_n_s16(vld1q_s16(x_filter_ptr), 1);
#if AOM_ARCH_AARCH64
while (height > 8) {
const uint8_t *s = src_ptr;
int16_t *d = dst_ptr;
int width = w;
uint8x8_t t0, t1, t2, t3, t4, t5, t6, t7;
load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s1 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s2 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s3 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s4 = vreinterpretq_s16_u16(vmovl_u8(t4));
int16x8_t s5 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s6 = vreinterpretq_s16_u16(vmovl_u8(t6));
s += 7;
do {
load_u8_8x8(s, src_stride, &t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
transpose_elems_inplace_u8_8x8(&t0, &t1, &t2, &t3, &t4, &t5, &t6, &t7);
int16x8_t s7 = vreinterpretq_s16_u16(vmovl_u8(t0));
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s9 = vreinterpretq_s16_u16(vmovl_u8(t2));
int16x8_t s10 = vreinterpretq_s16_u16(vmovl_u8(t3));
int16x8_t s11 = vreinterpretq_s16_u16(vmovl_u8(t4));
int16x8_t s12 = vreinterpretq_s16_u16(vmovl_u8(t5));
int16x8_t s13 = vreinterpretq_s16_u16(vmovl_u8(t6));
int16x8_t s14 = vreinterpretq_s16_u16(vmovl_u8(t7));
int16x8_t d0 = convolve8_8_2d_h(s0, s1, s2, s3, s4, s5, s6, s7,
x_filter, horiz_const);
int16x8_t d1 = convolve8_8_2d_h(s1, s2, s3, s4, s5, s6, s7, s8,
x_filter, horiz_const);
int16x8_t d2 = convolve8_8_2d_h(s2, s3, s4, s5, s6, s7, s8, s9,
x_filter, horiz_const);
int16x8_t d3 = convolve8_8_2d_h(s3, s4, s5, s6, s7, s8, s9, s10,
x_filter, horiz_const);
int16x8_t d4 = convolve8_8_2d_h(s4, s5, s6, s7, s8, s9, s10, s11,
x_filter, horiz_const);
int16x8_t d5 = convolve8_8_2d_h(s5, s6, s7, s8, s9, s10, s11, s12,
x_filter, horiz_const);
int16x8_t d6 = convolve8_8_2d_h(s6, s7, s8, s9, s10, s11, s12, s13,
x_filter, horiz_const);
int16x8_t d7 = convolve8_8_2d_h(s7, s8, s9, s10, s11, s12, s13, s14,
x_filter, horiz_const);
transpose_elems_inplace_s16_8x8(&d0, &d1, &d2, &d3, &d4, &d5, &d6, &d7);
store_s16_8x8(d, dst_stride, d0, d1, d2, d3, d4, d5, d6, d7);
s0 = s8;
s1 = s9;
s2 = s10;
s3 = s11;
s4 = s12;
s5 = s13;
s6 = s14;
s += 8;
d += 8;
width -= 8;
} while (width != 0);
src_ptr += 8 * src_stride;
dst_ptr += 8 * dst_stride;
height -= 8;
}
#endif // AOM_ARCH_AARCH64
do {
const uint8_t *s = src_ptr;
int16_t *d = dst_ptr;
int width = w;
uint8x8_t t0 = vld1_u8(s); // a0 a1 a2 a3 a4 a5 a6 a7
int16x8_t s0 = vreinterpretq_s16_u16(vmovl_u8(t0));
do {
uint8x8_t t1 = vld1_u8(s + 8); // a8 a9 a10 a11 a12 a13 a14 a15
int16x8_t s8 = vreinterpretq_s16_u16(vmovl_u8(t1));
int16x8_t s1 = vextq_s16(s0, s8, 1); // a1 a2 a3 a4 a5 a6 a7 a8
int16x8_t s2 = vextq_s16(s0, s8, 2); // a2 a3 a4 a5 a6 a7 a8 a9
int16x8_t s3 = vextq_s16(s0, s8, 3); // a3 a4 a5 a6 a7 a8 a9 a10
int16x8_t s4 = vextq_s16(s0, s8, 4); // a4 a5 a6 a7 a8 a9 a10 a11
int16x8_t s5 = vextq_s16(s0, s8, 5); // a5 a6 a7 a8 a9 a10 a11 a12
int16x8_t s6 = vextq_s16(s0, s8, 6); // a6 a7 a8 a9 a10 a11 a12 a13
int16x8_t s7 = vextq_s16(s0, s8, 7); // a7 a8 a9 a10 a11 a12 a13 a14
int16x8_t d0 = convolve8_8_2d_h(s0, s1, s2, s3, s4, s5, s6, s7,
x_filter, horiz_const);
vst1q_s16(d, d0);
s0 = s8;
s += 8;
d += 8;
width -= 8;
} while (width != 0);
src_ptr += src_stride;
dst_ptr += dst_stride;
} 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 (w == 2 || h == 2) {
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;
}
const int y_filter_taps = get_filter_tap(filter_params_y, subpel_y_qn);
const int clamped_y_taps = y_filter_taps < 6 ? 6 : y_filter_taps;
const int im_h = h + clamped_y_taps - 1;
const int im_stride = MAX_SB_SIZE;
const int vert_offset = clamped_y_taps / 2 - 1;
const int horiz_offset = filter_params_x->taps / 2 - 1;
const uint8_t *src_ptr = src - vert_offset * src_stride - horiz_offset;
const int16_t *x_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_x, subpel_x_qn & SUBPEL_MASK);
const int16_t *y_filter_ptr = av1_get_interp_filter_subpel_kernel(
filter_params_y, subpel_y_qn & SUBPEL_MASK);
if (filter_params_x->taps > 8) {
DECLARE_ALIGNED(16, int16_t,
im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE]);
const int16x8_t x_filter_0_7 = vld1q_s16(x_filter_ptr);
const int16x4_t x_filter_8_11 = vld1_s16(x_filter_ptr + 8);
const int16x8_t y_filter_0_7 = vld1q_s16(y_filter_ptr);
const int16x4_t y_filter_8_11 = vld1_s16(y_filter_ptr + 8);
convolve_2d_sr_horiz_12tap_neon(src_ptr, src_stride, im_block, im_stride, w,
im_h, x_filter_0_7, x_filter_8_11);
convolve_2d_sr_vert_12tap_neon(im_block, im_stride, dst, dst_stride, w, h,
y_filter_0_7, y_filter_8_11);
} else {
DECLARE_ALIGNED(16, int16_t,
im_block[(MAX_SB_SIZE + SUBPEL_TAPS - 1) * MAX_SB_SIZE]);
convolve_2d_sr_horiz_neon(src_ptr, src_stride, im_block, im_stride, w, im_h,
x_filter_ptr);
const int16x8_t y_filter = vld1q_s16(y_filter_ptr);
if (clamped_y_taps <= 6) {
convolve_2d_sr_vert_6tap_neon(im_block, im_stride, dst, dst_stride, w, h,
y_filter);
} else {
convolve_2d_sr_vert_8tap_neon(im_block, im_stride, dst, dst_stride, w, h,
y_filter);
}
}
}
void av1_convolve_x_sr_intrabc_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) {
assert(subpel_x_qn == 8);
assert(filter_params_x->taps == 2);
assert((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS);
(void)filter_params_x;
(void)subpel_x_qn;
(void)conv_params;
if (w <= 4) {
do {
uint8x8_t s0_0 = vld1_u8(src);
uint8x8_t s0_1 = vld1_u8(src + 1);
uint8x8_t s1_0 = vld1_u8(src + src_stride);
uint8x8_t s1_1 = vld1_u8(src + src_stride + 1);
uint8x8_t d0 = vrhadd_u8(s0_0, s0_1);
uint8x8_t d1 = vrhadd_u8(s1_0, s1_1);
if (w == 2) {
store_u8_2x1(dst + 0 * dst_stride, d0, 0);
store_u8_2x1(dst + 1 * dst_stride, d1, 0);
} else {
store_u8_4x1(dst + 0 * dst_stride, d0, 0);
store_u8_4x1(dst + 1 * dst_stride, d1, 0);
}
src += 2 * src_stride;
dst += 2 * dst_stride;
h -= 2;
} while (h != 0);
} else if (w == 8) {
do {
uint8x8_t s0_0 = vld1_u8(src);
uint8x8_t s0_1 = vld1_u8(src + 1);
uint8x8_t s1_0 = vld1_u8(src + src_stride);
uint8x8_t s1_1 = vld1_u8(src + src_stride + 1);
uint8x8_t d0 = vrhadd_u8(s0_0, s0_1);
uint8x8_t d1 = vrhadd_u8(s1_0, s1_1);
vst1_u8(dst, d0);
vst1_u8(dst + dst_stride, d1);
src += 2 * src_stride;
dst += 2 * dst_stride;
h -= 2;
} while (h != 0);
} else {
do {
const uint8_t *src_ptr = src;
uint8_t *dst_ptr = dst;
int width = w;
do {
uint8x16_t s0 = vld1q_u8(src_ptr);
uint8x16_t s1 = vld1q_u8(src_ptr + 1);
uint8x16_t d0 = vrhaddq_u8(s0, s1);
vst1q_u8(dst_ptr, d0);
src_ptr += 16;
dst_ptr += 16;
width -= 16;
} while (width != 0);
src += src_stride;
dst += dst_stride;
} while (--h != 0);
}
}
void av1_convolve_y_sr_intrabc_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) {
assert(subpel_y_qn == 8);
assert(filter_params_y->taps == 2);
(void)filter_params_y;
(void)subpel_y_qn;
if (w <= 4) {
do {
uint8x8_t s0 = load_unaligned_u8_4x1(src);
uint8x8_t s1 = load_unaligned_u8_4x1(src + src_stride);
uint8x8_t s2 = load_unaligned_u8_4x1(src + 2 * src_stride);
uint8x8_t d0 = vrhadd_u8(s0, s1);
uint8x8_t d1 = vrhadd_u8(s1, s2);
if (w == 2) {
store_u8_2x1(dst + 0 * dst_stride, d0, 0);
store_u8_2x1(dst + 1 * dst_stride, d1, 0);
} else {
store_u8_4x1(dst + 0 * dst_stride, d0, 0);
store_u8_4x1(dst + 1 * dst_stride, d1, 0);
}
src += 2 * src_stride;
dst += 2 * dst_stride;
h -= 2;
} while (h != 0);
} else if (w == 8) {
do {
uint8x8_t s0 = vld1_u8(src);
uint8x8_t s1 = vld1_u8(src + src_stride);
uint8x8_t s2 = vld1_u8(src + 2 * src_stride);
uint8x8_t d0 = vrhadd_u8(s0, s1);
uint8x8_t d1 = vrhadd_u8(s1, s2);
vst1_u8(dst, d0);
vst1_u8(dst + dst_stride, d1);
src += 2 * src_stride;
dst += 2 * dst_stride;
h -= 2;
} while (h != 0);
} else {
do {
const uint8_t *src_ptr = src;
uint8_t *dst_ptr = dst;
int height = h;
do {
uint8x16_t s0 = vld1q_u8(src_ptr);
uint8x16_t s1 = vld1q_u8(src_ptr + src_stride);
uint8x16_t d0 = vrhaddq_u8(s0, s1);
vst1q_u8(dst_ptr, d0);
src_ptr += src_stride;
dst_ptr += dst_stride;
} while (--height != 0);
src += 16;
dst += 16;
w -= 16;
} while (w != 0);
}
}
void av1_convolve_2d_sr_intrabc_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) {
assert(subpel_x_qn == 8);
assert(subpel_y_qn == 8);
assert(filter_params_x->taps == 2 && filter_params_y->taps == 2);
assert((conv_params->round_0 + conv_params->round_1) == 2 * FILTER_BITS);
(void)filter_params_x;
(void)subpel_x_qn;
(void)filter_params_y;
(void)subpel_y_qn;
(void)conv_params;
uint16_t im_block[(MAX_SB_SIZE + MAX_FILTER_TAP - 1) * MAX_SB_SIZE];
int im_h = h + 1;
int im_stride = w;
assert(w <= MAX_SB_SIZE && h <= MAX_SB_SIZE);
uint16_t *im = im_block;
// Horizontal filter.
if (w <= 4) {
do {
uint8x8_t s0 = vld1_u8(src);
uint8x8_t s1 = vld1_u8(src + 1);
uint16x4_t sum = vget_low_u16(vaddl_u8(s0, s1));
// Safe to store the whole vector, the im buffer is big enough.
vst1_u16(im, sum);
src += src_stride;
im += im_stride;
} while (--im_h != 0);
} else {
do {
const uint8_t *src_ptr = src;
uint16_t *im_ptr = im;
int width = w;
do {
uint8x8_t s0 = vld1_u8(src_ptr);
uint8x8_t s1 = vld1_u8(src_ptr + 1);
uint16x8_t sum = vaddl_u8(s0, s1);
vst1q_u16(im_ptr, sum);
src_ptr += 8;
im_ptr += 8;
width -= 8;
} while (width != 0);
src += src_stride;
im += im_stride;
} while (--im_h != 0);
}
im = im_block;
// Vertical filter.
if (w <= 4) {
do {
uint16x4_t s0 = vld1_u16(im);
uint16x4_t s1 = vld1_u16(im + im_stride);
uint16x4_t s2 = vld1_u16(im + 2 * im_stride);
uint16x4_t sum0 = vadd_u16(s0, s1);
uint16x4_t sum1 = vadd_u16(s1, s2);
uint8x8_t d01 = vqrshrn_n_u16(vcombine_u16(sum0, sum1), 2);
if (w == 2) {
store_u8_2x1(dst + 0 * dst_stride, d01, 0);
store_u8_2x1(dst + 1 * dst_stride, d01, 2);
} else {
store_u8_4x1(dst + 0 * dst_stride, d01, 0);
store_u8_4x1(dst + 1 * dst_stride, d01, 1);
}
im += 2 * im_stride;
dst += 2 * dst_stride;
h -= 2;
} while (h != 0);
} else {
do {
uint16_t *im_ptr = im;
uint8_t *dst_ptr = dst;
int height = h;
do {
uint16x8_t s0 = vld1q_u16(im_ptr);
uint16x8_t s1 = vld1q_u16(im_ptr + im_stride);
uint16x8_t sum = vaddq_u16(s0, s1);
uint8x8_t d0 = vqrshrn_n_u16(sum, 2);
vst1_u8(dst_ptr, d0);
im_ptr += im_stride;
dst_ptr += dst_stride;
} while (--height != 0);
im += 8;
dst += 8;
w -= 8;
} while (w != 0);
}
}