Google Git
Sign in
aomedia / aom / refs/heads/main / . / aom_dsp / arm / intrapred_neon.c
blob: be636385b241b4dc7ac3e669acc2017b5cab0954 [file] [log] [blame] [edit]
/*
* Copyright (c) 2016, Alliance for Open Media. All rights reserved.
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <arm_neon.h>
#include <assert.h>
#include <stdint.h>
#include "config/aom_config.h"
#include "config/aom_dsp_rtcd.h"
#include "config/av1_rtcd.h"
#include "aom/aom_integer.h"
#include "aom_dsp/arm/mem_neon.h"
#include "aom_dsp/arm/reinterpret_neon.h"
#include "aom_dsp/arm/sum_neon.h"
#include "aom_dsp/arm/transpose_neon.h"
#include "aom_dsp/intrapred_common.h"
//------------------------------------------------------------------------------
// DC 4x4
static inline uint16x8_t dc_load_sum_4(const uint8_t *in) {
const uint8x8_t a = load_u8_4x1(in);
const uint16x4_t p0 = vpaddl_u8(a);
const uint16x4_t p1 = vpadd_u16(p0, p0);
return vcombine_u16(p1, vdup_n_u16(0));
}
static inline void dc_store_4xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x8_t dc) {
for (int i = 0; i < h; ++i) {
store_u8_4x1(dst + i * stride, dc);
}
}
void aom_dc_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_4(above);
const uint16x8_t sum_left = dc_load_sum_4(left);
const uint16x8_t sum = vaddq_u16(sum_left, sum_top);
const uint8x8_t dc0 = vrshrn_n_u16(sum, 3);
dc_store_4xh(dst, stride, 4, vdup_lane_u8(dc0, 0));
}
void aom_dc_left_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_left = dc_load_sum_4(left);
const uint8x8_t dc0 = vrshrn_n_u16(sum_left, 2);
(void)above;
dc_store_4xh(dst, stride, 4, vdup_lane_u8(dc0, 0));
}
void aom_dc_top_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_4(above);
const uint8x8_t dc0 = vrshrn_n_u16(sum_top, 2);
(void)left;
dc_store_4xh(dst, stride, 4, vdup_lane_u8(dc0, 0));
}
void aom_dc_128_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t dc0 = vdup_n_u8(0x80);
(void)above;
(void)left;
dc_store_4xh(dst, stride, 4, dc0);
}
//------------------------------------------------------------------------------
// DC 8x8
static inline uint16x8_t dc_load_sum_8(const uint8_t *in) {
// This isn't used in the case where we want to load both above and left
// vectors, since we want to avoid performing the reduction twice.
const uint8x8_t a = vld1_u8(in);
const uint16x4_t p0 = vpaddl_u8(a);
const uint16x4_t p1 = vpadd_u16(p0, p0);
const uint16x4_t p2 = vpadd_u16(p1, p1);
return vcombine_u16(p2, vdup_n_u16(0));
}
static inline uint16x8_t horizontal_add_and_broadcast_u16x8(uint16x8_t a) {
#if AOM_ARCH_AARCH64
// On AArch64 we could also use vdupq_n_u16(vaddvq_u16(a)) here to save an
// instruction, however the addv instruction is usually slightly more
// expensive than a pairwise addition, so the need for immediately
// broadcasting the result again seems to negate any benefit.
const uint16x8_t b = vpaddq_u16(a, a);
const uint16x8_t c = vpaddq_u16(b, b);
return vpaddq_u16(c, c);
#else
const uint16x4_t b = vadd_u16(vget_low_u16(a), vget_high_u16(a));
const uint16x4_t c = vpadd_u16(b, b);
const uint16x4_t d = vpadd_u16(c, c);
return vcombine_u16(d, d);
#endif
}
static inline void dc_store_8xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x8_t dc) {
for (int i = 0; i < h; ++i) {
vst1_u8(dst + i * stride, dc);
}
}
void aom_dc_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t sum_top = vld1_u8(above);
const uint8x8_t sum_left = vld1_u8(left);
uint16x8_t sum = vaddl_u8(sum_left, sum_top);
sum = horizontal_add_and_broadcast_u16x8(sum);
const uint8x8_t dc0 = vrshrn_n_u16(sum, 4);
dc_store_8xh(dst, stride, 8, vdup_lane_u8(dc0, 0));
}
void aom_dc_left_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_left = dc_load_sum_8(left);
const uint8x8_t dc0 = vrshrn_n_u16(sum_left, 3);
(void)above;
dc_store_8xh(dst, stride, 8, vdup_lane_u8(dc0, 0));
}
void aom_dc_top_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_8(above);
const uint8x8_t dc0 = vrshrn_n_u16(sum_top, 3);
(void)left;
dc_store_8xh(dst, stride, 8, vdup_lane_u8(dc0, 0));
}
void aom_dc_128_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t dc0 = vdup_n_u8(0x80);
(void)above;
(void)left;
dc_store_8xh(dst, stride, 8, dc0);
}
//------------------------------------------------------------------------------
// DC 16x16
static inline uint16x8_t dc_load_partial_sum_16(const uint8_t *in) {
const uint8x16_t a = vld1q_u8(in);
// delay the remainder of the reduction until
// horizontal_add_and_broadcast_u16x8, since we want to do it once rather
// than twice in the case we are loading both above and left.
return vpaddlq_u8(a);
}
static inline uint16x8_t dc_load_sum_16(const uint8_t *in) {
return horizontal_add_and_broadcast_u16x8(dc_load_partial_sum_16(in));
}
static inline void dc_store_16xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t dc) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + i * stride, dc);
}
}
void aom_dc_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_partial_sum_16(above);
const uint16x8_t sum_left = dc_load_partial_sum_16(left);
uint16x8_t sum = vaddq_u16(sum_left, sum_top);
sum = horizontal_add_and_broadcast_u16x8(sum);
const uint8x8_t dc0 = vrshrn_n_u16(sum, 5);
dc_store_16xh(dst, stride, 16, vdupq_lane_u8(dc0, 0));
}
void aom_dc_left_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_left = dc_load_sum_16(left);
const uint8x8_t dc0 = vrshrn_n_u16(sum_left, 4);
(void)above;
dc_store_16xh(dst, stride, 16, vdupq_lane_u8(dc0, 0));
}
void aom_dc_top_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_16(above);
const uint8x8_t dc0 = vrshrn_n_u16(sum_top, 4);
(void)left;
dc_store_16xh(dst, stride, 16, vdupq_lane_u8(dc0, 0));
}
void aom_dc_128_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint8x16_t dc0 = vdupq_n_u8(0x80);
(void)above;
(void)left;
dc_store_16xh(dst, stride, 16, dc0);
}
//------------------------------------------------------------------------------
// DC 32x32
static inline uint16x8_t dc_load_partial_sum_32(const uint8_t *in) {
const uint8x16_t a0 = vld1q_u8(in);
const uint8x16_t a1 = vld1q_u8(in + 16);
// delay the remainder of the reduction until
// horizontal_add_and_broadcast_u16x8, since we want to do it once rather
// than twice in the case we are loading both above and left.
return vpadalq_u8(vpaddlq_u8(a0), a1);
}
static inline uint16x8_t dc_load_sum_32(const uint8_t *in) {
return horizontal_add_and_broadcast_u16x8(dc_load_partial_sum_32(in));
}
static inline void dc_store_32xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t dc) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + i * stride, dc);
vst1q_u8(dst + i * stride + 16, dc);
}
}
void aom_dc_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_partial_sum_32(above);
const uint16x8_t sum_left = dc_load_partial_sum_32(left);
uint16x8_t sum = vaddq_u16(sum_left, sum_top);
sum = horizontal_add_and_broadcast_u16x8(sum);
const uint8x8_t dc0 = vrshrn_n_u16(sum, 6);
dc_store_32xh(dst, stride, 32, vdupq_lane_u8(dc0, 0));
}
void aom_dc_left_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_left = dc_load_sum_32(left);
const uint8x8_t dc0 = vrshrn_n_u16(sum_left, 5);
(void)above;
dc_store_32xh(dst, stride, 32, vdupq_lane_u8(dc0, 0));
}
void aom_dc_top_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_32(above);
const uint8x8_t dc0 = vrshrn_n_u16(sum_top, 5);
(void)left;
dc_store_32xh(dst, stride, 32, vdupq_lane_u8(dc0, 0));
}
void aom_dc_128_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint8x16_t dc0 = vdupq_n_u8(0x80);
(void)above;
(void)left;
dc_store_32xh(dst, stride, 32, dc0);
}
//------------------------------------------------------------------------------
// DC 64x64
static inline uint16x8_t dc_load_partial_sum_64(const uint8_t *in) {
const uint8x16_t a0 = vld1q_u8(in);
const uint8x16_t a1 = vld1q_u8(in + 16);
const uint8x16_t a2 = vld1q_u8(in + 32);
const uint8x16_t a3 = vld1q_u8(in + 48);
const uint16x8_t p01 = vpadalq_u8(vpaddlq_u8(a0), a1);
const uint16x8_t p23 = vpadalq_u8(vpaddlq_u8(a2), a3);
// delay the remainder of the reduction until
// horizontal_add_and_broadcast_u16x8, since we want to do it once rather
// than twice in the case we are loading both above and left.
return vaddq_u16(p01, p23);
}
static inline uint16x8_t dc_load_sum_64(const uint8_t *in) {
return horizontal_add_and_broadcast_u16x8(dc_load_partial_sum_64(in));
}
static inline void dc_store_64xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t dc) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + i * stride, dc);
vst1q_u8(dst + i * stride + 16, dc);
vst1q_u8(dst + i * stride + 32, dc);
vst1q_u8(dst + i * stride + 48, dc);
}
}
void aom_dc_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint16x8_t sum_top = dc_load_partial_sum_64(above);
const uint16x8_t sum_left = dc_load_partial_sum_64(left);
uint16x8_t sum = vaddq_u16(sum_left, sum_top);
sum = horizontal_add_and_broadcast_u16x8(sum);
const uint8x8_t dc0 = vrshrn_n_u16(sum, 7);
dc_store_64xh(dst, stride, 64, vdupq_lane_u8(dc0, 0));
}
void aom_dc_left_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_left = dc_load_sum_64(left);
const uint8x8_t dc0 = vrshrn_n_u16(sum_left, 6);
(void)above;
dc_store_64xh(dst, stride, 64, vdupq_lane_u8(dc0, 0));
}
void aom_dc_top_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint16x8_t sum_top = dc_load_sum_64(above);
const uint8x8_t dc0 = vrshrn_n_u16(sum_top, 6);
(void)left;
dc_store_64xh(dst, stride, 64, vdupq_lane_u8(dc0, 0));
}
void aom_dc_128_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above,
const uint8_t *left) {
const uint8x16_t dc0 = vdupq_n_u8(0x80);
(void)above;
(void)left;
dc_store_64xh(dst, stride, 64, dc0);
}
//------------------------------------------------------------------------------
// DC rectangular cases
#define DC_MULTIPLIER_1X2 0x5556
#define DC_MULTIPLIER_1X4 0x3334
#define DC_SHIFT2 16
static inline int divide_using_multiply_shift(int num, int shift1,
int multiplier, int shift2) {
const int interm = num >> shift1;
return interm * multiplier >> shift2;
}
static inline int calculate_dc_from_sum(int bw, int bh, uint32_t sum,
int shift1, int multiplier) {
const int expected_dc = divide_using_multiply_shift(
sum + ((bw + bh) >> 1), shift1, multiplier, DC_SHIFT2);
assert(expected_dc < (1 << 8));
return expected_dc;
}
#undef DC_SHIFT2
void aom_dc_predictor_4x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x8_t a = load_u8_4x1(above);
uint8x8_t l = vld1_u8(left);
uint32_t sum = horizontal_add_u16x8(vaddl_u8(a, l));
uint32_t dc = calculate_dc_from_sum(4, 8, sum, 2, DC_MULTIPLIER_1X2);
dc_store_4xh(dst, stride, 8, vdup_n_u8(dc));
}
void aom_dc_predictor_8x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x8_t a = vld1_u8(above);
uint8x8_t l = load_u8_4x1(left);
uint32_t sum = horizontal_add_u16x8(vaddl_u8(a, l));
uint32_t dc = calculate_dc_from_sum(8, 4, sum, 2, DC_MULTIPLIER_1X2);
dc_store_8xh(dst, stride, 4, vdup_n_u8(dc));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_4x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x8_t a = load_u8_4x1(above);
uint8x16_t l = vld1q_u8(left);
uint16x8_t sum_al = vaddw_u8(vpaddlq_u8(l), a);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(4, 16, sum, 2, DC_MULTIPLIER_1X4);
dc_store_4xh(dst, stride, 16, vdup_n_u8(dc));
}
void aom_dc_predictor_16x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x16_t a = vld1q_u8(above);
uint8x8_t l = load_u8_4x1(left);
uint16x8_t sum_al = vaddw_u8(vpaddlq_u8(a), l);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(16, 4, sum, 2, DC_MULTIPLIER_1X4);
dc_store_16xh(dst, stride, 4, vdupq_n_u8(dc));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_8x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x8_t a = vld1_u8(above);
uint8x16_t l = vld1q_u8(left);
uint16x8_t sum_al = vaddw_u8(vpaddlq_u8(l), a);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(8, 16, sum, 3, DC_MULTIPLIER_1X2);
dc_store_8xh(dst, stride, 16, vdup_n_u8(dc));
}
void aom_dc_predictor_16x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x16_t a = vld1q_u8(above);
uint8x8_t l = vld1_u8(left);
uint16x8_t sum_al = vaddw_u8(vpaddlq_u8(a), l);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(16, 8, sum, 3, DC_MULTIPLIER_1X2);
dc_store_16xh(dst, stride, 8, vdupq_n_u8(dc));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_8x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint8x8_t a = vld1_u8(above);
uint16x8_t sum_left = dc_load_partial_sum_32(left);
uint16x8_t sum_al = vaddw_u8(sum_left, a);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(8, 32, sum, 3, DC_MULTIPLIER_1X4);
dc_store_8xh(dst, stride, 32, vdup_n_u8(dc));
}
void aom_dc_predictor_32x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_top = dc_load_partial_sum_32(above);
uint8x8_t l = vld1_u8(left);
uint16x8_t sum_al = vaddw_u8(sum_top, l);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(32, 8, sum, 3, DC_MULTIPLIER_1X4);
dc_store_32xh(dst, stride, 8, vdupq_n_u8(dc));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_16x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_16(above);
uint16x8_t sum_left = dc_load_partial_sum_32(left);
uint16x8_t sum_al = vaddq_u16(sum_left, sum_above);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(16, 32, sum, 4, DC_MULTIPLIER_1X2);
dc_store_16xh(dst, stride, 32, vdupq_n_u8(dc));
}
void aom_dc_predictor_32x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_32(above);
uint16x8_t sum_left = dc_load_partial_sum_16(left);
uint16x8_t sum_al = vaddq_u16(sum_left, sum_above);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(32, 16, sum, 4, DC_MULTIPLIER_1X2);
dc_store_32xh(dst, stride, 16, vdupq_n_u8(dc));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_16x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_16(above);
uint16x8_t sum_left = dc_load_partial_sum_64(left);
uint16x8_t sum_al = vaddq_u16(sum_left, sum_above);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(16, 64, sum, 4, DC_MULTIPLIER_1X4);
dc_store_16xh(dst, stride, 64, vdupq_n_u8(dc));
}
void aom_dc_predictor_64x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_64(above);
uint16x8_t sum_left = dc_load_partial_sum_16(left);
uint16x8_t sum_al = vaddq_u16(sum_above, sum_left);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(64, 16, sum, 4, DC_MULTIPLIER_1X4);
dc_store_64xh(dst, stride, 16, vdupq_n_u8(dc));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_dc_predictor_32x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_32(above);
uint16x8_t sum_left = dc_load_partial_sum_64(left);
uint16x8_t sum_al = vaddq_u16(sum_above, sum_left);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(32, 64, sum, 5, DC_MULTIPLIER_1X2);
dc_store_32xh(dst, stride, 64, vdupq_n_u8(dc));
}
void aom_dc_predictor_64x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
uint16x8_t sum_above = dc_load_partial_sum_64(above);
uint16x8_t sum_left = dc_load_partial_sum_32(left);
uint16x8_t sum_al = vaddq_u16(sum_above, sum_left);
uint32_t sum = horizontal_add_u16x8(sum_al);
uint32_t dc = calculate_dc_from_sum(64, 32, sum, 5, DC_MULTIPLIER_1X2);
dc_store_64xh(dst, stride, 32, vdupq_n_u8(dc));
}
#undef DC_MULTIPLIER_1X2
#undef DC_MULTIPLIER_1X4
#define DC_PREDICTOR_128(w, h, q) \
void aom_dc_128_predictor_##w##x##h##_neon(uint8_t *dst, ptrdiff_t stride, \
const uint8_t *above, \
const uint8_t *left) { \
(void)above; \
(void)left; \
dc_store_##w##xh(dst, stride, (h), vdup##q##_n_u8(0x80)); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
DC_PREDICTOR_128(4, 16, )
DC_PREDICTOR_128(8, 32, )
DC_PREDICTOR_128(16, 4, q)
DC_PREDICTOR_128(16, 64, q)
DC_PREDICTOR_128(32, 8, q)
DC_PREDICTOR_128(64, 16, q)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
DC_PREDICTOR_128(4, 8, )
DC_PREDICTOR_128(8, 4, )
DC_PREDICTOR_128(8, 16, )
DC_PREDICTOR_128(16, 8, q)
DC_PREDICTOR_128(16, 32, q)
DC_PREDICTOR_128(32, 16, q)
DC_PREDICTOR_128(32, 64, q)
DC_PREDICTOR_128(64, 32, q)
#undef DC_PREDICTOR_128
#define DC_PREDICTOR_LEFT(w, h, shift, q) \
void aom_dc_left_predictor_##w##x##h##_neon(uint8_t *dst, ptrdiff_t stride, \
const uint8_t *above, \
const uint8_t *left) { \
(void)above; \
const uint16x8_t sum = dc_load_sum_##h(left); \
const uint8x8_t dc0 = vrshrn_n_u16(sum, (shift)); \
dc_store_##w##xh(dst, stride, (h), vdup##q##_lane_u8(dc0, 0)); \
}
DC_PREDICTOR_LEFT(4, 8, 3, )
DC_PREDICTOR_LEFT(8, 4, 2, )
DC_PREDICTOR_LEFT(8, 16, 4, )
DC_PREDICTOR_LEFT(16, 8, 3, q)
DC_PREDICTOR_LEFT(16, 32, 5, q)
DC_PREDICTOR_LEFT(32, 16, 4, q)
DC_PREDICTOR_LEFT(32, 64, 6, q)
DC_PREDICTOR_LEFT(64, 32, 5, q)
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
DC_PREDICTOR_LEFT(4, 16, 4, )
DC_PREDICTOR_LEFT(16, 4, 2, q)
DC_PREDICTOR_LEFT(8, 32, 5, )
DC_PREDICTOR_LEFT(32, 8, 3, q)
DC_PREDICTOR_LEFT(16, 64, 6, q)
DC_PREDICTOR_LEFT(64, 16, 4, q)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
#undef DC_PREDICTOR_LEFT
#define DC_PREDICTOR_TOP(w, h, shift, q) \
void aom_dc_top_predictor_##w##x##h##_neon(uint8_t *dst, ptrdiff_t stride, \
const uint8_t *above, \
const uint8_t *left) { \
(void)left; \
const uint16x8_t sum = dc_load_sum_##w(above); \
const uint8x8_t dc0 = vrshrn_n_u16(sum, (shift)); \
dc_store_##w##xh(dst, stride, (h), vdup##q##_lane_u8(dc0, 0)); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
DC_PREDICTOR_TOP(8, 32, 3, )
DC_PREDICTOR_TOP(4, 16, 2, )
DC_PREDICTOR_TOP(16, 4, 4, q)
DC_PREDICTOR_TOP(16, 64, 4, q)
DC_PREDICTOR_TOP(32, 8, 5, q)
DC_PREDICTOR_TOP(64, 16, 6, q)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
DC_PREDICTOR_TOP(4, 8, 2, )
DC_PREDICTOR_TOP(8, 4, 3, )
DC_PREDICTOR_TOP(8, 16, 3, )
DC_PREDICTOR_TOP(16, 8, 4, q)
DC_PREDICTOR_TOP(16, 32, 4, q)
DC_PREDICTOR_TOP(32, 16, 5, q)
DC_PREDICTOR_TOP(32, 64, 5, q)
DC_PREDICTOR_TOP(64, 32, 6, q)
#undef DC_PREDICTOR_TOP
// -----------------------------------------------------------------------------
static inline void v_store_4xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x8_t d0) {
for (int i = 0; i < h; ++i) {
store_u8_4x1(dst + i * stride, d0);
}
}
static inline void v_store_8xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x8_t d0) {
for (int i = 0; i < h; ++i) {
vst1_u8(dst + i * stride, d0);
}
}
static inline void v_store_16xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t d0) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + i * stride, d0);
}
}
static inline void v_store_32xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t d0, uint8x16_t d1) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + 0, d0);
vst1q_u8(dst + 16, d1);
dst += stride;
}
}
static inline void v_store_64xh(uint8_t *dst, ptrdiff_t stride, int h,
uint8x16_t d0, uint8x16_t d1, uint8x16_t d2,
uint8x16_t d3) {
for (int i = 0; i < h; ++i) {
vst1q_u8(dst + 0, d0);
vst1q_u8(dst + 16, d1);
vst1q_u8(dst + 32, d2);
vst1q_u8(dst + 48, d3);
dst += stride;
}
}
void aom_v_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_4xh(dst, stride, 4, load_u8_4x1(above));
}
void aom_v_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_8xh(dst, stride, 8, vld1_u8(above));
}
void aom_v_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_16xh(dst, stride, 16, vld1q_u8(above));
}
void aom_v_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
(void)left;
v_store_32xh(dst, stride, 32, d0, d1);
}
void aom_v_predictor_4x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_4xh(dst, stride, 8, load_u8_4x1(above));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_4x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_4xh(dst, stride, 16, load_u8_4x1(above));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_8x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_8xh(dst, stride, 4, vld1_u8(above));
}
void aom_v_predictor_8x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_8xh(dst, stride, 16, vld1_u8(above));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_8x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_8xh(dst, stride, 32, vld1_u8(above));
}
void aom_v_predictor_16x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_16xh(dst, stride, 4, vld1q_u8(above));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_16x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_16xh(dst, stride, 8, vld1q_u8(above));
}
void aom_v_predictor_16x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_16xh(dst, stride, 32, vld1q_u8(above));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_16x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)left;
v_store_16xh(dst, stride, 64, vld1q_u8(above));
}
void aom_v_predictor_32x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
(void)left;
v_store_32xh(dst, stride, 8, d0, d1);
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_32x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
(void)left;
v_store_32xh(dst, stride, 16, d0, d1);
}
void aom_v_predictor_32x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
(void)left;
v_store_32xh(dst, stride, 64, d0, d1);
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_64x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
const uint8x16_t d2 = vld1q_u8(above + 32);
const uint8x16_t d3 = vld1q_u8(above + 48);
(void)left;
v_store_64xh(dst, stride, 16, d0, d1, d2, d3);
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_v_predictor_64x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
const uint8x16_t d2 = vld1q_u8(above + 32);
const uint8x16_t d3 = vld1q_u8(above + 48);
(void)left;
v_store_64xh(dst, stride, 32, d0, d1, d2, d3);
}
void aom_v_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(above);
const uint8x16_t d1 = vld1q_u8(above + 16);
const uint8x16_t d2 = vld1q_u8(above + 32);
const uint8x16_t d3 = vld1q_u8(above + 48);
(void)left;
v_store_64xh(dst, stride, 64, d0, d1, d2, d3);
}
// -----------------------------------------------------------------------------
static inline void h_store_4x8(uint8_t *dst, ptrdiff_t stride, uint8x8_t d0) {
store_u8_4x1(dst + 0 * stride, vdup_lane_u8(d0, 0));
store_u8_4x1(dst + 1 * stride, vdup_lane_u8(d0, 1));
store_u8_4x1(dst + 2 * stride, vdup_lane_u8(d0, 2));
store_u8_4x1(dst + 3 * stride, vdup_lane_u8(d0, 3));
store_u8_4x1(dst + 4 * stride, vdup_lane_u8(d0, 4));
store_u8_4x1(dst + 5 * stride, vdup_lane_u8(d0, 5));
store_u8_4x1(dst + 6 * stride, vdup_lane_u8(d0, 6));
store_u8_4x1(dst + 7 * stride, vdup_lane_u8(d0, 7));
}
static inline void h_store_8x8(uint8_t *dst, ptrdiff_t stride, uint8x8_t d0) {
vst1_u8(dst + 0 * stride, vdup_lane_u8(d0, 0));
vst1_u8(dst + 1 * stride, vdup_lane_u8(d0, 1));
vst1_u8(dst + 2 * stride, vdup_lane_u8(d0, 2));
vst1_u8(dst + 3 * stride, vdup_lane_u8(d0, 3));
vst1_u8(dst + 4 * stride, vdup_lane_u8(d0, 4));
vst1_u8(dst + 5 * stride, vdup_lane_u8(d0, 5));
vst1_u8(dst + 6 * stride, vdup_lane_u8(d0, 6));
vst1_u8(dst + 7 * stride, vdup_lane_u8(d0, 7));
}
static inline void h_store_16x8(uint8_t *dst, ptrdiff_t stride, uint8x8_t d0) {
vst1q_u8(dst + 0 * stride, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 1 * stride, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 2 * stride, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 3 * stride, vdupq_lane_u8(d0, 3));
vst1q_u8(dst + 4 * stride, vdupq_lane_u8(d0, 4));
vst1q_u8(dst + 5 * stride, vdupq_lane_u8(d0, 5));
vst1q_u8(dst + 6 * stride, vdupq_lane_u8(d0, 6));
vst1q_u8(dst + 7 * stride, vdupq_lane_u8(d0, 7));
}
static inline void h_store_32x8(uint8_t *dst, ptrdiff_t stride, uint8x8_t d0) {
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 0));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 1));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 2));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 3));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 3));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 4));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 4));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 5));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 5));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 6));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 6));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 7));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 7));
}
static inline void h_store_64x8(uint8_t *dst, ptrdiff_t stride, uint8x8_t d0) {
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 0));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 1));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 2));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 3));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 3));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 3));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 3));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 4));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 4));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 4));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 4));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 5));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 5));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 5));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 5));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 6));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 6));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 6));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 6));
dst += stride;
vst1q_u8(dst + 0, vdupq_lane_u8(d0, 7));
vst1q_u8(dst + 16, vdupq_lane_u8(d0, 7));
vst1q_u8(dst + 32, vdupq_lane_u8(d0, 7));
vst1q_u8(dst + 48, vdupq_lane_u8(d0, 7));
}
void aom_h_predictor_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = load_u8_4x1(left);
(void)above;
store_u8_4x1(dst + 0 * stride, vdup_lane_u8(d0, 0));
store_u8_4x1(dst + 1 * stride, vdup_lane_u8(d0, 1));
store_u8_4x1(dst + 2 * stride, vdup_lane_u8(d0, 2));
store_u8_4x1(dst + 3 * stride, vdup_lane_u8(d0, 3));
}
void aom_h_predictor_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = vld1_u8(left);
(void)above;
h_store_8x8(dst, stride, d0);
}
void aom_h_predictor_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
(void)above;
h_store_16x8(dst, stride, vget_low_u8(d0));
h_store_16x8(dst + 8 * stride, stride, vget_high_u8(d0));
}
void aom_h_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
const uint8x16_t d1 = vld1q_u8(left + 16);
(void)above;
h_store_32x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_32x8(dst + 8 * stride, stride, vget_high_u8(d0));
h_store_32x8(dst + 16 * stride, stride, vget_low_u8(d1));
h_store_32x8(dst + 24 * stride, stride, vget_high_u8(d1));
}
void aom_h_predictor_4x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = vld1_u8(left);
(void)above;
h_store_4x8(dst, stride, d0);
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_4x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
(void)above;
h_store_4x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_4x8(dst + 8 * stride, stride, vget_high_u8(d0));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_8x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = load_u8_4x1(left);
(void)above;
vst1_u8(dst + 0 * stride, vdup_lane_u8(d0, 0));
vst1_u8(dst + 1 * stride, vdup_lane_u8(d0, 1));
vst1_u8(dst + 2 * stride, vdup_lane_u8(d0, 2));
vst1_u8(dst + 3 * stride, vdup_lane_u8(d0, 3));
}
void aom_h_predictor_8x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
(void)above;
h_store_8x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_8x8(dst + 8 * stride, stride, vget_high_u8(d0));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_8x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
const uint8x16_t d1 = vld1q_u8(left + 16);
(void)above;
h_store_8x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_8x8(dst + 8 * stride, stride, vget_high_u8(d0));
h_store_8x8(dst + 16 * stride, stride, vget_low_u8(d1));
h_store_8x8(dst + 24 * stride, stride, vget_high_u8(d1));
}
void aom_h_predictor_16x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = load_u8_4x1(left);
(void)above;
vst1q_u8(dst + 0 * stride, vdupq_lane_u8(d0, 0));
vst1q_u8(dst + 1 * stride, vdupq_lane_u8(d0, 1));
vst1q_u8(dst + 2 * stride, vdupq_lane_u8(d0, 2));
vst1q_u8(dst + 3 * stride, vdupq_lane_u8(d0, 3));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_16x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = vld1_u8(left);
(void)above;
h_store_16x8(dst, stride, d0);
}
void aom_h_predictor_16x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
const uint8x16_t d1 = vld1q_u8(left + 16);
(void)above;
h_store_16x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_16x8(dst + 8 * stride, stride, vget_high_u8(d0));
h_store_16x8(dst + 16 * stride, stride, vget_low_u8(d1));
h_store_16x8(dst + 24 * stride, stride, vget_high_u8(d1));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_16x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
const uint8x16_t d1 = vld1q_u8(left + 16);
const uint8x16_t d2 = vld1q_u8(left + 32);
const uint8x16_t d3 = vld1q_u8(left + 48);
(void)above;
h_store_16x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_16x8(dst + 8 * stride, stride, vget_high_u8(d0));
h_store_16x8(dst + 16 * stride, stride, vget_low_u8(d1));
h_store_16x8(dst + 24 * stride, stride, vget_high_u8(d1));
h_store_16x8(dst + 32 * stride, stride, vget_low_u8(d2));
h_store_16x8(dst + 40 * stride, stride, vget_high_u8(d2));
h_store_16x8(dst + 48 * stride, stride, vget_low_u8(d3));
h_store_16x8(dst + 56 * stride, stride, vget_high_u8(d3));
}
void aom_h_predictor_32x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x8_t d0 = vld1_u8(left);
(void)above;
h_store_32x8(dst, stride, d0);
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_32x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
(void)above;
h_store_32x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_32x8(dst + 8 * stride, stride, vget_high_u8(d0));
}
void aom_h_predictor_32x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left + 0);
const uint8x16_t d1 = vld1q_u8(left + 16);
const uint8x16_t d2 = vld1q_u8(left + 32);
const uint8x16_t d3 = vld1q_u8(left + 48);
(void)above;
h_store_32x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_32x8(dst + 8 * stride, stride, vget_high_u8(d0));
h_store_32x8(dst + 16 * stride, stride, vget_low_u8(d1));
h_store_32x8(dst + 24 * stride, stride, vget_high_u8(d1));
h_store_32x8(dst + 32 * stride, stride, vget_low_u8(d2));
h_store_32x8(dst + 40 * stride, stride, vget_high_u8(d2));
h_store_32x8(dst + 48 * stride, stride, vget_low_u8(d3));
h_store_32x8(dst + 56 * stride, stride, vget_high_u8(d3));
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_64x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
const uint8x16_t d0 = vld1q_u8(left);
(void)above;
h_store_64x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_64x8(dst + 8 * stride, stride, vget_high_u8(d0));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
void aom_h_predictor_64x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)above;
for (int i = 0; i < 2; ++i) {
const uint8x16_t d0 = vld1q_u8(left);
h_store_64x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_64x8(dst + 8 * stride, stride, vget_high_u8(d0));
left += 16;
dst += 16 * stride;
}
}
void aom_h_predictor_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left) {
(void)above;
for (int i = 0; i < 4; ++i) {
const uint8x16_t d0 = vld1q_u8(left);
h_store_64x8(dst + 0 * stride, stride, vget_low_u8(d0));
h_store_64x8(dst + 8 * stride, stride, vget_high_u8(d0));
left += 16;
dst += 16 * stride;
}
}
/* ---------------------P R E D I C T I O N Z 1--------------------------- */
// Low bit depth functions
static DECLARE_ALIGNED(32, const uint8_t, BaseMask[33][32]) = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff },
};
static AOM_FORCE_INLINE void dr_prediction_z1_WxH_internal_neon_small(
int W, int H, uint8x8_t *dst, const uint8_t *above, int upsample_above,
int dx) {
const int frac_bits = 6 - upsample_above;
const int max_base_x = ((W + H) - 1) << upsample_above;
assert(dx > 0);
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
const uint8x8_t a_mbase_x = vdup_n_u8(above[max_base_x]);
int x = dx;
for (int r = 0; r < H; r++) {
int base = x >> frac_bits;
int base_max_diff = (max_base_x - base) >> upsample_above;
if (base_max_diff <= 0) {
for (int i = r; i < H; ++i) {
dst[i] = a_mbase_x; // save 4 values
}
return;
}
if (base_max_diff > W) base_max_diff = W;
uint8x8x2_t a01_128;
uint16x8_t shift;
if (upsample_above) {
a01_128 = vld2_u8(above + base);
shift = vdupq_n_u16(x & 0x1f); // ((x << upsample_above) & 0x3f) >> 1
} else {
a01_128.val[0] = vld1_u8(above + base);
a01_128.val[1] = vld1_u8(above + base + 1);
shift = vdupq_n_u16((x & 0x3f) >> 1);
}
uint16x8_t diff = vsubl_u8(a01_128.val[1], a01_128.val[0]);
uint16x8_t a32 = vshll_n_u8(a01_128.val[0], 5);
uint16x8_t res = vmlaq_u16(a32, diff, shift);
uint8x8_t mask = vld1_u8(BaseMask[base_max_diff]);
dst[r] = vbsl_u8(mask, vrshrn_n_u16(res, 5), a_mbase_x);
x += dx;
}
}
static void dr_prediction_z1_4xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, int upsample_above,
int dx) {
uint8x8_t dstvec[16];
dr_prediction_z1_WxH_internal_neon_small(4, H, dstvec, above, upsample_above,
dx);
for (int i = 0; i < H; i++) {
vst1_lane_u32((uint32_t *)(dst + stride * i),
vreinterpret_u32_u8(dstvec[i]), 0);
}
}
static void dr_prediction_z1_8xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, int upsample_above,
int dx) {
uint8x8_t dstvec[32];
dr_prediction_z1_WxH_internal_neon_small(8, H, dstvec, above, upsample_above,
dx);
for (int i = 0; i < H; i++) {
vst1_u8(dst + stride * i, dstvec[i]);
}
}
static AOM_FORCE_INLINE void dr_prediction_z1_WxH_internal_neon_large(
int W, int H, uint8x16_t *dst, const uint8_t *above, int dx) {
// Here upsample_above is 0 by design of av1_use_intra_edge_upsample defined
// in av1/common/reconintra.h.
const int frac_bits = 6;
const int max_base_x = (W + H) - 1;
assert(dx > 0);
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
const uint8x16_t a_mbase_x = vdupq_n_u8(above[max_base_x]);
int x = dx;
for (int r = 0; r < H; r++) {
int base = x >> frac_bits;
int base_max_diff = max_base_x - base;
if (base_max_diff <= 0) {
for (int i = r; i < H; ++i) {
dst[i] = a_mbase_x; // save 4 values
}
return;
}
if (base_max_diff > W) base_max_diff = W;
uint8x16_t a0_128 = vld1q_u8(above + base);
uint8x16_t a1_128 = vld1q_u8(above + base + 1);
uint16x8_t shift = vdupq_n_u16((x & 0x3f) >> 1);
uint16x8_t diff_lo = vsubl_u8(vget_low_u8(a1_128), vget_low_u8(a0_128));
uint16x8_t diff_hi = vsubl_u8(vget_high_u8(a1_128), vget_high_u8(a0_128));
uint16x8_t a32_lo = vshll_n_u8(vget_low_u8(a0_128), 5);
uint16x8_t a32_hi = vshll_n_u8(vget_high_u8(a0_128), 5);
uint16x8_t res_lo = vmlaq_u16(a32_lo, diff_lo, shift);
uint16x8_t res_hi = vmlaq_u16(a32_hi, diff_hi, shift);
uint8x16_t v_temp =
vcombine_u8(vrshrn_n_u16(res_lo, 5), vrshrn_n_u16(res_hi, 5));
uint8x16_t mask = vld1q_u8(BaseMask[base_max_diff]);
dst[r] = vbslq_u8(mask, v_temp, a_mbase_x);
x += dx;
}
}
static void dr_prediction_z1_16xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, int dx) {
uint8x16_t dstvec[64];
dr_prediction_z1_WxH_internal_neon_large(16, H, dstvec, above, dx);
for (int i = 0; i < H; i++) {
vst1q_u8(dst + stride * i, dstvec[i]);
}
}
static AOM_FORCE_INLINE void dr_prediction_z1_32xH_internal_neon(
int H, uint8x16x2_t *dstvec, const uint8_t *above, int dx) {
// Here upsample_above is 0 by design of av1_use_intra_edge_upsample defined
// in av1/common/reconintra.h.
const int frac_bits = 6;
const int max_base_x = (32 + H) - 1;
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
const uint8x16_t a_mbase_x = vdupq_n_u8(above[max_base_x]);
int x = dx;
for (int r = 0; r < H; r++) {
int base = x >> frac_bits;
int base_max_diff = (max_base_x - base);
if (base_max_diff <= 0) {
for (int i = r; i < H; ++i) {
dstvec[i].val[0] = a_mbase_x; // save 32 values
dstvec[i].val[1] = a_mbase_x;
}
return;
}
if (base_max_diff > 32) base_max_diff = 32;
uint16x8_t shift = vdupq_n_u16((x & 0x3f) >> 1);
uint8x16_t res16[2];
for (int j = 0, jj = 0; j < 32; j += 16, jj++) {
int mdiff = base_max_diff - j;
if (mdiff <= 0) {
res16[jj] = a_mbase_x;
} else {
uint8x16_t a0_128 = vld1q_u8(above + base + j);
uint8x16_t a1_128 = vld1q_u8(above + base + j + 1);
uint16x8_t diff_lo = vsubl_u8(vget_low_u8(a1_128), vget_low_u8(a0_128));
uint16x8_t diff_hi =
vsubl_u8(vget_high_u8(a1_128), vget_high_u8(a0_128));
uint16x8_t a32_lo = vshll_n_u8(vget_low_u8(a0_128), 5);
uint16x8_t a32_hi = vshll_n_u8(vget_high_u8(a0_128), 5);
uint16x8_t res_lo = vmlaq_u16(a32_lo, diff_lo, shift);
uint16x8_t res_hi = vmlaq_u16(a32_hi, diff_hi, shift);
res16[jj] =
vcombine_u8(vrshrn_n_u16(res_lo, 5), vrshrn_n_u16(res_hi, 5));
}
}
uint8x16_t mask_lo = vld1q_u8(BaseMask[base_max_diff]);
uint8x16_t mask_hi = vld1q_u8(BaseMask[base_max_diff] + 16);
dstvec[r].val[0] = vbslq_u8(mask_lo, res16[0], a_mbase_x);
dstvec[r].val[1] = vbslq_u8(mask_hi, res16[1], a_mbase_x);
x += dx;
}
}
static void dr_prediction_z1_32xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, int dx) {
uint8x16x2_t dstvec[64];
dr_prediction_z1_32xH_internal_neon(H, dstvec, above, dx);
for (int i = 0; i < H; i++) {
vst1q_u8(dst + stride * i, dstvec[i].val[0]);
vst1q_u8(dst + stride * i + 16, dstvec[i].val[1]);
}
}
// clang-format off
static const uint8_t kLoadMaxShuffles[] = {
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15, 15,
7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15, 15,
6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15, 15,
5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15, 15,
4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15, 15,
3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15, 15,
2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15, 15,
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 15,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
};
// clang-format on
static inline uint8x16_t z1_load_masked_neon(const uint8_t *ptr,
int shuffle_idx) {
uint8x16_t shuffle = vld1q_u8(&kLoadMaxShuffles[16 * shuffle_idx]);
uint8x16_t src = vld1q_u8(ptr);
#if AOM_ARCH_AARCH64
return vqtbl1q_u8(src, shuffle);
#else
uint8x8x2_t src2 = { { vget_low_u8(src), vget_high_u8(src) } };
uint8x8_t lo = vtbl2_u8(src2, vget_low_u8(shuffle));
uint8x8_t hi = vtbl2_u8(src2, vget_high_u8(shuffle));
return vcombine_u8(lo, hi);
#endif
}
static void dr_prediction_z1_64xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, int dx) {
const int frac_bits = 6;
const int max_base_x = (64 + H) - 1;
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
const uint8x16_t a_mbase_x = vdupq_n_u8(above[max_base_x]);
int x = dx;
for (int r = 0; r < H; r++, dst += stride) {
int base = x >> frac_bits;
if (base >= max_base_x) {
for (int i = r; i < H; ++i) {
vst1q_u8(dst, a_mbase_x);
vst1q_u8(dst + 16, a_mbase_x);
vst1q_u8(dst + 32, a_mbase_x);
vst1q_u8(dst + 48, a_mbase_x);
dst += stride;
}
return;
}
uint16x8_t shift = vdupq_n_u16((x & 0x3f) >> 1);
for (int j = 0; j < 64; j += 16) {
if (base + j >= max_base_x) {
vst1q_u8(dst + j, a_mbase_x);
} else {
uint8x16_t a0_128;
uint8x16_t a1_128;
if (base + j + 15 >= max_base_x) {
int shuffle_idx = max_base_x - base - j;
a0_128 = z1_load_masked_neon(above + (max_base_x - 15), shuffle_idx);
} else {
a0_128 = vld1q_u8(above + base + j);
}
if (base + j + 16 >= max_base_x) {
int shuffle_idx = max_base_x - base - j - 1;
a1_128 = z1_load_masked_neon(above + (max_base_x - 15), shuffle_idx);
} else {
a1_128 = vld1q_u8(above + base + j + 1);
}
uint16x8_t diff_lo = vsubl_u8(vget_low_u8(a1_128), vget_low_u8(a0_128));
uint16x8_t diff_hi =
vsubl_u8(vget_high_u8(a1_128), vget_high_u8(a0_128));
uint16x8_t a32_lo = vshll_n_u8(vget_low_u8(a0_128), 5);
uint16x8_t a32_hi = vshll_n_u8(vget_high_u8(a0_128), 5);
uint16x8_t res_lo = vmlaq_u16(a32_lo, diff_lo, shift);
uint16x8_t res_hi = vmlaq_u16(a32_hi, diff_hi, shift);
vst1q_u8(dst + j,
vcombine_u8(vrshrn_n_u16(res_lo, 5), vrshrn_n_u16(res_hi, 5)));
}
}
x += dx;
}
}
// Directional prediction, zone 1: 0 < angle < 90
void av1_dr_prediction_z1_neon(uint8_t *dst, ptrdiff_t stride, int bw, int bh,
const uint8_t *above, const uint8_t *left,
int upsample_above, int dx, int dy) {
(void)left;
(void)dy;
switch (bw) {
case 4:
dr_prediction_z1_4xH_neon(bh, dst, stride, above, upsample_above, dx);
break;
case 8:
dr_prediction_z1_8xH_neon(bh, dst, stride, above, upsample_above, dx);
break;
case 16: dr_prediction_z1_16xH_neon(bh, dst, stride, above, dx); break;
case 32: dr_prediction_z1_32xH_neon(bh, dst, stride, above, dx); break;
case 64: dr_prediction_z1_64xH_neon(bh, dst, stride, above, dx); break;
default: break;
}
}
/* ---------------------P R E D I C T I O N Z 2--------------------------- */
#if !AOM_ARCH_AARCH64
static DECLARE_ALIGNED(16, const uint8_t, LoadMaskz2[4][16]) = {
{ 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0, 0, 0, 0, 0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0,
0, 0, 0 },
{ 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
0xff, 0xff, 0xff, 0xff }
};
#endif // !AOM_ARCH_AARCH64
static AOM_FORCE_INLINE void dr_prediction_z2_4xH_above_neon(
const uint8_t *above, int upsample_above, int dx, int base_x, int y,
uint8x8_t *a0_x, uint8x8_t *a1_x, uint16x4_t *shift0) {
const int x = -y * dx;
if (upsample_above) {
// Cannot use LD2 here since we only want to load eight bytes, but LD2 can
// only load either 16 or 32.
uint8x8_t v_tmp = vld1_u8(above + base_x);
*a0_x = vuzp_u8(v_tmp, vdup_n_u8(0)).val[0];
*a1_x = vuzp_u8(v_tmp, vdup_n_u8(0)).val[1];
*shift0 = vdup_n_u16(x & 0x1f); // ((x << upsample_above) & 0x3f) >> 1
} else {
*a0_x = load_unaligned_u8_4x1(above + base_x);
*a1_x = load_unaligned_u8_4x1(above + base_x + 1);
*shift0 = vdup_n_u16((x & 0x3f) >> 1);
}
}
static AOM_FORCE_INLINE void dr_prediction_z2_4xH_left_neon(
#if AOM_ARCH_AARCH64
uint8x16x2_t left_vals,
#else
const uint8_t *left,
#endif
int upsample_left, int dy, int r, int frac_bits_y, uint16x4_t *a0_y,
uint16x4_t *a1_y, uint16x4_t *shift1) {
int16x4_t dy64 = vdup_n_s16(dy);
int16x4_t v_1234 = vcreate_s16(0x0004000300020001);
int16x4_t v_frac_bits_y = vdup_n_s16(-frac_bits_y);
int16x4_t v_r6 = vdup_n_s16(r << 6);
int16x4_t y_c64 = vmls_s16(v_r6, v_1234, dy64);
int16x4_t base_y_c64 = vshl_s16(y_c64, v_frac_bits_y);
#if AOM_ARCH_AARCH64
uint8x8_t left_idx0 =
vreinterpret_u8_s16(vadd_s16(base_y_c64, vdup_n_s16(2))); // [0, 16]
uint8x8_t left_idx1 =
vreinterpret_u8_s16(vadd_s16(base_y_c64, vdup_n_s16(3))); // [1, 17]
*a0_y = vreinterpret_u16_u8(vqtbl2_u8(left_vals, left_idx0));
*a1_y = vreinterpret_u16_u8(vqtbl2_u8(left_vals, left_idx1));
#else // !AOM_ARCH_AARCH64
DECLARE_ALIGNED(32, int16_t, base_y_c[4]);
vst1_s16(base_y_c, base_y_c64);
uint8x8_t a0_y_u8 = vdup_n_u8(0);
a0_y_u8 = vld1_lane_u8(left + base_y_c[0], a0_y_u8, 0);
a0_y_u8 = vld1_lane_u8(left + base_y_c[1], a0_y_u8, 2);
a0_y_u8 = vld1_lane_u8(left + base_y_c[2], a0_y_u8, 4);
a0_y_u8 = vld1_lane_u8(left + base_y_c[3], a0_y_u8, 6);
base_y_c64 = vadd_s16(base_y_c64, vdup_n_s16(1));
vst1_s16(base_y_c, base_y_c64);
uint8x8_t a1_y_u8 = vdup_n_u8(0);
a1_y_u8 = vld1_lane_u8(left + base_y_c[0], a1_y_u8, 0);
a1_y_u8 = vld1_lane_u8(left + base_y_c[1], a1_y_u8, 2);
a1_y_u8 = vld1_lane_u8(left + base_y_c[2], a1_y_u8, 4);
a1_y_u8 = vld1_lane_u8(left + base_y_c[3], a1_y_u8, 6);
*a0_y = vreinterpret_u16_u8(a0_y_u8);
*a1_y = vreinterpret_u16_u8(a1_y_u8);
#endif // AOM_ARCH_AARCH64
if (upsample_left) {
*shift1 = vand_u16(vreinterpret_u16_s16(y_c64),
vdup_n_u16(0x1f)); // ((y << upsample_left) & 0x3f) >> 1
} else {
*shift1 =
vand_u16(vshr_n_u16(vreinterpret_u16_s16(y_c64), 1), vdup_n_u16(0x1f));
}
}
static AOM_FORCE_INLINE uint8x8_t dr_prediction_z2_8xH_above_neon(
const uint8_t *above, int upsample_above, int dx, int base_x, int y) {
const int x = -y * dx;
uint16x8_t shift0;
uint8x8_t a0_x0;
uint8x8_t a1_x0;
if (upsample_above) {
uint8x8x2_t v_tmp = vld2_u8(above + base_x);
a0_x0 = v_tmp.val[0];
a1_x0 = v_tmp.val[1];
shift0 = vdupq_n_u16(x & 0x1f); // ((x << upsample_above) & 0x3f) >> 1
} else {
a0_x0 = vld1_u8(above + base_x);
a1_x0 = vld1_u8(above + base_x + 1);
shift0 = vdupq_n_u16((x & 0x3f) >> 1);
}
uint16x8_t diff0 = vsubl_u8(a1_x0, a0_x0); // a[x+1] - a[x]
uint16x8_t a32 = vshll_n_u8(a0_x0, 5); // a[x] * 32
uint16x8_t res = vmlaq_u16(a32, diff0, shift0);
return vrshrn_n_u16(res, 5);
}
static AOM_FORCE_INLINE uint8x8_t dr_prediction_z2_8xH_left_neon(
#if AOM_ARCH_AARCH64
uint8x16x3_t left_vals,
#else
const uint8_t *left,
#endif
int upsample_left, int dy, int r, int frac_bits_y) {
int16x8_t v_r6 = vdupq_n_s16(r << 6);
int16x8_t dy128 = vdupq_n_s16(dy);
int16x8_t v_frac_bits_y = vdupq_n_s16(-frac_bits_y);
uint16x8_t c1234 = vcombine_u16(vcreate_u16(0x0004000300020001),
vcreate_u16(0x0008000700060005));
int16x8_t y_c128 = vmlsq_s16(v_r6, vreinterpretq_s16_u16(c1234), dy128);
int16x8_t base_y_c128 = vshlq_s16(y_c128, v_frac_bits_y);
#if AOM_ARCH_AARCH64
uint8x16_t left_idx0 =
vreinterpretq_u8_s16(vaddq_s16(base_y_c128, vdupq_n_s16(2))); // [0, 33]
uint8x16_t left_idx1 =
vreinterpretq_u8_s16(vaddq_s16(base_y_c128, vdupq_n_s16(3))); // [1, 34]
uint8x16_t left_idx01 = vuzp1q_u8(left_idx0, left_idx1);
uint8x16_t a01_x = vqtbl3q_u8(left_vals, left_idx01);
uint8x8_t a0_x1 = vget_low_u8(a01_x);
uint8x8_t a1_x1 = vget_high_u8(a01_x);
#else // !AOM_ARCH_AARCH64
uint8x8_t a0_x1 = load_u8_gather_s16_x8(left, base_y_c128);
uint8x8_t a1_x1 = load_u8_gather_s16_x8(left + 1, base_y_c128);
#endif // AOM_ARCH_AARCH64
uint16x8_t shift1;
if (upsample_left) {
shift1 =
vandq_u16(vreinterpretq_u16_s16(y_c128),
vdupq_n_u16(0x1f)); // ((y << upsample_left) & 0x3f) >> 1
} else {
shift1 = vshrq_n_u16(
vandq_u16(vreinterpretq_u16_s16(y_c128), vdupq_n_u16(0x3f)), 1);
}
uint16x8_t diff1 = vsubl_u8(a1_x1, a0_x1);
uint16x8_t a32 = vshll_n_u8(a0_x1, 5);
uint16x8_t res = vmlaq_u16(a32, diff1, shift1);
return vrshrn_n_u16(res, 5);
}
static AOM_FORCE_INLINE uint8x16_t dr_prediction_z2_WxH_above_neon(
const uint8_t *above, int dx, int base_x, int y, int j) {
const int x = -y * dx;
const uint8x16_t a0_x128 = vld1q_u8(above + base_x + j);
const uint8x16_t a1_x128 = vld1q_u8(above + base_x + j + 1);
const uint16x8_t shift = vdupq_n_u16((x & 0x3f) >> 1);
// a[x+1] - a[x]
uint16x8_t diff0 = vsubl_u8(vget_low_u8(a1_x128), vget_low_u8(a0_x128));
uint16x8_t diff1 = vsubl_u8(vget_high_u8(a1_x128), vget_high_u8(a0_x128));
// a[x] * 32
uint16x8_t a32_0 = vshll_n_u8(vget_low_u8(a0_x128), 5);
uint16x8_t a32_1 = vshll_n_u8(vget_high_u8(a0_x128), 5);
uint16x8_t res0 = vmlaq_u16(a32_0, diff0, shift);
uint16x8_t res1 = vmlaq_u16(a32_1, diff1, shift);
return vcombine_u8(vrshrn_n_u16(res0, 5), vrshrn_n_u16(res1, 5));
}
static AOM_FORCE_INLINE uint8x16_t dr_prediction_z2_WxH_left_neon(
#if AOM_ARCH_AARCH64
uint8x16x4_t left_vals0, uint8x16x4_t left_vals1,
#else
const uint8_t *left,
#endif
int dy, int r, int j) {
// here upsample_above and upsample_left are 0 by design of
// av1_use_intra_edge_upsample
int16x8_t dy256 = vdupq_n_s16(dy);
uint16x8_t j256 = vdupq_n_u16(j);
uint16x8x2_t c1234 = { { vcombine_u16(vcreate_u16(0x0004000300020001),
vcreate_u16(0x0008000700060005)),
vcombine_u16(vcreate_u16(0x000C000B000A0009),
vcreate_u16(0x0010000F000E000D)) } };
int16x8_t v_r6 = vdupq_n_s16(r << 6);
int16x8_t c256_0 = vreinterpretq_s16_u16(vaddq_u16(j256, c1234.val[0]));
int16x8_t c256_1 = vreinterpretq_s16_u16(vaddq_u16(j256, c1234.val[1]));
int16x8_t y_c256_lo = vmlsq_s16(v_r6, c256_0, dy256);
int16x8_t y_c256_hi = vmlsq_s16(v_r6, c256_1, dy256);
int16x8_t base_y_c256_lo = vshrq_n_s16(y_c256_lo, 6);
int16x8_t base_y_c256_hi = vshrq_n_s16(y_c256_hi, 6);
#if !AOM_ARCH_AARCH64
int16_t min_y = vgetq_lane_s16(base_y_c256_hi, 7);
int16_t max_y = vgetq_lane_s16(base_y_c256_lo, 0);
int16_t offset_diff = max_y - min_y;
uint8x8_t a0_y0;
uint8x8_t a0_y1;
uint8x8_t a1_y0;
uint8x8_t a1_y1;
if (offset_diff < 16) {
// Avoid gathers where the data we want is close together in memory.
// We don't need this for AArch64 since we can already use TBL to cover the
// full range of possible values.
assert(offset_diff >= 0);
int16x8_t min_y256 = vdupq_lane_s16(vget_high_s16(base_y_c256_hi), 3);
int16x8x2_t base_y_offset;
base_y_offset.val[0] = vsubq_s16(base_y_c256_lo, min_y256);
base_y_offset.val[1] = vsubq_s16(base_y_c256_hi, min_y256);
int8x16_t base_y_offset128 = vcombine_s8(vqmovn_s16(base_y_offset.val[0]),
vqmovn_s16(base_y_offset.val[1]));
uint8x16_t v_loadmaskz2 = vld1q_u8(LoadMaskz2[offset_diff / 4]);
uint8x16_t a0_y128 = vld1q_u8(left + min_y);
uint8x16_t a1_y128 = vld1q_u8(left + min_y + 1);
a0_y128 = vandq_u8(a0_y128, v_loadmaskz2);
a1_y128 = vandq_u8(a1_y128, v_loadmaskz2);
uint8x8_t v_index_low = vget_low_u8(vreinterpretq_u8_s8(base_y_offset128));
uint8x8_t v_index_high =
vget_high_u8(vreinterpretq_u8_s8(base_y_offset128));
uint8x8x2_t v_tmp, v_res;
v_tmp.val[0] = vget_low_u8(a0_y128);
v_tmp.val[1] = vget_high_u8(a0_y128);
v_res.val[0] = vtbl2_u8(v_tmp, v_index_low);
v_res.val[1] = vtbl2_u8(v_tmp, v_index_high);
a0_y128 = vcombine_u8(v_res.val[0], v_res.val[1]);
v_tmp.val[0] = vget_low_u8(a1_y128);
v_tmp.val[1] = vget_high_u8(a1_y128);
v_res.val[0] = vtbl2_u8(v_tmp, v_index_low);
v_res.val[1] = vtbl2_u8(v_tmp, v_index_high);
a1_y128 = vcombine_u8(v_res.val[0], v_res.val[1]);
a0_y0 = vget_low_u8(a0_y128);
a0_y1 = vget_high_u8(a0_y128);
a1_y0 = vget_low_u8(a1_y128);
a1_y1 = vget_high_u8(a1_y128);
} else {
a0_y0 = load_u8_gather_s16_x8(left, base_y_c256_lo);
a0_y1 = load_u8_gather_s16_x8(left, base_y_c256_hi);
a1_y0 = load_u8_gather_s16_x8(left + 1, base_y_c256_lo);
a1_y1 = load_u8_gather_s16_x8(left + 1, base_y_c256_hi);
}
#else
// Values in left_idx{0,1} range from 0 through 63 inclusive.
uint8x16_t left_idx0 =
vreinterpretq_u8_s16(vaddq_s16(base_y_c256_lo, vdupq_n_s16(1)));
uint8x16_t left_idx1 =
vreinterpretq_u8_s16(vaddq_s16(base_y_c256_hi, vdupq_n_s16(1)));
uint8x16_t left_idx01 = vuzp1q_u8(left_idx0, left_idx1);
uint8x16_t a0_y01 = vqtbl4q_u8(left_vals0, left_idx01);
uint8x16_t a1_y01 = vqtbl4q_u8(left_vals1, left_idx01);
uint8x8_t a0_y0 = vget_low_u8(a0_y01);
uint8x8_t a0_y1 = vget_high_u8(a0_y01);
uint8x8_t a1_y0 = vget_low_u8(a1_y01);
uint8x8_t a1_y1 = vget_high_u8(a1_y01);
#endif // !AOM_ARCH_AARCH64
uint16x8_t shifty_lo = vshrq_n_u16(
vandq_u16(vreinterpretq_u16_s16(y_c256_lo), vdupq_n_u16(0x3f)), 1);
uint16x8_t shifty_hi = vshrq_n_u16(
vandq_u16(vreinterpretq_u16_s16(y_c256_hi), vdupq_n_u16(0x3f)), 1);
// a[x+1] - a[x]
uint16x8_t diff_lo = vsubl_u8(a1_y0, a0_y0);
uint16x8_t diff_hi = vsubl_u8(a1_y1, a0_y1);
// a[x] * 32 + 16
uint16x8_t a32_lo = vshll_n_u8(a0_y0, 5);
uint16x8_t a32_hi = vshll_n_u8(a0_y1, 5);
uint16x8_t res0 = vmlaq_u16(a32_lo, diff_lo, shifty_lo);
uint16x8_t res1 = vmlaq_u16(a32_hi, diff_hi, shifty_hi);
return vcombine_u8(vrshrn_n_u16(res0, 5), vrshrn_n_u16(res1, 5));
}
static void dr_prediction_z2_4xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left,
int upsample_above, int upsample_left,
int dx, int dy) {
const int min_base_x = -(1 << upsample_above);
const int frac_bits_x = 6 - upsample_above;
const int frac_bits_y = 6 - upsample_left;
assert(dx > 0);
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
#if AOM_ARCH_AARCH64
// Use ext rather than loading left + 14 directly to avoid over-read.
const uint8x16_t left_m2 = vld1q_u8(left - 2);
const uint8x16_t left_0 = vld1q_u8(left);
const uint8x16_t left_14 = vextq_u8(left_0, left_0, 14);
const uint8x16x2_t left_vals = { { left_m2, left_14 } };
#define LEFT left_vals
#else // !AOM_ARCH_AARCH64
#define LEFT left
#endif // AOM_ARCH_AARCH64
for (int r = 0; r < H; r++) {
int y = r + 1;
int base_x = (-y * dx) >> frac_bits_x;
const int base_min_diff =
(min_base_x - ((-y * dx) >> frac_bits_x) + upsample_above) >>
upsample_above;
if (base_min_diff <= 0) {
uint8x8_t a0_x_u8, a1_x_u8;
uint16x4_t shift0;
dr_prediction_z2_4xH_above_neon(above, upsample_above, dx, base_x, y,
&a0_x_u8, &a1_x_u8, &shift0);
uint8x8_t a0_x = a0_x_u8;
uint8x8_t a1_x = a1_x_u8;
uint16x8_t diff = vsubl_u8(a1_x, a0_x); // a[x+1] - a[x]
uint16x8_t a32 = vshll_n_u8(a0_x, 5);
uint16x8_t res =
vmlaq_u16(a32, diff, vcombine_u16(shift0, vdup_n_u16(0)));
uint8x8_t resx = vrshrn_n_u16(res, 5);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(resx), 0);
} else if (base_min_diff < 4) {
uint8x8_t a0_x_u8, a1_x_u8;
uint16x4_t shift0;
dr_prediction_z2_4xH_above_neon(above, upsample_above, dx, base_x, y,
&a0_x_u8, &a1_x_u8, &shift0);
uint16x8_t a0_x = vmovl_u8(a0_x_u8);
uint16x8_t a1_x = vmovl_u8(a1_x_u8);
uint16x4_t a0_y;
uint16x4_t a1_y;
uint16x4_t shift1;
dr_prediction_z2_4xH_left_neon(LEFT, upsample_left, dy, r, frac_bits_y,
&a0_y, &a1_y, &shift1);
a0_x = vcombine_u16(vget_low_u16(a0_x), a0_y);
a1_x = vcombine_u16(vget_low_u16(a1_x), a1_y);
uint16x8_t shift = vcombine_u16(shift0, shift1);
uint16x8_t diff = vsubq_u16(a1_x, a0_x); // a[x+1] - a[x]
uint16x8_t a32 = vshlq_n_u16(a0_x, 5);
uint16x8_t res = vmlaq_u16(a32, diff, shift);
uint8x8_t resx = vrshrn_n_u16(res, 5);
uint8x8_t resy = vext_u8(resx, vdup_n_u8(0), 4);
uint8x8_t mask = vld1_u8(BaseMask[base_min_diff]);
uint8x8_t v_resxy = vbsl_u8(mask, resy, resx);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(v_resxy), 0);
} else {
uint16x4_t a0_y, a1_y;
uint16x4_t shift1;
dr_prediction_z2_4xH_left_neon(LEFT, upsample_left, dy, r, frac_bits_y,
&a0_y, &a1_y, &shift1);
uint16x4_t diff = vsub_u16(a1_y, a0_y); // a[x+1] - a[x]
uint16x4_t a32 = vshl_n_u16(a0_y, 5);
uint16x4_t res = vmla_u16(a32, diff, shift1);
uint8x8_t resy = vrshrn_n_u16(vcombine_u16(res, vdup_n_u16(0)), 5);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(resy), 0);
}
dst += stride;
}
#undef LEFT
}
static void dr_prediction_z2_8xH_neon(int H, uint8_t *dst, ptrdiff_t stride,
const uint8_t *above, const uint8_t *left,
int upsample_above, int upsample_left,
int dx, int dy) {
const int min_base_x = -(1 << upsample_above);
const int frac_bits_x = 6 - upsample_above;
const int frac_bits_y = 6 - upsample_left;
// above0 * (32 - shift) + above1 * shift
// = (above1 - above0) * shift + above0 * 32
#if AOM_ARCH_AARCH64
// Use ext rather than loading left + 30 directly to avoid over-read.
const uint8x16_t left_m2 = vld1q_u8(left - 2);
const uint8x16_t left_0 = vld1q_u8(left + 0);
const uint8x16_t left_16 = vld1q_u8(left + 16);
const uint8x16_t left_14 = vextq_u8(left_0, left_16, 14);
const uint8x16_t left_30 = vextq_u8(left_16, left_16, 14);
const uint8x16x3_t left_vals = { { left_m2, left_14, left_30 } };
#define LEFT left_vals
#else // !AOM_ARCH_AARCH64
#define LEFT left
#endif // AOM_ARCH_AARCH64
for (int r = 0; r < H; r++) {
int y = r + 1;
int base_x = (-y * dx) >> frac_bits_x;
int base_min_diff =
(min_base_x - base_x + upsample_above) >> upsample_above;
if (base_min_diff <= 0) {
uint8x8_t resx =
dr_prediction_z2_8xH_above_neon(above, upsample_above, dx, base_x, y);
vst1_u8(dst, resx);
} else if (base_min_diff < 8) {
uint8x8_t resx =
dr_prediction_z2_8xH_above_neon(above, upsample_above, dx, base_x, y);
uint8x8_t resy = dr_prediction_z2_8xH_left_neon(LEFT, upsample_left, dy,
r, frac_bits_y);
uint8x8_t mask = vld1_u8(BaseMask[base_min_diff]);
uint8x8_t resxy = vbsl_u8(mask, resy, resx);
vst1_u8(dst, resxy);
} else {
uint8x8_t resy = dr_prediction_z2_8xH_left_neon(LEFT, upsample_left, dy,
r, frac_bits_y);
vst1_u8(dst, resy);
}
dst += stride;
}
#undef LEFT
}
static void dr_prediction_z2_WxH_neon(int W, int H, uint8_t *dst,
ptrdiff_t stride, const uint8_t *above,
const uint8_t *left, int dx, int dy) {
// here upsample_above and upsample_left are 0 by design of
// av1_use_intra_edge_upsample
const int min_base_x = -1;
#if AOM_ARCH_AARCH64
const uint8x16_t left_m1 = vld1q_u8(left - 1);
const uint8x16_t left_0 = vld1q_u8(left + 0);
const uint8x16_t left_16 = vld1q_u8(left + 16);
const uint8x16_t left_32 = vld1q_u8(left + 32);
const uint8x16_t left_48 = vld1q_u8(left + 48);
const uint8x16_t left_15 = vextq_u8(left_0, left_16, 15);
const uint8x16_t left_31 = vextq_u8(left_16, left_32, 15);
const uint8x16_t left_47 = vextq_u8(left_32, left_48, 15);
const uint8x16x4_t left_vals0 = { { left_m1, left_15, left_31, left_47 } };
const uint8x16x4_t left_vals1 = { { left_0, left_16, left_32, left_48 } };
#define LEFT left_vals0, left_vals1
#else // !AOM_ARCH_AARCH64
#define LEFT left
#endif // AOM_ARCH_AARCH64
for (int r = 0; r < H; r++) {
int y = r + 1;
int base_x = (-y * dx) >> 6;
for (int j = 0; j < W; j += 16) {
const int base_min_diff = min_base_x - base_x - j;
if (base_min_diff <= 0) {
uint8x16_t resx =
dr_prediction_z2_WxH_above_neon(above, dx, base_x, y, j);
vst1q_u8(dst + j, resx);
} else if (base_min_diff < 16) {
uint8x16_t resx =
dr_prediction_z2_WxH_above_neon(above, dx, base_x, y, j);
uint8x16_t resy = dr_prediction_z2_WxH_left_neon(LEFT, dy, r, j);
uint8x16_t mask = vld1q_u8(BaseMask[base_min_diff]);
uint8x16_t resxy = vbslq_u8(mask, resy, resx);
vst1q_u8(dst + j, resxy);
} else {
uint8x16_t resy = dr_prediction_z2_WxH_left_neon(LEFT, dy, r, j);
vst1q_u8(dst + j, resy);
}
} // for j
dst += stride;
}
#undef LEFT
}
// Directional prediction, zone 2: 90 < angle < 180
void av1_dr_prediction_z2_neon(uint8_t *dst, ptrdiff_t stride, int bw, int bh,
const uint8_t *above, const uint8_t *left,
int upsample_above, int upsample_left, int dx,
int dy) {
assert(dx > 0);
assert(dy > 0);
switch (bw) {
case 4:
dr_prediction_z2_4xH_neon(bh, dst, stride, above, left, upsample_above,
upsample_left, dx, dy);
break;
case 8:
dr_prediction_z2_8xH_neon(bh, dst, stride, above, left, upsample_above,
upsample_left, dx, dy);
break;
default:
dr_prediction_z2_WxH_neon(bw, bh, dst, stride, above, left, dx, dy);
break;
}
}
/* ---------------------P R E D I C T I O N Z 3--------------------------- */
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
static AOM_FORCE_INLINE void z3_transpose_arrays_u8_16x4(const uint8x16_t *x,
uint8x16x2_t *d) {
uint8x16x2_t w0 = vzipq_u8(x[0], x[1]);
uint8x16x2_t w1 = vzipq_u8(x[2], x[3]);
d[0] = aom_reinterpretq_u8_u16_x2(vzipq_u16(vreinterpretq_u16_u8(w0.val[0]),
vreinterpretq_u16_u8(w1.val[0])));
d[1] = aom_reinterpretq_u8_u16_x2(vzipq_u16(vreinterpretq_u16_u8(w0.val[1]),
vreinterpretq_u16_u8(w1.val[1])));
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
static AOM_FORCE_INLINE void z3_transpose_arrays_u8_4x4(const uint8x8_t *x,
uint8x8x2_t *d) {
uint8x8x2_t w0 = vzip_u8(x[0], x[1]);
uint8x8x2_t w1 = vzip_u8(x[2], x[3]);
*d = aom_reinterpret_u8_u16_x2(
vzip_u16(vreinterpret_u16_u8(w0.val[0]), vreinterpret_u16_u8(w1.val[0])));
}
static AOM_FORCE_INLINE void z3_transpose_arrays_u8_8x4(const uint8x8_t *x,
uint8x8x2_t *d) {
uint8x8x2_t w0 = vzip_u8(x[0], x[1]);
uint8x8x2_t w1 = vzip_u8(x[2], x[3]);
d[0] = aom_reinterpret_u8_u16_x2(
vzip_u16(vreinterpret_u16_u8(w0.val[0]), vreinterpret_u16_u8(w1.val[0])));
d[1] = aom_reinterpret_u8_u16_x2(
vzip_u16(vreinterpret_u16_u8(w0.val[1]), vreinterpret_u16_u8(w1.val[1])));
}
static void z3_transpose_arrays_u8_16x16(const uint8_t *src, ptrdiff_t pitchSrc,
uint8_t *dst, ptrdiff_t pitchDst) {
// The same as the normal transposes in transpose_neon.h, but with a stride
// between consecutive vectors of elements.
uint8x16_t r[16];
uint8x16_t d[16];
for (int i = 0; i < 16; i++) {
r[i] = vld1q_u8(src + i * pitchSrc);
}
transpose_arrays_u8_16x16(r, d);
for (int i = 0; i < 16; i++) {
vst1q_u8(dst + i * pitchDst, d[i]);
}
}
static void z3_transpose_arrays_u8_16nx16n(const uint8_t *src,
ptrdiff_t pitchSrc, uint8_t *dst,
ptrdiff_t pitchDst, int width,
int height) {
for (int j = 0; j < height; j += 16) {
for (int i = 0; i < width; i += 16) {
z3_transpose_arrays_u8_16x16(src + i * pitchSrc + j, pitchSrc,
dst + j * pitchDst + i, pitchDst);
}
}
}
static void dr_prediction_z3_4x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[4];
uint8x8x2_t dest;
dr_prediction_z1_WxH_internal_neon_small(4, 4, dstvec, left, upsample_left,
dy);
z3_transpose_arrays_u8_4x4(dstvec, &dest);
store_u8x4_strided_x2(dst + stride * 0, stride, dest.val[0]);
store_u8x4_strided_x2(dst + stride * 2, stride, dest.val[1]);
}
static void dr_prediction_z3_8x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[8];
uint8x8_t d[8];
dr_prediction_z1_WxH_internal_neon_small(8, 8, dstvec, left, upsample_left,
dy);
transpose_arrays_u8_8x8(dstvec, d);
store_u8_8x8(dst, stride, d[0], d[1], d[2], d[3], d[4], d[5], d[6], d[7]);
}
static void dr_prediction_z3_4x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[4];
uint8x8x2_t d[2];
dr_prediction_z1_WxH_internal_neon_small(8, 4, dstvec, left, upsample_left,
dy);
z3_transpose_arrays_u8_8x4(dstvec, d);
store_u8x4_strided_x2(dst + stride * 0, stride, d[0].val[0]);
store_u8x4_strided_x2(dst + stride * 2, stride, d[0].val[1]);
store_u8x4_strided_x2(dst + stride * 4, stride, d[1].val[0]);
store_u8x4_strided_x2(dst + stride * 6, stride, d[1].val[1]);
}
static void dr_prediction_z3_8x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[8];
uint8x8_t d[8];
dr_prediction_z1_WxH_internal_neon_small(4, 8, dstvec, left, upsample_left,
dy);
transpose_arrays_u8_8x8(dstvec, d);
store_u8_8x4(dst, stride, d[0], d[1], d[2], d[3]);
}
static void dr_prediction_z3_8x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16_t dstvec[8];
uint8x8_t d[16];
dr_prediction_z1_WxH_internal_neon_large(16, 8, dstvec, left, dy);
transpose_arrays_u8_16x8(dstvec, d);
for (int i = 0; i < 16; i++) {
vst1_u8(dst + i * stride, d[i]);
}
}
static void dr_prediction_z3_16x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[16];
uint8x16_t d[8];
dr_prediction_z1_WxH_internal_neon_small(8, 16, dstvec, left, upsample_left,
dy);
transpose_arrays_u8_8x16(dstvec, d);
for (int i = 0; i < 8; i++) {
vst1q_u8(dst + i * stride, d[i]);
}
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
static void dr_prediction_z3_4x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16_t dstvec[4];
uint8x16x2_t d[2];
dr_prediction_z1_WxH_internal_neon_large(16, 4, dstvec, left, dy);
z3_transpose_arrays_u8_16x4(dstvec, d);
store_u8x4_strided_x4(dst + stride * 0, stride, d[0].val[0]);
store_u8x4_strided_x4(dst + stride * 4, stride, d[0].val[1]);
store_u8x4_strided_x4(dst + stride * 8, stride, d[1].val[0]);
store_u8x4_strided_x4(dst + stride * 12, stride, d[1].val[1]);
}
static void dr_prediction_z3_16x4_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[16];
uint8x16_t d[8];
dr_prediction_z1_WxH_internal_neon_small(4, 16, dstvec, left, upsample_left,
dy);
transpose_arrays_u8_8x16(dstvec, d);
for (int i = 0; i < 4; i++) {
vst1q_u8(dst + i * stride, d[i]);
}
}
static void dr_prediction_z3_8x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16x2_t dstvec[16];
uint8x16_t d[32];
uint8x16_t v_zero = vdupq_n_u8(0);
dr_prediction_z1_32xH_internal_neon(8, dstvec, left, dy);
for (int i = 8; i < 16; i++) {
dstvec[i].val[0] = v_zero;
dstvec[i].val[1] = v_zero;
}
transpose_arrays_u8_32x16(dstvec, d);
for (int i = 0; i < 32; i++) {
vst1_u8(dst + i * stride, vget_low_u8(d[i]));
}
}
static void dr_prediction_z3_32x8_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
uint8x8_t dstvec[32];
uint8x16_t d[16];
dr_prediction_z1_WxH_internal_neon_small(8, 32, dstvec, left, upsample_left,
dy);
transpose_arrays_u8_8x16(dstvec, d);
transpose_arrays_u8_8x16(dstvec + 16, d + 8);
for (int i = 0; i < 8; i++) {
vst1q_u8(dst + i * stride, d[i]);
vst1q_u8(dst + i * stride + 16, d[i + 8]);
}
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
static void dr_prediction_z3_16x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16_t dstvec[16];
uint8x16_t d[16];
dr_prediction_z1_WxH_internal_neon_large(16, 16, dstvec, left, dy);
transpose_arrays_u8_16x16(dstvec, d);
for (int i = 0; i < 16; i++) {
vst1q_u8(dst + i * stride, d[i]);
}
}
static void dr_prediction_z3_32x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16x2_t dstvec[32];
uint8x16_t d[64];
dr_prediction_z1_32xH_internal_neon(32, dstvec, left, dy);
transpose_arrays_u8_32x16(dstvec, d);
transpose_arrays_u8_32x16(dstvec + 16, d + 32);
for (int i = 0; i < 32; i++) {
vst1q_u8(dst + i * stride, d[i]);
vst1q_u8(dst + i * stride + 16, d[i + 32]);
}
}
static void dr_prediction_z3_64x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
DECLARE_ALIGNED(16, uint8_t, dstT[64 * 64]);
dr_prediction_z1_64xH_neon(64, dstT, 64, left, dy);
z3_transpose_arrays_u8_16nx16n(dstT, 64, dst, stride, 64, 64);
}
static void dr_prediction_z3_16x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16x2_t dstvec[16];
uint8x16_t d[32];
dr_prediction_z1_32xH_internal_neon(16, dstvec, left, dy);
transpose_arrays_u8_32x16(dstvec, d);
for (int i = 0; i < 16; i++) {
vst1q_u8(dst + 2 * i * stride, d[2 * i + 0]);
vst1q_u8(dst + (2 * i + 1) * stride, d[2 * i + 1]);
}
}
static void dr_prediction_z3_32x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16_t dstvec[32];
dr_prediction_z1_WxH_internal_neon_large(16, 32, dstvec, left, dy);
for (int i = 0; i < 32; i += 16) {
uint8x16_t d[16];
transpose_arrays_u8_16x16(dstvec + i, d);
for (int j = 0; j < 16; j++) {
vst1q_u8(dst + j * stride + i, d[j]);
}
}
}
static void dr_prediction_z3_32x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8_t dstT[64 * 32];
dr_prediction_z1_64xH_neon(32, dstT, 64, left, dy);
z3_transpose_arrays_u8_16nx16n(dstT, 64, dst, stride, 32, 64);
}
static void dr_prediction_z3_64x32_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8_t dstT[32 * 64];
dr_prediction_z1_32xH_neon(64, dstT, 32, left, dy);
z3_transpose_arrays_u8_16nx16n(dstT, 32, dst, stride, 64, 32);
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
static void dr_prediction_z3_16x64_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8_t dstT[64 * 16];
dr_prediction_z1_64xH_neon(16, dstT, 64, left, dy);
z3_transpose_arrays_u8_16nx16n(dstT, 64, dst, stride, 16, 64);
}
static void dr_prediction_z3_64x16_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy) {
(void)upsample_left;
uint8x16_t dstvec[64];
dr_prediction_z1_WxH_internal_neon_large(16, 64, dstvec, left, dy);
for (int i = 0; i < 64; i += 16) {
uint8x16_t d[16];
transpose_arrays_u8_16x16(dstvec + i, d);
for (int j = 0; j < 16; ++j) {
vst1q_u8(dst + j * stride + i, d[j]);
}
}
}
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
typedef void (*dr_prediction_z3_fn)(uint8_t *dst, ptrdiff_t stride,
const uint8_t *left, int upsample_left,
int dy);
#if CONFIG_REALTIME_ONLY && !CONFIG_AV1_DECODER
static const dr_prediction_z3_fn dr_prediction_z3_arr[7][7] = {
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, dr_prediction_z3_4x4_neon, dr_prediction_z3_4x8_neon, NULL,
NULL, NULL },
{ NULL, NULL, dr_prediction_z3_8x4_neon, dr_prediction_z3_8x8_neon,
dr_prediction_z3_8x16_neon, NULL, NULL },
{ NULL, NULL, NULL, dr_prediction_z3_16x8_neon, dr_prediction_z3_16x16_neon,
dr_prediction_z3_16x32_neon, NULL },
{ NULL, NULL, NULL, NULL, dr_prediction_z3_32x16_neon,
dr_prediction_z3_32x32_neon, dr_prediction_z3_32x64_neon },
{ NULL, NULL, NULL, NULL, NULL, dr_prediction_z3_64x32_neon,
dr_prediction_z3_64x64_neon },
};
#else
static const dr_prediction_z3_fn dr_prediction_z3_arr[7][7] = {
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, NULL, NULL, NULL, NULL, NULL },
{ NULL, NULL, dr_prediction_z3_4x4_neon, dr_prediction_z3_4x8_neon,
dr_prediction_z3_4x16_neon, NULL, NULL },
{ NULL, NULL, dr_prediction_z3_8x4_neon, dr_prediction_z3_8x8_neon,
dr_prediction_z3_8x16_neon, dr_prediction_z3_8x32_neon, NULL },
{ NULL, NULL, dr_prediction_z3_16x4_neon, dr_prediction_z3_16x8_neon,
dr_prediction_z3_16x16_neon, dr_prediction_z3_16x32_neon,
dr_prediction_z3_16x64_neon },
{ NULL, NULL, NULL, dr_prediction_z3_32x8_neon, dr_prediction_z3_32x16_neon,
dr_prediction_z3_32x32_neon, dr_prediction_z3_32x64_neon },
{ NULL, NULL, NULL, NULL, dr_prediction_z3_64x16_neon,
dr_prediction_z3_64x32_neon, dr_prediction_z3_64x64_neon },
};
#endif // CONFIG_REALTIME_ONLY && !CONFIG_AV1_DECODER
void av1_dr_prediction_z3_neon(uint8_t *dst, ptrdiff_t stride, int bw, int bh,
const uint8_t *above, const uint8_t *left,
int upsample_left, int dx, int dy) {
(void)above;
(void)dx;
assert(dx == 1);
assert(dy > 0);
dr_prediction_z3_fn f = dr_prediction_z3_arr[get_msb(bw)][get_msb(bh)];
assert(f != NULL);
f(dst, stride, left, upsample_left, dy);
}
// -----------------------------------------------------------------------------
// SMOOTH_PRED
// 256 - v = vneg_s8(v)
static inline uint8x8_t negate_s8(const uint8x8_t v) {
return vreinterpret_u8_s8(vneg_s8(vreinterpret_s8_u8(v)));
}
static void smooth_4xh_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *const top_row,
const uint8_t *const left_column,
const int height) {
const uint8_t top_right = top_row[3];
const uint8_t bottom_left = left_column[height - 1];
const uint8_t *const weights_y = smooth_weights + height - 4;
uint8x8_t top_v = load_u8_4x1(top_row);
const uint8x8_t top_right_v = vdup_n_u8(top_right);
const uint8x8_t bottom_left_v = vdup_n_u8(bottom_left);
uint8x8_t weights_x_v = load_u8_4x1(smooth_weights);
const uint8x8_t scaled_weights_x = negate_s8(weights_x_v);
const uint16x8_t weighted_tr = vmull_u8(scaled_weights_x, top_right_v);
assert(height > 0);
int y = 0;
do {
const uint8x8_t left_v = vdup_n_u8(left_column[y]);
const uint8x8_t weights_y_v = vdup_n_u8(weights_y[y]);
const uint8x8_t scaled_weights_y = negate_s8(weights_y_v);
const uint16x8_t weighted_bl = vmull_u8(scaled_weights_y, bottom_left_v);
const uint16x8_t weighted_top_bl =
vmlal_u8(weighted_bl, weights_y_v, top_v);
const uint16x8_t weighted_left_tr =
vmlal_u8(weighted_tr, weights_x_v, left_v);
// Maximum value of each parameter: 0xFF00
const uint16x8_t avg = vhaddq_u16(weighted_top_bl, weighted_left_tr);
const uint8x8_t result = vrshrn_n_u16(avg, SMOOTH_WEIGHT_LOG2_SCALE);
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(result), 0);
dst += stride;
} while (++y != height);
}
static inline uint8x8_t calculate_pred(const uint16x8_t weighted_top_bl,
const uint16x8_t weighted_left_tr) {
// Maximum value of each parameter: 0xFF00
const uint16x8_t avg = vhaddq_u16(weighted_top_bl, weighted_left_tr);
return vrshrn_n_u16(avg, SMOOTH_WEIGHT_LOG2_SCALE);
}
static inline uint8x8_t calculate_weights_and_pred(
const uint8x8_t top, const uint8x8_t left, const uint16x8_t weighted_tr,
const uint8x8_t bottom_left, const uint8x8_t weights_x,
const uint8x8_t scaled_weights_y, const uint8x8_t weights_y) {
const uint16x8_t weighted_top = vmull_u8(weights_y, top);
const uint16x8_t weighted_top_bl =
vmlal_u8(weighted_top, scaled_weights_y, bottom_left);
const uint16x8_t weighted_left_tr = vmlal_u8(weighted_tr, weights_x, left);
return calculate_pred(weighted_top_bl, weighted_left_tr);
}
static void smooth_8xh_neon(uint8_t *dst, ptrdiff_t stride,
const uint8_t *const top_row,
const uint8_t *const left_column,
const int height) {
const uint8_t top_right = top_row[7];
const uint8_t bottom_left = left_column[height - 1];
const uint8_t *const weights_y = smooth_weights + height - 4;
const uint8x8_t top_v = vld1_u8(top_row);
const uint8x8_t top_right_v = vdup_n_u8(top_right);
const uint8x8_t bottom_left_v = vdup_n_u8(bottom_left);
const uint8x8_t weights_x_v = vld1_u8(smooth_weights + 4);
const uint8x8_t scaled_weights_x = negate_s8(weights_x_v);
const uint16x8_t weighted_tr = vmull_u8(scaled_weights_x, top_right_v);
assert(height > 0);
int y = 0;
do {
const uint8x8_t left_v = vdup_n_u8(left_column[y]);
const uint8x8_t weights_y_v = vdup_n_u8(weights_y[y]);
const uint8x8_t scaled_weights_y = negate_s8(weights_y_v);
const uint8x8_t result =
calculate_weights_and_pred(top_v, left_v, weighted_tr, bottom_left_v,
weights_x_v, scaled_weights_y, weights_y_v);
vst1_u8(dst, result);
dst += stride;
} while (++y != height);
}
#define SMOOTH_NXM(W, H) \
void aom_smooth_predictor_##W##x##H##_neon(uint8_t *dst, ptrdiff_t y_stride, \
const uint8_t *above, \
const uint8_t *left) { \
smooth_##W##xh_neon(dst, y_stride, above, left, H); \
}
SMOOTH_NXM(4, 4)
SMOOTH_NXM(4, 8)
SMOOTH_NXM(8, 4)
SMOOTH_NXM(8, 8)
SMOOTH_NXM(8, 16)
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_NXM(4, 16)
SMOOTH_NXM(8, 32)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
#undef SMOOTH_NXM
static inline uint8x16_t calculate_weights_and_predq(
const uint8x16_t top, const uint8x8_t left, const uint8x8_t top_right,
const uint8x8_t weights_y, const uint8x16_t weights_x,
const uint8x16_t scaled_weights_x, const uint16x8_t weighted_bl) {
const uint16x8_t weighted_top_bl_low =
vmlal_u8(weighted_bl, weights_y, vget_low_u8(top));
const uint16x8_t weighted_left_low = vmull_u8(vget_low_u8(weights_x), left);
const uint16x8_t weighted_left_tr_low =
vmlal_u8(weighted_left_low, vget_low_u8(scaled_weights_x), top_right);
const uint8x8_t result_low =
calculate_pred(weighted_top_bl_low, weighted_left_tr_low);
const uint16x8_t weighted_top_bl_high =
vmlal_u8(weighted_bl, weights_y, vget_high_u8(top));
const uint16x8_t weighted_left_high = vmull_u8(vget_high_u8(weights_x), left);
const uint16x8_t weighted_left_tr_high =
vmlal_u8(weighted_left_high, vget_high_u8(scaled_weights_x), top_right);
const uint8x8_t result_high =
calculate_pred(weighted_top_bl_high, weighted_left_tr_high);
return vcombine_u8(result_low, result_high);
}
// 256 - v = vneg_s8(v)
static inline uint8x16_t negate_s8q(const uint8x16_t v) {
return vreinterpretq_u8_s8(vnegq_s8(vreinterpretq_s8_u8(v)));
}
// For width 16 and above.
#define SMOOTH_PREDICTOR(W) \
static void smooth_##W##xh_neon( \
uint8_t *dst, ptrdiff_t stride, const uint8_t *const top_row, \
const uint8_t *const left_column, const int height) { \
const uint8_t top_right = top_row[(W) - 1]; \
const uint8_t bottom_left = left_column[height - 1]; \
const uint8_t *const weights_y = smooth_weights + height - 4; \
\
uint8x16_t top_v[4]; \
top_v[0] = vld1q_u8(top_row); \
if ((W) > 16) { \
top_v[1] = vld1q_u8(top_row + 16); \
if ((W) == 64) { \
top_v[2] = vld1q_u8(top_row + 32); \
top_v[3] = vld1q_u8(top_row + 48); \
} \
} \
\
const uint8x8_t top_right_v = vdup_n_u8(top_right); \
const uint8x8_t bottom_left_v = vdup_n_u8(bottom_left); \
\
uint8x16_t weights_x_v[4]; \
weights_x_v[0] = vld1q_u8(smooth_weights + (W) - 4); \
if ((W) > 16) { \
weights_x_v[1] = vld1q_u8(smooth_weights + (W) + 16 - 4); \
if ((W) == 64) { \
weights_x_v[2] = vld1q_u8(smooth_weights + (W) + 32 - 4); \
weights_x_v[3] = vld1q_u8(smooth_weights + (W) + 48 - 4); \
} \
} \
\
uint8x16_t scaled_weights_x[4]; \
scaled_weights_x[0] = negate_s8q(weights_x_v[0]); \
if ((W) > 16) { \
scaled_weights_x[1] = negate_s8q(weights_x_v[1]); \
if ((W) == 64) { \
scaled_weights_x[2] = negate_s8q(weights_x_v[2]); \
scaled_weights_x[3] = negate_s8q(weights_x_v[3]); \
} \
} \
\
for (int y = 0; y < height; ++y) { \
const uint8x8_t left_v = vdup_n_u8(left_column[y]); \
const uint8x8_t weights_y_v = vdup_n_u8(weights_y[y]); \
const uint8x8_t scaled_weights_y = negate_s8(weights_y_v); \
const uint16x8_t weighted_bl = \
vmull_u8(scaled_weights_y, bottom_left_v); \
\
vst1q_u8(dst, calculate_weights_and_predq( \
top_v[0], left_v, top_right_v, weights_y_v, \
weights_x_v[0], scaled_weights_x[0], weighted_bl)); \
\
if ((W) > 16) { \
vst1q_u8(dst + 16, \
calculate_weights_and_predq( \
top_v[1], left_v, top_right_v, weights_y_v, \
weights_x_v[1], scaled_weights_x[1], weighted_bl)); \
if ((W) == 64) { \
vst1q_u8(dst + 32, \
calculate_weights_and_predq( \
top_v[2], left_v, top_right_v, weights_y_v, \
weights_x_v[2], scaled_weights_x[2], weighted_bl)); \
vst1q_u8(dst + 48, \
calculate_weights_and_predq( \
top_v[3], left_v, top_right_v, weights_y_v, \
weights_x_v[3], scaled_weights_x[3], weighted_bl)); \
} \
} \
\
dst += stride; \
} \
}
SMOOTH_PREDICTOR(16)
SMOOTH_PREDICTOR(32)
SMOOTH_PREDICTOR(64)
#undef SMOOTH_PREDICTOR
#define SMOOTH_NXM_WIDE(W, H) \
void aom_smooth_predictor_##W##x##H##_neon(uint8_t *dst, ptrdiff_t y_stride, \
const uint8_t *above, \
const uint8_t *left) { \
smooth_##W##xh_neon(dst, y_stride, above, left, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_NXM_WIDE(16, 4)
SMOOTH_NXM_WIDE(16, 64)
SMOOTH_NXM_WIDE(32, 8)
SMOOTH_NXM_WIDE(64, 16)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_NXM_WIDE(16, 8)
SMOOTH_NXM_WIDE(16, 16)
SMOOTH_NXM_WIDE(16, 32)
SMOOTH_NXM_WIDE(32, 16)
SMOOTH_NXM_WIDE(32, 32)
SMOOTH_NXM_WIDE(32, 64)
SMOOTH_NXM_WIDE(64, 32)
SMOOTH_NXM_WIDE(64, 64)
#undef SMOOTH_NXM_WIDE
// -----------------------------------------------------------------------------
// SMOOTH_V_PRED
// For widths 4 and 8.
#define SMOOTH_V_PREDICTOR(W) \
static void smooth_v_##W##xh_neon( \
uint8_t *dst, ptrdiff_t stride, const uint8_t *const top_row, \
const uint8_t *const left_column, const int height) { \
const uint8_t bottom_left = left_column[height - 1]; \
const uint8_t *const weights_y = smooth_weights + height - 4; \
\
uint8x8_t top_v; \
if ((W) == 4) { \
top_v = load_u8_4x1(top_row); \
} else { /* width == 8 */ \
top_v = vld1_u8(top_row); \
} \
\
const uint8x8_t bottom_left_v = vdup_n_u8(bottom_left); \
\
assert(height > 0); \
int y = 0; \
do { \
const uint8x8_t weights_y_v = vdup_n_u8(weights_y[y]); \
const uint8x8_t scaled_weights_y = negate_s8(weights_y_v); \
\
const uint16x8_t weighted_top = vmull_u8(weights_y_v, top_v); \
const uint16x8_t weighted_top_bl = \
vmlal_u8(weighted_top, scaled_weights_y, bottom_left_v); \
const uint8x8_t pred = \
vrshrn_n_u16(weighted_top_bl, SMOOTH_WEIGHT_LOG2_SCALE); \
\
if ((W) == 4) { \
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(pred), 0); \
} else { /* width == 8 */ \
vst1_u8(dst, pred); \
} \
dst += stride; \
} while (++y != height); \
}
SMOOTH_V_PREDICTOR(4)
SMOOTH_V_PREDICTOR(8)
#undef SMOOTH_V_PREDICTOR
#define SMOOTH_V_NXM(W, H) \
void aom_smooth_v_predictor_##W##x##H##_neon( \
uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, \
const uint8_t *left) { \
smooth_v_##W##xh_neon(dst, y_stride, above, left, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_V_NXM(4, 16)
SMOOTH_V_NXM(8, 32)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_V_NXM(4, 4)
SMOOTH_V_NXM(4, 8)
SMOOTH_V_NXM(8, 4)
SMOOTH_V_NXM(8, 8)
SMOOTH_V_NXM(8, 16)
#undef SMOOTH_V_NXM
static inline uint8x16_t calculate_vertical_weights_and_pred(
const uint8x16_t top, const uint8x8_t weights_y,
const uint16x8_t weighted_bl) {
const uint16x8_t pred_low =
vmlal_u8(weighted_bl, weights_y, vget_low_u8(top));
const uint16x8_t pred_high =
vmlal_u8(weighted_bl, weights_y, vget_high_u8(top));
const uint8x8_t pred_scaled_low =
vrshrn_n_u16(pred_low, SMOOTH_WEIGHT_LOG2_SCALE);
const uint8x8_t pred_scaled_high =
vrshrn_n_u16(pred_high, SMOOTH_WEIGHT_LOG2_SCALE);
return vcombine_u8(pred_scaled_low, pred_scaled_high);
}
// For width 16 and above.
#define SMOOTH_V_PREDICTOR(W) \
static void smooth_v_##W##xh_neon( \
uint8_t *dst, ptrdiff_t stride, const uint8_t *const top_row, \
const uint8_t *const left_column, const int height) { \
const uint8_t bottom_left = left_column[height - 1]; \
const uint8_t *const weights_y = smooth_weights + height - 4; \
\
uint8x16_t top_v[4]; \
top_v[0] = vld1q_u8(top_row); \
if ((W) > 16) { \
top_v[1] = vld1q_u8(top_row + 16); \
if ((W) == 64) { \
top_v[2] = vld1q_u8(top_row + 32); \
top_v[3] = vld1q_u8(top_row + 48); \
} \
} \
\
const uint8x8_t bottom_left_v = vdup_n_u8(bottom_left); \
\
assert(height > 0); \
int y = 0; \
do { \
const uint8x8_t weights_y_v = vdup_n_u8(weights_y[y]); \
const uint8x8_t scaled_weights_y = negate_s8(weights_y_v); \
const uint16x8_t weighted_bl = \
vmull_u8(scaled_weights_y, bottom_left_v); \
\
const uint8x16_t pred_0 = calculate_vertical_weights_and_pred( \
top_v[0], weights_y_v, weighted_bl); \
vst1q_u8(dst, pred_0); \
\
if ((W) > 16) { \
const uint8x16_t pred_1 = calculate_vertical_weights_and_pred( \
top_v[1], weights_y_v, weighted_bl); \
vst1q_u8(dst + 16, pred_1); \
\
if ((W) == 64) { \
const uint8x16_t pred_2 = calculate_vertical_weights_and_pred( \
top_v[2], weights_y_v, weighted_bl); \
vst1q_u8(dst + 32, pred_2); \
\
const uint8x16_t pred_3 = calculate_vertical_weights_and_pred( \
top_v[3], weights_y_v, weighted_bl); \
vst1q_u8(dst + 48, pred_3); \
} \
} \
\
dst += stride; \
} while (++y != height); \
}
SMOOTH_V_PREDICTOR(16)
SMOOTH_V_PREDICTOR(32)
SMOOTH_V_PREDICTOR(64)
#undef SMOOTH_V_PREDICTOR
#define SMOOTH_V_NXM_WIDE(W, H) \
void aom_smooth_v_predictor_##W##x##H##_neon( \
uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, \
const uint8_t *left) { \
smooth_v_##W##xh_neon(dst, y_stride, above, left, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_V_NXM_WIDE(16, 4)
SMOOTH_V_NXM_WIDE(32, 8)
SMOOTH_V_NXM_WIDE(64, 16)
SMOOTH_V_NXM_WIDE(16, 64)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_V_NXM_WIDE(16, 8)
SMOOTH_V_NXM_WIDE(16, 16)
SMOOTH_V_NXM_WIDE(16, 32)
SMOOTH_V_NXM_WIDE(32, 16)
SMOOTH_V_NXM_WIDE(32, 32)
SMOOTH_V_NXM_WIDE(32, 64)
SMOOTH_V_NXM_WIDE(64, 32)
SMOOTH_V_NXM_WIDE(64, 64)
#undef SMOOTH_V_NXM_WIDE
// -----------------------------------------------------------------------------
// SMOOTH_H_PRED
// For widths 4 and 8.
#define SMOOTH_H_PREDICTOR(W) \
static void smooth_h_##W##xh_neon( \
uint8_t *dst, ptrdiff_t stride, const uint8_t *const top_row, \
const uint8_t *const left_column, const int height) { \
const uint8_t top_right = top_row[(W) - 1]; \
\
const uint8x8_t top_right_v = vdup_n_u8(top_right); \
/* Over-reads for 4xN but still within the array. */ \
const uint8x8_t weights_x = vld1_u8(smooth_weights + (W) - 4); \
const uint8x8_t scaled_weights_x = negate_s8(weights_x); \
const uint16x8_t weighted_tr = vmull_u8(scaled_weights_x, top_right_v); \
\
assert(height > 0); \
int y = 0; \
do { \
const uint8x8_t left_v = vdup_n_u8(left_column[y]); \
const uint16x8_t weighted_left_tr = \
vmlal_u8(weighted_tr, weights_x, left_v); \
const uint8x8_t pred = \
vrshrn_n_u16(weighted_left_tr, SMOOTH_WEIGHT_LOG2_SCALE); \
\
if ((W) == 4) { \
vst1_lane_u32((uint32_t *)dst, vreinterpret_u32_u8(pred), 0); \
} else { /* width == 8 */ \
vst1_u8(dst, pred); \
} \
dst += stride; \
} while (++y != height); \
}
SMOOTH_H_PREDICTOR(4)
SMOOTH_H_PREDICTOR(8)
#undef SMOOTH_H_PREDICTOR
#define SMOOTH_H_NXM(W, H) \
void aom_smooth_h_predictor_##W##x##H##_neon( \
uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, \
const uint8_t *left) { \
smooth_h_##W##xh_neon(dst, y_stride, above, left, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_H_NXM(4, 16)
SMOOTH_H_NXM(8, 32)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_H_NXM(4, 4)
SMOOTH_H_NXM(4, 8)
SMOOTH_H_NXM(8, 4)
SMOOTH_H_NXM(8, 8)
SMOOTH_H_NXM(8, 16)
#undef SMOOTH_H_NXM
static inline uint8x16_t calculate_horizontal_weights_and_pred(
const uint8x8_t left, const uint8x8_t top_right, const uint8x16_t weights_x,
const uint8x16_t scaled_weights_x) {
const uint16x8_t weighted_left_low = vmull_u8(vget_low_u8(weights_x), left);
const uint16x8_t weighted_left_tr_low =
vmlal_u8(weighted_left_low, vget_low_u8(scaled_weights_x), top_right);
const uint8x8_t pred_scaled_low =
vrshrn_n_u16(weighted_left_tr_low, SMOOTH_WEIGHT_LOG2_SCALE);
const uint16x8_t weighted_left_high = vmull_u8(vget_high_u8(weights_x), left);
const uint16x8_t weighted_left_tr_high =
vmlal_u8(weighted_left_high, vget_high_u8(scaled_weights_x), top_right);
const uint8x8_t pred_scaled_high =
vrshrn_n_u16(weighted_left_tr_high, SMOOTH_WEIGHT_LOG2_SCALE);
return vcombine_u8(pred_scaled_low, pred_scaled_high);
}
// For width 16 and above.
#define SMOOTH_H_PREDICTOR(W) \
static void smooth_h_##W##xh_neon( \
uint8_t *dst, ptrdiff_t stride, const uint8_t *const top_row, \
const uint8_t *const left_column, const int height) { \
const uint8_t top_right = top_row[(W) - 1]; \
\
const uint8x8_t top_right_v = vdup_n_u8(top_right); \
\
uint8x16_t weights_x[4]; \
weights_x[0] = vld1q_u8(smooth_weights + (W) - 4); \
if ((W) > 16) { \
weights_x[1] = vld1q_u8(smooth_weights + (W) + 16 - 4); \
if ((W) == 64) { \
weights_x[2] = vld1q_u8(smooth_weights + (W) + 32 - 4); \
weights_x[3] = vld1q_u8(smooth_weights + (W) + 48 - 4); \
} \
} \
\
uint8x16_t scaled_weights_x[4]; \
scaled_weights_x[0] = negate_s8q(weights_x[0]); \
if ((W) > 16) { \
scaled_weights_x[1] = negate_s8q(weights_x[1]); \
if ((W) == 64) { \
scaled_weights_x[2] = negate_s8q(weights_x[2]); \
scaled_weights_x[3] = negate_s8q(weights_x[3]); \
} \
} \
\
assert(height > 0); \
int y = 0; \
do { \
const uint8x8_t left_v = vdup_n_u8(left_column[y]); \
\
const uint8x16_t pred_0 = calculate_horizontal_weights_and_pred( \
left_v, top_right_v, weights_x[0], scaled_weights_x[0]); \
vst1q_u8(dst, pred_0); \
\
if ((W) > 16) { \
const uint8x16_t pred_1 = calculate_horizontal_weights_and_pred( \
left_v, top_right_v, weights_x[1], scaled_weights_x[1]); \
vst1q_u8(dst + 16, pred_1); \
\
if ((W) == 64) { \
const uint8x16_t pred_2 = calculate_horizontal_weights_and_pred( \
left_v, top_right_v, weights_x[2], scaled_weights_x[2]); \
vst1q_u8(dst + 32, pred_2); \
\
const uint8x16_t pred_3 = calculate_horizontal_weights_and_pred( \
left_v, top_right_v, weights_x[3], scaled_weights_x[3]); \
vst1q_u8(dst + 48, pred_3); \
} \
} \
dst += stride; \
} while (++y != height); \
}
SMOOTH_H_PREDICTOR(16)
SMOOTH_H_PREDICTOR(32)
SMOOTH_H_PREDICTOR(64)
#undef SMOOTH_H_PREDICTOR
#define SMOOTH_H_NXM_WIDE(W, H) \
void aom_smooth_h_predictor_##W##x##H##_neon( \
uint8_t *dst, ptrdiff_t y_stride, const uint8_t *above, \
const uint8_t *left) { \
smooth_h_##W##xh_neon(dst, y_stride, above, left, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_H_NXM_WIDE(16, 4)
SMOOTH_H_NXM_WIDE(16, 64)
SMOOTH_H_NXM_WIDE(32, 8)
SMOOTH_H_NXM_WIDE(64, 16)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
SMOOTH_H_NXM_WIDE(16, 8)
SMOOTH_H_NXM_WIDE(16, 16)
SMOOTH_H_NXM_WIDE(16, 32)
SMOOTH_H_NXM_WIDE(32, 16)
SMOOTH_H_NXM_WIDE(32, 32)
SMOOTH_H_NXM_WIDE(32, 64)
SMOOTH_H_NXM_WIDE(64, 32)
SMOOTH_H_NXM_WIDE(64, 64)
#undef SMOOTH_H_NXM_WIDE
// -----------------------------------------------------------------------------
// PAETH
static inline void paeth_4or8_x_h_neon(uint8_t *dest, ptrdiff_t stride,
const uint8_t *const top_row,
const uint8_t *const left_column,
int width, int height) {
const uint8x8_t top_left = vdup_n_u8(top_row[-1]);
const uint16x8_t top_left_x2 = vdupq_n_u16(top_row[-1] + top_row[-1]);
uint8x8_t top;
if (width == 4) {
top = load_u8_4x1(top_row);
} else { // width == 8
top = vld1_u8(top_row);
}
assert(height > 0);
int y = 0;
do {
const uint8x8_t left = vdup_n_u8(left_column[y]);
const uint8x8_t left_dist = vabd_u8(top, top_left);
const uint8x8_t top_dist = vabd_u8(left, top_left);
const uint16x8_t top_left_dist =
vabdq_u16(vaddl_u8(top, left), top_left_x2);
const uint8x8_t left_le_top = vcle_u8(left_dist, top_dist);
const uint8x8_t left_le_top_left =
vmovn_u16(vcleq_u16(vmovl_u8(left_dist), top_left_dist));
const uint8x8_t top_le_top_left =
vmovn_u16(vcleq_u16(vmovl_u8(top_dist), top_left_dist));
// if (left_dist <= top_dist && left_dist <= top_left_dist)
const uint8x8_t left_mask = vand_u8(left_le_top, left_le_top_left);
// dest[x] = left_column[y];
// Fill all the unused spaces with 'top'. They will be overwritten when
// the positions for top_left are known.
uint8x8_t result = vbsl_u8(left_mask, left, top);
// else if (top_dist <= top_left_dist)
// dest[x] = top_row[x];
// Add these values to the mask. They were already set.
const uint8x8_t left_or_top_mask = vorr_u8(left_mask, top_le_top_left);
// else
// dest[x] = top_left;
result = vbsl_u8(left_or_top_mask, result, top_left);
if (width == 4) {
store_u8_4x1(dest, result);
} else { // width == 8
vst1_u8(dest, result);
}
dest += stride;
} while (++y != height);
}
#define PAETH_NXM(W, H) \
void aom_paeth_predictor_##W##x##H##_neon(uint8_t *dst, ptrdiff_t stride, \
const uint8_t *above, \
const uint8_t *left) { \
paeth_4or8_x_h_neon(dst, stride, above, left, W, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
PAETH_NXM(4, 16)
PAETH_NXM(8, 32)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
PAETH_NXM(4, 4)
PAETH_NXM(4, 8)
PAETH_NXM(8, 4)
PAETH_NXM(8, 8)
PAETH_NXM(8, 16)
// Calculate X distance <= TopLeft distance and pack the resulting mask into
// uint8x8_t.
static inline uint8x16_t x_le_top_left(const uint8x16_t x_dist,
const uint16x8_t top_left_dist_low,
const uint16x8_t top_left_dist_high) {
const uint8x16_t top_left_dist = vcombine_u8(vqmovn_u16(top_left_dist_low),
vqmovn_u16(top_left_dist_high));
return vcleq_u8(x_dist, top_left_dist);
}
// Select the closest values and collect them.
static inline uint8x16_t select_paeth(const uint8x16_t top,
const uint8x16_t left,
const uint8x16_t top_left,
const uint8x16_t left_le_top,
const uint8x16_t left_le_top_left,
const uint8x16_t top_le_top_left) {
// if (left_dist <= top_dist && left_dist <= top_left_dist)
const uint8x16_t left_mask = vandq_u8(left_le_top, left_le_top_left);
// dest[x] = left_column[y];
// Fill all the unused spaces with 'top'. They will be overwritten when
// the positions for top_left are known.
uint8x16_t result = vbslq_u8(left_mask, left, top);
// else if (top_dist <= top_left_dist)
// dest[x] = top_row[x];
// Add these values to the mask. They were already set.
const uint8x16_t left_or_top_mask = vorrq_u8(left_mask, top_le_top_left);
// else
// dest[x] = top_left;
return vbslq_u8(left_or_top_mask, result, top_left);
}
// Generate numbered and high/low versions of top_left_dist.
#define TOP_LEFT_DIST(num) \
const uint16x8_t top_left_##num##_dist_low = vabdq_u16( \
vaddl_u8(vget_low_u8(top[num]), vget_low_u8(left)), top_left_x2); \
const uint16x8_t top_left_##num##_dist_high = vabdq_u16( \
vaddl_u8(vget_high_u8(top[num]), vget_low_u8(left)), top_left_x2)
// Generate numbered versions of XLeTopLeft with x = left.
#define LEFT_LE_TOP_LEFT(num) \
const uint8x16_t left_le_top_left_##num = \
x_le_top_left(left_##num##_dist, top_left_##num##_dist_low, \
top_left_##num##_dist_high)
// Generate numbered versions of XLeTopLeft with x = top.
#define TOP_LE_TOP_LEFT(num) \
const uint8x16_t top_le_top_left_##num = x_le_top_left( \
top_dist, top_left_##num##_dist_low, top_left_##num##_dist_high)
static inline void paeth16_plus_x_h_neon(uint8_t *dest, ptrdiff_t stride,
const uint8_t *const top_row,
const uint8_t *const left_column,
int width, int height) {
const uint8x16_t top_left = vdupq_n_u8(top_row[-1]);
const uint16x8_t top_left_x2 = vdupq_n_u16(top_row[-1] + top_row[-1]);
uint8x16_t top[4];
top[0] = vld1q_u8(top_row);
if (width > 16) {
top[1] = vld1q_u8(top_row + 16);
if (width == 64) {
top[2] = vld1q_u8(top_row + 32);
top[3] = vld1q_u8(top_row + 48);
}
}
assert(height > 0);
int y = 0;
do {
const uint8x16_t left = vdupq_n_u8(left_column[y]);
const uint8x16_t top_dist = vabdq_u8(left, top_left);
const uint8x16_t left_0_dist = vabdq_u8(top[0], top_left);
TOP_LEFT_DIST(0);
const uint8x16_t left_0_le_top = vcleq_u8(left_0_dist, top_dist);
LEFT_LE_TOP_LEFT(0);
TOP_LE_TOP_LEFT(0);
const uint8x16_t result_0 =
select_paeth(top[0], left, top_left, left_0_le_top, left_le_top_left_0,
top_le_top_left_0);
vst1q_u8(dest, result_0);
if (width > 16) {
const uint8x16_t left_1_dist = vabdq_u8(top[1], top_left);
TOP_LEFT_DIST(1);
const uint8x16_t left_1_le_top = vcleq_u8(left_1_dist, top_dist);
LEFT_LE_TOP_LEFT(1);
TOP_LE_TOP_LEFT(1);
const uint8x16_t result_1 =
select_paeth(top[1], left, top_left, left_1_le_top,
left_le_top_left_1, top_le_top_left_1);
vst1q_u8(dest + 16, result_1);
if (width == 64) {
const uint8x16_t left_2_dist = vabdq_u8(top[2], top_left);
TOP_LEFT_DIST(2);
const uint8x16_t left_2_le_top = vcleq_u8(left_2_dist, top_dist);
LEFT_LE_TOP_LEFT(2);
TOP_LE_TOP_LEFT(2);
const uint8x16_t result_2 =
select_paeth(top[2], left, top_left, left_2_le_top,
left_le_top_left_2, top_le_top_left_2);
vst1q_u8(dest + 32, result_2);
const uint8x16_t left_3_dist = vabdq_u8(top[3], top_left);
TOP_LEFT_DIST(3);
const uint8x16_t left_3_le_top = vcleq_u8(left_3_dist, top_dist);
LEFT_LE_TOP_LEFT(3);
TOP_LE_TOP_LEFT(3);
const uint8x16_t result_3 =
select_paeth(top[3], left, top_left, left_3_le_top,
left_le_top_left_3, top_le_top_left_3);
vst1q_u8(dest + 48, result_3);
}
}
dest += stride;
} while (++y != height);
}
#define PAETH_NXM_WIDE(W, H) \
void aom_paeth_predictor_##W##x##H##_neon(uint8_t *dst, ptrdiff_t stride, \
const uint8_t *above, \
const uint8_t *left) { \
paeth16_plus_x_h_neon(dst, stride, above, left, W, H); \
}
#if !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
PAETH_NXM_WIDE(16, 4)
PAETH_NXM_WIDE(16, 64)
PAETH_NXM_WIDE(32, 8)
PAETH_NXM_WIDE(64, 16)
#endif // !CONFIG_REALTIME_ONLY || CONFIG_AV1_DECODER
PAETH_NXM_WIDE(16, 8)
PAETH_NXM_WIDE(16, 16)
PAETH_NXM_WIDE(16, 32)
PAETH_NXM_WIDE(32, 16)
PAETH_NXM_WIDE(32, 32)
PAETH_NXM_WIDE(32, 64)
PAETH_NXM_WIDE(64, 32)
PAETH_NXM_WIDE(64, 64)