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-rw-r--r--third_party/aom/av1/common/arm/warp_plane_neon.h367
1 files changed, 367 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/arm/warp_plane_neon.h b/third_party/aom/av1/common/arm/warp_plane_neon.h
new file mode 100644
index 0000000000..5afd72f4ab
--- /dev/null
+++ b/third_party/aom/av1/common/arm/warp_plane_neon.h
@@ -0,0 +1,367 @@
+/*
+ * Copyright (c) 2023, 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.
+ */
+#ifndef AOM_AV1_COMMON_ARM_WARP_PLANE_NEON_H_
+#define AOM_AV1_COMMON_ARM_WARP_PLANE_NEON_H_
+
+#include <assert.h>
+#include <arm_neon.h>
+#include <memory.h>
+#include <math.h>
+
+#include "aom_dsp/aom_dsp_common.h"
+#include "aom_dsp/arm/sum_neon.h"
+#include "aom_dsp/arm/transpose_neon.h"
+#include "aom_ports/mem.h"
+#include "config/av1_rtcd.h"
+#include "av1/common/warped_motion.h"
+#include "av1/common/scale.h"
+
+static INLINE int16x8_t horizontal_filter_4x1_f4(const uint8x16_t in, int sx,
+ int alpha);
+
+static INLINE int16x8_t horizontal_filter_8x1_f8(const uint8x16_t in, int sx,
+ int alpha);
+
+static INLINE int16x8_t horizontal_filter_4x1_f1(const uint8x16_t in, int sx);
+
+static INLINE int16x8_t horizontal_filter_8x1_f1(const uint8x16_t in, int sx);
+
+static INLINE void vertical_filter_4x1_f1(const int16x8_t *src, int32x4_t *res,
+ int sy);
+
+static INLINE void vertical_filter_4x1_f4(const int16x8_t *src, int32x4_t *res,
+ int sy, int gamma);
+
+static INLINE void vertical_filter_8x1_f1(const int16x8_t *src,
+ int32x4_t *res_low,
+ int32x4_t *res_high, int sy);
+
+static INLINE void vertical_filter_8x1_f8(const int16x8_t *src,
+ int32x4_t *res_low,
+ int32x4_t *res_high, int sy,
+ int gamma);
+
+static INLINE void load_filters_4(int16x8_t out[], int offset, int stride) {
+ out[0] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 0 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[1] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 1 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[2] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 2 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[3] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 3 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+}
+
+static INLINE void load_filters_8(int16x8_t out[], int offset, int stride) {
+ out[0] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 0 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[1] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 1 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[2] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 2 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[3] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 3 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[4] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 4 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[5] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 5 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[6] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 6 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+ out[7] = vld1q_s16((int16_t *)(av1_warped_filter + ((offset + 7 * stride) >>
+ WARPEDDIFF_PREC_BITS)));
+}
+
+static INLINE int clamp_iy(int iy, int height) {
+ return clamp(iy, 0, height - 1);
+}
+
+static INLINE void warp_affine_horizontal(const uint8_t *ref, int width,
+ int height, int stride, int p_width,
+ int p_height, int16_t alpha,
+ int16_t beta, const int64_t x4,
+ const int64_t y4, const int i,
+ int16x8_t tmp[]) {
+ const int bd = 8;
+ const int reduce_bits_horiz = ROUND0_BITS;
+ const int height_limit = AOMMIN(8, p_height - i) + 7;
+
+ int32_t ix4 = (int32_t)(x4 >> WARPEDMODEL_PREC_BITS);
+ int32_t iy4 = (int32_t)(y4 >> WARPEDMODEL_PREC_BITS);
+
+ int32_t sx4 = x4 & ((1 << WARPEDMODEL_PREC_BITS) - 1);
+ sx4 += alpha * (-4) + beta * (-4) + (1 << (WARPEDDIFF_PREC_BITS - 1)) +
+ (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS);
+ sx4 &= ~((1 << WARP_PARAM_REDUCE_BITS) - 1);
+
+ if (ix4 <= -7) {
+ for (int k = 0; k < height_limit; ++k) {
+ int iy = clamp_iy(iy4 + k - 7, height);
+ int16_t dup_val =
+ (1 << (bd + FILTER_BITS - reduce_bits_horiz - 1)) +
+ ref[iy * stride] * (1 << (FILTER_BITS - reduce_bits_horiz));
+ tmp[k] = vdupq_n_s16(dup_val);
+ }
+ return;
+ } else if (ix4 >= width + 6) {
+ for (int k = 0; k < height_limit; ++k) {
+ int iy = clamp_iy(iy4 + k - 7, height);
+ int16_t dup_val = (1 << (bd + FILTER_BITS - reduce_bits_horiz - 1)) +
+ ref[iy * stride + (width - 1)] *
+ (1 << (FILTER_BITS - reduce_bits_horiz));
+ tmp[k] = vdupq_n_s16(dup_val);
+ }
+ return;
+ }
+
+ static const uint8_t kIotaArr[] = { 0, 1, 2, 3, 4, 5, 6, 7,
+ 8, 9, 10, 11, 12, 13, 14, 15 };
+ const uint8x16_t indx = vld1q_u8(kIotaArr);
+
+ const int out_of_boundary_left = -(ix4 - 6);
+ const int out_of_boundary_right = (ix4 + 8) - width;
+
+#define APPLY_HORIZONTAL_SHIFT(fn, ...) \
+ do { \
+ if (out_of_boundary_left >= 0 || out_of_boundary_right >= 0) { \
+ for (int k = 0; k < height_limit; ++k) { \
+ const int iy = clamp_iy(iy4 + k - 7, height); \
+ const uint8_t *src = ref + iy * stride + ix4 - 7; \
+ uint8x16_t src_1 = vld1q_u8(src); \
+ \
+ if (out_of_boundary_left >= 0) { \
+ int limit = out_of_boundary_left + 1; \
+ uint8x16_t cmp_vec = vdupq_n_u8(out_of_boundary_left); \
+ uint8x16_t vec_dup = vdupq_n_u8(*(src + limit)); \
+ uint8x16_t mask_val = vcleq_u8(indx, cmp_vec); \
+ src_1 = vbslq_u8(mask_val, vec_dup, src_1); \
+ } \
+ if (out_of_boundary_right >= 0) { \
+ int limit = 15 - (out_of_boundary_right + 1); \
+ uint8x16_t cmp_vec = vdupq_n_u8(15 - out_of_boundary_right); \
+ uint8x16_t vec_dup = vdupq_n_u8(*(src + limit)); \
+ uint8x16_t mask_val = vcgeq_u8(indx, cmp_vec); \
+ src_1 = vbslq_u8(mask_val, vec_dup, src_1); \
+ } \
+ tmp[k] = (fn)(src_1, __VA_ARGS__); \
+ } \
+ } else { \
+ for (int k = 0; k < height_limit; ++k) { \
+ const int iy = clamp_iy(iy4 + k - 7, height); \
+ const uint8_t *src = ref + iy * stride + ix4 - 7; \
+ uint8x16_t src_1 = vld1q_u8(src); \
+ tmp[k] = (fn)(src_1, __VA_ARGS__); \
+ } \
+ } \
+ } while (0)
+
+ if (p_width == 4) {
+ if (beta == 0) {
+ if (alpha == 0) {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_4x1_f1, sx4);
+ } else {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_4x1_f4, sx4, alpha);
+ }
+ } else {
+ if (alpha == 0) {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_4x1_f1,
+ (sx4 + beta * (k - 3)));
+ } else {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_4x1_f4, (sx4 + beta * (k - 3)),
+ alpha);
+ }
+ }
+ } else {
+ if (beta == 0) {
+ if (alpha == 0) {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_8x1_f1, sx4);
+ } else {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_8x1_f8, sx4, alpha);
+ }
+ } else {
+ if (alpha == 0) {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_8x1_f1,
+ (sx4 + beta * (k - 3)));
+ } else {
+ APPLY_HORIZONTAL_SHIFT(horizontal_filter_8x1_f8, (sx4 + beta * (k - 3)),
+ alpha);
+ }
+ }
+ }
+}
+
+static INLINE void warp_affine_vertical(
+ uint8_t *pred, int p_width, int p_height, int p_stride, int is_compound,
+ uint16_t *dst, int dst_stride, int do_average, int use_dist_wtd_comp_avg,
+ int16_t gamma, int16_t delta, const int64_t y4, const int i, const int j,
+ int16x8_t tmp[], const int fwd, const int bwd) {
+ const int bd = 8;
+ const int reduce_bits_horiz = ROUND0_BITS;
+ const int offset_bits_vert = bd + 2 * FILTER_BITS - reduce_bits_horiz;
+ int add_const_vert;
+ if (is_compound) {
+ add_const_vert =
+ (1 << offset_bits_vert) + (1 << (COMPOUND_ROUND1_BITS - 1));
+ } else {
+ add_const_vert =
+ (1 << offset_bits_vert) + (1 << (2 * FILTER_BITS - ROUND0_BITS - 1));
+ }
+ const int sub_constant = (1 << (bd - 1)) + (1 << bd);
+
+ const int offset_bits = bd + 2 * FILTER_BITS - ROUND0_BITS;
+ const int res_sub_const =
+ (1 << (2 * FILTER_BITS - ROUND0_BITS - COMPOUND_ROUND1_BITS - 1)) -
+ (1 << (offset_bits - COMPOUND_ROUND1_BITS)) -
+ (1 << (offset_bits - COMPOUND_ROUND1_BITS - 1));
+
+ int32_t sy4 = y4 & ((1 << WARPEDMODEL_PREC_BITS) - 1);
+ sy4 += gamma * (-4) + delta * (-4) + (1 << (WARPEDDIFF_PREC_BITS - 1)) +
+ (WARPEDPIXEL_PREC_SHIFTS << WARPEDDIFF_PREC_BITS);
+ sy4 &= ~((1 << WARP_PARAM_REDUCE_BITS) - 1);
+
+ if (p_width > 4) {
+ for (int k = -4; k < AOMMIN(4, p_height - i - 4); ++k) {
+ int sy = sy4 + delta * (k + 4);
+ const int16x8_t *v_src = tmp + (k + 4);
+
+ int32x4_t res_lo, res_hi;
+ if (gamma == 0) {
+ vertical_filter_8x1_f1(v_src, &res_lo, &res_hi, sy);
+ } else {
+ vertical_filter_8x1_f8(v_src, &res_lo, &res_hi, sy, gamma);
+ }
+
+ res_lo = vaddq_s32(res_lo, vdupq_n_s32(add_const_vert));
+ res_hi = vaddq_s32(res_hi, vdupq_n_s32(add_const_vert));
+
+ if (is_compound) {
+ uint16_t *const p = (uint16_t *)&dst[(i + k + 4) * dst_stride + j];
+ int16x8_t res_s16 =
+ vcombine_s16(vshrn_n_s32(res_lo, COMPOUND_ROUND1_BITS),
+ vshrn_n_s32(res_hi, COMPOUND_ROUND1_BITS));
+ if (do_average) {
+ int16x8_t tmp16 = vreinterpretq_s16_u16(vld1q_u16(p));
+ if (use_dist_wtd_comp_avg) {
+ int32x4_t tmp32_lo = vmull_n_s16(vget_low_s16(tmp16), fwd);
+ int32x4_t tmp32_hi = vmull_n_s16(vget_high_s16(tmp16), fwd);
+ tmp32_lo = vmlal_n_s16(tmp32_lo, vget_low_s16(res_s16), bwd);
+ tmp32_hi = vmlal_n_s16(tmp32_hi, vget_high_s16(res_s16), bwd);
+ tmp16 = vcombine_s16(vshrn_n_s32(tmp32_lo, DIST_PRECISION_BITS),
+ vshrn_n_s32(tmp32_hi, DIST_PRECISION_BITS));
+ } else {
+ tmp16 = vhaddq_s16(tmp16, res_s16);
+ }
+ int16x8_t res = vaddq_s16(tmp16, vdupq_n_s16(res_sub_const));
+ uint8x8_t res8 = vqshrun_n_s16(
+ res, 2 * FILTER_BITS - ROUND0_BITS - COMPOUND_ROUND1_BITS);
+ vst1_u8(&pred[(i + k + 4) * p_stride + j], res8);
+ } else {
+ vst1q_u16(p, vreinterpretq_u16_s16(res_s16));
+ }
+ } else {
+ int16x8_t res16 =
+ vcombine_s16(vshrn_n_s32(res_lo, 2 * FILTER_BITS - ROUND0_BITS),
+ vshrn_n_s32(res_hi, 2 * FILTER_BITS - ROUND0_BITS));
+ res16 = vsubq_s16(res16, vdupq_n_s16(sub_constant));
+
+ uint8_t *const p = (uint8_t *)&pred[(i + k + 4) * p_stride + j];
+ vst1_u8(p, vqmovun_s16(res16));
+ }
+ }
+ } else {
+ // p_width == 4
+ for (int k = -4; k < AOMMIN(4, p_height - i - 4); ++k) {
+ int sy = sy4 + delta * (k + 4);
+ const int16x8_t *v_src = tmp + (k + 4);
+
+ int32x4_t res_lo;
+ if (gamma == 0) {
+ vertical_filter_4x1_f1(v_src, &res_lo, sy);
+ } else {
+ vertical_filter_4x1_f4(v_src, &res_lo, sy, gamma);
+ }
+
+ res_lo = vaddq_s32(res_lo, vdupq_n_s32(add_const_vert));
+
+ if (is_compound) {
+ uint16_t *const p = (uint16_t *)&dst[(i + k + 4) * dst_stride + j];
+
+ int16x4_t res_lo_s16 = vshrn_n_s32(res_lo, COMPOUND_ROUND1_BITS);
+ if (do_average) {
+ uint8_t *const dst8 = &pred[(i + k + 4) * p_stride + j];
+ int16x4_t tmp16_lo = vreinterpret_s16_u16(vld1_u16(p));
+ if (use_dist_wtd_comp_avg) {
+ int32x4_t tmp32_lo = vmull_n_s16(tmp16_lo, fwd);
+ tmp32_lo = vmlal_n_s16(tmp32_lo, res_lo_s16, bwd);
+ tmp16_lo = vshrn_n_s32(tmp32_lo, DIST_PRECISION_BITS);
+ } else {
+ tmp16_lo = vhadd_s16(tmp16_lo, res_lo_s16);
+ }
+ int16x4_t res = vadd_s16(tmp16_lo, vdup_n_s16(res_sub_const));
+ uint8x8_t res8 = vqshrun_n_s16(
+ vcombine_s16(res, vdup_n_s16(0)),
+ 2 * FILTER_BITS - ROUND0_BITS - COMPOUND_ROUND1_BITS);
+ vst1_lane_u32((uint32_t *)dst8, vreinterpret_u32_u8(res8), 0);
+ } else {
+ uint16x4_t res_u16_low = vreinterpret_u16_s16(res_lo_s16);
+ vst1_u16(p, res_u16_low);
+ }
+ } else {
+ int16x4_t res16 = vshrn_n_s32(res_lo, 2 * FILTER_BITS - ROUND0_BITS);
+ res16 = vsub_s16(res16, vdup_n_s16(sub_constant));
+
+ uint8_t *const p = (uint8_t *)&pred[(i + k + 4) * p_stride + j];
+ uint8x8_t val = vqmovun_s16(vcombine_s16(res16, vdup_n_s16(0)));
+ vst1_lane_u32((uint32_t *)p, vreinterpret_u32_u8(val), 0);
+ }
+ }
+ }
+}
+
+static INLINE void av1_warp_affine_common(
+ const int32_t *mat, const uint8_t *ref, int width, int height, int stride,
+ uint8_t *pred, int p_col, int p_row, int p_width, int p_height,
+ int p_stride, int subsampling_x, int subsampling_y,
+ ConvolveParams *conv_params, int16_t alpha, int16_t beta, int16_t gamma,
+ int16_t delta) {
+ const int w0 = conv_params->fwd_offset;
+ const int w1 = conv_params->bck_offset;
+ const int is_compound = conv_params->is_compound;
+ uint16_t *const dst = conv_params->dst;
+ const int dst_stride = conv_params->dst_stride;
+ const int do_average = conv_params->do_average;
+ const int use_dist_wtd_comp_avg = conv_params->use_dist_wtd_comp_avg;
+
+ assert(IMPLIES(is_compound, dst != NULL));
+ assert(IMPLIES(do_average, is_compound));
+
+ for (int i = 0; i < p_height; i += 8) {
+ for (int j = 0; j < p_width; j += 8) {
+ const int32_t src_x = (p_col + j + 4) << subsampling_x;
+ const int32_t src_y = (p_row + i + 4) << subsampling_y;
+ const int64_t dst_x =
+ (int64_t)mat[2] * src_x + (int64_t)mat[3] * src_y + (int64_t)mat[0];
+ const int64_t dst_y =
+ (int64_t)mat[4] * src_x + (int64_t)mat[5] * src_y + (int64_t)mat[1];
+
+ const int64_t x4 = dst_x >> subsampling_x;
+ const int64_t y4 = dst_y >> subsampling_y;
+
+ int16x8_t tmp[15];
+ warp_affine_horizontal(ref, width, height, stride, p_width, p_height,
+ alpha, beta, x4, y4, i, tmp);
+ warp_affine_vertical(pred, p_width, p_height, p_stride, is_compound, dst,
+ dst_stride, do_average, use_dist_wtd_comp_avg, gamma,
+ delta, y4, i, j, tmp, w0, w1);
+ }
+ }
+}
+
+#endif // AOM_AV1_COMMON_ARM_WARP_PLANE_NEON_H_
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-27 07:46:21 +0000