154 lines
5.8 KiB
C
154 lines
5.8 KiB
C
/*
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* Copyright (c) 2020, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <arm_neon.h>
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#include <assert.h>
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#include "aom/aom_integer.h"
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#include "aom_dsp/arm/sum_neon.h"
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DECLARE_ALIGNED(16, const int8_t,
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av1_filter_intra_taps_neon[FILTER_INTRA_MODES][8][8]) = {
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{
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{ -6, 0, 0, 0, -5, 10, 0, 0 },
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{ 10, 0, 12, 0, 2, 0, 9, 0 },
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{ -3, 1, 0, 0, -3, 1, 10, 0 },
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{ 1, 10, 7, 0, 1, 2, 5, 0 },
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{ -4, 0, 0, 12, -3, 6, 0, 9 },
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{ 6, 0, 2, 0, 2, 0, 2, 0 },
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{ -3, 2, 0, 7, -3, 2, 6, 5 },
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{ 2, 6, 2, 0, 1, 2, 3, 0 },
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},
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{
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{ -10, 0, 0, 0, -6, 16, 0, 0 },
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{ 16, 0, 10, 0, 0, 0, 6, 0 },
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{ -4, 0, 0, 0, -2, 0, 16, 0 },
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{ 0, 16, 4, 0, 0, 0, 2, 0 },
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{ -10, 0, 0, 10, -6, 16, 0, 6 },
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{ 16, 0, 0, 0, 0, 0, 0, 0 },
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{ -4, 0, 0, 4, -2, 0, 16, 2 },
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{ 0, 16, 0, 0, 0, 0, 0, 0 },
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},
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{
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{ -8, 0, 0, 0, -8, 8, 0, 0 },
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{ 8, 0, 16, 0, 0, 0, 16, 0 },
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{ -8, 0, 0, 0, -8, 0, 8, 0 },
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{ 0, 8, 16, 0, 0, 0, 16, 0 },
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{ -4, 0, 0, 16, -4, 4, 0, 16 },
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{ 4, 0, 0, 0, 0, 0, 0, 0 },
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{ -4, 0, 0, 16, -4, 0, 4, 16 },
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{ 0, 4, 0, 0, 0, 0, 0, 0 },
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},
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{
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{ -2, 0, 0, 0, -1, 8, 0, 0 },
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{ 8, 0, 10, 0, 3, 0, 6, 0 },
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{ -1, 3, 0, 0, 0, 2, 8, 0 },
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{ 2, 8, 4, 0, 1, 3, 2, 0 },
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{ -1, 0, 0, 10, -1, 4, 0, 6 },
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{ 4, 0, 3, 0, 3, 0, 4, 0 },
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{ -1, 3, 0, 4, -1, 2, 4, 3 },
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{ 2, 4, 4, 0, 2, 3, 3, 0 },
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},
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{
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{ -12, 0, 0, 0, -10, 14, 0, 0 },
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{ 14, 0, 14, 0, 0, 0, 12, 0 },
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{ -9, 0, 0, 0, -8, 0, 14, 0 },
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{ 0, 14, 11, 0, 0, 0, 10, 0 },
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{ -10, 0, 0, 14, -9, 12, 0, 12 },
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{ 12, 0, 0, 0, 1, 0, 0, 0 },
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{ -8, 0, 0, 11, -7, 0, 12, 9 },
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{ 0, 12, 1, 0, 0, 1, 1, 0 },
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},
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};
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#define FILTER_INTRA_SCALE_BITS 4
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#define SHIFT_INTRA_SCALE_BITS 15 - FILTER_INTRA_SCALE_BITS
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#define MASK_LOW \
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0x604020006040200 // (0 | (2 << 8) | (4 << 16) | (6 << 24)) x 2
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#define MASK_HIGH \
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0x705030107050301 // (1 | (3 << 8) | (5 << 16) | (7 << 24)) x 2
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void av1_filter_intra_predictor_neon(uint8_t *dst, ptrdiff_t stride,
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TX_SIZE tx_size, const uint8_t *above,
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const uint8_t *left, int mode) {
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int r, c;
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uint8_t buffer[33][33];
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const int bw = tx_size_wide[tx_size];
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const int bh = tx_size_high[tx_size];
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const int8x16_t f1f0 = vld1q_s8(av1_filter_intra_taps_neon[mode][0]);
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const int8x16_t f3f2 = vld1q_s8(av1_filter_intra_taps_neon[mode][2]);
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const int8x16_t f5f4 = vld1q_s8(av1_filter_intra_taps_neon[mode][4]);
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const int8x16_t f7f6 = vld1q_s8(av1_filter_intra_taps_neon[mode][6]);
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const int16x8_t f1f0_lo = vmovl_s8(vget_low_s8(f1f0));
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const int16x8_t f1f0_hi = vmovl_s8(vget_high_s8(f1f0));
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const int16x8_t f3f2_lo = vmovl_s8(vget_low_s8(f3f2));
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const int16x8_t f3f2_hi = vmovl_s8(vget_high_s8(f3f2));
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const int16x8_t f5f4_lo = vmovl_s8(vget_low_s8(f5f4));
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const int16x8_t f5f4_hi = vmovl_s8(vget_high_s8(f5f4));
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const int16x8_t f7f6_lo = vmovl_s8(vget_low_s8(f7f6));
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const int16x8_t f7f6_hi = vmovl_s8(vget_high_s8(f7f6));
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const uint8x8_t vmask_low = vcreate_u8(MASK_LOW);
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const uint8x8_t vmask_high = vcreate_u8(MASK_HIGH);
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assert(bw <= 32 && bh <= 32);
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for (r = 0; r < bh; ++r) buffer[r + 1][0] = left[r];
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memcpy(buffer[0], &above[-1], (bw + 1) * sizeof(uint8_t));
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for (r = 1; r < bh + 1; r += 2) {
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for (c = 1; c < bw + 1; c += 4) {
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DECLARE_ALIGNED(16, uint8_t, p[8]);
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memcpy(p, &buffer[r - 1][c - 1], 5 * sizeof(uint8_t));
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p[5] = buffer[r][c - 1];
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p[6] = buffer[r + 1][c - 1];
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p[7] = 0;
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const uint8x8_t p_b = vld1_u8(p);
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const uint16x8_t p_b_lo = vmovl_u8(vtbl1_u8(p_b, vmask_low));
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const uint16x8_t p_b_hi = vmovl_u8(vtbl1_u8(p_b, vmask_high));
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int16x8_t out_01 = vmulq_s16(vreinterpretq_s16_u16(p_b_lo), f1f0_lo);
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out_01 = vmlaq_s16(out_01, vreinterpretq_s16_u16(p_b_hi), f1f0_hi);
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int16x8_t out_23 = vmulq_s16(vreinterpretq_s16_u16(p_b_lo), f3f2_lo);
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out_23 = vmlaq_s16(out_23, vreinterpretq_s16_u16(p_b_hi), f3f2_hi);
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int16x8_t out_45 = vmulq_s16(vreinterpretq_s16_u16(p_b_lo), f5f4_lo);
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out_45 = vmlaq_s16(out_45, vreinterpretq_s16_u16(p_b_hi), f5f4_hi);
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int16x8_t out_67 = vmulq_s16(vreinterpretq_s16_u16(p_b_lo), f7f6_lo);
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out_67 = vmlaq_s16(out_67, vreinterpretq_s16_u16(p_b_hi), f7f6_hi);
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#if defined(__aarch64__)
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const int16x8_t out_0123 = vpaddq_s16(out_01, out_23);
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const int16x8_t out_4567 = vpaddq_s16(out_45, out_67);
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const int16x8_t out_01234567 = vpaddq_s16(out_0123, out_4567);
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#else
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const int16x8_t out_0123 = vcombine_s16(vqmovn_s32(vpaddlq_s16(out_01)),
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vqmovn_s32(vpaddlq_s16(out_23)));
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const int16x8_t out_4567 = vcombine_s16(vqmovn_s32(vpaddlq_s16(out_45)),
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vqmovn_s32(vpaddlq_s16(out_67)));
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const int16x8_t out_01234567 = vcombine_s16(
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vqmovn_s32(vpaddlq_s16(out_0123)), vqmovn_s32(vpaddlq_s16(out_4567)));
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#endif // (__aarch64__)
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const uint32x2_t out_r =
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vreinterpret_u32_u8(vqmovun_s16(vrshrq_n_s16(out_01234567, 4)));
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// Storing
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vst1_lane_u32((uint32_t *)&buffer[r][c], out_r, 0);
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vst1_lane_u32((uint32_t *)&buffer[r + 1][c], out_r, 1);
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}
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}
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for (r = 0; r < bh; ++r) {
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memcpy(dst, &buffer[r + 1][1], bw * sizeof(uint8_t));
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dst += stride;
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}
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}
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