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/*
* Copyright (c) 2017, Alliance for Open Media. All rights reserved
*
* This source code is subject to the terms of the BSD 2 Clause License and
* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
* was not distributed with this source code in the LICENSE file, you can
* obtain it at www.aomedia.org/license/software. If the Alliance for Open
* Media Patent License 1.0 was not distributed with this source code in the
* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
*/
#include <assert.h>
#include <smmintrin.h>
#include "config/aom_config.h"
#include "config/av1_rtcd.h"
void av1_filter_intra_edge_sse4_1(uint8_t *p, int sz, int strength) {
if (!strength) return;
DECLARE_ALIGNED(16, static const int8_t, kern[3][16]) = {
{ 4, 8, 4, 0, 4, 8, 4, 0, 4, 8, 4, 0, 4, 8, 4, 0 }, // strength 1: 4,8,4
{ 5, 6, 5, 0, 5, 6, 5, 0, 5, 6, 5, 0, 5, 6, 5, 0 }, // strength 2: 5,6,5
{ 2, 4, 4, 4, 2, 0, 0, 0, 2, 4, 4, 4, 2, 0, 0, 0 } // strength 3: 2,4,4,4,2
};
DECLARE_ALIGNED(16, static const int8_t, v_const[5][16]) = {
{ 0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6 },
{ 4, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10 },
{ 0, 1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 4, 5, 6, 7, 8 },
{ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 },
};
// Extend the first and last samples to simplify the loop for the 5-tap case
p[-1] = p[0];
__m128i last = _mm_set1_epi8(p[sz - 1]);
_mm_storeu_si128((__m128i *)&p[sz], last);
// Adjust input pointer for filter support area
uint8_t *in = (strength == 3) ? p - 1 : p;
// Avoid modifying first sample
uint8_t *out = p + 1;
int len = sz - 1;
const int use_3tap_filter = (strength < 3);
if (use_3tap_filter) {
__m128i coef0 = _mm_lddqu_si128((__m128i const *)kern[strength - 1]);
__m128i shuf0 = _mm_lddqu_si128((__m128i const *)v_const[0]);
__m128i shuf1 = _mm_lddqu_si128((__m128i const *)v_const[1]);
__m128i iden = _mm_lddqu_si128((__m128i *)v_const[3]);
__m128i in0 = _mm_lddqu_si128((__m128i *)in);
while (len > 0) {
int n_out = (len < 8) ? len : 8;
__m128i d0 = _mm_shuffle_epi8(in0, shuf0);
__m128i d1 = _mm_shuffle_epi8(in0, shuf1);
d0 = _mm_maddubs_epi16(d0, coef0);
d1 = _mm_maddubs_epi16(d1, coef0);
d0 = _mm_hadd_epi16(d0, d1);
__m128i eight = _mm_set1_epi16(8);
d0 = _mm_add_epi16(d0, eight);
d0 = _mm_srai_epi16(d0, 4);
d0 = _mm_packus_epi16(d0, d0);
__m128i out0 = _mm_lddqu_si128((__m128i *)out);
__m128i n0 = _mm_set1_epi8(n_out);
__m128i mask = _mm_cmpgt_epi8(n0, iden);
out0 = _mm_blendv_epi8(out0, d0, mask);
_mm_storel_epi64((__m128i *)out, out0);
__m128i in1 = _mm_lddqu_si128((__m128i *)(in + 16));
in0 = _mm_alignr_epi8(in1, in0, 8);
in += 8;
out += 8;
len -= n_out;
}
} else { // 5-tap filter
__m128i coef0 = _mm_lddqu_si128((__m128i const *)kern[strength - 1]);
__m128i two = _mm_set1_epi8(2);
__m128i shuf_a = _mm_lddqu_si128((__m128i const *)v_const[2]);
__m128i shuf_b = _mm_add_epi8(shuf_a, two);
__m128i shuf_c = _mm_add_epi8(shuf_b, two);
__m128i shuf_d = _mm_add_epi8(shuf_c, two);
__m128i iden = _mm_lddqu_si128((__m128i *)v_const[3]);
__m128i in0 = _mm_lddqu_si128((__m128i *)in);
while (len > 0) {
int n_out = (len < 8) ? len : 8;
__m128i d0 = _mm_shuffle_epi8(in0, shuf_a);
__m128i d1 = _mm_shuffle_epi8(in0, shuf_b);
__m128i d2 = _mm_shuffle_epi8(in0, shuf_c);
__m128i d3 = _mm_shuffle_epi8(in0, shuf_d);
d0 = _mm_maddubs_epi16(d0, coef0);
d1 = _mm_maddubs_epi16(d1, coef0);
d2 = _mm_maddubs_epi16(d2, coef0);
d3 = _mm_maddubs_epi16(d3, coef0);
d0 = _mm_hadd_epi16(d0, d1);
d2 = _mm_hadd_epi16(d2, d3);
d0 = _mm_hadd_epi16(d0, d2);
__m128i eight = _mm_set1_epi16(8);
d0 = _mm_add_epi16(d0, eight);
d0 = _mm_srai_epi16(d0, 4);
d0 = _mm_packus_epi16(d0, d0);
__m128i out0 = _mm_lddqu_si128((__m128i *)out);
__m128i n0 = _mm_set1_epi8(n_out);
__m128i mask = _mm_cmpgt_epi8(n0, iden);
out0 = _mm_blendv_epi8(out0, d0, mask);
_mm_storel_epi64((__m128i *)out, out0);
__m128i in1 = _mm_lddqu_si128((__m128i *)(in + 16));
in0 = _mm_alignr_epi8(in1, in0, 8);
in += 8;
out += 8;
len -= n_out;
}
}
}
void av1_filter_intra_edge_high_sse4_1(uint16_t *p, int sz, int strength) {
if (!strength) return;
DECLARE_ALIGNED(16, static const int16_t, kern[3][8]) = {
{ 4, 8, 4, 8, 4, 8, 4, 8 }, // strength 1: 4,8,4
{ 5, 6, 5, 6, 5, 6, 5, 6 }, // strength 2: 5,6,5
{ 2, 4, 2, 4, 2, 4, 2, 4 } // strength 3: 2,4,4,4,2
};
DECLARE_ALIGNED(16, static const int16_t,
v_const[1][8]) = { { 0, 1, 2, 3, 4, 5, 6, 7 } };
// Extend the first and last samples to simplify the loop for the 5-tap case
p[-1] = p[0];
__m128i last = _mm_set1_epi16(p[sz - 1]);
_mm_storeu_si128((__m128i *)&p[sz], last);
// Adjust input pointer for filter support area
uint16_t *in = (strength == 3) ? p - 1 : p;
// Avoid modifying first sample
uint16_t *out = p + 1;
int len = sz - 1;
const int use_3tap_filter = (strength < 3);
if (use_3tap_filter) {
__m128i coef0 = _mm_lddqu_si128((__m128i const *)kern[strength - 1]);
__m128i iden = _mm_lddqu_si128((__m128i *)v_const[0]);
__m128i in0 = _mm_lddqu_si128((__m128i *)&in[0]);
__m128i in8 = _mm_lddqu_si128((__m128i *)&in[8]);
while (len > 0) {
int n_out = (len < 8) ? len : 8;
__m128i in1 = _mm_alignr_epi8(in8, in0, 2);
__m128i in2 = _mm_alignr_epi8(in8, in0, 4);
__m128i in02 = _mm_add_epi16(in0, in2);
__m128i d0 = _mm_unpacklo_epi16(in02, in1);
__m128i d1 = _mm_unpackhi_epi16(in02, in1);
d0 = _mm_mullo_epi16(d0, coef0);
d1 = _mm_mullo_epi16(d1, coef0);
d0 = _mm_hadd_epi16(d0, d1);
__m128i eight = _mm_set1_epi16(8);
d0 = _mm_add_epi16(d0, eight);
d0 = _mm_srli_epi16(d0, 4);
__m128i out0 = _mm_lddqu_si128((__m128i *)out);
__m128i n0 = _mm_set1_epi16(n_out);
__m128i mask = _mm_cmpgt_epi16(n0, iden);
out0 = _mm_blendv_epi8(out0, d0, mask);
_mm_storeu_si128((__m128i *)out, out0);
in += 8;
in0 = in8;
in8 = _mm_lddqu_si128((__m128i *)&in[8]);
out += 8;
len -= n_out;
}
} else { // 5-tap filter
__m128i coef0 = _mm_lddqu_si128((__m128i const *)kern[strength - 1]);
__m128i iden = _mm_lddqu_si128((__m128i *)v_const[0]);
__m128i in0 = _mm_lddqu_si128((__m128i *)&in[0]);
__m128i in8 = _mm_lddqu_si128((__m128i *)&in[8]);
while (len > 0) {
int n_out = (len < 8) ? len : 8;
__m128i in1 = _mm_alignr_epi8(in8, in0, 2);
__m128i in2 = _mm_alignr_epi8(in8, in0, 4);
__m128i in3 = _mm_alignr_epi8(in8, in0, 6);
__m128i in4 = _mm_alignr_epi8(in8, in0, 8);
__m128i in04 = _mm_add_epi16(in0, in4);
__m128i in123 = _mm_add_epi16(in1, in2);
in123 = _mm_add_epi16(in123, in3);
__m128i d0 = _mm_unpacklo_epi16(in04, in123);
__m128i d1 = _mm_unpackhi_epi16(in04, in123);
d0 = _mm_mullo_epi16(d0, coef0);
d1 = _mm_mullo_epi16(d1, coef0);
d0 = _mm_hadd_epi16(d0, d1);
__m128i eight = _mm_set1_epi16(8);
d0 = _mm_add_epi16(d0, eight);
d0 = _mm_srli_epi16(d0, 4);
__m128i out0 = _mm_lddqu_si128((__m128i *)out);
__m128i n0 = _mm_set1_epi16(n_out);
__m128i mask = _mm_cmpgt_epi16(n0, iden);
out0 = _mm_blendv_epi8(out0, d0, mask);
_mm_storeu_si128((__m128i *)out, out0);
in += 8;
in0 = in8;
in8 = _mm_lddqu_si128((__m128i *)&in[8]);
out += 8;
len -= n_out;
}
}
}
void av1_upsample_intra_edge_sse4_1(uint8_t *p, int sz) {
// interpolate half-sample positions
assert(sz <= 24);
DECLARE_ALIGNED(16, static const int8_t, kernel[1][16]) = {
{ -1, 9, 9, -1, -1, 9, 9, -1, -1, 9, 9, -1, -1, 9, 9, -1 }
};
DECLARE_ALIGNED(16, static const int8_t, v_const[2][16]) = {
{ 0, 1, 2, 3, 1, 2, 3, 4, 2, 3, 4, 5, 3, 4, 5, 6 },
{ 4, 5, 6, 7, 5, 6, 7, 8, 6, 7, 8, 9, 7, 8, 9, 10 }
};
// Extend first/last samples (upper-left p[-1], last p[sz-1])
// to support 4-tap filter
p[-2] = p[-1];
p[sz] = p[sz - 1];
uint8_t *in = &p[-2];
uint8_t *out = &p[-2];
int n = sz + 1; // Input length including upper-left sample
__m128i in0 = _mm_lddqu_si128((__m128i *)&in[0]);
__m128i in16 = _mm_lddqu_si128((__m128i *)&in[16]);
__m128i coef0 = _mm_lddqu_si128((__m128i *)kernel[0]);
__m128i shuf0 = _mm_lddqu_si128((__m128i *)v_const[0]);
__m128i shuf1 = _mm_lddqu_si128((__m128i *)v_const[1]);
while (n > 0) {
__m128i in8 = _mm_alignr_epi8(in16, in0, 8);
__m128i d0 = _mm_shuffle_epi8(in0, shuf0);
__m128i d1 = _mm_shuffle_epi8(in0, shuf1);
__m128i d2 = _mm_shuffle_epi8(in8, shuf0);
__m128i d3 = _mm_shuffle_epi8(in8, shuf1);
d0 = _mm_maddubs_epi16(d0, coef0);
d1 = _mm_maddubs_epi16(d1, coef0);
d2 = _mm_maddubs_epi16(d2, coef0);
d3 = _mm_maddubs_epi16(d3, coef0);
d0 = _mm_hadd_epi16(d0, d1);
d2 = _mm_hadd_epi16(d2, d3);
__m128i eight = _mm_set1_epi16(8);
d0 = _mm_add_epi16(d0, eight);
d2 = _mm_add_epi16(d2, eight);
d0 = _mm_srai_epi16(d0, 4);
d2 = _mm_srai_epi16(d2, 4);
d0 = _mm_packus_epi16(d0, d2);
__m128i in1 = _mm_alignr_epi8(in16, in0, 1);
__m128i out0 = _mm_unpacklo_epi8(in1, d0);
__m128i out1 = _mm_unpackhi_epi8(in1, d0);
_mm_storeu_si128((__m128i *)&out[0], out0);
_mm_storeu_si128((__m128i *)&out[16], out1);
in0 = in16;
in16 = _mm_setzero_si128();
out += 32;
n -= 16;
}
}
void av1_upsample_intra_edge_high_sse4_1(uint16_t *p, int sz, int bd) {
// interpolate half-sample positions
assert(sz <= 24);
DECLARE_ALIGNED(16, static const int16_t,
kernel[1][8]) = { { -1, 9, -1, 9, -1, 9, -1, 9 } };
// Extend first/last samples (upper-left p[-1], last p[sz-1])
// to support 4-tap filter
p[-2] = p[-1];
p[sz] = p[sz - 1];
uint16_t *in = &p[-2];
uint16_t *out = in;
int n = sz + 1;
__m128i in0 = _mm_lddqu_si128((__m128i *)&in[0]);
__m128i in8 = _mm_lddqu_si128((__m128i *)&in[8]);
__m128i in16 = _mm_lddqu_si128((__m128i *)&in[16]);
__m128i in24 = _mm_lddqu_si128((__m128i *)&in[24]);
while (n > 0) {
__m128i in1 = _mm_alignr_epi8(in8, in0, 2);
__m128i in2 = _mm_alignr_epi8(in8, in0, 4);
__m128i in3 = _mm_alignr_epi8(in8, in0, 6);
__m128i sum0 = _mm_add_epi16(in0, in3);
__m128i sum1 = _mm_add_epi16(in1, in2);
__m128i d0 = _mm_unpacklo_epi16(sum0, sum1);
__m128i d1 = _mm_unpackhi_epi16(sum0, sum1);
__m128i coef0 = _mm_lddqu_si128((__m128i *)kernel[0]);
d0 = _mm_madd_epi16(d0, coef0);
d1 = _mm_madd_epi16(d1, coef0);
__m128i eight = _mm_set1_epi32(8);
d0 = _mm_add_epi32(d0, eight);
d1 = _mm_add_epi32(d1, eight);
d0 = _mm_srai_epi32(d0, 4);
d1 = _mm_srai_epi32(d1, 4);
d0 = _mm_packus_epi32(d0, d1);
__m128i max0 = _mm_set1_epi16((1 << bd) - 1);
d0 = _mm_min_epi16(d0, max0);
__m128i out0 = _mm_unpacklo_epi16(in1, d0);
__m128i out1 = _mm_unpackhi_epi16(in1, d0);
_mm_storeu_si128((__m128i *)&out[0], out0);
_mm_storeu_si128((__m128i *)&out[8], out1);
in0 = in8;
in8 = in16;
in16 = in24;
in24 = _mm_setzero_si128();
out += 16;
n -= 8;
}
}
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