ref: 9134e9f8bbb4e27684c2e48936c91b67797c79f9
dir: /vpx_dsp/x86/avg_intrin_sse2.c/
/*
* Copyright (c) 2014 The WebM project authors. All Rights Reserved.
*
* Use of this source code is governed by a BSD-style license
* that can be found in the LICENSE file in the root of the source
* tree. An additional intellectual property rights grant can be found
* in the file PATENTS. All contributing project authors may
* be found in the AUTHORS file in the root of the source tree.
*/
#include <emmintrin.h>
#include "./vpx_dsp_rtcd.h"
#include "vpx_ports/mem.h"
void vpx_minmax_8x8_sse2(const uint8_t *s, int p, const uint8_t *d, int dp,
int *min, int *max) {
__m128i u0, s0, d0, diff, maxabsdiff, minabsdiff, negdiff, absdiff0, absdiff;
u0 = _mm_setzero_si128();
// Row 0
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff0 = _mm_max_epi16(diff, negdiff);
// Row 1
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(absdiff0, absdiff);
minabsdiff = _mm_min_epi16(absdiff0, absdiff);
// Row 2
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 2 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 2 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
// Row 3
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 3 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 3 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
// Row 4
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 4 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 4 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
// Row 5
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 5 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 5 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
// Row 6
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 6 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 6 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
// Row 7
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 7 * p)), u0);
d0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(d + 7 * dp)), u0);
diff = _mm_subs_epi16(s0, d0);
negdiff = _mm_subs_epi16(u0, diff);
absdiff = _mm_max_epi16(diff, negdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, absdiff);
minabsdiff = _mm_min_epi16(minabsdiff, absdiff);
maxabsdiff = _mm_max_epi16(maxabsdiff, _mm_srli_si128(maxabsdiff, 8));
maxabsdiff = _mm_max_epi16(maxabsdiff, _mm_srli_epi64(maxabsdiff, 32));
maxabsdiff = _mm_max_epi16(maxabsdiff, _mm_srli_epi64(maxabsdiff, 16));
*max = _mm_extract_epi16(maxabsdiff, 0);
minabsdiff = _mm_min_epi16(minabsdiff, _mm_srli_si128(minabsdiff, 8));
minabsdiff = _mm_min_epi16(minabsdiff, _mm_srli_epi64(minabsdiff, 32));
minabsdiff = _mm_min_epi16(minabsdiff, _mm_srli_epi64(minabsdiff, 16));
*min = _mm_extract_epi16(minabsdiff, 0);
}
unsigned int vpx_avg_8x8_sse2(const uint8_t *s, int p) {
__m128i s0, s1, u0;
unsigned int avg = 0;
u0 = _mm_setzero_si128();
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s)), u0);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 2 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 3 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 4 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 5 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 6 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 7 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s0 = _mm_adds_epu16(s0, _mm_srli_si128(s0, 8));
s0 = _mm_adds_epu16(s0, _mm_srli_epi64(s0, 32));
s0 = _mm_adds_epu16(s0, _mm_srli_epi64(s0, 16));
avg = _mm_extract_epi16(s0, 0);
return (avg + 32) >> 6;
}
unsigned int vpx_avg_4x4_sse2(const uint8_t *s, int p) {
__m128i s0, s1, u0;
unsigned int avg = 0;
u0 = _mm_setzero_si128();
s0 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s)), u0);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 2 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s1 = _mm_unpacklo_epi8(_mm_loadl_epi64((const __m128i *)(s + 3 * p)), u0);
s0 = _mm_adds_epu16(s0, s1);
s0 = _mm_adds_epu16(s0, _mm_srli_si128(s0, 4));
s0 = _mm_adds_epu16(s0, _mm_srli_epi64(s0, 16));
avg = _mm_extract_epi16(s0, 0);
return (avg + 8) >> 4;
}
static void hadamard_col8_sse2(__m128i *in, int iter) {
__m128i a0 = in[0];
__m128i a1 = in[1];
__m128i a2 = in[2];
__m128i a3 = in[3];
__m128i a4 = in[4];
__m128i a5 = in[5];
__m128i a6 = in[6];
__m128i a7 = in[7];
__m128i b0 = _mm_add_epi16(a0, a1);
__m128i b1 = _mm_sub_epi16(a0, a1);
__m128i b2 = _mm_add_epi16(a2, a3);
__m128i b3 = _mm_sub_epi16(a2, a3);
__m128i b4 = _mm_add_epi16(a4, a5);
__m128i b5 = _mm_sub_epi16(a4, a5);
__m128i b6 = _mm_add_epi16(a6, a7);
__m128i b7 = _mm_sub_epi16(a6, a7);
a0 = _mm_add_epi16(b0, b2);
a1 = _mm_add_epi16(b1, b3);
a2 = _mm_sub_epi16(b0, b2);
a3 = _mm_sub_epi16(b1, b3);
a4 = _mm_add_epi16(b4, b6);
a5 = _mm_add_epi16(b5, b7);
a6 = _mm_sub_epi16(b4, b6);
a7 = _mm_sub_epi16(b5, b7);
if (iter == 0) {
b0 = _mm_add_epi16(a0, a4);
b7 = _mm_add_epi16(a1, a5);
b3 = _mm_add_epi16(a2, a6);
b4 = _mm_add_epi16(a3, a7);
b2 = _mm_sub_epi16(a0, a4);
b6 = _mm_sub_epi16(a1, a5);
b1 = _mm_sub_epi16(a2, a6);
b5 = _mm_sub_epi16(a3, a7);
a0 = _mm_unpacklo_epi16(b0, b1);
a1 = _mm_unpacklo_epi16(b2, b3);
a2 = _mm_unpackhi_epi16(b0, b1);
a3 = _mm_unpackhi_epi16(b2, b3);
a4 = _mm_unpacklo_epi16(b4, b5);
a5 = _mm_unpacklo_epi16(b6, b7);
a6 = _mm_unpackhi_epi16(b4, b5);
a7 = _mm_unpackhi_epi16(b6, b7);
b0 = _mm_unpacklo_epi32(a0, a1);
b1 = _mm_unpacklo_epi32(a4, a5);
b2 = _mm_unpackhi_epi32(a0, a1);
b3 = _mm_unpackhi_epi32(a4, a5);
b4 = _mm_unpacklo_epi32(a2, a3);
b5 = _mm_unpacklo_epi32(a6, a7);
b6 = _mm_unpackhi_epi32(a2, a3);
b7 = _mm_unpackhi_epi32(a6, a7);
in[0] = _mm_unpacklo_epi64(b0, b1);
in[1] = _mm_unpackhi_epi64(b0, b1);
in[2] = _mm_unpacklo_epi64(b2, b3);
in[3] = _mm_unpackhi_epi64(b2, b3);
in[4] = _mm_unpacklo_epi64(b4, b5);
in[5] = _mm_unpackhi_epi64(b4, b5);
in[6] = _mm_unpacklo_epi64(b6, b7);
in[7] = _mm_unpackhi_epi64(b6, b7);
} else {
in[0] = _mm_add_epi16(a0, a4);
in[7] = _mm_add_epi16(a1, a5);
in[3] = _mm_add_epi16(a2, a6);
in[4] = _mm_add_epi16(a3, a7);
in[2] = _mm_sub_epi16(a0, a4);
in[6] = _mm_sub_epi16(a1, a5);
in[1] = _mm_sub_epi16(a2, a6);
in[5] = _mm_sub_epi16(a3, a7);
}
}
void vpx_hadamard_8x8_sse2(int16_t const *src_diff, int src_stride,
int16_t *coeff) {
__m128i src[8];
src[0] = _mm_load_si128((const __m128i *)src_diff);
src[1] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[2] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[3] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[4] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[5] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[6] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
src[7] = _mm_load_si128((const __m128i *)(src_diff += src_stride));
hadamard_col8_sse2(src, 0);
hadamard_col8_sse2(src, 1);
_mm_store_si128((__m128i *)coeff, src[0]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[1]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[2]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[3]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[4]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[5]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[6]);
coeff += 8;
_mm_store_si128((__m128i *)coeff, src[7]);
}
void vpx_hadamard_16x16_sse2(int16_t const *src_diff, int src_stride,
int16_t *coeff) {
int idx;
for (idx = 0; idx < 4; ++idx) {
int16_t const *src_ptr = src_diff + (idx >> 1) * 8 * src_stride
+ (idx & 0x01) * 8;
vpx_hadamard_8x8_sse2(src_ptr, src_stride, coeff + idx * 64);
}
for (idx = 0; idx < 64; idx += 8) {
__m128i coeff0 = _mm_load_si128((const __m128i *)coeff);
__m128i coeff1 = _mm_load_si128((const __m128i *)(coeff + 64));
__m128i coeff2 = _mm_load_si128((const __m128i *)(coeff + 128));
__m128i coeff3 = _mm_load_si128((const __m128i *)(coeff + 192));
__m128i b0 = _mm_add_epi16(coeff0, coeff1);
__m128i b1 = _mm_sub_epi16(coeff0, coeff1);
__m128i b2 = _mm_add_epi16(coeff2, coeff3);
__m128i b3 = _mm_sub_epi16(coeff2, coeff3);
b0 = _mm_srai_epi16(b0, 1);
b1 = _mm_srai_epi16(b1, 1);
b2 = _mm_srai_epi16(b2, 1);
b3 = _mm_srai_epi16(b3, 1);
coeff0 = _mm_add_epi16(b0, b2);
coeff1 = _mm_add_epi16(b1, b3);
_mm_store_si128((__m128i *)coeff, coeff0);
_mm_store_si128((__m128i *)(coeff + 64), coeff1);
coeff2 = _mm_sub_epi16(b0, b2);
coeff3 = _mm_sub_epi16(b1, b3);
_mm_store_si128((__m128i *)(coeff + 128), coeff2);
_mm_store_si128((__m128i *)(coeff + 192), coeff3);
coeff += 8;
}
}
int vpx_satd_sse2(const int16_t *coeff, int length) {
int i;
const __m128i zero = _mm_setzero_si128();
__m128i accum = zero;
for (i = 0; i < length; i += 8) {
const __m128i src_line = _mm_load_si128((const __m128i *)coeff);
const __m128i inv = _mm_sub_epi16(zero, src_line);
const __m128i abs = _mm_max_epi16(src_line, inv); // abs(src_line)
const __m128i abs_lo = _mm_unpacklo_epi16(abs, zero);
const __m128i abs_hi = _mm_unpackhi_epi16(abs, zero);
const __m128i sum = _mm_add_epi32(abs_lo, abs_hi);
accum = _mm_add_epi32(accum, sum);
coeff += 8;
}
{ // cascading summation of accum
__m128i hi = _mm_srli_si128(accum, 8);
accum = _mm_add_epi32(accum, hi);
hi = _mm_srli_epi64(accum, 32);
accum = _mm_add_epi32(accum, hi);
}
return _mm_cvtsi128_si32(accum);
}
void vpx_int_pro_row_sse2(int16_t *hbuf, uint8_t const*ref,
const int ref_stride, const int height) {
int idx;
__m128i zero = _mm_setzero_si128();
__m128i src_line = _mm_loadu_si128((const __m128i *)ref);
__m128i s0 = _mm_unpacklo_epi8(src_line, zero);
__m128i s1 = _mm_unpackhi_epi8(src_line, zero);
__m128i t0, t1;
int height_1 = height - 1;
ref += ref_stride;
for (idx = 1; idx < height_1; idx += 2) {
src_line = _mm_loadu_si128((const __m128i *)ref);
t0 = _mm_unpacklo_epi8(src_line, zero);
t1 = _mm_unpackhi_epi8(src_line, zero);
s0 = _mm_adds_epu16(s0, t0);
s1 = _mm_adds_epu16(s1, t1);
ref += ref_stride;
src_line = _mm_loadu_si128((const __m128i *)ref);
t0 = _mm_unpacklo_epi8(src_line, zero);
t1 = _mm_unpackhi_epi8(src_line, zero);
s0 = _mm_adds_epu16(s0, t0);
s1 = _mm_adds_epu16(s1, t1);
ref += ref_stride;
}
src_line = _mm_loadu_si128((const __m128i *)ref);
t0 = _mm_unpacklo_epi8(src_line, zero);
t1 = _mm_unpackhi_epi8(src_line, zero);
s0 = _mm_adds_epu16(s0, t0);
s1 = _mm_adds_epu16(s1, t1);
if (height == 64) {
s0 = _mm_srai_epi16(s0, 5);
s1 = _mm_srai_epi16(s1, 5);
} else if (height == 32) {
s0 = _mm_srai_epi16(s0, 4);
s1 = _mm_srai_epi16(s1, 4);
} else {
s0 = _mm_srai_epi16(s0, 3);
s1 = _mm_srai_epi16(s1, 3);
}
_mm_storeu_si128((__m128i *)hbuf, s0);
hbuf += 8;
_mm_storeu_si128((__m128i *)hbuf, s1);
}
int16_t vpx_int_pro_col_sse2(uint8_t const *ref, const int width) {
__m128i zero = _mm_setzero_si128();
__m128i src_line = _mm_load_si128((const __m128i *)ref);
__m128i s0 = _mm_sad_epu8(src_line, zero);
__m128i s1;
int i;
for (i = 16; i < width; i += 16) {
ref += 16;
src_line = _mm_load_si128((const __m128i *)ref);
s1 = _mm_sad_epu8(src_line, zero);
s0 = _mm_adds_epu16(s0, s1);
}
s1 = _mm_srli_si128(s0, 8);
s0 = _mm_adds_epu16(s0, s1);
return _mm_extract_epi16(s0, 0);
}
int vpx_vector_var_sse2(int16_t const *ref, int16_t const *src,
const int bwl) {
int idx;
int width = 4 << bwl;
int16_t mean;
__m128i v0 = _mm_loadu_si128((const __m128i *)ref);
__m128i v1 = _mm_load_si128((const __m128i *)src);
__m128i diff = _mm_subs_epi16(v0, v1);
__m128i sum = diff;
__m128i sse = _mm_madd_epi16(diff, diff);
ref += 8;
src += 8;
for (idx = 8; idx < width; idx += 8) {
v0 = _mm_loadu_si128((const __m128i *)ref);
v1 = _mm_load_si128((const __m128i *)src);
diff = _mm_subs_epi16(v0, v1);
sum = _mm_add_epi16(sum, diff);
v0 = _mm_madd_epi16(diff, diff);
sse = _mm_add_epi32(sse, v0);
ref += 8;
src += 8;
}
v0 = _mm_srli_si128(sum, 8);
sum = _mm_add_epi16(sum, v0);
v0 = _mm_srli_epi64(sum, 32);
sum = _mm_add_epi16(sum, v0);
v0 = _mm_srli_epi32(sum, 16);
sum = _mm_add_epi16(sum, v0);
v1 = _mm_srli_si128(sse, 8);
sse = _mm_add_epi32(sse, v1);
v1 = _mm_srli_epi64(sse, 32);
sse = _mm_add_epi32(sse, v1);
mean = _mm_extract_epi16(sum, 0);
return _mm_cvtsi128_si32(sse) - ((mean * mean) >> (bwl + 2));
}