ref: 02deeea447eda4ea76ce97ae3ae6aed8bbfd12a3
dir: /vp9/encoder/x86/vp9_highbd_block_error_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 <stdio.h>
#include "vp9/common/vp9_common.h"
int64_t vp9_highbd_block_error_sse2(tran_low_t *coeff, tran_low_t *dqcoeff,
intptr_t block_size, int64_t *ssz,
int bps) {
int i, j, test;
uint32_t temp[4];
__m128i max, min, cmp0, cmp1, cmp2, cmp3;
int64_t error = 0, sqcoeff = 0;
const int shift = 2 * (bps - 8);
const int rounding = shift > 0 ? 1 << (shift - 1) : 0;
for (i = 0; i < block_size; i += 8) {
// Load the data into xmm registers
__m128i mm_coeff = _mm_load_si128((__m128i *)(coeff + i));
__m128i mm_coeff2 = _mm_load_si128((__m128i *)(coeff + i + 4));
__m128i mm_dqcoeff = _mm_load_si128((__m128i *)(dqcoeff + i));
__m128i mm_dqcoeff2 = _mm_load_si128((__m128i *)(dqcoeff + i + 4));
// Check if any values require more than 15 bit
max = _mm_set1_epi32(0x3fff);
min = _mm_set1_epi32(0xffffc000);
cmp0 = _mm_xor_si128(_mm_cmpgt_epi32(mm_coeff, max),
_mm_cmplt_epi32(mm_coeff, min));
cmp1 = _mm_xor_si128(_mm_cmpgt_epi32(mm_coeff2, max),
_mm_cmplt_epi32(mm_coeff2, min));
cmp2 = _mm_xor_si128(_mm_cmpgt_epi32(mm_dqcoeff, max),
_mm_cmplt_epi32(mm_dqcoeff, min));
cmp3 = _mm_xor_si128(_mm_cmpgt_epi32(mm_dqcoeff2, max),
_mm_cmplt_epi32(mm_dqcoeff2, min));
test = _mm_movemask_epi8(
_mm_or_si128(_mm_or_si128(cmp0, cmp1), _mm_or_si128(cmp2, cmp3)));
if (!test) {
__m128i mm_diff, error_sse2, sqcoeff_sse2;
mm_coeff = _mm_packs_epi32(mm_coeff, mm_coeff2);
mm_dqcoeff = _mm_packs_epi32(mm_dqcoeff, mm_dqcoeff2);
mm_diff = _mm_sub_epi16(mm_coeff, mm_dqcoeff);
error_sse2 = _mm_madd_epi16(mm_diff, mm_diff);
sqcoeff_sse2 = _mm_madd_epi16(mm_coeff, mm_coeff);
_mm_storeu_si128((__m128i *)temp, error_sse2);
error = error + temp[0] + temp[1] + temp[2] + temp[3];
_mm_storeu_si128((__m128i *)temp, sqcoeff_sse2);
sqcoeff += temp[0] + temp[1] + temp[2] + temp[3];
} else {
for (j = 0; j < 8; j++) {
const int64_t diff = coeff[i + j] - dqcoeff[i + j];
error += diff * diff;
sqcoeff += (int64_t)coeff[i + j] * (int64_t)coeff[i + j];
}
}
}
assert(error >= 0 && sqcoeff >= 0);
error = (error + rounding) >> shift;
sqcoeff = (sqcoeff + rounding) >> shift;
*ssz = sqcoeff;
return error;
}