ref: da7c5beded832b43231ebe961bcfa5afccd4d3cf
dir: /vpx_dsp/mips/sum_squares_msa.c/
/*
* Copyright (c) 2017 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 "./vpx_dsp_rtcd.h"
#include "./macros_msa.h"
uint64_t vpx_sum_squares_2d_i16_msa(const int16_t *src, int src_stride,
int size) {
int row, col;
uint64_t ss_res = 0;
v4i32 mul0, mul1;
v2i64 res0 = { 0 };
if (4 == size) {
uint64_t src0, src1, src2, src3;
v8i16 diff0 = { 0 };
v8i16 diff1 = { 0 };
LD4(src, src_stride, src0, src1, src2, src3);
INSERT_D2_SH(src0, src1, diff0);
INSERT_D2_SH(src2, src3, diff1);
DOTP_SH2_SW(diff0, diff1, diff0, diff1, mul0, mul1);
mul0 += mul1;
res0 = __msa_hadd_s_d(mul0, mul0);
res0 += __msa_splati_d(res0, 1);
ss_res = (uint64_t)__msa_copy_s_d(res0, 0);
} else if (8 == size) {
v8i16 src0, src1, src2, src3, src4, src5, src6, src7;
LD_SH8(src, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
DOTP_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
mul0 += mul1;
res0 = __msa_hadd_s_d(mul0, mul0);
res0 += __msa_splati_d(res0, 1);
ss_res = (uint64_t)__msa_copy_s_d(res0, 0);
} else if (16 == size) {
v8i16 src0, src1, src2, src3, src4, src5, src6, src7;
LD_SH8(src, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
DOTP_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src + 8, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
src += 8 * src_stride;
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src + 8, src_stride, src0, src1, src2, src3, src4, src5, src6, src7);
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
mul0 += mul1;
res0 += __msa_hadd_s_d(mul0, mul0);
res0 += __msa_splati_d(res0, 1);
ss_res = (uint64_t)__msa_copy_s_d(res0, 0);
} else if (0 == (size % 16)) {
v8i16 src0, src1, src2, src3, src4, src5, src6, src7;
for (row = 0; row < (size >> 4); row++) {
for (col = 0; col < size; col += 16) {
const int16_t *src_ptr = src + col;
LD_SH8(src_ptr, src_stride, src0, src1, src2, src3, src4, src5, src6,
src7);
DOTP_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src_ptr + 8, src_stride, src0, src1, src2, src3, src4, src5,
src6, src7);
src_ptr += 8 * src_stride;
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src_ptr, src_stride, src0, src1, src2, src3, src4, src5, src6,
src7);
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
LD_SH8(src_ptr + 8, src_stride, src0, src1, src2, src3, src4, src5,
src6, src7);
DPADD_SH2_SW(src0, src1, src0, src1, mul0, mul1);
DPADD_SH2_SW(src2, src3, src2, src3, mul0, mul1);
DPADD_SH2_SW(src4, src5, src4, src5, mul0, mul1);
DPADD_SH2_SW(src6, src7, src6, src7, mul0, mul1);
mul0 += mul1;
res0 += __msa_hadd_s_d(mul0, mul0);
}
src += 16 * src_stride;
}
res0 += __msa_splati_d(res0, 1);
ss_res = (uint64_t)__msa_copy_s_d(res0, 0);
} else {
int16_t val;
for (row = 0; row < size; row++) {
for (col = 0; col < size; col++) {
val = src[col];
ss_res += val * val;
}
src += src_stride;
}
}
return ss_res;
}