/* *  Copyright 2017 The LibYuv 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 "libyuv/basic_types.h" #include "libyuv/compare_row.h"#include "libyuv/row.h" // This module is for GCC MSA#if !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)#include "libyuv/macros_msa.h" #ifdef __cplusplusnamespace libyuv {extern "C" {#endif uint32_t HammingDistance_MSA(const uint8_t* src_a,                             const uint8_t* src_b,                             int count) {  uint32_t diff = 0u;  int i;  v16u8 src0, src1, src2, src3;  v2i64 vec0 = {0}, vec1 = {0};   for (i = 0; i < count; i += 32) {    src0 = (v16u8)__msa_ld_b((v16i8*)src_a, 0);    src1 = (v16u8)__msa_ld_b((v16i8*)src_a, 16);    src2 = (v16u8)__msa_ld_b((v16i8*)src_b, 0);    src3 = (v16u8)__msa_ld_b((v16i8*)src_b, 16);    src0 ^= src2;    src1 ^= src3;    vec0 += __msa_pcnt_d((v2i64)src0);    vec1 += __msa_pcnt_d((v2i64)src1);    src_a += 32;    src_b += 32;  }   vec0 += vec1;  diff = (uint32_t)__msa_copy_u_w((v4i32)vec0, 0);  diff += (uint32_t)__msa_copy_u_w((v4i32)vec0, 2);  return diff;} uint32_t SumSquareError_MSA(const uint8_t* src_a,                            const uint8_t* src_b,                            int count) {  uint32_t sse = 0u;  int i;  v16u8 src0, src1, src2, src3;  v8i16 vec0, vec1, vec2, vec3;  v4i32 reg0 = {0}, reg1 = {0}, reg2 = {0}, reg3 = {0};  v2i64 tmp0;   for (i = 0; i < count; i += 32) {    src0 = (v16u8)__msa_ld_b((v16i8*)src_a, 0);    src1 = (v16u8)__msa_ld_b((v16i8*)src_a, 16);    src2 = (v16u8)__msa_ld_b((v16i8*)src_b, 0);    src3 = (v16u8)__msa_ld_b((v16i8*)src_b, 16);    vec0 = (v8i16)__msa_ilvr_b((v16i8)src2, (v16i8)src0);    vec1 = (v8i16)__msa_ilvl_b((v16i8)src2, (v16i8)src0);    vec2 = (v8i16)__msa_ilvr_b((v16i8)src3, (v16i8)src1);    vec3 = (v8i16)__msa_ilvl_b((v16i8)src3, (v16i8)src1);    vec0 = __msa_hsub_u_h((v16u8)vec0, (v16u8)vec0);    vec1 = __msa_hsub_u_h((v16u8)vec1, (v16u8)vec1);    vec2 = __msa_hsub_u_h((v16u8)vec2, (v16u8)vec2);    vec3 = __msa_hsub_u_h((v16u8)vec3, (v16u8)vec3);    reg0 = __msa_dpadd_s_w(reg0, vec0, vec0);    reg1 = __msa_dpadd_s_w(reg1, vec1, vec1);    reg2 = __msa_dpadd_s_w(reg2, vec2, vec2);    reg3 = __msa_dpadd_s_w(reg3, vec3, vec3);    src_a += 32;    src_b += 32;  }   reg0 += reg1;  reg2 += reg3;  reg0 += reg2;  tmp0 = __msa_hadd_s_d(reg0, reg0);  sse = (uint32_t)__msa_copy_u_w((v4i32)tmp0, 0);  sse += (uint32_t)__msa_copy_u_w((v4i32)tmp0, 2);  return sse;} #ifdef __cplusplus}  // extern "C"}  // namespace libyuv#endif #endif  // !defined(LIBYUV_DISABLE_MSA) && defined(__mips_msa)