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/*
* 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 __cplusplus
namespace 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)
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