From 678702573531f19ae36847a6a07257aaae623fbe Mon Sep 17 00:00:00 2001
From: Sadaf Ebrahimi <sadafebrahimi@google.com>
Date: Fri, 25 Aug 2023 16:27:50 +0000
Subject: Move libyuv/files/ directly under libyuv

Test: TreeHugger
Merged-In: I773d1ae01539cc5d200768b526f10b2922567f72
Change-Id: I4ba1f1e781d7fd3ad96639dfdc08f654e45ae3d3
---
 source/compare_msa.cc | 97 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 97 insertions(+)
 create mode 100644 source/compare_msa.cc

(limited to 'source/compare_msa.cc')

diff --git a/source/compare_msa.cc b/source/compare_msa.cc
new file mode 100644
index 00000000..0b807d37
--- /dev/null
+++ b/source/compare_msa.cc
@@ -0,0 +1,97 @@
+/*
+ *  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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