core(stat): move implementations into .hpp file w/o changes

modules/core/src/stat.cpp

@@ -4269,156 +4269,6 @@ static const uchar popCountTable4[] =
     1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2
 };
 
-#if CV_AVX2
-static inline int _mm256_extract_epi32_(__m256i reg, const int i)
-{
-    CV_DECL_ALIGNED(32) int reg_data[8];
-    CV_DbgAssert(0 <= i && i < 8);
-    _mm256_store_si256((__m256i*)reg_data, reg);
-    return reg_data[i];
-}
-#endif
-
-int normHamming(const uchar* a, int n)
-{
-    int i = 0;
-    int result = 0;
-#if CV_AVX2
-    if(USE_AVX2)
-    {
-        __m256i _r0 = _mm256_setzero_si256();
-        __m256i _0 = _mm256_setzero_si256();
-        __m256i _popcnt_table = _mm256_setr_epi8(0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
-                                                 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4);
-        __m256i _popcnt_mask = _mm256_set1_epi8(0x0F);
-
-        for(; i <= n - 32; i+= 32)
-        {
-            __m256i _a0 = _mm256_loadu_si256((const __m256i*)(a + i));
-
-            __m256i _popc0 = _mm256_shuffle_epi8(_popcnt_table, _mm256_and_si256(_a0, _popcnt_mask));
-            __m256i _popc1 = _mm256_shuffle_epi8(_popcnt_table,
-                             _mm256_and_si256(_mm256_srli_epi16(_a0, 4), _popcnt_mask));
-
-            _r0 = _mm256_add_epi32(_r0, _mm256_sad_epu8(_0, _mm256_add_epi8(_popc0, _popc1)));
-        }
-        _r0 = _mm256_add_epi32(_r0, _mm256_shuffle_epi32(_r0, 2));
-        result = _mm256_extract_epi32_(_mm256_add_epi32(_r0, _mm256_permute2x128_si256(_r0, _r0, 1)), 0);
-    }
-#endif // CV_AVX2
-
-#if CV_POPCNT
-    if(checkHardwareSupport(CV_CPU_POPCNT))
-    {
-#  if defined CV_POPCNT_U64
-        for(; i <= n - 8; i += 8)
-        {
-            result += (int)CV_POPCNT_U64(*(uint64*)(a + i));
-        }
-#  endif
-        for(; i <= n - 4; i += 4)
-        {
-            result += CV_POPCNT_U32(*(uint*)(a + i));
-        }
-    }
-#endif // CV_POPCNT
-
-#if CV_SIMD128
-    if(hasSIMD128())
-    {
-        v_uint32x4 t = v_setzero_u32();
-        for(; i <= n - v_uint8x16::nlanes; i += v_uint8x16::nlanes)
-        {
-            t += v_popcount(v_load(a + i));
-        }
-        result += v_reduce_sum(t);
-    }
-#endif // CV_SIMD128
-#if CV_ENABLE_UNROLLED
-    for(; i <= n - 4; i += 4)
-    {
-        result += popCountTable[a[i]] + popCountTable[a[i+1]] +
-        popCountTable[a[i+2]] + popCountTable[a[i+3]];
-    }
-#endif
-    for(; i < n; i++)
-    {
-        result += popCountTable[a[i]];
-    }
-    return result;
-}
-
-int normHamming(const uchar* a, const uchar* b, int n)
-{
-    int i = 0;
-    int result = 0;
-#if CV_AVX2
-    if(USE_AVX2)
-    {
-        __m256i _r0 = _mm256_setzero_si256();
-        __m256i _0 = _mm256_setzero_si256();
-        __m256i _popcnt_table = _mm256_setr_epi8(0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
-                                                 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4);
-        __m256i _popcnt_mask = _mm256_set1_epi8(0x0F);
-
-        for(; i <= n - 32; i+= 32)
-        {
-            __m256i _a0 = _mm256_loadu_si256((const __m256i*)(a + i));
-            __m256i _b0 = _mm256_loadu_si256((const __m256i*)(b + i));
-
-            __m256i _xor = _mm256_xor_si256(_a0, _b0);
-
-            __m256i _popc0 = _mm256_shuffle_epi8(_popcnt_table, _mm256_and_si256(_xor, _popcnt_mask));
-            __m256i _popc1 = _mm256_shuffle_epi8(_popcnt_table,
-                             _mm256_and_si256(_mm256_srli_epi16(_xor, 4), _popcnt_mask));
-
-            _r0 = _mm256_add_epi32(_r0, _mm256_sad_epu8(_0, _mm256_add_epi8(_popc0, _popc1)));
-        }
-        _r0 = _mm256_add_epi32(_r0, _mm256_shuffle_epi32(_r0, 2));
-        result = _mm256_extract_epi32_(_mm256_add_epi32(_r0, _mm256_permute2x128_si256(_r0, _r0, 1)), 0);
-    }
-#endif // CV_AVX2
-
-#if CV_POPCNT
-    if(checkHardwareSupport(CV_CPU_POPCNT))
-    {
-#  if defined CV_POPCNT_U64
-        for(; i <= n - 8; i += 8)
-        {
-            result += (int)CV_POPCNT_U64(*(uint64*)(a + i) ^ *(uint64*)(b + i));
-        }
-#  endif
-        for(; i <= n - 4; i += 4)
-        {
-            result += CV_POPCNT_U32(*(uint*)(a + i) ^ *(uint*)(b + i));
-        }
-    }
-#endif // CV_POPCNT
-
-#if CV_SIMD128
-    if(hasSIMD128())
-    {
-        v_uint32x4 t = v_setzero_u32();
-        for(; i <= n - v_uint8x16::nlanes; i += v_uint8x16::nlanes)
-        {
-            t += v_popcount(v_load(a + i) ^ v_load(b + i));
-        }
-        result += v_reduce_sum(t);
-    }
-#endif // CV_SIMD128
-#if CV_ENABLE_UNROLLED
-    for(; i <= n - 4; i += 4)
-    {
-        result += popCountTable[a[i] ^ b[i]] + popCountTable[a[i+1] ^ b[i+1]] +
-                popCountTable[a[i+2] ^ b[i+2]] + popCountTable[a[i+3] ^ b[i+3]];
-    }
-#endif
-    for(; i < n; i++)
-    {
-        result += popCountTable[a[i] ^ b[i]];
-    }
-    return result;
-}
 
 int normHamming(const uchar* a, int n, int cellSize)
 {

modules/core/src/stat.simd.hpp

+// This file is part of OpenCV project.
+// It is subject to the license terms in the LICENSE file found in the top-level directory
+// of this distribution and at http://opencv.org/license.html.
+
+#include "opencv2/core/hal/intrin.hpp"
+
+namespace cv { namespace hal {
+CV_CPU_OPTIMIZATION_NAMESPACE_BEGIN
+
+// forward declarations
+int normHamming(const uchar* a, int n);
+int normHamming(const uchar* a, const uchar* b, int n);
+
+#ifndef CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY
+
+#if CV_AVX2
+static inline int _mm256_extract_epi32_(__m256i reg, const int i)
+{
+    CV_DECL_ALIGNED(32) int reg_data[8];
+    CV_DbgAssert(0 <= i && i < 8);
+    _mm256_store_si256((__m256i*)reg_data, reg);
+    return reg_data[i];
+}
+#endif
+
+int normHamming(const uchar* a, int n)
+{
+    int i = 0;
+    int result = 0;
+#if CV_AVX2
+    if(USE_AVX2)
+    {
+        __m256i _r0 = _mm256_setzero_si256();
+        __m256i _0 = _mm256_setzero_si256();
+        __m256i _popcnt_table = _mm256_setr_epi8(0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
+                                                 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4);
+        __m256i _popcnt_mask = _mm256_set1_epi8(0x0F);
+
+        for(; i <= n - 32; i+= 32)
+        {
+            __m256i _a0 = _mm256_loadu_si256((const __m256i*)(a + i));
+
+            __m256i _popc0 = _mm256_shuffle_epi8(_popcnt_table, _mm256_and_si256(_a0, _popcnt_mask));
+            __m256i _popc1 = _mm256_shuffle_epi8(_popcnt_table,
+                             _mm256_and_si256(_mm256_srli_epi16(_a0, 4), _popcnt_mask));
+
+            _r0 = _mm256_add_epi32(_r0, _mm256_sad_epu8(_0, _mm256_add_epi8(_popc0, _popc1)));
+        }
+        _r0 = _mm256_add_epi32(_r0, _mm256_shuffle_epi32(_r0, 2));
+        result = _mm256_extract_epi32_(_mm256_add_epi32(_r0, _mm256_permute2x128_si256(_r0, _r0, 1)), 0);
+    }
+#endif // CV_AVX2
+
+#if CV_POPCNT
+    if(checkHardwareSupport(CV_CPU_POPCNT))
+    {
+#  if defined CV_POPCNT_U64
+        for(; i <= n - 8; i += 8)
+        {
+            result += (int)CV_POPCNT_U64(*(uint64*)(a + i));
+        }
+#  endif
+        for(; i <= n - 4; i += 4)
+        {
+            result += CV_POPCNT_U32(*(uint*)(a + i));
+        }
+    }
+#endif // CV_POPCNT
+
+#if CV_SIMD128
+    if(hasSIMD128())
+    {
+        v_uint32x4 t = v_setzero_u32();
+        for(; i <= n - v_uint8x16::nlanes; i += v_uint8x16::nlanes)
+        {
+            t += v_popcount(v_load(a + i));
+        }
+        result += v_reduce_sum(t);
+    }
+#endif // CV_SIMD128
+#if CV_ENABLE_UNROLLED
+    for(; i <= n - 4; i += 4)
+    {
+        result += popCountTable[a[i]] + popCountTable[a[i+1]] +
+        popCountTable[a[i+2]] + popCountTable[a[i+3]];
+    }
+#endif
+    for(; i < n; i++)
+    {
+        result += popCountTable[a[i]];
+    }
+    return result;
+}
+
+int normHamming(const uchar* a, const uchar* b, int n)
+{
+    int i = 0;
+    int result = 0;
+#if CV_AVX2
+    if(USE_AVX2)
+    {
+        __m256i _r0 = _mm256_setzero_si256();
+        __m256i _0 = _mm256_setzero_si256();
+        __m256i _popcnt_table = _mm256_setr_epi8(0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
+                                                 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4);
+        __m256i _popcnt_mask = _mm256_set1_epi8(0x0F);
+
+        for(; i <= n - 32; i+= 32)
+        {
+            __m256i _a0 = _mm256_loadu_si256((const __m256i*)(a + i));
+            __m256i _b0 = _mm256_loadu_si256((const __m256i*)(b + i));
+
+            __m256i _xor = _mm256_xor_si256(_a0, _b0);
+
+            __m256i _popc0 = _mm256_shuffle_epi8(_popcnt_table, _mm256_and_si256(_xor, _popcnt_mask));
+            __m256i _popc1 = _mm256_shuffle_epi8(_popcnt_table,
+                             _mm256_and_si256(_mm256_srli_epi16(_xor, 4), _popcnt_mask));
+
+            _r0 = _mm256_add_epi32(_r0, _mm256_sad_epu8(_0, _mm256_add_epi8(_popc0, _popc1)));
+        }
+        _r0 = _mm256_add_epi32(_r0, _mm256_shuffle_epi32(_r0, 2));
+        result = _mm256_extract_epi32_(_mm256_add_epi32(_r0, _mm256_permute2x128_si256(_r0, _r0, 1)), 0);
+    }
+#endif // CV_AVX2
+
+#if CV_POPCNT
+    if(checkHardwareSupport(CV_CPU_POPCNT))
+    {
+#  if defined CV_POPCNT_U64
+        for(; i <= n - 8; i += 8)
+        {
+            result += (int)CV_POPCNT_U64(*(uint64*)(a + i) ^ *(uint64*)(b + i));
+        }
+#  endif
+        for(; i <= n - 4; i += 4)
+        {
+            result += CV_POPCNT_U32(*(uint*)(a + i) ^ *(uint*)(b + i));
+        }
+    }
+#endif // CV_POPCNT
+
+#if CV_SIMD128
+    if(hasSIMD128())
+    {
+        v_uint32x4 t = v_setzero_u32();
+        for(; i <= n - v_uint8x16::nlanes; i += v_uint8x16::nlanes)
+        {
+            t += v_popcount(v_load(a + i) ^ v_load(b + i));
+        }
+        result += v_reduce_sum(t);
+    }
+#endif // CV_SIMD128
+#if CV_ENABLE_UNROLLED
+    for(; i <= n - 4; i += 4)
+    {
+        result += popCountTable[a[i] ^ b[i]] + popCountTable[a[i+1] ^ b[i+1]] +
+                popCountTable[a[i+2] ^ b[i+2]] + popCountTable[a[i+3] ^ b[i+3]];
+    }
+#endif
+    for(; i < n; i++)
+    {
+        result += popCountTable[a[i] ^ b[i]];
+    }
+    return result;
+}
+
+#endif // CV_CPU_OPTIMIZATION_DECLARATIONS_ONLY
+
+CV_CPU_OPTIMIZATION_NAMESPACE_END
+}} //cv::hal