1 files changed, 89 insertions, 0 deletions
diff --git a/third_party/aom/av1/common/x86/cfl_sse2.c b/third_party/aom/av1/common/x86/cfl_sse2.c
new file mode 100644
index 000000000..4783fe098
--- /dev/null
+++ b/third_party/aom/av1/common/x86/cfl_sse2.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 2017, Alliance for Open Media. All rights reserved
+ *
+ * This source code is subject to the terms of the BSD 2 Clause License and
+ * the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
+ * was not distributed with this source code in the LICENSE file, you can
+ * obtain it at www.aomedia.org/license/software. If the Alliance for Open
+ * Media Patent License 1.0 was not distributed with this source code in the
+ * PATENTS file, you can obtain it at www.aomedia.org/license/patent.
+ */
+
+#include <emmintrin.h>
+
+#include "av1/common/cfl.h"
+#include "config/av1_rtcd.h"
+
+static INLINE __m128i fill_sum_epi32(__m128i l0) {
+  l0 = _mm_add_epi32(l0, _mm_shuffle_epi32(l0, _MM_SHUFFLE(1, 0, 3, 2)));
+  return _mm_add_epi32(l0, _mm_shuffle_epi32(l0, _MM_SHUFFLE(2, 3, 0, 1)));
+}
+
+static INLINE void subtract_average_sse2(const uint16_t *src_ptr,
+                                         int16_t *dst_ptr, int width,
+                                         int height, int round_offset,
+                                         int num_pel_log2) {
+  const __m128i zeros = _mm_setzero_si128();
+  const __m128i round_offset_epi32 = _mm_set1_epi32(round_offset);
+  const __m128i *src = (__m128i *)src_ptr;
+  const __m128i *const end = src + height * CFL_BUF_LINE_I128;
+  const int step = CFL_BUF_LINE_I128 * (1 + (width == 8) + 3 * (width == 4));
+
+  __m128i sum = zeros;
+  do {
+    __m128i l0;
+    if (width == 4) {
+      l0 = _mm_add_epi16(_mm_loadl_epi64(src),
+                         _mm_loadl_epi64(src + CFL_BUF_LINE_I128));
+      __m128i l1 = _mm_add_epi16(_mm_loadl_epi64(src + 2 * CFL_BUF_LINE_I128),
+                                 _mm_loadl_epi64(src + 3 * CFL_BUF_LINE_I128));
+      sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
+                                             _mm_unpacklo_epi16(l1, zeros)));
+    } else {
+      if (width == 8) {
+        l0 = _mm_add_epi16(_mm_loadu_si128(src),
+                           _mm_loadu_si128(src + CFL_BUF_LINE_I128));
+      } else {
+        l0 = _mm_add_epi16(_mm_loadu_si128(src), _mm_loadu_si128(src + 1));
+      }
+      sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
+                                             _mm_unpackhi_epi16(l0, zeros)));
+      if (width == 32) {
+        l0 = _mm_add_epi16(_mm_loadu_si128(src + 2), _mm_loadu_si128(src + 3));
+        sum = _mm_add_epi32(sum, _mm_add_epi32(_mm_unpacklo_epi16(l0, zeros),
+                                               _mm_unpackhi_epi16(l0, zeros)));
+      }
+    }
+    src += step;
+  } while (src < end);
+
+  sum = fill_sum_epi32(sum);
+
+  __m128i avg_epi16 =
+      _mm_srli_epi32(_mm_add_epi32(sum, round_offset_epi32), num_pel_log2);
+  avg_epi16 = _mm_packs_epi32(avg_epi16, avg_epi16);
+
+  src = (__m128i *)src_ptr;
+  __m128i *dst = (__m128i *)dst_ptr;
+  do {
+    if (width == 4) {
+      _mm_storel_epi64(dst, _mm_sub_epi16(_mm_loadl_epi64(src), avg_epi16));
+    } else {
+      _mm_storeu_si128(dst, _mm_sub_epi16(_mm_loadu_si128(src), avg_epi16));
+      if (width > 8) {
+        _mm_storeu_si128(dst + 1,
+                         _mm_sub_epi16(_mm_loadu_si128(src + 1), avg_epi16));
+        if (width == 32) {
+          _mm_storeu_si128(dst + 2,
+                           _mm_sub_epi16(_mm_loadu_si128(src + 2), avg_epi16));
+          _mm_storeu_si128(dst + 3,
+                           _mm_sub_epi16(_mm_loadu_si128(src + 3), avg_epi16));
+        }
+      }
+    }
+    src += CFL_BUF_LINE_I128;
+    dst += CFL_BUF_LINE_I128;
+  } while (src < end);
+}
+
+CFL_SUB_AVG_FN(sse2)