libvpx: Pull from upstream

source/libvpx/vp9/encoder/x86/vp9_variance_avx2.c

 /*
  *  Copyright (c) 2012 The WebM 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 "./vpx_config.h"
@@ skipping 24 matching lines @@
 void vp9_get32x32var_avx2
 (
   const unsigned char *src_ptr,
   int source_stride,
   const unsigned char *ref_ptr,
   int recon_stride,
   unsigned int *SSE,
   int *Sum
 );
 
+unsigned int vp9_sub_pixel_variance32xh_avx2
+(
+  const uint8_t *src,
+  int src_stride,
+  int x_offset,
+  int y_offset,
+  const uint8_t *dst,
+  int dst_stride,
+  int height,
+  unsigned int *sse
+);
+
+unsigned int vp9_sub_pixel_avg_variance32xh_avx2
+(
+  const uint8_t *src,
+  int src_stride,
+  int x_offset,
+  int y_offset,
+  const uint8_t *dst,
+  int dst_stride,
+  const uint8_t *sec,
+  int sec_stride,
+  int height,
+  unsigned int *sseptr
+);
+
 static void variance_avx2(const unsigned char *src_ptr, int  source_stride,
                         const unsigned char *ref_ptr, int  recon_stride,
                         int  w, int  h, unsigned int *sse, int *sum,
                         get_var_avx2 var_fn, int block_size) {
   unsigned int sse0;
   int sum0;
   int i, j;
 
   *sse = 0;
   *sum = 0;
@@ skipping 93 matching lines @@
   unsigned int var;
   int avg;
 
   // processing 32 elements vertically in parallel
   variance_avx2(src_ptr, source_stride, ref_ptr, recon_stride, 64, 32,
                 &var, &avg, vp9_get32x32var_avx2, 32);
 
   *sse = var;
   return (var - (((int64_t)avg * avg) >> 11));
 }
+
+unsigned int vp9_sub_pixel_variance64x64_avx2(const uint8_t *src,
+                                              int src_stride,
+                                              int x_offset,
+                                              int y_offset,
+                                              const uint8_t *dst,
+                                              int dst_stride,
+                                              unsigned int *sse_ptr) {
+  // processing 32 elements in parallel
+  unsigned int sse;
+  int se = vp9_sub_pixel_variance32xh_avx2(src, src_stride, x_offset,
+                                           y_offset, dst, dst_stride,
+                                           64, &sse);
+  // processing the next 32 elements in parallel
+  unsigned int sse2;
+  int se2 = vp9_sub_pixel_variance32xh_avx2(src + 32, src_stride,
+                                            x_offset, y_offset,
+                                            dst + 32, dst_stride,
+                                            64, &sse2);
+  se += se2;
+  sse += sse2;
+  *sse_ptr = sse;
+  return sse - (((int64_t)se * se) >> 12);
+}
+
+unsigned int vp9_sub_pixel_variance32x32_avx2(const uint8_t *src,
+                                              int src_stride,
+                                              int x_offset,
+                                              int y_offset,
+                                              const uint8_t *dst,
+                                              int dst_stride,
+                                              unsigned int *sse_ptr) {
+  // processing 32 element in parallel
+  unsigned int sse;
+  int se = vp9_sub_pixel_variance32xh_avx2(src, src_stride, x_offset,
+                                           y_offset, dst, dst_stride,
+                                           32, &sse);
+  *sse_ptr = sse;
+  return sse - (((int64_t)se * se) >> 10);
+}
+
+unsigned int vp9_sub_pixel_avg_variance64x64_avx2(const uint8_t *src,
+                                                  int src_stride,
+                                                  int x_offset,
+                                                  int y_offset,
+                                                  const uint8_t *dst,
+                                                  int dst_stride,
+                                                  unsigned int *sseptr,
+                                                  const uint8_t *sec) {
+  // processing 32 elements in parallel
+  unsigned int sse;
+
+  int se = vp9_sub_pixel_avg_variance32xh_avx2(src, src_stride, x_offset,
+                                               y_offset, dst, dst_stride,
+                                               sec, 64, 64, &sse);
+  unsigned int sse2;
+  // processing the next 32 elements in parallel
+  int se2 = vp9_sub_pixel_avg_variance32xh_avx2(src + 32, src_stride, x_offset,
+                                                y_offset, dst + 32, dst_stride,
+                                                sec + 32, 64, 64, &sse2);
+  se += se2;
+  sse += sse2;
+  *sseptr = sse;
+
+  return sse - (((int64_t)se * se) >> 12);
+}
+
+unsigned int vp9_sub_pixel_avg_variance32x32_avx2(const uint8_t *src,
+                                                  int src_stride,
+                                                  int x_offset,
+                                                  int y_offset,
+                                                  const uint8_t *dst,
+                                                  int dst_stride,
+                                                  unsigned int *sseptr,
+                                                  const uint8_t *sec) {
+  // processing 32 element in parallel
+  unsigned int sse;
+  int se = vp9_sub_pixel_avg_variance32xh_avx2(src, src_stride, x_offset,
+                                                 y_offset, dst, dst_stride,
+                                                 sec, 32, 32, &sse);
+  *sseptr = sse;
+  return sse - (((int64_t)se * se) >> 10);
+}
+
+