diff -r 000000000000 -r 6474c204b198 media/libvpx/vp9/encoder/x86/vp9_variance_mmx.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/libvpx/vp9/encoder/x86/vp9_variance_mmx.c	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,154 @@
+/*
+ *  Copyright (c) 2010 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"
+#include "vp9/encoder/vp9_variance.h"
+#include "vp9/common/vp9_pragmas.h"
+#include "vpx_ports/mem.h"
+
+extern unsigned int vp9_get_mb_ss_mmx(const int16_t *src_ptr);
+extern unsigned int vp9_get8x8var_mmx
+(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *SSE,
+  int *Sum
+);
+extern unsigned int vp9_get4x4var_mmx
+(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *SSE,
+  int *Sum
+);
+
+unsigned int vp9_variance4x4_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int var;
+  int avg;
+
+  vp9_get4x4var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg);
+  *sse = var;
+  return (var - (((unsigned int)avg * avg) >> 4));
+}
+
+unsigned int vp9_variance8x8_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int var;
+  int avg;
+
+  vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &var, &avg);
+  *sse = var;
+
+  return (var - (((unsigned int)avg * avg) >> 6));
+}
+
+unsigned int vp9_mse16x16_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int sse0, sse1, sse2, sse3, var;
+  int sum0, sum1, sum2, sum3;
+
+
+  vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
+                    &sum0);
+  vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
+                    &sse1, &sum1);
+  vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
+                    ref_ptr + 8 * recon_stride, recon_stride, &sse2, &sum2);
+  vp9_get8x8var_mmx(src_ptr + 8 * source_stride + 8, source_stride,
+                    ref_ptr + 8 * recon_stride + 8, recon_stride, &sse3, &sum3);
+
+  var = sse0 + sse1 + sse2 + sse3;
+  *sse = var;
+  return var;
+}
+
+
+unsigned int vp9_variance16x16_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int sse0, sse1, sse2, sse3, var;
+  int sum0, sum1, sum2, sum3, avg;
+
+  vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
+                    &sum0);
+  vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
+                    &sse1, &sum1);
+  vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
+                    ref_ptr + 8 * recon_stride, recon_stride, &sse2, &sum2);
+  vp9_get8x8var_mmx(src_ptr + 8 * source_stride + 8, source_stride,
+                    ref_ptr + 8 * recon_stride + 8, recon_stride, &sse3, &sum3);
+
+  var = sse0 + sse1 + sse2 + sse3;
+  avg = sum0 + sum1 + sum2 + sum3;
+  *sse = var;
+  return (var - (((unsigned int)avg * avg) >> 8));
+}
+
+unsigned int vp9_variance16x8_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int sse0, sse1, var;
+  int sum0, sum1, avg;
+
+  vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
+                    &sum0);
+  vp9_get8x8var_mmx(src_ptr + 8, source_stride, ref_ptr + 8, recon_stride,
+                    &sse1, &sum1);
+
+  var = sse0 + sse1;
+  avg = sum0 + sum1;
+  *sse = var;
+  return (var - (((unsigned int)avg * avg) >> 7));
+}
+
+
+unsigned int vp9_variance8x16_mmx(
+  const unsigned char *src_ptr,
+  int  source_stride,
+  const unsigned char *ref_ptr,
+  int  recon_stride,
+  unsigned int *sse) {
+  unsigned int sse0, sse1, var;
+  int sum0, sum1, avg;
+
+  vp9_get8x8var_mmx(src_ptr, source_stride, ref_ptr, recon_stride, &sse0,
+                    &sum0);
+  vp9_get8x8var_mmx(src_ptr + 8 * source_stride, source_stride,
+                    ref_ptr + 8 * recon_stride, recon_stride, &sse1, &sum1);
+
+  var = sse0 + sse1;
+  avg = sum0 + sum1;
+  *sse = var;
+
+  return (var - (((unsigned int)avg * avg) >> 7));
+}