libvpx: Pull from upstream

source/libvpx/vp8/encoder/x86/denoising_sse2.c

Index: source/libvpx/vp8/encoder/x86/denoising_sse2.c
===================================================================
--- source/libvpx/vp8/encoder/x86/denoising_sse2.c	(revision 271138)
+++ source/libvpx/vp8/encoder/x86/denoising_sse2.c	(working copy)
@@ -26,19 +26,24 @@
                              int mc_avg_y_stride,
                              unsigned char *running_avg_y, int avg_y_stride,
                              unsigned char *sig, int sig_stride,
-                             unsigned int motion_magnitude)
+                             unsigned int motion_magnitude,
+                             int increase_denoising)
 {
     unsigned char *running_avg_y_start = running_avg_y;
     unsigned char *sig_start = sig;
+    int sum_diff_thresh;
     int r;
+    int shift_inc  = (increase_denoising &&
+        motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 1 : 0;
     __m128i acc_diff = _mm_setzero_si128();
     const __m128i k_0 = _mm_setzero_si128();
-    const __m128i k_4 = _mm_set1_epi8(4);
+    const __m128i k_4 = _mm_set1_epi8(4 + shift_inc);
     const __m128i k_8 = _mm_set1_epi8(8);
     const __m128i k_16 = _mm_set1_epi8(16);
     /* Modify each level's adjustment according to motion_magnitude. */
     const __m128i l3 = _mm_set1_epi8(
-                      (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ? 7 : 6);
+                       (motion_magnitude <= MOTION_MAGNITUDE_THRESHOLD) ?
+                        7 + shift_inc : 6);
     /* Difference between level 3 and level 2 is 2. */
     const __m128i l32 = _mm_set1_epi8(2);
     /* Difference between level 2 and level 1 is 1. */
@@ -105,7 +110,9 @@
                  + s.e[6] + s.e[7] + s.e[8] + s.e[9] + s.e[10] + s.e[11]
                  + s.e[12] + s.e[13] + s.e[14] + s.e[15];
 
-        if (abs(sum_diff) > SUM_DIFF_THRESHOLD)
+        sum_diff_thresh = SUM_DIFF_THRESHOLD;
+        if (increase_denoising) sum_diff_thresh = SUM_DIFF_THRESHOLD_HIGH;
+        if (abs(sum_diff) > sum_diff_thresh)
         {
             return COPY_BLOCK;
         }