1 files changed, 26 insertions, 0 deletions
diff --git a/media/libvpx/libvpx/vpx_dsp/sum_squares.c b/media/libvpx/libvpx/vpx_dsp/sum_squares.c
new file mode 100644
index 0000000000..b80cd588e4
--- /dev/null
+++ b/media/libvpx/libvpx/vpx_dsp/sum_squares.c
@@ -0,0 +1,26 @@
+/*
+ *  Copyright (c) 2016 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_dsp_rtcd.h"
+
+uint64_t vpx_sum_squares_2d_i16_c(const int16_t *src, int stride, int size) {
+  int r, c;
+  uint64_t ss = 0;
+
+  for (r = 0; r < size; r++) {
+    for (c = 0; c < size; c++) {
+      const int16_t v = src[c];
+      ss += v * v;
+    }
+    src += stride;
+  }
+
+  return ss;
+}