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authortrav90 <travawine@palemoon.org>2018-10-15 21:45:30 -0500
committertrav90 <travawine@palemoon.org>2018-10-15 21:45:30 -0500
commit68569dee1416593955c1570d638b3d9250b33012 (patch)
treed960f017cd7eba3f125b7e8a813789ee2e076310 /third_party/aom/aom_dsp/sum_squares.c
parent07c17b6b98ed32fcecff15c083ab0fd878de3cf0 (diff)
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Import aom library
This is the reference implementation for the Alliance for Open Media's av1 video code. The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.
Diffstat (limited to 'third_party/aom/aom_dsp/sum_squares.c')
-rw-r--r--third_party/aom/aom_dsp/sum_squares.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/third_party/aom/aom_dsp/sum_squares.c b/third_party/aom/aom_dsp/sum_squares.c
new file mode 100644
index 000000000..b9155fdc0
--- /dev/null
+++ b/third_party/aom/aom_dsp/sum_squares.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2016, 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 <assert.h>
+
+#include "./aom_dsp_rtcd.h"
+
+uint64_t aom_sum_squares_2d_i16_c(const int16_t *src, int src_stride, int width,
+ int height) {
+ int r, c;
+ uint64_t ss = 0;
+
+ for (r = 0; r < height; r++) {
+ for (c = 0; c < width; c++) {
+ const int16_t v = src[c];
+ ss += v * v;
+ }
+ src += src_stride;
+ }
+
+ return ss;
+}
+
+uint64_t aom_sum_squares_i16_c(const int16_t *src, uint32_t n) {
+ uint64_t ss = 0;
+ do {
+ const int16_t v = *src++;
+ ss += v * v;
+ } while (--n);
+
+ return ss;
+}