Import aom library

This is the reference implementation for the Alliance for Open Media's av1 video code.

The commit used was 4d668d7feb1f8abd809d1bca0418570a7f142a36.

1 files changed, 41 insertions, 0 deletions

diff --git a/third_party/aom/test/divu_small_test.cc b/third_party/aom/test/divu_small_test.cc
new file mode 100644
index 000000000..064f8ee45
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+++ b/third_party/aom/test/divu_small_test.cc
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+/*
+ * 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 <stdlib.h>
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "test/acm_random.h"
+#include "av1/common/odintrin.h"
+
+using libaom_test::ACMRandom;
+
+TEST(Daala, TestDIVUuptoMAX) {
+  for (int d = 1; d <= OD_DIVU_DMAX; d++) {
+    for (uint32_t x = 1; x <= 1000000; x++) {
+      GTEST_ASSERT_EQ(x / d, OD_DIVU_SMALL(x, d))
+          << "x=" << x << " d=" << d << " x/d=" << (x / d)
+          << " != " << OD_DIVU_SMALL(x, d);
+    }
+  }
+}
+
+TEST(Daala, TestDIVUrandI31) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  for (int d = 1; d < OD_DIVU_DMAX; d++) {
+    for (int i = 0; i < 1000000; i++) {
+      uint32_t x = rnd.Rand31();
+      GTEST_ASSERT_EQ(x / d, OD_DIVU_SMALL(x, d))
+          << "x=" << x << " d=" << d << " x/d=" << (x / d)
+          << " != " << OD_DIVU_SMALL(x, d);
+    }
+  }
+}