1 files changed, 133 insertions, 0 deletions
diff --git a/media/libaom/src/test/hash_test.cc b/media/libaom/src/test/hash_test.cc
new file mode 100644
index 000000000..e9f7f63c9
--- /dev/null
+++ b/media/libaom/src/test/hash_test.cc
@@ -0,0 +1,133 @@
+/*
+ * Copyright (c) 2018, 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 <cstdlib>
+#include <new>
+
+#include "config/aom_config.h"
+#include "config/av1_rtcd.h"
+
+#include "aom_ports/aom_timer.h"
+#include "av1/encoder/hash.h"
+#include "test/acm_random.h"
+#include "test/util.h"
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+namespace {
+
+typedef uint32_t (*get_crc32c_value_func)(void *calculator, uint8_t *p,
+                                          int length);
+
+typedef ::testing::tuple<get_crc32c_value_func, int> HashParam;
+
+class AV1Crc32cHashTest : public ::testing::TestWithParam<HashParam> {
+ public:
+  ~AV1Crc32cHashTest();
+  void SetUp();
+
+  void TearDown();
+
+ protected:
+  void RunCheckOutput(get_crc32c_value_func test_impl);
+  void RunSpeedTest(get_crc32c_value_func test_impl);
+
+  void RunZeroTest(get_crc32c_value_func test_impl);
+
+  libaom_test::ACMRandom rnd_;
+  CRC32C calc_;
+  uint8_t *buffer_;
+  int bsize_;
+  int length_;
+};
+
+AV1Crc32cHashTest::~AV1Crc32cHashTest() { ; }
+
+void AV1Crc32cHashTest::SetUp() {
+  rnd_.Reset(libaom_test::ACMRandom::DeterministicSeed());
+  av1_crc32c_calculator_init(&calc_);
+
+  bsize_ = GET_PARAM(1);
+  length_ = bsize_ * bsize_ * sizeof(uint16_t);
+  buffer_ = new uint8_t[length_];
+  ASSERT_TRUE(buffer_ != NULL);
+  for (int i = 0; i < length_; ++i) {
+    buffer_[i] = rnd_.Rand8();
+  }
+}
+
+void AV1Crc32cHashTest::TearDown() { delete[] buffer_; }
+
+void AV1Crc32cHashTest::RunCheckOutput(get_crc32c_value_func test_impl) {
+  get_crc32c_value_func ref_impl = av1_get_crc32c_value_c;
+  // for the same buffer crc should be the same
+  uint32_t crc0 = test_impl(&calc_, buffer_, length_);
+  uint32_t crc1 = test_impl(&calc_, buffer_, length_);
+  uint32_t crc2 = ref_impl(&calc_, buffer_, length_);
+  ASSERT_EQ(crc0, crc1);
+  ASSERT_EQ(crc0, crc2);  // should equal to software version
+  // modify buffer
+  buffer_[0] += 1;
+  uint32_t crc3 = test_impl(&calc_, buffer_, length_);
+  uint32_t crc4 = ref_impl(&calc_, buffer_, length_);
+  ASSERT_NE(crc0, crc3);  // crc shoud not equal to previous one
+  ASSERT_EQ(crc3, crc4);
+}
+
+void AV1Crc32cHashTest::RunSpeedTest(get_crc32c_value_func test_impl) {
+  get_crc32c_value_func impls[] = { av1_get_crc32c_value_c, test_impl };
+  const int repeat = 10000000 / (bsize_ + bsize_);
+
+  aom_usec_timer timer;
+  double time[2];
+  for (int i = 0; i < 2; ++i) {
+    aom_usec_timer_start(&timer);
+    for (int j = 0; j < repeat; ++j) {
+      impls[i](&calc_, buffer_, length_);
+    }
+    aom_usec_timer_mark(&timer);
+    time[i] = static_cast<double>(aom_usec_timer_elapsed(&timer));
+  }
+  printf("hash %3dx%-3d:%7.2f/%7.2fus", bsize_, bsize_, time[0], time[1]);
+  printf("(%3.2f)\n", time[0] / time[1]);
+}
+
+void AV1Crc32cHashTest::RunZeroTest(get_crc32c_value_func test_impl) {
+  uint8_t buffer0[1024] = { 0 };
+  // for buffer with different size the crc should not be the same
+  const uint32_t crc0 = test_impl(&calc_, buffer0, 32);
+  const uint32_t crc1 = test_impl(&calc_, buffer0, 128);
+  const uint32_t crc2 = test_impl(&calc_, buffer0, 1024);
+  ASSERT_NE(crc0, crc1);
+  ASSERT_NE(crc0, crc2);
+  ASSERT_NE(crc1, crc2);
+}
+
+TEST_P(AV1Crc32cHashTest, CheckOutput) { RunCheckOutput(GET_PARAM(0)); }
+
+TEST_P(AV1Crc32cHashTest, CheckZero) { RunZeroTest(GET_PARAM(0)); }
+
+TEST_P(AV1Crc32cHashTest, DISABLED_Speed) { RunSpeedTest(GET_PARAM(0)); }
+
+const int kValidBlockSize[] = { 64, 32, 8, 4 };
+
+INSTANTIATE_TEST_CASE_P(
+    C, AV1Crc32cHashTest,
+    ::testing::Combine(::testing::Values(&av1_get_crc32c_value_c),
+                       ::testing::ValuesIn(kValidBlockSize)));
+
+#if HAVE_SSE4_2
+INSTANTIATE_TEST_CASE_P(
+    SSE4_2, AV1Crc32cHashTest,
+    ::testing::Combine(::testing::Values(&av1_get_crc32c_value_sse4_2),
+                       ::testing::ValuesIn(kValidBlockSize)));
+#endif
+
+}  // namespace