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, 192 insertions, 0 deletions

diff --git a/third_party/aom/test/sum_squares_test.cc b/third_party/aom/test/sum_squares_test.cc
new file mode 100644
index 000000000..b8701c196
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+++ b/third_party/aom/test/sum_squares_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 <cmath>
+#include <cstdlib>
+#include <string>
+
+#include "third_party/googletest/src/googletest/include/gtest/gtest.h"
+
+#include "./aom_config.h"
+#include "./aom_dsp_rtcd.h"
+#include "aom_ports/mem.h"
+#include "test/acm_random.h"
+#include "test/clear_system_state.h"
+#include "test/register_state_check.h"
+#include "test/util.h"
+#include "test/function_equivalence_test.h"
+
+using libaom_test::ACMRandom;
+using libaom_test::FunctionEquivalenceTest;
+
+namespace {
+const int kNumIterations = 10000;
+
+static const int16_t kInt13Max = (1 << 12) - 1;
+
+typedef uint64_t (*SSI16Func)(const int16_t *src, int stride, int width,
+                              int height);
+typedef libaom_test::FuncParam<SSI16Func> TestFuncs;
+
+class SumSquaresTest : public ::testing::TestWithParam<TestFuncs> {
+ public:
+  virtual ~SumSquaresTest() {}
+  virtual void SetUp() { params_ = this->GetParam(); }
+
+  virtual void TearDown() { libaom_test::ClearSystemState(); }
+
+ protected:
+  TestFuncs params_;
+};
+
+TEST_P(SumSquaresTest, OperationCheck) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  DECLARE_ALIGNED(16, int16_t, src[256 * 256]);
+
+  int failed = 0;
+
+  const int msb = 11;  // Up to 12 bit input
+  const int limit = 1 << (msb + 1);
+
+  for (int k = 0; k < kNumIterations; k++) {
+    int width = 4 * rnd(32);   // Up to 128x128
+    int height = 4 * rnd(32);  // Up to 128x128
+    int stride = 4 << rnd(7);  // Up to 256 stride
+    while (stride < width) {   // Make sure it's valid
+      stride = 4 << rnd(7);
+    }
+
+    for (int ii = 0; ii < height; ii++) {
+      for (int jj = 0; jj < width; jj++) {
+        src[ii * stride + jj] = rnd(2) ? rnd(limit) : -rnd(limit);
+      }
+    }
+
+    const uint64_t res_ref = params_.ref_func(src, stride, width, height);
+    uint64_t res_tst;
+    ASM_REGISTER_STATE_CHECK(res_tst =
+                                 params_.tst_func(src, stride, width, height));
+
+    if (!failed) {
+      failed = res_ref != res_tst;
+      EXPECT_EQ(res_ref, res_tst)
+          << "Error: Sum Squares Test"
+          << " C output does not match optimized output.";
+    }
+  }
+}
+
+TEST_P(SumSquaresTest, ExtremeValues) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  DECLARE_ALIGNED(16, int16_t, src[256 * 256]);
+
+  int failed = 0;
+
+  const int msb = 11;  // Up to 12 bit input
+  const int limit = 1 << (msb + 1);
+
+  for (int k = 0; k < kNumIterations; k++) {
+    int width = 4 * rnd(32);   // Up to 128x128
+    int height = 4 * rnd(32);  // Up to 128x128
+    int stride = 4 << rnd(7);  // Up to 256 stride
+    while (stride < width) {   // Make sure it's valid
+      stride = 4 << rnd(7);
+    }
+
+    int val = rnd(2) ? limit - 1 : -(limit - 1);
+    for (int ii = 0; ii < height; ii++) {
+      for (int jj = 0; jj < width; jj++) {
+        src[ii * stride + jj] = val;
+      }
+    }
+
+    const uint64_t res_ref = params_.ref_func(src, stride, width, height);
+    uint64_t res_tst;
+    ASM_REGISTER_STATE_CHECK(res_tst =
+                                 params_.tst_func(src, stride, width, height));
+
+    if (!failed) {
+      failed = res_ref != res_tst;
+      EXPECT_EQ(res_ref, res_tst)
+          << "Error: Sum Squares Test"
+          << " C output does not match optimized output.";
+    }
+  }
+}
+
+#if HAVE_SSE2
+
+INSTANTIATE_TEST_CASE_P(
+    SSE2, SumSquaresTest,
+    ::testing::Values(TestFuncs(&aom_sum_squares_2d_i16_c,
+                                &aom_sum_squares_2d_i16_sse2)));
+
+#endif  // HAVE_SSE2
+
+//////////////////////////////////////////////////////////////////////////////
+// 1D version
+//////////////////////////////////////////////////////////////////////////////
+
+typedef uint64_t (*F1D)(const int16_t *src, uint32_t N);
+typedef libaom_test::FuncParam<F1D> TestFuncs1D;
+
+class SumSquares1DTest : public FunctionEquivalenceTest<F1D> {
+ protected:
+  static const int kIterations = 1000;
+  static const int kMaxSize = 256;
+};
+
+TEST_P(SumSquares1DTest, RandomValues) {
+  DECLARE_ALIGNED(16, int16_t, src[kMaxSize * kMaxSize]);
+
+  for (int iter = 0; iter < kIterations && !HasFatalFailure(); ++iter) {
+    for (int i = 0; i < kMaxSize * kMaxSize; ++i)
+      src[i] = rng_(kInt13Max * 2 + 1) - kInt13Max;
+
+    const int N = rng_(2) ? rng_(kMaxSize * kMaxSize + 1 - kMaxSize) + kMaxSize
+                          : rng_(kMaxSize) + 1;
+
+    const uint64_t ref_res = params_.ref_func(src, N);
+    uint64_t tst_res;
+    ASM_REGISTER_STATE_CHECK(tst_res = params_.tst_func(src, N));
+
+    ASSERT_EQ(ref_res, tst_res);
+  }
+}
+
+TEST_P(SumSquares1DTest, ExtremeValues) {
+  DECLARE_ALIGNED(16, int16_t, src[kMaxSize * kMaxSize]);
+
+  for (int iter = 0; iter < kIterations && !HasFatalFailure(); ++iter) {
+    if (rng_(2)) {
+      for (int i = 0; i < kMaxSize * kMaxSize; ++i) src[i] = kInt13Max;
+    } else {
+      for (int i = 0; i < kMaxSize * kMaxSize; ++i) src[i] = -kInt13Max;
+    }
+
+    const int N = rng_(2) ? rng_(kMaxSize * kMaxSize + 1 - kMaxSize) + kMaxSize
+                          : rng_(kMaxSize) + 1;
+
+    const uint64_t ref_res = params_.ref_func(src, N);
+    uint64_t tst_res;
+    ASM_REGISTER_STATE_CHECK(tst_res = params_.tst_func(src, N));
+
+    ASSERT_EQ(ref_res, tst_res);
+  }
+}
+
+#if HAVE_SSE2
+INSTANTIATE_TEST_CASE_P(SSE2, SumSquares1DTest,
+                        ::testing::Values(TestFuncs1D(
+                            aom_sum_squares_i16_c, aom_sum_squares_i16_sse2)));
+
+#endif  // HAVE_SSE2
+}  // namespace