1 files changed, 108 insertions, 0 deletions
diff --git a/third_party/aom/test/av1_fwd_txfm1d_test.cc b/third_party/aom/test/av1_fwd_txfm1d_test.cc
new file mode 100644
index 0000000000..6bae9f8364
--- /dev/null
+++ b/third_party/aom/test/av1_fwd_txfm1d_test.cc
@@ -0,0 +1,108 @@
+/*
+ * 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 <memory>
+#include <new>
+
+#include "av1/encoder/av1_fwd_txfm1d.h"
+#include "test/av1_txfm_test.h"
+
+using libaom_test::ACMRandom;
+using libaom_test::input_base;
+using libaom_test::reference_hybrid_1d;
+using libaom_test::TYPE_ADST;
+using libaom_test::TYPE_DCT;
+using libaom_test::TYPE_IDTX;
+using libaom_test::TYPE_TXFM;
+
+namespace {
+const int txfm_type_num = 3;
+const TYPE_TXFM txfm_type_ls[txfm_type_num] = { TYPE_DCT, TYPE_ADST,
+                                                TYPE_IDTX };
+
+const int txfm_size_num = 5;
+
+const int txfm_size_ls[] = { 4, 8, 16, 32, 64 };
+
+const TxfmFunc fwd_txfm_func_ls[][txfm_type_num] = {
+  { av1_fdct4, av1_fadst4, av1_fidentity4_c },
+  { av1_fdct8, av1_fadst8, av1_fidentity8_c },
+  { av1_fdct16, av1_fadst16, av1_fidentity16_c },
+  { av1_fdct32, nullptr, av1_fidentity32_c },
+  { av1_fdct64, nullptr, nullptr },
+};
+
+// the maximum stage number of fwd/inv 1d dct/adst txfm is 12
+const int8_t cos_bit = 13;
+const int8_t range_bit[12] = { 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 };
+
+TEST(av1_fwd_txfm1d, round_shift) {
+  EXPECT_EQ(round_shift(7, 1), 4);
+  EXPECT_EQ(round_shift(-7, 1), -3);
+
+  EXPECT_EQ(round_shift(7, 2), 2);
+  EXPECT_EQ(round_shift(-7, 2), -2);
+
+  EXPECT_EQ(round_shift(8, 2), 2);
+  EXPECT_EQ(round_shift(-8, 2), -2);
+}
+
+TEST(av1_fwd_txfm1d, av1_cospi_arr_data) {
+  for (int i = 0; i < 4; i++) {
+    for (int j = 0; j < 64; j++) {
+      EXPECT_EQ(av1_cospi_arr_data[i][j],
+                (int32_t)round(cos(PI * j / 128) * (1 << (cos_bit_min + i))));
+    }
+  }
+}
+
+TEST(av1_fwd_txfm1d, accuracy) {
+  ACMRandom rnd(ACMRandom::DeterministicSeed());
+  for (int si = 0; si < txfm_size_num; ++si) {
+    int txfm_size = txfm_size_ls[si];
+    std::unique_ptr<int32_t[]> input(new (std::nothrow) int32_t[txfm_size]);
+    std::unique_ptr<int32_t[]> output(new (std::nothrow) int32_t[txfm_size]);
+    std::unique_ptr<double[]> ref_input(new (std::nothrow) double[txfm_size]);
+    std::unique_ptr<double[]> ref_output(new (std::nothrow) double[txfm_size]);
+    ASSERT_NE(input, nullptr);
+    ASSERT_NE(output, nullptr);
+    ASSERT_NE(ref_input, nullptr);
+    ASSERT_NE(ref_output, nullptr);
+
+    for (int ti = 0; ti < txfm_type_num; ++ti) {
+      TYPE_TXFM txfm_type = txfm_type_ls[ti];
+      TxfmFunc fwd_txfm_func = fwd_txfm_func_ls[si][ti];
+      int max_error = 7;
+
+      const int count_test_block = 5000;
+      if (fwd_txfm_func != nullptr) {
+        for (int i = 0; i < count_test_block; ++i) {
+          for (int ni = 0; ni < txfm_size; ++ni) {
+            input[ni] = rnd.Rand16() % input_base - rnd.Rand16() % input_base;
+            ref_input[ni] = static_cast<double>(input[ni]);
+          }
+
+          fwd_txfm_func(input.get(), output.get(), cos_bit, range_bit);
+          reference_hybrid_1d(ref_input.get(), ref_output.get(), txfm_size,
+                              txfm_type);
+
+          for (int ni = 0; ni < txfm_size; ++ni) {
+            ASSERT_LE(
+                abs(output[ni] - static_cast<int32_t>(round(ref_output[ni]))),
+                max_error)
+                << "tx size = " << txfm_size << ", tx type = " << txfm_type;
+          }
+        }
+      }
+    }
+  }
+}
+}  // namespace