109 lines
3.6 KiB
C++
109 lines
3.6 KiB
C++
/*
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* Copyright (c) 2016, Alliance for Open Media. All rights reserved
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*
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* This source code is subject to the terms of the BSD 2 Clause License and
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* the Alliance for Open Media Patent License 1.0. If the BSD 2 Clause License
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* was not distributed with this source code in the LICENSE file, you can
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* obtain it at www.aomedia.org/license/software. If the Alliance for Open
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* Media Patent License 1.0 was not distributed with this source code in the
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* PATENTS file, you can obtain it at www.aomedia.org/license/patent.
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*/
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#include <memory>
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#include <new>
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#include "av1/encoder/av1_fwd_txfm1d.h"
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#include "test/av1_txfm_test.h"
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using libaom_test::ACMRandom;
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using libaom_test::input_base;
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using libaom_test::reference_hybrid_1d;
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using libaom_test::TYPE_ADST;
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using libaom_test::TYPE_DCT;
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using libaom_test::TYPE_IDTX;
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using libaom_test::TYPE_TXFM;
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namespace {
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const int txfm_type_num = 3;
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const TYPE_TXFM txfm_type_ls[txfm_type_num] = { TYPE_DCT, TYPE_ADST,
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TYPE_IDTX };
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const int txfm_size_num = 5;
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const int txfm_size_ls[] = { 4, 8, 16, 32, 64 };
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const TxfmFunc fwd_txfm_func_ls[][txfm_type_num] = {
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{ av1_fdct4, av1_fadst4, av1_fidentity4_c },
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{ av1_fdct8, av1_fadst8, av1_fidentity8_c },
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{ av1_fdct16, av1_fadst16, av1_fidentity16_c },
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{ av1_fdct32, nullptr, av1_fidentity32_c },
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{ av1_fdct64, nullptr, nullptr },
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};
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// the maximum stage number of fwd/inv 1d dct/adst txfm is 12
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const int8_t cos_bit = 14;
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const int8_t range_bit[12] = { 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20 };
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TEST(av1_fwd_txfm1d, round_shift) {
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EXPECT_EQ(round_shift(7, 1), 4);
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EXPECT_EQ(round_shift(-7, 1), -3);
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EXPECT_EQ(round_shift(7, 2), 2);
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EXPECT_EQ(round_shift(-7, 2), -2);
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EXPECT_EQ(round_shift(8, 2), 2);
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EXPECT_EQ(round_shift(-8, 2), -2);
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}
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TEST(av1_fwd_txfm1d, av1_cospi_arr_data) {
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for (int i = 0; i < 7; i++) {
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for (int j = 0; j < 64; j++) {
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EXPECT_EQ(av1_cospi_arr_data[i][j],
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(int32_t)round(cos(PI * j / 128) * (1 << (cos_bit_min + i))));
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}
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}
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}
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TEST(av1_fwd_txfm1d, accuracy) {
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ACMRandom rnd(ACMRandom::DeterministicSeed());
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for (int si = 0; si < txfm_size_num; ++si) {
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int txfm_size = txfm_size_ls[si];
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std::unique_ptr<int32_t[]> input(new (std::nothrow) int32_t[txfm_size]);
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std::unique_ptr<int32_t[]> output(new (std::nothrow) int32_t[txfm_size]);
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std::unique_ptr<double[]> ref_input(new (std::nothrow) double[txfm_size]);
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std::unique_ptr<double[]> ref_output(new (std::nothrow) double[txfm_size]);
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ASSERT_NE(input, nullptr);
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ASSERT_NE(output, nullptr);
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ASSERT_NE(ref_input, nullptr);
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ASSERT_NE(ref_output, nullptr);
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for (int ti = 0; ti < txfm_type_num; ++ti) {
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TYPE_TXFM txfm_type = txfm_type_ls[ti];
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TxfmFunc fwd_txfm_func = fwd_txfm_func_ls[si][ti];
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int max_error = 7;
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const int count_test_block = 5000;
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if (fwd_txfm_func != nullptr) {
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for (int ti = 0; ti < count_test_block; ++ti) {
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for (int ni = 0; ni < txfm_size; ++ni) {
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input[ni] = rnd.Rand16() % input_base - rnd.Rand16() % input_base;
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ref_input[ni] = static_cast<double>(input[ni]);
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}
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fwd_txfm_func(input.get(), output.get(), cos_bit, range_bit);
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reference_hybrid_1d(ref_input.get(), ref_output.get(), txfm_size,
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txfm_type);
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for (int ni = 0; ni < txfm_size; ++ni) {
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ASSERT_LE(
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abs(output[ni] - static_cast<int32_t>(round(ref_output[ni]))),
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max_error)
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<< "tx size = " << txfm_size << ", tx type = " << txfm_type;
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}
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}
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}
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}
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}
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}
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} // namespace
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