133 строки
4.0 KiB
C++
133 строки
4.0 KiB
C++
/*
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* Copyright (c) 2015 The WebM project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "av1/common/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_TXFM;
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using libaom_test::TYPE_DCT;
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using libaom_test::TYPE_ADST;
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namespace {
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const int txfm_type_num = 2;
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const TYPE_TXFM txfm_type_ls[2] = { TYPE_DCT, TYPE_ADST };
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const int txfm_size_num = 5;
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const int txfm_size_ls[5] = { 4, 8, 16, 32, 64 };
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const TxfmFunc fwd_txfm_func_ls[2][5] = {
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#if CONFIG_TX64X64
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{ av1_fdct4_new, av1_fdct8_new, av1_fdct16_new, av1_fdct32_new,
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av1_fdct64_new },
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#else
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{ av1_fdct4_new, av1_fdct8_new, av1_fdct16_new, av1_fdct32_new, NULL },
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#endif
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{ av1_fadst4_new, av1_fadst8_new, av1_fadst16_new, av1_fadst32_new, NULL }
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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[12] = { 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14 };
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const int8_t range_bit[12] = { 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32, 32 };
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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, get_max_bit) {
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int max_bit = get_max_bit(8);
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EXPECT_EQ(max_bit, 3);
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}
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TEST(av1_fwd_txfm1d, cospi_arr) {
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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(cospi_arr[i][j],
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(int32_t)round(cos(M_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, clamp_block) {
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int16_t block[5][5] = { { 7, -5, 6, -3, 9 },
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{ 7, -5, 6, -3, 9 },
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{ 7, -5, 6, -3, 9 },
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{ 7, -5, 6, -3, 9 },
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{ 7, -5, 6, -3, 9 } };
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int16_t ref_block[5][5] = { { 7, -5, 6, -3, 9 },
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{ 7, -5, 6, -3, 9 },
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{ 7, -4, 2, -3, 9 },
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{ 7, -4, 2, -3, 9 },
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{ 7, -4, 2, -3, 9 } };
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int row = 2;
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int col = 1;
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int block_size = 3;
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int stride = 5;
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clamp_block(block[row] + col, block_size, stride, -4, 2);
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for (int r = 0; r < stride; r++) {
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for (int c = 0; c < stride; c++) {
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EXPECT_EQ(block[r][c], ref_block[r][c]);
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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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int32_t *input = new int32_t[txfm_size];
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int32_t *output = new int32_t[txfm_size];
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double *ref_input = new double[txfm_size];
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double *ref_output = new double[txfm_size];
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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[ti][si];
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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 != NULL) {
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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, output, cos_bit, range_bit);
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reference_hybrid_1d(ref_input, ref_output, txfm_size, txfm_type);
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for (int ni = 0; ni < txfm_size; ++ni) {
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EXPECT_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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}
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}
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}
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}
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delete[] input;
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delete[] output;
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delete[] ref_input;
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delete[] ref_output;
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}
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}
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} // namespace
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