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/*
* This file is part of AtracDEnc.
*
* AtracDEnc is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* AtracDEnc is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with AtracDEnc; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "at3p_mdct.h"
#include <gtest/gtest.h>
#include <vector>
#include <cmath>
using namespace NAtracDEnc;
TEST(TAtpMDCT, ZeroOneBlock) {
std::array<float, 2048> specs;
static std::array<float, 2048> zero;
{
TAt3pMDCT mdct;
static TAt3pMDCT::THistBuf buff;
TAt3pMDCT::TPcmBandsData pcm;
for (size_t i = 0; i < pcm.size(); i++) {
pcm[i] = &zero[i * 128];
}
mdct.Do(specs.data(), pcm, buff, TAt3pMDCTWin::SINE);
for(auto s: specs)
EXPECT_NEAR(s, 0.0, 0.0000000001);
}
{
TAt3pMIDCT midct;
TAt3pMIDCT::TPcmBandsData pcm;
static TAt3pMIDCT::THistBuf buff;
for (size_t i = 0; i < pcm.size(); i++) {
pcm[i] = &zero[i * 128];
}
midct.Do(specs.data(), pcm, buff, TAt3pMDCTWin::SINE);
for(size_t i = 0; i < zero.size(); ++i)
EXPECT_NEAR(zero[i], 0.0, 0.0000000001);
}
}
static void DoAt3pMDCTDcTest(TAt3pMDCTWin first, TAt3pMDCTWin second) {
std::array<float, 4096> specs;
std::array<float, 2048> dc;
for (size_t i = 0; i < dc.size(); i++) {
dc[i] = 1.0;
}
{
TAt3pMDCT mdct;
static TAt3pMDCT::THistBuf buff;
TAt3pMDCT::TPcmBandsData pcm;
for (size_t i = 0; i < pcm.size(); i++) {
pcm[i] = &dc[i * 128];
}
mdct.Do(specs.data(), pcm, buff, first);
mdct.Do(specs.data() + 2048, pcm, buff, second);
}
{
TAt3pMIDCT midct;
std::array<float, 2048> result;
TAt3pMIDCT::TPcmBandsData pcm;
static TAt3pMIDCT::THistBuf buff;
for (size_t i = 0; i < pcm.size(); i++) {
pcm[i] = &result[i * 128];
}
midct.Do(specs.data(), pcm, buff, first);
midct.Do(specs.data() + 2048, pcm, buff, second);
for(size_t i = 0; i < result.size(); ++i) {
EXPECT_NEAR(result[i], dc[i], 0.000001);
}
}
}
TEST(TAtpMDCT, DCSineWin) {
DoAt3pMDCTDcTest(TAt3pMDCTWin::SINE, TAt3pMDCTWin::SINE);
}
TEST(TAtpMDCT, DCSteepWin) {
DoAt3pMDCTDcTest(TAt3pMDCTWin::STEEP, TAt3pMDCTWin::STEEP);
}
TEST(TAtpMDCT, DCSineSteepWin) {
DoAt3pMDCTDcTest(TAt3pMDCTWin::SINE, TAt3pMDCTWin::STEEP);
}
TEST(TAtpMDCT, DCSteepSineWin) {
DoAt3pMDCTDcTest(TAt3pMDCTWin::STEEP, TAt3pMDCTWin::SINE);
}
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