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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 "atrac1denc.h"
#include <lib/mdct/mdct_ut_common.h>
#include <gtest/gtest.h>
#include <vector>
using std::vector;
using namespace NAtracDEnc;
void CheckResult128(const vector<float>& a, const vector<float>& b) {
float m = 0.0;
for (int i = 0; i < a.size(); i++) {
m = fmax(m, (float)a[i]);
}
auto eps = CalcEps(m);
for (int i = 0; i < 96; ++i ) {
EXPECT_NEAR(a[i], 4 * b[i+32], eps);
}
}
void CheckResult256(const vector<float>& a, const vector<float>& b) {
float m = 0.0;
for (int i = 0; i < a.size(); i++) {
m = fmax(m, (float)a[i]);
}
auto eps = CalcEps(m);
for (int i = 0; i < 192; ++i ) {
EXPECT_NEAR(a[i], 2 * b[i+32], eps);
}
}
TEST(TAtrac1MDCT, TAtrac1MDCTLongEncDec) {
TAtrac1MDCT mdct;
vector<float> low(128 * 2);
vector<float> mid(128 * 2);
vector<float> hi(256 * 2);
vector<float> specs(512 * 2);
vector<float> lowRes(128 * 2);
vector<float> midRes(128 * 2);
vector<float> hiRes(256 * 2);
for (int i = 0; i < 128; i++) {
low[i] = mid[i] = i;
}
for (int i = 0; i < 256; i++) {
hi[i] = i;
}
const TBlockSize blockSize(false, false, false);
mdct.Mdct(&specs[0], &low[0], &mid[0], &hi[0], blockSize);
mdct.IMdct(&specs[0], blockSize, &lowRes[0], &midRes[0], &hiRes[0]);
CheckResult128(low, lowRes);
CheckResult128(mid, midRes);
CheckResult256(hi, hiRes);
}
TEST(TAtrac1MDCT, TAtrac1MDCTShortEncDec) {
TAtrac1MDCT mdct;
vector<float> low(128 * 2);
vector<float> mid(128 * 2);
vector<float> hi(256 * 2);
vector<float> specs(512 * 2);
vector<float> lowRes(128 * 2);
vector<float> midRes(128 * 2);
vector<float> hiRes(256 * 2);
for (int i = 0; i < 128; i++) {
low[i] = mid[i] = i;
}
const vector<float> lowCopy = low; //in case of short wondow AtracMDCT changed input buffer during calculation
const vector<float> midCopy = mid;
for (int i = 0; i < 256; i++) {
hi[i] = i;
}
const vector<float> hiCopy = hi;
const TBlockSize blockSize(true, true, true); //short
mdct.Mdct(&specs[0], &low[0], &mid[0], &hi[0], blockSize);
mdct.IMdct(&specs[0], blockSize, &lowRes[0], &midRes[0], &hiRes[0]);
CheckResult128(lowCopy, lowRes);
CheckResult128(midCopy, midRes);
CheckResult256(hiCopy, hiRes);
}
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