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#include "atrac1denc.h"
#include <gtest/gtest.h>
#include <vector>
using std::vector;
using namespace NAtracDEnc;
void CheckResult128(const vector<TFloat>& a, const vector<TFloat>& b) {
for (int i = 0; i < 96; ++i ) {
EXPECT_NEAR(a[i], 4 * b[i+32], 0.0000001);
}
}
void CheckResult256(const vector<TFloat>& a, const vector<TFloat>& b) {
for (int i = 0; i < 192; ++i ) {
EXPECT_NEAR(a[i], 2 * b[i+32], 0.0000001);
}
}
TEST(TAtrac1MDCT, TAtrac1MDCTLongEncDec) {
TAtrac1MDCT mdct;
vector<TFloat> low(128 * 2);
vector<TFloat> mid(128 * 2);
vector<TFloat> hi(256 * 2);
vector<TFloat> specs(512 * 2);
vector<TFloat> lowRes(128 * 2);
vector<TFloat> midRes(128 * 2);
vector<TFloat> 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<TFloat> low(128 * 2);
vector<TFloat> mid(128 * 2);
vector<TFloat> hi(256 * 2);
vector<TFloat> specs(512 * 2);
vector<TFloat> lowRes(128 * 2);
vector<TFloat> midRes(128 * 2);
vector<TFloat> hiRes(256 * 2);
for (int i = 0; i < 128; i++) {
low[i] = mid[i] = i;
}
const vector<TFloat> lowCopy = low; //in case of short wondow AtracMDCT changed input buffer during calculation
const vector<TFloat> midCopy = mid;
for (int i = 0; i < 256; i++) {
hi[i] = i;
}
const vector<TFloat> 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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