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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
*/
#pragma once
#include <vector>
#include "../qmf/qmf.h"
namespace NAtracDEnc {
template<class TIn>
class Atrac3AnalysisFilterBank {
const static int nInSamples = 1024;
TQmf<TIn, nInSamples> Qmf1;
TQmf<TIn, nInSamples / 2> Qmf2;
TQmf<TIn, nInSamples / 2> Qmf3;
std::vector<TFloat> Buf1;
std::vector<TFloat> Buf2;
public:
Atrac3AnalysisFilterBank() {
Buf1.resize(nInSamples);
Buf2.resize(nInSamples);
}
void Analysis(TIn* pcm, TFloat* subs[4]) {
Qmf1.Analysis(pcm, Buf1.data(), Buf2.data());
Qmf2.Analysis(Buf1.data(), subs[0], subs[1]);
Qmf3.Analysis(Buf2.data(), subs[3], subs[2]);
}
};
} //namespace NAtracDEnc
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