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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 "atrac_scale.h"
#include "../aea.h"
#include <vector>
#include <map>
#include <cstdint>
namespace NAtracDEnc {
namespace NAtrac1 {
using NAtracDEnc::TScaledBlock;
class IAtrac1BitAlloc {
public:
IAtrac1BitAlloc() {};
virtual ~IAtrac1BitAlloc() {};
virtual uint32_t Write(const std::vector<TScaledBlock>& scaledBlocks, const TBlockSize& blockSize, float loudness) = 0;
};
class TBitsBooster {
std::multimap<uint32_t, uint32_t> BitsBoostMap; //bits needed -> position
uint32_t MaxBitsPerIteration;
uint32_t MinKey;
public:
TBitsBooster();
uint32_t ApplyBoost(std::vector<uint32_t>* bitsPerEachBlock, uint32_t cur, uint32_t target);
};
class TAtrac1BitStreamWriter {
ICompressedOutput* Container;
public:
explicit TAtrac1BitStreamWriter(ICompressedOutput* container);
void WriteBitStream(const std::vector<uint32_t>& bitsPerEachBlock, const std::vector<TScaledBlock>& scaledBlocks,
uint32_t bfuAmountIdx, const TBlockSize& blockSize);
};
class TAtrac1SimpleBitAlloc : public TAtrac1BitStreamWriter, public TBitsBooster, public virtual IAtrac1BitAlloc {
std::vector<uint32_t> CalcBitsAllocation(const std::vector<TScaledBlock>& scaledBlocks, const uint32_t bfuNum,
const float spread, const float shift, const TBlockSize& blockSize,
const float loudness);
const uint32_t BfuIdxConst;
const bool FastBfuNumSearch;
static std::vector<float> ATHLong;
uint32_t GetMaxUsedBfuId(const std::vector<uint32_t>& bitsPerEachBlock);
uint32_t CheckBfuUsage(bool* changed, uint32_t curBfuId, const std::vector<uint32_t>& bitsPerEachBlock);
public:
TAtrac1SimpleBitAlloc(ICompressedOutput* container, uint32_t bfuIdxConst, bool fastBfuNumSearch);
~TAtrac1SimpleBitAlloc() {};
uint32_t Write(const std::vector<TScaledBlock>& scaledBlocks, const TBlockSize& blockSize, float loudness) override;
};
} //namespace NAtrac1
} //namespace NAtracDEnc
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