1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
#pragma once
#include "atrac_scale.h"
#include "../bitstream/bitstream.h"
#include "../aea.h"
#include "../atrac/atrac1.h"
#include <vector>
#include <map>
#include <cstdint>
namespace NAtrac1 {
using NAtracDEnc::TScaledBlock;
class IAtrac1BitAlloc {
public:
IAtrac1BitAlloc() {};
virtual ~IAtrac1BitAlloc() {};
virtual uint32_t Write(const std::vector<TScaledBlock>& scaledBlocks, const TBlockSize& blockSize) = 0;
};
class TBitsBooster : public virtual TAtrac1Data {
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 : public virtual TAtrac1Data {
TAea* Container;
public:
explicit TAtrac1BitStreamWriter(TAea* container)
: Container(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 double spread, const double shift, const TBlockSize& blockSize);
const uint32_t BfuIdxConst;
const bool FastBfuNumSearch;
uint32_t GetMaxUsedBfuId(const std::vector<uint32_t>& bitsPerEachBlock);
uint32_t CheckBfuUsage(bool* changed, uint32_t curBfuId, const std::vector<uint32_t>& bitsPerEachBlock);
public:
explicit TAtrac1SimpleBitAlloc(TAea* container, uint32_t bfuIdxConst, bool fastBfuNumSearch)
: TAtrac1BitStreamWriter(container)
, BfuIdxConst(bfuIdxConst)
, FastBfuNumSearch(fastBfuNumSearch)
{}
~TAtrac1SimpleBitAlloc() {};
uint32_t Write(const std::vector<TScaledBlock>& scaledBlocks, const TBlockSize& blockSize) override;
};
}
|
