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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 "../config.h"
#include <math.h>
#include <cstdint>
#include <vector>
#include <cassert>
#include <iostream>
namespace NAtracDEnc {
namespace NAtrac3 {
struct TContainerParams {
const uint32_t Bitrate;
const uint16_t FrameSz;
const bool Js;
};
inline bool operator< (const TContainerParams& x, const TContainerParams& y)
{
return x.Bitrate < y.Bitrate;
}
inline bool operator> (const TContainerParams& x, const TContainerParams& y)
{
return x.Bitrate > y.Bitrate;
}
inline bool operator< (const TContainerParams& x, const unsigned int y)
{
return x.Bitrate < y;
}
inline bool operator> (const TContainerParams& x, const unsigned int y)
{
return x.Bitrate > y;
}
class TAtrac3Data {
public:
static constexpr uint8_t MaxBfus = 32;
static constexpr uint32_t NumSamples = 1024;
static const uint32_t MDCTSz = 512;
static float ScaleTable[64];
static float EncodeWindow[256];
static float DecodeWindow[256];
static float GainLevel[16];
static float GainInterpolation[31];
static constexpr int32_t ExponentOffset = 4;
static constexpr int32_t LocScale = 3;
static constexpr int32_t LocSz = 1 << LocScale;
static constexpr int32_t GainInterpolationPosShift = 15;
static constexpr uint32_t NumSpecs = NumSamples;
static const uint32_t frameSz = 152;
static constexpr float MaxQuant[8] = {
0.0, 1.5, 2.5, 3.5,
4.5, 7.5, 15.5, 31.5
};
static constexpr uint32_t BlockSizeTab[33] = {
0, 8, 16, 24, 32, 40, 48, 56,
64, 80, 96, 112, 128, 144, 160, 176,
192, 224, 256, 288, 320, 352, 384, 416,
448, 480, 512, 576, 640, 704, 768, 896,
1024
};
static constexpr uint32_t const * const SpecsStartShort = &BlockSizeTab[0];
static constexpr uint32_t const * const SpecsStartLong = &BlockSizeTab[0];
static constexpr uint32_t ClcLengthTab[8] = { 0, 4, 3, 3, 4, 4, 5, 6 };
static constexpr int NumQMF = 4;
static constexpr uint32_t MaxSpecs = NumSamples; //1024
static constexpr uint32_t MaxSpecsPerBlock = 128;
static constexpr uint32_t BlocksPerBand[NumQMF + 1] = {0, 18, 26, 30, 32};
static constexpr uint32_t SpecsPerBlock[33] = {
8, 8, 8, 8, 8, 8, 8, 8,
16, 16, 16, 16, 16, 16, 16, 16,
32, 32, 32, 32, 32, 32, 32, 32,
32, 32, 64, 64, 64, 64, 128, 128,
128
};
struct THuffEntry {
const uint8_t Code;
const uint8_t Bits;
};
static constexpr uint8_t HuffTable1Sz = 9;
static constexpr THuffEntry HuffTable1[HuffTable1Sz] = {
{ 0x0, 1 },
{ 0x4, 3 }, { 0x5, 3 },
{ 0xC, 4 }, { 0xD, 4 },
{ 0x1C, 5 }, { 0x1D, 5 }, { 0x1E, 5 }, { 0x1F, 5 }
};
static constexpr uint8_t HuffTable2Sz = 5;
static constexpr THuffEntry HuffTable2[HuffTable2Sz] = {
{ 0x0, 1 },
{ 0x4, 3 }, { 0x5, 3 }, { 0x6, 3 }, { 0x7, 3 }
};
static constexpr uint8_t HuffTable3Sz = 7;
static constexpr THuffEntry HuffTable3[HuffTable3Sz] = {
{ 0x0, 1 },
{ 0x4, 3}, { 0x5, 3 },
{ 0xC, 4 }, { 0xD, 4 }, { 0xE, 4 }, { 0xF, 4 }
};
static constexpr uint8_t HuffTable5Sz = 15;
static constexpr THuffEntry HuffTable5[HuffTable5Sz] = {
{ 0x0, 2 },
{ 0x2, 3 }, { 0x3, 3 },
{ 0x8, 4 }, { 0x9, 4 }, { 0xA, 4 }, { 0xB, 4 }, //{ 0xC, 4 }, { 0xD, 4 },
{ 0x1C, 5 }, { 0x1D, 5 },
{ 0x3C, 6 }, { 0x3D, 6 }, { 0x3E, 6 }, { 0x3F, 6},
{ 0xC, 4 }, { 0xD, 4 } //TODO: is it right table???
};
static constexpr uint8_t HuffTable6Sz = 31;
static constexpr THuffEntry HuffTable6[HuffTable6Sz] = {
{ 0x0, 3 },
{ 0x2, 4 }, { 0x3, 4 }, { 0x4, 4 }, { 0x5, 4 }, { 0x6, 4 }, { 0x7, 4 }, //{ 0x8, 4 }, { 0x9, 4 },
{ 0x14, 5 }, { 0x15, 5 }, { 0x16, 5 }, { 0x17, 5 }, { 0x18, 5 }, { 0x19, 5 },
{ 0x34, 6 }, { 0x35, 6 }, { 0x36, 6 }, { 0x37, 6 }, { 0x38, 6 }, { 0x39, 6 }, { 0x3A, 6 }, { 0x3B, 6 },
{ 0x78, 7 }, { 0x79, 7 }, { 0x7A, 7 }, { 0x7B, 7 }, { 0x7C, 7 }, { 0x7D, 7 }, { 0x7E, 7 }, { 0x7F, 7 },
{ 0x8, 4 }, { 0x9, 4 } //TODO: is it right table???
};
static constexpr uint8_t HuffTable7Sz = 63;
static constexpr THuffEntry HuffTable7[HuffTable7Sz] = {
{ 0x0, 3 },
//{ 0x2, 4 }, { 0x3, 4 },
{ 0x8, 5 }, { 0x9, 5 }, { 0xA, 5}, { 0xB, 5 }, { 0xC, 5 }, { 0xD, 5 }, { 0xE, 5}, { 0xF, 5 }, { 0x10, 5 },
{ 0x11, 5 },
{ 0x24, 6 }, { 0x25, 6 }, { 0x26, 6 }, { 0x27, 6 }, { 0x28, 6 }, { 0x29, 6 }, { 0x2A, 6 }, { 0x2B, 6 },
{ 0x2C, 6 }, { 0x2D, 6 }, { 0x2E, 6 }, { 0x2F, 6 }, { 0x30, 6 }, { 0x31, 6 }, { 0x32, 6 }, { 0x33, 6 },
{ 0x68, 7 }, { 0x69, 7 }, { 0x6A, 7 }, { 0x6B, 7 }, { 0x6C, 7 }, { 0x6D, 7 }, { 0x6E, 7 },
{ 0x6F, 7 }, { 0x70, 7 }, { 0x71, 7 }, { 0x72, 7 }, { 0x73, 7 }, { 0x74, 7 }, { 0x75, 7 },
{ 0xEC, 8 }, { 0xED, 8 }, { 0xEE, 8 }, { 0xEF, 8 }, { 0xF0, 8 }, { 0xF1, 8 }, { 0xF2, 8 }, { 0xF3, 8 },
{ 0xF4, 8 }, { 0xF5, 8 },
{ 0xF6, 8 }, { 0xF7, 8 }, { 0xF8, 8 }, { 0xF9, 8 }, { 0xFA, 8 }, { 0xFB, 8 }, { 0xFC, 8 }, { 0xFD, 8 },
{ 0xFE, 8 }, { 0xFF, 8 },
{ 0x2, 4 }, { 0x3, 4 } //TODO: is it right table???
};
struct THuffTablePair {
const THuffEntry* Table;
const uint32_t Sz;
};
static constexpr THuffTablePair HuffTables[7] {
{ HuffTable1, HuffTable1Sz },
{ HuffTable2, HuffTable2Sz },
{ HuffTable3, HuffTable3Sz },
{ HuffTable1, HuffTable1Sz },
{ HuffTable5, HuffTable5Sz },
{ HuffTable6, HuffTable6Sz },
{ HuffTable7, HuffTable7Sz }
};
public:
TAtrac3Data() {
if (ScaleTable[0] == 0) {
for (uint32_t i = 0; i < 64; i++) {
ScaleTable[i] = pow(2.0, (double)(i / 3.0 - 21.0));
}
}
for (int i = 0; i < 256; i++) {
EncodeWindow[i] = (sin(((i + 0.5) / 256.0 - 0.5) * M_PI) + 1.0)/* * 0.5*/;
}
for (int i = 0; i < 256; i++) {
const double a = EncodeWindow[i];
const double b = EncodeWindow[255-i];
DecodeWindow[i] = 2.0 * a / (a*a + b*b);
}
for (int i = 0; i < 16; i++) {
GainLevel[i] = pow(2.0, ExponentOffset - i);
}
for (int i = 0; i < 31; i++) {
GainInterpolation[i] = pow(2.0, -1.0 / LocSz * (i - 15));
}
}
static uint32_t MantissaToCLcIdx(int32_t mantissa) {
assert(mantissa > -3 && mantissa < 2);
const uint32_t mantissa_clc_rtab[4] = { 2, 3, 0, 1};
return mantissa_clc_rtab[mantissa + 2];
}
static uint32_t MantissasToVlcIndex(int32_t a, int32_t b) {
assert(a > -2 && a < 2);
assert(b > -2 && b < 2);
const uint32_t mantissas_vlc_rtab[9] = { 8, 4, 7, 2, 0, 1, 6, 3, 5 };
const uint8_t idx = 3 * (a + 1) + (b + 1);
return mantissas_vlc_rtab[idx];
}
static constexpr TContainerParams ContainerParams[8] = {
{ 66150, 192, true },
{ 93713, 272, true },
{ 104738, 304, false },
{ 132300, 384, false },
{ 146081, 424, false },
{ 176400, 512, false },
{ 264600, 768, false },
{ 352800, 1024, false }
};
static const TContainerParams* GetContainerParamsForBitrate(uint32_t bitrate);
struct SubbandInfo {
static const uint32_t MaxGainPointsNum = 8;
struct TGainPoint {
uint32_t Level;
uint32_t Location;
};
std::vector<std::vector<TGainPoint>> Info;
SubbandInfo()
{
Info.resize(4);
}
void AddSubbandCurve(uint16_t n, std::vector<TGainPoint>&& curve) {
Info[n] = std::move(curve);
}
uint32_t GetQmfNum() const {
return Info.size();
}
const std::vector<TGainPoint>& GetGainPoints(uint32_t i) const {
return Info[i];
}
void Reset()
{
for (auto& v : Info) {
v.clear();
}
}
};
struct TTonalVal {
const uint16_t Pos;
const double Val;
const uint8_t Bfu;
};
typedef std::vector<TTonalVal> TTonalComponents;
};
struct TAtrac3EncoderSettings {
TAtrac3EncoderSettings(uint32_t bitrate, bool noGainControll,
bool noTonalComponents, uint8_t sourceChannels, uint32_t bfuIdxConst)
: ConteinerParams(TAtrac3Data::GetContainerParamsForBitrate(bitrate))
, NoGainControll(noGainControll)
, NoTonalComponents(noTonalComponents)
, SourceChannels(sourceChannels)
, BfuIdxConst(bfuIdxConst)
{ }
const TContainerParams* ConteinerParams;
const bool NoGainControll;
const bool NoTonalComponents;
const uint8_t SourceChannels;
const uint32_t BfuIdxConst;
};
} // namespace NAtrac3
} // namespace NAtracDEnc
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