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daedalus/Source/HLEAudio/ABI3mp3.cpp

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/*
Copyright (C) 2003 Azimer
Copyright (C) 2001,2006 StrmnNrmn
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
//
// N.B. This source code is derived from Azimer's Audio plugin (v0.55?)
// and modified by StrmnNrmn to work with Daedalus PSP. Thanks Azimer!
// Drop me a line if you get chance :)
//
#include "Base/Types.h"
#include "BuildOptions.h"
#include <string.h>
#include "Base/MathUtil.h"
#include "Debug/DBGConsole.h"
#include "HLEAudio/HLEAudioInternal.h"
namespace {
struct CMP3Decode {
u8 mp3data[0x1000];
s32 v[32];
u32 inPtr, outPtr;
u32 t6; // = 0x08A0; // I think these are temporary storage buffers
u32 t5; // = 0x0AC0;
u32 t4; // = (k0 & 0x1E);
void MP3AB0();
void InnerLoop();
void Decode(AudioHLECommand command);
};
// static const u16 DeWindowLUT[0x420] = {
std::array< const u16, 0x420> DeWindowLUT = {
0x0000, 0xFFF3, 0x005D, 0xFF38, 0x037A, 0xF736, 0x0B37, 0xC00E, 0x7FFF,
0x3FF2, 0x0B37, 0x08CA, 0x037A, 0x00C8, 0x005D, 0x000D, 0x0000, 0xFFF3,
0x005D, 0xFF38, 0x037A, 0xF736, 0x0B37, 0xC00E, 0x7FFF, 0x3FF2, 0x0B37,
0x08CA, 0x037A, 0x00C8, 0x005D, 0x000D, 0x0000, 0xFFF2, 0x005F, 0xFF1D,
0x0369, 0xF697, 0x0A2A, 0xBCE7, 0x7FEB, 0x3CCB, 0x0C2B, 0x082B, 0x0385,
0x00AF, 0x005B, 0x000B, 0x0000, 0xFFF2, 0x005F, 0xFF1D, 0x0369, 0xF697,
0x0A2A, 0xBCE7, 0x7FEB, 0x3CCB, 0x0C2B, 0x082B, 0x0385, 0x00AF, 0x005B,
0x000B, 0x0000, 0xFFF1, 0x0061, 0xFF02, 0x0354, 0xF5F9, 0x0905, 0xB9C4,
0x7FB0, 0x39A4, 0x0D08, 0x078C, 0x038C, 0x0098, 0x0058, 0x000A, 0x0000,
0xFFF1, 0x0061, 0xFF02, 0x0354, 0xF5F9, 0x0905, 0xB9C4, 0x7FB0, 0x39A4,
0x0D08, 0x078C, 0x038C, 0x0098, 0x0058, 0x000A, 0x0000, 0xFFEF, 0x0062,
0xFEE6, 0x033B, 0xF55C, 0x07C8, 0xB6A4, 0x7F4D, 0x367E, 0x0DCE, 0x06EE,
0x038F, 0x0080, 0x0056, 0x0009, 0x0000, 0xFFEF, 0x0062, 0xFEE6, 0x033B,
0xF55C, 0x07C8, 0xB6A4, 0x7F4D, 0x367E, 0x0DCE, 0x06EE, 0x038F, 0x0080,
0x0056, 0x0009, 0x0000, 0xFFEE, 0x0063, 0xFECA, 0x031C, 0xF4C3, 0x0671,
0xB38C, 0x7EC2, 0x335D, 0x0E7C, 0x0652, 0x038E, 0x006B, 0x0053, 0x0008,
0x0000, 0xFFEE, 0x0063, 0xFECA, 0x031C, 0xF4C3, 0x0671, 0xB38C, 0x7EC2,
0x335D, 0x0E7C, 0x0652, 0x038E, 0x006B, 0x0053, 0x0008, 0x0000, 0xFFEC,
0x0064, 0xFEAC, 0x02F7, 0xF42C, 0x0502, 0xB07C, 0x7E12, 0x3041, 0x0F14,
0x05B7, 0x038A, 0x0056, 0x0050, 0x0007, 0x0000, 0xFFEC, 0x0064, 0xFEAC,
0x02F7, 0xF42C, 0x0502, 0xB07C, 0x7E12, 0x3041, 0x0F14, 0x05B7, 0x038A,
0x0056, 0x0050, 0x0007, 0x0000, 0xFFEB, 0x0064, 0xFE8E, 0x02CE, 0xF399,
0x037A, 0xAD75, 0x7D3A, 0x2D2C, 0x0F97, 0x0520, 0x0382, 0x0043, 0x004D,
0x0007, 0x0000, 0xFFEB, 0x0064, 0xFE8E, 0x02CE, 0xF399, 0x037A, 0xAD75,
0x7D3A, 0x2D2C, 0x0F97, 0x0520, 0x0382, 0x0043, 0x004D, 0x0007, 0xFFFF,
0xFFE9, 0x0063, 0xFE6F, 0x029E, 0xF30B, 0x01D8, 0xAA7B, 0x7C3D, 0x2A1F,
0x1004, 0x048B, 0x0377, 0x0030, 0x004A, 0x0006, 0xFFFF, 0xFFE9, 0x0063,
0xFE6F, 0x029E, 0xF30B, 0x01D8, 0xAA7B, 0x7C3D, 0x2A1F, 0x1004, 0x048B,
0x0377, 0x0030, 0x004A, 0x0006, 0xFFFF, 0xFFE7, 0x0062, 0xFE4F, 0x0269,
0xF282, 0x001F, 0xA78D, 0x7B1A, 0x271C, 0x105D, 0x03F9, 0x036A, 0x001F,
0x0046, 0x0006, 0xFFFF, 0xFFE7, 0x0062, 0xFE4F, 0x0269, 0xF282, 0x001F,
0xA78D, 0x7B1A, 0x271C, 0x105D, 0x03F9, 0x036A, 0x001F, 0x0046, 0x0006,
0xFFFF, 0xFFE4, 0x0061, 0xFE2F, 0x022F, 0xF1FF, 0xFE4C, 0xA4AF, 0x79D3,
0x2425, 0x10A2, 0x036C, 0x0359, 0x0010, 0x0043, 0x0005, 0xFFFF, 0xFFE4,
0x0061, 0xFE2F, 0x022F, 0xF1FF, 0xFE4C, 0xA4AF, 0x79D3, 0x2425, 0x10A2,
0x036C, 0x0359, 0x0010, 0x0043, 0x0005, 0xFFFF, 0xFFE2, 0x005E, 0xFE10,
0x01EE, 0xF184, 0xFC61, 0xA1E1, 0x7869, 0x2139, 0x10D3, 0x02E3, 0x0346,
0x0001, 0x0040, 0x0004, 0xFFFF, 0xFFE2, 0x005E, 0xFE10, 0x01EE, 0xF184,
0xFC61, 0xA1E1, 0x7869, 0x2139, 0x10D3, 0x02E3, 0x0346, 0x0001, 0x0040,
0x0004, 0xFFFF, 0xFFE0, 0x005B, 0xFDF0, 0x01A8, 0xF111, 0xFA5F, 0x9F27,
0x76DB, 0x1E5C, 0x10F2, 0x025E, 0x0331, 0xFFF3, 0x003D, 0x0004, 0xFFFF,
0xFFE0, 0x005B, 0xFDF0, 0x01A8, 0xF111, 0xFA5F, 0x9F27, 0x76DB, 0x1E5C,
0x10F2, 0x025E, 0x0331, 0xFFF3, 0x003D, 0x0004, 0xFFFF, 0xFFDE, 0x0057,
0xFDD0, 0x015B, 0xF0A7, 0xF845, 0x9C80, 0x752C, 0x1B8E, 0x1100, 0x01DE,
0x0319, 0xFFE7, 0x003A, 0x0003, 0xFFFF, 0xFFDE, 0x0057, 0xFDD0, 0x015B,
0xF0A7, 0xF845, 0x9C80, 0x752C, 0x1B8E, 0x1100, 0x01DE, 0x0319, 0xFFE7,
0x003A, 0x0003, 0xFFFE, 0xFFDB, 0x0053, 0xFDB0, 0x0108, 0xF046, 0xF613,
0x99EE, 0x735C, 0x18D1, 0x10FD, 0x0163, 0x0300, 0xFFDC, 0x0037, 0x0003,
0xFFFE, 0xFFDB, 0x0053, 0xFDB0, 0x0108, 0xF046, 0xF613, 0x99EE, 0x735C,
0x18D1, 0x10FD, 0x0163, 0x0300, 0xFFDC, 0x0037, 0x0003, 0xFFFE, 0xFFD8,
0x004D, 0xFD90, 0x00B0, 0xEFF0, 0xF3CC, 0x9775, 0x716C, 0x1624, 0x10EA,
0x00EE, 0x02E5, 0xFFD2, 0x0033, 0x0003, 0xFFFE, 0xFFD8, 0x004D, 0xFD90,
0x00B0, 0xEFF0, 0xF3CC, 0x9775, 0x716C, 0x1624, 0x10EA, 0x00EE, 0x02E5,
0xFFD2, 0x0033, 0x0003, 0xFFFE, 0xFFD6, 0x0047, 0xFD72, 0x0051, 0xEFA6,
0xF16F, 0x9514, 0x6F5E, 0x138A, 0x10C8, 0x007E, 0x02CA, 0xFFC9, 0x0030,
0x0003, 0xFFFE, 0xFFD6, 0x0047, 0xFD72, 0x0051, 0xEFA6, 0xF16F, 0x9514,
0x6F5E, 0x138A, 0x10C8, 0x007E, 0x02CA, 0xFFC9, 0x0030, 0x0003, 0xFFFE,
0xFFD3, 0x0040, 0xFD54, 0xFFEC, 0xEF68, 0xEEFC, 0x92CD, 0x6D33, 0x1104,
0x1098, 0x0014, 0x02AC, 0xFFC0, 0x002D, 0x0002, 0xFFFE, 0xFFD3, 0x0040,
0xFD54, 0xFFEC, 0xEF68, 0xEEFC, 0x92CD, 0x6D33, 0x1104, 0x1098, 0x0014,
0x02AC, 0xFFC0, 0x002D, 0x0002, 0x0030, 0xFFC9, 0x02CA, 0x007E, 0x10C8,
0x138A, 0x6F5E, 0x9514, 0xF16F, 0xEFA6, 0x0051, 0xFD72, 0x0047, 0xFFD6,
0xFFFE, 0x0003, 0x0030, 0xFFC9, 0x02CA, 0x007E, 0x10C8, 0x138A, 0x6F5E,
0x9514, 0xF16F, 0xEFA6, 0x0051, 0xFD72, 0x0047, 0xFFD6, 0xFFFE, 0x0003,
0x0033, 0xFFD2, 0x02E5, 0x00EE, 0x10EA, 0x1624, 0x716C, 0x9775, 0xF3CC,
0xEFF0, 0x00B0, 0xFD90, 0x004D, 0xFFD8, 0xFFFE, 0x0003, 0x0033, 0xFFD2,
0x02E5, 0x00EE, 0x10EA, 0x1624, 0x716C, 0x9775, 0xF3CC, 0xEFF0, 0x00B0,
0xFD90, 0x004D, 0xFFD8, 0xFFFE, 0x0003, 0x0037, 0xFFDC, 0x0300, 0x0163,
0x10FD, 0x18D1, 0x735C, 0x99EE, 0xF613, 0xF046, 0x0108, 0xFDB0, 0x0053,
0xFFDB, 0xFFFE, 0x0003, 0x0037, 0xFFDC, 0x0300, 0x0163, 0x10FD, 0x18D1,
0x735C, 0x99EE, 0xF613, 0xF046, 0x0108, 0xFDB0, 0x0053, 0xFFDB, 0xFFFE,
0x0003, 0x003A, 0xFFE7, 0x0319, 0x01DE, 0x1100, 0x1B8E, 0x752C, 0x9C80,
0xF845, 0xF0A7, 0x015B, 0xFDD0, 0x0057, 0xFFDE, 0xFFFF, 0x0003, 0x003A,
0xFFE7, 0x0319, 0x01DE, 0x1100, 0x1B8E, 0x752C, 0x9C80, 0xF845, 0xF0A7,
0x015B, 0xFDD0, 0x0057, 0xFFDE, 0xFFFF, 0x0004, 0x003D, 0xFFF3, 0x0331,
0x025E, 0x10F2, 0x1E5C, 0x76DB, 0x9F27, 0xFA5F, 0xF111, 0x01A8, 0xFDF0,
0x005B, 0xFFE0, 0xFFFF, 0x0004, 0x003D, 0xFFF3, 0x0331, 0x025E, 0x10F2,
0x1E5C, 0x76DB, 0x9F27, 0xFA5F, 0xF111, 0x01A8, 0xFDF0, 0x005B, 0xFFE0,
0xFFFF, 0x0004, 0x0040, 0x0001, 0x0346, 0x02E3, 0x10D3, 0x2139, 0x7869,
0xA1E1, 0xFC61, 0xF184, 0x01EE, 0xFE10, 0x005E, 0xFFE2, 0xFFFF, 0x0004,
0x0040, 0x0001, 0x0346, 0x02E3, 0x10D3, 0x2139, 0x7869, 0xA1E1, 0xFC61,
0xF184, 0x01EE, 0xFE10, 0x005E, 0xFFE2, 0xFFFF, 0x0005, 0x0043, 0x0010,
0x0359, 0x036C, 0x10A2, 0x2425, 0x79D3, 0xA4AF, 0xFE4C, 0xF1FF, 0x022F,
0xFE2F, 0x0061, 0xFFE4, 0xFFFF, 0x0005, 0x0043, 0x0010, 0x0359, 0x036C,
0x10A2, 0x2425, 0x79D3, 0xA4AF, 0xFE4C, 0xF1FF, 0x022F, 0xFE2F, 0x0061,
0xFFE4, 0xFFFF, 0x0006, 0x0046, 0x001F, 0x036A, 0x03F9, 0x105D, 0x271C,
0x7B1A, 0xA78D, 0x001F, 0xF282, 0x0269, 0xFE4F, 0x0062, 0xFFE7, 0xFFFF,
0x0006, 0x0046, 0x001F, 0x036A, 0x03F9, 0x105D, 0x271C, 0x7B1A, 0xA78D,
0x001F, 0xF282, 0x0269, 0xFE4F, 0x0062, 0xFFE7, 0xFFFF, 0x0006, 0x004A,
0x0030, 0x0377, 0x048B, 0x1004, 0x2A1F, 0x7C3D, 0xAA7B, 0x01D8, 0xF30B,
0x029E, 0xFE6F, 0x0063, 0xFFE9, 0xFFFF, 0x0006, 0x004A, 0x0030, 0x0377,
0x048B, 0x1004, 0x2A1F, 0x7C3D, 0xAA7B, 0x01D8, 0xF30B, 0x029E, 0xFE6F,
0x0063, 0xFFE9, 0xFFFF, 0x0007, 0x004D, 0x0043, 0x0382, 0x0520, 0x0F97,
0x2D2C, 0x7D3A, 0xAD75, 0x037A, 0xF399, 0x02CE, 0xFE8E, 0x0064, 0xFFEB,
0x0000, 0x0007, 0x004D, 0x0043, 0x0382, 0x0520, 0x0F97, 0x2D2C, 0x7D3A,
0xAD75, 0x037A, 0xF399, 0x02CE, 0xFE8E, 0x0064, 0xFFEB, 0x0000, 0x0007,
0x0050, 0x0056, 0x038A, 0x05B7, 0x0F14, 0x3041, 0x7E12, 0xB07C, 0x0502,
0xF42C, 0x02F7, 0xFEAC, 0x0064, 0xFFEC, 0x0000, 0x0007, 0x0050, 0x0056,
0x038A, 0x05B7, 0x0F14, 0x3041, 0x7E12, 0xB07C, 0x0502, 0xF42C, 0x02F7,
0xFEAC, 0x0064, 0xFFEC, 0x0000, 0x0008, 0x0053, 0x006B, 0x038E, 0x0652,
0x0E7C, 0x335D, 0x7EC2, 0xB38C, 0x0671, 0xF4C3, 0x031C, 0xFECA, 0x0063,
0xFFEE, 0x0000, 0x0008, 0x0053, 0x006B, 0x038E, 0x0652, 0x0E7C, 0x335D,
0x7EC2, 0xB38C, 0x0671, 0xF4C3, 0x031C, 0xFECA, 0x0063, 0xFFEE, 0x0000,
0x0009, 0x0056, 0x0080, 0x038F, 0x06EE, 0x0DCE, 0x367E, 0x7F4D, 0xB6A4,
0x07C8, 0xF55C, 0x033B, 0xFEE6, 0x0062, 0xFFEF, 0x0000, 0x0009, 0x0056,
0x0080, 0x038F, 0x06EE, 0x0DCE, 0x367E, 0x7F4D, 0xB6A4, 0x07C8, 0xF55C,
0x033B, 0xFEE6, 0x0062, 0xFFEF, 0x0000, 0x000A, 0x0058, 0x0098, 0x038C,
0x078C, 0x0D08, 0x39A4, 0x7FB0, 0xB9C4, 0x0905, 0xF5F9, 0x0354, 0xFF02,
0x0061, 0xFFF1, 0x0000, 0x000A, 0x0058, 0x0098, 0x038C, 0x078C, 0x0D08,
0x39A4, 0x7FB0, 0xB9C4, 0x0905, 0xF5F9, 0x0354, 0xFF02, 0x0061, 0xFFF1,
0x0000, 0x000B, 0x005B, 0x00AF, 0x0385, 0x082B, 0x0C2B, 0x3CCB, 0x7FEB,
0xBCE7, 0x0A2A, 0xF697, 0x0369, 0xFF1D, 0x005F, 0xFFF2, 0x0000, 0x000B,
0x005B, 0x00AF, 0x0385, 0x082B, 0x0C2B, 0x3CCB, 0x7FEB, 0xBCE7, 0x0A2A,
0xF697, 0x0369, 0xFF1D, 0x005F, 0xFFF2, 0x0000, 0x000D, 0x005D, 0x00C8,
0x037A, 0x08CA, 0x0B37, 0x3FF2, 0x7FFF, 0xC00E, 0x0B37, 0xF736, 0x037A,
0xFF38, 0x005D, 0xFFF3, 0x0000, 0x000D, 0x005D, 0x00C8, 0x037A, 0x08CA,
0x0B37, 0x3FF2, 0x7FFF, 0xC00E, 0x0B37, 0xF736, 0x037A, 0xFF38, 0x005D,
0xFFF3, 0x0000, 0x0000};
void CMP3Decode::MP3AB0() {
#ifdef DEBUG_AUDIO
DBGConsole_Msg(0, "MP3AB0");
#endif
// Part 2 - 100% Accurate
std::array<const u16, 8> LUT2 = {0xFEC4, 0xF4FA, 0xC5E4, 0xE1C4, 0x1916, 0x4A50, 0xA268, 0x78AE};
std::array<const u16, 4> LUT3 = {0xFB14, 0xD4DC, 0x31F2, 0x8E3A};
int i;
for (i = 0; i < 8; i++) {
v[16 + i] = v[0 + i] + v[8 + i];
v[24 + i] = ((v[0 + i] - v[8 + i]) * LUT2[i]) >> 0x10;
}
// Part 3: 4-wide butterflies
for (i = 0; i < 4; i++) {
v[0 + i] = v[16 + i] + v[20 + i];
v[4 + i] = ((v[16 + i] - v[20 + i]) * LUT3[i]) >> 0x10;
v[8 + i] = v[24 + i] + v[28 + i];
v[12 + i] = ((v[24 + i] - v[28 + i]) * LUT3[i]) >> 0x10;
}
// Part 4: 2-wide butterflies - 100% Accurate
for (i = 0; i < 16; i += 4) {
v[16 + i] = v[0 + i] + v[2 + i];
v[18 + i] = ((v[0 + i] - v[2 + i]) * 0xEC84) >> 0x10;
v[17 + i] = v[1 + i] + v[3 + i];
v[19 + i] = ((v[1 + i] - v[3 + i]) * 0x61F8) >> 0x10;
}
}
void CMP3Decode::InnerLoop() {
// Part 1: 100% Accurate
int i;
v[0] = *(s16 *)(mp3data + inPtr + (0x00 ^ 2));
v[31] = *(s16 *)(mp3data + inPtr + (0x3E ^ 2));
v[0] += v[31];
v[1] = *(s16 *)(mp3data + inPtr + (0x02 ^ 2));
v[30] = *(s16 *)(mp3data + inPtr + (0x3C ^ 2));
v[1] += v[30];
v[2] = *(s16 *)(mp3data + inPtr + (0x06 ^ 2));
v[28] = *(s16 *)(mp3data + inPtr + (0x38 ^ 2));
v[2] += v[28];
v[3] = *(s16 *)(mp3data + inPtr + (0x04 ^ 2));
v[29] = *(s16 *)(mp3data + inPtr + (0x3A ^ 2));
v[3] += v[29];
v[4] = *(s16 *)(mp3data + inPtr + (0x0E ^ 2));
v[24] = *(s16 *)(mp3data + inPtr + (0x30 ^ 2));
v[4] += v[24];
v[5] = *(s16 *)(mp3data + inPtr + (0x0C ^ 2));
v[25] = *(s16 *)(mp3data + inPtr + (0x32 ^ 2));
v[5] += v[25];
v[6] = *(s16 *)(mp3data + inPtr + (0x08 ^ 2));
v[27] = *(s16 *)(mp3data + inPtr + (0x36 ^ 2));
v[6] += v[27];
v[7] = *(s16 *)(mp3data + inPtr + (0x0A ^ 2));
v[26] = *(s16 *)(mp3data + inPtr + (0x34 ^ 2));
v[7] += v[26];
v[8] = *(s16 *)(mp3data + inPtr + (0x1E ^ 2));
v[16] = *(s16 *)(mp3data + inPtr + (0x20 ^ 2));
v[8] += v[16];
v[9] = *(s16 *)(mp3data + inPtr + (0x1C ^ 2));
v[17] = *(s16 *)(mp3data + inPtr + (0x22 ^ 2));
v[9] += v[17];
v[10] = *(s16 *)(mp3data + inPtr + (0x18 ^ 2));
v[19] = *(s16 *)(mp3data + inPtr + (0x26 ^ 2));
v[10] += v[19];
v[11] = *(s16 *)(mp3data + inPtr + (0x1A ^ 2));
v[18] = *(s16 *)(mp3data + inPtr + (0x24 ^ 2));
v[11] += v[18];
v[12] = *(s16 *)(mp3data + inPtr + (0x10 ^ 2));
v[23] = *(s16 *)(mp3data + inPtr + (0x2E ^ 2));
v[12] += v[23];
v[13] = *(s16 *)(mp3data + inPtr + (0x12 ^ 2));
v[22] = *(s16 *)(mp3data + inPtr + (0x2C ^ 2));
v[13] += v[22];
v[14] = *(s16 *)(mp3data + inPtr + (0x16 ^ 2));
v[20] = *(s16 *)(mp3data + inPtr + (0x28 ^ 2));
v[14] += v[20];
v[15] = *(s16 *)(mp3data + inPtr + (0x14 ^ 2));
v[21] = *(s16 *)(mp3data + inPtr + (0x2A ^ 2));
v[15] += v[21];
// Part 2-4
MP3AB0();
// Part 5 - 1-Wide Butterflies - 100% Accurate but need SSVs!!!
u32 t0 = t6 + 0x100;
u32 t1 = t6 + 0x200;
u32 t2 = t5 + 0x100;
u32 t3 = t5 + 0x200;
/*RSP_GPR[0x8].W = t0;
RSP_GPR[0x9].W = t1;
RSP_GPR[0xA].W = t2;
RSP_GPR[0xB].W = t3;
RSP_Vect[0].DW[1] = 0xB504A57E00016A09;
RSP_Vect[0].DW[0] = 0x0002D4130005A827;
*/
// 0x13A8
v[1] = 0;
v[11] = ((v[16] - v[17]) * 0xB504) >> 0x10;
v[16] = -v[16] - v[17];
v[2] = v[18] + v[19];
// ** Store v[11] -> (T6 + 0)**
*(s16 *)(mp3data + ((t6 + (short)0x0))) = (short)v[11];
v[11] = -v[11];
// ** Store v[16] -> (T3 + 0)**
*(s16 *)(mp3data + ((t3 + (short)0x0))) = (short)v[16];
// ** Store v[11] -> (T5 + 0)**
*(s16 *)(mp3data + ((t5 + (short)0x0))) = (short)v[11];
// 0x13E8 - Verified....
v[2] = -v[2];
// ** Store v[2] -> (T2 + 0)**
*(s16 *)(mp3data + ((t2 + (short)0x0))) = (short)v[2];
v[3] = (((v[18] - v[19]) * 0x16A09) >> 0x10) + v[2];
// ** Store v[3] -> (T0 + 0)**
*(s16 *)(mp3data + ((t0 + (short)0x0))) = (short)v[3];
// 0x1400 - Verified
v[4] = -v[20] - v[21];
v[6] = v[22] + v[23];
v[5] = ((v[20] - v[21]) * 0x16A09) >> 0x10;
// ** Store v[4] -> (T3 + 0xFF80)
*(s16 *)(mp3data + ((t3 + (short)0xFF80))) = (short)v[4];
v[7] = ((v[22] - v[23]) * 0x2D413) >> 0x10;
v[5] = v[5] - v[4];
v[7] = v[7] - v[5];
v[6] = v[6] + v[6];
v[5] = v[5] - v[6];
v[4] = -v[4] - v[6];
// *** Store v[7] -> (T1 + 0xFF80)
*(s16 *)(mp3data + ((t1 + (short)0xFF80))) = (short)v[7];
// *** Store v[4] -> (T2 + 0xFF80)
*(s16 *)(mp3data + ((t2 + (short)0xFF80))) = (short)v[4];
// *** Store v[5] -> (T0 + 0xFF80)
*(s16 *)(mp3data + ((t0 + (short)0xFF80))) = (short)v[5];
v[8] = v[24] + v[25];
v[9] = ((v[24] - v[25]) * 0x16A09) >> 0x10;
v[2] = v[8] + v[9];
v[11] = ((v[26] - v[27]) * 0x2D413) >> 0x10;
v[13] = ((v[28] - v[29]) * 0x2D413) >> 0x10;
v[10] = v[26] + v[27];
v[10] = v[10] + v[10];
v[12] = v[28] + v[29];
v[12] = v[12] + v[12];
v[14] = v[30] + v[31];
v[3] = v[8] + v[10];
v[14] = v[14] + v[14];
v[13] = (v[13] - v[2]) + v[12];
v[15] = (((v[30] - v[31]) * 0x5A827) >> 0x10) - (v[11] + v[2]);
v[14] = -(v[14] + v[14]) + v[3];
v[17] = v[13] - v[10];
v[9] = v[9] + v[14];
// ** Store v[9] -> (T6 + 0x40)
*(s16 *)(mp3data + ((t6 + (short)0x40))) = (short)v[9];
v[11] = v[11] - v[13];
// ** Store v[17] -> (T0 + 0xFFC0)
*(s16 *)(mp3data + ((t0 + (short)0xFFC0))) = (short)v[17];
v[12] = v[8] - v[12];
// ** Store v[11] -> (T0 + 0x40)
*(s16 *)(mp3data + ((t0 + (short)0x40))) = (short)v[11];
v[8] = -v[8];
// ** Store v[15] -> (T1 + 0xFFC0)
*(s16 *)(mp3data + ((t1 + (short)0xFFC0))) = (short)v[15];
v[10] = -v[10] - v[12];
// ** Store v[12] -> (T2 + 0x40)
*(s16 *)(mp3data + ((t2 + (short)0x40))) = (short)v[12];
// ** Store v[8] -> (T3 + 0xFFC0)
*(s16 *)(mp3data + ((t3 + (short)0xFFC0))) = (short)v[8];
// ** Store v[14] -> (T5 + 0x40)
*(s16 *)(mp3data + ((t5 + (short)0x40))) = (short)v[14];
// ** Store v[10] -> (T2 + 0xFFC0)
*(s16 *)(mp3data + ((t2 + (short)0xFFC0))) = (short)v[10];
// 0x14FC - Verified...
// Part 6 - 100% Accurate
v[0] = *(s16 *)(mp3data + inPtr + (0x00 ^ 2));
v[31] = *(s16 *)(mp3data + inPtr + (0x3E ^ 2));
v[0] -= v[31];
v[1] = *(s16 *)(mp3data + inPtr + (0x02 ^ 2));
v[30] = *(s16 *)(mp3data + inPtr + (0x3C ^ 2));
v[1] -= v[30];
v[2] = *(s16 *)(mp3data + inPtr + (0x06 ^ 2));
v[28] = *(s16 *)(mp3data + inPtr + (0x38 ^ 2));
v[2] -= v[28];
v[3] = *(s16 *)(mp3data + inPtr + (0x04 ^ 2));
v[29] = *(s16 *)(mp3data + inPtr + (0x3A ^ 2));
v[3] -= v[29];
v[4] = *(s16 *)(mp3data + inPtr + (0x0E ^ 2));
v[24] = *(s16 *)(mp3data + inPtr + (0x30 ^ 2));
v[4] -= v[24];
v[5] = *(s16 *)(mp3data + inPtr + (0x0C ^ 2));
v[25] = *(s16 *)(mp3data + inPtr + (0x32 ^ 2));
v[5] -= v[25];
v[6] = *(s16 *)(mp3data + inPtr + (0x08 ^ 2));
v[27] = *(s16 *)(mp3data + inPtr + (0x36 ^ 2));
v[6] -= v[27];
v[7] = *(s16 *)(mp3data + inPtr + (0x0A ^ 2));
v[26] = *(s16 *)(mp3data + inPtr + (0x34 ^ 2));
v[7] -= v[26];
v[8] = *(s16 *)(mp3data + inPtr + (0x1E ^ 2));
v[16] = *(s16 *)(mp3data + inPtr + (0x20 ^ 2));
v[8] -= v[16];
v[9] = *(s16 *)(mp3data + inPtr + (0x1C ^ 2));
v[17] = *(s16 *)(mp3data + inPtr + (0x22 ^ 2));
v[9] -= v[17];
v[10] = *(s16 *)(mp3data + inPtr + (0x18 ^ 2));
v[19] = *(s16 *)(mp3data + inPtr + (0x26 ^ 2));
v[10] -= v[19];
v[11] = *(s16 *)(mp3data + inPtr + (0x1A ^ 2));
v[18] = *(s16 *)(mp3data + inPtr + (0x24 ^ 2));
v[11] -= v[18];
v[12] = *(s16 *)(mp3data + inPtr + (0x10 ^ 2));
v[23] = *(s16 *)(mp3data + inPtr + (0x2E ^ 2));
v[12] -= v[23];
v[13] = *(s16 *)(mp3data + inPtr + (0x12 ^ 2));
v[22] = *(s16 *)(mp3data + inPtr + (0x2C ^ 2));
v[13] -= v[22];
v[14] = *(s16 *)(mp3data + inPtr + (0x16 ^ 2));
v[20] = *(s16 *)(mp3data + inPtr + (0x28 ^ 2));
v[14] -= v[20];
v[15] = *(s16 *)(mp3data + inPtr + (0x14 ^ 2));
v[21] = *(s16 *)(mp3data + inPtr + (0x2A ^ 2));
v[15] -= v[21];
// 0, 1, 3, 2, 7, 6, 4, 5, 7, 6, 4, 5, 0, 1, 3, 2
const u16 LUT6[16] = {0xFFB2, 0xFD3A, 0xF10A, 0xF854, 0xBDAE, 0xCDA0,
0xE76C, 0xDB94, 0x1920, 0x4B20, 0xAC7C, 0x7C68,
0xABEC, 0x9880, 0xDAE8, 0x839C};
for (i = 0; i < 16; i++) {
v[0 + i] = (v[0 + i] * LUT6[i]) >> 0x10;
}
v[0] = v[0] + v[0];
v[1] = v[1] + v[1];
v[2] = v[2] + v[2];
v[3] = v[3] + v[3];
v[4] = v[4] + v[4];
v[5] = v[5] + v[5];
v[6] = v[6] + v[6];
v[7] = v[7] + v[7];
v[12] = v[12] + v[12];
v[13] = v[13] + v[13];
v[15] = v[15] + v[15];
MP3AB0();
// Part 7: - 100% Accurate + SSV - Unoptimized
v[0] = (v[17] + v[16]) >> 1;
v[1] = ((v[17] * (int)((short)0xA57E * 2)) + (v[16] * 0xB504)) >> 0x10;
v[2] = -v[18] - v[19];
v[3] = ((v[18] - v[19]) * 0x16A09) >> 0x10;
v[4] = v[20] + v[21] + v[0];
v[5] = (((v[20] - v[21]) * 0x16A09) >> 0x10) + v[1];
v[6] = (((v[22] + v[23]) << 1) + v[0]) - v[2];
v[7] = (((v[22] - v[23]) * 0x2D413) >> 0x10) + v[0] + v[1] + v[3];
// 0x16A8
// Save v[0] -> (T3 + 0xFFE0)
*(s16 *)(mp3data + ((t3 + (short)0xFFE0))) = (short)-v[0];
v[8] = v[24] + v[25];
v[9] = ((v[24] - v[25]) * 0x16A09) >> 0x10;
v[10] = ((v[26] + v[27]) << 1) + v[8];
v[11] = (((v[26] - v[27]) * 0x2D413) >> 0x10) + v[8] + v[9];
v[12] = v[4] - ((v[28] + v[29]) << 1);
// ** Store v12 -> (T2 + 0x20)
*(s16 *)(mp3data + ((t2 + (short)0x20))) = (short)v[12];
v[13] = (((v[28] - v[29]) * 0x2D413) >> 0x10) - v[12] - v[5];
v[14] = v[30] + v[31];
v[14] = v[14] + v[14];
v[14] = v[14] + v[14];
v[14] = v[6] - v[14];
v[15] = (((v[30] - v[31]) * 0x5A827) >> 0x10) - v[7];
// Store v14 -> (T5 + 0x20)
*(s16 *)(mp3data + ((t5 + (short)0x20))) = (short)v[14];
v[14] = v[14] + v[1];
// Store v[14] -> (T6 + 0x20)
*(s16 *)(mp3data + ((t6 + (short)0x20))) = (short)v[14];
// Store v[15] -> (T1 + 0xFFE0)
*(s16 *)(mp3data + ((t1 + (short)0xFFE0))) = (short)v[15];
v[9] = v[9] + v[10];
v[1] = v[1] + v[6];
v[6] = v[10] - v[6];
v[1] = v[9] - v[1];
// Store v[6] -> (T5 + 0x60)
*(s16 *)(mp3data + ((t5 + (short)0x60))) = (short)v[6];
v[10] = v[10] + v[2];
v[10] = v[4] - v[10];
// Store v[10] -> (T2 + 0xFFA0)
*(s16 *)(mp3data + ((t2 + (short)0xFFA0))) = (short)v[10];
v[12] = v[2] - v[12];
// Store v[12] -> (T2 + 0xFFE0)
*(s16 *)(mp3data + ((t2 + (short)0xFFE0))) = (short)v[12];
v[5] = v[4] + v[5];
v[4] = v[8] - v[4];
// Store v[4] -> (T2 + 0x60)
*(s16 *)(mp3data + ((t2 + (short)0x60))) = (short)v[4];
v[0] = v[0] - v[8];
// Store v[0] -> (T3 + 0xFFA0)
*(s16 *)(mp3data + ((t3 + (short)0xFFA0))) = (short)v[0];
v[7] = v[7] - v[11];
// Store v[7] -> (T1 + 0xFFA0)
*(s16 *)(mp3data + ((t1 + (short)0xFFA0))) = (short)v[7];
v[11] = v[11] - v[3];
// Store v[1] -> (T6 + 0x60)
*(s16 *)(mp3data + ((t6 + (short)0x60))) = (short)v[1];
v[11] = v[11] - v[5];
// Store v[11] -> (T0 + 0x60)
*(s16 *)(mp3data + ((t0 + (short)0x60))) = (short)v[11];
v[3] = v[3] - v[13];
// Store v[3] -> (T0 + 0x20)
*(s16 *)(mp3data + ((t0 + (short)0x20))) = (short)v[3];
v[13] = v[13] + v[2];
// Store v[13] -> (T0 + 0xFFE0)
*(s16 *)(mp3data + ((t0 + (short)0xFFE0))) = (short)v[13];
// v[2] = ;
v[2] = (v[5] - v[2]) - v[9];
// Store v[2] -> (T0 + 0xFFA0)
*(s16 *)(mp3data + ((t0 + (short)0xFFA0))) = (short)v[2];
// 0x7A8 - Verified...
// Step 8 - Dewindowing
// u64 *DW = (u64 *)&DeWindowLUT[0x10-(t4>>1)];
u32 offset = 0x10 - (t4 >> 1);
u32 addptr = t6 & 0xFFE0;
s32 v2 = 0, v4 = 0, v6 = 0, v8 = 0;
for (int x = 0; x < 8; x++) {
v2 = v4 = v6 = v8 = 0;
// addptr = t1;
for (i = 7; i >= 0; i--) {
v2 += ((int)*(s16 *)(mp3data + (addptr) + 0x00) *
(short)DeWindowLUT[offset + 0x00] +
0x4000) >>
0xF;
v4 += ((int)*(s16 *)(mp3data + (addptr) + 0x10) *
(short)DeWindowLUT[offset + 0x08] +
0x4000) >>
0xF;
v6 += ((int)*(s16 *)(mp3data + (addptr) + 0x20) *
(short)DeWindowLUT[offset + 0x20] +
0x4000) >>
0xF;
v8 += ((int)*(s16 *)(mp3data + (addptr) + 0x30) *
(short)DeWindowLUT[offset + 0x28] +
0x4000) >>
0xF;
addptr += 2;
offset++;
}
s32 v0 = v2 + v4;
s32 v18 = v6 + v8;
// Clamp(v0);
// Clamp(v18);
// clamp???
// Don't think we need Saturate here //Salvy
*(s16 *)(mp3data + (outPtr ^ 2)) = Saturate<s16>(v0);
*(s16 *)(mp3data + ((outPtr + 2) ^ 2)) = Saturate<s16>(v18);
outPtr += 4;
addptr += 0x30;
offset += 0x38;
}
offset = 0x10 - (t4 >> 1) + 8 * 0x40;
v2 = v4 = 0;
for (i = 0; i < 4; i++) {
v2 += ((int)*(s16 *)(mp3data + (addptr) + 0x00) *
(short)DeWindowLUT[offset + 0x00] +
0x4000) >>
0xF;
v2 += ((int)*(s16 *)(mp3data + (addptr) + 0x10) *
(short)DeWindowLUT[offset + 0x08] +
0x4000) >>
0xF;
addptr += 2;
offset++;
v4 += ((int)*(s16 *)(mp3data + (addptr) + 0x00) *
(short)DeWindowLUT[offset + 0x00] +
0x4000) >>
0xF;
v4 += ((int)*(s16 *)(mp3data + (addptr) + 0x10) *
(short)DeWindowLUT[offset + 0x08] +
0x4000) >>
0xF;
addptr += 2;
offset++;
}
s32 mult6 = *(s32 *)(mp3data + 0xCE8);
s32 mult4 = *(s32 *)(mp3data + 0xCEC);
if (t4 & 0x2) {
v2 = (v2 * *(u32 *)(mp3data + 0xCE8)) >> 16;
*(s16 *)(mp3data + (outPtr ^ 2)) = v2;
} else {
v4 = (v4 * *(u32 *)(mp3data + 0xCE8)) >> 16;
*(s16 *)(mp3data + (outPtr ^ 2)) = v4;
mult4 = *(u32 *)(mp3data + 0xCE8);
}
addptr -= 0x50;
for (int x = 0; x < 8; x++) {
v2 = v4 = v6 = v8 = 0;
offset = (0x22F - (t4 >> 1) + x * 0x40);
for (i = 0; i < 4; i++) {
v2 += ((int)*(s16 *)(mp3data + (addptr) + 0x20) *
(short)DeWindowLUT[offset + 0x00] +
0x4000) >>
0xF;
v2 -= ((int)*(s16 *)(mp3data + ((addptr + 2)) + 0x20) *
(short)DeWindowLUT[offset + 0x01] +
0x4000) >>
0xF;
v4 += ((int)*(s16 *)(mp3data + (addptr) + 0x30) *
(short)DeWindowLUT[offset + 0x08] +
0x4000) >>
0xF;
v4 -= ((int)*(s16 *)(mp3data + ((addptr + 2)) + 0x30) *
(short)DeWindowLUT[offset + 0x09] +
0x4000) >>
0xF;
v6 += ((int)*(s16 *)(mp3data + (addptr) + 0x00) *
(short)DeWindowLUT[offset + 0x20] +
0x4000) >>
0xF;
v6 -= ((int)*(s16 *)(mp3data + ((addptr + 2)) + 0x00) *
(short)DeWindowLUT[offset + 0x21] +
0x4000) >>
0xF;
v8 += ((int)*(s16 *)(mp3data + (addptr) + 0x10) *
(short)DeWindowLUT[offset + 0x28] +
0x4000) >>
0xF;
v8 -= ((int)*(s16 *)(mp3data + ((addptr + 2)) + 0x10) *
(short)DeWindowLUT[offset + 0x29] +
0x4000) >>
0xF;
addptr += 4;
offset += 2;
}
s32 v0 = v2 + v4;
s32 v18 = v6 + v8;
// Clamp(v0);
// Clamp(v18);
// clamp???
// Don't think we need Saturate here //Salvy
*(s16 *)(mp3data + ((outPtr + 2) ^ 2)) = Saturate<s16>(v0);
*(s16 *)(mp3data + ((outPtr + 4) ^ 2)) = Saturate<s16>(v18);
outPtr += 4;
addptr -= 0x50;
}
int tmp = outPtr;
s32 hi0 = mult6;
s32 hi1 = mult4;
hi0 = (int)hi0 >> 0x10;
hi1 = (int)hi1 >> 0x10;
for (i = 0; i < 8; i++) {
*(s16 *)((u8 *)mp3data + ((tmp - 0x40) ^ 2)) =
Saturate<s16>((*(s16 *)(mp3data + ((tmp - 0x40) ^ 2)) * hi0));
*(s16 *)((u8 *)mp3data + ((tmp - 0x30) ^ 2)) =
Saturate<s16>((*(s16 *)(mp3data + ((tmp - 0x30) ^ 2)) * hi0));
*(s16 *)((u8 *)mp3data + ((tmp - 0x1E) ^ 2)) =
Saturate<s16>((*(s16 *)(mp3data + ((tmp - 0x1E) ^ 2)) * hi1));
*(s16 *)((u8 *)mp3data + ((tmp - 0x0E) ^ 2)) =
Saturate<s16>((*(s16 *)(mp3data + ((tmp - 0x0E) ^ 2)) * hi1));
tmp += 2;
}
}
void CMP3Decode::Decode(AudioHLECommand command) {
// Initialization Code
u32 readPtr; // s5
u32 writePtr; // s6
// const u32 Count = 0x0480; // s4
u32 tmp;
// u32 inPtr, outPtr;
t6 = 0x08A0; // I think these are temporary storage buffers
t5 = 0x0AC0;
t4 = (command.cmd0 & 0x1E);
writePtr = command.cmd1 & 0xFFFFFF;
readPtr = writePtr;
memmove(mp3data + 0xCE8, rdram + readPtr,
8); // Just do that for efficiency... may remove and use directly
// later anyway
readPtr += 8; // This must be a header byte or whatnot
for (u32 cnt = 0; cnt < 0x0480; cnt += 0x180) {
memmove(mp3data + 0xCF0, rdram + readPtr,
0x180); // DMA: 0xCF0 <- RDRAM[s5] : 0x180
inPtr = 0xCF0; // s7
outPtr = 0xE70; // s3
for (int cnt2 = 0; cnt2 < 0x180; cnt2 += 0x40) {
t6 &= 0xFFE0;
t5 &= 0xFFE0;
t6 |= t4;
t5 |= t4;
InnerLoop();
t4 = (t4 - 2) & 0x1E;
tmp = t6;
t6 = t5;
t5 = tmp;
// outPtr += 0x40;
inPtr += 0x40;
}
memmove(rdram + writePtr, mp3data + 0xe70, 0x180);
writePtr += 0x180;
readPtr += 0x180;
}
}
CMP3Decode gMP3Decode;
} // namespace
void MP3(AudioHLECommand command) {
#ifdef DEBUG_AUDIO
DBGConsole_Msg(0, "MP3 ");
#endif
gMP3Decode.Decode(command);
}
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