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gstreamer/gst/modplug/libmodplug/load_mod.cpp
Jeremy Simon ac87bfc370 adding modplug 
Original commit message from CVS:
adding modplug
2002-02-28 21:10:42 +00:00

498 lines
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/*
* This source code is public domain.
*
* Authors: Olivier Lapicque <olivierl@jps.net>,
* Adam Goode <adam@evdebs.org> (endian and char fixes for PPC)
*/
#include "stdafx.h"
#include "sndfile.h"
//#pragma warning(disable:4244)
extern WORD ProTrackerPeriodTable[6*12];
//////////////////////////////////////////////////////////
// ProTracker / NoiseTracker MOD/NST file support
void CSoundFile::ConvertModCommand(MODCOMMAND *m) const
//-----------------------------------------------------
{
UINT command = m->command, param = m->param;
switch(command)
{
case 0x00: if (param) command = CMD_ARPEGGIO; break;
case 0x01: command = CMD_PORTAMENTOUP; break;
case 0x02: command = CMD_PORTAMENTODOWN; break;
case 0x03: command = CMD_TONEPORTAMENTO; break;
case 0x04: command = CMD_VIBRATO; break;
case 0x05: command = CMD_TONEPORTAVOL; if (param & 0xF0) param &= 0xF0; break;
case 0x06: command = CMD_VIBRATOVOL; if (param & 0xF0) param &= 0xF0; break;
case 0x07: command = CMD_TREMOLO; break;
case 0x08: command = CMD_PANNING8; break;
case 0x09: command = CMD_OFFSET; break;
case 0x0A: command = CMD_VOLUMESLIDE; if (param & 0xF0) param &= 0xF0; break;
case 0x0B: command = CMD_POSITIONJUMP; break;
case 0x0C: command = CMD_VOLUME; break;
case 0x0D: command = CMD_PATTERNBREAK; param = ((param >> 4) * 10) + (param & 0x0F); break;
case 0x0E: command = CMD_MODCMDEX; break;
case 0x0F: command = (param <= (UINT)((m_nType & (MOD_TYPE_XM|MOD_TYPE_MT2)) ? 0x1F : 0x20)) ? CMD_SPEED : CMD_TEMPO;
if ((param == 0xFF) && (m_nSamples == 15)) command = 0; break;
// Extension for XM extended effects
case 'G' - 55: command = CMD_GLOBALVOLUME; break;
case 'H' - 55: command = CMD_GLOBALVOLSLIDE; if (param & 0xF0) param &= 0xF0; break;
case 'K' - 55: command = CMD_KEYOFF; break;
case 'L' - 55: command = CMD_SETENVPOSITION; break;
case 'M' - 55: command = CMD_CHANNELVOLUME; break;
case 'N' - 55: command = CMD_CHANNELVOLSLIDE; break;
case 'P' - 55: command = CMD_PANNINGSLIDE; if (param & 0xF0) param &= 0xF0; break;
case 'R' - 55: command = CMD_RETRIG; break;
case 'T' - 55: command = CMD_TREMOR; break;
case 'X' - 55: command = CMD_XFINEPORTAUPDOWN; break;
case 'Y' - 55: command = CMD_PANBRELLO; break;
case 'Z' - 55: command = CMD_MIDI; break;
default: command = 0;
}
m->command = command;
m->param = param;
}
WORD CSoundFile::ModSaveCommand(const MODCOMMAND *m, BOOL bXM) const
//------------------------------------------------------------------
{
UINT command = m->command & 0x3F, param = m->param;
switch(command)
{
case 0: command = param = 0; break;
case CMD_ARPEGGIO: command = 0; break;
case CMD_PORTAMENTOUP:
if (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT|MOD_TYPE_STM))
{
if ((param & 0xF0) == 0xE0) { command=0x0E; param=((param & 0x0F) >> 2)|0x10; break; }
else if ((param & 0xF0) == 0xF0) { command=0x0E; param &= 0x0F; param|=0x10; break; }
}
command = 0x01;
break;
case CMD_PORTAMENTODOWN:
if (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT|MOD_TYPE_STM))
{
if ((param & 0xF0) == 0xE0) { command=0x0E; param=((param & 0x0F) >> 2)|0x20; break; }
else if ((param & 0xF0) == 0xF0) { command=0x0E; param &= 0x0F; param|=0x20; break; }
}
command = 0x02;
break;
case CMD_TONEPORTAMENTO: command = 0x03; break;
case CMD_VIBRATO: command = 0x04; break;
case CMD_TONEPORTAVOL: command = 0x05; break;
case CMD_VIBRATOVOL: command = 0x06; break;
case CMD_TREMOLO: command = 0x07; break;
case CMD_PANNING8:
command = 0x08;
if (bXM)
{
if ((m_nType != MOD_TYPE_IT) && (m_nType != MOD_TYPE_XM) && (param <= 0x80))
{
param <<= 1;
if (param > 255) param = 255;
}
} else
{
if ((m_nType == MOD_TYPE_IT) || (m_nType == MOD_TYPE_XM)) param >>= 1;
}
break;
case CMD_OFFSET: command = 0x09; break;
case CMD_VOLUMESLIDE: command = 0x0A; break;
case CMD_POSITIONJUMP: command = 0x0B; break;
case CMD_VOLUME: command = 0x0C; break;
case CMD_PATTERNBREAK: command = 0x0D; param = ((param / 10) << 4) | (param % 10); break;
case CMD_MODCMDEX: command = 0x0E; break;
case CMD_SPEED: command = 0x0F; if (param > 0x20) param = 0x20; break;
case CMD_TEMPO: if (param > 0x20) { command = 0x0F; break; }
case CMD_GLOBALVOLUME: command = 'G' - 55; break;
case CMD_GLOBALVOLSLIDE: command = 'H' - 55; break;
case CMD_KEYOFF: command = 'K' - 55; break;
case CMD_SETENVPOSITION: command = 'L' - 55; break;
case CMD_CHANNELVOLUME: command = 'M' - 55; break;
case CMD_CHANNELVOLSLIDE: command = 'N' - 55; break;
case CMD_PANNINGSLIDE: command = 'P' - 55; break;
case CMD_RETRIG: command = 'R' - 55; break;
case CMD_TREMOR: command = 'T' - 55; break;
case CMD_XFINEPORTAUPDOWN: command = 'X' - 55; break;
case CMD_PANBRELLO: command = 'Y' - 55; break;
case CMD_MIDI: command = 'Z' - 55; break;
case CMD_S3MCMDEX:
switch(param & 0xF0)
{
case 0x10: command = 0x0E; param = (param & 0x0F) | 0x30; break;
case 0x20: command = 0x0E; param = (param & 0x0F) | 0x50; break;
case 0x30: command = 0x0E; param = (param & 0x0F) | 0x40; break;
case 0x40: command = 0x0E; param = (param & 0x0F) | 0x70; break;
case 0x90: command = 'X' - 55; break;
case 0xB0: command = 0x0E; param = (param & 0x0F) | 0x60; break;
case 0xA0:
case 0x50:
case 0x70:
case 0x60: command = param = 0; break;
default: command = 0x0E; break;
}
break;
default: command = param = 0;
}
return (WORD)((command << 8) | (param));
}
#pragma pack(1)
typedef struct _MODSAMPLE
{
CHAR name[22];
WORD length;
BYTE finetune;
BYTE volume;
WORD loopstart;
WORD looplen;
} MODSAMPLE, *PMODSAMPLE;
typedef struct _MODMAGIC
{
BYTE nOrders;
BYTE nRestartPos;
BYTE Orders[128];
char Magic[4]; // changed from CHAR
} MODMAGIC, *PMODMAGIC;
#pragma pack()
BOOL IsMagic(LPCSTR s1, LPCSTR s2)
{
return ((*(DWORD *)s1) == (*(DWORD *)s2)) ? TRUE : FALSE;
}
BOOL CSoundFile::ReadMod(const BYTE *lpStream, DWORD dwMemLength)
//---------------------------------------------------------------
{
char s[1024]; // changed from CHAR
DWORD dwMemPos, dwTotalSampleLen;
PMODMAGIC pMagic;
UINT nErr;
if ((!lpStream) || (dwMemLength < 0x600)) return FALSE;
dwMemPos = 20;
m_nSamples = 31;
m_nChannels = 4;
pMagic = (PMODMAGIC)(lpStream+dwMemPos+sizeof(MODSAMPLE)*31);
// Check Mod Magic
memcpy(s, pMagic->Magic, 4);
if ((IsMagic(s, "M.K.")) || (IsMagic(s, "M!K!"))
|| (IsMagic(s, "M&K!")) || (IsMagic(s, "N.T."))) m_nChannels = 4; else
if ((IsMagic(s, "CD81")) || (IsMagic(s, "OKTA"))) m_nChannels = 8; else
if ((s[0]=='F') && (s[1]=='L') && (s[2]=='T') && (s[3]>='4') && (s[3]<='9')) m_nChannels = s[3] - '0'; else
if ((s[0]>='4') && (s[0]<='9') && (s[1]=='C') && (s[2]=='H') && (s[3]=='N')) m_nChannels = s[0] - '0'; else
if ((s[0]=='1') && (s[1]>='0') && (s[1]<='9') && (s[2]=='C') && (s[3]=='H')) m_nChannels = s[1] - '0' + 10; else
if ((s[0]=='2') && (s[1]>='0') && (s[1]<='9') && (s[2]=='C') && (s[3]=='H')) m_nChannels = s[1] - '0' + 20; else
if ((s[0]=='3') && (s[1]>='0') && (s[1]<='2') && (s[2]=='C') && (s[3]=='H')) m_nChannels = s[1] - '0' + 30; else
if ((s[0]=='T') && (s[1]=='D') && (s[2]=='Z') && (s[3]>='4') && (s[3]<='9')) m_nChannels = s[3] - '0'; else
if (IsMagic(s,"16CN")) m_nChannels = 16; else
if (IsMagic(s,"32CN")) m_nChannels = 32; else m_nSamples = 15;
// Load Samples
nErr = 0;
dwTotalSampleLen = 0;
for (UINT i=1; i<=m_nSamples; i++)
{
PMODSAMPLE pms = (PMODSAMPLE)(lpStream+dwMemPos);
MODINSTRUMENT *psmp = &Ins[i];
UINT loopstart, looplen;
memcpy(m_szNames[i], pms->name, 22);
m_szNames[i][22] = 0;
psmp->uFlags = 0;
psmp->nLength = bswapBE16(pms->length)*2;
dwTotalSampleLen += psmp->nLength;
psmp->nFineTune = MOD2XMFineTune(pms->finetune & 0x0F);
psmp->nVolume = 4*pms->volume;
if (psmp->nVolume > 256) { psmp->nVolume = 256; nErr++; }
psmp->nGlobalVol = 64;
psmp->nPan = 128;
loopstart = bswapBE16(pms->loopstart)*2;
looplen = bswapBE16(pms->looplen)*2;
// Fix loops
if ((looplen > 2) && (loopstart+looplen > psmp->nLength)
&& (loopstart/2+looplen <= psmp->nLength))
{
loopstart /= 2;
}
psmp->nLoopStart = loopstart;
psmp->nLoopEnd = loopstart + looplen;
if (psmp->nLength < 4) psmp->nLength = 0;
if (psmp->nLength)
{
UINT derr = 0;
if (psmp->nLoopStart >= psmp->nLength) { psmp->nLoopStart = psmp->nLength-1; derr|=1; }
if (psmp->nLoopEnd > psmp->nLength) { psmp->nLoopEnd = psmp->nLength; derr |= 1; }
if (psmp->nLoopStart > psmp->nLoopEnd) derr |= 1;
if ((psmp->nLoopStart > psmp->nLoopEnd) || (psmp->nLoopEnd <= 8)
|| (psmp->nLoopEnd - psmp->nLoopStart <= 4))
{
psmp->nLoopStart = 0;
psmp->nLoopEnd = 0;
}
if (psmp->nLoopEnd > psmp->nLoopStart)
{
psmp->uFlags |= CHN_LOOP;
}
}
dwMemPos += sizeof(MODSAMPLE);
}
if ((m_nSamples == 15) && (dwTotalSampleLen > dwMemLength * 4)) return FALSE;
pMagic = (PMODMAGIC)(lpStream+dwMemPos);
dwMemPos += sizeof(MODMAGIC);
if (m_nSamples == 15) dwMemPos -= 4;
memset(Order, 0,sizeof(Order));
memcpy(Order, pMagic->Orders, 128);
UINT nbp, nbpbuggy, nbpbuggy2, norders;
norders = pMagic->nOrders;
if ((!norders) || (norders > 0x80))
{
norders = 0x80;
while ((norders > 1) && (!Order[norders-1])) norders--;
}
nbpbuggy = 0;
nbpbuggy2 = 0;
nbp = 0;
for (UINT iord=0; iord<128; iord++)
{
UINT i = Order[iord];
if ((i < 0x80) && (nbp <= i))
{
nbp = i+1;
if (iord<norders) nbpbuggy = nbp;
}
if (i >= nbpbuggy2) nbpbuggy2 = i+1;
}
for (UINT iend=norders; iend<MAX_ORDERS; iend++) Order[iend] = 0xFF;
norders--;
m_nRestartPos = pMagic->nRestartPos;
if (m_nRestartPos >= 0x78) m_nRestartPos = 0;
if (m_nRestartPos + 1 >= (UINT)norders) m_nRestartPos = 0;
if (!nbp) return FALSE;
DWORD dwWowTest = dwTotalSampleLen+dwMemPos;
if ((IsMagic(pMagic->Magic, "M.K.")) && (dwWowTest + nbp*8*256 == dwMemLength)) m_nChannels = 8;
if ((nbp != nbpbuggy) && (dwWowTest + nbp*m_nChannels*256 != dwMemLength))
{
if (dwWowTest + nbpbuggy*m_nChannels*256 == dwMemLength) nbp = nbpbuggy;
else nErr += 8;
} else
if ((nbpbuggy2 > nbp) && (dwWowTest + nbpbuggy2*m_nChannels*256 == dwMemLength))
{
nbp = nbpbuggy2;
}
if ((dwWowTest < 0x600) || (dwWowTest > dwMemLength)) nErr += 8;
if ((m_nSamples == 15) && (nErr >= 16)) return FALSE;
// Default settings
m_nType = MOD_TYPE_MOD;
m_nDefaultSpeed = 6;
m_nDefaultTempo = 125;
m_nMinPeriod = 14 << 2;
m_nMaxPeriod = 3424 << 2;
memcpy(m_szNames, lpStream, 20);
// Setting channels pan
for (UINT ich=0; ich<m_nChannels; ich++)
{
ChnSettings[ich].nVolume = 64;
if (gdwSoundSetup & SNDMIX_MAXDEFAULTPAN)
ChnSettings[ich].nPan = (((ich&3)==1) || ((ich&3)==2)) ? 256 : 0;
else
ChnSettings[ich].nPan = (((ich&3)==1) || ((ich&3)==2)) ? 0xC0 : 0x40;
}
// Reading channels
for (UINT ipat=0; ipat<nbp; ipat++)
{
if (ipat < MAX_PATTERNS)
{
if ((Patterns[ipat] = AllocatePattern(64, m_nChannels)) == NULL) break;
PatternSize[ipat] = 64;
if (dwMemPos + m_nChannels*256 >= dwMemLength) break;
MODCOMMAND *m = Patterns[ipat];
LPCBYTE p = lpStream + dwMemPos;
for (UINT j=m_nChannels*64; j; m++,p+=4,j--)
{
BYTE A0=p[0], A1=p[1], A2=p[2], A3=p[3];
UINT n = ((((UINT)A0 & 0x0F) << 8) | (A1));
if ((n) && (n != 0xFFF)) m->note = GetNoteFromPeriod(n << 2);
m->instr = ((UINT)A2 >> 4) | (A0 & 0x10);
m->command = A2 & 0x0F;
m->param = A3;
if ((m->command) || (m->param)) ConvertModCommand(m);
}
}
dwMemPos += m_nChannels*256;
}
// Reading instruments
DWORD dwErrCheck = 0;
for (UINT ismp=1; ismp<=m_nSamples; ismp++) if (Ins[ismp].nLength)
{
LPSTR p = (LPSTR)(lpStream+dwMemPos);
UINT flags = 0;
if (dwMemPos + 5 >= dwMemLength) break;
if (!strnicmp(p, "ADPCM", 5))
{
flags = 3;
p += 5;
dwMemPos += 5;
}
DWORD dwSize = ReadSample(&Ins[ismp], flags, p, dwMemLength - dwMemPos);
if (dwSize)
{
dwMemPos += dwSize;
dwErrCheck++;
}
}
#ifdef MODPLUG_TRACKER
return TRUE;
#else
return (dwErrCheck) ? TRUE : FALSE;
#endif
}
#ifndef MODPLUG_NO_FILESAVE
#pragma warning(disable:4100)
BOOL CSoundFile::SaveMod(LPCSTR lpszFileName, UINT nPacking)
//----------------------------------------------------------
{
BYTE insmap[32];
UINT inslen[32];
BYTE bTab[32];
BYTE ord[128];
FILE *f;
if ((!m_nChannels) || (!lpszFileName)) return FALSE;
if ((f = fopen(lpszFileName, "wb")) == NULL) return FALSE;
memset(ord, 0, sizeof(ord));
memset(inslen, 0, sizeof(inslen));
if (m_nInstruments)
{
memset(insmap, 0, sizeof(insmap));
for (UINT i=1; i<32; i++) if (Headers[i])
{
for (UINT j=0; j<128; j++) if (Headers[i]->Keyboard[j])
{
insmap[i] = Headers[i]->Keyboard[j];
break;
}
}
} else
{
for (UINT i=0; i<32; i++) insmap[i] = (BYTE)i;
}
// Writing song name
fwrite(m_szNames, 20, 1, f);
// Writing instrument definition
for (UINT iins=1; iins<=31; iins++)
{
MODINSTRUMENT *pins = &Ins[insmap[iins]];
memcpy(bTab, m_szNames[iins],22);
inslen[iins] = pins->nLength;
if (inslen[iins] > 0x1fff0) inslen[iins] = 0x1fff0;
bTab[22] = inslen[iins] >> 9;
bTab[23] = inslen[iins] >> 1;
if (pins->RelativeTone < 0) bTab[24] = 0x08; else
if (pins->RelativeTone > 0) bTab[24] = 0x07; else
bTab[24] = (BYTE)XM2MODFineTune(pins->nFineTune);
bTab[25] = pins->nVolume >> 2;
bTab[26] = pins->nLoopStart >> 9;
bTab[27] = pins->nLoopStart >> 1;
bTab[28] = (pins->nLoopEnd - pins->nLoopStart) >> 9;
bTab[29] = (pins->nLoopEnd - pins->nLoopStart) >> 1;
fwrite(bTab, 30, 1, f);
}
// Writing number of patterns
UINT nbp=0, norders=128;
for (UINT iord=0; iord<128; iord++)
{
if (Order[iord] == 0xFF)
{
norders = iord;
break;
}
if ((Order[iord] < 0x80) && (nbp<=Order[iord])) nbp = Order[iord]+1;
}
bTab[0] = norders;
bTab[1] = m_nRestartPos;
fwrite(bTab, 2, 1, f);
// Writing pattern list
if (norders) memcpy(ord, Order, norders);
fwrite(ord, 128, 1, f);
// Writing signature
if (m_nChannels == 4)
lstrcpy((LPSTR)&bTab, "M.K.");
else
wsprintf((LPSTR)&bTab, "%luCHN", m_nChannels);
fwrite(bTab, 4, 1, f);
// Writing patterns
for (UINT ipat=0; ipat<nbp; ipat++) if (Patterns[ipat])
{
BYTE s[64*4];
MODCOMMAND *m = Patterns[ipat];
for (UINT i=0; i<64; i++) if (i < PatternSize[ipat])
{
LPBYTE p=s;
for (UINT c=0; c<m_nChannels; c++,p+=4,m++)
{
UINT param = ModSaveCommand(m, FALSE);
UINT command = param >> 8;
param &= 0xFF;
if (command > 0x0F) command = param = 0;
if ((m->vol >= 0x10) && (m->vol <= 0x50) && (!command) && (!param)) { command = 0x0C; param = m->vol - 0x10; }
UINT period = m->note;
if (period)
{
if (period < 37) period = 37;
period -= 37;
if (period >= 6*12) period = 6*12-1;
period = ProTrackerPeriodTable[period];
}
UINT instr = (m->instr > 31) ? 0 : m->instr;
p[0] = ((period >> 8) & 0x0F) | (instr & 0x10);
p[1] = period & 0xFF;
p[2] = ((instr & 0x0F) << 4) | (command & 0x0F);
p[3] = param;
}
fwrite(s, m_nChannels, 4, f);
} else
{
memset(s, 0, m_nChannels*4);
fwrite(s, m_nChannels, 4, f);
}
}
// Writing instruments
for (UINT ismpd=1; ismpd<=31; ismpd++) if (inslen[ismpd])
{
MODINSTRUMENT *pins = &Ins[insmap[ismpd]];
UINT flags = RS_PCM8S;
#ifndef NO_PACKING
if (!(pins->uFlags & (CHN_16BIT|CHN_STEREO)))
{
if ((nPacking) && (CanPackSample(pins->pSample, inslen[ismpd], nPacking)))
{
fwrite("ADPCM", 1, 5, f);
flags = RS_ADPCM4;
}
}
#endif
WriteSample(f, pins, flags, inslen[ismpd]);
}
fclose(f);
return TRUE;
}
#pragma warning(default:4100)
#endif // MODPLUG_NO_FILESAVE
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