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gstreamer/gst/modplug/libmodplug/load_it.cpp

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adding modplug Original commit message from CVS: adding modplug
2002-02-28 21:10:42 +00:00
/*
* 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"
#include "it_defs.h"
#ifdef MSC_VER
#pragma warning(disable:4244)
#endif
BYTE autovibit2xm[8] =
{ 0, 3, 1, 4, 2, 0, 0, 0 };
BYTE autovibxm2it[8] =
{ 0, 2, 4, 1, 3, 0, 0, 0 };
//////////////////////////////////////////////////////////
// Impulse Tracker IT file support (import only)
static inline UINT ConvertVolParam(UINT value)
//--------------------------------------------
{
return (value > 9) ? 9 : value;
}
BOOL CSoundFile::ITInstrToMPT(const void *p, INSTRUMENTHEADER *penv, UINT trkvers)
//--------------------------------------------------------------------------------
{
if (trkvers < 0x0200)
{
const ITOLDINSTRUMENT *pis = (const ITOLDINSTRUMENT *)p;
memcpy(penv->name, pis->name, 26);
memcpy(penv->filename, pis->filename, 12);
penv->nFadeOut = bswapLE16(pis->fadeout) << 6;
penv->nGlobalVol = 64;
for (UINT j=0; j<120; j++)
{
UINT note = pis->keyboard[j*2];
UINT ins = pis->keyboard[j*2+1];
if (ins < MAX_SAMPLES) penv->Keyboard[j] = ins;
if (note < 128) penv->NoteMap[j] = note+1;
else if (note >= 0xFE) penv->NoteMap[j] = note;
}
if (pis->flags & 0x01) penv->dwFlags |= ENV_VOLUME;
if (pis->flags & 0x02) penv->dwFlags |= ENV_VOLLOOP;
if (pis->flags & 0x04) penv->dwFlags |= ENV_VOLSUSTAIN;
penv->nVolLoopStart = pis->vls;
penv->nVolLoopEnd = pis->vle;
penv->nVolSustainBegin = pis->sls;
penv->nVolSustainEnd = pis->sle;
penv->nVolEnv = 25;
for (UINT ev=0; ev<25; ev++)
{
if ((penv->VolPoints[ev] = pis->nodes[ev*2]) == 0xFF)
{
penv->nVolEnv = ev;
break;
}
penv->VolEnv[ev] = pis->nodes[ev*2+1];
}
penv->nNNA = pis->nna;
penv->nDCT = pis->dnc;
penv->nPan = 0x80;
} else
{
const ITINSTRUMENT *pis = (const ITINSTRUMENT *)p;
memcpy(penv->name, pis->name, 26);
memcpy(penv->filename, pis->filename, 12);
penv->nMidiProgram = pis->mpr;
penv->nMidiChannel = pis->mch;
penv->wMidiBank = bswapLE16(pis->mbank);
penv->nFadeOut = bswapLE16(pis->fadeout) << 5;
penv->nGlobalVol = pis->gbv >> 1;
if (penv->nGlobalVol > 64) penv->nGlobalVol = 64;
for (UINT j=0; j<120; j++)
{
UINT note = pis->keyboard[j*2];
UINT ins = pis->keyboard[j*2+1];
if (ins < MAX_SAMPLES) penv->Keyboard[j] = ins;
if (note < 128) penv->NoteMap[j] = note+1;
else if (note >= 0xFE) penv->NoteMap[j] = note;
}
// Volume Envelope
if (pis->volenv.flags & 1) penv->dwFlags |= ENV_VOLUME;
if (pis->volenv.flags & 2) penv->dwFlags |= ENV_VOLLOOP;
if (pis->volenv.flags & 4) penv->dwFlags |= ENV_VOLSUSTAIN;
if (pis->volenv.flags & 8) penv->dwFlags |= ENV_VOLCARRY;
penv->nVolEnv = pis->volenv.num;
if (penv->nVolEnv > 25) penv->nVolEnv = 25;
penv->nVolLoopStart = pis->volenv.lpb;
penv->nVolLoopEnd = pis->volenv.lpe;
penv->nVolSustainBegin = pis->volenv.slb;
penv->nVolSustainEnd = pis->volenv.sle;
// Panning Envelope
if (pis->panenv.flags & 1) penv->dwFlags |= ENV_PANNING;
if (pis->panenv.flags & 2) penv->dwFlags |= ENV_PANLOOP;
if (pis->panenv.flags & 4) penv->dwFlags |= ENV_PANSUSTAIN;
if (pis->panenv.flags & 8) penv->dwFlags |= ENV_PANCARRY;
penv->nPanEnv = pis->panenv.num;
if (penv->nPanEnv > 25) penv->nPanEnv = 25;
penv->nPanLoopStart = pis->panenv.lpb;
penv->nPanLoopEnd = pis->panenv.lpe;
penv->nPanSustainBegin = pis->panenv.slb;
penv->nPanSustainEnd = pis->panenv.sle;
// Pitch Envelope
if (pis->pitchenv.flags & 1) penv->dwFlags |= ENV_PITCH;
if (pis->pitchenv.flags & 2) penv->dwFlags |= ENV_PITCHLOOP;
if (pis->pitchenv.flags & 4) penv->dwFlags |= ENV_PITCHSUSTAIN;
if (pis->pitchenv.flags & 8) penv->dwFlags |= ENV_PITCHCARRY;
if (pis->pitchenv.flags & 0x80) penv->dwFlags |= ENV_FILTER;
penv->nPitchEnv = pis->pitchenv.num;
if (penv->nPitchEnv > 25) penv->nPitchEnv = 25;
penv->nPitchLoopStart = pis->pitchenv.lpb;
penv->nPitchLoopEnd = pis->pitchenv.lpe;
penv->nPitchSustainBegin = pis->pitchenv.slb;
penv->nPitchSustainEnd = pis->pitchenv.sle;
// Envelopes Data
for (UINT ev=0; ev<25; ev++)
{
penv->VolEnv[ev] = pis->volenv.data[ev*3];
penv->VolPoints[ev] = (pis->volenv.data[ev*3+2] << 8) | (pis->volenv.data[ev*3+1]);
penv->PanEnv[ev] = pis->panenv.data[ev*3] + 32;
penv->PanPoints[ev] = (pis->panenv.data[ev*3+2] << 8) | (pis->panenv.data[ev*3+1]);
penv->PitchEnv[ev] = pis->pitchenv.data[ev*3] + 32;
penv->PitchPoints[ev] = (pis->pitchenv.data[ev*3+2] << 8) | (pis->pitchenv.data[ev*3+1]);
}
penv->nNNA = pis->nna;
penv->nDCT = pis->dct;
penv->nDNA = pis->dca;
penv->nPPS = pis->pps;
penv->nPPC = pis->ppc;
penv->nIFC = pis->ifc;
penv->nIFR = pis->ifr;
penv->nVolSwing = pis->rv;
penv->nPanSwing = pis->rp;
penv->nPan = (pis->dfp & 0x7F) << 2;
if (penv->nPan > 256) penv->nPan = 128;
if (pis->dfp < 0x80) penv->dwFlags |= ENV_SETPANNING;
}
if ((penv->nVolLoopStart >= 25) || (penv->nVolLoopEnd >= 25)) penv->dwFlags &= ~ENV_VOLLOOP;
if ((penv->nVolSustainBegin >= 25) || (penv->nVolSustainEnd >= 25)) penv->dwFlags &= ~ENV_VOLSUSTAIN;
return TRUE;
}
BOOL CSoundFile::ReadIT(const BYTE *lpStream, DWORD dwMemLength)
//--------------------------------------------------------------
{
ITFILEHEADER pifh = *(ITFILEHEADER *)lpStream;
DWORD dwMemPos = sizeof(ITFILEHEADER);
DWORD inspos[MAX_INSTRUMENTS];
DWORD smppos[MAX_SAMPLES];
DWORD patpos[MAX_PATTERNS];
BYTE chnmask[64], channels_used[64];
MODCOMMAND lastvalue[64];
pifh.id = bswapLE32(pifh.id);
pifh.reserved1 = bswapLE16(pifh.reserved1);
pifh.ordnum = bswapLE16(pifh.ordnum);
pifh.insnum = bswapLE16(pifh.insnum);
pifh.smpnum = bswapLE16(pifh.smpnum);
pifh.patnum = bswapLE16(pifh.patnum);
pifh.cwtv = bswapLE16(pifh.cwtv);
pifh.cmwt = bswapLE16(pifh.cmwt);
pifh.flags = bswapLE16(pifh.flags);
pifh.special = bswapLE16(pifh.special);
pifh.msglength = bswapLE16(pifh.msglength);
pifh.msgoffset = bswapLE32(pifh.msgoffset);
pifh.reserved2 = bswapLE32(pifh.reserved2);
if ((!lpStream) || (dwMemLength < 0x100)) return FALSE;
if ((pifh.id != 0x4D504D49) || (pifh.insnum >= MAX_INSTRUMENTS)
|| (!pifh.smpnum) || (pifh.smpnum >= MAX_INSTRUMENTS) || (!pifh.ordnum)) return FALSE;
if (dwMemPos + pifh.ordnum + pifh.insnum*4
+ pifh.smpnum*4 + pifh.patnum*4 > dwMemLength) return FALSE;
m_nType = MOD_TYPE_IT;
if (pifh.flags & 0x08) m_dwSongFlags |= SONG_LINEARSLIDES;
if (pifh.flags & 0x10) m_dwSongFlags |= SONG_ITOLDEFFECTS;
if (pifh.flags & 0x20) m_dwSongFlags |= SONG_ITCOMPATMODE;
if (pifh.flags & 0x80) m_dwSongFlags |= SONG_EMBEDMIDICFG;
if (pifh.flags & 0x1000) m_dwSongFlags |= SONG_EXFILTERRANGE;
memcpy(m_szNames[0], pifh.songname, 26);
m_szNames[0][26] = 0;
// Global Volume
if (pifh.globalvol)
{
m_nDefaultGlobalVolume = pifh.globalvol << 1;
if (!m_nDefaultGlobalVolume) m_nDefaultGlobalVolume = 256;
if (m_nDefaultGlobalVolume > 256) m_nDefaultGlobalVolume = 256;
}
if (pifh.speed) m_nDefaultSpeed = pifh.speed;
if (pifh.tempo) m_nDefaultTempo = pifh.tempo;
m_nSongPreAmp = pifh.mv & 0x7F;
// Reading Channels Pan Positions
for (int ipan=0; ipan<64; ipan++) if (pifh.chnpan[ipan] != 0xFF)
{
ChnSettings[ipan].nVolume = pifh.chnvol[ipan];
ChnSettings[ipan].nPan = 128;
if (pifh.chnpan[ipan] & 0x80) ChnSettings[ipan].dwFlags |= CHN_MUTE;
UINT n = pifh.chnpan[ipan] & 0x7F;
if (n <= 64) ChnSettings[ipan].nPan = n << 2;
if (n == 100) ChnSettings[ipan].dwFlags |= CHN_SURROUND;
}
if (m_nChannels < 4) m_nChannels = 4;
// Reading Song Message
if ((pifh.special & 0x01) && (pifh.msglength) && (pifh.msgoffset + pifh.msglength < dwMemLength))
{
m_lpszSongComments = new char[pifh.msglength+1];
if (m_lpszSongComments)
{
memcpy(m_lpszSongComments, lpStream+pifh.msgoffset, pifh.msglength);
m_lpszSongComments[pifh.msglength] = 0;
}
}
// Reading orders
UINT nordsize = pifh.ordnum;
if (nordsize > MAX_ORDERS) nordsize = MAX_ORDERS;
memcpy(Order, lpStream+dwMemPos, nordsize);
dwMemPos += pifh.ordnum;
// Reading Instrument Offsets
memset(inspos, 0, sizeof(inspos));
UINT inspossize = pifh.insnum;
if (inspossize > MAX_INSTRUMENTS) inspossize = MAX_INSTRUMENTS;
inspossize <<= 2;
memcpy(inspos, lpStream+dwMemPos, inspossize);
for (UINT j=0; j < (inspossize>>2); j++)
{
inspos[j] = bswapLE32(inspos[j]);
}
dwMemPos += pifh.insnum * 4;
// Reading Samples Offsets
memset(smppos, 0, sizeof(smppos));
UINT smppossize = pifh.smpnum;
if (smppossize > MAX_SAMPLES) smppossize = MAX_SAMPLES;
smppossize <<= 2;
memcpy(smppos, lpStream+dwMemPos, smppossize);
for (UINT j=0; j < (smppossize>>2); j++)
{
smppos[j] = bswapLE32(smppos[j]);
}
dwMemPos += pifh.smpnum * 4;
// Reading Patterns Offsets
memset(patpos, 0, sizeof(patpos));
UINT patpossize = pifh.patnum;
if (patpossize > MAX_PATTERNS) patpossize = MAX_PATTERNS;
patpossize <<= 2;
memcpy(patpos, lpStream+dwMemPos, patpossize);
for (UINT j=0; j < (patpossize>>2); j++)
{
patpos[j] = bswapLE32(patpos[j]);
}
dwMemPos += pifh.patnum * 4;
// Reading IT Extra Info
if (dwMemPos + 2 < dwMemLength)
{
UINT nflt = bswapLE16(*((WORD *)(lpStream + dwMemPos)));
dwMemPos += 2;
if (dwMemPos + nflt * 8 < dwMemLength) dwMemPos += nflt * 8;
}
// Reading Midi Output & Macros
if (m_dwSongFlags & SONG_EMBEDMIDICFG)
{
if (dwMemPos + sizeof(MODMIDICFG) < dwMemLength)
{
memcpy(&m_MidiCfg, lpStream+dwMemPos, sizeof(MODMIDICFG));
dwMemPos += sizeof(MODMIDICFG);
}
}
// Read pattern names: "PNAM"
if ((dwMemPos + 8 < dwMemLength) && (bswapLE32(*((DWORD *)(lpStream+dwMemPos))) == 0x4d414e50))
{
UINT len = bswapLE32(*((DWORD *)(lpStream+dwMemPos+4)));
dwMemPos += 8;
if ((dwMemPos + len <= dwMemLength) && (len <= MAX_PATTERNS*MAX_PATTERNNAME) && (len >= MAX_PATTERNNAME))
{
m_lpszPatternNames = new char[len];
if (m_lpszPatternNames)
{
m_nPatternNames = len / MAX_PATTERNNAME;
memcpy(m_lpszPatternNames, lpStream+dwMemPos, len);
}
dwMemPos += len;
}
}
// 4-channels minimum
m_nChannels = 4;
// Read channel names: "CNAM"
if ((dwMemPos + 8 < dwMemLength) && (bswapLE32(*((DWORD *)(lpStream+dwMemPos))) == 0x4d414e43))
{
UINT len = bswapLE32(*((DWORD *)(lpStream+dwMemPos+4)));
dwMemPos += 8;
if ((dwMemPos + len <= dwMemLength) && (len <= 64*MAX_CHANNELNAME))
{
UINT n = len / MAX_CHANNELNAME;
if (n > m_nChannels) m_nChannels = n;
for (UINT i=0; i<n; i++)
{
memcpy(ChnSettings[i].szName, (lpStream+dwMemPos+i*MAX_CHANNELNAME), MAX_CHANNELNAME);
ChnSettings[i].szName[MAX_CHANNELNAME-1] = 0;
}
dwMemPos += len;
}
}
// Read mix plugins information
if (dwMemPos + 8 < dwMemLength)
{
dwMemPos += LoadMixPlugins(lpStream+dwMemPos, dwMemLength-dwMemPos);
}
// Checking for unused channels
UINT npatterns = pifh.patnum;
if (npatterns > MAX_PATTERNS) npatterns = MAX_PATTERNS;
for (UINT patchk=0; patchk<npatterns; patchk++)
{
memset(chnmask, 0, sizeof(chnmask));
if ((!patpos[patchk]) || ((DWORD)patpos[patchk] + 4 >= dwMemLength)) continue;
UINT len = bswapLE16(*((WORD *)(lpStream+patpos[patchk])));
UINT rows = bswapLE16(*((WORD *)(lpStream+patpos[patchk]+2)));
if ((rows < 4) || (rows > 256)) continue;
if (patpos[patchk]+8+len > dwMemLength) continue;
UINT i = 0;
const BYTE *p = lpStream+patpos[patchk]+8;
UINT nrow = 0;
while (nrow<rows)
{
if (i >= len) break;
BYTE b = p[i++];
if (!b)
{
nrow++;
continue;
}
UINT ch = b & 0x7F;
if (ch) ch = (ch - 1) & 0x3F;
if (b & 0x80)
{
if (i >= len) break;
chnmask[ch] = p[i++];
}
// Channel used
if (chnmask[ch] & 0x0F)
{
if ((ch >= m_nChannels) && (ch < 64)) m_nChannels = ch+1;
}
// Note
if (chnmask[ch] & 1) i++;
// Instrument
if (chnmask[ch] & 2) i++;
// Volume
if (chnmask[ch] & 4) i++;
// Effect
if (chnmask[ch] & 8) i += 2;
if (i >= len) break;
}
}
// Reading Instruments
m_nInstruments = 0;
if (pifh.flags & 0x04) m_nInstruments = pifh.insnum;
if (m_nInstruments >= MAX_INSTRUMENTS) m_nInstruments = MAX_INSTRUMENTS-1;
for (UINT nins=0; nins<m_nInstruments; nins++)
{
if ((inspos[nins] > 0) && (inspos[nins] < dwMemLength - sizeof(ITOLDINSTRUMENT)))
{
INSTRUMENTHEADER *penv = new INSTRUMENTHEADER;
if (!penv) continue;
Headers[nins+1] = penv;
memset(penv, 0, sizeof(INSTRUMENTHEADER));
ITInstrToMPT(lpStream + inspos[nins], penv, pifh.cmwt);
}
}
// Reading Samples
m_nSamples = pifh.smpnum;
if (m_nSamples >= MAX_SAMPLES) m_nSamples = MAX_SAMPLES-1;
for (UINT nsmp=0; nsmp<pifh.smpnum; nsmp++) if ((smppos[nsmp]) && (smppos[nsmp] + sizeof(ITSAMPLESTRUCT) <= dwMemLength))
{
ITSAMPLESTRUCT pis = *(ITSAMPLESTRUCT *)(lpStream+smppos[nsmp]);
pis.id = bswapLE32(pis.id);
pis.length = bswapLE32(pis.length);
pis.loopbegin = bswapLE32(pis.loopbegin);
pis.loopend = bswapLE32(pis.loopend);
pis.C5Speed = bswapLE32(pis.C5Speed);
pis.susloopbegin = bswapLE32(pis.susloopbegin);
pis.susloopend = bswapLE32(pis.susloopend);
pis.samplepointer = bswapLE32(pis.samplepointer);
if (pis.id == 0x53504D49)
{
MODINSTRUMENT *pins = &Ins[nsmp+1];
memcpy(pins->name, pis.filename, 12);
pins->uFlags = 0;
pins->nLength = 0;
pins->nLoopStart = pis.loopbegin;
pins->nLoopEnd = pis.loopend;
pins->nSustainStart = pis.susloopbegin;
pins->nSustainEnd = pis.susloopend;
pins->nC4Speed = pis.C5Speed;
if (!pins->nC4Speed) pins->nC4Speed = 8363;
if (pis.C5Speed < 256) pins->nC4Speed = 256;
pins->nVolume = pis.vol << 2;
if (pins->nVolume > 256) pins->nVolume = 256;
pins->nGlobalVol = pis.gvl;
if (pins->nGlobalVol > 64) pins->nGlobalVol = 64;
if (pis.flags & 0x10) pins->uFlags |= CHN_LOOP;
if (pis.flags & 0x20) pins->uFlags |= CHN_SUSTAINLOOP;
if (pis.flags & 0x40) pins->uFlags |= CHN_PINGPONGLOOP;
if (pis.flags & 0x80) pins->uFlags |= CHN_PINGPONGSUSTAIN;
pins->nPan = (pis.dfp & 0x7F) << 2;
if (pins->nPan > 256) pins->nPan = 256;
if (pis.dfp & 0x80) pins->uFlags |= CHN_PANNING;
pins->nVibType = autovibit2xm[pis.vit & 7];
pins->nVibRate = pis.vis;
pins->nVibDepth = pis.vid & 0x7F;
pins->nVibSweep = (pis.vir + 3) / 4;
if ((pis.samplepointer) && (pis.samplepointer < dwMemLength) && (pis.length))
{
pins->nLength = pis.length;
if (pins->nLength > MAX_SAMPLE_LENGTH) pins->nLength = MAX_SAMPLE_LENGTH;
UINT flags = (pis.cvt & 1) ? RS_PCM8S : RS_PCM8U;
if (pis.flags & 2)
{
flags += 5;
if (pis.flags & 4) flags |= RSF_STEREO;
pins->uFlags |= CHN_16BIT;
// IT 2.14 16-bit packed sample ?
if (pis.flags & 8) flags = ((pifh.cmwt >= 0x215) && (pis.cvt & 4)) ? RS_IT21516 : RS_IT21416;
} else
{
if (pis.flags & 4) flags |= RSF_STEREO;
if (pis.cvt == 0xFF) flags = RS_ADPCM4; else
// IT 2.14 8-bit packed sample ?
if (pis.flags & 8) flags = ((pifh.cmwt >= 0x215) && (pis.cvt & 4)) ? RS_IT2158 : RS_IT2148;
}
ReadSample(&Ins[nsmp+1], flags, (LPSTR)(lpStream+pis.samplepointer), dwMemLength - pis.samplepointer);
}
}
memcpy(m_szNames[nsmp+1], pis.name, 26);
}
// Reading Patterns
for (UINT npat=0; npat<npatterns; npat++)
{
if ((!patpos[npat]) || ((DWORD)patpos[npat] + 4 >= dwMemLength))
{
PatternSize[npat] = 64;
Patterns[npat] = AllocatePattern(64, m_nChannels);
continue;
}
UINT len = bswapLE16(*((WORD *)(lpStream+patpos[npat])));
UINT rows = bswapLE16(*((WORD *)(lpStream+patpos[npat]+2)));
if ((rows < 4) || (rows > 256)) continue;
if (patpos[npat]+8+len > dwMemLength) continue;
PatternSize[npat] = rows;
if ((Patterns[npat] = AllocatePattern(rows, m_nChannels)) == NULL) continue;
memset(lastvalue, 0, sizeof(lastvalue));
memset(chnmask, 0, sizeof(chnmask));
MODCOMMAND *m = Patterns[npat];
UINT i = 0;
const BYTE *p = lpStream+patpos[npat]+8;
UINT nrow = 0;
while (nrow<rows)
{
if (i >= len) break;
BYTE b = p[i++];
if (!b)
{
nrow++;
m+=m_nChannels;
continue;
}
UINT ch = b & 0x7F;
if (ch) ch = (ch - 1) & 0x3F;
if (b & 0x80)
{
if (i >= len) break;
chnmask[ch] = p[i++];
}
if ((chnmask[ch] & 0x10) && (ch < m_nChannels))
{
m[ch].note = lastvalue[ch].note;
}
if ((chnmask[ch] & 0x20) && (ch < m_nChannels))
{
m[ch].instr = lastvalue[ch].instr;
}
if ((chnmask[ch] & 0x40) && (ch < m_nChannels))
{
m[ch].volcmd = lastvalue[ch].volcmd;
m[ch].vol = lastvalue[ch].vol;
}
if ((chnmask[ch] & 0x80) && (ch < m_nChannels))
{
m[ch].command = lastvalue[ch].command;
m[ch].param = lastvalue[ch].param;
}
if (chnmask[ch] & 1) // Note
{
if (i >= len) break;
UINT note = p[i++];
if (ch < m_nChannels)
{
if (note < 0x80) note++;
m[ch].note = note;
lastvalue[ch].note = note;
channels_used[ch] = TRUE;
}
}
if (chnmask[ch] & 2)
{
if (i >= len) break;
UINT instr = p[i++];
if (ch < m_nChannels)
{
m[ch].instr = instr;
lastvalue[ch].instr = instr;
}
}
if (chnmask[ch] & 4)
{
if (i >= len) break;
UINT vol = p[i++];
if (ch < m_nChannels)
{
// 0-64: Set Volume
if (vol <= 64) { m[ch].volcmd = VOLCMD_VOLUME; m[ch].vol = vol; } else
// 128-192: Set Panning
if ((vol >= 128) && (vol <= 192)) { m[ch].volcmd = VOLCMD_PANNING; m[ch].vol = vol - 128; } else
// 65-74: Fine Volume Up
if (vol < 75) { m[ch].volcmd = VOLCMD_FINEVOLUP; m[ch].vol = vol - 65; } else
// 75-84: Fine Volume Down
if (vol < 85) { m[ch].volcmd = VOLCMD_FINEVOLDOWN; m[ch].vol = vol - 75; } else
// 85-94: Volume Slide Up
if (vol < 95) { m[ch].volcmd = VOLCMD_VOLSLIDEUP; m[ch].vol = vol - 85; } else
// 95-104: Volume Slide Down
if (vol < 105) { m[ch].volcmd = VOLCMD_VOLSLIDEDOWN; m[ch].vol = vol - 95; } else
// 105-114: Pitch Slide Up
if (vol < 115) { m[ch].volcmd = VOLCMD_PORTADOWN; m[ch].vol = vol - 105; } else
// 115-124: Pitch Slide Down
if (vol < 125) { m[ch].volcmd = VOLCMD_PORTAUP; m[ch].vol = vol - 115; } else
// 193-202: Portamento To
if ((vol >= 193) && (vol <= 202)) { m[ch].volcmd = VOLCMD_TONEPORTAMENTO; m[ch].vol = vol - 193; } else
// 203-212: Vibrato
if ((vol >= 203) && (vol <= 212)) { m[ch].volcmd = VOLCMD_VIBRATOSPEED; m[ch].vol = vol - 203; }
lastvalue[ch].volcmd = m[ch].volcmd;
lastvalue[ch].vol = m[ch].vol;
}
}
// Reading command/param
if (chnmask[ch] & 8)
{
if (i > len - 2) break;
UINT cmd = p[i++];
UINT param = p[i++];
if (ch < m_nChannels)
{
if (cmd)
{
m[ch].command = cmd;
m[ch].param = param;
S3MConvert(&m[ch], TRUE);
lastvalue[ch].command = m[ch].command;
lastvalue[ch].param = m[ch].param;
}
}
}
}
}
for (UINT ncu=0; ncu<MAX_BASECHANNELS; ncu++)
{
if (ncu>=m_nChannels)
{
ChnSettings[ncu].nVolume = 64;
ChnSettings[ncu].dwFlags &= ~CHN_MUTE;
}
}
m_nMinPeriod = 8;
m_nMaxPeriod = 0xF000;
return TRUE;
}
#ifndef MODPLUG_NO_FILESAVE
//#define SAVEITTIMESTAMP
#pragma warning(disable:4100)
BOOL CSoundFile::SaveIT(LPCSTR lpszFileName, UINT nPacking)
//---------------------------------------------------------
{
DWORD dwPatNamLen, dwChnNamLen;
ITFILEHEADER header;
ITINSTRUMENT iti;
ITSAMPLESTRUCT itss;
BYTE smpcount[MAX_SAMPLES];
DWORD inspos[MAX_INSTRUMENTS];
DWORD patpos[MAX_PATTERNS];
DWORD smppos[MAX_SAMPLES];
DWORD dwPos = 0, dwHdrPos = 0, dwExtra = 2;
WORD patinfo[4];
BYTE chnmask[64];
BYTE buf[512];
MODCOMMAND lastvalue[64];
FILE *f;
if ((!lpszFileName) || ((f = fopen(lpszFileName, "wb")) == NULL)) return FALSE;
memset(inspos, 0, sizeof(inspos));
memset(patpos, 0, sizeof(patpos));
memset(smppos, 0, sizeof(smppos));
// Writing Header
memset(&header, 0, sizeof(header));
dwPatNamLen = 0;
dwChnNamLen = 0;
header.id = 0x4D504D49;
lstrcpyn(header.songname, m_szNames[0], 27);
header.reserved1 = 0x1004;
header.ordnum = 0;
while ((header.ordnum < MAX_ORDERS) && (Order[header.ordnum] < 0xFF)) header.ordnum++;
if (header.ordnum < MAX_ORDERS) Order[header.ordnum++] = 0xFF;
header.insnum = m_nInstruments;
header.smpnum = m_nSamples;
header.patnum = MAX_PATTERNS;
while ((header.patnum > 0) && (!Patterns[header.patnum-1])) header.patnum--;
header.cwtv = 0x217;
header.cmwt = 0x200;
header.flags = 0x0001;
header.special = 0x0006;
if (m_nInstruments) header.flags |= 0x04;
if (m_dwSongFlags & SONG_LINEARSLIDES) header.flags |= 0x08;
if (m_dwSongFlags & SONG_ITOLDEFFECTS) header.flags |= 0x10;
if (m_dwSongFlags & SONG_ITCOMPATMODE) header.flags |= 0x20;
if (m_dwSongFlags & SONG_EXFILTERRANGE) header.flags |= 0x1000;
header.globalvol = m_nDefaultGlobalVolume >> 1;
header.mv = m_nSongPreAmp;
if (header.mv < 0x20) header.mv = 0x20;
if (header.mv > 0x7F) header.mv = 0x7F;
header.speed = m_nDefaultSpeed;
header.tempo = m_nDefaultTempo;
header.sep = 128;
dwHdrPos = sizeof(header) + header.ordnum;
// Channel Pan and Volume
memset(header.chnpan, 0xFF, 64);
memset(header.chnvol, 64, 64);
for (UINT ich=0; ich<m_nChannels; ich++)
{
header.chnpan[ich] = ChnSettings[ich].nPan >> 2;
if (ChnSettings[ich].dwFlags & CHN_SURROUND) header.chnpan[ich] = 100;
header.chnvol[ich] = ChnSettings[ich].nVolume;
if (ChnSettings[ich].dwFlags & CHN_MUTE) header.chnpan[ich] |= 0x80;
if (ChnSettings[ich].szName[0])
{
dwChnNamLen = (ich+1) * MAX_CHANNELNAME;
}
}
if (dwChnNamLen) dwExtra += dwChnNamLen + 8;
#ifdef SAVEITTIMESTAMP
dwExtra += 8; // Time Stamp
#endif
if (m_dwSongFlags & SONG_EMBEDMIDICFG)
{
header.flags |= 0x80;
header.special |= 0x08;
dwExtra += sizeof(MODMIDICFG);
}
// Pattern Names
if ((m_nPatternNames) && (m_lpszPatternNames))
{
dwPatNamLen = m_nPatternNames * MAX_PATTERNNAME;
while ((dwPatNamLen >= MAX_PATTERNNAME) && (!m_lpszPatternNames[dwPatNamLen-MAX_PATTERNNAME])) dwPatNamLen -= MAX_PATTERNNAME;
if (dwPatNamLen < MAX_PATTERNNAME) dwPatNamLen = 0;
if (dwPatNamLen) dwExtra += dwPatNamLen + 8;
}
// Mix Plugins
dwExtra += SaveMixPlugins(NULL, TRUE);
// Comments
if (m_lpszSongComments)
{
header.special |= 1;
header.msglength = strlen(m_lpszSongComments)+1;
header.msgoffset = dwHdrPos + dwExtra + header.insnum*4 + header.patnum*4 + header.smpnum*4;
}
// Write file header
fwrite(&header, 1, sizeof(header), f);
fwrite(Order, 1, header.ordnum, f);
if (header.insnum) fwrite(inspos, 4, header.insnum, f);
if (header.smpnum) fwrite(smppos, 4, header.smpnum, f);
if (header.patnum) fwrite(patpos, 4, header.patnum, f);
// Writing editor history information
{
#ifdef SAVEITTIMESTAMP
SYSTEMTIME systime;
FILETIME filetime;
WORD timestamp[4];
WORD nInfoEx = 1;
memset(timestamp, 0, sizeof(timestamp));
fwrite(&nInfoEx, 1, 2, f);
GetSystemTime(&systime);
SystemTimeToFileTime(&systime, &filetime);
FileTimeToDosDateTime(&filetime, &timestamp[0], &timestamp[1]);
fwrite(timestamp, 1, 8, f);
#else
WORD nInfoEx = 0;
fwrite(&nInfoEx, 1, 2, f);
#endif
}
// Writing midi cfg
if (header.flags & 0x80)
{
fwrite(&m_MidiCfg, 1, sizeof(MODMIDICFG), f);
}
// Writing pattern names
if (dwPatNamLen)
{
DWORD d = 0x4d414e50;
fwrite(&d, 1, 4, f);
fwrite(&dwPatNamLen, 1, 4, f);
fwrite(m_lpszPatternNames, 1, dwPatNamLen, f);
}
// Writing channel Names
if (dwChnNamLen)
{
DWORD d = 0x4d414e43;
fwrite(&d, 1, 4, f);
fwrite(&dwChnNamLen, 1, 4, f);
UINT nChnNames = dwChnNamLen / MAX_CHANNELNAME;
for (UINT inam=0; inam<nChnNames; inam++)
{
fwrite(ChnSettings[inam].szName, 1, MAX_CHANNELNAME, f);
}
}
// Writing mix plugins info
SaveMixPlugins(f, FALSE);
// Writing song message
dwPos = dwHdrPos + dwExtra + (header.insnum + header.smpnum + header.patnum) * 4;
if (header.special & 1)
{
dwPos += strlen(m_lpszSongComments) + 1;
fwrite(m_lpszSongComments, 1, strlen(m_lpszSongComments)+1, f);
}
// Writing instruments
for (UINT nins=1; nins<=header.insnum; nins++)
{
memset(&iti, 0, sizeof(iti));
iti.id = 0x49504D49; // "IMPI"
iti.trkvers = 0x211;
if (Headers[nins])
{
INSTRUMENTHEADER *penv = Headers[nins];
memset(smpcount, 0, sizeof(smpcount));
memcpy(iti.filename, penv->filename, 12);
memcpy(iti.name, penv->name, 26);
iti.mbank = penv->wMidiBank;
iti.mpr = penv->nMidiProgram;
iti.mch = penv->nMidiChannel;
iti.nna = penv->nNNA;
iti.dct = penv->nDCT;
iti.dca = penv->nDNA;
iti.fadeout = penv->nFadeOut >> 5;
iti.pps = penv->nPPS;
iti.ppc = penv->nPPC;
iti.gbv = (BYTE)(penv->nGlobalVol << 1);
iti.dfp = (BYTE)penv->nPan >> 2;
if (!(penv->dwFlags & ENV_SETPANNING)) iti.dfp |= 0x80;
iti.rv = penv->nVolSwing;
iti.rp = penv->nPanSwing;
iti.ifc = penv->nIFC;
iti.ifr = penv->nIFR;
iti.nos = 0;
for (UINT i=0; i<120; i++) if (penv->Keyboard[i] < MAX_SAMPLES)
{
UINT smp = penv->Keyboard[i];
if ((smp) && (!smpcount[smp]))
{
smpcount[smp] = 1;
iti.nos++;
}
iti.keyboard[i*2] = penv->NoteMap[i] - 1;
iti.keyboard[i*2+1] = smp;
}
// Writing Volume envelope
if (penv->dwFlags & ENV_VOLUME) iti.volenv.flags |= 0x01;
if (penv->dwFlags & ENV_VOLLOOP) iti.volenv.flags |= 0x02;
if (penv->dwFlags & ENV_VOLSUSTAIN) iti.volenv.flags |= 0x04;
if (penv->dwFlags & ENV_VOLCARRY) iti.volenv.flags |= 0x08;
iti.volenv.num = (BYTE)penv->nVolEnv;
iti.volenv.lpb = (BYTE)penv->nVolLoopStart;
iti.volenv.lpe = (BYTE)penv->nVolLoopEnd;
iti.volenv.slb = penv->nVolSustainBegin;
iti.volenv.sle = penv->nVolSustainEnd;
// Writing Panning envelope
if (penv->dwFlags & ENV_PANNING) iti.panenv.flags |= 0x01;
if (penv->dwFlags & ENV_PANLOOP) iti.panenv.flags |= 0x02;
if (penv->dwFlags & ENV_PANSUSTAIN) iti.panenv.flags |= 0x04;
if (penv->dwFlags & ENV_PANCARRY) iti.panenv.flags |= 0x08;
iti.panenv.num = (BYTE)penv->nPanEnv;
iti.panenv.lpb = (BYTE)penv->nPanLoopStart;
iti.panenv.lpe = (BYTE)penv->nPanLoopEnd;
iti.panenv.slb = penv->nPanSustainBegin;
iti.panenv.sle = penv->nPanSustainEnd;
// Writing Pitch Envelope
if (penv->dwFlags & ENV_PITCH) iti.pitchenv.flags |= 0x01;
if (penv->dwFlags & ENV_PITCHLOOP) iti.pitchenv.flags |= 0x02;
if (penv->dwFlags & ENV_PITCHSUSTAIN) iti.pitchenv.flags |= 0x04;
if (penv->dwFlags & ENV_PITCHCARRY) iti.pitchenv.flags |= 0x08;
if (penv->dwFlags & ENV_FILTER) iti.pitchenv.flags |= 0x80;
iti.pitchenv.num = (BYTE)penv->nPitchEnv;
iti.pitchenv.lpb = (BYTE)penv->nPitchLoopStart;
iti.pitchenv.lpe = (BYTE)penv->nPitchLoopEnd;
iti.pitchenv.slb = (BYTE)penv->nPitchSustainBegin;
iti.pitchenv.sle = (BYTE)penv->nPitchSustainEnd;
// Writing Envelopes data
for (UINT ev=0; ev<25; ev++)
{
iti.volenv.data[ev*3] = penv->VolEnv[ev];
iti.volenv.data[ev*3+1] = penv->VolPoints[ev] & 0xFF;
iti.volenv.data[ev*3+2] = penv->VolPoints[ev] >> 8;
iti.panenv.data[ev*3] = penv->PanEnv[ev] - 32;
iti.panenv.data[ev*3+1] = penv->PanPoints[ev] & 0xFF;
iti.panenv.data[ev*3+2] = penv->PanPoints[ev] >> 8;
iti.pitchenv.data[ev*3] = penv->PitchEnv[ev] - 32;
iti.pitchenv.data[ev*3+1] = penv->PitchPoints[ev] & 0xFF;
iti.pitchenv.data[ev*3+2] = penv->PitchPoints[ev] >> 8;
}
} else
// Save Empty Instrument
{
for (UINT i=0; i<120; i++) iti.keyboard[i*2] = i;
iti.ppc = 5*12;
iti.gbv = 128;
iti.dfp = 0x20;
iti.ifc = 0xFF;
}
if (!iti.nos) iti.trkvers = 0;
// Writing instrument
inspos[nins-1] = dwPos;
dwPos += sizeof(ITINSTRUMENT);
fwrite(&iti, 1, sizeof(ITINSTRUMENT), f);
}
// Writing sample headers
memset(&itss, 0, sizeof(itss));
for (UINT hsmp=0; hsmp<header.smpnum; hsmp++)
{
smppos[hsmp] = dwPos;
dwPos += sizeof(ITSAMPLESTRUCT);
fwrite(&itss, 1, sizeof(ITSAMPLESTRUCT), f);
}
// Writing Patterns
for (UINT npat=0; npat<header.patnum; npat++)
{
DWORD dwPatPos = dwPos;
UINT len;
if (!Patterns[npat]) continue;
patpos[npat] = dwPos;
patinfo[0] = 0;
patinfo[1] = PatternSize[npat];
patinfo[2] = 0;
patinfo[3] = 0;
// Check for empty pattern
if (PatternSize[npat] == 64)
{
MODCOMMAND *pzc = Patterns[npat];
UINT nz = PatternSize[npat] * m_nChannels;
for (UINT iz=0; iz<nz; iz++)
{
if ((pzc[iz].note) || (pzc[iz].instr)
|| (pzc[iz].volcmd) || (pzc[iz].command)) break;
}
if (iz == nz)
{
patpos[npat] = 0;
continue;
}
}
fwrite(patinfo, 8, 1, f);
dwPos += 8;
memset(chnmask, 0xFF, sizeof(chnmask));
memset(lastvalue, 0, sizeof(lastvalue));
MODCOMMAND *m = Patterns[npat];
for (UINT row=0; row<PatternSize[npat]; row++)
{
len = 0;
for (UINT ch=0; ch<m_nChannels; ch++, m++)
{
BYTE b = 0;
UINT command = m->command;
UINT param = m->param;
UINT vol = 0xFF;
UINT note = m->note;
if (note) b |= 1;
if ((note) && (note < 0xFE)) note--;
if (m->instr) b |= 2;
if (m->volcmd)
{
UINT volcmd = m->volcmd;
switch(volcmd)
{
case VOLCMD_VOLUME: vol = m->vol; if (vol > 64) vol = 64; break;
case VOLCMD_PANNING: vol = m->vol + 128; if (vol > 192) vol = 192; break;
case VOLCMD_VOLSLIDEUP: vol = 85 + ConvertVolParam(m->vol); break;
case VOLCMD_VOLSLIDEDOWN: vol = 95 + ConvertVolParam(m->vol); break;
case VOLCMD_FINEVOLUP: vol = 65 + ConvertVolParam(m->vol); break;
case VOLCMD_FINEVOLDOWN: vol = 75 + ConvertVolParam(m->vol); break;
case VOLCMD_VIBRATO: vol = 203; break;
case VOLCMD_VIBRATOSPEED: vol = 203 + ConvertVolParam(m->vol); break;
case VOLCMD_TONEPORTAMENTO: vol = 193 + ConvertVolParam(m->vol); break;
case VOLCMD_PORTADOWN: vol = 105 + ConvertVolParam(m->vol); break;
case VOLCMD_PORTAUP: vol = 115 + ConvertVolParam(m->vol); break;
default: vol = 0xFF;
}
}
if (vol != 0xFF) b |= 4;
if (command)
{
S3MSaveConvert(&command, &param, TRUE);
if (command) b |= 8;
}
// Packing information
if (b)
{
// Same note ?
if (b & 1)
{
if ((note == lastvalue[ch].note) && (lastvalue[ch].volcmd & 1))
{
b &= ~1;
b |= 0x10;
} else
{
lastvalue[ch].note = note;
lastvalue[ch].volcmd |= 1;
}
}
// Same instrument ?
if (b & 2)
{
if ((m->instr == lastvalue[ch].instr) && (lastvalue[ch].volcmd & 2))
{
b &= ~2;
b |= 0x20;
} else
{
lastvalue[ch].instr = m->instr;
lastvalue[ch].volcmd |= 2;
}
}
// Same volume column byte ?
if (b & 4)
{
if ((vol == lastvalue[ch].vol) && (lastvalue[ch].volcmd & 4))
{
b &= ~4;
b |= 0x40;
} else
{
lastvalue[ch].vol = vol;
lastvalue[ch].volcmd |= 4;
}
}
// Same command / param ?
if (b & 8)
{
if ((command == lastvalue[ch].command) && (param == lastvalue[ch].param) && (lastvalue[ch].volcmd & 8))
{
b &= ~8;
b |= 0x80;
} else
{
lastvalue[ch].command = command;
lastvalue[ch].param = param;
lastvalue[ch].volcmd |= 8;
}
}
if (b != chnmask[ch])
{
chnmask[ch] = b;
buf[len++] = (ch+1) | 0x80;
buf[len++] = b;
} else
{
buf[len++] = ch+1;
}
if (b & 1) buf[len++] = note;
if (b & 2) buf[len++] = m->instr;
if (b & 4) buf[len++] = vol;
if (b & 8)
{
buf[len++] = command;
buf[len++] = param;
}
}
}
buf[len++] = 0;
dwPos += len;
patinfo[0] += len;
fwrite(buf, 1, len, f);
}
fseek(f, dwPatPos, SEEK_SET);
fwrite(patinfo, 8, 1, f);
fseek(f, dwPos, SEEK_SET);
}
// Writing Sample Data
for (UINT nsmp=1; nsmp<=header.smpnum; nsmp++)
{
MODINSTRUMENT *psmp = &Ins[nsmp];
memset(&itss, 0, sizeof(itss));
memcpy(itss.filename, psmp->name, 12);
memcpy(itss.name, m_szNames[nsmp], 26);
itss.id = 0x53504D49;
itss.gvl = (BYTE)psmp->nGlobalVol;
if (m_nInstruments)
{
for (UINT iu=1; iu<=m_nInstruments; iu++) if (Headers[iu])
{
INSTRUMENTHEADER *penv = Headers[iu];
for (UINT ju=0; ju<128; ju++) if (penv->Keyboard[ju] == nsmp)
{
itss.flags = 0x01;
break;
}
}
} else
{
itss.flags = 0x01;
}
if (psmp->uFlags & CHN_LOOP) itss.flags |= 0x10;
if (psmp->uFlags & CHN_SUSTAINLOOP) itss.flags |= 0x20;
if (psmp->uFlags & CHN_PINGPONGLOOP) itss.flags |= 0x40;
if (psmp->uFlags & CHN_PINGPONGSUSTAIN) itss.flags |= 0x80;
itss.C5Speed = psmp->nC4Speed;
if (!itss.C5Speed) itss.C5Speed = 8363;
itss.length = psmp->nLength;
itss.loopbegin = psmp->nLoopStart;
itss.loopend = psmp->nLoopEnd;
itss.susloopbegin = psmp->nSustainStart;
itss.susloopend = psmp->nSustainEnd;
itss.vol = psmp->nVolume >> 2;
itss.dfp = psmp->nPan >> 2;
itss.vit = autovibxm2it[psmp->nVibType & 7];
itss.vis = psmp->nVibRate;
itss.vid = psmp->nVibDepth;
itss.vir = (psmp->nVibSweep < 64) ? psmp->nVibSweep * 4 : 255;
if (psmp->uFlags & CHN_PANNING) itss.dfp |= 0x80;
if ((psmp->pSample) && (psmp->nLength)) itss.cvt = 0x01;
UINT flags = RS_PCM8S;
#ifndef NO_PACKING
if (nPacking)
{
if ((!(psmp->uFlags & (CHN_16BIT|CHN_STEREO)))
&& (CanPackSample(psmp->pSample, psmp->nLength, nPacking)))
{
flags = RS_ADPCM4;
itss.cvt = 0xFF;
}
} else
#endif // NO_PACKING
{
if (psmp->uFlags & CHN_STEREO)
{
flags = RS_STPCM8S;
itss.flags |= 0x04;
}
if (psmp->uFlags & CHN_16BIT)
{
itss.flags |= 0x02;
flags = (psmp->uFlags & CHN_STEREO) ? RS_STPCM16S : RS_PCM16S;
}
}
itss.samplepointer = dwPos;
fseek(f, smppos[nsmp-1], SEEK_SET);
fwrite(&itss, 1, sizeof(ITSAMPLESTRUCT), f);
fseek(f, dwPos, SEEK_SET);
if ((psmp->pSample) && (psmp->nLength))
{
dwPos += WriteSample(f, psmp, flags);
}
}
// Updating offsets
fseek(f, dwHdrPos, SEEK_SET);
if (header.insnum) fwrite(inspos, 4, header.insnum, f);
if (header.smpnum) fwrite(smppos, 4, header.smpnum, f);
if (header.patnum) fwrite(patpos, 4, header.patnum, f);
fclose(f);
return TRUE;
}
#pragma warning(default:4100)
#endif // MODPLUG_NO_FILESAVE
//////////////////////////////////////////////////////////////////////////////
// IT 2.14 compression
DWORD ITReadBits(DWORD &bitbuf, UINT &bitnum, LPBYTE &ibuf, CHAR n)
//-----------------------------------------------------------------
{
DWORD retval = 0;
UINT i = n;
if (n > 0)
{
do
{
if (!bitnum)
{
bitbuf = *ibuf++;
bitnum = 8;
}
retval >>= 1;
retval |= bitbuf << 31;
bitbuf >>= 1;
bitnum--;
i--;
} while (i);
i = n;
}
return (retval >> (32-i));
}
#define IT215_SUPPORT
void ITUnpack8Bit(signed char *pSample, DWORD dwLen, LPBYTE lpMemFile, DWORD dwMemLength, BOOL b215)
//-------------------------------------------------------------------------------------------
{
signed char *pDst = pSample;
LPBYTE pSrc = lpMemFile;
DWORD wHdr = 0;
DWORD wCount = 0;
DWORD bitbuf = 0;
UINT bitnum = 0;
BYTE bLeft = 0, bTemp = 0, bTemp2 = 0;
while (dwLen)
{
if (!wCount)
{
wCount = 0x8000;
wHdr = bswapLE16(*((LPWORD)pSrc));
pSrc += 2;
bLeft = 9;
bTemp = bTemp2 = 0;
bitbuf = bitnum = 0;
}
DWORD d = wCount;
if (d > dwLen) d = dwLen;
// Unpacking
DWORD dwPos = 0;
do
{
WORD wBits = (WORD)ITReadBits(bitbuf, bitnum, pSrc, bLeft);
if (bLeft < 7)
{
DWORD i = 1 << (bLeft-1);
DWORD j = wBits & 0xFFFF;
if (i != j) goto UnpackByte;
wBits = (WORD)(ITReadBits(bitbuf, bitnum, pSrc, 3) + 1) & 0xFF;
bLeft = ((BYTE)wBits < bLeft) ? (BYTE)wBits : (BYTE)((wBits+1) & 0xFF);
goto Next;
}
if (bLeft < 9)
{
WORD i = (0xFF >> (9 - bLeft)) + 4;
WORD j = i - 8;
if ((wBits <= j) || (wBits > i)) goto UnpackByte;
wBits -= j;
bLeft = ((BYTE)(wBits & 0xFF) < bLeft) ? (BYTE)(wBits & 0xFF) : (BYTE)((wBits+1) & 0xFF);
goto Next;
}
if (bLeft >= 10) goto SkipByte;
if (wBits >= 256)
{
bLeft = (BYTE)(wBits + 1) & 0xFF;
goto Next;
}
UnpackByte:
if (bLeft < 8)
{
BYTE shift = 8 - bLeft;
signed char c = (signed char)(wBits << shift);
c >>= shift;
wBits = (WORD)c;
}
wBits += bTemp;
bTemp = (BYTE)wBits;
bTemp2 += bTemp;
#ifdef IT215_SUPPORT
pDst[dwPos] = (b215) ? bTemp2 : bTemp;
#else
pDst[dwPos] = bTemp;
#endif
SkipByte:
dwPos++;
Next:
if (pSrc >= lpMemFile+dwMemLength+1) return;
} while (dwPos < d);
// Move On
wCount -= d;
dwLen -= d;
pDst += d;
}
}
void ITUnpack16Bit(signed char *pSample, DWORD dwLen, LPBYTE lpMemFile, DWORD dwMemLength, BOOL b215)
//--------------------------------------------------------------------------------------------
{
signed short *pDst = (signed short *)pSample;
LPBYTE pSrc = lpMemFile;
DWORD wHdr = 0;
DWORD wCount = 0;
DWORD bitbuf = 0;
UINT bitnum = 0;
BYTE bLeft = 0;
signed short wTemp = 0, wTemp2 = 0;
while (dwLen)
{
if (!wCount)
{
wCount = 0x4000;
wHdr = bswapLE16(*((LPWORD)pSrc));
pSrc += 2;
bLeft = 17;
wTemp = wTemp2 = 0;
bitbuf = bitnum = 0;
}
DWORD d = wCount;
if (d > dwLen) d = dwLen;
// Unpacking
DWORD dwPos = 0;
do
{
DWORD dwBits = ITReadBits(bitbuf, bitnum, pSrc, bLeft);
if (bLeft < 7)
{
DWORD i = 1 << (bLeft-1);
DWORD j = dwBits;
if (i != j) goto UnpackByte;
dwBits = ITReadBits(bitbuf, bitnum, pSrc, 4) + 1;
bLeft = ((BYTE)(dwBits & 0xFF) < bLeft) ? (BYTE)(dwBits & 0xFF) : (BYTE)((dwBits+1) & 0xFF);
goto Next;
}
if (bLeft < 17)
{
DWORD i = (0xFFFF >> (17 - bLeft)) + 8;
DWORD j = (i - 16) & 0xFFFF;
if ((dwBits <= j) || (dwBits > (i & 0xFFFF))) goto UnpackByte;
dwBits -= j;
bLeft = ((BYTE)(dwBits & 0xFF) < bLeft) ? (BYTE)(dwBits & 0xFF) : (BYTE)((dwBits+1) & 0xFF);
goto Next;
}
if (bLeft >= 18) goto SkipByte;
if (dwBits >= 0x10000)
{
bLeft = (BYTE)(dwBits + 1) & 0xFF;
goto Next;
}
UnpackByte:
if (bLeft < 16)
{
BYTE shift = 16 - bLeft;
signed short c = (signed short)(dwBits << shift);
c >>= shift;
dwBits = (DWORD)c;
}
dwBits += wTemp;
wTemp = (signed short)dwBits;
wTemp2 += wTemp;
#ifdef IT215_SUPPORT
pDst[dwPos] = (b215) ? wTemp2 : wTemp;
#else
pDst[dwPos] = wTemp;
#endif
SkipByte:
dwPos++;
Next:
if (pSrc >= lpMemFile+dwMemLength+1) return;
} while (dwPos < d);
// Move On
wCount -= d;
dwLen -= d;
pDst += d;
if (pSrc >= lpMemFile+dwMemLength) break;
}
}
UINT CSoundFile::SaveMixPlugins(FILE *f, BOOL bUpdate)
//----------------------------------------------------
{
DWORD chinfo[64];
CHAR s[32];
DWORD nPluginSize;
UINT nTotalSize = 0;
UINT nChInfo = 0;
for (UINT i=0; i<MAX_MIXPLUGINS; i++)
{
PSNDMIXPLUGIN p = &m_MixPlugins[i];
if ((p->Info.dwPluginId1) || (p->Info.dwPluginId2))
{
nPluginSize = sizeof(SNDMIXPLUGININFO)+4; // plugininfo+4 (datalen)
if ((p->pMixPlugin) && (bUpdate))
{
p->pMixPlugin->SaveAllParameters();
}
if (p->pPluginData)
{
nPluginSize += p->nPluginDataSize;
}
if (f)
{
s[0] = 'F';
s[1] = 'X';
s[2] = '0' + (i/10);
s[3] = '0' + (i%10);
fwrite(s, 1, 4, f);
fwrite(&nPluginSize, 1, 4, f);
fwrite(&p->Info, 1, sizeof(SNDMIXPLUGININFO), f);
fwrite(&m_MixPlugins[i].nPluginDataSize, 1, 4, f);
if (m_MixPlugins[i].pPluginData)
{
fwrite(m_MixPlugins[i].pPluginData, 1, m_MixPlugins[i].nPluginDataSize, f);
}
}
nTotalSize += nPluginSize + 8;
}
}
for (UINT j=0; j<m_nChannels; j++)
{
if (j < 64)
{
if ((chinfo[j] = ChnSettings[j].nMixPlugin) != 0)
{
nChInfo = j+1;
}
}
}
if (nChInfo)
{
if (f)
{
nPluginSize = 0x58464843;
fwrite(&nPluginSize, 1, 4, f);
nPluginSize = nChInfo*4;
fwrite(&nPluginSize, 1, 4, f);
fwrite(chinfo, 1, nPluginSize, f);
}
nTotalSize += nChInfo*4 + 8;
}
return nTotalSize;
}
UINT CSoundFile::LoadMixPlugins(const void *pData, UINT nLen)
//-----------------------------------------------------------
{
const BYTE *p = (const BYTE *)pData;
UINT nPos = 0;
while (nPos+8 < nLen)
{
DWORD nPluginSize;
UINT nPlugin;
nPluginSize = bswapLE32(*(DWORD *)(p+nPos+4));
if (nPluginSize > nLen-nPos-8) break;;
if ((bswapLE32(*(DWORD *)(p+nPos))) == 0x58464843)
{
for (UINT ch=0; ch<64; ch++) if (ch*4 < nPluginSize)
{
ChnSettings[ch].nMixPlugin = bswapLE32(*(DWORD *)(p+nPos+8+ch*4));
}
} else
{
if ((p[nPos] != 'F') || (p[nPos+1] != 'X')
|| (p[nPos+2] < '0') || (p[nPos+3] < '0'))
{
break;
}
nPlugin = (p[nPos+2]-'0')*10 + (p[nPos+3]-'0');
if ((nPlugin < MAX_MIXPLUGINS) && (nPluginSize >= sizeof(SNDMIXPLUGININFO)+4))
{
DWORD dwExtra = bswapLE32(*(DWORD *)(p+nPos+8+sizeof(SNDMIXPLUGININFO)));
m_MixPlugins[nPlugin].Info = *(const SNDMIXPLUGININFO *)(p+nPos+8);
m_MixPlugins[nPlugin].Info.dwPluginId1 = bswapLE32(m_MixPlugins[nPlugin].Info.dwPluginId1);
m_MixPlugins[nPlugin].Info.dwPluginId2 = bswapLE32(m_MixPlugins[nPlugin].Info.dwPluginId2);
m_MixPlugins[nPlugin].Info.dwInputRouting = bswapLE32(m_MixPlugins[nPlugin].Info.dwInputRouting);
m_MixPlugins[nPlugin].Info.dwOutputRouting = bswapLE32(m_MixPlugins[nPlugin].Info.dwOutputRouting);
for (UINT j=0; j<4; j++)
{
m_MixPlugins[nPlugin].Info.dwReserved[j] = bswapLE32(m_MixPlugins[nPlugin].Info.dwReserved[j]);
}
if ((dwExtra) && (dwExtra <= nPluginSize-sizeof(SNDMIXPLUGININFO)-4))
{
m_MixPlugins[nPlugin].nPluginDataSize = 0;
m_MixPlugins[nPlugin].pPluginData = new signed char [dwExtra];
if (m_MixPlugins[nPlugin].pPluginData)
{
m_MixPlugins[nPlugin].nPluginDataSize = dwExtra;
memcpy(m_MixPlugins[nPlugin].pPluginData, p+nPos+8+sizeof(SNDMIXPLUGININFO)+4, dwExtra);
}
}
}
}
nPos += nPluginSize + 8;
}
return nPos;
}
Reference in a new issue Copy permalink