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gstreamer/gst/modplug/libmodplug/sndfile.cpp
Tim-Philipp Müller bc2cdd57d5 gst/modplug/libmodplug/sndfile.cpp: Fix potential buffer overflow (CVE-2006-4192) (#385788). 
Original commit message from CVS:
* gst/modplug/libmodplug/sndfile.cpp:
Fix potential buffer overflow (CVE-2006-4192) (#385788).
2006-12-14 15:45:56 +00:00

1878 lines
45 KiB
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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)
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <math.h> //for GCCFIX
#include "stdafx.h"
#include "sndfile.h"
#define MMCMP_SUPPORT
#ifdef MMCMP_SUPPORT
extern BOOL MMCMP_Unpack(LPCBYTE *ppMemFile, LPDWORD pdwMemLength);
#endif
// External decompressors
extern void AMSUnpack(const char *psrc, UINT inputlen, char *pdest, UINT dmax, char packcharacter);
extern WORD MDLReadBits(DWORD &bitbuf, UINT &bitnum, LPBYTE &ibuf, CHAR n);
extern int DMFUnpack(LPBYTE psample, LPBYTE ibuf, LPBYTE ibufmax, UINT maxlen);
extern DWORD ITReadBits(DWORD &bitbuf, UINT &bitnum, LPBYTE &ibuf, CHAR n);
extern void ITUnpack8Bit(signed char *pSample, DWORD dwLen, LPBYTE lpMemFile, DWORD dwMemLength, BOOL b215);
extern void ITUnpack16Bit(signed char *pSample, DWORD dwLen, LPBYTE lpMemFile, DWORD dwMemLength, BOOL b215);
#define MAX_PACK_TABLES 3
// Compression table
static signed char UnpackTable[MAX_PACK_TABLES][16] =
//--------------------------------------------
{
// CPU-generated dynamic table
{0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0},
// u-Law table
{0, 1, 2, 4, 8, 16, 32, 64,
-1, -2, -4, -8, -16, -32, -48, -64},
// Linear table
{0, 1, 2, 3, 5, 7, 12, 19,
-1, -2, -3, -5, -7, -12, -19, -31}
};
//////////////////////////////////////////////////////////
// CSoundFile
CSoundFile::CSoundFile()
//----------------------
{
m_nType = MOD_TYPE_NONE;
m_dwSongFlags = 0;
m_nChannels = 0;
m_nMixChannels = 0;
m_nSamples = 0;
m_nInstruments = 0;
m_nPatternNames = 0;
m_lpszPatternNames = NULL;
m_lpszSongComments = NULL;
m_nFreqFactor = m_nTempoFactor = 128;
m_nMasterVolume = 128;
m_nMinPeriod = 0x20;
m_nMaxPeriod = 0x7FFF;
m_nRepeatCount = 0;
memset(Chn, 0, sizeof(Chn));
memset(ChnMix, 0, sizeof(ChnMix));
memset(Ins, 0, sizeof(Ins));
memset(ChnSettings, 0, sizeof(ChnSettings));
memset(Headers, 0, sizeof(Headers));
memset(Order, 0xFF, sizeof(Order));
memset(Patterns, 0, sizeof(Patterns));
memset(m_szNames, 0, sizeof(m_szNames));
memset(m_MixPlugins, 0, sizeof(m_MixPlugins));
}
CSoundFile::~CSoundFile()
//-----------------------
{
Destroy();
}
BOOL CSoundFile::Create(LPCBYTE lpStream, DWORD dwMemLength)
//----------------------------------------------------------
{
int i;
m_nType = MOD_TYPE_NONE;
m_dwSongFlags = 0;
m_nChannels = 0;
m_nMixChannels = 0;
m_nSamples = 0;
m_nInstruments = 0;
m_nFreqFactor = m_nTempoFactor = 128;
m_nMasterVolume = 128;
m_nDefaultGlobalVolume = 256;
m_nGlobalVolume = 256;
m_nOldGlbVolSlide = 0;
m_nDefaultSpeed = 6;
m_nDefaultTempo = 125;
m_nPatternDelay = 0;
m_nFrameDelay = 0;
m_nNextRow = 0;
m_nRow = 0;
m_nPattern = 0;
m_nCurrentPattern = 0;
m_nNextPattern = 0;
m_nRestartPos = 0;
m_nMinPeriod = 16;
m_nMaxPeriod = 32767;
m_nSongPreAmp = 0x30;
m_nPatternNames = 0;
m_nMaxOrderPosition = 0;
m_lpszPatternNames = NULL;
m_lpszSongComments = NULL;
memset(Ins, 0, sizeof(Ins));
memset(ChnMix, 0, sizeof(ChnMix));
memset(Chn, 0, sizeof(Chn));
memset(Headers, 0, sizeof(Headers));
memset(Order, 0xFF, sizeof(Order));
memset(Patterns, 0, sizeof(Patterns));
memset(m_szNames, 0, sizeof(m_szNames));
memset(m_MixPlugins, 0, sizeof(m_MixPlugins));
ResetMidiCfg();
for (UINT npt=0; npt<MAX_PATTERNS; npt++) PatternSize[npt] = 64;
for (UINT nch=0; nch<MAX_BASECHANNELS; nch++)
{
ChnSettings[nch].nPan = 128;
ChnSettings[nch].nVolume = 64;
ChnSettings[nch].dwFlags = 0;
ChnSettings[nch].szName[0] = 0;
}
if (lpStream)
{
#ifdef MMCMP_SUPPORT
BOOL bMMCmp = MMCMP_Unpack(&lpStream, &dwMemLength);
#endif
if ((!ReadXM(lpStream, dwMemLength))
&& (!ReadIT(lpStream, dwMemLength))
&& (!ReadS3M(lpStream, dwMemLength))
&& (!ReadWav(lpStream, dwMemLength))
#ifndef MODPLUG_BASIC_SUPPORT
&& (!ReadSTM(lpStream, dwMemLength))
&& (!ReadMed(lpStream, dwMemLength))
&& (!ReadMTM(lpStream, dwMemLength))
&& (!ReadMDL(lpStream, dwMemLength))
&& (!ReadDBM(lpStream, dwMemLength))
&& (!Read669(lpStream, dwMemLength))
&& (!ReadFAR(lpStream, dwMemLength))
&& (!ReadAMS(lpStream, dwMemLength))
&& (!ReadOKT(lpStream, dwMemLength))
&& (!ReadPTM(lpStream, dwMemLength))
&& (!ReadUlt(lpStream, dwMemLength))
&& (!ReadDMF(lpStream, dwMemLength))
&& (!ReadDSM(lpStream, dwMemLength))
&& (!ReadUMX(lpStream, dwMemLength))
&& (!ReadAMF(lpStream, dwMemLength))
&& (!ReadPSM(lpStream, dwMemLength))
&& (!ReadMT2(lpStream, dwMemLength))
#endif // MODPLUG_BASIC_SUPPORT
&& (!ReadMod(lpStream, dwMemLength))) m_nType = MOD_TYPE_NONE;
#ifdef MMCMP_SUPPORT
if (bMMCmp)
{
GlobalFreePtr(lpStream);
lpStream = NULL;
}
#endif
}
// Adjust song names
for (i=0; i<MAX_SAMPLES; i++)
{
LPSTR p = m_szNames[i];
int j = 31;
p[j] = 0;
while ((j>=0) && (p[j]<=' ')) p[j--] = 0;
while (j>=0)
{
if (((BYTE)p[j]) < ' ') p[j] = ' ';
j--;
}
}
// Adjust channels
for (i=0; i<MAX_BASECHANNELS; i++)
{
if (ChnSettings[i].nVolume > 64) ChnSettings[i].nVolume = 64;
if (ChnSettings[i].nPan > 256) ChnSettings[i].nPan = 128;
Chn[i].nPan = ChnSettings[i].nPan;
Chn[i].nGlobalVol = ChnSettings[i].nVolume;
Chn[i].dwFlags = ChnSettings[i].dwFlags;
Chn[i].nVolume = 256;
Chn[i].nCutOff = 0x7F;
}
// Checking instruments
MODINSTRUMENT *pins = Ins;
for (i=0; i<MAX_INSTRUMENTS; i++, pins++)
{
if (pins->pSample)
{
if (pins->nLoopEnd > pins->nLength) pins->nLoopEnd = pins->nLength;
if (pins->nLoopStart + 3 >= pins->nLoopEnd)
{
pins->nLoopStart = 0;
pins->nLoopEnd = 0;
}
if (pins->nSustainEnd > pins->nLength) pins->nSustainEnd = pins->nLength;
if (pins->nSustainStart + 3 >= pins->nSustainEnd)
{
pins->nSustainStart = 0;
pins->nSustainEnd = 0;
}
} else
{
pins->nLength = 0;
pins->nLoopStart = 0;
pins->nLoopEnd = 0;
pins->nSustainStart = 0;
pins->nSustainEnd = 0;
}
if (!pins->nLoopEnd) pins->uFlags &= ~CHN_LOOP;
if (!pins->nSustainEnd) pins->uFlags &= ~CHN_SUSTAINLOOP;
if (pins->nGlobalVol > 64) pins->nGlobalVol = 64;
}
// Check invalid instruments
while ((m_nInstruments > 0) && (!Headers[m_nInstruments])) m_nInstruments--;
// Set default values
if (m_nSongPreAmp < 0x20) m_nSongPreAmp = 0x20;
if (m_nDefaultTempo < 32) m_nDefaultTempo = 125;
if (!m_nDefaultSpeed) m_nDefaultSpeed = 6;
m_nMusicSpeed = m_nDefaultSpeed;
m_nMusicTempo = m_nDefaultTempo;
m_nGlobalVolume = m_nDefaultGlobalVolume;
m_nNextPattern = 0;
m_nCurrentPattern = 0;
m_nPattern = 0;
m_nBufferCount = 0;
m_nTickCount = m_nMusicSpeed;
m_nNextRow = 0;
m_nRow = 0;
if ((m_nRestartPos >= MAX_ORDERS) || (Order[m_nRestartPos] >= MAX_PATTERNS)) m_nRestartPos = 0;
// Load plugins
if (gpMixPluginCreateProc)
{
for (UINT iPlug=0; iPlug<MAX_MIXPLUGINS; iPlug++)
{
if ((m_MixPlugins[iPlug].Info.dwPluginId1)
|| (m_MixPlugins[iPlug].Info.dwPluginId2))
{
gpMixPluginCreateProc(&m_MixPlugins[iPlug]);
if (m_MixPlugins[iPlug].pMixPlugin)
{
m_MixPlugins[iPlug].pMixPlugin->RestoreAllParameters();
}
}
}
}
if (m_nType)
{
UINT maxpreamp = 0x10+(m_nChannels*8);
if (maxpreamp > 100) maxpreamp = 100;
if (m_nSongPreAmp > maxpreamp) m_nSongPreAmp = maxpreamp;
return TRUE;
}
return FALSE;
}
BOOL CSoundFile::Destroy()
//------------------------
{
int i;
for (i=0; i<MAX_PATTERNS; i++) if (Patterns[i])
{
FreePattern(Patterns[i]);
Patterns[i] = NULL;
}
m_nPatternNames = 0;
if (m_lpszPatternNames)
{
delete m_lpszPatternNames;
m_lpszPatternNames = NULL;
}
if (m_lpszSongComments)
{
delete m_lpszSongComments;
m_lpszSongComments = NULL;
}
for (i=1; i<MAX_SAMPLES; i++)
{
MODINSTRUMENT *pins = &Ins[i];
if (pins->pSample)
{
FreeSample(pins->pSample);
pins->pSample = NULL;
}
}
for (i=0; i<MAX_INSTRUMENTS; i++)
{
if (Headers[i])
{
delete Headers[i];
Headers[i] = NULL;
}
}
for (i=0; i<MAX_MIXPLUGINS; i++)
{
if ((m_MixPlugins[i].nPluginDataSize) && (m_MixPlugins[i].pPluginData))
{
m_MixPlugins[i].nPluginDataSize = 0;
delete [] (signed char*)m_MixPlugins[i].pPluginData;
m_MixPlugins[i].pPluginData = NULL;
}
m_MixPlugins[i].pMixState = NULL;
if (m_MixPlugins[i].pMixPlugin)
{
m_MixPlugins[i].pMixPlugin->Release();
m_MixPlugins[i].pMixPlugin = NULL;
}
}
m_nType = MOD_TYPE_NONE;
m_nChannels = m_nSamples = m_nInstruments = 0;
return TRUE;
}
//////////////////////////////////////////////////////////////////////////
// Memory Allocation
MODCOMMAND *CSoundFile::AllocatePattern(UINT rows, UINT nchns)
//------------------------------------------------------------
{
MODCOMMAND *p = new MODCOMMAND[rows*nchns];
if (p) memset(p, 0, rows*nchns*sizeof(MODCOMMAND));
return p;
}
void CSoundFile::FreePattern(LPVOID pat)
//--------------------------------------
{
if (pat) delete [] (signed char*)pat;
}
signed char* CSoundFile::AllocateSample(UINT nbytes)
//-------------------------------------------
{
signed char * p = (signed char *)GlobalAllocPtr(GHND, (nbytes+39) & ~7);
if (p) p += 16;
return p;
}
void CSoundFile::FreeSample(LPVOID p)
//-----------------------------------
{
if (p)
{
GlobalFreePtr(((LPSTR)p)-16);
}
}
//////////////////////////////////////////////////////////////////////////
// Misc functions
void CSoundFile::ResetMidiCfg()
//-----------------------------
{
memset(&m_MidiCfg, 0, sizeof(m_MidiCfg));
lstrcpy(&m_MidiCfg.szMidiGlb[MIDIOUT_START*32], "FF");
lstrcpy(&m_MidiCfg.szMidiGlb[MIDIOUT_STOP*32], "FC");
lstrcpy(&m_MidiCfg.szMidiGlb[MIDIOUT_NOTEON*32], "9c n v");
lstrcpy(&m_MidiCfg.szMidiGlb[MIDIOUT_NOTEOFF*32], "9c n 0");
lstrcpy(&m_MidiCfg.szMidiGlb[MIDIOUT_PROGRAM*32], "Cc p");
lstrcpy(&m_MidiCfg.szMidiSFXExt[0], "F0F000z");
for (int iz=0; iz<16; iz++) wsprintf(&m_MidiCfg.szMidiZXXExt[iz*32], "F0F001%02X", iz*8);
}
UINT CSoundFile::GetNumChannels() const
//-------------------------------------
{
UINT n = 0;
for (UINT i=0; i<m_nChannels; i++) if (ChnSettings[i].nVolume) n++;
return n;
}
UINT CSoundFile::GetSongComments(LPSTR s, UINT len, UINT linesize)
//----------------------------------------------------------------
{
LPCSTR p = m_lpszSongComments;
if (!p) return 0;
UINT i = 2, ln=0;
if ((len) && (s)) s[0] = '\x0D';
if ((len > 1) && (s)) s[1] = '\x0A';
while ((*p) && (i+2 < len))
{
BYTE c = (BYTE)*p++;
if ((c == 0x0D) || ((c == ' ') && (ln >= linesize)))
{ if (s) { s[i++] = '\x0D'; s[i++] = '\x0A'; } else i+= 2; ln=0; }
else
if (c >= 0x20) { if (s) s[i++] = c; else i++; ln++; }
}
if (s) s[i] = 0;
return i;
}
UINT CSoundFile::GetRawSongComments(LPSTR s, UINT len, UINT linesize)
//-------------------------------------------------------------------
{
LPCSTR p = m_lpszSongComments;
if (!p) return 0;
UINT i = 0, ln=0;
while ((*p) && (i < len-1))
{
BYTE c = (BYTE)*p++;
if ((c == 0x0D) || (c == 0x0A))
{
if (ln)
{
while (ln < linesize) { if (s) s[i] = ' '; i++; ln++; }
ln = 0;
}
} else
if ((c == ' ') && (!ln))
{
UINT k=0;
while ((p[k]) && (p[k] >= ' ')) k++;
if (k <= linesize)
{
if (s) s[i] = ' ';
i++;
ln++;
}
} else
{
if (s) s[i] = c;
i++;
ln++;
if (ln == linesize) ln = 0;
}
}
if (ln)
{
while ((ln < linesize) && (i < len))
{
if (s) s[i] = ' ';
i++;
ln++;
}
}
if (s) s[i] = 0;
return i;
}
BOOL CSoundFile::SetWaveConfig(UINT nRate,UINT nBits,UINT nChannels,BOOL bMMX)
//----------------------------------------------------------------------------
{
BOOL bReset = FALSE;
DWORD d = gdwSoundSetup & ~SNDMIX_ENABLEMMX;
if (bMMX) d |= SNDMIX_ENABLEMMX;
if ((gdwMixingFreq != nRate) || (gnBitsPerSample != nBits) || (gnChannels != nChannels) || (d != gdwSoundSetup)) bReset = TRUE;
gnChannels = nChannels;
gdwSoundSetup = d;
gdwMixingFreq = nRate;
gnBitsPerSample = nBits;
InitPlayer(bReset);
return TRUE;
}
BOOL CSoundFile::SetResamplingMode(UINT nMode)
//--------------------------------------------
{
DWORD d = gdwSoundSetup & ~(SNDMIX_NORESAMPLING|SNDMIX_HQRESAMPLER|SNDMIX_ULTRAHQSRCMODE);
switch(nMode)
{
case SRCMODE_NEAREST: d |= SNDMIX_NORESAMPLING; break;
case SRCMODE_LINEAR: break;
case SRCMODE_SPLINE: d |= SNDMIX_HQRESAMPLER; break;
case SRCMODE_POLYPHASE: d |= (SNDMIX_HQRESAMPLER|SNDMIX_ULTRAHQSRCMODE); break;
default:
return FALSE;
}
gdwSoundSetup = d;
return TRUE;
}
BOOL CSoundFile::SetMasterVolume(UINT nVol, BOOL bAdjustAGC)
//----------------------------------------------------------
{
if (nVol < 1) nVol = 1;
if (nVol > 0x200) nVol = 0x200; // x4 maximum
if ((nVol < m_nMasterVolume) && (nVol) && (gdwSoundSetup & SNDMIX_AGC) && (bAdjustAGC))
{
gnAGC = gnAGC * m_nMasterVolume / nVol;
if (gnAGC > AGC_UNITY) gnAGC = AGC_UNITY;
}
m_nMasterVolume = nVol;
return TRUE;
}
void CSoundFile::SetAGC(BOOL b)
//-----------------------------
{
if (b)
{
if (!(gdwSoundSetup & SNDMIX_AGC))
{
gdwSoundSetup |= SNDMIX_AGC;
gnAGC = AGC_UNITY;
}
} else gdwSoundSetup &= ~SNDMIX_AGC;
}
UINT CSoundFile::GetNumPatterns() const
//-------------------------------------
{
UINT i = 0;
while ((i < MAX_ORDERS) && (Order[i] < 0xFF)) i++;
return i;
}
UINT CSoundFile::GetNumInstruments() const
//----------------------------------------
{
UINT n=0;
for (UINT i=0; i<MAX_INSTRUMENTS; i++) if (Ins[i].pSample) n++;
return n;
}
UINT CSoundFile::GetMaxPosition() const
//-------------------------------------
{
UINT max = 0;
UINT i = 0;
while ((i < MAX_ORDERS) && (Order[i] != 0xFF))
{
if (Order[i] < MAX_PATTERNS) max += PatternSize[Order[i]];
i++;
}
return max;
}
UINT CSoundFile::GetCurrentPos() const
//------------------------------------
{
UINT pos = 0;
for (UINT i=0; i<m_nCurrentPattern; i++) if (Order[i] < MAX_PATTERNS)
pos += PatternSize[Order[i]];
return pos + m_nRow;
}
void CSoundFile::SetCurrentPos(UINT nPos)
//---------------------------------------
{
UINT i, nPattern;
for (i=0; i<MAX_CHANNELS; i++)
{
Chn[i].nNote = Chn[i].nNewNote = Chn[i].nNewIns = 0;
Chn[i].pInstrument = NULL;
Chn[i].pHeader = NULL;
Chn[i].nPortamentoDest = 0;
Chn[i].nCommand = 0;
Chn[i].nPatternLoopCount = 0;
Chn[i].nPatternLoop = 0;
Chn[i].nFadeOutVol = 0;
Chn[i].dwFlags |= CHN_KEYOFF|CHN_NOTEFADE;
Chn[i].nTremorCount = 0;
}
if (!nPos)
{
for (i=0; i<MAX_CHANNELS; i++)
{
Chn[i].nPeriod = 0;
Chn[i].nPos = Chn[i].nLength = 0;
Chn[i].nLoopStart = 0;
Chn[i].nLoopEnd = 0;
Chn[i].nROfs = Chn[i].nLOfs = 0;
Chn[i].pSample = NULL;
Chn[i].pInstrument = NULL;
Chn[i].pHeader = NULL;
Chn[i].nCutOff = 0x7F;
Chn[i].nResonance = 0;
Chn[i].nLeftVol = Chn[i].nRightVol = 0;
Chn[i].nNewLeftVol = Chn[i].nNewRightVol = 0;
Chn[i].nLeftRamp = Chn[i].nRightRamp = 0;
Chn[i].nVolume = 256;
if (i < MAX_BASECHANNELS)
{
Chn[i].dwFlags = ChnSettings[i].dwFlags;
Chn[i].nPan = ChnSettings[i].nPan;
Chn[i].nGlobalVol = ChnSettings[i].nVolume;
} else
{
Chn[i].dwFlags = 0;
Chn[i].nPan = 128;
Chn[i].nGlobalVol = 64;
}
}
m_nGlobalVolume = m_nDefaultGlobalVolume;
m_nMusicSpeed = m_nDefaultSpeed;
m_nMusicTempo = m_nDefaultTempo;
}
m_dwSongFlags &= ~(SONG_PATTERNLOOP|SONG_CPUVERYHIGH|SONG_FADINGSONG|SONG_ENDREACHED|SONG_GLOBALFADE);
for (nPattern = 0; nPattern < MAX_ORDERS; nPattern++)
{
UINT ord = Order[nPattern];
if (ord == 0xFE) continue;
if (ord == 0xFF) break;
if (ord < MAX_PATTERNS)
{
if (nPos < (UINT)PatternSize[ord]) break;
nPos -= PatternSize[ord];
}
}
// Buggy position ?
if ((nPattern >= MAX_ORDERS)
|| (Order[nPattern] >= MAX_PATTERNS)
|| (nPos >= PatternSize[Order[nPattern]]))
{
nPos = 0;
nPattern = 0;
}
UINT nRow = nPos;
if ((nRow) && (Order[nPattern] < MAX_PATTERNS))
{
MODCOMMAND *p = Patterns[Order[nPattern]];
if ((p) && (nRow < PatternSize[Order[nPattern]]))
{
BOOL bOk = FALSE;
while ((!bOk) && (nRow > 0))
{
UINT n = nRow * m_nChannels;
for (UINT k=0; k<m_nChannels; k++, n++)
{
if (p[n].note)
{
bOk = TRUE;
break;
}
}
if (!bOk) nRow--;
}
}
}
m_nNextPattern = nPattern;
m_nNextRow = nRow;
m_nTickCount = m_nMusicSpeed;
m_nBufferCount = 0;
m_nPatternDelay = 0;
m_nFrameDelay = 0;
}
void CSoundFile::SetCurrentOrder(UINT nPos)
//-----------------------------------------
{
while ((nPos < MAX_ORDERS) && (Order[nPos] == 0xFE)) nPos++;
if ((nPos >= MAX_ORDERS) || (Order[nPos] >= MAX_PATTERNS)) return;
for (UINT j=0; j<MAX_CHANNELS; j++)
{
Chn[j].nPeriod = 0;
Chn[j].nNote = 0;
Chn[j].nPortamentoDest = 0;
Chn[j].nCommand = 0;
Chn[j].nPatternLoopCount = 0;
Chn[j].nPatternLoop = 0;
Chn[j].nTremorCount = 0;
}
if (!nPos)
{
SetCurrentPos(0);
} else
{
m_nNextPattern = nPos;
m_nRow = m_nNextRow = 0;
m_nPattern = 0;
m_nTickCount = m_nMusicSpeed;
m_nBufferCount = 0;
m_nTotalCount = 0;
m_nPatternDelay = 0;
m_nFrameDelay = 0;
}
m_dwSongFlags &= ~(SONG_PATTERNLOOP|SONG_CPUVERYHIGH|SONG_FADINGSONG|SONG_ENDREACHED|SONG_GLOBALFADE);
}
void CSoundFile::ResetChannels()
//------------------------------
{
m_dwSongFlags &= ~(SONG_CPUVERYHIGH|SONG_FADINGSONG|SONG_ENDREACHED|SONG_GLOBALFADE);
m_nBufferCount = 0;
for (UINT i=0; i<MAX_CHANNELS; i++)
{
Chn[i].nROfs = Chn[i].nLOfs = 0;
}
}
void CSoundFile::LoopPattern(int nPat, int nRow)
//----------------------------------------------
{
if ((nPat < 0) || (nPat >= MAX_PATTERNS) || (!Patterns[nPat]))
{
m_dwSongFlags &= ~SONG_PATTERNLOOP;
} else
{
if ((nRow < 0) || (nRow >= PatternSize[nPat])) nRow = 0;
m_nPattern = nPat;
m_nRow = m_nNextRow = nRow;
m_nTickCount = m_nMusicSpeed;
m_nPatternDelay = 0;
m_nFrameDelay = 0;
m_nBufferCount = 0;
m_dwSongFlags |= SONG_PATTERNLOOP;
}
}
UINT CSoundFile::GetBestSaveFormat() const
//----------------------------------------
{
if ((!m_nSamples) || (!m_nChannels)) return MOD_TYPE_NONE;
if (!m_nType) return MOD_TYPE_NONE;
if (m_nType & (MOD_TYPE_MOD|MOD_TYPE_OKT))
return MOD_TYPE_MOD;
if (m_nType & (MOD_TYPE_S3M|MOD_TYPE_STM|MOD_TYPE_ULT|MOD_TYPE_FAR|MOD_TYPE_PTM))
return MOD_TYPE_S3M;
if (m_nType & (MOD_TYPE_XM|MOD_TYPE_MED|MOD_TYPE_MTM|MOD_TYPE_MT2))
return MOD_TYPE_XM;
return MOD_TYPE_IT;
}
UINT CSoundFile::GetSaveFormats() const
//-------------------------------------
{
UINT n = 0;
if ((!m_nSamples) || (!m_nChannels) || (m_nType == MOD_TYPE_NONE)) return 0;
switch(m_nType)
{
case MOD_TYPE_MOD: n = MOD_TYPE_MOD;
case MOD_TYPE_S3M: n = MOD_TYPE_S3M;
}
n |= MOD_TYPE_XM | MOD_TYPE_IT;
if (!m_nInstruments)
{
if (m_nSamples < 32) n |= MOD_TYPE_MOD;
n |= MOD_TYPE_S3M;
}
return n;
}
UINT CSoundFile::GetSampleName(UINT nSample,LPSTR s) const
//--------------------------------------------------------
{
char sztmp[40] = ""; // changed from CHAR
memcpy(sztmp, m_szNames[nSample],32);
sztmp[31] = 0;
if (s) strcpy(s, sztmp);
return strlen(sztmp);
}
UINT CSoundFile::GetInstrumentName(UINT nInstr,LPSTR s) const
//-----------------------------------------------------------
{
char sztmp[40] = ""; // changed from CHAR
if ((nInstr >= MAX_INSTRUMENTS) || (!Headers[nInstr]))
{
if (s) *s = 0;
return 0;
}
INSTRUMENTHEADER *penv = Headers[nInstr];
memcpy(sztmp, penv->name, 32);
sztmp[31] = 0;
if (s) strcpy(s, sztmp);
return strlen(sztmp);
}
#ifndef NO_PACKING
UINT CSoundFile::PackSample(int &sample, int next)
//------------------------------------------------
{
UINT i = 0;
int delta = next - sample;
if (delta >= 0)
{
for (i=0; i<7; i++) if (delta <= (int)CompressionTable[i+1]) break;
} else
{
for (i=8; i<15; i++) if (delta >= (int)CompressionTable[i+1]) break;
}
sample += (int)CompressionTable[i];
return i;
}
BOOL CSoundFile::CanPackSample(LPSTR pSample, UINT nLen, UINT nPacking, BYTE *result)
//-----------------------------------------------------------------------------------
{
int pos, old, oldpos, besttable = 0;
DWORD dwErr, dwTotal, dwResult;
int i,j;
if (result) *result = 0;
if ((!pSample) || (nLen < 1024)) return FALSE;
// Try packing with different tables
dwResult = 0;
for (j=1; j<MAX_PACK_TABLES; j++)
{
memcpy(CompressionTable, UnpackTable[j], 16);
dwErr = 0;
dwTotal = 1;
old = pos = oldpos = 0;
for (i=0; i<(int)nLen; i++)
{
int s = (int)pSample[i];
PackSample(pos, s);
dwErr += abs(pos - oldpos);
dwTotal += abs(s - old);
old = s;
oldpos = pos;
}
dwErr = _muldiv(dwErr, 100, dwTotal);
if (dwErr >= dwResult)
{
dwResult = dwErr;
besttable = j;
}
}
memcpy(CompressionTable, UnpackTable[besttable], 16);
if (result)
{
if (dwResult > 100) *result = 100; else *result = (BYTE)dwResult;
}
return (dwResult >= nPacking) ? TRUE : FALSE;
}
#endif // NO_PACKING
#ifndef MODPLUG_NO_FILESAVE
UINT CSoundFile::WriteSample(FILE *f, MODINSTRUMENT *pins, UINT nFlags, UINT nMaxLen)
//-----------------------------------------------------------------------------------
{
UINT len = 0, bufcount;
signed char buffer[4096];
signed char *pSample = (signed char *)pins->pSample;
UINT nLen = pins->nLength;
if ((nMaxLen) && (nLen > nMaxLen)) nLen = nMaxLen;
if ((!pSample) || (f == NULL) || (!nLen)) return 0;
switch(nFlags)
{
#ifndef NO_PACKING
// 3: 4-bit ADPCM data
case RS_ADPCM4:
{
int pos;
len = (nLen + 1) / 2;
fwrite(CompressionTable, 16, 1, f);
bufcount = 0;
pos = 0;
for (UINT j=0; j<len; j++)
{
BYTE b;
// Sample #1
b = PackSample(pos, (int)pSample[j*2]);
// Sample #2
b |= PackSample(pos, (int)pSample[j*2+1]) << 4;
buffer[bufcount++] = (signed char)b;
if (bufcount >= sizeof(buffer))
{
fwrite(buffer, 1, bufcount, f);
bufcount = 0;
}
}
if (bufcount) fwrite(buffer, 1, bufcount, f);
len += 16;
}
break;
#endif // NO_PACKING
// 16-bit samples
case RS_PCM16U:
case RS_PCM16D:
case RS_PCM16S:
{
short int *p = (short int *)pSample;
int s_old = 0, s_ofs;
len = nLen * 2;
bufcount = 0;
s_ofs = (nFlags == RS_PCM16U) ? 0x8000 : 0;
for (UINT j=0; j<nLen; j++)
{
int s_new = *p;
p++;
if (pins->uFlags & CHN_STEREO)
{
s_new = (s_new + (*p) + 1) >> 1;
p++;
}
if (nFlags == RS_PCM16D)
{
*((short *)(&buffer[bufcount])) = (short)(s_new - s_old);
s_old = s_new;
} else
{
*((short *)(&buffer[bufcount])) = (short)(s_new + s_ofs);
}
bufcount += 2;
if (bufcount >= sizeof(buffer) - 1)
{
fwrite(buffer, 1, bufcount, f);
bufcount = 0;
}
}
if (bufcount) fwrite(buffer, 1, bufcount, f);
}
break;
// 8-bit Stereo samples (not interleaved)
case RS_STPCM8S:
case RS_STPCM8U:
case RS_STPCM8D:
{
int s_ofs = (nFlags == RS_STPCM8U) ? 0x80 : 0;
for (UINT iCh=0; iCh<2; iCh++)
{
signed char *p = pSample + iCh;
int s_old = 0;
bufcount = 0;
for (UINT j=0; j<nLen; j++)
{
int s_new = *p;
p += 2;
if (nFlags == RS_STPCM8D)
{
buffer[bufcount++] = (signed char)(s_new - s_old);
s_old = s_new;
} else
{
buffer[bufcount++] = (signed char)(s_new + s_ofs);
}
if (bufcount >= sizeof(buffer))
{
fwrite(buffer, 1, bufcount, f);
bufcount = 0;
}
}
if (bufcount) fwrite(buffer, 1, bufcount, f);
}
}
len = nLen * 2;
break;
// 16-bit Stereo samples (not interleaved)
case RS_STPCM16S:
case RS_STPCM16U:
case RS_STPCM16D:
{
int s_ofs = (nFlags == RS_STPCM16U) ? 0x8000 : 0;
for (UINT iCh=0; iCh<2; iCh++)
{
signed short *p = ((signed short *)pSample) + iCh;
int s_old = 0;
bufcount = 0;
for (UINT j=0; j<nLen; j++)
{
int s_new = *p;
p += 2;
if (nFlags == RS_STPCM16D)
{
*((short *)(&buffer[bufcount])) = (short)(s_new - s_old);
s_old = s_new;
} else
{
*((short *)(&buffer[bufcount])) = (short)(s_new + s_ofs);
}
bufcount += 2;
if (bufcount >= sizeof(buffer))
{
fwrite(buffer, 1, bufcount, f);
bufcount = 0;
}
}
if (bufcount) fwrite(buffer, 1, bufcount, f);
}
}
len = nLen*4;
break;
// Stereo signed interleaved
case RS_STIPCM8S:
case RS_STIPCM16S:
len = nLen * 2;
if (nFlags == RS_STIPCM16S) len *= 2;
fwrite(pSample, 1, len, f);
break;
// Default: assume 8-bit PCM data
default:
len = nLen;
bufcount = 0;
{
signed char *p = pSample;
int sinc = (pins->uFlags & CHN_16BIT) ? 2 : 1;
int s_old = 0, s_ofs = (nFlags == RS_PCM8U) ? 0x80 : 0;
if (pins->uFlags & CHN_16BIT) p++;
for (UINT j=0; j<len; j++)
{
int s_new = (signed char)(*p);
p += sinc;
if (pins->uFlags & CHN_STEREO)
{
s_new = (s_new + ((int)*p) + 1) >> 1;
p += sinc;
}
if (nFlags == RS_PCM8D)
{
buffer[bufcount++] = (signed char)(s_new - s_old);
s_old = s_new;
} else
{
buffer[bufcount++] = (signed char)(s_new + s_ofs);
}
if (bufcount >= sizeof(buffer))
{
fwrite(buffer, 1, bufcount, f);
bufcount = 0;
}
}
if (bufcount) fwrite(buffer, 1, bufcount, f);
}
}
return len;
}
#endif // MODPLUG_NO_FILESAVE
// Flags:
// 0 = signed 8-bit PCM data (default)
// 1 = unsigned 8-bit PCM data
// 2 = 8-bit ADPCM data with linear table
// 3 = 4-bit ADPCM data
// 4 = 16-bit ADPCM data with linear table
// 5 = signed 16-bit PCM data
// 6 = unsigned 16-bit PCM data
UINT CSoundFile::ReadSample(MODINSTRUMENT *pIns, UINT nFlags, LPCSTR lpMemFile, DWORD dwMemLength)
//------------------------------------------------------------------------------------------------
{
UINT len = 0, mem = pIns->nLength+6;
if ((!pIns) || ((int)pIns->nLength < 4) || (!lpMemFile)) return 0;
if (pIns->nLength > MAX_SAMPLE_LENGTH) pIns->nLength = MAX_SAMPLE_LENGTH;
pIns->uFlags &= ~(CHN_16BIT|CHN_STEREO);
if (nFlags & RSF_16BIT)
{
mem *= 2;
pIns->uFlags |= CHN_16BIT;
}
if (nFlags & RSF_STEREO)
{
mem *= 2;
pIns->uFlags |= CHN_STEREO;
}
if ((pIns->pSample = AllocateSample(mem)) == NULL)
{
pIns->nLength = 0;
return 0;
}
switch(nFlags)
{
// 1: 8-bit unsigned PCM data
case RS_PCM8U:
{
len = pIns->nLength;
if (len > dwMemLength) len = pIns->nLength = dwMemLength;
signed char *pSample = pIns->pSample;
for (UINT j=0; j<len; j++) pSample[j] = (signed char)(lpMemFile[j] - 0x80);
}
break;
// 2: 8-bit ADPCM data with linear table
case RS_PCM8D:
{
len = pIns->nLength;
if (len > dwMemLength) break;
signed char *pSample = pIns->pSample;
const signed char *p = (const signed char *)lpMemFile;
int delta = 0;
for (UINT j=0; j<len; j++)
{
delta += p[j];
*pSample++ = (signed char)delta;
}
}
break;
// 3: 4-bit ADPCM data
case RS_ADPCM4:
{
len = (pIns->nLength + 1) / 2;
if (len > dwMemLength - 16) break;
memcpy(CompressionTable, lpMemFile, 16);
lpMemFile += 16;
signed char *pSample = pIns->pSample;
signed char delta = 0;
for (UINT j=0; j<len; j++)
{
BYTE b0 = (BYTE)lpMemFile[j];
BYTE b1 = (BYTE)(lpMemFile[j] >> 4);
delta = (signed char)GetDeltaValue((int)delta, b0);
pSample[0] = delta;
delta = (signed char)GetDeltaValue((int)delta, b1);
pSample[1] = delta;
pSample += 2;
}
len += 16;
}
break;
// 4: 16-bit ADPCM data with linear table
case RS_PCM16D:
{
len = pIns->nLength * 2;
if (len > dwMemLength) break;
short int *pSample = (short int *)pIns->pSample;
short int *p = (short int *)lpMemFile;
int delta16 = 0;
for (UINT j=0; j<len; j+=2)
{
delta16 += bswapLE16(*p++);
*pSample++ = (short int)delta16;
}
}
break;
// 5: 16-bit signed PCM data
case RS_PCM16S:
{
len = pIns->nLength * 2;
if (len <= dwMemLength) memcpy(pIns->pSample, lpMemFile, len);
short int *pSample = (short int *)pIns->pSample;
for (UINT j=0; j<len; j+=2)
{
short int s = bswapLE16(*pSample);
*pSample++ = s;
}
}
break;
// 16-bit signed mono PCM motorola byte order
case RS_PCM16M:
len = pIns->nLength * 2;
if (len > dwMemLength) len = dwMemLength & ~1;
if (len > 1)
{
signed char *pSample = (signed char *)pIns->pSample;
signed char *pSrc = (signed char *)lpMemFile;
for (UINT j=0; j<len; j+=2)
{
// pSample[j] = pSrc[j+1];
// pSample[j+1] = pSrc[j];
*((unsigned short *)(pSample+j)) = bswapBE16(*((unsigned short *)(pSrc+j)));
}
}
break;
// 6: 16-bit unsigned PCM data
case RS_PCM16U:
{
len = pIns->nLength * 2;
if (len > dwMemLength) break;
short int *pSample = (short int *)pIns->pSample;
short int *pSrc = (short int *)lpMemFile;
for (UINT j=0; j<len; j+=2) *pSample++ = bswapLE16(*(pSrc++)) - 0x8000;
}
break;
// 16-bit signed stereo big endian
case RS_STPCM16M:
len = pIns->nLength * 2;
if (len*2 <= dwMemLength)
{
signed char *pSample = (signed char *)pIns->pSample;
signed char *pSrc = (signed char *)lpMemFile;
for (UINT j=0; j<len; j+=2)
{
// pSample[j*2] = pSrc[j+1];
// pSample[j*2+1] = pSrc[j];
// pSample[j*2+2] = pSrc[j+1+len];
// pSample[j*2+3] = pSrc[j+len];
*((unsigned short *)(pSample+j*2)) = bswapBE16(*((unsigned short *)(pSrc+j)));
*((unsigned short *)(pSample+j*2+2)) = bswapBE16(*((unsigned short *)(pSrc+j+len)));
}
len *= 2;
}
break;
// 8-bit stereo samples
case RS_STPCM8S:
case RS_STPCM8U:
case RS_STPCM8D:
{
int iadd_l = 0, iadd_r = 0;
if (nFlags == RS_STPCM8U) { iadd_l = iadd_r = -128; }
len = pIns->nLength;
signed char *psrc = (signed char *)lpMemFile;
signed char *pSample = (signed char *)pIns->pSample;
if (len*2 > dwMemLength) break;
for (UINT j=0; j<len; j++)
{
pSample[j*2] = (signed char)(psrc[0] + iadd_l);
pSample[j*2+1] = (signed char)(psrc[len] + iadd_r);
psrc++;
if (nFlags == RS_STPCM8D)
{
iadd_l = pSample[j*2];
iadd_r = pSample[j*2+1];
}
}
len *= 2;
}
break;
// 16-bit stereo samples
case RS_STPCM16S:
case RS_STPCM16U:
case RS_STPCM16D:
{
int iadd_l = 0, iadd_r = 0;
if (nFlags == RS_STPCM16U) { iadd_l = iadd_r = -0x8000; }
len = pIns->nLength;
short int *psrc = (short int *)lpMemFile;
short int *pSample = (short int *)pIns->pSample;
if (len*4 > dwMemLength) break;
for (UINT j=0; j<len; j++)
{
pSample[j*2] = (short int) (bswapLE16(psrc[0]) + iadd_l);
pSample[j*2+1] = (short int) (bswapLE16(psrc[len]) + iadd_r);
psrc++;
if (nFlags == RS_STPCM16D)
{
iadd_l = pSample[j*2];
iadd_r = pSample[j*2+1];
}
}
len *= 4;
}
break;
// IT 2.14 compressed samples
case RS_IT2148:
case RS_IT21416:
case RS_IT2158:
case RS_IT21516:
len = dwMemLength;
if (len < 4) break;
if ((nFlags == RS_IT2148) || (nFlags == RS_IT2158))
ITUnpack8Bit(pIns->pSample, pIns->nLength, (LPBYTE)lpMemFile, dwMemLength, (nFlags == RS_IT2158));
else
ITUnpack16Bit(pIns->pSample, pIns->nLength, (LPBYTE)lpMemFile, dwMemLength, (nFlags == RS_IT21516));
break;
#ifndef MODPLUG_BASIC_SUPPORT
#ifndef FASTSOUNDLIB
// 8-bit interleaved stereo samples
case RS_STIPCM8S:
case RS_STIPCM8U:
{
int iadd = 0;
if (nFlags == RS_STIPCM8U) { iadd = -0x80; }
len = pIns->nLength;
if (len*2 > dwMemLength) len = dwMemLength >> 1;
LPBYTE psrc = (LPBYTE)lpMemFile;
LPBYTE pSample = (LPBYTE)pIns->pSample;
for (UINT j=0; j<len; j++)
{
pSample[j*2] = (signed char)(psrc[0] + iadd);
pSample[j*2+1] = (signed char)(psrc[1] + iadd);
psrc+=2;
}
len *= 2;
}
break;
// 16-bit interleaved stereo samples
case RS_STIPCM16S:
case RS_STIPCM16U:
{
int iadd = 0;
if (nFlags == RS_STIPCM16U) iadd = -32768;
len = pIns->nLength;
if (len*4 > dwMemLength) len = dwMemLength >> 2;
short int *psrc = (short int *)lpMemFile;
short int *pSample = (short int *)pIns->pSample;
for (UINT j=0; j<len; j++)
{
pSample[j*2] = (short int)(bswapLE16(psrc[0]) + iadd);
pSample[j*2+1] = (short int)(bswapLE16(psrc[1]) + iadd);
psrc += 2;
}
len *= 4;
}
break;
// AMS compressed samples
case RS_AMS8:
case RS_AMS16:
len = 9;
if (dwMemLength > 9)
{
const char *psrc = lpMemFile;
char packcharacter = lpMemFile[8], *pdest = (char *)pIns->pSample;
len += bswapLE32(*((LPDWORD)(lpMemFile+4)));
if (len > dwMemLength) len = dwMemLength;
UINT dmax = pIns->nLength;
if (pIns->uFlags & CHN_16BIT) dmax <<= 1;
AMSUnpack(psrc+9, len-9, pdest, dmax, packcharacter);
}
break;
// PTM 8bit delta to 16-bit sample
case RS_PTM8DTO16:
{
len = pIns->nLength * 2;
if (len > dwMemLength) break;
signed char *pSample = (signed char *)pIns->pSample;
signed char delta8 = 0;
for (UINT j=0; j<len; j++)
{
delta8 += lpMemFile[j];
*pSample++ = delta8;
}
WORD *pSampleW = (WORD *)pIns->pSample;
for (UINT j=0; j<len; j+=2) // swaparoni!
{
WORD s = bswapLE16(*pSampleW);
*pSampleW++ = s;
}
}
break;
// Huffman MDL compressed samples
case RS_MDL8:
case RS_MDL16:
len = dwMemLength;
if (len >= 4)
{
LPBYTE pSample = (LPBYTE)pIns->pSample;
LPBYTE ibuf = (LPBYTE)lpMemFile;
DWORD bitbuf = bswapLE32(*((DWORD *)ibuf));
UINT bitnum = 32;
BYTE dlt = 0, lowbyte = 0;
ibuf += 4;
for (UINT j=0; j<pIns->nLength; j++)
{
BYTE hibyte;
BYTE sign;
if (nFlags == RS_MDL16) lowbyte = (BYTE)MDLReadBits(bitbuf, bitnum, ibuf, 8);
sign = (BYTE)MDLReadBits(bitbuf, bitnum, ibuf, 1);
if (MDLReadBits(bitbuf, bitnum, ibuf, 1))
{
hibyte = (BYTE)MDLReadBits(bitbuf, bitnum, ibuf, 3);
} else
{
hibyte = 8;
while (!MDLReadBits(bitbuf, bitnum, ibuf, 1)) hibyte += 0x10;
hibyte += MDLReadBits(bitbuf, bitnum, ibuf, 4);
}
if (sign) hibyte = ~hibyte;
dlt += hibyte;
if (nFlags != RS_MDL16)
pSample[j] = dlt;
else
{
pSample[j<<1] = lowbyte;
pSample[(j<<1)+1] = dlt;
}
}
}
break;
case RS_DMF8:
case RS_DMF16:
len = dwMemLength;
if (len >= 4)
{
UINT maxlen = pIns->nLength;
if (pIns->uFlags & CHN_16BIT) maxlen <<= 1;
LPBYTE ibuf = (LPBYTE)lpMemFile, ibufmax = (LPBYTE)(lpMemFile+dwMemLength);
len = DMFUnpack((LPBYTE)pIns->pSample, ibuf, ibufmax, maxlen);
}
break;
#ifdef MODPLUG_TRACKER
// PCM 24-bit signed -> load sample, and normalize it to 16-bit
case RS_PCM24S:
case RS_PCM32S:
len = pIns->nLength * 3;
if (nFlags == RS_PCM32S) len += pIns->nLength;
if (len > dwMemLength) break;
if (len > 4*8)
{
UINT slsize = (nFlags == RS_PCM32S) ? 4 : 3;
LPBYTE pSrc = (LPBYTE)lpMemFile;
LONG max = 255;
if (nFlags == RS_PCM32S) pSrc++;
for (UINT j=0; j<len; j+=slsize)
{
LONG l = ((((pSrc[j+2] << 8) + pSrc[j+1]) << 8) + pSrc[j]) << 8;
l /= 256;
if (l > max) max = l;
if (-l > max) max = -l;
}
max = (max / 128) + 1;
signed short *pDest = (signed short *)pIns->pSample;
for (UINT k=0; k<len; k+=slsize)
{
LONG l = ((((pSrc[k+2] << 8) + pSrc[k+1]) << 8) + pSrc[k]) << 8;
*pDest++ = (signed short)(l / max);
}
}
break;
// Stereo PCM 24-bit signed -> load sample, and normalize it to 16-bit
case RS_STIPCM24S:
case RS_STIPCM32S:
len = pIns->nLength * 6;
if (nFlags == RS_STIPCM32S) len += pIns->nLength * 2;
if (len > dwMemLength) break;
if (len > 8*8)
{
UINT slsize = (nFlags == RS_STIPCM32S) ? 4 : 3;
LPBYTE pSrc = (LPBYTE)lpMemFile;
LONG max = 255;
if (nFlags == RS_STIPCM32S) pSrc++;
for (UINT j=0; j<len; j+=slsize)
{
LONG l = ((((pSrc[j+2] << 8) + pSrc[j+1]) << 8) + pSrc[j]) << 8;
l /= 256;
if (l > max) max = l;
if (-l > max) max = -l;
}
max = (max / 128) + 1;
signed short *pDest = (signed short *)pIns->pSample;
for (UINT k=0; k<len; k+=slsize)
{
LONG lr = ((((pSrc[k+2] << 8) + pSrc[k+1]) << 8) + pSrc[k]) << 8;
k += slsize;
LONG ll = ((((pSrc[k+2] << 8) + pSrc[k+1]) << 8) + pSrc[k]) << 8;
pDest[0] = (signed short)ll;
pDest[1] = (signed short)lr;
pDest += 2;
}
}
break;
// 16-bit signed big endian interleaved stereo
case RS_STIPCM16M:
{
len = pIns->nLength;
if (len*4 > dwMemLength) len = dwMemLength >> 2;
LPCBYTE psrc = (LPCBYTE)lpMemFile;
short int *pSample = (short int *)pIns->pSample;
for (UINT j=0; j<len; j++)
{
pSample[j*2] = (signed short)(((UINT)psrc[0] << 8) | (psrc[1]));
pSample[j*2+1] = (signed short)(((UINT)psrc[2] << 8) | (psrc[3]));
psrc += 4;
}
len *= 4;
}
break;
#endif // MODPLUG_TRACKER
#endif // !FASTSOUNDLIB
#endif // !MODPLUG_BASIC_SUPPORT
// Default: 8-bit signed PCM data
default:
len = pIns->nLength;
if (len > dwMemLength) len = pIns->nLength = dwMemLength;
memcpy(pIns->pSample, lpMemFile, len);
}
if (len > dwMemLength)
{
if (pIns->pSample)
{
pIns->nLength = 0;
FreeSample(pIns->pSample);
pIns->pSample = NULL;
}
return 0;
}
AdjustSampleLoop(pIns);
return len;
}
void CSoundFile::AdjustSampleLoop(MODINSTRUMENT *pIns)
//----------------------------------------------------
{
if (!pIns->pSample) return;
if (pIns->nLoopEnd > pIns->nLength) pIns->nLoopEnd = pIns->nLength;
if (pIns->nLoopStart+2 >= pIns->nLoopEnd)
{
pIns->nLoopStart = pIns->nLoopEnd = 0;
pIns->uFlags &= ~CHN_LOOP;
}
UINT len = pIns->nLength;
if (pIns->uFlags & CHN_16BIT)
{
short int *pSample = (short int *)pIns->pSample;
// Adjust end of sample
if (pIns->uFlags & CHN_STEREO)
{
pSample[len*2+6] = pSample[len*2+4] = pSample[len*2+2] = pSample[len*2] = pSample[len*2-2];
pSample[len*2+7] = pSample[len*2+5] = pSample[len*2+3] = pSample[len*2+1] = pSample[len*2-1];
} else
{
pSample[len+4] = pSample[len+3] = pSample[len+2] = pSample[len+1] = pSample[len] = pSample[len-1];
}
if ((pIns->uFlags & (CHN_LOOP|CHN_PINGPONGLOOP|CHN_STEREO)) == CHN_LOOP)
{
// Fix bad loops
if ((pIns->nLoopEnd+3 >= pIns->nLength) || (m_nType & MOD_TYPE_S3M))
{
pSample[pIns->nLoopEnd] = pSample[pIns->nLoopStart];
pSample[pIns->nLoopEnd+1] = pSample[pIns->nLoopStart+1];
pSample[pIns->nLoopEnd+2] = pSample[pIns->nLoopStart+2];
pSample[pIns->nLoopEnd+3] = pSample[pIns->nLoopStart+3];
pSample[pIns->nLoopEnd+4] = pSample[pIns->nLoopStart+4];
}
}
} else
{
signed char *pSample = pIns->pSample;
#ifndef FASTSOUNDLIB
// Crappy samples (except chiptunes) ?
if ((pIns->nLength > 0x100) && (m_nType & (MOD_TYPE_MOD|MOD_TYPE_S3M))
&& (!(pIns->uFlags & CHN_STEREO)))
{
int smpend = pSample[pIns->nLength-1], smpfix = 0, kscan;
for (kscan=pIns->nLength-1; kscan>0; kscan--)
{
smpfix = pSample[kscan-1];
if (smpfix != smpend) break;
}
int delta = smpfix - smpend;
if (((!(pIns->uFlags & CHN_LOOP)) || (kscan > (int)pIns->nLoopEnd))
&& ((delta < -8) || (delta > 8)))
{
while (kscan<(int)pIns->nLength)
{
if (!(kscan & 7))
{
if (smpfix > 0) smpfix--;
if (smpfix < 0) smpfix++;
}
pSample[kscan] = (signed char)smpfix;
kscan++;
}
}
}
#endif
// Adjust end of sample
if (pIns->uFlags & CHN_STEREO)
{
pSample[len*2+6] = pSample[len*2+4] = pSample[len*2+2] = pSample[len*2] = pSample[len*2-2];
pSample[len*2+7] = pSample[len*2+5] = pSample[len*2+3] = pSample[len*2+1] = pSample[len*2-1];
} else
{
pSample[len+4] = pSample[len+3] = pSample[len+2] = pSample[len+1] = pSample[len] = pSample[len-1];
}
if ((pIns->uFlags & (CHN_LOOP|CHN_PINGPONGLOOP|CHN_STEREO)) == CHN_LOOP)
{
if ((pIns->nLoopEnd+3 >= pIns->nLength) || (m_nType & (MOD_TYPE_MOD|MOD_TYPE_S3M)))
{
pSample[pIns->nLoopEnd] = pSample[pIns->nLoopStart];
pSample[pIns->nLoopEnd+1] = pSample[pIns->nLoopStart+1];
pSample[pIns->nLoopEnd+2] = pSample[pIns->nLoopStart+2];
pSample[pIns->nLoopEnd+3] = pSample[pIns->nLoopStart+3];
pSample[pIns->nLoopEnd+4] = pSample[pIns->nLoopStart+4];
}
}
}
}
/////////////////////////////////////////////////////////////
// Transpose <-> Frequency conversions
// returns 8363*2^((transp*128+ftune)/(12*128))
DWORD CSoundFile::TransposeToFrequency(int transp, int ftune)
//-----------------------------------------------------------
{
//---GCCFIX: Removed assembly.
return (DWORD)(8363*pow(2.0, (transp*128+ftune)/(1536)));
#ifdef MSC_VER
const float _fbase = 8363;
const float _factor = 1.0f/(12.0f*128.0f);
int result;
DWORD freq;
transp = (transp << 7) + ftune;
_asm {
fild transp
fld _factor
fmulp st(1), st(0)
fist result
fisub result
f2xm1
fild result
fld _fbase
fscale
fstp st(1)
fmul st(1), st(0)
faddp st(1), st(0)
fistp freq
}
UINT derr = freq % 11025;
if (derr <= 8) freq -= derr;
if (derr >= 11015) freq += 11025-derr;
derr = freq % 1000;
if (derr <= 5) freq -= derr;
if (derr >= 995) freq += 1000-derr;
return freq;
#endif
}
// returns 12*128*log2(freq/8363)
int CSoundFile::FrequencyToTranspose(DWORD freq)
//----------------------------------------------
{
//---GCCFIX: Removed assembly.
return int(1536*(log(freq/8363.0)/log(2.0)));
#ifdef MSC_VER
const float _f1_8363 = 1.0f / 8363.0f;
const float _factor = 128 * 12;
LONG result;
if (!freq) return 0;
_asm {
fld _factor
fild freq
fld _f1_8363
fmulp st(1), st(0)
fyl2x
fistp result
}
return result;
#endif
}
void CSoundFile::FrequencyToTranspose(MODINSTRUMENT *psmp)
//--------------------------------------------------------
{
int f2t = FrequencyToTranspose(psmp->nC4Speed);
int transp = f2t >> 7;
int ftune = f2t & 0x7F;
if (ftune > 80)
{
transp++;
ftune -= 128;
}
if (transp > 127) transp = 127;
if (transp < -127) transp = -127;
psmp->RelativeTone = transp;
psmp->nFineTune = ftune;
}
void CSoundFile::CheckCPUUsage(UINT nCPU)
//---------------------------------------
{
if (nCPU > 100) nCPU = 100;
gnCPUUsage = nCPU;
if (nCPU < 90)
{
m_dwSongFlags &= ~SONG_CPUVERYHIGH;
} else
if ((m_dwSongFlags & SONG_CPUVERYHIGH) && (nCPU >= 94))
{
UINT i=MAX_CHANNELS;
while (i >= 8)
{
i--;
if (Chn[i].nLength)
{
Chn[i].nLength = Chn[i].nPos = 0;
nCPU -= 2;
if (nCPU < 94) break;
}
}
} else
if (nCPU > 90)
{
m_dwSongFlags |= SONG_CPUVERYHIGH;
}
}
BOOL CSoundFile::SetPatternName(UINT nPat, LPCSTR lpszName)
//---------------------------------------------------------
{
char szName[MAX_PATTERNNAME] = ""; // changed from CHAR
if (nPat >= MAX_PATTERNS) return FALSE;
if (lpszName) lstrcpyn(szName, lpszName, MAX_PATTERNNAME);
szName[MAX_PATTERNNAME-1] = 0;
if (!m_lpszPatternNames) m_nPatternNames = 0;
if (nPat >= m_nPatternNames)
{
if (!lpszName[0]) return TRUE;
UINT len = (nPat+1)*MAX_PATTERNNAME;
char *p = new char[len]; // changed from CHAR
if (!p) return FALSE;
memset(p, 0, len);
if (m_lpszPatternNames)
{
memcpy(p, m_lpszPatternNames, m_nPatternNames * MAX_PATTERNNAME);
delete m_lpszPatternNames;
m_lpszPatternNames = NULL;
}
m_lpszPatternNames = p;
m_nPatternNames = nPat + 1;
}
memcpy(m_lpszPatternNames + nPat * MAX_PATTERNNAME, szName, MAX_PATTERNNAME);
return TRUE;
}
BOOL CSoundFile::GetPatternName(UINT nPat, LPSTR lpszName, UINT cbSize) const
//---------------------------------------------------------------------------
{
if ((!lpszName) || (!cbSize)) return FALSE;
lpszName[0] = 0;
if (cbSize > MAX_PATTERNNAME) cbSize = MAX_PATTERNNAME;
if ((m_lpszPatternNames) && (nPat < m_nPatternNames))
{
memcpy(lpszName, m_lpszPatternNames + nPat * MAX_PATTERNNAME, cbSize);
lpszName[cbSize-1] = 0;
return TRUE;
}
return FALSE;
}
#ifndef FASTSOUNDLIB
UINT CSoundFile::DetectUnusedSamples(BOOL *pbIns)
//-----------------------------------------------
{
UINT nExt = 0;
if (!pbIns) return 0;
if (m_nInstruments)
{
memset(pbIns, 0, MAX_SAMPLES * sizeof(BOOL));
for (UINT ipat=0; ipat<MAX_PATTERNS; ipat++)
{
MODCOMMAND *p = Patterns[ipat];
if (p)
{
UINT jmax = PatternSize[ipat] * m_nChannels;
for (UINT j=0; j<jmax; j++, p++)
{
if ((p->note) && (p->note <= 120))
{
if ((p->instr) && (p->instr < MAX_INSTRUMENTS))
{
INSTRUMENTHEADER *penv = Headers[p->instr];
if (penv)
{
UINT n = penv->Keyboard[p->note-1];
if (n < MAX_SAMPLES) pbIns[n] = TRUE;
}
} else
{
for (UINT k=1; k<=m_nInstruments; k++)
{
INSTRUMENTHEADER *penv = Headers[k];
if (penv)
{
UINT n = penv->Keyboard[p->note-1];
if (n < MAX_SAMPLES) pbIns[n] = TRUE;
}
}
}
}
}
}
}
for (UINT ichk=1; ichk<=m_nSamples; ichk++)
{
if ((!pbIns[ichk]) && (Ins[ichk].pSample)) nExt++;
}
}
return nExt;
}
BOOL CSoundFile::RemoveSelectedSamples(BOOL *pbIns)
//-------------------------------------------------
{
if (!pbIns) return FALSE;
for (UINT j=1; j<MAX_SAMPLES; j++)
{
if ((!pbIns[j]) && (Ins[j].pSample))
{
DestroySample(j);
if ((j == m_nSamples) && (j > 1)) m_nSamples--;
}
}
return TRUE;
}
BOOL CSoundFile::DestroySample(UINT nSample)
//------------------------------------------
{
if ((!nSample) || (nSample >= MAX_SAMPLES)) return FALSE;
if (!Ins[nSample].pSample) return TRUE;
MODINSTRUMENT *pins = &Ins[nSample];
signed char *pSample = pins->pSample;
pins->pSample = NULL;
pins->nLength = 0;
pins->uFlags &= ~(CHN_16BIT);
for (UINT i=0; i<MAX_CHANNELS; i++)
{
if (Chn[i].pSample == pSample)
{
Chn[i].nPos = Chn[i].nLength = 0;
Chn[i].pSample = Chn[i].pCurrentSample = NULL;
}
}
FreeSample(pSample);
return TRUE;
}
#endif // FASTSOUNDLIB
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