diff options
Diffstat (limited to 'gst/modplug/libmodplug/sndmix.cpp')
| -rw-r--r-- | gst/modplug/libmodplug/sndmix.cpp | 1249 |
1 files changed, 0 insertions, 1249 deletions
diff --git a/gst/modplug/libmodplug/sndmix.cpp b/gst/modplug/libmodplug/sndmix.cpp deleted file mode 100644 index e50909432..000000000 --- a/gst/modplug/libmodplug/sndmix.cpp +++ /dev/null @@ -1,1249 +0,0 @@ -/* - * This source code is public domain. - * - * Authors: Olivier Lapicque <olivierl@jps.net> -*/ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "stdafx.h" -#include "sndfile.h" - -#ifdef MODPLUG_TRACKER -#define ENABLE_STEREOVU -#endif - -// Volume ramp length, in 1/10 ms -#define VOLUMERAMPLEN 146 // 1.46ms = 64 samples at 44.1kHz - -// VU-Meter -#define VUMETER_DECAY 4 - -// SNDMIX: These are global flags for playback control -UINT CSoundFile::m_nStereoSeparation = 128; -LONG CSoundFile::m_nStreamVolume = 0x8000; -UINT CSoundFile::m_nMaxMixChannels = 32; -// Mixing Configuration (SetWaveConfig) -DWORD CSoundFile::gdwSysInfo = 0; -DWORD CSoundFile::gnChannels = 1; -DWORD CSoundFile::gdwSoundSetup = 0; -DWORD CSoundFile::gdwMixingFreq = 44100; -DWORD CSoundFile::gnBitsPerSample = 16; -// Mixing data initialized in -UINT CSoundFile::gnAGC = AGC_UNITY; -UINT CSoundFile::gnVolumeRampSamples = 64; -UINT CSoundFile::gnVUMeter = 0; -UINT CSoundFile::gnCPUUsage = 0; -LPSNDMIXHOOKPROC CSoundFile::gpSndMixHook = NULL; -PMIXPLUGINCREATEPROC CSoundFile::gpMixPluginCreateProc = NULL; -LONG gnDryROfsVol = 0; -LONG gnDryLOfsVol = 0; -LONG gnRvbROfsVol = 0; -LONG gnRvbLOfsVol = 0; -int gbInitPlugins = 0; - -typedef DWORD (MPPASMCALL * LPCONVERTPROC)(LPVOID, int *, DWORD, LPLONG, LPLONG); - -extern DWORD MPPASMCALL X86_Convert32To8(LPVOID lpBuffer, int *, DWORD nSamples, LPLONG, LPLONG); -extern DWORD MPPASMCALL X86_Convert32To16(LPVOID lpBuffer, int *, DWORD nSamples, LPLONG, LPLONG); -extern DWORD MPPASMCALL X86_Convert32To24(LPVOID lpBuffer, int *, DWORD nSamples, LPLONG, LPLONG); -extern DWORD MPPASMCALL X86_Convert32To32(LPVOID lpBuffer, int *, DWORD nSamples, LPLONG, LPLONG); -extern UINT MPPASMCALL X86_AGC(int *pBuffer, UINT nSamples, UINT nAGC); -extern VOID MPPASMCALL X86_Dither(int *pBuffer, UINT nSamples, UINT nBits); -extern VOID MPPASMCALL X86_InterleaveFrontRear(int *pFrontBuf, int *pRearBuf, DWORD nSamples); -extern VOID MPPASMCALL X86_StereoFill(int *pBuffer, UINT nSamples, LPLONG lpROfs, LPLONG lpLOfs); -extern VOID MPPASMCALL X86_MonoFromStereo(int *pMixBuf, UINT nSamples); - -extern short int ModSinusTable[64]; -extern short int ModRampDownTable[64]; -extern short int ModSquareTable[64]; -extern short int ModRandomTable[64]; -extern DWORD LinearSlideUpTable[256]; -extern DWORD LinearSlideDownTable[256]; -extern DWORD FineLinearSlideUpTable[16]; -extern DWORD FineLinearSlideDownTable[16]; -extern signed char ft2VibratoTable[256]; // -64 .. +64 -extern int MixSoundBuffer[MIXBUFFERSIZE*4]; -extern int MixRearBuffer[MIXBUFFERSIZE*2]; -UINT gnReverbSend; - - -// Log tables for pre-amp -// We don't want the tracker to get too loud -const UINT PreAmpTable[16] = -{ - 0x60, 0x60, 0x60, 0x70, // 0-7 - 0x80, 0x88, 0x90, 0x98, // 8-15 - 0xA0, 0xA4, 0xA8, 0xB0, // 16-23 - 0xB4, 0xB8, 0xBC, 0xC0, // 24-31 -}; - -const UINT PreAmpAGCTable[16] = -{ - 0x60, 0x60, 0x60, 0x60, - 0x68, 0x70, 0x78, 0x80, - 0x84, 0x88, 0x8C, 0x90, - 0x94, 0x98, 0x9C, 0xA0, -}; - - -// Return (a*b)/c - no divide error -int _muldiv(long a, long b, long c) -{ -#ifdef MSC_VER - int sign, result; - _asm { - mov eax, a - mov ebx, b - or eax, eax - mov edx, eax - jge aneg - neg eax -aneg: - xor edx, ebx - or ebx, ebx - mov ecx, c - jge bneg - neg ebx -bneg: - xor edx, ecx - or ecx, ecx - mov sign, edx - jge cneg - neg ecx -cneg: - mul ebx - cmp edx, ecx - jae diverr - div ecx - jmp ok -diverr: - mov eax, 0x7fffffff -ok: - mov edx, sign - or edx, edx - jge rneg - neg eax -rneg: - mov result, eax - } - return result; -#else - return ((unsigned long long) a * (unsigned long long) b ) / c; -#endif -} - - -// Return (a*b+c/2)/c - no divide error -int _muldivr(long a, long b, long c) -{ -#ifdef MSC_VER - int sign, result; - _asm { - mov eax, a - mov ebx, b - or eax, eax - mov edx, eax - jge aneg - neg eax -aneg: - xor edx, ebx - or ebx, ebx - mov ecx, c - jge bneg - neg ebx -bneg: - xor edx, ecx - or ecx, ecx - mov sign, edx - jge cneg - neg ecx -cneg: - mul ebx - mov ebx, ecx - shr ebx, 1 - add eax, ebx - adc edx, 0 - cmp edx, ecx - jae diverr - div ecx - jmp ok -diverr: - mov eax, 0x7fffffff -ok: - mov edx, sign - or edx, edx - jge rneg - neg eax -rneg: - mov result, eax - } - return result; -#else - return ((unsigned long long) a * (unsigned long long) b + (c >> 1)) / c; -#endif -} - - -BOOL CSoundFile::InitPlayer(BOOL bReset) -//-------------------------------------- -{ - if (m_nMaxMixChannels > MAX_CHANNELS) m_nMaxMixChannels = MAX_CHANNELS; - if (gdwMixingFreq < 4000) gdwMixingFreq = 4000; - if (gdwMixingFreq > MAX_SAMPLE_RATE) gdwMixingFreq = MAX_SAMPLE_RATE; - gnVolumeRampSamples = (gdwMixingFreq * VOLUMERAMPLEN) / 100000; - if (gnVolumeRampSamples < 8) gnVolumeRampSamples = 8; - gnDryROfsVol = gnDryLOfsVol = 0; - gnRvbROfsVol = gnRvbLOfsVol = 0; - if (bReset) - { - gnVUMeter = 0; - gnCPUUsage = 0; - } - gbInitPlugins = (bReset) ? 3 : 1; - InitializeDSP(bReset); - return TRUE; -} - - -BOOL CSoundFile::FadeSong(UINT msec) -//---------------------------------- -{ - LONG nsamples = _muldiv(msec, gdwMixingFreq, 1000); - if (nsamples <= 0) return FALSE; - if (nsamples > 0x100000) nsamples = 0x100000; - m_nBufferCount = nsamples; - LONG nRampLength = m_nBufferCount; - // Ramp everything down - for (UINT noff=0; noff < m_nMixChannels; noff++) - { - MODCHANNEL *pramp = &Chn[ChnMix[noff]]; - if (!pramp) continue; - pramp->nNewLeftVol = pramp->nNewRightVol = 0; - pramp->nRightRamp = (-pramp->nRightVol << VOLUMERAMPPRECISION) / nRampLength; - pramp->nLeftRamp = (-pramp->nLeftVol << VOLUMERAMPPRECISION) / nRampLength; - pramp->nRampRightVol = pramp->nRightVol << VOLUMERAMPPRECISION; - pramp->nRampLeftVol = pramp->nLeftVol << VOLUMERAMPPRECISION; - pramp->nRampLength = nRampLength; - pramp->dwFlags |= CHN_VOLUMERAMP; - } - m_dwSongFlags |= SONG_FADINGSONG; - return TRUE; -} - - -BOOL CSoundFile::GlobalFadeSong(UINT msec) -//---------------------------------------- -{ - if (m_dwSongFlags & SONG_GLOBALFADE) return FALSE; - m_nGlobalFadeMaxSamples = _muldiv(msec, gdwMixingFreq, 1000); - m_nGlobalFadeSamples = m_nGlobalFadeMaxSamples; - m_dwSongFlags |= SONG_GLOBALFADE; - return TRUE; -} - - -UINT CSoundFile::Read(LPVOID lpDestBuffer, UINT cbBuffer) -//------------------------------------------------------- -{ - LPBYTE lpBuffer = (LPBYTE)lpDestBuffer; - LPCONVERTPROC pCvt = X86_Convert32To8; - UINT lRead, lMax, lSampleSize, lCount, lSampleCount, nStat=0; - LONG nVUMeterMin = 0x7FFFFFFF, nVUMeterMax = -0x7FFFFFFF; - UINT nMaxPlugins; - - { - nMaxPlugins = MAX_MIXPLUGINS; - while ((nMaxPlugins > 0) && (!m_MixPlugins[nMaxPlugins-1].pMixPlugin)) nMaxPlugins--; - } - m_nMixStat = 0; - lSampleSize = gnChannels; - if (gnBitsPerSample == 16) { lSampleSize *= 2; pCvt = X86_Convert32To16; } -#ifndef FASTSOUNDLIB - else if (gnBitsPerSample == 24) { lSampleSize *= 3; pCvt = X86_Convert32To24; } - else if (gnBitsPerSample == 32) { lSampleSize *= 4; pCvt = X86_Convert32To32; } -#endif - lMax = cbBuffer / lSampleSize; - if ((!lMax) || (!lpBuffer) || (!m_nChannels)) return 0; - lRead = lMax; - if (m_dwSongFlags & SONG_ENDREACHED) goto MixDone; - while (lRead > 0) - { - // Update Channel Data - if (!m_nBufferCount) - { -#ifndef FASTSOUNDLIB - if (m_dwSongFlags & SONG_FADINGSONG) - { - m_dwSongFlags |= SONG_ENDREACHED; - m_nBufferCount = lRead; - } else -#endif - if (!ReadNote()) - { -#ifndef FASTSOUNDLIB - if (!FadeSong(FADESONGDELAY)) -#endif - { - m_dwSongFlags |= SONG_ENDREACHED; - if (lRead == lMax) goto MixDone; - m_nBufferCount = lRead; - } - } - } - lCount = m_nBufferCount; - if (lCount > MIXBUFFERSIZE) lCount = MIXBUFFERSIZE; - if (lCount > lRead) lCount = lRead; - if (!lCount) break; - lSampleCount = lCount; -#ifndef NO_REVERB - gnReverbSend = 0; -#endif - // Resetting sound buffer - X86_StereoFill(MixSoundBuffer, lSampleCount, &gnDryROfsVol, &gnDryLOfsVol); - if (gnChannels >= 2) - { - lSampleCount *= 2; - m_nMixStat += CreateStereoMix(lCount); - ProcessStereoDSP(lCount); - } else - { - m_nMixStat += CreateStereoMix(lCount); - if (nMaxPlugins) ProcessPlugins(lCount); - ProcessStereoDSP(lCount); - X86_MonoFromStereo(MixSoundBuffer, lCount); - } - nStat++; -#ifndef NO_AGC - // Automatic Gain Control - if (gdwSoundSetup & SNDMIX_AGC) ProcessAGC(lSampleCount); -#endif - UINT lTotalSampleCount = lSampleCount; -#ifndef FASTSOUNDLIB - // Multichannel - if (gnChannels > 2) - { - X86_InterleaveFrontRear(MixSoundBuffer, MixRearBuffer, lSampleCount); - lTotalSampleCount *= 2; - } - // Hook Function - if (gpSndMixHook) - { - gpSndMixHook(MixSoundBuffer, lTotalSampleCount, gnChannels); - } -#endif - // Perform clipping + VU-Meter - lpBuffer += pCvt(lpBuffer, MixSoundBuffer, lTotalSampleCount, &nVUMeterMin, &nVUMeterMax); - // Buffer ready - lRead -= lCount; - m_nBufferCount -= lCount; - } -MixDone: - if (lRead) memset(lpBuffer, (gnBitsPerSample == 8) ? 0x80 : 0, lRead * lSampleSize); - // VU-Meter - nVUMeterMin >>= (24-MIXING_ATTENUATION); - nVUMeterMax >>= (24-MIXING_ATTENUATION); - if (nVUMeterMax < nVUMeterMin) nVUMeterMax = nVUMeterMin; - if ((gnVUMeter = (UINT)(nVUMeterMax - nVUMeterMin)) > 0xFF) gnVUMeter = 0xFF; - if (nStat) { m_nMixStat += nStat-1; m_nMixStat /= nStat; } - return lMax - lRead; -} - - - -///////////////////////////////////////////////////////////////////////////// -// Handles navigation/effects - -BOOL CSoundFile::ProcessRow() -//--------------------------- -{ - if (++m_nTickCount >= m_nMusicSpeed * (m_nPatternDelay+1) + m_nFrameDelay) - { - m_nPatternDelay = 0; - m_nFrameDelay = 0; - m_nTickCount = 0; - m_nRow = m_nNextRow; - // Reset Pattern Loop Effect - if (m_nCurrentPattern != m_nNextPattern) m_nCurrentPattern = m_nNextPattern; - // Check if pattern is valid - if (!(m_dwSongFlags & SONG_PATTERNLOOP)) - { - m_nPattern = (m_nCurrentPattern < MAX_ORDERS) ? Order[m_nCurrentPattern] : 0xFF; - if ((m_nPattern < MAX_PATTERNS) && (!Patterns[m_nPattern])) m_nPattern = 0xFE; - while (m_nPattern >= MAX_PATTERNS) - { - // End of song ? - if ((m_nPattern == 0xFF) || (m_nCurrentPattern >= MAX_ORDERS)) - { - //if (!m_nRepeatCount) - return FALSE; //never repeat entire song - if (!m_nRestartPos) - { - m_nMusicSpeed = m_nDefaultSpeed; - m_nMusicTempo = m_nDefaultTempo; - m_nGlobalVolume = m_nDefaultGlobalVolume; - for (UINT i=0; i<MAX_CHANNELS; i++) - { - Chn[i].dwFlags |= CHN_NOTEFADE | CHN_KEYOFF; - Chn[i].nFadeOutVol = 0; - if (i < m_nChannels) - { - Chn[i].nGlobalVol = ChnSettings[i].nVolume; - Chn[i].nVolume = ChnSettings[i].nVolume; - Chn[i].nPan = ChnSettings[i].nPan; - Chn[i].nPanSwing = Chn[i].nVolSwing = 0; - Chn[i].nOldVolParam = 0; - Chn[i].nOldOffset = 0; - Chn[i].nOldHiOffset = 0; - Chn[i].nPortamentoDest = 0; - if (!Chn[i].nLength) - { - Chn[i].dwFlags = ChnSettings[i].dwFlags; - Chn[i].nLoopStart = 0; - Chn[i].nLoopEnd = 0; - Chn[i].pHeader = NULL; - Chn[i].pSample = NULL; - Chn[i].pInstrument = NULL; - } - } - } - } -// if (m_nRepeatCount > 0) m_nRepeatCount--; - m_nCurrentPattern = m_nRestartPos; - m_nRow = 0; - if ((Order[m_nCurrentPattern] >= MAX_PATTERNS) || (!Patterns[Order[m_nCurrentPattern]])) return FALSE; - } else - { - m_nCurrentPattern++; - } - m_nPattern = (m_nCurrentPattern < MAX_ORDERS) ? Order[m_nCurrentPattern] : 0xFF; - if ((m_nPattern < MAX_PATTERNS) && (!Patterns[m_nPattern])) m_nPattern = 0xFE; - } - m_nNextPattern = m_nCurrentPattern; - } - // Weird stuff? - if ((m_nPattern >= MAX_PATTERNS) || (!Patterns[m_nPattern])) return FALSE; - // Should never happen - if (m_nRow >= PatternSize[m_nPattern]) m_nRow = 0; - m_nNextRow = m_nRow + 1; - if (m_nNextRow >= PatternSize[m_nPattern]) - { - if (!(m_dwSongFlags & SONG_PATTERNLOOP)) m_nNextPattern = m_nCurrentPattern + 1; - m_nNextRow = 0; - } - // Reset channel values - MODCHANNEL *pChn = Chn; - MODCOMMAND *m = Patterns[m_nPattern] + m_nRow * m_nChannels; - for (UINT nChn=0; nChn<m_nChannels; pChn++, nChn++, m++) - { - pChn->nRowNote = m->note; - pChn->nRowInstr = m->instr; - pChn->nRowVolCmd = m->volcmd; - pChn->nRowVolume = m->vol; - pChn->nRowCommand = m->command; - pChn->nRowParam = m->param; - - pChn->nLeftVol = pChn->nNewLeftVol; - pChn->nRightVol = pChn->nNewRightVol; - pChn->dwFlags &= ~(CHN_PORTAMENTO | CHN_VIBRATO | CHN_TREMOLO | CHN_PANBRELLO); - pChn->nCommand = 0; - } - } - // Should we process tick0 effects? - if (!m_nMusicSpeed) m_nMusicSpeed = 1; - m_dwSongFlags |= SONG_FIRSTTICK; - if (m_nTickCount) - { - m_dwSongFlags &= ~SONG_FIRSTTICK; - if ((!(m_nType & MOD_TYPE_XM)) && (m_nTickCount < m_nMusicSpeed * (1 + m_nPatternDelay))) - { - if (!(m_nTickCount % m_nMusicSpeed)) m_dwSongFlags |= SONG_FIRSTTICK; - } - - } - // Update Effects - return ProcessEffects(); -} - - -//////////////////////////////////////////////////////////////////////////////////////////// -// Handles envelopes & mixer setup - -BOOL CSoundFile::ReadNote() -//------------------------- -{ - if (!ProcessRow()) return FALSE; - //////////////////////////////////////////////////////////////////////////////////// - m_nTotalCount++; - if (!m_nMusicTempo) return FALSE; - m_nBufferCount = (gdwMixingFreq * 5 * m_nTempoFactor) / (m_nMusicTempo << 8); - // Master Volume + Pre-Amplification / Attenuation setup - DWORD nMasterVol; - { - int nchn32 = (m_nChannels < 32) ? m_nChannels : 31; - if ((m_nType & MOD_TYPE_IT) && (m_nInstruments) && (nchn32 < 6)) nchn32 = 6; - int realmastervol = m_nMasterVolume; - if (realmastervol > 0x80) - { - realmastervol = 0x80 + ((realmastervol - 0x80) * (nchn32+4)) / 16; - } - UINT attenuation = (gdwSoundSetup & SNDMIX_AGC) ? PreAmpAGCTable[nchn32>>1] : PreAmpTable[nchn32>>1]; - DWORD mastervol = (realmastervol * (m_nSongPreAmp + 0x10)) >> 6; - if (mastervol > 0x200) mastervol = 0x200; - if ((m_dwSongFlags & SONG_GLOBALFADE) && (m_nGlobalFadeMaxSamples)) - { - mastervol = _muldiv(mastervol, m_nGlobalFadeSamples, m_nGlobalFadeMaxSamples); - } - nMasterVol = (mastervol << 7) / attenuation; - if (nMasterVol > 0x180) nMasterVol = 0x180; - } - //////////////////////////////////////////////////////////////////////////////////// - // Update channels data - m_nMixChannels = 0; - MODCHANNEL *pChn = Chn; - for (UINT nChn=0; nChn<MAX_CHANNELS; nChn++,pChn++) - { - if ((pChn->dwFlags & CHN_NOTEFADE) && (!(pChn->nFadeOutVol|pChn->nRightVol|pChn->nLeftVol))) - { - pChn->nLength = 0; - pChn->nROfs = pChn->nLOfs = 0; - } - // Check for unused channel - if ((pChn->dwFlags & CHN_MUTE) || ((nChn >= m_nChannels) && (!pChn->nLength))) - { - pChn->nVUMeter = 0; -#ifdef ENABLE_STEREOVU - pChn->nLeftVU = pChn->nRightVU = 0; -#endif - continue; - } - // Reset channel data - pChn->nInc = 0; - pChn->nRealVolume = 0; - pChn->nRealPan = pChn->nPan + pChn->nPanSwing; - if (pChn->nRealPan < 0) pChn->nRealPan = 0; - if (pChn->nRealPan > 256) pChn->nRealPan = 256; - pChn->nRampLength = 0; - // Calc Frequency - if ((pChn->nPeriod) && (pChn->nLength)) - { - int vol = pChn->nVolume + pChn->nVolSwing; - - if (vol < 0) vol = 0; - if (vol > 256) vol = 256; - // Tremolo - if (pChn->dwFlags & CHN_TREMOLO) - { - UINT trempos = pChn->nTremoloPos & 0x3F; - if (vol > 0) - { - int tremattn = (m_nType & MOD_TYPE_XM) ? 5 : 6; - switch (pChn->nTremoloType & 0x03) - { - case 1: - vol += (ModRampDownTable[trempos] * (int)pChn->nTremoloDepth) >> tremattn; - break; - case 2: - vol += (ModSquareTable[trempos] * (int)pChn->nTremoloDepth) >> tremattn; - break; - case 3: - vol += (ModRandomTable[trempos] * (int)pChn->nTremoloDepth) >> tremattn; - break; - default: - vol += (ModSinusTable[trempos] * (int)pChn->nTremoloDepth) >> tremattn; - } - } - if ((m_nTickCount) || ((m_nType & (MOD_TYPE_STM|MOD_TYPE_S3M|MOD_TYPE_IT)) && (!(m_dwSongFlags & SONG_ITOLDEFFECTS)))) - { - pChn->nTremoloPos = (trempos + pChn->nTremoloSpeed) & 0x3F; - } - } - // Tremor - if (pChn->nCommand == CMD_TREMOR) - { - UINT n = (pChn->nTremorParam >> 4) + (pChn->nTremorParam & 0x0F); - UINT ontime = pChn->nTremorParam >> 4; - if ((!(m_nType & MOD_TYPE_IT)) || (m_dwSongFlags & SONG_ITOLDEFFECTS)) { n += 2; ontime++; } - UINT tremcount = (UINT)pChn->nTremorCount; - if (tremcount >= n) tremcount = 0; - if ((m_nTickCount) || (m_nType & (MOD_TYPE_S3M|MOD_TYPE_IT))) - { - if (tremcount >= ontime) vol = 0; - pChn->nTremorCount = (BYTE)(tremcount + 1); - } - pChn->dwFlags |= CHN_FASTVOLRAMP; - } - // Clip volume - if (vol < 0) vol = 0; - if (vol > 0x100) vol = 0x100; - vol <<= 6; - // Process Envelopes - if (pChn->pHeader) - { - INSTRUMENTHEADER *penv = pChn->pHeader; - // Volume Envelope - if ((pChn->dwFlags & CHN_VOLENV) && (penv->nVolEnv)) - { - int envpos = pChn->nVolEnvPosition; - UINT pt = penv->nVolEnv - 1; - for (UINT i=0; i<(UINT)(penv->nVolEnv-1); i++) - { - if (envpos <= penv->VolPoints[i]) - { - pt = i; - break; - } - } - int x2 = penv->VolPoints[pt]; - int x1, envvol; - if (envpos >= x2) - { - envvol = penv->VolEnv[pt] << 2; - x1 = x2; - } else - if (pt) - { - envvol = penv->VolEnv[pt-1] << 2; - x1 = penv->VolPoints[pt-1]; - } else - { - envvol = 0; - x1 = 0; - } - if (envpos > x2) envpos = x2; - if ((x2 > x1) && (envpos > x1)) - { - envvol += ((envpos - x1) * (((int)penv->VolEnv[pt]<<2) - envvol)) / (x2 - x1); - } - if (envvol < 0) envvol = 0; - if (envvol > 256) envvol = 256; - vol = (vol * envvol) >> 8; - } - // Panning Envelope - if ((pChn->dwFlags & CHN_PANENV) && (penv->nPanEnv)) - { - int envpos = pChn->nPanEnvPosition; - UINT pt = penv->nPanEnv - 1; - for (UINT i=0; i<(UINT)(penv->nPanEnv-1); i++) - { - if (envpos <= penv->PanPoints[i]) - { - pt = i; - break; - } - } - int x2 = penv->PanPoints[pt], y2 = penv->PanEnv[pt]; - int x1, envpan; - if (envpos >= x2) - { - envpan = y2; - x1 = x2; - } else - if (pt) - { - envpan = penv->PanEnv[pt-1]; - x1 = penv->PanPoints[pt-1]; - } else - { - envpan = 128; - x1 = 0; - } - if ((x2 > x1) && (envpos > x1)) - { - envpan += ((envpos - x1) * (y2 - envpan)) / (x2 - x1); - } - if (envpan < 0) envpan = 0; - if (envpan > 64) envpan = 64; - int pan = pChn->nPan; - if (pan >= 128) - { - pan += ((envpan - 32) * (256 - pan)) / 32; - } else - { - pan += ((envpan - 32) * (pan)) / 32; - } - if (pan < 0) pan = 0; - if (pan > 256) pan = 256; - pChn->nRealPan = pan; - } - // FadeOut volume - if (pChn->dwFlags & CHN_NOTEFADE) - { - UINT fadeout = penv->nFadeOut; - if (fadeout) - { - pChn->nFadeOutVol -= fadeout << 1; - if (pChn->nFadeOutVol <= 0) pChn->nFadeOutVol = 0; - vol = (vol * pChn->nFadeOutVol) >> 16; - } else - if (!pChn->nFadeOutVol) - { - vol = 0; - } - } - // Pitch/Pan separation - if ((penv->nPPS) && (pChn->nRealPan) && (pChn->nNote)) - { - int pandelta = (int)pChn->nRealPan + (int)((int)(pChn->nNote - penv->nPPC - 1) * (int)penv->nPPS) / (int)8; - if (pandelta < 0) pandelta = 0; - if (pandelta > 256) pandelta = 256; - pChn->nRealPan = pandelta; - } - } else - { - // No Envelope: key off => note cut - if (pChn->dwFlags & CHN_NOTEFADE) // 1.41-: CHN_KEYOFF|CHN_NOTEFADE - { - pChn->nFadeOutVol = 0; - vol = 0; - } - } - // vol is 14-bits - if (vol) - { - // IMPORTANT: pChn->nRealVolume is 14 bits !!! - // -> _muldiv( 14+8, 6+6, 18); => RealVolume: 14-bit result (22+12-20) - pChn->nRealVolume = _muldiv(vol * m_nGlobalVolume, pChn->nGlobalVol * pChn->nInsVol, 1 << 20); - } - if (pChn->nPeriod < m_nMinPeriod) pChn->nPeriod = m_nMinPeriod; - int period = pChn->nPeriod; - if ((pChn->dwFlags & (CHN_GLISSANDO|CHN_PORTAMENTO)) == (CHN_GLISSANDO|CHN_PORTAMENTO)) - { - period = GetPeriodFromNote(GetNoteFromPeriod(period), pChn->nFineTune, pChn->nC4Speed); - } - - // Arpeggio ? - if (pChn->nCommand == CMD_ARPEGGIO) - { - switch(m_nTickCount % 3) - { - case 1: period = GetPeriodFromNote(pChn->nNote + (pChn->nArpeggio >> 4), pChn->nFineTune, pChn->nC4Speed); break; - case 2: period = GetPeriodFromNote(pChn->nNote + (pChn->nArpeggio & 0x0F), pChn->nFineTune, pChn->nC4Speed); break; - } - } - - if (m_dwSongFlags & SONG_AMIGALIMITS) - { - if (period < 113*4) period = 113*4; - if (period > 856*4) period = 856*4; - } - - // Pitch/Filter Envelope - if ((pChn->pHeader) && (pChn->dwFlags & CHN_PITCHENV) && (pChn->pHeader->nPitchEnv)) - { - INSTRUMENTHEADER *penv = pChn->pHeader; - int envpos = pChn->nPitchEnvPosition; - UINT pt = penv->nPitchEnv - 1; - for (UINT i=0; i<(UINT)(penv->nPitchEnv-1); i++) - { - if (envpos <= penv->PitchPoints[i]) - { - pt = i; - break; - } - } - int x2 = penv->PitchPoints[pt]; - int x1, envpitch; - if (envpos >= x2) - { - envpitch = (((int)penv->PitchEnv[pt]) - 32) * 8; - x1 = x2; - } else - if (pt) - { - envpitch = (((int)penv->PitchEnv[pt-1]) - 32) * 8; - x1 = penv->PitchPoints[pt-1]; - } else - { - envpitch = 0; - x1 = 0; - } - if (envpos > x2) envpos = x2; - if ((x2 > x1) && (envpos > x1)) - { - int envpitchdest = (((int)penv->PitchEnv[pt]) - 32) * 8; - envpitch += ((envpos - x1) * (envpitchdest - envpitch)) / (x2 - x1); - } - if (envpitch < -256) envpitch = -256; - if (envpitch > 256) envpitch = 256; - // Filter Envelope: controls cutoff frequency - if (penv->dwFlags & ENV_FILTER) - { -#ifndef NO_FILTER - SetupChannelFilter(pChn, (pChn->dwFlags & CHN_FILTER) ? FALSE : TRUE, envpitch); -#endif // NO_FILTER - } else - // Pitch Envelope - { - int l = envpitch; - if (l < 0) - { - l = -l; - if (l > 255) l = 255; - period = _muldiv(period, LinearSlideUpTable[l], 0x10000); - } else - { - if (l > 255) l = 255; - period = _muldiv(period, LinearSlideDownTable[l], 0x10000); - } - } - } - - // Vibrato - if (pChn->dwFlags & CHN_VIBRATO) - { - UINT vibpos = pChn->nVibratoPos; - LONG vdelta; - switch (pChn->nVibratoType & 0x03) - { - case 1: - vdelta = ModRampDownTable[vibpos]; - break; - case 2: - vdelta = ModSquareTable[vibpos]; - break; - case 3: - vdelta = ModRandomTable[vibpos]; - break; - default: - vdelta = ModSinusTable[vibpos]; - } - UINT vdepth = ((m_nType != MOD_TYPE_IT) || (m_dwSongFlags & SONG_ITOLDEFFECTS)) ? 6 : 7; - vdelta = (vdelta * (int)pChn->nVibratoDepth) >> vdepth; - if ((m_dwSongFlags & SONG_LINEARSLIDES) && (m_nType & MOD_TYPE_IT)) - { - LONG l = vdelta; - if (l < 0) - { - l = -l; - vdelta = _muldiv(period, LinearSlideDownTable[l >> 2], 0x10000) - period; - if (l & 0x03) vdelta += _muldiv(period, FineLinearSlideDownTable[l & 0x03], 0x10000) - period; - - } else - { - vdelta = _muldiv(period, LinearSlideUpTable[l >> 2], 0x10000) - period; - if (l & 0x03) vdelta += _muldiv(period, FineLinearSlideUpTable[l & 0x03], 0x10000) - period; - - } - } - period += vdelta; - if ((m_nTickCount) || ((m_nType & MOD_TYPE_IT) && (!(m_dwSongFlags & SONG_ITOLDEFFECTS)))) - { - pChn->nVibratoPos = (vibpos + pChn->nVibratoSpeed) & 0x3F; - } - } - // Panbrello - if (pChn->dwFlags & CHN_PANBRELLO) - { - UINT panpos = ((pChn->nPanbrelloPos+0x10) >> 2) & 0x3F; - LONG pdelta; - switch (pChn->nPanbrelloType & 0x03) - { - case 1: - pdelta = ModRampDownTable[panpos]; - break; - case 2: - pdelta = ModSquareTable[panpos]; - break; - case 3: - pdelta = ModRandomTable[panpos]; - break; - default: - pdelta = ModSinusTable[panpos]; - } - pChn->nPanbrelloPos += pChn->nPanbrelloSpeed; - pdelta = ((pdelta * (int)pChn->nPanbrelloDepth) + 2) >> 3; - pdelta += pChn->nRealPan; - if (pdelta < 0) pdelta = 0; - if (pdelta > 256) pdelta = 256; - pChn->nRealPan = pdelta; - } - int nPeriodFrac = 0; - // Instrument Auto-Vibrato - if ((pChn->pInstrument) && (pChn->pInstrument->nVibDepth)) - { - MODINSTRUMENT *pins = pChn->pInstrument; - if (pins->nVibSweep == 0) - { - pChn->nAutoVibDepth = pins->nVibDepth << 8; - } else - { - if (m_nType & MOD_TYPE_IT) - { - pChn->nAutoVibDepth += pins->nVibSweep << 3; - } else - if (!(pChn->dwFlags & CHN_KEYOFF)) - { - pChn->nAutoVibDepth += (pins->nVibDepth << 8) / pins->nVibSweep; - } - if ((pChn->nAutoVibDepth >> 8) > pins->nVibDepth) - pChn->nAutoVibDepth = pins->nVibDepth << 8; - } - pChn->nAutoVibPos += pins->nVibRate; - int val; - switch(pins->nVibType) - { - case 4: // Random - val = ModRandomTable[pChn->nAutoVibPos & 0x3F]; - pChn->nAutoVibPos++; - break; - case 3: // Ramp Down - val = ((0x40 - (pChn->nAutoVibPos >> 1)) & 0x7F) - 0x40; - break; - case 2: // Ramp Up - val = ((0x40 + (pChn->nAutoVibPos >> 1)) & 0x7f) - 0x40; - break; - case 1: // Square - val = (pChn->nAutoVibPos & 128) ? +64 : -64; - break; - default: // Sine - val = ft2VibratoTable[pChn->nAutoVibPos & 255]; - } - int n = ((val * pChn->nAutoVibDepth) >> 8); - if (m_nType & MOD_TYPE_IT) - { - int df1, df2; - if (n < 0) - { - n = -n; - UINT n1 = n >> 8; - df1 = LinearSlideUpTable[n1]; - df2 = LinearSlideUpTable[n1+1]; - } else - { - UINT n1 = n >> 8; - df1 = LinearSlideDownTable[n1]; - df2 = LinearSlideDownTable[n1+1]; - } - n >>= 2; - period = _muldiv(period, df1 + ((df2-df1)*(n&0x3F)>>6), 256); - nPeriodFrac = period & 0xFF; - period >>= 8; - } else - { - period += (n >> 6); - } - } - // Final Period - if (period <= m_nMinPeriod) - { - if (m_nType & MOD_TYPE_S3M) pChn->nLength = 0; - period = m_nMinPeriod; - } - if (period > m_nMaxPeriod) - { - if ((m_nType & MOD_TYPE_IT) || (period >= 0x100000)) - { - pChn->nFadeOutVol = 0; - pChn->dwFlags |= CHN_NOTEFADE; - pChn->nRealVolume = 0; - } - period = m_nMaxPeriod; - nPeriodFrac = 0; - } - UINT freq = GetFreqFromPeriod(period, pChn->nC4Speed, nPeriodFrac); - if ((m_nType & MOD_TYPE_IT) && (freq < 256)) - { - pChn->nFadeOutVol = 0; - pChn->dwFlags |= CHN_NOTEFADE; - pChn->nRealVolume = 0; - } - UINT ninc = _muldiv(freq, 0x10000, gdwMixingFreq); - if ((ninc >= 0xFFB0) && (ninc <= 0x10090)) ninc = 0x10000; - if (m_nFreqFactor != 128) ninc = (ninc * m_nFreqFactor) >> 7; - if (ninc > 0xFF0000) ninc = 0xFF0000; - pChn->nInc = (ninc+1) & ~3; - } - - // Increment envelope position - if (pChn->pHeader) - { - INSTRUMENTHEADER *penv = pChn->pHeader; - // Volume Envelope - if (pChn->dwFlags & CHN_VOLENV) - { - // Increase position - pChn->nVolEnvPosition++; - // Volume Loop ? - if (penv->dwFlags & ENV_VOLLOOP) - { - UINT volloopend = penv->VolPoints[penv->nVolLoopEnd]; - if (m_nType != MOD_TYPE_XM) volloopend++; - if (pChn->nVolEnvPosition == volloopend) - { - pChn->nVolEnvPosition = penv->VolPoints[penv->nVolLoopStart]; - if ((penv->nVolLoopEnd == penv->nVolLoopStart) && (!penv->VolEnv[penv->nVolLoopStart]) - && ((!(m_nType & MOD_TYPE_XM)) || (penv->nVolLoopEnd+1 == penv->nVolEnv))) - { - pChn->dwFlags |= CHN_NOTEFADE; - pChn->nFadeOutVol = 0; - } - } - } - // Volume Sustain ? - if ((penv->dwFlags & ENV_VOLSUSTAIN) && (!(pChn->dwFlags & CHN_KEYOFF))) - { - if (pChn->nVolEnvPosition == (UINT)penv->VolPoints[penv->nVolSustainEnd]+1) - pChn->nVolEnvPosition = penv->VolPoints[penv->nVolSustainBegin]; - } else - // End of Envelope ? - if (pChn->nVolEnvPosition > penv->VolPoints[penv->nVolEnv - 1]) - { - if ((m_nType & MOD_TYPE_IT) || (pChn->dwFlags & CHN_KEYOFF)) pChn->dwFlags |= CHN_NOTEFADE; - pChn->nVolEnvPosition = penv->VolPoints[penv->nVolEnv - 1]; - if ((!penv->VolEnv[penv->nVolEnv-1]) && ((nChn >= m_nChannels) || (m_nType & MOD_TYPE_IT))) - { - pChn->dwFlags |= CHN_NOTEFADE; - pChn->nFadeOutVol = 0; - - pChn->nRealVolume = 0; - } - } - } - // Panning Envelope - if (pChn->dwFlags & CHN_PANENV) - { - pChn->nPanEnvPosition++; - if (penv->dwFlags & ENV_PANLOOP) - { - UINT panloopend = penv->PanPoints[penv->nPanLoopEnd]; - if (m_nType != MOD_TYPE_XM) panloopend++; - if (pChn->nPanEnvPosition == panloopend) - pChn->nPanEnvPosition = penv->PanPoints[penv->nPanLoopStart]; - } - // Panning Sustain ? - if ((penv->dwFlags & ENV_PANSUSTAIN) && (pChn->nPanEnvPosition == (UINT)penv->PanPoints[penv->nPanSustainEnd]+1) - && (!(pChn->dwFlags & CHN_KEYOFF))) - { - // Panning sustained - pChn->nPanEnvPosition = penv->PanPoints[penv->nPanSustainBegin]; - } else - { - if (pChn->nPanEnvPosition > penv->PanPoints[penv->nPanEnv - 1]) - pChn->nPanEnvPosition = penv->PanPoints[penv->nPanEnv - 1]; - } - } - // Pitch Envelope - if (pChn->dwFlags & CHN_PITCHENV) - { - // Increase position - pChn->nPitchEnvPosition++; - // Pitch Loop ? - if (penv->dwFlags & ENV_PITCHLOOP) - { - if (pChn->nPitchEnvPosition >= penv->PitchPoints[penv->nPitchLoopEnd]) - pChn->nPitchEnvPosition = penv->PitchPoints[penv->nPitchLoopStart]; - } - // Pitch Sustain ? - if ((penv->dwFlags & ENV_PITCHSUSTAIN) && (!(pChn->dwFlags & CHN_KEYOFF))) - { - if (pChn->nPitchEnvPosition == (UINT)penv->PitchPoints[penv->nPitchSustainEnd]+1) - pChn->nPitchEnvPosition = penv->PitchPoints[penv->nPitchSustainBegin]; - } else - { - if (pChn->nPitchEnvPosition > penv->PitchPoints[penv->nPitchEnv - 1]) - pChn->nPitchEnvPosition = penv->PitchPoints[penv->nPitchEnv - 1]; - } - } - } -#ifdef MODPLUG_PLAYER - // Limit CPU -> > 80% -> don't ramp - if ((gnCPUUsage >= 80) && (!pChn->nRealVolume)) - { - pChn->nLeftVol = pChn->nRightVol = 0; - } -#endif // MODPLUG_PLAYER - // Volume ramping - pChn->dwFlags &= ~CHN_VOLUMERAMP; - if ((pChn->nRealVolume) || (pChn->nLeftVol) || (pChn->nRightVol)) - pChn->dwFlags |= CHN_VOLUMERAMP; -#ifdef MODPLUG_PLAYER - // Decrease VU-Meter - if (pChn->nVUMeter > VUMETER_DECAY) pChn->nVUMeter -= VUMETER_DECAY; else pChn->nVUMeter = 0; -#endif // MODPLUG_PLAYER -#ifdef ENABLE_STEREOVU - if (pChn->nLeftVU > VUMETER_DECAY) pChn->nLeftVU -= VUMETER_DECAY; else pChn->nLeftVU = 0; - if (pChn->nRightVU > VUMETER_DECAY) pChn->nRightVU -= VUMETER_DECAY; else pChn->nRightVU = 0; -#endif - // Check for too big nInc - if (((pChn->nInc >> 16) + 1) >= (LONG)(pChn->nLoopEnd - pChn->nLoopStart)) pChn->dwFlags &= ~CHN_LOOP; - pChn->nNewRightVol = pChn->nNewLeftVol = 0; - pChn->pCurrentSample = ((pChn->pSample) && (pChn->nLength) && (pChn->nInc)) ? pChn->pSample : NULL; - if (pChn->pCurrentSample) - { - // Update VU-Meter (nRealVolume is 14-bit) -#ifdef MODPLUG_PLAYER - UINT vutmp = pChn->nRealVolume >> (14 - 8); - if (vutmp > 0xFF) vutmp = 0xFF; - if (pChn->nVUMeter >= 0x100) pChn->nVUMeter = vutmp; - vutmp >>= 1; - if (pChn->nVUMeter < vutmp) pChn->nVUMeter = vutmp; -#endif // MODPLUG_PLAYER -#ifdef ENABLE_STEREOVU - UINT vul = (pChn->nRealVolume * pChn->nRealPan) >> 14; - if (vul > 127) vul = 127; - if (pChn->nLeftVU > 127) pChn->nLeftVU = (BYTE)vul; - vul >>= 1; - if (pChn->nLeftVU < vul) pChn->nLeftVU = (BYTE)vul; - UINT vur = (pChn->nRealVolume * (256-pChn->nRealPan)) >> 14; - if (vur > 127) vur = 127; - if (pChn->nRightVU > 127) pChn->nRightVU = (BYTE)vur; - vur >>= 1; - if (pChn->nRightVU < vur) pChn->nRightVU = (BYTE)vur; -#endif -#ifdef MODPLUG_TRACKER - UINT kChnMasterVol = (pChn->dwFlags & CHN_EXTRALOUD) ? 0x100 : nMasterVol; -#else -#define kChnMasterVol nMasterVol -#endif // MODPLUG_TRACKER - // Adjusting volumes - if (gnChannels >= 2) - { - int pan = ((int)pChn->nRealPan) - 128; - pan *= (int)m_nStereoSeparation; - pan /= 128; - pan += 128; - - if (pan < 0) pan = 0; - if (pan > 256) pan = 256; -#ifndef FASTSOUNDLIB - if (gdwSoundSetup & SNDMIX_REVERSESTEREO) pan = 256 - pan; -#endif - LONG realvol = (pChn->nRealVolume * kChnMasterVol) >> (8-1); - if (gdwSoundSetup & SNDMIX_SOFTPANNING) - { - if (pan < 128) - { - pChn->nNewLeftVol = (realvol * pan) >> 8; - pChn->nNewRightVol = (realvol * 128) >> 8; - } else - { - pChn->nNewLeftVol = (realvol * 128) >> 8; - pChn->nNewRightVol = (realvol * (256 - pan)) >> 8; - } - } else - { - pChn->nNewLeftVol = (realvol * pan) >> 8; - pChn->nNewRightVol = (realvol * (256 - pan)) >> 8; - } - } else - { - pChn->nNewRightVol = (pChn->nRealVolume * kChnMasterVol) >> 8; - pChn->nNewLeftVol = pChn->nNewRightVol; - } - // Clipping volumes - if (pChn->nNewRightVol > 0xFFFF) pChn->nNewRightVol = 0xFFFF; - if (pChn->nNewLeftVol > 0xFFFF) pChn->nNewLeftVol = 0xFFFF; - // Check IDO - if (gdwSoundSetup & SNDMIX_NORESAMPLING) - { - pChn->dwFlags |= CHN_NOIDO; - } else - { - pChn->dwFlags &= ~(CHN_NOIDO|CHN_HQSRC); - if( pChn->nInc == 0x10000 ) - { pChn->dwFlags |= CHN_NOIDO; - } - else - { if( ((gdwSoundSetup & SNDMIX_HQRESAMPLER) == 0) && ((gdwSoundSetup & SNDMIX_ULTRAHQSRCMODE) == 0) ) - { if (pChn->nInc >= 0xFF00) pChn->dwFlags |= CHN_NOIDO; - } - } - } - pChn->nNewRightVol >>= MIXING_ATTENUATION; - pChn->nNewLeftVol >>= MIXING_ATTENUATION; - pChn->nRightRamp = pChn->nLeftRamp = 0; - // Dolby Pro-Logic Surround - if ((pChn->dwFlags & CHN_SURROUND) && (gnChannels <= 2)) pChn->nNewLeftVol = - pChn->nNewLeftVol; - // Checking Ping-Pong Loops - if (pChn->dwFlags & CHN_PINGPONGFLAG) pChn->nInc = -pChn->nInc; - // Setting up volume ramp - if ((pChn->dwFlags & CHN_VOLUMERAMP) - && ((pChn->nRightVol != pChn->nNewRightVol) - || (pChn->nLeftVol != pChn->nNewLeftVol))) - { - LONG nRampLength = gnVolumeRampSamples; - LONG nRightDelta = ((pChn->nNewRightVol - pChn->nRightVol) << VOLUMERAMPPRECISION); - LONG nLeftDelta = ((pChn->nNewLeftVol - pChn->nLeftVol) << VOLUMERAMPPRECISION); -#ifndef FASTSOUNDLIB - if ((gdwSoundSetup & SNDMIX_DIRECTTODISK) - || ((gdwSysInfo & (SYSMIX_ENABLEMMX|SYSMIX_FASTCPU)) - && (gdwSoundSetup & SNDMIX_HQRESAMPLER) && (gnCPUUsage <= 20))) - { - if ((pChn->nRightVol|pChn->nLeftVol) && (pChn->nNewRightVol|pChn->nNewLeftVol) && (!(pChn->dwFlags & CHN_FASTVOLRAMP))) - { - nRampLength = m_nBufferCount; - if (nRampLength > (1 << (VOLUMERAMPPRECISION-1))) nRampLength = (1 << (VOLUMERAMPPRECISION-1)); - if (nRampLength < (LONG)gnVolumeRampSamples) nRampLength = gnVolumeRampSamples; - } - } -#endif - pChn->nRightRamp = nRightDelta / nRampLength; - pChn->nLeftRamp = nLeftDelta / nRampLength; - pChn->nRightVol = pChn->nNewRightVol - ((pChn->nRightRamp * nRampLength) >> VOLUMERAMPPRECISION); - pChn->nLeftVol = pChn->nNewLeftVol - ((pChn->nLeftRamp * nRampLength) >> VOLUMERAMPPRECISION); - if (pChn->nRightRamp|pChn->nLeftRamp) - { - pChn->nRampLength = nRampLength; - } else - { - pChn->dwFlags &= ~CHN_VOLUMERAMP; - pChn->nRightVol = pChn->nNewRightVol; - pChn->nLeftVol = pChn->nNewLeftVol; - } - } else - { - pChn->dwFlags &= ~CHN_VOLUMERAMP; - pChn->nRightVol = pChn->nNewRightVol; - pChn->nLeftVol = pChn->nNewLeftVol; - } - pChn->nRampRightVol = pChn->nRightVol << VOLUMERAMPPRECISION; - pChn->nRampLeftVol = pChn->nLeftVol << VOLUMERAMPPRECISION; - // Adding the channel in the channel list - ChnMix[m_nMixChannels++] = nChn; - if (m_nMixChannels >= MAX_CHANNELS) break; - } else - { -#ifdef ENABLE_STEREOVU - // Note change but no sample - if (pChn->nLeftVU > 128) pChn->nLeftVU = 0; - if (pChn->nRightVU > 128) pChn->nRightVU = 0; -#endif - if (pChn->nVUMeter > 0xFF) pChn->nVUMeter = 0; - pChn->nLeftVol = pChn->nRightVol = 0; - pChn->nLength = 0; - } - } - // Checking Max Mix Channels reached: ordering by volume - if ((m_nMixChannels >= m_nMaxMixChannels) && (!(gdwSoundSetup & SNDMIX_DIRECTTODISK))) - { - for (UINT i=0; i<m_nMixChannels; i++) - { - UINT j=i; - while ((j+1<m_nMixChannels) && (Chn[ChnMix[j]].nRealVolume < Chn[ChnMix[j+1]].nRealVolume)) - { - UINT n = ChnMix[j]; - ChnMix[j] = ChnMix[j+1]; - ChnMix[j+1] = n; - j++; - } - } - } - if (m_dwSongFlags & SONG_GLOBALFADE) - { - if (!m_nGlobalFadeSamples) - { - m_dwSongFlags |= SONG_ENDREACHED; - return FALSE; - } - if (m_nGlobalFadeSamples > m_nBufferCount) - m_nGlobalFadeSamples -= m_nBufferCount; - else - m_nGlobalFadeSamples = 0; - } - return TRUE; -} - - |