diff options
Diffstat (limited to 'lib/libmodplug/src/load_med.cpp')
| -rw-r--r-- | lib/libmodplug/src/load_med.cpp | 924 |
1 files changed, 0 insertions, 924 deletions
diff --git a/lib/libmodplug/src/load_med.cpp b/lib/libmodplug/src/load_med.cpp deleted file mode 100644 index 0caebee30e..0000000000 --- a/lib/libmodplug/src/load_med.cpp +++ /dev/null @@ -1,924 +0,0 @@ -/* - * 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" - -//#define MED_LOG - -#ifdef MED_LOG -extern void Log(LPCSTR s, ...); -#endif - -////////////////////////////////////////////////////////// -// OctaMed MED file support (import only) - -// flags -#define MMD_FLAG_FILTERON 0x1 -#define MMD_FLAG_JUMPINGON 0x2 -#define MMD_FLAG_JUMP8TH 0x4 -#define MMD_FLAG_INSTRSATT 0x8 // instruments are attached (this is a module) -#define MMD_FLAG_VOLHEX 0x10 -#define MMD_FLAG_STSLIDE 0x20 // SoundTracker mode for slides -#define MMD_FLAG_8CHANNEL 0x40 // OctaMED 8 channel song -#define MMD_FLAG_SLOWHQ 0x80 // HQ slows playing speed (V2-V4 compatibility) -// flags2 -#define MMD_FLAG2_BMASK 0x1F -#define MMD_FLAG2_BPM 0x20 -#define MMD_FLAG2_MIX 0x80 // uses Mixing (V7+) -// flags3: -#define MMD_FLAG3_STEREO 0x1 // mixing in Stereo mode -#define MMD_FLAG3_FREEPAN 0x2 // free panning -#define MMD_FLAG3_GM 0x4 // module designed for GM/XG compatibility - - -// generic MMD tags -#define MMDTAG_END 0 -#define MMDTAG_PTR 0x80000000 // data needs relocation -#define MMDTAG_MUSTKNOW 0x40000000 // loader must fail if this isn't recognized -#define MMDTAG_MUSTWARN 0x20000000 // loader must warn if this isn't recognized - -// ExpData tags -// # of effect groups, including the global group (will -// override settings in MMDSong struct), default = 1 -#define MMDTAG_EXP_NUMFXGROUPS 1 -#define MMDTAG_TRK_NAME (MMDTAG_PTR|1) // trackinfo tags -#define MMDTAG_TRK_NAMELEN 2 // namelen includes zero term. -#define MMDTAG_TRK_FXGROUP 3 -// effectinfo tags -#define MMDTAG_FX_ECHOTYPE 1 -#define MMDTAG_FX_ECHOLEN 2 -#define MMDTAG_FX_ECHODEPTH 3 -#define MMDTAG_FX_STEREOSEP 4 -#define MMDTAG_FX_GROUPNAME (MMDTAG_PTR|5) // the Global Effects group shouldn't have name saved! -#define MMDTAG_FX_GRPNAMELEN 6 // namelen includes zero term. - -#pragma pack(1) - -typedef struct tagMEDMODULEHEADER -{ - DWORD id; // MMD1-MMD3 - DWORD modlen; // Size of file - DWORD song; // Position in file for this song - WORD psecnum; - WORD pseq; - DWORD blockarr; // Position in file for blocks - DWORD mmdflags; - DWORD smplarr; // Position in file for samples - DWORD reserved; - DWORD expdata; // Absolute offset in file for ExpData (0 if not present) - DWORD reserved2; - WORD pstate; - WORD pblock; - WORD pline; - WORD pseqnum; - WORD actplayline; - BYTE counter; - BYTE extra_songs; // # of songs - 1 -} MEDMODULEHEADER; - - -typedef struct tagMMD0SAMPLE -{ - WORD rep, replen; - BYTE midich; - BYTE midipreset; - BYTE svol; - signed char strans; -} MMD0SAMPLE; - - -// Sample header is immediately followed by sample data... -typedef struct tagMMDSAMPLEHEADER -{ - DWORD length; // length of *one* *unpacked* channel in *bytes* - WORD type; - // if non-negative - // bits 0-3 reserved for multi-octave instruments, not supported on the PC - // 0x10: 16 bit (otherwise 8 bit) - // 0x20: Stereo (otherwise mono) - // 0x40: Uses DeltaCode - // 0x80: Packed data - // -1: Synth - // -2: Hybrid - // if type indicates packed data, these fields follow, otherwise we go right to the data - WORD packtype; // Only 1 = ADPCM is supported - WORD subtype; // Packing subtype - // ADPCM subtype - // 1: g723_40 - // 2: g721 - // 3: g723_24 - BYTE commonflags; // flags common to all packtypes (none defined so far) - BYTE packerflags; // flags for the specific packtype - ULONG leftchlen; // packed length of left channel in bytes - ULONG rightchlen; // packed length of right channel in bytes (ONLY PRESENT IN STEREO SAMPLES) - BYTE SampleData[1]; // Sample Data -} MMDSAMPLEHEADER; - - -// MMD0/MMD1 song header -typedef struct tagMMD0SONGHEADER -{ - MMD0SAMPLE sample[63]; - WORD numblocks; // # of blocks - WORD songlen; // # of entries used in playseq - BYTE playseq[256]; // Play sequence - WORD deftempo; // BPM tempo - signed char playtransp; // Play transpose - BYTE flags; // 0x10: Hex Volumes | 0x20: ST/NT/PT Slides | 0x40: 8 Channels song - BYTE flags2; // [b4-b0]+1: Tempo LPB, 0x20: tempo mode, 0x80: mix_conv=on - BYTE tempo2; // tempo TPL - BYTE trkvol[16]; // track volumes - BYTE mastervol; // master volume - BYTE numsamples; // # of samples (max=63) -} MMD0SONGHEADER; - - -// MMD2/MMD3 song header -typedef struct tagMMD2SONGHEADER -{ - MMD0SAMPLE sample[63]; - WORD numblocks; // # of blocks - WORD numsections; // # of sections - DWORD playseqtable; // filepos of play sequence - DWORD sectiontable; // filepos of sections table (WORD array) - DWORD trackvols; // filepos of tracks volume (BYTE array) - WORD numtracks; // # of tracks (max 64) - WORD numpseqs; // # of play sequences - DWORD trackpans; // filepos of tracks pan values (BYTE array) - LONG flags3; // 0x1:stereo_mix, 0x2:free_panning, 0x4:GM/XG compatibility - WORD voladj; // vol_adjust (set to 100 if 0) - WORD channels; // # of channels (4 if =0) - BYTE mix_echotype; // 1:normal,2:xecho - BYTE mix_echodepth; // 1..6 - WORD mix_echolen; // > 0 - signed char mix_stereosep; // -4..4 - BYTE pad0[223]; - WORD deftempo; // BPM tempo - signed char playtransp; // play transpose - BYTE flags; // 0x1:filteron, 0x2:jumpingon, 0x4:jump8th, 0x8:instr_attached, 0x10:hex_vol, 0x20:PT_slides, 0x40:8ch_conv,0x80:hq slows playing speed - BYTE flags2; // 0x80:mix_conv=on, [b4-b0]+1:tempo LPB, 0x20:tempo_mode - BYTE tempo2; // tempo TPL - BYTE pad1[16]; - BYTE mastervol; // master volume - BYTE numsamples; // # of samples (max 63) -} MMD2SONGHEADER; - -// For MMD0 the note information is held in 3 bytes, byte0, byte1, byte2. For reference we -// number the bits in each byte 0..7, where 0 is the low bit. -// The note is held as bits 5..0 of byte0 -// The instrument is encoded in 6 bits, bits 7 and 6 of byte0 and bits 7,6,5,4 of byte1 -// The command number is bits 3,2,1,0 of byte1, command data is in byte2: -// For command 0, byte2 represents the second data byte, otherwise byte2 -// represents the first data byte. -typedef struct tagMMD0BLOCK -{ - BYTE numtracks; - BYTE lines; // File value is 1 less than actual, so 0 -> 1 line -} MMD0BLOCK; // BYTE data[lines+1][tracks][3]; - - -// For MMD1,MMD2,MMD3 the note information is carried in 4 bytes, byte0, byte1, -// byte2 and byte3 -// The note is held as byte0 (values above 0x84 are ignored) -// The instrument is held as byte1 -// The command number is held as byte2, command data is in byte3 -// For commands 0 and 0x19 byte3 represents the second data byte, -// otherwise byte2 represents the first data byte. -typedef struct tagMMD1BLOCK -{ - WORD numtracks; // Number of tracks, may be > 64, but then that data is skipped. - WORD lines; // Stored value is 1 less than actual, so 0 -> 1 line - DWORD info; // Offset of BlockInfo (if 0, no block_info is present) -} MMD1BLOCK; - - -typedef struct tagMMD1BLOCKINFO -{ - DWORD hlmask; // Unimplemented - ignore - DWORD blockname; // file offset of block name - DWORD blocknamelen; // length of block name (including term. 0) - DWORD pagetable; // file offset of command page table - DWORD cmdexttable; // file offset of command extension table - DWORD reserved[4]; // future expansion -} MMD1BLOCKINFO; - - -// A set of play sequences is stored as an array of ULONG files offsets -// Each offset points to the play sequence itself. -typedef struct tagMMD2PLAYSEQ -{ - CHAR name[32]; - DWORD command_offs; // filepos of command table - DWORD reserved; - WORD length; - WORD seq[512]; // skip if > 0x8000 -} MMD2PLAYSEQ; - - -// A command table contains commands that effect a particular play sequence -// entry. The only commands read in are STOP or POSJUMP, all others are ignored -// POSJUMP is presumed to have extra bytes containing a WORD for the position -typedef struct tagMMDCOMMAND -{ - WORD offset; // Offset within current sequence entry - BYTE cmdnumber; // STOP (537) or POSJUMP (538) (others skipped) - BYTE extra_count; - BYTE extra_bytes[4];// [extra_count]; -} MMDCOMMAND; // Last entry has offset == 0xFFFF, cmd_number == 0 and 0 extrabytes - - -typedef struct tagMMD0EXP -{ - DWORD nextmod; // File offset of next Hdr - DWORD exp_smp; // Pointer to extra instrument data - WORD s_ext_entries; // Number of extra instrument entries - WORD s_ext_entrsz; // Size of extra instrument data - DWORD annotxt; - DWORD annolen; - DWORD iinfo; // Instrument names - WORD i_ext_entries; - WORD i_ext_entrsz; - DWORD jumpmask; - DWORD rgbtable; - BYTE channelsplit[4]; // Only used if 8ch_conv (extra channel for every nonzero entry) - DWORD n_info; - DWORD songname; // Song name - DWORD songnamelen; - DWORD dumps; - DWORD mmdinfo; - DWORD mmdrexx; - DWORD mmdcmd3x; - DWORD trackinfo_ofs; // ptr to song->numtracks ptrs to tag lists - DWORD effectinfo_ofs; // ptr to group ptrs - DWORD tag_end; -} MMD0EXP; - -#pragma pack() - - - -static void MedConvert(MODCOMMAND *p, const MMD0SONGHEADER *pmsh) -//--------------------------------------------------------------- -{ - const BYTE bpmvals[9] = { 179,164,152,141,131,123,116,110,104}; - - UINT command = p->command; - UINT param = p->param; - switch(command) - { - case 0x00: if (param) command = CMD_ARPEGGIO; else command = 0; break; - case 0x01: command = CMD_PORTAMENTOUP; break; - case 0x02: command = CMD_PORTAMENTODOWN; break; - case 0x03: command = CMD_TONEPORTAMENTO; break; - case 0x04: command = CMD_VIBRATO; break; - case 0x05: command = CMD_TONEPORTAVOL; break; - case 0x06: command = CMD_VIBRATOVOL; break; - case 0x07: command = CMD_TREMOLO; break; - case 0x0A: if (param & 0xF0) param &= 0xF0; command = CMD_VOLUMESLIDE; if (!param) command = 0; break; - case 0x0B: command = CMD_POSITIONJUMP; break; - case 0x0C: command = CMD_VOLUME; - if (pmsh->flags & MMD_FLAG_VOLHEX) - { - if (param < 0x80) - { - param = (param+1) / 2; - } else command = 0; - } else - { - if (param <= 0x99) - { - param = (param >> 4)*10+((param & 0x0F) % 10); - if (param > 64) param = 64; - } else command = 0; - } - break; - case 0x09: command = (param < 0x20) ? CMD_SPEED : CMD_TEMPO; break; - case 0x0D: if (param & 0xF0) param &= 0xF0; command = CMD_VOLUMESLIDE; if (!param) command = 0; break; - case 0x0F: // Set Tempo / Special - // F.00 = Pattern Break - if (!param) command = CMD_PATTERNBREAK; else - // F.01 - F.F0: Set tempo/speed - if (param <= 0xF0) - { - if (pmsh->flags & MMD_FLAG_8CHANNEL) - { - param = (param > 10) ? 99 : bpmvals[param-1]; - } else - // F.01 - F.0A: Set Speed - if (param <= 0x0A) - { - command = CMD_SPEED; - } else - // Old tempo - if (!(pmsh->flags2 & MMD_FLAG2_BPM)) - { - param = _muldiv(param, 5*715909, 2*474326); - } - // F.0B - F.F0: Set Tempo (assumes LPB=4) - if (param > 0x0A) - { - command = CMD_TEMPO; - if (param < 0x21) param = 0x21; - if (param > 240) param = 240; - } - } else - switch(param) - { - // F.F1: Retrig 2x - case 0xF1: - command = CMD_MODCMDEX; - param = 0x93; - break; - // F.F2: Note Delay 2x - case 0xF2: - command = CMD_MODCMDEX; - param = 0xD3; - break; - // F.F3: Retrig 3x - case 0xF3: - command = CMD_MODCMDEX; - param = 0x92; - break; - // F.F4: Note Delay 1/3 - case 0xF4: - command = CMD_MODCMDEX; - param = 0xD2; - break; - // F.F5: Note Delay 2/3 - case 0xF5: - command = CMD_MODCMDEX; - param = 0xD4; - break; - // F.F8: Filter Off - case 0xF8: - command = CMD_MODCMDEX; - param = 0x00; - break; - // F.F9: Filter On - case 0xF9: - command = CMD_MODCMDEX; - param = 0x01; - break; - // F.FD: Very fast tone-portamento - case 0xFD: - command = CMD_TONEPORTAMENTO; - param = 0xFF; - break; - // F.FE: End Song - case 0xFE: - command = CMD_SPEED; - param = 0; - break; - // F.FF: Note Cut - case 0xFF: - command = CMD_MODCMDEX; - param = 0xC0; - break; - default: -#ifdef MED_LOG - Log("Unknown Fxx command: cmd=0x%02X param=0x%02X\n", command, param); -#endif - param = command = 0; - } - break; - // 11.0x: Fine Slide Up - case 0x11: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0x10; - break; - // 12.0x: Fine Slide Down - case 0x12: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0x20; - break; - // 14.xx: Vibrato - case 0x14: - command = CMD_VIBRATO; - break; - // 15.xx: FineTune - case 0x15: - command = CMD_MODCMDEX; - param &= 0x0F; - param |= 0x50; - break; - // 16.xx: Pattern Loop - case 0x16: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0x60; - break; - // 18.xx: Note Cut - case 0x18: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0xC0; - break; - // 19.xx: Sample Offset - case 0x19: - command = CMD_OFFSET; - break; - // 1A.0x: Fine Volume Up - case 0x1A: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0xA0; - break; - // 1B.0x: Fine Volume Down - case 0x1B: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0xB0; - break; - // 1D.xx: Pattern Break - case 0x1D: - command = CMD_PATTERNBREAK; - break; - // 1E.0x: Pattern Delay - case 0x1E: - command = CMD_MODCMDEX; - if (param > 0x0F) param = 0x0F; - param |= 0xE0; - break; - // 1F.xy: Retrig - case 0x1F: - command = CMD_RETRIG; - param &= 0x0F; - break; - // 2E.xx: set panning - case 0x2E: - command = CMD_MODCMDEX; - param = ((param + 0x10) & 0xFF) >> 1; - if (param > 0x0F) param = 0x0F; - param |= 0x80; - break; - default: -#ifdef MED_LOG - // 0x2E ? - Log("Unknown command: cmd=0x%02X param=0x%02X\n", command, param); -#endif - command = param = 0; - } - p->command = command; - p->param = param; -} - - -BOOL CSoundFile::ReadMed(const BYTE *lpStream, DWORD dwMemLength) -//--------------------------------------------------------------- -{ - const MEDMODULEHEADER *pmmh; - const MMD0SONGHEADER *pmsh; - const MMD2SONGHEADER *pmsh2; - const MMD0EXP *pmex; - DWORD dwBlockArr, dwSmplArr, dwExpData, wNumBlocks; - LPDWORD pdwTable; - CHAR version; - UINT deftempo; - int playtransp = 0; - - if ((!lpStream) || (dwMemLength < 0x200)) return FALSE; - pmmh = (MEDMODULEHEADER *)lpStream; - if (((pmmh->id & 0x00FFFFFF) != 0x444D4D) || (!pmmh->song)) return FALSE; - // Check for 'MMDx' - DWORD dwSong = bswapBE32(pmmh->song); - if ((dwSong >= dwMemLength) || (dwSong + sizeof(MMD0SONGHEADER) >= dwMemLength)) return FALSE; - version = (signed char)((pmmh->id >> 24) & 0xFF); - if ((version < '0') || (version > '3')) return FALSE; -#ifdef MED_LOG - Log("\nLoading MMD%c module (flags=0x%02X)...\n", version, bswapBE32(pmmh->mmdflags)); - Log(" modlen = %d\n", bswapBE32(pmmh->modlen)); - Log(" song = 0x%08X\n", bswapBE32(pmmh->song)); - Log(" psecnum = %d\n", bswapBE16(pmmh->psecnum)); - Log(" pseq = %d\n", bswapBE16(pmmh->pseq)); - Log(" blockarr = 0x%08X\n", bswapBE32(pmmh->blockarr)); - Log(" mmdflags = 0x%08X\n", bswapBE32(pmmh->mmdflags)); - Log(" smplarr = 0x%08X\n", bswapBE32(pmmh->smplarr)); - Log(" reserved = 0x%08X\n", bswapBE32(pmmh->reserved)); - Log(" expdata = 0x%08X\n", bswapBE32(pmmh->expdata)); - Log(" reserved2= 0x%08X\n", bswapBE32(pmmh->reserved2)); - Log(" pstate = %d\n", bswapBE16(pmmh->pstate)); - Log(" pblock = %d\n", bswapBE16(pmmh->pblock)); - Log(" pline = %d\n", bswapBE16(pmmh->pline)); - Log(" pseqnum = %d\n", bswapBE16(pmmh->pseqnum)); - Log(" actplayline=%d\n", bswapBE16(pmmh->actplayline)); - Log(" counter = %d\n", pmmh->counter); - Log(" extra_songs = %d\n", pmmh->extra_songs); - Log("\n"); -#endif - m_nType = MOD_TYPE_MED; - m_nSongPreAmp = 0x20; - dwBlockArr = bswapBE32(pmmh->blockarr); - dwSmplArr = bswapBE32(pmmh->smplarr); - dwExpData = bswapBE32(pmmh->expdata); - if ((dwExpData) && (dwExpData+sizeof(MMD0EXP) < dwMemLength)) - pmex = (MMD0EXP *)(lpStream+dwExpData); - else - pmex = NULL; - pmsh = (MMD0SONGHEADER *)(lpStream + dwSong); - pmsh2 = (MMD2SONGHEADER *)pmsh; -#ifdef MED_LOG - if (version < '2') - { - Log("MMD0 Header:\n"); - Log(" numblocks = %d\n", bswapBE16(pmsh->numblocks)); - Log(" songlen = %d\n", bswapBE16(pmsh->songlen)); - Log(" playseq = "); - for (UINT idbg1=0; idbg1<16; idbg1++) Log("%2d, ", pmsh->playseq[idbg1]); - Log("...\n"); - Log(" deftempo = 0x%04X\n", bswapBE16(pmsh->deftempo)); - Log(" playtransp = %d\n", (signed char)pmsh->playtransp); - Log(" flags(1,2) = 0x%02X, 0x%02X\n", pmsh->flags, pmsh->flags2); - Log(" tempo2 = %d\n", pmsh->tempo2); - Log(" trkvol = "); - for (UINT idbg2=0; idbg2<16; idbg2++) Log("0x%02X, ", pmsh->trkvol[idbg2]); - Log("...\n"); - Log(" mastervol = 0x%02X\n", pmsh->mastervol); - Log(" numsamples = %d\n", pmsh->numsamples); - } else - { - Log("MMD2 Header:\n"); - Log(" numblocks = %d\n", bswapBE16(pmsh2->numblocks)); - Log(" numsections= %d\n", bswapBE16(pmsh2->numsections)); - Log(" playseqptr = 0x%04X\n", bswapBE32(pmsh2->playseqtable)); - Log(" sectionptr = 0x%04X\n", bswapBE32(pmsh2->sectiontable)); - Log(" trackvols = 0x%04X\n", bswapBE32(pmsh2->trackvols)); - Log(" numtracks = %d\n", bswapBE16(pmsh2->numtracks)); - Log(" numpseqs = %d\n", bswapBE16(pmsh2->numpseqs)); - Log(" trackpans = 0x%04X\n", bswapBE32(pmsh2->trackpans)); - Log(" flags3 = 0x%08X\n", bswapBE32(pmsh2->flags3)); - Log(" voladj = %d\n", bswapBE16(pmsh2->voladj)); - Log(" channels = %d\n", bswapBE16(pmsh2->channels)); - Log(" echotype = %d\n", pmsh2->mix_echotype); - Log(" echodepth = %d\n", pmsh2->mix_echodepth); - Log(" echolen = %d\n", bswapBE16(pmsh2->mix_echolen)); - Log(" stereosep = %d\n", (signed char)pmsh2->mix_stereosep); - Log(" deftempo = 0x%04X\n", bswapBE16(pmsh2->deftempo)); - Log(" playtransp = %d\n", (signed char)pmsh2->playtransp); - Log(" flags(1,2) = 0x%02X, 0x%02X\n", pmsh2->flags, pmsh2->flags2); - Log(" tempo2 = %d\n", pmsh2->tempo2); - Log(" mastervol = 0x%02X\n", pmsh2->mastervol); - Log(" numsamples = %d\n", pmsh->numsamples); - } - Log("\n"); -#endif - wNumBlocks = bswapBE16(pmsh->numblocks); - m_nChannels = 4; - m_nSamples = pmsh->numsamples; - if (m_nSamples > 63) m_nSamples = 63; - // Tempo - m_nDefaultTempo = 125; - deftempo = bswapBE16(pmsh->deftempo); - if (!deftempo) deftempo = 125; - if (pmsh->flags2 & MMD_FLAG2_BPM) - { - UINT tempo_tpl = (pmsh->flags2 & MMD_FLAG2_BMASK) + 1; - if (!tempo_tpl) tempo_tpl = 4; - deftempo *= tempo_tpl; - deftempo /= 4; - #ifdef MED_LOG - Log("newtempo: %3d bpm (bpm=%3d lpb=%2d)\n", deftempo, bswapBE16(pmsh->deftempo), (pmsh->flags2 & MMD_FLAG2_BMASK)+1); - #endif - } else - { - deftempo = _muldiv(deftempo, 5*715909, 2*474326); - #ifdef MED_LOG - Log("oldtempo: %3d bpm (bpm=%3d)\n", deftempo, bswapBE16(pmsh->deftempo)); - #endif - } - // Speed - m_nDefaultSpeed = pmsh->tempo2; - if (!m_nDefaultSpeed) m_nDefaultSpeed = 6; - if (deftempo < 0x21) deftempo = 0x21; - if (deftempo > 255) - { - while ((m_nDefaultSpeed > 3) && (deftempo > 260)) - { - deftempo = (deftempo * (m_nDefaultSpeed - 1)) / m_nDefaultSpeed; - m_nDefaultSpeed--; - } - if (deftempo > 255) deftempo = 255; - } - m_nDefaultTempo = deftempo; - // Reading Samples - for (UINT iSHdr=0; iSHdr<m_nSamples; iSHdr++) - { - MODINSTRUMENT *pins = &Ins[iSHdr+1]; - pins->nLoopStart = bswapBE16(pmsh->sample[iSHdr].rep) << 1; - pins->nLoopEnd = pins->nLoopStart + (bswapBE16(pmsh->sample[iSHdr].replen) << 1); - pins->nVolume = (pmsh->sample[iSHdr].svol << 2); - pins->nGlobalVol = 64; - if (pins->nVolume > 256) pins->nVolume = 256; - pins->RelativeTone = -12 * pmsh->sample[iSHdr].strans; - pins->nPan = 128; - if (pins->nLoopEnd) pins->uFlags |= CHN_LOOP; - } - // Common Flags - if (!(pmsh->flags & 0x20)) m_dwSongFlags |= SONG_FASTVOLSLIDES; - // Reading play sequence - if (version < '2') - { - UINT nbo = pmsh->songlen >> 8; - if (nbo >= MAX_ORDERS) nbo = MAX_ORDERS-1; - if (!nbo) nbo = 1; - memcpy(Order, pmsh->playseq, nbo); - playtransp = pmsh->playtransp; - } else - { - UINT nOrders, nSections; - UINT nTrks = bswapBE16(pmsh2->numtracks); - if ((nTrks >= 4) && (nTrks <= 32)) m_nChannels = nTrks; - DWORD playseqtable = bswapBE32(pmsh2->playseqtable); - UINT numplayseqs = bswapBE16(pmsh2->numpseqs); - if (!numplayseqs) numplayseqs = 1; - nOrders = 0; - nSections = bswapBE16(pmsh2->numsections); - DWORD sectiontable = bswapBE32(pmsh2->sectiontable); - if ((!nSections) || (!sectiontable) || (sectiontable >= dwMemLength-2)) nSections = 1; - nOrders = 0; - for (UINT iSection=0; iSection<nSections; iSection++) - { - UINT nplayseq = 0; - if ((sectiontable) && (sectiontable < dwMemLength-2)) - { - nplayseq = lpStream[sectiontable+1]; - sectiontable += 2; // WORDs - } else - { - nSections = 0; - } - UINT pseq = 0; - - if ((playseqtable) && (playseqtable + nplayseq*4 < dwMemLength)) - { - pseq = bswapBE32(((LPDWORD)(lpStream+playseqtable))[nplayseq]); - } - if ((pseq) && (pseq < dwMemLength - sizeof(MMD2PLAYSEQ))) - { - MMD2PLAYSEQ *pmps = (MMD2PLAYSEQ *)(lpStream + pseq); - if (!m_szNames[0][0]) memcpy(m_szNames[0], pmps->name, 31); - UINT n = bswapBE16(pmps->length); - if (pseq+n <= dwMemLength) - { - for (UINT i=0; i<n; i++) - { - UINT seqval = pmps->seq[i] >> 8; - if ((seqval < wNumBlocks) && (nOrders < MAX_ORDERS-1)) - { - Order[nOrders++] = seqval; - } - } - } - } - } - playtransp = pmsh2->playtransp; - while (nOrders < MAX_ORDERS) Order[nOrders++] = 0xFF; - } - // Reading Expansion structure - if (pmex) - { - // Channel Split - if ((m_nChannels == 4) && (pmsh->flags & 0x40)) - { - for (UINT i8ch=0; i8ch<4; i8ch++) - { - if (pmex->channelsplit[i8ch]) m_nChannels++; - } - } - // Song Comments - uint32_t annotxt = bswapBE32(pmex->annotxt); - uint32_t annolen = bswapBE32(pmex->annolen); - if ((annotxt) && (annolen) && (annotxt + annolen > annotxt) // overflow checks. - && (annotxt+annolen <= dwMemLength)) - { - m_lpszSongComments = new char[annolen+1]; - memcpy(m_lpszSongComments, lpStream+annotxt, annolen); - m_lpszSongComments[annolen] = 0; - } - // Song Name - uint32_t songname = bswapBE32(pmex->songname); - uint32_t songnamelen = bswapBE32(pmex->songnamelen); - if ((songname) && (songnamelen) && (songname+songnamelen > songname) - && (songname+songnamelen <= dwMemLength)) - { - if (songnamelen > 31) songnamelen = 31; - memcpy(m_szNames[0], lpStream+songname, songnamelen); - m_szNames[0][31] = '\0'; - } - // Sample Names - DWORD smpinfoex = bswapBE32(pmex->iinfo); - if (smpinfoex) - { - DWORD iinfoptr = bswapBE32(pmex->iinfo); - UINT ientries = bswapBE16(pmex->i_ext_entries); - UINT ientrysz = bswapBE16(pmex->i_ext_entrsz); - - if ((iinfoptr) && (ientrysz < 256) && - (ientries*ientrysz < dwMemLength) && - (iinfoptr < dwMemLength - (ientries*ientrysz))) - { - LPCSTR psznames = (LPCSTR)(lpStream + iinfoptr); - UINT maxnamelen = ientrysz; - // copy a max of 32 bytes. - if (maxnamelen > 32) maxnamelen = 32; - for (UINT i=0; i<ientries; i++) if (i < m_nSamples) - { - lstrcpyn(m_szNames[i+1], psznames + i*ientrysz, maxnamelen); - m_szNames[i+1][31] = '\0'; - } - } - } - // Track Names - DWORD trackinfo_ofs = bswapBE32(pmex->trackinfo_ofs); - if ((trackinfo_ofs) && (trackinfo_ofs + m_nChannels * 4 < dwMemLength)) - { - DWORD *ptrktags = (DWORD *)(lpStream + trackinfo_ofs); - for (UINT i=0; i<m_nChannels; i++) - { - DWORD trknameofs = 0, trknamelen = 0; - DWORD trktagofs = bswapBE32(ptrktags[i]); - if (trktagofs) - { - while (trktagofs+8 < dwMemLength) - { - DWORD ntag = bswapBE32(*(DWORD *)(lpStream + trktagofs)); - if (ntag == MMDTAG_END) break; - DWORD tagdata = bswapBE32(*(DWORD *)(lpStream + trktagofs + 4)); - switch(ntag) - { - case MMDTAG_TRK_NAMELEN: trknamelen = tagdata; break; - case MMDTAG_TRK_NAME: trknameofs = tagdata; break; - } - trktagofs += 8; - } - if (trknamelen > MAX_CHANNELNAME) trknamelen = MAX_CHANNELNAME; - if ((trknameofs) && (trknameofs + trknamelen < dwMemLength)) - { - lstrcpyn(ChnSettings[i].szName, (LPCSTR)(lpStream+trknameofs), MAX_CHANNELNAME); - ChnSettings[i].szName[MAX_CHANNELNAME-1] = '\0'; - } - } - } - } - } - // Reading samples - if (dwSmplArr > dwMemLength - 4*m_nSamples) return TRUE; - pdwTable = (LPDWORD)(lpStream + dwSmplArr); - for (UINT iSmp=0; iSmp<m_nSamples; iSmp++) if (pdwTable[iSmp]) - { - UINT dwPos = bswapBE32(pdwTable[iSmp]); - if ((dwPos >= dwMemLength) || (dwPos + sizeof(MMDSAMPLEHEADER) >= dwMemLength)) continue; - MMDSAMPLEHEADER *psdh = (MMDSAMPLEHEADER *)(lpStream + dwPos); - UINT len = bswapBE32(psdh->length); - #ifdef MED_LOG - Log("SampleData %d: stype=0x%02X len=%d\n", iSmp, bswapBE16(psdh->type), len); - #endif - if ((len > MAX_SAMPLE_LENGTH) || (dwPos + len + 6 > dwMemLength)) len = 0; - UINT flags = RS_PCM8S, stype = bswapBE16(psdh->type); - LPSTR psdata = (LPSTR)(lpStream + dwPos + 6); - if (stype & 0x80) - { - psdata += (stype & 0x20) ? 14 : 6; - } else - { - if (stype & 0x10) - { - Ins[iSmp+1].uFlags |= CHN_16BIT; - len /= 2; - flags = (stype & 0x20) ? RS_STPCM16M : RS_PCM16M; - } else - { - flags = (stype & 0x20) ? RS_STPCM8S : RS_PCM8S; - } - if (stype & 0x20) len /= 2; - } - Ins[iSmp+1].nLength = len; - ReadSample(&Ins[iSmp+1], flags, psdata, dwMemLength - dwPos - 6); - } - // Reading patterns (blocks) - if (wNumBlocks > MAX_PATTERNS) wNumBlocks = MAX_PATTERNS; - if ((!dwBlockArr) || (dwBlockArr > dwMemLength - 4*wNumBlocks)) return TRUE; - pdwTable = (LPDWORD)(lpStream + dwBlockArr); - playtransp += (version == '3') ? 24 : 48; - for (UINT iBlk=0; iBlk<wNumBlocks; iBlk++) - { - UINT dwPos = bswapBE32(pdwTable[iBlk]); - if ((!dwPos) || (dwPos >= dwMemLength) || (dwPos >= dwMemLength - 8)) continue; - UINT lines = 64, tracks = 4; - if (version == '0') - { - const MMD0BLOCK *pmb = (const MMD0BLOCK *)(lpStream + dwPos); - lines = pmb->lines + 1; - tracks = pmb->numtracks; - if (!tracks) tracks = m_nChannels; - if ((Patterns[iBlk] = AllocatePattern(lines, m_nChannels)) == NULL) continue; - PatternSize[iBlk] = lines; - MODCOMMAND *p = Patterns[iBlk]; - LPBYTE s = (LPBYTE)(lpStream + dwPos + 2); - UINT maxlen = tracks*lines*3; - if (maxlen + dwPos > dwMemLength - 2) break; - for (UINT y=0; y<lines; y++) - { - for (UINT x=0; x<tracks; x++, s+=3) if (x < m_nChannels) - { - BYTE note = s[0] & 0x3F; - BYTE instr = s[1] >> 4; - if (s[0] & 0x80) instr |= 0x10; - if (s[0] & 0x40) instr |= 0x20; - if ((note) && (note <= 132)) p->note = note + playtransp; - p->instr = instr; - p->command = s[1] & 0x0F; - p->param = s[2]; - // if (!iBlk) Log("%02X.%02X.%02X | ", s[0], s[1], s[2]); - MedConvert(p, pmsh); - p++; - } - //if (!iBlk) Log("\n"); - } - } else - { - MMD1BLOCK *pmb = (MMD1BLOCK *)(lpStream + dwPos); - #ifdef MED_LOG - Log("MMD1BLOCK: lines=%2d, tracks=%2d, offset=0x%04X\n", - bswapBE16(pmb->lines), bswapBE16(pmb->numtracks), bswapBE32(pmb->info)); - #endif - MMD1BLOCKINFO *pbi = NULL; - BYTE *pcmdext = NULL; - lines = (pmb->lines >> 8) + 1; - tracks = pmb->numtracks >> 8; - if (!tracks) tracks = m_nChannels; - if ((Patterns[iBlk] = AllocatePattern(lines, m_nChannels)) == NULL) continue; - PatternSize[iBlk] = (WORD)lines; - DWORD dwBlockInfo = bswapBE32(pmb->info); - if ((dwBlockInfo) && (dwBlockInfo < dwMemLength - sizeof(MMD1BLOCKINFO))) - { - pbi = (MMD1BLOCKINFO *)(lpStream + dwBlockInfo); - #ifdef MED_LOG - Log(" BLOCKINFO: blockname=0x%04X namelen=%d pagetable=0x%04X &cmdexttable=0x%04X\n", - bswapBE32(pbi->blockname), bswapBE32(pbi->blocknamelen), bswapBE32(pbi->pagetable), bswapBE32(pbi->cmdexttable)); - #endif - if ((pbi->blockname) && (pbi->blocknamelen)) - { - DWORD nameofs = bswapBE32(pbi->blockname); - UINT namelen = bswapBE32(pbi->blocknamelen); - if ((nameofs < dwMemLength) && (nameofs+namelen < dwMemLength)) - { - SetPatternName(iBlk, (LPCSTR)(lpStream+nameofs)); - } - } - if (pbi->cmdexttable) - { - DWORD cmdexttable = bswapBE32(pbi->cmdexttable); - if (cmdexttable < dwMemLength - 4) - { - cmdexttable = bswapBE32(*(DWORD *)(lpStream + cmdexttable)); - if ((cmdexttable) && (cmdexttable <= dwMemLength - lines*tracks)) - { - pcmdext = (BYTE *)(lpStream + cmdexttable); - } - } - } - } - MODCOMMAND *p = Patterns[iBlk]; - LPBYTE s = (LPBYTE)(lpStream + dwPos + 8); - UINT maxlen = tracks*lines*4; - if (maxlen + dwPos > dwMemLength - 8) break; - for (UINT y=0; y<lines; y++) - { - for (UINT x=0; x<tracks; x++, s+=4) if (x < m_nChannels) - { - BYTE note = s[0]; - if ((note) && (note <= 132)) - { - int rnote = note + playtransp; - if (rnote < 1) rnote = 1; - if (rnote > 120) rnote = 120; - p->note = (BYTE)rnote; - } - p->instr = s[1]; - p->command = s[2]; - p->param = s[3]; - if (pcmdext) p->vol = pcmdext[x]; - MedConvert(p, pmsh); - p++; - } - if (pcmdext) pcmdext += tracks; - } - } - } - // Setup channel pan positions - for (UINT iCh=0; iCh<m_nChannels; iCh++) - { - ChnSettings[iCh].nPan = (((iCh&3) == 1) || ((iCh&3) == 2)) ? 0xC0 : 0x40; - ChnSettings[iCh].nVolume = 64; - } - return TRUE; -} - - |