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wtmf2mid.c
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wtmf2mid.c
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// Wolfteam MF -> Midi Converter
// -----------------------------
// Written by Valley Bell, 06 August 2019
// Updated with Little Endian support on 24 October 2019
// based on TGL FMP -> Midi Converter
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <math.h>
#include "stdtype.h"
#ifndef INLINE
#if defined(_MSC_VER)
#define INLINE static __inline
#elif defined(__GNUC__)
#define INLINE static __inline__
#else
#define INLINE static inline
#endif
#endif // INLINE
#ifdef _MSC_VER
#define stricmp _stricmp
#else
#define stricmp strcasecmp
#endif
#include "midi_funcs.h"
typedef struct _track_info
{
UINT16 startOfs;
UINT16 loopOfs;
UINT32 tickCnt;
UINT32 loopTick;
UINT16 loopTimes;
UINT8 midChn;
} TRK_INF;
#define RUNNING_NOTES
#define BALANCE_TRACK_TIMES
#include "midi_utils.h"
static UINT8 ReadMFHeader(UINT32 songLen, const UINT8* songData);
UINT8 WtM2Mid(UINT16 songLen, const UINT8* songData);
static void PreparseWtMTrk(UINT32 songLen, const UINT8* songData, TRK_INF* trkInf);
static UINT8 MidiDelayHandler(FILE_INF* fInf, UINT32* delay);
static UINT8 WriteFileData(UINT32 dataLen, const UINT8* data, const char* fileName);
INLINE UINT32 Tempo2Mid(UINT16 bpm, UINT8 scale);
INLINE UINT16 ReadLE16(const UINT8* data);
INLINE UINT16 ReadBE16(const UINT8* data);
INLINE UINT16 ReadUInt16(const UINT8* data);
INLINE UINT32 ReadLE32(const UINT8* data);
INLINE UINT32 ReadBE32(const UINT8* data);
INLINE UINT32 ReadUInt32(const UINT8* data);
static const char* GetLastDirSepPos(const char* fileName);
INLINE const char* GetFileTitle(const char* fileName);
static UINT32 ROMLen;
static UINT8* ROMData;
static UINT32 MidLen;
static UINT32 MidAlloc;
static UINT8* MidData;
#define MAX_RUN_NOTES 0x20 // should be plenty, the driver can only store up to 8 simultaneous notes
static UINT16 RunNoteCnt;
static RUN_NOTE RunNotes[MAX_RUN_NOTES];
static UINT16 MIDI_RES = 0;
static UINT16 NUM_LOOPS = 2;
static UINT8 NO_LOOP_EXT = 0;
static UINT8 DRV_BUGS = 0;
// MF sub-song flags
// bit 0 (01): Endianess (0 - little, 1 - big)
// others are unknown, but the X68000 sound drivers enforce 0x28
static UINT8 mfFlags = 0x00;
static UINT8 mfSongs = 0;
static UINT32 mfSize = 0;
int main(int argc, char* argv[])
{
int argbase;
FILE* hFile;
UINT8 retVal;
printf("Wolfteam MF -> Midi Converter\n-----------------------------\n");
if (argc < 3)
{
printf("Usage: wtmf2mid.exe [options] input.bin output.mid\n");
printf("Options:\n");
printf(" -Loops n Loop each track at least n times. (default: %u)\n", NUM_LOOPS);
printf(" -NoLpExt No Loop Extension\n");
printf(" Do not fill short tracks to the length of longer ones.\n");
printf(" -TpQ n convert with n ticks per quarter.\n");
printf(" default: 48 (PC-98) / 24 (X68000)\n");
printf(" -Bugs Replicate sound driver bugs.\n");
return 0;
}
MidiDelayCallback = MidiDelayHandler;
argbase = 1;
while(argbase < argc && argv[argbase][0] == '-')
{
if (! stricmp(argv[argbase] + 1, "Loops"))
{
argbase ++;
if (argbase < argc)
{
NUM_LOOPS = (UINT16)strtoul(argv[argbase], NULL, 0);
if (! NUM_LOOPS)
NUM_LOOPS = 2;
}
}
else if (! stricmp(argv[argbase] + 1, "NoLpExt"))
NO_LOOP_EXT = 1;
else if (! stricmp(argv[argbase] + 1, "TpQ"))
{
argbase ++;
if (argbase < argc)
MIDI_RES = (UINT16)strtoul(argv[argbase], NULL, 0);
}
else if (! stricmp(argv[argbase] + 1, "Bugs"))
DRV_BUGS = 1;
else
break;
argbase ++;
}
if (argc < argbase + 2)
{
printf("Not enough arguments.\n");
return 0;
}
hFile = fopen(argv[argbase + 0], "rb");
if (hFile == NULL)
{
printf("Error opening file!\n");
return 1;
}
fseek(hFile, 0x00, SEEK_END);
ROMLen = ftell(hFile);
if (ROMLen > 0x100000) // 1 MB
ROMLen = 0x100000;
fseek(hFile, 0x00, SEEK_SET);
ROMData = (UINT8*)malloc(ROMLen);
fread(ROMData, 0x01, ROMLen, hFile);
fclose(hFile);
retVal = ReadMFHeader(ROMLen, ROMData);
if (! retVal)
{
const char* fileName = argv[argbase + 1];
const char* fileExt;
char* outName;
char* outExt;
UINT32 curPos;
UINT8 curSong;
UINT16 songLen;
fileExt = strrchr(GetFileTitle(fileName), '.');
if (fileExt == NULL)
fileExt = fileName + strlen(fileName);
outName = (char*)malloc(strlen(fileName) + 0x10);
strcpy(outName, fileName);
outExt = outName + (fileExt - fileName);
if (mfSongs == 0)
printf("Info: The file contains no songs.\n");
else if (mfSongs > 1)
printf("Info: Converting %u songs.\n", mfSongs);
if (mfSize > ROMLen)
mfSize = ROMLen; // just for safety
MidAlloc = 0x20000; // 128 KB should be enough
MidData = (UINT8*)malloc(MidAlloc);
curPos = 0x08;
// I haven't seen any files that contain multiple songs so far.
// But the format and sound driver both support it.
for (curSong = 0; curSong < mfSongs; curSong ++)
{
if (curPos >= mfSize)
break;
songLen = ReadUInt16(&ROMData[curPos]);
if ((UINT32)songLen > mfSize - curPos)
songLen = (UINT16)(mfSize - curPos);
retVal = WtM2Mid(songLen, &ROMData[curPos]);
if (! retVal)
{
// generate file name(ABC.ext -> ABC_00.ext)
if (mfSongs > 1)
sprintf(outExt, "_%02X%s", curSong, fileExt);
WriteFileData(MidLen, MidData, outName);
}
curPos += songLen;
}
free(MidData); MidData = NULL;
free(outName); outName = NULL;
}
printf("Done.\n");
free(ROMData); ROMData = NULL;
#ifdef _DEBUG
//getchar();
#endif
return 0;
}
static UINT8 ReadMFHeader(UINT32 songLen, const UINT8* songData)
{
UINT32 valLE;
UINT32 valBE;
if (memcmp(&songData[0x00], "MF", 0x02) && memcmp(&songData[0x00], "MU", 0x02))
{
printf("Not a Wolfteam MF file!\n");
return 0x80;
}
if (songData[0x02] > 2 || songData[0x03] > 0)
{
printf("Not a Wolfteam MF file!\n");
return 0x80;
}
valLE = ReadLE32(&songData[0x04]);
valBE = ReadBE32(&songData[0x04]);
mfFlags = (valLE < valBE) ? 0x00 : 0x01; // bit 0 = Endianess
mfSongs = songData[0x02];
// 0x03 is unknown (always 0)
mfSize = ReadUInt32(&songData[0x04]); // archive size
return 0x00;
}
UINT8 WtM2Mid(UINT16 songLen, const UINT8* songData)
{
TRK_INF trkInf[32];
TRK_INF* tempTInf;
UINT8 trkCnt;
UINT8 curTrk;
UINT16 segPos;
UINT16 inPos;
FILE_INF midFileInf;
MID_TRK_STATE MTS;
UINT8 songTempo;
UINT8 trkEnd;
UINT8 rhythmMode;
UINT8 measureID;
UINT8 loopIdx;
UINT8 loopMeasure[0x10];
UINT16 loopCount[0x10];
UINT16 loopSegPos[0x10];
UINT8 curCmd;
UINT8 curCmdType;
UINT8 curDelay;
UINT8 curNote;
UINT8 curNoteLen;
UINT8 curNoteVol;
UINT8 earlyNoteOff;
UINT16 pbVal;
UINT32 tempLng;
//UINT16 tempSht;
UINT8 tempByt;
UINT8 tempArr[10];
UINT8 gsParams[6]; // 0 device ID, 1 model ID, 2 address high, 3 address low
midFileInf.alloc = MidAlloc;
midFileInf.data = MidData;
midFileInf.pos = 0x00;
inPos = 0x00;
mfFlags = songData[0x05]; // read flags first
segPos = ReadUInt16(&songData[0x00]);
if (songLen > segPos)
songLen = segPos;
//tempSht = ReadUInt16(&songData[0x02]); // unknown
//tempByt = songData[0x04]; // unknown
songTempo = songData[0x06];
trkCnt = songData[0x07];
inPos = 0x08;
for (curTrk = 0; curTrk < trkCnt; curTrk ++, inPos += 0x04)
{
tempTInf = &trkInf[curTrk];
tempTInf->startOfs = ReadUInt16(&songData[inPos + 0x00]);
tempTInf->loopOfs = 0x0000;
tempTInf->tickCnt = 0;
tempTInf->loopTick = 0;
tempTInf->midChn = songData[inPos + 0x02];
PreparseWtMTrk(songLen, songData, tempTInf);
tempTInf->loopTimes = tempTInf->loopOfs ? NUM_LOOPS : 0;
}
if (! MIDI_RES)
MIDI_RES = (mfFlags & 0x01) ? 24 : 48; // different default based on Endianess flag
WriteMidiHeader(&midFileInf, 0x0001, trkCnt, MIDI_RES);
if (! NO_LOOP_EXT)
BalanceTrackTimes(trkCnt, trkInf, MIDI_RES / 4, 0xFF);
for (curTrk = 0; curTrk < trkCnt; curTrk ++)
{
tempTInf = &trkInf[curTrk];
WriteMidiTrackStart(&midFileInf, &MTS);
if (curTrk == 0)
{
tempLng = Tempo2Mid(songTempo, 0x40);
WriteBE32(tempArr, tempLng);
WriteMetaEvent(&midFileInf, &MTS, 0x51, 0x03, &tempArr[0x01]);
}
if (tempTInf->midChn == 0xFF)
{
// disabled track (the driver skips processing this track)
trkEnd = 1;
}
else
{
trkEnd = 0;
MTS.midChn = tempTInf->midChn & 0x0F;
WriteMetaEvent(&midFileInf, &MTS, 0x20, 0x01, &MTS.midChn);
}
rhythmMode = tempTInf->midChn & 0x80;
segPos = tempTInf->startOfs;
measureID = 1;
loopIdx = 0;
inPos = 0x0000;
earlyNoteOff = 0; // verified with driver disassembly
curNoteVol = 0x7F; // verified with driver disassembly
RunNoteCnt = 0;
while(! trkEnd && inPos < songLen)
{
if (! inPos)
{
inPos = ReadUInt16(&songData[segPos]);
segPos += 0x02;
if (inPos < 0x0010)
{
switch(inPos)
{
case 0: // track end
default: // fallback case - confirmed via disassembly
trkEnd = 1;
break;
case 1: // master loop start
if (loopIdx >= 0x10)
{
printf("Error: Too many nested loops!\n");
trkEnd = 1;
break;
}
loopCount[loopIdx] = 0;
loopMeasure[loopIdx] = measureID;
loopSegPos[loopIdx] = segPos;
if (segPos == tempTInf->loopOfs)
WriteEvent(&midFileInf, &MTS, 0xB0, 0x6F, (UINT8)loopCount[loopIdx]);
loopIdx ++;
break;
case 2: // master loop end
{
UINT16 numLoops;
numLoops = ReadUInt16(&songData[segPos]);
segPos += 0x02;
if (loopIdx == 0) // the driver actually checks this
{
trkEnd = 1;
break;
}
loopIdx --;
loopCount[loopIdx] ++;
if (! numLoops)
{
numLoops = tempTInf->loopTimes;
if (loopCount[loopIdx] < 0x80)
WriteEvent(&midFileInf, &MTS, 0xB0, 0x6F, (UINT8)loopCount[loopIdx]);
}
if (loopCount[loopIdx] < numLoops)
{
measureID = loopMeasure[loopIdx];
segPos = loopSegPos[loopIdx];
loopIdx ++;
}
// not done by the driver, but fixes drum track in Arcus Odyssey 1B.BIN
if (! DRV_BUGS)
earlyNoteOff = 0;
}
break;
}
inPos = 0x0000;
}
continue;
}
curCmd = songData[inPos]; inPos ++;
if (curCmd < 0x80)
{
curNote = curCmd;
curDelay = songData[inPos]; inPos ++;
if (rhythmMode)
{
curNoteLen = (curDelay > 0) ? curDelay : 1;
}
else
{
if (! curDelay)
{
curNoteLen = songData[inPos]; inPos ++;
// Note: notes with curNoteLen==0 are completely ignored
}
else
{
// possible underflow intended (confirmed via driver disassembly)
curNoteLen = curDelay - earlyNoteOff;
}
}
CheckRunningNotes(&midFileInf, &MTS.curDly, &RunNoteCnt, RunNotes);
for (tempByt = 0; tempByt < RunNoteCnt; tempByt ++)
{
if (RunNotes[tempByt].note == curNote)
{
// I confirmed via disassembly, that the actual driver *sets*
// the note length. (It doesn't just add the ticks to the previous length.)
RunNotes[tempByt].remLen = MTS.curDly + curNoteLen;
break;
}
}
if (tempByt >= RunNoteCnt && curNote != 0xFF)
{
WriteEvent(&midFileInf, &MTS, 0x90, curNote, curNoteVol);
AddRunningNote(MAX_RUN_NOTES, &RunNoteCnt, RunNotes,
MTS.midChn, curNote, 0x00, curNoteLen); // The sound driver sends 8# note 00.
}
MTS.curDly += curDelay;
}
else
{
// I should proably turn this if-else block into a LUT, but... can't be bothered.
if (curCmd >= 0x80 && curCmd <= 0xAF)
{
curCmdType = curCmd & ~0x07;
curDelay = ((curCmd & 0x07) == 0x07) ? 0xFF : (curCmd & 0x07);
}
else if (curCmd >= 0xB0 && curCmd <= 0xDF)
{
curCmdType = curCmd & ~0x0F;
curDelay = ((curCmd & 0x0F) == 0x0F) ? 0xFF : (curCmd & 0x0F);
}
else if (curCmd >= 0xE0 && curCmd <= 0xE7)
{
curCmdType = curCmd & ~0x01;
curDelay = ((curCmd & 0x01) == 0x01) ? 0xFF : (curCmd & 0x0F);
}
else
{
curCmdType = curCmd;
curDelay = 0;
}
if (curDelay == 0xFF)
{
curDelay = songData[inPos];
inPos ++;
}
switch(curCmdType)
{
case 0x80: // Modulation
WriteEvent(&midFileInf, &MTS, 0xB0, 0x01, songData[inPos]);
inPos ++;
break;
case 0x88: // Volume
WriteEvent(&midFileInf, &MTS, 0xB0, 0x07, songData[inPos]);
inPos ++;
break;
case 0x90: // Pan
WriteEvent(&midFileInf, &MTS, 0xB0, 0x0A, songData[inPos]);
inPos ++;
break;
case 0x98: // Expression
WriteEvent(&midFileInf, &MTS, 0xB0, 0x0B, songData[inPos]);
inPos ++;
break;
case 0xA0: // Instrument
WriteEvent(&midFileInf, &MTS, 0xC0, songData[inPos], 0x00);
inPos ++;
break;
case 0xA8: // Control Change
WriteEvent(&midFileInf, &MTS, 0xB0, songData[inPos + 0x00], songData[inPos + 0x01]);
inPos += 0x02;
break;
case 0xB0: // Pitch Bend (8-bit)
pbVal = 0x2000 + songData[inPos]; inPos ++;
WriteEvent(&midFileInf, &MTS, 0xE0, (pbVal >> 0) & 0x7F, (pbVal >> 7) & 0x7F);
break;
case 0xC0: // Pitch Bend (16-bit)
pbVal = 0x2000 + ReadUInt16(&songData[inPos]); inPos += 0x02;
WriteEvent(&midFileInf, &MTS, 0xE0, (pbVal >> 0) & 0x7F, (pbVal >> 7) & 0x7F);
break;
case 0xD0: // set Early Note Stop
if ((curCmd & 0x0F) == 0x0F)
earlyNoteOff = curDelay; // use parameter byte directly
else
earlyNoteOff = (UINT8)(curDelay - 1); // underflow from 0x00 to 0xFF intended and present in original driver
curDelay = 0;
break;
case 0xE0: // Tempo
//printf("Tempo Change: %u, %u\n", songData[inPos + 0x00], songData[inPos + 0x01]);
tempByt = songData[inPos + 0x00];
inPos += 0x02; // 2nd byte is unknown and ignored by all drivers
// Note: Some songs in spanof98 (e.g. 0EE_MI03 and 0EF_MI04) use this command.
// Its first parameter is a 2.6 fixed point scale factor.
// (i.e. 0x40 = 100%, 0x20 = 50%, just like in RCP files)
//
// However, in the PC-9801 and X68000 sound drivers I checked, they just store the
// parameter into the "song tempo" value - and then don't touch it again.
// So the command has no effect.
//
// P.S.: It is implemented properly in MFD.COM
// P.S.2: in MFD.COM, the formula is: songTempo = baseSongTempo + tempByt - 0x40;
// P.S.3: In the sound driver of "Twilight", the formula is matchs the RCP algorithm:
// songTempo = baseSongTempo * tempByt / 0x40;
if (! DRV_BUGS)
{
tempLng = Tempo2Mid(songTempo, tempByt);
WriteBE32(tempArr, tempLng);
WriteMetaEvent(&midFileInf, &MTS, 0x51, 0x03, &tempArr[0x01]);
}
break;
case 0xE2: // set MIDI channel
tempByt = songData[inPos]; inPos ++;
if (tempByt == 0xFF)
{
trkEnd = 1; // confirmed via driver disassembly
}
else
{
MTS.midChn = tempByt & 0x0F;
WriteMetaEvent(&midFileInf, &MTS, 0x20, 0x01, &MTS.midChn);
}
break;
case 0xE4: // set Channel Aftertouch
WriteEvent(&midFileInf, &MTS, 0xD0, songData[inPos], 0x00);
inPos ++;
break;
case 0xE6: // set Note Aftertouch
WriteEvent(&midFileInf, &MTS, 0xA0, songData[inPos + 0x00], songData[inPos + 0x01]);
inPos += 0x02;
break;
case 0xEC: // Pan Centre
case 0xED: // Pan Right
case 0xEE: // Pan Left
case 0xEF: // Pan Centre
if (curCmd == 0xED)
tempByt = 0x00;
else if (curCmd == 0xEE)
tempByt = 0x7F;
else
tempByt = 0x40;
if (! DRV_BUGS)
WriteEvent(&midFileInf, &MTS, 0xB0, 0x0A, tempByt);
else // typo bug present in X68000 driver (good in PC-98 version)
WriteEvent(&midFileInf, &MTS, 0xB0, 0x10, tempByt); // yes, it *really* does this (typo: 10 vs $10)
break;
case 0xF0: // delay
curDelay = songData[inPos];
if (curDelay > 0 && DRV_BUGS)
{
// The driver stops *all* running notes before executing a delay > 0.
// However, most of the time this doesn't seem to be intentional, as it cuts
// notes that just started to play.
// e.g. Arcus Odyssey 15.BIN (ch 9), Ryu: Naki No Ryu Yori 08.BIN (ch 11)
UINT32 maxLen = 0;
for (curNote = 0; curNote < RunNoteCnt; curNote ++)
{
if (RunNotes[curNote].remLen > maxLen)
maxLen = RunNotes[curNote].remLen;
}
if (maxLen > MTS.curDly)
{
//printf("Notes still playing at delay on track %u / chn %u!\n", curTrk, MTS.midChn);
//WriteEvent(&midFileInf, &MTS, 0xB0, 113, 0x00);
for (curNote = 0; curNote < RunNoteCnt; curNote ++)
{
if (RunNotes[curNote].remLen > MTS.curDly)
RunNotes[curNote].remLen = MTS.curDly;
}
}
}
inPos ++;
break;
case 0xF1: // set Note Velocity
curNoteVol = songData[inPos];
inPos ++;
break;
case 0xF8: // GS instrument (RCP command 0xE2) [Twilight driver only]
// only present in the sound driver of Studio Twinkle's "Twilight"
WriteEvent(&midFileInf, &MTS, 0xB0, 0x00, songData[inPos + 0x02]);
WriteEvent(&midFileInf, &MTS, 0xB0, 0x20, 0x00);
WriteEvent(&midFileInf, &MTS, 0xC0, songData[inPos + 0x01], 0x00);
curDelay = songData[inPos + 0x00];
inPos += 0x03;
break;
case 0xF9: // Roland Base Address (RCP command 0xDD) [Twilight driver only]
gsParams[2] = songData[inPos + 0x01];
gsParams[3] = songData[inPos + 0x02];
curDelay = songData[inPos + 0x00];
inPos += 0x03;
break;
case 0xFA: // Roland Parameter (RCP command 0xDE) [Twilight driver only]
gsParams[4] = songData[inPos + 0x01];
gsParams[5] = songData[inPos + 0x02];
{
UINT8 chkSum;
UINT8 curParam;
tempArr[0] = 0x41; // Manufacturer ID: Roland
tempArr[1] = gsParams[0]; // Device ID
tempArr[2] = gsParams[1]; // Model ID
tempArr[3] = 0x12; // Command: DT1
chkSum = 0x00; // initialize checksum
for (curParam = 0; curParam < 4; curParam ++)
{
tempArr[4 + curParam] = gsParams[2 + curParam];
chkSum += gsParams[2 + curParam]; // add to checksum
}
tempArr[8] = (0x100 - chkSum) & 0x7F;
tempArr[9] = 0xF7;
WriteLongEvent(&midFileInf, &MTS, 0xF0, 10, tempArr);
}
curDelay = songData[inPos + 0x00];
inPos += 0x03;
break;
case 0xFB: // Roland Device (RCP command 0xDF) [Twilight driver only]
gsParams[0] = songData[inPos + 0x01];
gsParams[1] = songData[inPos + 0x02];
curDelay = songData[inPos + 0x00];
inPos += 0x03;
break;
case 0xFC: // raw RCP command [MFD.COM only]
// The Wolfteam sound driver ignores all parameters but the delay.
// However, MFD.COM actually implements this (with RCP commands DD/DE/DF only)
// and e.g. night_s_98 uses it for SysEx commands.
curCmd = songData[inPos + 0x00];
curDelay = songData[inPos + 0x01];
switch(curCmd)
{
case 0xDD: // Roland Base Address
gsParams[2] = songData[inPos + 0x02];
gsParams[3] = songData[inPos + 0x03];
break;
case 0xDE: // Roland Parameter
gsParams[4] = songData[inPos + 0x02];
gsParams[5] = songData[inPos + 0x03];
{
UINT8 chkSum;
UINT8 curParam;
tempArr[0] = 0x41; // Roland ID
tempArr[1] = gsParams[0];
tempArr[2] = gsParams[1];
tempArr[3] = 0x12;
chkSum = 0x00; // initialize checksum
for (curParam = 0; curParam < 4; curParam ++)
{
tempArr[4 + curParam] = gsParams[2 + curParam];
chkSum += gsParams[2 + curParam]; // add to checksum
}
tempArr[8] = (0x100 - chkSum) & 0x7F;
tempArr[9] = 0xF7;
WriteLongEvent(&midFileInf, &MTS, 0xF0, 10, tempArr);
}
break;
case 0xDF: // Roland Device
gsParams[0] = songData[inPos + 0x02];
gsParams[1] = songData[inPos + 0x03];
break;
case 0xF6: // comment
{
UINT32 curPos;
UINT32 allDelay;
UINT16 txtLen;
UINT16 txtPos;
char* txtBuf;
txtLen = 2;
for (curPos = inPos + 0x05; inPos < songLen; curPos += 0x05, txtLen += 2)
{
if (! (songData[curPos - 0x01] == 0xFC && songData[curPos + 0x00] == 0xF7))
break;
}
// I know constantly doing malloc() is inefficient ... but I don't care,
// as comments aren't used a lot in the files.
txtBuf = (char*)malloc(txtLen);
allDelay = 0;
for (curPos = inPos, txtPos = 0; txtPos < txtLen; curPos += 0x05, txtPos += 2)
{
allDelay += songData[curPos + 0x01];
txtBuf[txtPos + 0x00] = songData[curPos + 0x02];
txtBuf[txtPos + 0x01] = songData[curPos + 0x03];
}
while(txtLen > 0 && txtBuf[txtLen - 1] == ' ')
txtLen --; // trim off trailing spaces
WriteMetaEvent(&midFileInf, &MTS, 0x01, txtLen, txtBuf);
free(txtBuf);
curDelay = 0;
MTS.curDly += allDelay;
inPos = curPos - 0x05;
}
break;
case 0xF7: // continuation of previous command
printf("Warning Track %u: Unexpected RCP continuation command at 0x%04X!\n", curTrk, inPos);
break;
default:
printf("Warning Track %u: Unhandled RCP command %02X at 0x%04X!\n", curTrk, curCmd, inPos);
break;
}
inPos += 0x04;
break;
case 0xFD: // increment measure ID
// I haven't found any file that uses this.
//printf("Event %02X on track %u at %04X\n", curCmd, curTrk, inPos);
measureID ++;
break;
case 0xFE: // measure quit
// This command is often used to "split" a measure in order to set a loop point.
//printf("Event %02X on track %u at %04X\n", curCmd, curTrk, inPos);
// load new measure pointer
inPos = 0x0000;
break;
case 0xFF: // measure end
// increment measure ID + load new measure pointer
measureID ++;
inPos = 0x0000;
break;
default:
printf("Unknown event %02X on track %u at %04X\n", curCmd, curTrk, inPos);
WriteEvent(&midFileInf, &MTS, 0xB0, 0x6E, curCmd & 0x7F);
inPos += 0x01;
trkEnd = 1;
break;
}
MTS.curDly += curDelay;
}
}
FlushRunningNotes(&midFileInf, &MTS.curDly, &RunNoteCnt, RunNotes, 0);
WriteEvent(&midFileInf, &MTS, 0xFF, 0x2F, 0x00);
WriteMidiTrackEnd(&midFileInf, &MTS);
}
MidAlloc = midFileInf.alloc;
MidData = midFileInf.data;
MidLen = midFileInf.pos;
return 0x00;
}
static void PreparseWtMTrk(UINT32 songLen, const UINT8* songData, TRK_INF* trkInf)
{
UINT16 segPos;
UINT16 inPos;
UINT8 cmdDelay;
UINT8 trkEnd;
UINT8 rhythmMode;
UINT8 curCmd;
UINT8 curCmdType;
UINT8 loopIdx;
UINT16 loopCount[0x10];
UINT16 loopSegPos[0x10];
UINT32 loopTick[0x10];
trkEnd = (trkInf->midChn == 0xFF);
loopIdx = 0x00;
trkInf->loopOfs = 0x0000;
rhythmMode = trkInf->midChn & 0x80;
segPos = trkInf->startOfs;
inPos = 0x0000;
while(! trkEnd && inPos < songLen)
{
if (! inPos)
{
inPos = ReadUInt16(&songData[segPos]);
segPos += 0x02;
if (inPos < 0x0010)
{
switch(inPos)
{
case 0: // track end
default:
trkEnd = 1;
break;
case 1: // master loop start
if (loopIdx >= 0x10)
{
trkEnd = 1;
break;
}
loopCount[loopIdx] = 0;
loopSegPos[loopIdx] = segPos;
loopTick[loopIdx] = trkInf->tickCnt;
loopIdx ++;
break;
case 2: // master loop end
{
UINT16 numLoops;
numLoops = ReadUInt16(&songData[segPos]);
segPos += 0x02;
if (loopIdx == 0)
{
trkEnd = 1;
break;
}
loopIdx --;
loopCount[loopIdx] ++;
if (! numLoops)
{
// master loop
if (! trkInf->loopOfs)
{
trkInf->loopOfs = loopSegPos[loopIdx];
trkInf->loopTick = loopTick[loopIdx];
}
}
if (loopCount[loopIdx] < numLoops)
{
segPos = loopSegPos[loopIdx];
loopIdx ++;
}
}
break;
}
inPos = 0x0000;
}
continue;
}
curCmd = songData[inPos];
if (curCmd < 0x80)
{
cmdDelay = songData[inPos + 0x01];
inPos += 0x02;
if (cmdDelay == 0 && ! rhythmMode)
inPos ++;
}
else
{
inPos ++;
if (curCmd >= 0x80 && curCmd <= 0xAF)
{
curCmdType = curCmd & ~0x07;
cmdDelay = ((curCmd & 0x07) == 0x07) ? 0xFF : (curCmd & 0x07);
}
else if (curCmd >= 0xB0 && curCmd <= 0xDF)
{
curCmdType = curCmd & ~0x0F;
cmdDelay = ((curCmd & 0x0F) == 0x0F) ? 0xFF : (curCmd & 0x0F);
}
else if (curCmd >= 0xE0 && curCmd <= 0xE7)
{
curCmdType = curCmd & ~0x01;
cmdDelay = ((curCmd & 0x01) == 0x01) ? 0xFF : (curCmd & 0x0F);
}
else
{
curCmdType = curCmd;
cmdDelay = 0;
}
if (cmdDelay == 0xFF)
{
cmdDelay = songData[inPos];
inPos ++;
}
switch(curCmdType)
{
case 0xD0: // set Early Note Stop
// the value used as delay for all other events is the actual parameter here
cmdDelay = 0;
break;
case 0xEC: // Pan Centre
case 0xED: // Pan Right
case 0xEE: // Pan Left
case 0xEF: // Pan Centre
break;
case 0x80: // Modulation
case 0x88: // Volume
case 0x90: // Pan
case 0x98: // Expression
case 0xA0: // Instrument
case 0xB0: // Pitch Bend (8-bit)
case 0xE4: // set Channel Aftertouch
case 0xF1: // set Note Velocity
inPos ++;
break;
case 0xA8: // Control Change
case 0xC0: // Pitch Bend (16-bit)
case 0xE0: // Tempo
case 0xE6: // set Note Aftertouch
inPos += 0x02;
break;
case 0xE2: // set MIDI channel
if (songData[inPos] == 0xFF)
trkEnd = 1; // confirmed via driver disassembly
inPos ++;
break;
case 0xF0: // delay
cmdDelay = songData[inPos];
inPos ++;
break;
case 0xF8: // GS instrument [Twilight driver only]
case 0xF9: // Roland Base Address [Twilight driver only]
case 0xFA: // Roland Parameter [Twilight driver only]
case 0xFB: // Roland Device [Twilight driver only]
cmdDelay = songData[inPos + 0x00];
inPos += 0x03;
break;
case 0xFC: // raw RCP command
cmdDelay = songData[inPos + 0x01];
inPos += 0x04;
break;
case 0xFD: // increment measure ID
//measureID ++;
break;
case 0xFE: // measure quit
// load new measure pointer
inPos = 0x0000;
break;
case 0xFF: // measure end
// increment measure ID + load new measure pointer
//measureID ++;
inPos = 0x0000;
break;
default:
trkEnd = 1;
break;
}
}
trkInf->tickCnt += cmdDelay;
}
return;
}
static UINT8 MidiDelayHandler(FILE_INF* fInf, UINT32* delay)
{
CheckRunningNotes(fInf, delay, &RunNoteCnt, RunNotes);
if (*delay)
{
UINT16 curNote;
for (curNote = 0; curNote < RunNoteCnt; curNote ++)
RunNotes[curNote].remLen -= (UINT16)*delay;
}
return 0x00;
}
static UINT8 WriteFileData(UINT32 dataLen, const UINT8* data, const char* fileName)
{
FILE* hFile;
hFile = fopen(fileName, "wb");
if (hFile == NULL)
{
printf("Error opening %s!\n", fileName);
return 0xFF;
}