long _mm_getfsize(MMSTREAM *mmpat) {
long fsize;
_mm_fseek(mmpat, 0L, SEEK_END);
fsize = _mm_ftell(mmpat);
_mm_fseek(mmpat, 0L, SEEK_SET);
return(fsize);
}
static BOOL
GetBlockHeader (void)
{
/* make sure we're at the right position for reading the
next riff block, no matter how many bytes read */
_mm_fseek (modreader, blocklp + blockln, SEEK_SET);
while (1)
{
_mm_read_UBYTES (blockid, 4, modreader);
blockln = _mm_read_I_ULONG (modreader);
if (_mm_eof (modreader))
{
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
if (memcmp (blockid, SONGID, 4) && memcmp (blockid, INSTID, 4) &&
memcmp (blockid, PATTID, 4))
{
#ifdef MIKMOD_DEBUG
fprintf (stderr, "\rDSM: Skipping unknown block type %4.4s\n", blockid);
#endif
_mm_fseek (modreader, blockln, SEEK_CUR);
}
else
break;
}
blocklp = _mm_ftell (modreader);
return 1;
}
static CHAR *UNI_LoadTitle(void)
{
UBYTE ver;
int posit[3]={304,306,26};
_mm_fseek(modreader,3,SEEK_SET);
ver=_mm_read_UBYTE(modreader);
if(ver=='N') ver='6';
_mm_fseek(modreader,posit[ver-'4'],SEEK_SET);
return readstring();
}
static void pat_read_waveheader(MMSTREAM *mmpat, WaveHeader *hw, int layer)
{
long int pos, bestpos=0;
LayerHeader hl;
ULONG bestfreq, freqdist;
int i;
// read the very first and maybe only sample
pat_read_layerheader(mmpat, &hl);
if( hl.samples > 1 ) {
if( layer ) {
if( layer > hl.samples ) layer = hl.samples; // you don't fool me....
for( i=1; i<layer; i++ ) {
_mm_read_UBYTES((BYTE *)hw, sizeof(WaveHeader), mmpat);
_mm_fseek(mmpat, hw->wave_size, SEEK_CUR);
}
}
else {
bestfreq = C4mHz * 1000; // big enough
for( i=0; i<hl.samples; i++ ) {
pos = _mm_ftell(mmpat);
_mm_read_UBYTES((BYTE *)hw, sizeof(WaveHeader), mmpat);
if( hw->root_frequency > C4mHz )
freqdist = hw->root_frequency - C4mHz;
else
freqdist = 2 * (C4mHz - hw->root_frequency);
if( freqdist < bestfreq ) {
bestfreq = freqdist;
bestpos = pos;
}
_mm_fseek(mmpat, hw->wave_size, SEEK_CUR);
}
// if invalid bestpos, assume the start.
if( bestpos < 0 )
bestpos = 0;
_mm_fseek(mmpat, bestpos, SEEK_SET);
}
}
_mm_read_UBYTES((BYTE *)hw, sizeof(WaveHeader), mmpat);
strncpy(hw->reserved, hl.reserved, 32);
hw->reserved[31] = 0;
if( hw->start_loop >= hw->wave_size ) {
hw->start_loop = 0;
hw->end_loop = 0;
hw->modes &= ~PAT_LOOP; // mask off loop indicator
}
if( hw->end_loop > hw->wave_size )
hw->end_loop = hw->wave_size;
}
/* Loads all patterns of a modfile and converts them into the 3 byte format. */
static BOOL ML_LoadPatterns(void)
{
int t, s, tracks = 0;
if (!AllocPatterns()) {
return 0;
}
if (!AllocTracks()) {
return 0;
}
/* Allocate temporary buffer for loading and converting the patterns */
if (!(patbuf = (MODNOTE *)MikMod_calloc(64U * of.numchn, sizeof(MODNOTE))))
return 0;
/* patterns start here */
_mm_fseek(modreader, 0xA66, SEEK_SET);
for (t = 0; t < of.numpat; t++) {
/* Load the pattern into the temp buffer and convert it */
for (s = 0; s < (64U * of.numchn); s++) {
patbuf[s].a = _mm_read_UBYTE(modreader);
patbuf[s].b = _mm_read_UBYTE(modreader);
patbuf[s].c = _mm_read_UBYTE(modreader);
patbuf[s].d = _mm_read_UBYTE(modreader);
}
for (s = 0; s < of.numchn; s++) {
if (!(of.tracks[tracks++] = ConvertTrack(patbuf + s))) {
return 0;
}
}
}
return 1;
}
BOOL S69_Test(void)
{
UBYTE buf[0x80];
if(!_mm_read_UBYTES(buf,2,modreader))
return 0;
/* look for id */
if(!memcmp(buf,"if",2) || !memcmp(buf,"JN",2)) {
int i;
/* skip song message */
_mm_fseek(modreader,108,SEEK_CUR);
/* sanity checks */
if(_mm_read_UBYTE(modreader) > 64) return 0;
if(_mm_read_UBYTE(modreader) > 128) return 0;
if(_mm_read_UBYTE(modreader) > 127) return 0;
/* check order table */
if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
for(i=0;i<0x80;i++)
if((buf[i]>=0x80)&&(buf[i]!=0xff)) return 0;
/* check tempos table */
if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
for(i=0;i<0x80;i++)
if((!buf[i])||(buf[i]>32)) return 0;
/* check pattern length table */
if(!_mm_read_UBYTES(buf,0x80,modreader)) return 0;
for(i=0;i<0x80;i++)
if(buf[i]>0x3f) return 0;
} else
return 0;
return 1;
}
static BOOL STX_Test(void)
{
UBYTE id[8];
int t;
_mm_fseek(modreader,0x3C,SEEK_SET);
if(!_mm_read_UBYTES(id,4,modreader)) return 0;
if(memcmp(id,"SCRM",4)) return 0;
_mm_fseek(modreader,0x14,SEEK_SET);
if(!_mm_read_UBYTES(id,8,modreader)) return 0;
for(t=0;t<STM_NTRACKERS;t++)
if(!memcmp(id,STM_Signatures[t],8)) return 1;
return 0;
}
BOOL S3M_Test(void)
{
char id[4];
_mm_fseek(modfp,0x2c,SEEK_SET);
if(!fread(id,4,1,modfp)) return 0;
if(!memcmp(id,"SCRM",4)) return 1;
return 0;
}
static BOOL S3M_Test(void)
{
char id[4];
_mm_fseek(0x2c,SEEK_SET);
if(!_mm_read_str(id,4)) return 0;
if(!memcmp(id,"SCRM",4)) return 1;
return 0;
}
static BOOL IMF_Test(void)
{
UBYTE id[4];
_mm_fseek(modreader,0x3c,SEEK_SET);
if(!_mm_read_UBYTES(id,4,modreader)) return 0;
if(!memcmp(id,"IM10",4)) return 1;
return 0;
}
CHAR *DSM_LoadTitle(void)
{
CHAR s[28];
_mm_fseek(modreader,12,SEEK_SET);
if(!_mm_read_UBYTES(s,28,modreader)) return NULL;
return(DupStr(s,28,1));
}
BOOL S3M_Test(void)
{
UBYTE id[4];
_mm_fseek(modreader,0x2c,SEEK_SET);
if(!_mm_read_UBYTES(id,4,modreader)) return 0;
if(!memcmp(id,"SCRM",4)) return 1;
return 0;
}
static CHAR *STX_LoadTitle(void)
{
CHAR s[28];
_mm_fseek(modreader,0,SEEK_SET);
if(!_mm_read_UBYTES(s,20,modreader)) return NULL;
return(DupStr(s,28,1));
}
CHAR *DSM_LoadTitle(void)
{
CHAR s[28];
_mm_fseek(modfp,12,SEEK_SET);
if(!_mm_fread(s,28,1,modfp)) return NULL;
return(DupStr(s,28));
}
CHAR *S69_LoadTitle(void)
{
CHAR s[36];
_mm_fseek(modreader,2,SEEK_SET);
if(!_mm_read_UBYTES(s,36,modreader)) return NULL;
return(DupStr(s,36,1));
}
static BOOL GT2_Test(void)
{
UBYTE magic[3];
_mm_fseek(modreader, 0, SEEK_SET);
if (!_mm_read_UBYTES(magic, 3, modreader)) return 0;
if (magic[0] == 'G' && magic[1] == 'T' && magic[2] == '2') {
return 1;
}
return 0;
}
static CHAR *GT2_LoadTitle(void)
{
CHAR title[33];
_mm_fseek(modreader, 8, SEEK_SET);
if (!_mm_read_UBYTES(title, 32, modreader))
return NULL;
title[32] = 0;
return (DupStr(title, 32, 1));
}
static BOOL STM_Test(void)
{
char str[9],filetype;
_mm_fseek(21,SEEK_SET);
_mm_read_str(str,9);
_mm_read_str(&filetype,1);
if(!memcmp(str,"!SCREAM!",8) || (filetype!=2)) /* STM Module = filetype 2 */
return 0;
return 1;
}
BOOL GetBlockHeader(void)
{
/* make sure we're at the right position for reading the */
/* next riff block, no matter how many bytes read */
_mm_fseek(modfp, blocklp+blockln, SEEK_SET);
while(1)
{ _mm_read_UBYTES(blockid,4,modfp);
blockln = _mm_read_I_ULONG(modfp);
if(_mm_feof(modfp))
{ _mm_errno = MMERR_LOADING_HEADER;
return 0;
}
if(memcmp(blockid,SONGID,4) && memcmp(blockid,INSTID,4) && memcmp(blockid,PATTID,4))
{ /*printf("Skipping unknown block type %4.4s\n",&blockid); */
_mm_fseek(modfp, blockln, SEEK_CUR);
} else break;
}
blocklp = _mm_ftell(modfp);
return 1;
}
static BOOL GT2_Load(BOOL curious)
{
GT_CHUNK *tmp;
_mm_fseek(modreader, 0, SEEK_SET);
while ((tmp = loadChunk()) != NULL) {
#ifdef MIKMOD_DEBUG
/* FIXME: to be completed */
fprintf(stderr, "%c%c%c%c\n", tmp->id[0], tmp->id[1], tmp->id[2], tmp->id[3]);
#endif
freeChunk(tmp);
}
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
static BOOL ASY_Test(void)
{
UBYTE namestring[24], numchn;
CHAR *descr;
/* Read the magic string */
_mm_fseek(modreader, 0, SEEK_SET);
if (!_mm_read_UBYTES(namestring, 24, modreader))
return 0;
/* Test if the string is what we expect */
if (ASY_CheckType(namestring, &numchn, &descr))
return 1;
return 0;
}
/* Load embedded midi information for resonant filters */
static void IT_LoadMidiConfiguration(MREADER* modreader)
{
int i;
memset(filtermacros,0,sizeof(filtermacros));
memset(filtersettings,0,sizeof(filtersettings));
if (modreader) { /* information is embedded in file */
UWORD dat;
CHAR midiline[33];
dat=_mm_read_I_UWORD(modreader);
_mm_fseek(modreader,8*dat+0x120,SEEK_CUR);
/* read midi macros */
for(i=0;i<16;i++) {
LoadMidiString(modreader,midiline);
if((!strncmp(midiline,"F0F00",5))&&
((midiline[5]=='0')||(midiline[5]=='1')))
filtermacros[i]=(midiline[5]-'0')|0x80;
}
/* read standalone filters */
for(i=0x80;i<0x100;i++) {
LoadMidiString(modreader,midiline);
if((!strncmp(midiline,"F0F00",5))&&
((midiline[5]=='0')||(midiline[5]=='1'))) {
filtersettings[i].filter=(midiline[5]-'0')|0x80;
dat=(midiline[6])?(midiline[6]-'0'):0;
if(midiline[7])dat=(dat<<4)|(midiline[7]-'0');
filtersettings[i].inf=(UBYTE)dat;
}
}
} else { /* use default information */
filtermacros[0]=FILT_CUT;
for(i=0x80;i<0x90;i++) {
filtersettings[i].filter=FILT_RESONANT;
filtersettings[i].inf=(i&0x7f)<<3;
}
}
activemacro=0;
for(i=0;i<0x80;i++) {
filtersettings[i].filter=filtermacros[0];
filtersettings[i].inf=i;
}
}
static BOOL MOD_Test(void)
{
int t;
char id[4];
_mm_fseek(MODULEHEADERSIZE-4,SEEK_SET);
if(!_mm_read_str(id,4)) return 0;
/* find out which ID string */
for(t=0;t<10;t++){
if(!memcmp(id,modtypes[t].id,4)) return 1;
}
return 0;
}
static void putheader(void)
{
ULONG rflen = 36;
if (md_mode&DMODE_FLOAT)
rflen += 2 + 12; /* FmtExt + "fact" chunk sizes */
rflen += dumpsize;
_mm_fseek(wavout,0,SEEK_SET);
_mm_write_string("RIFF",wavout);
_mm_write_I_ULONG(rflen,wavout);
_mm_write_string("WAVEfmt ",wavout);
_mm_write_I_ULONG((md_mode&DMODE_FLOAT)?18:16,wavout); /* length of this RIFF block crap */
_mm_write_I_UWORD((md_mode&DMODE_FLOAT)? 3:1,wavout); /* WAVE_FORMAT_PCM :1, WAVE_FORMAT_IEEE_FLOAT :3 */
_mm_write_I_UWORD((md_mode&DMODE_STEREO)?2:1,wavout);
_mm_write_I_ULONG(md_mixfreq,wavout);
_mm_write_I_ULONG(md_mixfreq * ((md_mode&DMODE_STEREO)?2:1) *
((md_mode&DMODE_FLOAT)? 4:
(md_mode&DMODE_16BITS)?2:1), wavout);
/* block alignment (8/16 bit) */
_mm_write_I_UWORD(((md_mode&DMODE_FLOAT)?4:(md_mode&DMODE_16BITS)?2:1)*
((md_mode&DMODE_STEREO)?2:1),wavout);
_mm_write_I_UWORD((md_mode&DMODE_FLOAT)?32:(md_mode&DMODE_16BITS)?16:8,wavout);
if (md_mode&DMODE_FLOAT) {
_mm_write_I_UWORD(0,wavout); /* 0 byte of FmtExt */
_mm_write_string("fact",wavout);
_mm_write_I_ULONG(4,wavout);
_mm_write_I_ULONG(dumpsize / ((md_mode&DMODE_STEREO)?2:1) / /* # of samples written */
((md_mode&DMODE_FLOAT)? 4:
(md_mode&DMODE_16BITS)?2:1), wavout);
}
_mm_write_string("data",wavout);
_mm_write_I_ULONG(dumpsize,wavout);
}
BOOL IT_Load(BOOL curious)
{
int t,u,lp;
INSTRUMENT *d;
SAMPLE *q;
BOOL compressed=0;
numtrk=0;
filters=0;
/* try to read module header */
_mm_read_I_ULONG(modreader); /* kill the 4 byte header */
_mm_read_string(mh->songname,26,modreader);
_mm_read_UBYTES(mh->blank01,2,modreader);
mh->ordnum =_mm_read_I_UWORD(modreader);
mh->insnum =_mm_read_I_UWORD(modreader);
mh->smpnum =_mm_read_I_UWORD(modreader);
mh->patnum =_mm_read_I_UWORD(modreader);
mh->cwt =_mm_read_I_UWORD(modreader);
mh->cmwt =_mm_read_I_UWORD(modreader);
mh->flags =_mm_read_I_UWORD(modreader);
mh->special =_mm_read_I_UWORD(modreader);
mh->globvol =_mm_read_UBYTE(modreader);
mh->mixvol =_mm_read_UBYTE(modreader);
mh->initspeed =_mm_read_UBYTE(modreader);
mh->inittempo =_mm_read_UBYTE(modreader);
mh->pansep =_mm_read_UBYTE(modreader);
mh->zerobyte =_mm_read_UBYTE(modreader);
mh->msglength =_mm_read_I_UWORD(modreader);
mh->msgoffset =_mm_read_I_ULONG(modreader);
_mm_read_UBYTES(mh->blank02,4,modreader);
_mm_read_UBYTES(mh->pantable,64,modreader);
_mm_read_UBYTES(mh->voltable,64,modreader);
if(_mm_eof(modreader)) {
_mm_errno=MMERR_LOADING_HEADER;
return 0;
}
/* set module variables */
of.songname = DupStr(mh->songname,26,0); /* make a cstr of songname */
of.reppos = 0;
of.numpat = mh->patnum;
of.numins = mh->insnum;
of.numsmp = mh->smpnum;
of.initspeed = mh->initspeed;
of.inittempo = mh->inittempo;
of.initvolume = mh->globvol;
of.flags |= UF_BGSLIDES|UF_ARPMEM;
if(mh->songname[25]) {
of.numvoices=1+mh->songname[25];
#ifdef MIKMOD_DEBUG
fprintf(stderr,"Embedded IT limitation to %d voices\n",of.numvoices);
#endif
}
/* set the module type */
/* 2.17 : IT 2.14p4 */
/* 2.16 : IT 2.14p3 with resonant filters */
/* 2.15 : IT 2.14p3 (improved compression) */
if((mh->cwt<=0x219)&&(mh->cwt>=0x217))
of.modtype=strdup(IT_Version[mh->cmwt<0x214?4:5]);
else if (mh->cwt>=0x215)
of.modtype=strdup(IT_Version[mh->cmwt<0x214?2:3]);
else {
of.modtype = strdup(IT_Version[mh->cmwt<0x214?0:1]);
of.modtype[mh->cmwt<0x214?15:26] = (mh->cwt>>8)+'0';
of.modtype[mh->cmwt<0x214?17:28] = ((mh->cwt>>4)&0xf)+'0';
of.modtype[mh->cmwt<0x214?18:29] = ((mh->cwt)&0xf)+'0';
}
if(mh->flags&8)
of.flags|=(UF_XMPERIODS | UF_LINEAR);
if((mh->cwt>=0x106)&&(mh->flags&16))
old_effect=1;
else
old_effect=0;
/* set panning positions */
for(t=0;t<64;t++) {
mh->pantable[t]&=0x7f;
if(mh->pantable[t]<64)
of.panning[t]=mh->pantable[t]<<2;
else if(mh->pantable[t]==64)
of.panning[t]=255;
else if(mh->pantable[t]==100)
of.panning[t]=PAN_SURROUND;
else if(mh->pantable[t]==127)
of.panning[t]=PAN_CENTER;
else {
_mm_errno=MMERR_LOADING_HEADER;
return 0;
}
}
/* set channel volumes */
memcpy(of.chanvol,mh->voltable,64);
/* read the order data */
if(!AllocPositions(mh->ordnum)) return 0;
if(!(origpositions=_mm_calloc(mh->ordnum,sizeof(UWORD)))) return 0;
for(t=0;t<mh->ordnum;t++) {
origpositions[t]=_mm_read_UBYTE(modreader);
if((origpositions[t]>mh->patnum)&&(origpositions[t]<254))
origpositions[t]=255;
}
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
poslookupcnt=(UBYTE)mh->ordnum;
S3MIT_CreateOrders(curious);
if(!(paraptr=(ULONG*)_mm_malloc((mh->insnum+mh->smpnum+of.numpat)*
sizeof(ULONG)))) return 0;
/* read the instrument, sample, and pattern parapointers */
_mm_read_I_ULONGS(paraptr,mh->insnum+mh->smpnum+of.numpat,modreader);
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
/* Check for and load midi information for resonant filters */
if(mh->cmwt>=0x216) {
if(mh->special&8) {
IT_LoadMidiConfiguration(modreader);
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else
IT_LoadMidiConfiguration(NULL);
filters=1;
}
/* Check for and load song comment */
if((mh->special&1)&&(mh->cwt>=0x104)&&(mh->msglength)) {
_mm_fseek(modreader,(long)(mh->msgoffset),SEEK_SET);
if(!ReadComment(mh->msglength)) return 0;
}
if(!(mh->flags&4)) of.numins=of.numsmp;
if(!AllocSamples()) return 0;
if(!AllocLinear()) return 0;
/* Load all samples */
q = of.samples;
for(t=0;t<mh->smpnum;t++) {
ITSAMPLE s;
/* seek to sample position */
_mm_fseek(modreader,(long)(paraptr[mh->insnum+t]+4),SEEK_SET);
/* load sample info */
_mm_read_string(s.filename,12,modreader);
s.zerobyte = _mm_read_UBYTE(modreader);
s.globvol = _mm_read_UBYTE(modreader);
s.flag = _mm_read_UBYTE(modreader);
s.volume = _mm_read_UBYTE(modreader);
_mm_read_string(s.sampname,26,modreader);
s.convert = _mm_read_UBYTE(modreader);
s.panning = _mm_read_UBYTE(modreader);
s.length = _mm_read_I_ULONG(modreader);
s.loopbeg = _mm_read_I_ULONG(modreader);
s.loopend = _mm_read_I_ULONG(modreader);
s.c5spd = _mm_read_I_ULONG(modreader);
s.susbegin = _mm_read_I_ULONG(modreader);
s.susend = _mm_read_I_ULONG(modreader);
s.sampoffset = _mm_read_I_ULONG(modreader);
s.vibspeed = _mm_read_UBYTE(modreader);
s.vibdepth = _mm_read_UBYTE(modreader);
s.vibrate = _mm_read_UBYTE(modreader);
s.vibwave = _mm_read_UBYTE(modreader);
/* Generate an error if c5spd is > 512k, or samplelength > 256 megs
(nothing would EVER be that high) */
if(_mm_eof(modreader)||(s.c5spd>0x7ffffL)||(s.length>0xfffffffUL)||
(s.loopbeg>0xfffffffUL)||(s.loopend>0xfffffffUL)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
q->samplename = DupStr(s.sampname,26,0);
q->speed = s.c5spd / 2;
q->panning = ((s.panning&127)==64)?255:(s.panning&127)<<2;
q->length = s.length;
q->loopstart = s.loopbeg;
q->loopend = s.loopend;
q->volume = s.volume;
q->globvol = s.globvol;
q->seekpos = s.sampoffset;
/* Convert speed to XM linear finetune */
if(of.flags&UF_LINEAR)
q->speed=speed_to_finetune(s.c5spd,t);
if(s.panning&128) q->flags|=SF_OWNPAN;
if(s.vibrate) {
q->vibflags |= AV_IT;
q->vibtype = s.vibwave;
q->vibsweep = s.vibrate * 2;
q->vibdepth = s.vibdepth;
q->vibrate = s.vibspeed;
}
if(s.flag&2) q->flags|=SF_16BITS;
if((s.flag&8)&&(mh->cwt>=0x214)) {
q->flags|=SF_ITPACKED;
compressed=1;
}
if(s.flag&16) q->flags|=SF_LOOP;
if(s.flag&64) q->flags|=SF_BIDI;
if(mh->cwt>=0x200) {
if(s.convert&1) q->flags|=SF_SIGNED;
if(s.convert&4) q->flags|=SF_DELTA;
}
q++;
}
/* Load instruments if instrument mode flag enabled */
if(mh->flags&4) {
if(!AllocInstruments()) return 0;
d=of.instruments;
of.flags|=UF_NNA|UF_INST;
for(t=0;t<mh->insnum;t++) {
ITINSTHEADER ih;
/* seek to instrument position */
_mm_fseek(modreader,paraptr[t]+4,SEEK_SET);
/* load instrument info */
_mm_read_string(ih.filename,12,modreader);
ih.zerobyte = _mm_read_UBYTE(modreader);
if(mh->cwt<0x200) {
/* load IT 1.xx inst header */
ih.volflg = _mm_read_UBYTE(modreader);
ih.volbeg = _mm_read_UBYTE(modreader);
ih.volend = _mm_read_UBYTE(modreader);
ih.volsusbeg = _mm_read_UBYTE(modreader);
ih.volsusend = _mm_read_UBYTE(modreader);
_mm_read_I_UWORD(modreader);
ih.fadeout = _mm_read_I_UWORD(modreader);
ih.nna = _mm_read_UBYTE(modreader);
ih.dnc = _mm_read_UBYTE(modreader);
} else {
/* Read IT200+ header */
ih.nna = _mm_read_UBYTE(modreader);
ih.dct = _mm_read_UBYTE(modreader);
ih.dca = _mm_read_UBYTE(modreader);
ih.fadeout = _mm_read_I_UWORD(modreader);
ih.ppsep = _mm_read_UBYTE(modreader);
ih.ppcenter = _mm_read_UBYTE(modreader);
ih.globvol = _mm_read_UBYTE(modreader);
ih.chanpan = _mm_read_UBYTE(modreader);
ih.rvolvar = _mm_read_UBYTE(modreader);
ih.rpanvar = _mm_read_UBYTE(modreader);
}
ih.trkvers = _mm_read_I_UWORD(modreader);
ih.numsmp = _mm_read_UBYTE(modreader);
_mm_read_UBYTE(modreader);
_mm_read_string(ih.name,26,modreader);
_mm_read_UBYTES(ih.blank01,6,modreader);
_mm_read_I_UWORDS(ih.samptable,ITNOTECNT,modreader);
if(mh->cwt<0x200) {
/* load IT 1xx volume envelope */
_mm_read_UBYTES(ih.volenv,200,modreader);
for(lp=0;lp<ITENVCNT;lp++) {
ih.oldvoltick[lp] = _mm_read_UBYTE(modreader);
ih.volnode[lp] = _mm_read_UBYTE(modreader);
}
} else {
/* load IT 2xx volume, pan and pitch envelopes */
ih.volflg =_mm_read_UBYTE(modreader);
ih.volpts =_mm_read_UBYTE(modreader);
ih.volbeg =_mm_read_UBYTE(modreader);
ih.volend =_mm_read_UBYTE(modreader);
ih.volsusbeg=_mm_read_UBYTE(modreader);
ih.volsusend=_mm_read_UBYTE(modreader);
for(lp=0;lp<ITENVCNT;lp++) {
ih.volnode[lp]=_mm_read_UBYTE(modreader);
ih.voltick[lp]=_mm_read_I_UWORD(modreader);
}
_mm_read_UBYTE(modreader);
ih.panflg =_mm_read_UBYTE(modreader);
ih.panpts =_mm_read_UBYTE(modreader);
ih.panbeg =_mm_read_UBYTE(modreader);
ih.panend =_mm_read_UBYTE(modreader);
ih.pansusbeg=_mm_read_UBYTE(modreader);
ih.pansusend=_mm_read_UBYTE(modreader);
for(lp=0;lp<ITENVCNT;lp++) {
ih.pannode[lp]=_mm_read_SBYTE(modreader);
ih.pantick[lp]=_mm_read_I_UWORD(modreader);
}
_mm_read_UBYTE(modreader);
ih.pitflg =_mm_read_UBYTE(modreader);
ih.pitpts =_mm_read_UBYTE(modreader);
ih.pitbeg =_mm_read_UBYTE(modreader);
ih.pitend =_mm_read_UBYTE(modreader);
ih.pitsusbeg=_mm_read_UBYTE(modreader);
ih.pitsusend=_mm_read_UBYTE(modreader);
for(lp=0;lp < ITENVCNT; lp++) {
ih.pitnode[lp]=_mm_read_SBYTE(modreader);
ih.pittick[lp]=_mm_read_I_UWORD(modreader);
}
_mm_read_UBYTE(modreader);
}
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
d->volflg|=EF_VOLENV;
d->insname = DupStr(ih.name,26,0);
d->nnatype = ih.nna & NNA_MASK;
if(mh->cwt<0x200) {
d->volfade=ih.fadeout<< 6;
if(ih.dnc) {
d->dct=DCT_NOTE;
d->dca=DCA_CUT;
}
if(ih.volflg&1) d->volflg|=EF_ON;
if(ih.volflg&2) d->volflg|=EF_LOOP;
if(ih.volflg&4) d->volflg|=EF_SUSTAIN;
/* XM conversion of IT envelope Array */
d->volbeg = ih.volbeg;
d->volend = ih.volend;
d->volsusbeg = ih.volsusbeg;
d->volsusend = ih.volsusend;
if(ih.volflg&1) {
for(u=0;u<ITENVCNT;u++)
if(ih.oldvoltick[d->volpts]!=0xff) {
d->volenv[d->volpts].val=(ih.volnode[d->volpts]<<2);
d->volenv[d->volpts].pos=ih.oldvoltick[d->volpts];
d->volpts++;
} else
break;
}
} else {
d->panning=((ih.chanpan&127)==64)?255:(ih.chanpan&127)<<2;
if(!(ih.chanpan&128)) d->flags|=IF_OWNPAN;
if(!(ih.ppsep & 128)) {
d->pitpansep=ih.ppsep<<2;
d->pitpancenter=ih.ppcenter;
d->flags|=IF_PITCHPAN;
}
d->globvol=ih.globvol>>1;
d->volfade=ih.fadeout<<5;
d->dct =ih.dct;
d->dca =ih.dca;
if(mh->cwt>=0x204) {
d->rvolvar = ih.rvolvar;
d->rpanvar = ih.rpanvar;
}
if(ih.volflg&1) d->volflg|=EF_ON;
if(ih.volflg&2) d->volflg|=EF_LOOP;
if(ih.volflg&4) d->volflg|=EF_SUSTAIN;
d->volpts=ih.volpts;
d->volbeg=ih.volbeg;
d->volend=ih.volend;
d->volsusbeg=ih.volsusbeg;
d->volsusend=ih.volsusend;
for(u=0;u<ih.volpts;u++)
d->volenv[u].pos=ih.voltick[u]; if((d->volflg&EF_ON)&&(d->volpts<2))
d->volflg&=~EF_ON;
for(u=0;u<ih.volpts;u++)
d->volenv[u].val=(ih.volnode[u]<<2);
if(ih.panflg&1) d->panflg|=EF_ON;
if(ih.panflg&2) d->panflg|=EF_LOOP;
if(ih.panflg&4) d->panflg|=EF_SUSTAIN;
d->panpts=ih.panpts;
d->panbeg=ih.panbeg;
d->panend=ih.panend;
d->pansusbeg=ih.pansusbeg;
d->pansusend=ih.pansusend;
for(u=0;u<ih.panpts;u++)
d->panenv[u].pos=ih.pantick[u];
if((d->panflg&EF_ON)&&(d->panpts<2))
d->panflg&=~EF_ON;
for(u=0;u<ih.panpts;u++)
d->panenv[u].val=ih.pannode[u]==32?255:(ih.pannode[u]+32)<<2;
if(ih.pitflg&1) d->pitflg|=EF_ON;
if(ih.pitflg&2) d->pitflg|=EF_LOOP;
if(ih.pitflg&4) d->pitflg|=EF_SUSTAIN;
d->pitpts=ih.pitpts;
d->pitbeg=ih.pitbeg;
d->pitend=ih.pitend;
d->pitsusbeg=ih.pitsusbeg;
d->pitsusend=ih.pitsusend;
for(u=0;u<ih.pitpts;u++)
d->pitenv[u].pos=ih.pittick[u];
if((d->pitflg&EF_ON)&&(d->pitpts<2))
d->pitflg&=~EF_ON;
for(u=0;u<ih.pitpts;u++)
d->pitenv[u].val=ih.pitnode[u]+32;
if(ih.pitflg&0x80) {
/* filter envelopes not supported yet */
d->pitflg&=~EF_ON;
ih.pitpts=ih.pitbeg=ih.pitend=0;
#ifdef MIKMOD_DEBUG
{
static int warn=0;
if(!warn)
fputs("\rFilter envelopes not supported yet\n",stderr);
warn=1;
}
#endif
}
}
for(u=0;u<ITNOTECNT;u++) {
d->samplenote[u]=(ih.samptable[u]&255);
d->samplenumber[u]=
(ih.samptable[u]>>8)?((ih.samptable[u]>>8)-1):0xffff;
if(d->samplenumber[u]>=of.numsmp)
d->samplenote[u]=255;
else if (of.flags&UF_LINEAR) {
int note=(int)d->samplenote[u]+noteindex[d->samplenumber[u]];
d->samplenote[u]=(note<0)?0:(note>255?255:note);
}
}
d++;
}
} else if(of.flags & UF_LINEAR) {
BOOL S3M_Load(BOOL curious)
{
int t,u,track = 0;
SAMPLE *q;
UBYTE pan[32];
/* try to read module header */
_mm_read_string(mh->songname,28,modreader);
mh->t1a =_mm_read_UBYTE(modreader);
mh->type =_mm_read_UBYTE(modreader);
_mm_read_UBYTES(mh->unused1,2,modreader);
mh->ordnum =_mm_read_I_UWORD(modreader);
mh->insnum =_mm_read_I_UWORD(modreader);
mh->patnum =_mm_read_I_UWORD(modreader);
mh->flags =_mm_read_I_UWORD(modreader);
mh->tracker =_mm_read_I_UWORD(modreader);
mh->fileformat =_mm_read_I_UWORD(modreader);
_mm_read_string(mh->scrm,4,modreader);
mh->mastervol =_mm_read_UBYTE(modreader);
mh->initspeed =_mm_read_UBYTE(modreader);
mh->inittempo =_mm_read_UBYTE(modreader);
mh->mastermult =_mm_read_UBYTE(modreader);
mh->ultraclick =_mm_read_UBYTE(modreader);
mh->pantable =_mm_read_UBYTE(modreader);
_mm_read_UBYTES(mh->unused2,8,modreader);
mh->special =_mm_read_I_UWORD(modreader);
_mm_read_UBYTES(mh->channels,32,modreader);
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
/* set module variables */
of.songname = DupStr(mh->songname,28,0);
of.numpat = mh->patnum;
of.reppos = 0;
of.numins = of.numsmp = mh->insnum;
of.initspeed = mh->initspeed;
of.inittempo = mh->inittempo;
of.initvolume = mh->mastervol<<1;
of.flags |= UF_ARPMEM;
if((mh->tracker==0x1300)||(mh->flags&64))
of.flags|=UF_S3MSLIDES;
/* read the order data */
if(!AllocPositions(mh->ordnum)) return 0;
if(!(origpositions=_mm_calloc(mh->ordnum,sizeof(UWORD)))) return 0;
for(t=0;t<mh->ordnum;t++) {
origpositions[t]=_mm_read_UBYTE(modreader);
if((origpositions[t]>=mh->patnum)&&(origpositions[t]<254))
origpositions[t]=255/*mh->patnum-1*/;
}
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
poslookupcnt=(UBYTE)mh->ordnum;
S3MIT_CreateOrders(curious);
if(!(paraptr=(UWORD*)_mm_malloc((of.numins+of.numpat)*sizeof(UWORD))))
return 0;
/* read the instrument+pattern parapointers */
_mm_read_I_UWORDS(paraptr,of.numins+of.numpat,modreader);
if(mh->pantable==252) {
/* read the panning table (ST 3.2 addition. See below for further
portions of channel panning [past reampper]). */
_mm_read_UBYTES(pan,32,modreader);
}
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
/* load samples */
if(!AllocSamples()) return 0;
q = of.samples;
for(t=0;t<of.numins;t++) {
S3MSAMPLE s;
/* seek to instrument position */
_mm_fseek(modreader,((long)paraptr[t])<<4,SEEK_SET);
/* and load sample info */
s.type =_mm_read_UBYTE(modreader);
_mm_read_string(s.filename,12,modreader);
s.memsegh =_mm_read_UBYTE(modreader);
s.memsegl =_mm_read_I_UWORD(modreader);
s.length =_mm_read_I_ULONG(modreader);
s.loopbeg =_mm_read_I_ULONG(modreader);
s.loopend =_mm_read_I_ULONG(modreader);
s.volume =_mm_read_UBYTE(modreader);
s.dsk =_mm_read_UBYTE(modreader);
s.pack =_mm_read_UBYTE(modreader);
s.flags =_mm_read_UBYTE(modreader);
s.c2spd =_mm_read_I_ULONG(modreader);
_mm_read_UBYTES(s.unused,12,modreader);
_mm_read_string(s.sampname,28,modreader);
_mm_read_string(s.scrs,4,modreader);
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
q->samplename = DupStr(s.sampname,28,0);
q->speed = s.c2spd;
q->length = s.length;
q->loopstart = s.loopbeg>s.length?s.length:s.loopbeg;
q->loopend = s.loopend>s.length?s.length:s.loopend;
q->volume = s.volume;
q->seekpos = (((long)s.memsegh)<<16|s.memsegl)<<4;
if(s.flags&1) q->flags |= SF_LOOP;
if(s.flags&4) q->flags |= SF_16BITS;
if(mh->fileformat==1) q->flags |= SF_SIGNED;
/* don't load sample if it doesn't have the SCRS tag */
if(memcmp(s.scrs,"SCRS",4)) q->length = 0;
q++;
}
/* determine the number of channels actually used. */
of.numchn = 0;
memset(remap,-1,32*sizeof(UBYTE));
for(t=0;t<of.numpat;t++) {
/* seek to pattern position (+2 skip pattern length) */
_mm_fseek(modreader,(long)((paraptr[of.numins+t])<<4)+2,SEEK_SET);
if(S3M_GetNumChannels()) return 0;
}
/* then we can decide the module type */
t=mh->tracker>>12;
if((!t)||(t>3))
t=NUMTRACKERS-1; /* unknown tracker */
else {
if(mh->tracker>=0x3217)
t=NUMTRACKERS+1; /* IT 2.14p4 */
else if(mh->tracker>=0x3216)
t=NUMTRACKERS; /* IT 2.14p3 */
else t--;
}
of.modtype = strdup(S3M_Version[t]);
if(t<NUMTRACKERS) {
of.modtype[numeric[t]] = ((mh->tracker>>8) &0xf)+'0';
of.modtype[numeric[t]+2] = ((mh->tracker>>4)&0xf)+'0';
of.modtype[numeric[t]+3] = ((mh->tracker)&0xf)+'0';
}
BOOL
FAR_Load (BOOL curious)
{
int t, u, tracks = 0;
SAMPLE *q;
FARSAMPLE s;
FARNOTE *crow;
UBYTE smap[8];
/* try to read module header (first part) */
_mm_read_UBYTES (mh1->id, 4, modreader);
_mm_read_SBYTES (mh1->songname, 40, modreader);
_mm_read_SBYTES (mh1->blah, 3, modreader);
mh1->headerlen = _mm_read_I_UWORD (modreader);
mh1->version = _mm_read_UBYTE (modreader);
_mm_read_UBYTES (mh1->onoff, 16, modreader);
_mm_read_UBYTES (mh1->edit1, 9, modreader);
mh1->speed = _mm_read_UBYTE (modreader);
_mm_read_UBYTES (mh1->panning, 16, modreader);
_mm_read_UBYTES (mh1->edit2, 4, modreader);
mh1->stlen = _mm_read_I_UWORD (modreader);
/* init modfile data */
of.modtype = strdup (FAR_Version);
of.songname = DupStr (mh1->songname, 40, 1);
of.numchn = 16;
of.initspeed = mh1->speed;
of.inittempo = 80;
of.reppos = 0;
for (t = 0; t < 16; t++)
of.panning[t] = mh1->panning[t] << 4;
/* read songtext into comment field */
if (mh1->stlen)
if (!ReadComment (mh1->stlen))
return 0;
/* try to read module header (second part) */
_mm_read_UBYTES (mh2->orders, 256, modreader);
mh2->numpat = _mm_read_UBYTE (modreader);
mh2->snglen = _mm_read_UBYTE (modreader);
mh2->loopto = _mm_read_UBYTE (modreader);
_mm_read_I_UWORDS (mh2->patsiz, 256, modreader);
of.numpos = mh2->snglen;
if (!AllocPositions (of.numpos))
return 0;
for (t = 0; t < of.numpos; t++)
{
if (mh2->orders[t] == 0xff)
break;
of.positions[t] = mh2->orders[t];
}
/* count number of patterns stored in file */
of.numpat = 0;
for (t = 0; t < 256; t++)
if (mh2->patsiz[t])
if ((t + 1) > of.numpat)
of.numpat = t + 1;
of.numtrk = of.numpat * of.numchn;
/* seek across eventual new data */
_mm_fseek (modreader, mh1->headerlen - (869 + mh1->stlen), SEEK_CUR);
/* alloc track and pattern structures */
if (!AllocTracks ())
return 0;
if (!AllocPatterns ())
return 0;
for (t = 0; t < of.numpat; t++)
{
UBYTE rows = 0;
memset (pat, 0, 256 * 16 * 4 * sizeof (FARNOTE));
if (mh2->patsiz[t])
{
rows = _mm_read_UBYTE (modreader);
/* tempo = */ _mm_read_UBYTE (modreader);
crow = pat;
/* file often allocates 64 rows even if there are less in pattern */
if (mh2->patsiz[t] < 2 + (rows * 16 * 4))
{
_mm_errno = MMERR_LOADING_PATTERN;
return 0;
}
for (u = (mh2->patsiz[t] - 2) / 4; u; u--, crow++)
{
crow->note = _mm_read_UBYTE (modreader);
crow->ins = _mm_read_UBYTE (modreader);
crow->vol = _mm_read_UBYTE (modreader);
crow->eff = _mm_read_UBYTE (modreader);
}
if (_mm_eof (modreader))
{
_mm_errno = MMERR_LOADING_PATTERN;
return 0;
}
crow = pat;
of.pattrows[t] = rows;
for (u = 16; u; u--, crow++)
if (!(of.tracks[tracks++] = FAR_ConvertTrack (crow, rows)))
{
_mm_errno = MMERR_LOADING_PATTERN;
return 0;
}
}
else
tracks += 16;
}
/* read sample map */
if (!_mm_read_UBYTES (smap, 8, modreader))
{
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
/* count number of samples used */
of.numins = 0;
for (t = 0; t < 64; t++)
if (smap[t >> 3] & (1 << (t & 7)))
of.numins = t + 1;
of.numsmp = of.numins;
/* alloc sample structs */
if (!AllocSamples ())
return 0;
q = of.samples;
for (t = 0; t < of.numsmp; t++)
{
q->speed = 8363;
q->flags = SF_SIGNED;
if (smap[t >> 3] & (1 << (t & 7)))
{
_mm_read_SBYTES (s.samplename, 32, modreader);
s.length = _mm_read_I_ULONG (modreader);
s.finetune = _mm_read_UBYTE (modreader);
s.volume = _mm_read_UBYTE (modreader);
s.reppos = _mm_read_I_ULONG (modreader);
s.repend = _mm_read_I_ULONG (modreader);
s.type = _mm_read_UBYTE (modreader);
s.loop = _mm_read_UBYTE (modreader);
q->samplename = DupStr (s.samplename, 32, 1);
q->length = s.length;
q->loopstart = s.reppos;
q->loopend = s.repend;
q->volume = s.volume << 2;
if (s.type & 1)
q->flags |= SF_16BITS;
if (s.loop & 8)
q->flags |= SF_LOOP;
q->seekpos = _mm_ftell (modreader);
_mm_fseek (modreader, q->length, SEEK_CUR);
}
else
q->samplename = DupStr (NULL, 0, 0);
q++;
}
static BOOL ASY_Load(BOOL curious)
{
int t;
SAMPLE *q;
MSAMPINFO *s;
CHAR *descr=asylum;
ULONG seekpos;
// no title in asylum amf files :(
strcpy(mh->songname, "");
_mm_fseek(modreader, 0x23, SEEK_SET);
mh->num_patterns = _mm_read_UBYTE(modreader);
mh->num_orders = _mm_read_UBYTE(modreader);
// skip unknown byte
_mm_skip_BYTE(modreader);
_mm_read_UBYTES(mh->positions, 256, modreader);
/* read samples headers*/
for (t = 0; t < 64; t++) {
s = &mh->samples[t];
_mm_fseek(modreader, 0x126 + (t*37), SEEK_SET);
_mm_read_string(s->samplename, 22, modreader);
s->samplename[21] = 0; /* just in case */
s->finetune = _mm_read_UBYTE(modreader);
s->volume = _mm_read_UBYTE(modreader);
_mm_skip_BYTE(modreader); // skip unknown byte
s->length = _mm_read_I_ULONG(modreader);
s->reppos = _mm_read_I_ULONG(modreader);
s->replen = _mm_read_I_ULONG(modreader);
}
if (_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
/* set module variables */
of.initspeed = 6;
of.inittempo = 125;
of.numchn = 8;
modtype = 0;
of.songname = DupStr(mh->songname, 21, 1);
of.numpos = mh->num_orders;
of.reppos = 0;
of.numpat = mh->num_patterns;
of.numtrk = of.numpat * of.numchn;
/* Copy positions (orders) */
if (!AllocPositions(of.numpos))
return 0;
for (t = 0; t < of.numpos; t++) {
of.positions[t] = mh->positions[t];
}
/* Finally, init the sampleinfo structures */
of.numins = 31;
of.numsmp = 31;
if (!AllocSamples())
return 0;
s = mh->samples;
q = of.samples;
seekpos = 2662+(2048*(of.numpat));
for (t = 0; t < of.numins; t++) {
/* convert the samplename */
q->samplename = DupStr(s->samplename, 23, 1);
/* init the sampleinfo variables */
q->speed = finetune[s->finetune & 0xf];
q->volume = s->volume & 0x7f;
q->loopstart = (ULONG)s->reppos;
q->loopend = (ULONG)q->loopstart + (s->replen);
q->length = (ULONG)s->length;
q->flags = SF_SIGNED;
q->seekpos = seekpos;
seekpos += q->length;
if ((s->replen) > 2) {
q->flags |= SF_LOOP;
}
/* fix replen if repend > length */
if (q->loopend > q->length)
q->loopend = q->length;
s++;
q++;
}
of.modtype = StrDup(descr);
if (!ML_LoadPatterns())
return 0;
return 1;
}
BOOL OKT_Load(BOOL curious)
{
UBYTE id[4];
ULONG len;
ULONG fp;
BOOL seen_cmod = 0, seen_samp = 0, seen_slen = 0, seen_plen = 0, seen_patt
= 0, seen_spee = 0;
int patnum = 0, insnum = 0;
/* skip OKTALYZER header */
_mm_fseek(modreader, 8, SEEK_SET);
of.songname = strdup("");
of.modtype = strdup("Amiga Oktalyzer");
of.numpos = of.reppos = 0;
/* default values */
of.initspeed = 6;
of.inittempo = 125;
while (1) {
/* read block header */
_mm_read_UBYTES(id, 4, modreader);
len = _mm_read_M_ULONG(modreader);
if (_mm_eof(modreader))
break;
fp = _mm_ftell(modreader);
if (!memcmp(id, "CMOD", 4)) {
if (!seen_cmod) {
OKT_doCMOD();
seen_cmod = 1;
} else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id, "SAMP", 4)) {
if (!seen_samp && OKT_doSAMP(len))
seen_samp = 1;
else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id, "SPEE", 4)) {
if (!seen_spee) {
OKT_doSPEE();
seen_spee = 1;
} else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id, "SLEN", 4)) {
if (!seen_slen) {
OKT_doSLEN();
seen_slen = 1;
} else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id, "PLEN", 4)) {
if (!seen_plen) {
OKT_doPLEN();
seen_plen = 1;
} else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id, "PATT", 4)) {
if (!seen_plen) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
if (!seen_patt && OKT_doPATT())
seen_patt = 1;
else {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
} else if (!memcmp(id,"PBOD", 4)) {
/* need to know numpat and numchn */
if (!seen_slen || !seen_cmod || (patnum >= of.numpat)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
if (!OKT_doPBOD(patnum++)) {
_mm_errno = MMERR_LOADING_PATTERN;
return 0;
}
} else if (!memcmp(id,"SBOD",4)) {
/* need to know numsmp */
if (!seen_samp) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
while ((insnum < of.numins) && !of.samples[insnum].length)
insnum++;
if (insnum >= of.numins) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
OKT_doSBOD(insnum++);
}
/* goto next block start position */
_mm_fseek(modreader, fp + len, SEEK_SET);
}
if (!seen_cmod || !seen_samp || !seen_patt ||
!seen_slen || !seen_plen || (patnum != of.numpat)) {
_mm_errno = MMERR_LOADING_HEADER;
return 0;
}
return 1;
}
static BOOL S3M_Load(void)
{
int t,u,track=0;
INSTRUMENT *d;
SAMPLE *q;
UBYTE isused[16];
UBYTE pan[32];
/* try to read module header */
_mm_read_str(mh_s3m->songname,28);
mh_s3m->t1a =_mm_read_UBYTE();
mh_s3m->type =_mm_read_UBYTE();
_mm_read_UBYTES(mh_s3m->unused1,2);
mh_s3m->ordnum =_mm_read_I_UWORD();
mh_s3m->insnum =_mm_read_I_UWORD();
mh_s3m->patnum =_mm_read_I_UWORD();
mh_s3m->flags =_mm_read_I_UWORD();
mh_s3m->tracker =_mm_read_I_UWORD();
mh_s3m->fileformat =_mm_read_I_UWORD();
_mm_read_str(mh_s3m->scrm,4);
mh_s3m->mastervol =_mm_read_UBYTE();
mh_s3m->initspeed =_mm_read_UBYTE();
mh_s3m->inittempo =_mm_read_UBYTE();
mh_s3m->mastermult =_mm_read_UBYTE();
mh_s3m->ultraclick =_mm_read_UBYTE();
mh_s3m->pantable =_mm_read_UBYTE();
_mm_read_UBYTES(mh_s3m->unused2,8);
mh_s3m->special =_mm_read_I_UWORD();
_mm_read_UBYTES(mh_s3m->channels,32);
if(modpos > modsize){
gModPlayerErrorMessage=ERROR_LOADING_HEADER;
return 0;
}
/* set module variables */
of.modtype=strdup(S3M_Version);
of.songname=DupStr(mh_s3m->songname,28); /* make a cstr of songname */
of.numpat=mh_s3m->patnum;
of.numins=mh_s3m->insnum;
of.initspeed=mh_s3m->initspeed;
of.inittempo=mh_s3m->inittempo;
/* count the number of channels used */
of.numchn=0;
/* for(t=0;t<32;t++) printf("%2.2x ",mh_s3m->channels[t]);
*/
for(t=0;t<32;t++) remap[t]=0;
for(t=0;t<16;t++) isused[t]=0;
/* set a flag for each channel (1 out of of 16) thats being used: */
for(t=0;t<32;t++){
if(mh_s3m->channels[t]<16){
isused[mh_s3m->channels[t]]=1;
}
}
/* give each of them a different number */
for(t=0;t<16;t++){
if(isused[t]){
isused[t]=of.numchn;
of.numchn++;
}
}
/* build the remap array */
for(t=0;t<32;t++){
if(mh_s3m->channels[t]<16){
remap[t]=isused[mh_s3m->channels[t]];
}
}
/* set panning positions */
for(t=0;t<32;t++){
if(mh_s3m->channels[t]<16){
if(mh_s3m->channels[t]<8){
of.panning[remap[t]]=0x30;
}
else{
of.panning[remap[t]]=0xc0;
}
}
}
of.numtrk=of.numpat*of.numchn;
/* printf("Uses %d channels\n",of.numchn);
*/
/* read the order data */
_mm_read_UBYTES(of.positions,mh_s3m->ordnum);
of.numpos=0;
for(t=0;t<mh_s3m->ordnum;t++){
of.positions[of.numpos]=of.positions[t];
if(of.positions[t]<254) of.numpos++;
}
if((paraptr=(UWORD *)MyMalloc((of.numins+of.numpat)*sizeof(UWORD)))==NULL) return 0;
/* read the instrument+pattern parapointers */
_mm_read_I_UWORDS(paraptr,of.numins+of.numpat);
/* printf("pantab %d\n",mh_s3m->pantable);
*/
if(mh_s3m->pantable==252){
/* read the panning table */
_mm_read_UBYTES(pan,32);
/* set panning positions according to panning table (new for st3.2) */
for(t=0;t<32;t++){
if((pan[t]&0x20) && mh_s3m->channels[t]<16){
of.panning[remap[t]]=(pan[t]&0xf)<<4;
}
}
}
/* now is a good time to check if the header was too short :) */
if(modpos > modsize){
gModPlayerErrorMessage=ERROR_LOADING_HEADER;
return 0;
}
if(!AllocInstruments()) return 0;
d=of.instruments;
for(t=0;t<of.numins;t++){
S3MSAMPLE s;
d->numsmp=1;
if(!AllocSamples(d)) return 0;
q=d->samples;
/* seek to instrument position */
_mm_fseek(((long)paraptr[t])<<4,SEEK_SET);
/* and load sample info */
s.type =_mm_read_UBYTE();
_mm_read_str(s.filename,12);
s.memsegh =_mm_read_UBYTE();
s.memsegl =_mm_read_I_UWORD();
s.length =_mm_read_I_ULONG();
s.loopbeg =_mm_read_I_ULONG();
s.loopend =_mm_read_I_ULONG();
s.volume =_mm_read_UBYTE();
s.dsk =_mm_read_UBYTE();
s.pack =_mm_read_UBYTE();
s.flags =_mm_read_UBYTE();
s.c2spd =_mm_read_I_ULONG();
_mm_read_UBYTES(s.unused,12);
_mm_read_str(s.sampname,28);
_mm_read_str(s.scrs,4);
if(modpos > modsize){
gModPlayerErrorMessage=ERROR_LOADING_HEADER;
return 0;
}
d->insname=DupStr(s.sampname,28);
q->c2spd= (unsigned short)s.c2spd;
q->length=s.length;
q->loopstart=s.loopbeg;
q->loopend=s.loopend;
q->volume=s.volume;
q->seekpos=(((long)s.memsegh)<<16|s.memsegl)<<4;
q->flags=0;
if(s.flags&1) q->flags|=SF_LOOP;
if(s.flags&4) q->flags|=SF_16BITS;
if(mh_s3m->fileformat==1) q->flags|=SF_SIGNED;
/* DON'T load sample if it doesn't have the SCRS tag */
if(memcmp(s.scrs,"SCRS",4)!=0) q->length=0;
/* printf("%s\n",d->insname);
*/
d++;
}
if(!AllocTracks())
{
gModPlayerErrorMessage=ERROR_ALLOC_STRUCT;
return 0;
}
if(!AllocPatterns())
{
gModPlayerErrorMessage=ERROR_ALLOC_STRUCT;
return 0;
}
for(t=0;t<of.numpat;t++)
{
/* seek to pattern position ( + 2 skip pattern length ) */
_mm_fseek((((long)paraptr[of.numins+t])<<4)+2,SEEK_SET);
if(!S3M_ReadPattern())
{
gModPlayerErrorMessage = ERROR_LOADING_PATTERN;
return 0;
}
for(u=0;u<of.numchn;u++)
{
if(!(of.tracks[track++]=S3M_ConvertTrack(&s3mbuf[u*64])))
{
gModPlayerErrorMessage = ERROR_LOADING_TRACK;
return 0;
}
}
}
return 1;
}
