/* Read sample information */
static BOOL OKT_doSAMP(int len)
{
int t;
SAMPLE *q;
OKTSAMPLE s;
of.numins = of.numsmp = (len / 0x20);
if (!AllocSamples())
return 0;
for (t = 0, q = of.samples; t < of.numins; t++, q++) {
_mm_read_UBYTES(s.sampname, 20, modreader);
s.len = _mm_read_M_ULONG(modreader);
s.loopbeg = _mm_read_M_UWORD(modreader);
s.looplen = _mm_read_M_UWORD(modreader);
_mm_read_UBYTE(modreader);
s.volume = _mm_read_UBYTE(modreader);
_mm_read_M_UWORD(modreader);
if (_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
if (!s.len)
q->seekpos = q->length = q->loopstart = q->loopend = q->flags = 0;
else {
s.len--;
/* sanity checks */
if (s.loopbeg > s.len)
s.loopbeg = s.len;
if (s.loopbeg + s.looplen > s.len)
s.looplen = s.len - s.loopbeg;
if (s.looplen < 2)
s.looplen = 0;
q->length = s.len;
q->loopstart = s.loopbeg;
q->loopend = s.looplen + q->loopstart;
q->volume = s.volume;
q->flags = SF_SIGNED;
if (s.looplen)
q->flags |= SF_LOOP;
}
q->samplename = DupStr(s.sampname, 20, 1);
q->speed = 8363;
}
return 1;
}
SLONG
_mm_read_M_SLONG (URL reader)
{
return ((SLONG) _mm_read_M_ULONG (reader));
}
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 loadsmp6(void)
{
int t;
SAMPLE *sptr;
sptr=of.samples;
for(t=0;t<of.numsmp;t++,sptr++) {
int flags;
flags = _mm_read_M_UWORD(modreader);
sptr->flags=0;
if(flags&0x0004) sptr->flags|=SF_STEREO;
if(flags&0x0002) sptr->flags|=SF_SIGNED;
if(flags&0x0001) sptr->flags|=SF_16BITS;
/* convert flags */
if(universion>=0x104) {
if(flags&0x2000) sptr->flags|=SF_UST_LOOP;
if(flags&0x1000) sptr->flags|=SF_OWNPAN;
if(flags&0x0800) sptr->flags|=SF_SUSTAIN;
if(flags&0x0400) sptr->flags|=SF_REVERSE;
if(flags&0x0200) sptr->flags|=SF_BIDI;
if(flags&0x0100) sptr->flags|=SF_LOOP;
if(flags&0x0020) sptr->flags|=SF_ITPACKED;
if(flags&0x0010) sptr->flags|=SF_DELTA;
if(flags&0x0008) sptr->flags|=SF_BIG_ENDIAN;
} else if(universion>=0x102) {
if(flags&0x0800) sptr->flags|=SF_UST_LOOP;
if(flags&0x0400) sptr->flags|=SF_OWNPAN;
if(flags&0x0200) sptr->flags|=SF_SUSTAIN;
if(flags&0x0100) sptr->flags|=SF_REVERSE;
if(flags&0x0080) sptr->flags|=SF_BIDI;
if(flags&0x0040) sptr->flags|=SF_LOOP;
if(flags&0x0020) sptr->flags|=SF_ITPACKED;
if(flags&0x0010) sptr->flags|=SF_DELTA;
if(flags&0x0008) sptr->flags|=SF_BIG_ENDIAN;
} else {
if(flags&0x400) sptr->flags|=SF_UST_LOOP;
if(flags&0x200) sptr->flags|=SF_OWNPAN;
if(flags&0x100) sptr->flags|=SF_REVERSE;
if(flags&0x080) sptr->flags|=SF_SUSTAIN;
if(flags&0x040) sptr->flags|=SF_BIDI;
if(flags&0x020) sptr->flags|=SF_LOOP;
if(flags&0x010) sptr->flags|=SF_BIG_ENDIAN;
if(flags&0x008) sptr->flags|=SF_DELTA;
}
sptr->speed = _mm_read_M_ULONG(modreader);
sptr->volume = _mm_read_UBYTE(modreader);
sptr->panning = _mm_read_M_UWORD(modreader);
sptr->length = _mm_read_M_ULONG(modreader);
sptr->loopstart = _mm_read_M_ULONG(modreader);
sptr->loopend = _mm_read_M_ULONG(modreader);
sptr->susbegin = _mm_read_M_ULONG(modreader);
sptr->susend = _mm_read_M_ULONG(modreader);
sptr->globvol = _mm_read_UBYTE(modreader);
sptr->vibflags = _mm_read_UBYTE(modreader);
sptr->vibtype = _mm_read_UBYTE(modreader);
sptr->vibsweep = _mm_read_UBYTE(modreader);
sptr->vibdepth = _mm_read_UBYTE(modreader);
sptr->vibrate = _mm_read_UBYTE(modreader);
sptr->samplename=readstring();
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
}
return 1;
}
static GT_CHUNK *loadChunk(void)
{
GT_CHUNK *new_chunk = (GT_CHUNK *) MikMod_malloc(sizeof(GT_CHUNK));
if (!new_chunk) return NULL;
/* the file chunk id only use 3 bytes, others 4 */
_mm_read_UBYTES(new_chunk->id, 3, modreader);
if (memcmp(new_chunk, "GT2", 3) != 0) {
_mm_read_UBYTES(&new_chunk->id[3], 1, modreader);
}
else {
new_chunk->id[3] = ' ';
}
#ifdef MIKMOD_DEBUG
fprintf(stderr, ">> %c%c%c%c\n", new_chunk->id[0], new_chunk->id[1], new_chunk->id[2], new_chunk->id[3]);
#endif
if (!memcmp(new_chunk, "GT2", 3)) {
_mm_read_UBYTES(&new_chunk->gt2.version, 1, modreader);
_mm_read_M_ULONGS(&new_chunk->gt2.chunk_size, 1, modreader);
new_chunk->gt2.module_name[32] = 0;
_mm_read_UBYTES(&new_chunk->gt2.module_name, 32, modreader);
new_chunk->gt2.comments_author[160] = 0;
_mm_read_UBYTES(&new_chunk->gt2.comments_author, 160, modreader);
_mm_read_UBYTES(&new_chunk->gt2.date_day, 1, modreader);
_mm_read_UBYTES(&new_chunk->gt2.date_month, 1, modreader);
_mm_read_M_UWORDS(&new_chunk->gt2.date_year, 1, modreader);
new_chunk->gt2.tracker_name[24] = 0;
_mm_read_UBYTES(&new_chunk->gt2.tracker_name, 24, modreader);
if (new_chunk->gt2.version > 5) return new_chunk;
_mm_read_M_UWORDS(&new_chunk->gt2.initial_speed, 1, modreader);
_mm_read_M_UWORDS(&new_chunk->gt2.initial_tempo, 1, modreader);
_mm_read_M_UWORDS(&new_chunk->gt2.initial_master_volume, 1, modreader);
_mm_read_M_UWORDS(&new_chunk->gt2.num_voices, 1, modreader);
new_chunk->gt2.voice_pannings = (UWORD *) MikMod_malloc(2*new_chunk->gt2.num_voices);
if (new_chunk->gt2.voice_pannings == NULL) goto fail;
_mm_read_M_UWORDS(new_chunk->gt2.voice_pannings, new_chunk->gt2.num_voices, modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "TVOL", 4)) {
new_chunk->tvol.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->tvol.num_tracks = _mm_read_M_UWORD(modreader);
new_chunk->tvol.track_volumes = (UWORD *) MikMod_malloc(new_chunk->tvol.num_tracks * 2);
if (new_chunk->tvol.track_volumes == NULL) goto fail;
_mm_read_M_UWORDS(new_chunk->tvol.track_volumes, new_chunk->tvol.num_tracks, modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "XCOM", 4)) {
new_chunk->xcom.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->xcom.comment_len = _mm_read_M_UWORD(modreader);
if (!new_chunk->xcom.comment_len) {
new_chunk->xcom.comment = NULL;
return new_chunk;
}
new_chunk->xcom.comment = (CHAR *) MikMod_malloc((ULONG)new_chunk->xcom.comment_len + 1);
if (new_chunk->xcom.comment == NULL) goto fail;
_mm_read_UBYTES(new_chunk->xcom.comment, new_chunk->xcom.comment_len, modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "SONG", 4)) {
new_chunk->song.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->song.song_length = _mm_read_M_UWORD(modreader);
new_chunk->song.song_repeat_point = _mm_read_M_UWORD(modreader);
new_chunk->song.patterns = (UWORD *) MikMod_malloc(2*new_chunk->song.song_length);
if (new_chunk->song.patterns == NULL) goto fail;
_mm_read_M_UWORDS(new_chunk->song.patterns, new_chunk->song.song_length, modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "PATS", 4)) {
new_chunk->pats.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->pats.num_tracks = _mm_read_M_UWORD(modreader);
new_chunk->pats.num_patterns = _mm_read_M_UWORD(modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "PATD", 4)) {
new_chunk->patd.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->patd.pattern_number = _mm_read_M_UWORD(modreader);
new_chunk->patd.pattern_name[16] = 0;
_mm_read_UBYTES(new_chunk->patd.pattern_name, 16, modreader);
new_chunk->patd.codage_version = _mm_read_M_UWORD(modreader);
new_chunk->patd.num_lines = _mm_read_M_UWORD(modreader);
new_chunk->patd.num_tracks = _mm_read_M_UWORD(modreader);
new_chunk->patd.notes = (GT_NOTE *) MikMod_malloc(5 *
new_chunk->patd.num_lines *
new_chunk->patd.num_tracks);
if (new_chunk->patd.notes == NULL) goto fail;
_mm_read_UBYTES(new_chunk->patd.notes,
new_chunk->patd.num_lines * new_chunk->patd.num_tracks * 5,
modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "ORCH", 4)) {
new_chunk->orch.chunk_size = _mm_read_M_ULONG(modreader);
new_chunk->orch.num_instruments = _mm_read_M_UWORD(modreader);
return new_chunk;
}
if (!memcmp(new_chunk, "INST", 4)) {
return new_chunk;
}
if (!memcmp(new_chunk, "SAMP", 4)) {
return new_chunk;
}
if (!memcmp(new_chunk, "VENV", 4)) {
return new_chunk;
}
if (!memcmp(new_chunk, "TENV", 4)) {
return new_chunk;
}
if (!memcmp(new_chunk, "PENV", 4)) {
return new_chunk;
}
if (!memcmp(new_chunk, "ENDC", 4)) {
return new_chunk;
}
#ifdef MIKMOD_DEBUG
fprintf(stderr, "?? %c%c%c%c\n", new_chunk->id[0], new_chunk->id[1], new_chunk->id[2], new_chunk->id[3]);
#endif
fail:
MikMod_free(new_chunk);
return NULL; /* unknown chunk */
}
SLONG _mm_read_M_SLONG()
{
return((SLONG)_mm_read_M_ULONG());
}
