|
4
|
1 /*
|
|
|
2
|
|
|
3 Name: LOAD_IT.C
|
|
|
4
|
|
|
5 Description:
|
|
|
6 ImpulseTracker (IT) module loader
|
|
|
7
|
|
|
8 Portability:
|
|
|
9 All systems - all compilers (hopefully)
|
|
|
10
|
|
|
11 Copyright 1997 by Jake Stine and Divine Entertainment
|
|
|
12
|
|
|
13 If this module is found to not be portable to any particular platform,
|
|
|
14 please contact Jake Stine at dracoirs@epix.net (see MIKMOD.TXT for
|
|
|
15 more information on contacting the author).
|
|
|
16 */
|
|
|
17
|
|
|
18 #include <string.h>
|
|
|
19 #include "mikmod.h"
|
|
|
20
|
|
|
21 /**************************************************************************
|
|
|
22 **************************************************************************/
|
|
|
23
|
|
|
24 typedef struct ITNOTE
|
|
|
25 { UBYTE note,ins,volpan,cmd,inf;
|
|
|
26 } ITNOTE;
|
|
|
27
|
|
|
28 UBYTE *IT_ConvertTrack(ITNOTE *tr,UWORD numrows);
|
|
|
29
|
|
|
30
|
|
|
31 // Raw IT header struct:
|
|
|
32
|
|
|
33 typedef struct ITHEADER
|
|
|
34 { CHAR songname[26];
|
|
|
35 UBYTE blank01[2];
|
|
|
36 UWORD ordnum;
|
|
|
37 UWORD insnum;
|
|
|
38 UWORD smpnum;
|
|
|
39 UWORD patnum;
|
|
|
40 UWORD cwt; // Created with tracker (y.xx = 0x0yxx)
|
|
|
41 UWORD cmwt; // Compatable with tracker ver > than val.
|
|
|
42 UWORD flags;
|
|
|
43 UWORD special; // bit 0 set = song message attached
|
|
|
44 UBYTE globvol;
|
|
|
45 UBYTE mixvol; // mixing volume [ignored]
|
|
|
46 UBYTE initspeed;
|
|
|
47 UBYTE inittempo;
|
|
|
48 UBYTE pansep; // panning separation between channels
|
|
|
49 UBYTE zerobyte;
|
|
|
50 UWORD msglength;
|
|
|
51 ULONG msgoffset;
|
|
|
52 UBYTE blank02[4];
|
|
|
53
|
|
|
54 UBYTE pantable[64];
|
|
|
55 UBYTE voltable[64];
|
|
|
56 } ITHEADER;
|
|
|
57
|
|
|
58
|
|
|
59 // Raw IT sampleinfo struct:
|
|
|
60
|
|
|
61 typedef struct ITSAMPLE
|
|
|
62 { CHAR filename[12];
|
|
|
63 UBYTE zerobyte;
|
|
|
64 UBYTE globvol;
|
|
|
65 UBYTE flag;
|
|
|
66 UBYTE volume;
|
|
|
67 UBYTE panning;
|
|
|
68 CHAR sampname[28];
|
|
|
69 UWORD convert; // sample conversion flag
|
|
|
70 ULONG length;
|
|
|
71 ULONG loopbeg;
|
|
|
72 ULONG loopend;
|
|
|
73 ULONG c5spd;
|
|
|
74 ULONG susbegin;
|
|
|
75 ULONG susend;
|
|
|
76 ULONG sampoffset;
|
|
|
77 UBYTE vibspeed;
|
|
|
78 UBYTE vibdepth;
|
|
|
79 UBYTE vibrate;
|
|
|
80 UBYTE vibwave; // 0 = sine; 1 = rampdown; 2 = square; 3 = random (speed ignored)
|
|
|
81
|
|
|
82 UBYTE noteindex; // for converting c5spd to finetune
|
|
|
83 } ITSAMPLE;
|
|
|
84
|
|
|
85
|
|
|
86 typedef struct ITINSTHEADER
|
|
|
87 { ULONG size; // (dword) Instrument size
|
|
|
88 CHAR filename[12]; // (char) Instrument filename
|
|
|
89 UBYTE zerobyte; // (byte) Instrument type (always 0)
|
|
|
90 UBYTE volflg;
|
|
|
91 UBYTE volpts;
|
|
|
92 UBYTE volbeg; // (byte) Volume loop start (node)
|
|
|
93 UBYTE volend; // (byte) Volume loop end (node)
|
|
|
94 UBYTE volsusbeg; // (byte) Volume sustain begin (node)
|
|
|
95 UBYTE volsusend; // (byte) Volume Sustain end (node)
|
|
|
96 UBYTE panflg;
|
|
|
97 UBYTE panpts;
|
|
|
98 UBYTE panbeg; // (byte) channel loop start (node)
|
|
|
99 UBYTE panend; // (byte) channel loop end (node)
|
|
|
100 UBYTE pansusbeg; // (byte) cahnnel sustain begin (node)
|
|
|
101 UBYTE pansusend; // (byte) channel Sustain end (node)
|
|
|
102 UBYTE pitflg;
|
|
|
103 UBYTE pitpts;
|
|
|
104 UBYTE pitbeg; // (byte) pitch loop start (node)
|
|
|
105 UBYTE pitend; // (byte) pitch loop end (node)
|
|
|
106 UBYTE pitsusbeg; // (byte) pitch sustain begin (node)
|
|
|
107 UBYTE pitsusend; // (byte) pitch Sustain end (node)
|
|
|
108 UWORD blank;
|
|
|
109 UBYTE globvol;
|
|
|
110 UBYTE chanpan;
|
|
|
111 UWORD fadeout; // Envelope end / NNA volume fadeout
|
|
|
112 UBYTE dnc; // Duplicate note check
|
|
|
113 UBYTE dca; // Duplicate check action
|
|
|
114 UBYTE dct; // Duplicate check type
|
|
|
115 UBYTE nna; // New Note Action [0,1,2,3]
|
|
|
116 UWORD trkvers; // tracker version used to save [in files only]
|
|
|
117 UBYTE ppsep; // Pitch-pan Separation
|
|
|
118 UBYTE ppcenter; // Pitch-pan Center
|
|
|
119 UBYTE rvolvar; // random volume varations
|
|
|
120 UBYTE rpanvar; // random panning varations
|
|
|
121 UWORD numsmp; // Number of samples in instrument [in files only]
|
|
|
122 CHAR name[26]; // Instrument name
|
|
|
123 UBYTE blank01[6];
|
|
|
124 UWORD samptable[120]; // sample for each note [note / samp pairs]
|
|
|
125
|
|
|
126 UBYTE volenv[200]; // volume envelope (IT 1.x stuff)
|
|
|
127 UBYTE oldvoltick[25]; // volume tick position (IT 1.x stuff)
|
|
|
128 UBYTE volnode[25]; // aplitude of volume nodes
|
|
|
129 UWORD voltick[25]; // tick value of volume nodes
|
|
|
130 SBYTE pannode[25]; // panenv - node points
|
|
|
131 UWORD pantick[25]; // tick value of panning nodes
|
|
|
132 SBYTE pitnode[25]; // pitchenv - node points
|
|
|
133 UWORD pittick[25]; // tick value of pitch nodes
|
|
|
134 } ITINSTHEADER;
|
|
|
135
|
|
|
136
|
|
|
137 /**************************************************************************
|
|
|
138 **************************************************************************/
|
|
|
139
|
|
|
140 extern SBYTE remap[64]; // for removing empty channels
|
|
|
141 extern UBYTE *poslookup; // S3M/IT fix - removing blank patterns needs a
|
|
|
142 // lookup table to fix position-jump commands
|
|
|
143 static ULONG *paraptr = NULL; // parapointer array (see IT docs)
|
|
|
144 static ITHEADER *mh = NULL;
|
|
|
145 static ITNOTE *itpat = NULL; // allocate to space for one full pattern
|
|
|
146 static UBYTE *mask = NULL; // arrays allocated to 64 elements and used for
|
|
|
147 static ITNOTE *last = NULL; // uncompressing IT's pattern information
|
|
|
148 static int numtrk = 0;
|
|
|
149 static int old_effect; // if set, use S3M old-effects stuffs
|
|
|
150 static int *noteindex;
|
|
|
151
|
|
|
152 CHAR IT_Version[] = "ImpulseTracker x.xx";
|
|
|
153
|
|
|
154
|
|
|
155 BOOL IT_Test(void)
|
|
|
156 {
|
|
|
157 UBYTE id[4];
|
|
|
158
|
|
|
159 if(!_mm_read_UBYTES(id,4,modfp)) return 0;
|
|
|
160 if(!memcmp(id,"IMPM",4)) return 1;
|
|
|
161 return 0;
|
|
|
162 }
|
|
|
163
|
|
|
164 BOOL IT_Init(void)
|
|
|
165 {
|
|
|
166 if((mh=(ITHEADER *)_mm_calloc(1,sizeof(ITHEADER)))==NULL) return 0;
|
|
|
167 if((poslookup=(UBYTE *)_mm_malloc(256*sizeof(UBYTE)))==NULL) return 0;
|
|
|
168 if((itpat=(ITNOTE *)_mm_malloc(200*64*sizeof(ITNOTE)))==NULL) return 0;
|
|
|
169 if((mask=(UBYTE *)_mm_malloc(64*sizeof(UBYTE)))==NULL) return 0;
|
|
|
170 if((last=(ITNOTE *)_mm_malloc(64*sizeof(ITNOTE)))==NULL) return 0;
|
|
|
171
|
|
|
172 return 1;
|
|
|
173 }
|
|
|
174
|
|
|
175 void IT_Cleanup(void)
|
|
|
176 {
|
|
|
177 if(mh!=NULL) free(mh);
|
|
|
178 if(poslookup!=NULL) free(poslookup);
|
|
|
179 if(itpat!=NULL) free(itpat);
|
|
|
180 if(mask!=NULL) free(mask);
|
|
|
181 if(last!=NULL) free(last);
|
|
|
182 if(paraptr!=NULL) free(paraptr);
|
|
|
183 if(noteindex!=NULL) free(noteindex);
|
|
|
184
|
|
|
185 mh = NULL;
|
|
|
186 poslookup = NULL;
|
|
|
187 itpat = NULL;
|
|
|
188 mask = NULL;
|
|
|
189 last = NULL;
|
|
|
190 paraptr = NULL;
|
|
|
191 noteindex = NULL;
|
|
|
192 }
|
|
|
193
|
|
|
194
|
|
|
195 BOOL IT_GetNumChannels(UWORD patrows)
|
|
|
196
|
|
|
197 // Because so many IT files have 64 channels as the set number used, but really
|
|
|
198 // only use far less (usually 8 to 12 still), I had to make this function,
|
|
|
199 // which determines the number of channels that are actually USED by a pattern.
|
|
|
200 //
|
|
|
201 // For every channel that's used, it sets the appropriate array entry of the
|
|
|
202 // global varialbe 'isused'
|
|
|
203 //
|
|
|
204 // NOTE: You must first seek to the file location of the pattern before calling
|
|
|
205 // this procedure.
|
|
|
206 // Returns 1 on error
|
|
|
207 {
|
|
|
208 int row=0,flag,ch;
|
|
|
209
|
|
|
210 do
|
|
|
211 { flag = _mm_read_UBYTE(modfp);
|
|
|
212 if(flag == EOF)
|
|
|
213 { _mm_errno = MMERR_LOADING_PATTERN;
|
|
|
214 return 1;
|
|
|
215 }
|
|
|
216
|
|
|
217 if(flag == 0)
|
|
|
218 { row++;
|
|
|
219 } else
|
|
|
220 { ch = (flag-1) & 63;
|
|
|
221 remap[ch] = 0;
|
|
|
222 if(flag & 128) mask[ch] = _mm_read_UBYTE(modfp);
|
|
|
223 if(mask[ch] & 1) _mm_read_UBYTE(modfp);
|
|
|
224 if(mask[ch] & 2) _mm_read_UBYTE(modfp);
|
|
|
225 if(mask[ch] & 4) _mm_read_UBYTE(modfp);
|
|
|
226 if(mask[ch] & 8) { _mm_read_UBYTE(modfp); _mm_read_UBYTE(modfp); }
|
|
|
227 }
|
|
|
228 } while(row < patrows);
|
|
|
229
|
|
|
230 return 0;
|
|
|
231 }
|
|
|
232
|
|
|
233
|
|
|
234 BOOL IT_ReadPattern(UWORD patrows)
|
|
|
235 {
|
|
|
236 int blah;
|
|
|
237 int row=0,flag,ch;
|
|
|
238 ITNOTE *itt = itpat, dummy,*n,*l;
|
|
|
239
|
|
|
240 memset(itt,255,patrows*of.numchn*sizeof(ITNOTE));
|
|
|
241
|
|
|
242 do
|
|
|
243 { flag = _mm_read_UBYTE(modfp);
|
|
|
244 if(feof(modfp))
|
|
|
245 { _mm_errno = MMERR_LOADING_PATTERN;
|
|
|
246 return 0;
|
|
|
247 }
|
|
|
248 if(flag == 0)
|
|
|
249 { itt = &itt[of.numchn];
|
|
|
250 row++;
|
|
|
251 } else
|
|
|
252 { ch = remap[(flag-1) & 63];
|
|
|
253 if(ch != -1)
|
|
|
254 { n = &itt[ch];
|
|
|
255 l = &last[ch];
|
|
|
256 } else
|
|
|
257 { n = l = &dummy; }
|
|
|
258
|
|
|
259 if(flag & 128) mask[ch] = _mm_read_UBYTE(modfp);
|
|
|
260 if(mask[ch] & 1) if((l->note = n->note = _mm_read_UBYTE(modfp)) == 255)
|
|
|
261 { l->note = n->note = 253; }
|
|
|
262 if(mask[ch] & 2) l->ins = n->ins = _mm_read_UBYTE(modfp);
|
|
|
263 if(mask[ch] & 4) l->volpan = n->volpan = _mm_read_UBYTE(modfp);
|
|
|
264 if(mask[ch] & 8) { l->cmd = n->cmd = _mm_read_UBYTE(modfp);
|
|
|
265 l->inf = n->inf = _mm_read_UBYTE(modfp); }
|
|
|
266 if(mask[ch] & 16) n->note = l->note;
|
|
|
267 if(mask[ch] & 32) n->ins = l->ins;
|
|
|
268 if(mask[ch] & 64) n->volpan = l->volpan;
|
|
|
269 if(mask[ch] & 128) { n->cmd = l->cmd;
|
|
|
270 n->inf = l->inf; }
|
|
|
271 }
|
|
|
272 } while(row < patrows);
|
|
|
273
|
|
|
274 for(blah=0; blah<of.numchn; blah++)
|
|
|
275 of.tracks[numtrk++] = IT_ConvertTrack(&itpat[blah],patrows);
|
|
|
276
|
|
|
277 return 1;
|
|
|
278 }
|
|
|
279
|
|
|
280
|
|
|
281 void S3MIT_ProcessCmd(UBYTE cmd, UBYTE inf, BOOL oldeffect);
|
|
|
282
|
|
|
283 // table for porta-to-note command within volume/panning column
|
|
|
284 static UBYTE portatable[] = "1, 4, 8, 16, 32, 64, 96, 128, 255";
|
|
|
285
|
|
|
286 UBYTE *IT_ConvertTrack(ITNOTE *tr, UWORD numrows)
|
|
|
287 {
|
|
|
288 int t;
|
|
|
289
|
|
|
290 UBYTE note,ins,volpan;
|
|
|
291
|
|
|
292 UniReset();
|
|
|
293
|
|
|
294 for(t=0; t<numrows; t++)
|
|
|
295 { note = tr[t*of.numchn].note;
|
|
|
296 ins = tr[t*of.numchn].ins;
|
|
|
297 volpan = tr[t*of.numchn].volpan;
|
|
|
298
|
|
|
299 if(note!=255)
|
|
|
300 { if(note==253)
|
|
|
301 UniWrite(UNI_KEYOFF);
|
|
|
302 else if(note==254)
|
|
|
303 UniPTEffect(0xc,0); // <- note cut command
|
|
|
304 else
|
|
|
305 UniNote(note);
|
|
|
306 }
|
|
|
307
|
|
|
308 if((ins != 0) && (ins < 100)) UniInstrument(ins-1);
|
|
|
309
|
|
|
310 // process volume / panning column
|
|
|
311 // volume / panning effects do NOT all share the same memory address
|
|
|
312 // yet. That requires more work than I care to apply at the moment ;)
|
|
|
313
|
|
|
314 if(volpan<=64)
|
|
|
315 { UniVolEffect(VOL_VOLUME,volpan);
|
|
|
316 } else if((volpan>=65) && (volpan<=74)) // fine volume slide up (65-74)
|
|
|
317 { UniVolEffect(VOL_VOLSLIDE,0x0f + ((volpan-65)<<4));
|
|
|
318 } else if((volpan>=75) && (volpan<=84)) // fine volume slide down (75-84)
|
|
|
319 { UniVolEffect(VOL_VOLSLIDE,0xf0 + (volpan-75));
|
|
|
320 } else if((volpan>=85) && (volpan<=94)) // volume slide up (85-94)
|
|
|
321 { UniVolEffect(VOL_VOLSLIDE,((volpan-85)<<4));
|
|
|
322 } else if((volpan>=95) && (volpan<=104)) // volume slide down (95-104)
|
|
|
323 { UniVolEffect(VOL_VOLSLIDE,(volpan-95));
|
|
|
324 } else if((volpan>=105) && (volpan<=114)) // pitch slide up (105-114)
|
|
|
325 { UniVolEffect(VOL_PITCHSLIDEDN,((volpan-105)<<4));
|
|
|
326 } else if((volpan>=115) && (volpan<=124)) // pitch slide down (115-124)
|
|
|
327 { UniVolEffect(VOL_PITCHSLIDEUP,(volpan-115));
|
|
|
328 } else if((volpan>=128) && (volpan<=192))
|
|
|
329 { UniVolEffect(VOL_PANNING,((volpan-128) == 64) ? 255 : ((volpan-128) << 2));
|
|
|
330 } else if((volpan>=193) && (volpan<=202)) // portamento to note
|
|
|
331 { UniVolEffect(VOL_PORTAMENTO,portatable[volpan-193]);
|
|
|
332 } else if((volpan>=203) && (volpan<=212)) // vibrato
|
|
|
333 { UniVolEffect(VOL_VIBRATO,(volpan-203));
|
|
|
334 }
|
|
|
335
|
|
|
336 S3MIT_ProcessCmd(tr[t*of.numchn].cmd,tr[t*of.numchn].inf,old_effect);
|
|
|
337
|
|
|
338 UniNewline();
|
|
|
339 }
|
|
|
340 return UniDup();
|
|
|
341 }
|
|
|
342
|
|
|
343
|
|
|
344 int cvt_c5spd_to_finetune(ULONG c5spd, int sampnum)
|
|
|
345 {
|
|
|
346 int ctmp=0,tmp,note=1,finetune=0;
|
|
|
347
|
|
|
348 c5spd/=2;
|
|
|
349
|
|
|
350 do
|
|
|
351 { tmp = getfrequency(of.flags,getlinearperiod(note,0));
|
|
|
352 if(tmp >= c5spd) break;
|
|
|
353 ctmp = tmp;
|
|
|
354 note++;
|
|
|
355 } while(1);
|
|
|
356
|
|
|
357 if(tmp != c5spd)
|
|
|
358 { if((tmp-c5spd) < (c5spd-ctmp))
|
|
|
359 while(tmp>c5spd) tmp = getfrequency(of.flags,getlinearperiod(note,--finetune));
|
|
|
360 else
|
|
|
361 { note--;
|
|
|
362 while(ctmp<c5spd) ctmp = getfrequency(of.flags,getlinearperiod(note,++finetune));
|
|
|
363 }
|
|
|
364 }
|
|
|
365
|
|
|
366 noteindex[sampnum] = note-48;
|
|
|
367 return finetune;
|
|
|
368 }
|
|
|
369
|
|
|
370
|
|
|
371 BOOL IT_Load(void)
|
|
|
372 {
|
|
|
373 int t,u,lp;
|
|
|
374 INSTRUMENT *d;
|
|
|
375 SAMPLE *q;
|
|
|
376
|
|
|
377 numtrk = 0;
|
|
|
378
|
|
|
379 // try to read module header
|
|
|
380
|
|
|
381 _mm_read_I_ULONG(modfp); // kill the 4 byte header
|
|
|
382 _mm_read_string(mh->songname,26,modfp);
|
|
|
383 _mm_read_UBYTES(mh->blank01,2,modfp);
|
|
|
384 mh->ordnum =_mm_read_I_UWORD(modfp);
|
|
|
385 mh->insnum =_mm_read_I_UWORD(modfp);
|
|
|
386 mh->smpnum =_mm_read_I_UWORD(modfp);
|
|
|
387 mh->patnum =_mm_read_I_UWORD(modfp);
|
|
|
388 mh->cwt =_mm_read_I_UWORD(modfp);
|
|
|
389 mh->cmwt =_mm_read_I_UWORD(modfp);
|
|
|
390 mh->flags =_mm_read_I_UWORD(modfp);
|
|
|
391 mh->special =_mm_read_I_UWORD(modfp);
|
|
|
392
|
|
|
393 mh->globvol =_mm_read_UBYTE(modfp);
|
|
|
394 mh->mixvol =_mm_read_UBYTE(modfp);
|
|
|
395 mh->initspeed =_mm_read_UBYTE(modfp);
|
|
|
396 mh->inittempo =_mm_read_UBYTE(modfp);
|
|
|
397 mh->pansep =_mm_read_UBYTE(modfp);
|
|
|
398 mh->zerobyte =_mm_read_UBYTE(modfp);
|
|
|
399 mh->msglength =_mm_read_I_UWORD(modfp);
|
|
|
400 mh->msgoffset =_mm_read_I_ULONG(modfp);
|
|
|
401 _mm_read_UBYTES(mh->blank02,4,modfp);
|
|
|
402 _mm_read_UBYTES(mh->pantable,64,modfp);
|
|
|
403 _mm_read_UBYTES(mh->voltable,64,modfp);
|
|
|
404
|
|
|
405 if(feof(modfp))
|
|
|
406 { _mm_errno = MMERR_LOADING_HEADER;
|
|
|
407 return 0;
|
|
|
408 }
|
|
|
409
|
|
|
410 // set module variables
|
|
|
411
|
|
|
412 of.modtype = strdup(IT_Version);
|
|
|
413 of.modtype[15] = (mh->cwt >> 8) + 0x30;
|
|
|
414 of.modtype[17] = ((mh->cwt >> 4) & 0xf) + 0x30;
|
|
|
415 of.modtype[18] = ((mh->cwt) & 0xf) + 0x30;
|
|
|
416 of.songname = DupStr(mh->songname,26); // make a cstr of songname
|
|
|
417 of.reppos = 0;
|
|
|
418 of.numpat = mh->patnum;
|
|
|
419 of.numins = mh->insnum;
|
|
|
420 of.numsmp = mh->smpnum;
|
|
|
421 of.initspeed = mh->initspeed;
|
|
|
422 of.inittempo = mh->inittempo;
|
|
|
423 of.initvolume = mh->globvol;
|
|
|
424
|
|
|
425 old_effect = 0;
|
|
|
426 if(mh->flags & 8) { of.flags |= (UF_XMPERIODS | UF_LINEAR); old_effect |= 2; }
|
|
|
427 if((mh->cwt >= 0x106) && (mh->flags & 16)) old_effect |= 1;
|
|
|
428
|
|
|
429 // set panning positions
|
|
|
430 for(t=0; t<64; t++)
|
|
|
431 { if(mh->pantable[t] < 64) of.panning[t] = mh->pantable[t] << 2;
|
|
|
432 else if(mh->pantable[t]==64) of.panning[t] = 255;
|
|
|
433 else if(mh->pantable[t]==100) of.panning[t] = PAN_SURROUND;
|
|
|
434 }
|
|
|
435
|
|
|
436 // set channel volumes
|
|
|
437 memcpy(of.chanvol,mh->voltable,64);
|
|
|
438
|
|
|
439 // read the order data
|
|
|
440 if(!AllocPositions(mh->ordnum)) return 0;
|
|
|
441
|
|
|
442 for(t=0; t<mh->ordnum; t++)
|
|
|
443 of.positions[t] = _mm_read_UBYTE(modfp);
|
|
|
444
|
|
|
445 if(feof(modfp))
|
|
|
446 { _mm_errno = MMERR_LOADING_HEADER;
|
|
|
447 return 0;
|
|
|
448 }
|
|
|
449
|
|
|
450 of.numpos = 0;
|
|
|
451 for(t=0; t<mh->ordnum; t++)
|
|
|
452 { of.positions[of.numpos] = of.positions[t];
|
|
|
453 poslookup[t] = of.numpos; // bug fix for FREAKY S3Ms / ITs
|
|
|
454 if(of.positions[t]<254) of.numpos++;
|
|
|
455 }
|
|
|
456
|
|
|
457 if((paraptr=(ULONG *)_mm_malloc((mh->insnum+mh->smpnum+of.numpat)*sizeof(ULONG))) == NULL) return 0;
|
|
|
458
|
|
|
459 // read the instrument, sample, and pattern parapointers
|
|
|
460 _mm_read_I_ULONGS(paraptr,mh->insnum+mh->smpnum+of.numpat,modfp);
|
|
|
461
|
|
|
462 // now is a good time to check if the header was too short :)
|
|
|
463 if(feof(modfp))
|
|
|
464 { _mm_errno = MMERR_LOADING_HEADER;
|
|
|
465 return 0;
|
|
|
466 }
|
|
|
467
|
|
|
468 // Check for and load song comment
|
|
|
469 if(mh->special & 1)
|
|
|
470 { _mm_fseek(modfp,(long)(mh->msgoffset),SEEK_SET);
|
|
|
471 if(!ReadComment(mh->msglength)) return 0;
|
|
|
472 }
|
|
|
473
|
|
|
474 if(!(mh->flags & 4)) of.numins = of.numsmp;
|
|
|
475 if(!AllocSamples()) return 0;
|
|
|
476
|
|
|
477 if((noteindex=(int *)_mm_malloc(mh->smpnum*sizeof(int)))==NULL) return 0;
|
|
|
478
|
|
|
479 q = of.samples;
|
|
|
480
|
|
|
481 // Load all samples (they're used either way)
|
|
|
482 for(t=0; t<mh->smpnum; t++)
|
|
|
483 { ITSAMPLE s;
|
|
|
484
|
|
|
485 // seek to sample position
|
|
|
486 _mm_fseek(modfp,(long)(paraptr[mh->insnum+t] + 4),SEEK_SET);
|
|
|
487
|
|
|
488 // and load sample info
|
|
|
489 _mm_read_string(s.filename,12,modfp);
|
|
|
490 s.zerobyte = _mm_read_UBYTE(modfp);
|
|
|
491 s.globvol = _mm_read_UBYTE(modfp);
|
|
|
492 s.flag = _mm_read_UBYTE(modfp);
|
|
|
493 s.volume = _mm_read_UBYTE(modfp);
|
|
|
494 _mm_read_string(s.sampname,26,modfp);
|
|
|
495 s.convert = _mm_read_UBYTE(modfp);
|
|
|
496 s.panning = _mm_read_UBYTE(modfp);
|
|
|
497 s.length = _mm_read_I_ULONG(modfp);
|
|
|
498 s.loopbeg = _mm_read_I_ULONG(modfp);
|
|
|
499 s.loopend = _mm_read_I_ULONG(modfp);
|
|
|
500 s.c5spd = _mm_read_I_ULONG(modfp);
|
|
|
501 s.susbegin = _mm_read_I_ULONG(modfp);
|
|
|
502 s.susend = _mm_read_I_ULONG(modfp);
|
|
|
503 s.sampoffset = _mm_read_I_ULONG(modfp);
|
|
|
504 s.vibspeed = _mm_read_UBYTE(modfp);
|
|
|
505 s.vibdepth = _mm_read_UBYTE(modfp);
|
|
|
506 s.vibrate = _mm_read_UBYTE(modfp);
|
|
|
507 s.vibwave = _mm_read_UBYTE(modfp);
|
|
|
508
|
|
|
509
|
|
|
510 // Generate an error if c5spd is > 512k, or samplelength > 256 megs
|
|
|
511 // (nothing would EVER be that high)
|
|
|
512
|
|
|
513 if(feof(modfp) || (s.c5spd > 0x7ffffL) || (s.length > 0xfffffffUL) ||
|
|
|
514 (s.loopbeg > 0xfffffffUL) || (s.loopend > 0xfffffffUL))
|
|
|
515 { _mm_errno = MMERR_LOADING_SAMPLEINFO;
|
|
|
516 return 0;
|
|
|
517 }
|
|
|
518
|
|
|
519 q->samplename = DupStr(s.sampname,26);
|
|
|
520
|
|
|
521 q->speed = s.c5spd / 2;
|
|
|
522 q->panning = ((s.panning & 127)==64) ? 255 : (s.panning & 127) << 2;
|
|
|
523 q->length = s.length;
|
|
|
524 q->loopstart = s.loopbeg;
|
|
|
525 q->loopend = s.loopend;
|
|
|
526 q->volume = s.volume;
|
|
|
527 q->globvol = s.globvol;
|
|
|
528 q->seekpos = s.sampoffset;
|
|
|
529
|
|
|
530 // ===================================
|
|
|
531 // Convert speed to XM linear finetune
|
|
|
532
|
|
|
533 if(of.flags & UF_LINEAR)
|
|
|
534 q->speed = cvt_c5spd_to_finetune(s.c5spd, t);
|
|
|
535
|
|
|
536 if(s.panning & 128) q->flags |= SF_OWNPAN;
|
|
|
537
|
|
|
538 if(s.vibrate)
|
|
|
539 { q->vibflags |= AV_IT;
|
|
|
540 q->vibtype = s.vibwave;
|
|
|
541 q->vibsweep = s.vibrate * 2;
|
|
|
542 q->vibdepth = s.vibdepth;
|
|
|
543 q->vibrate = s.vibspeed;
|
|
|
544 }
|
|
|
545
|
|
|
546 if(s.flag & 2) q->flags |= SF_16BITS;
|
|
|
547 if(s.flag & 16) q->flags |= SF_LOOP;
|
|
|
548 if(s.flag & 64) q->flags |= SF_BIDI;
|
|
|
549
|
|
|
550 if(mh->cwt >= 0x200)
|
|
|
551 { if(s.convert & 1) q->flags |= SF_SIGNED;
|
|
|
552 if(s.convert & 4) q->flags |= SF_DELTA;
|
|
|
553 }
|
|
|
554
|
|
|
555 q++;
|
|
|
556 }
|
|
|
557
|
|
|
558 // Load instruments if instrument mode flag enabled
|
|
|
559
|
|
|
560 if(mh->flags & 4)
|
|
|
561 { if(!AllocInstruments()) return 0;
|
|
|
562 d = of.instruments;
|
|
|
563 of.flags |= UF_NNA | UF_INST;
|
|
|
564
|
|
|
565 for(t=0; t<mh->insnum; t++)
|
|
|
566 { ITINSTHEADER ih;
|
|
|
567
|
|
|
568 // seek to instrument position
|
|
|
569 _mm_fseek(modfp,paraptr[t]+4,SEEK_SET);
|
|
|
570
|
|
|
571 // and load instrument info
|
|
|
572 _mm_read_string(ih.filename,12,modfp);
|
|
|
573 ih.zerobyte = _mm_read_UBYTE(modfp);
|
|
|
574 if(mh->cwt < 0x200) // load IT 1.xx inst header
|
|
|
575 { ih.volflg = _mm_read_UBYTE(modfp);
|
|
|
576 ih.volbeg = _mm_read_UBYTE(modfp);
|
|
|
577 ih.volend = _mm_read_UBYTE(modfp);
|
|
|
578 ih.volsusbeg = _mm_read_UBYTE(modfp);
|
|
|
579 ih.volsusend = _mm_read_UBYTE(modfp);
|
|
|
580 _mm_read_I_UWORD(modfp);
|
|
|
581 ih.fadeout = _mm_read_I_UWORD(modfp);
|
|
|
582 ih.nna = _mm_read_UBYTE(modfp);
|
|
|
583 ih.dnc = _mm_read_UBYTE(modfp);
|
|
|
584 } else // Read IT200+ header
|
|
|
585 { ih.nna = _mm_read_UBYTE(modfp);
|
|
|
586 ih.dct = _mm_read_UBYTE(modfp);
|
|
|
587 ih.dca = _mm_read_UBYTE(modfp);
|
|
|
588 ih.fadeout = _mm_read_I_UWORD(modfp);
|
|
|
589 ih.ppsep = _mm_read_UBYTE(modfp);
|
|
|
590 ih.ppcenter = _mm_read_UBYTE(modfp);
|
|
|
591 ih.globvol = _mm_read_UBYTE(modfp);
|
|
|
592 ih.chanpan = _mm_read_UBYTE(modfp);
|
|
|
593 ih.rvolvar = _mm_read_UBYTE(modfp);
|
|
|
594 ih.rpanvar = _mm_read_UBYTE(modfp);
|
|
|
595 }
|
|
|
596
|
|
|
597 ih.trkvers = _mm_read_I_UWORD(modfp);
|
|
|
598 ih.numsmp = _mm_read_UBYTE(modfp);
|
|
|
599 _mm_read_UBYTE(modfp);
|
|
|
600 _mm_read_string(ih.name,26,modfp);
|
|
|
601 _mm_read_UBYTES(ih.blank01,6,modfp);
|
|
|
602 _mm_read_I_UWORDS(ih.samptable,120,modfp);
|
|
|
603 if(mh->cwt < 0x200) // load IT 1xx volume envelope
|
|
|
604 { _mm_read_UBYTES(ih.volenv,200,modfp);
|
|
|
605 for(lp=0; lp<25; lp++)
|
|
|
606 { ih.oldvoltick[lp] = _mm_read_UBYTE(modfp);
|
|
|
607 ih.volnode[lp] = _mm_read_UBYTE(modfp);
|
|
|
608 }
|
|
|
609 } else // load IT 2xx vol & chanpan & pitch envs
|
|
|
610 { ih.volflg = _mm_read_UBYTE(modfp);
|
|
|
611 ih.volpts = _mm_read_UBYTE(modfp);
|
|
|
612 ih.volbeg = _mm_read_UBYTE(modfp);
|
|
|
613 ih.volend = _mm_read_UBYTE(modfp);
|
|
|
614 ih.volsusbeg = _mm_read_UBYTE(modfp);
|
|
|
615 ih.volsusend = _mm_read_UBYTE(modfp);
|
|
|
616 for(lp=0; lp<25; lp++)
|
|
|
617 { ih.volnode[lp] = _mm_read_UBYTE(modfp);
|
|
|
618 ih.voltick[lp] = _mm_read_I_UWORD(modfp);
|
|
|
619 }
|
|
|
620 _mm_read_UBYTE(modfp);
|
|
|
621
|
|
|
622 ih.panflg = _mm_read_UBYTE(modfp);
|
|
|
623 ih.panpts = _mm_read_UBYTE(modfp);
|
|
|
624 ih.panbeg = _mm_read_UBYTE(modfp);
|
|
|
625 ih.panend = _mm_read_UBYTE(modfp);
|
|
|
626 ih.pansusbeg = _mm_read_UBYTE(modfp);
|
|
|
627 ih.pansusend = _mm_read_UBYTE(modfp);
|
|
|
628 for(lp=0; lp<25; lp++)
|
|
|
629 { ih.pannode[lp] = _mm_read_SBYTE(modfp);
|
|
|
630 ih.pantick[lp] = _mm_read_I_UWORD(modfp);
|
|
|
631 }
|
|
|
632 _mm_read_UBYTE(modfp);
|
|
|
633
|
|
|
634 ih.pitflg = _mm_read_UBYTE(modfp);
|
|
|
635 ih.pitpts = _mm_read_UBYTE(modfp);
|
|
|
636 ih.pitbeg = _mm_read_UBYTE(modfp);
|
|
|
637 ih.pitend = _mm_read_UBYTE(modfp);
|
|
|
638 ih.pitsusbeg = _mm_read_UBYTE(modfp);
|
|
|
639 ih.pitsusend = _mm_read_UBYTE(modfp);
|
|
|
640 for(lp=0; lp<25; lp++)
|
|
|
641 { ih.pitnode[lp] = _mm_read_SBYTE(modfp);
|
|
|
642 ih.pittick[lp] = _mm_read_I_UWORD(modfp);
|
|
|
643 }
|
|
|
644 _mm_read_UBYTE(modfp);
|
|
|
645 }
|
|
|
646
|
|
|
647 if(feof(modfp))
|
|
|
648 { _mm_errno = MMERR_LOADING_SAMPLEINFO;
|
|
|
649 return 0;
|
|
|
650 }
|
|
|
651
|
|
|
652 d->volflg |= EF_VOLENV;
|
|
|
653 d->insname = DupStr(ih.name,26);
|
|
|
654 d->nnatype = ih.nna;
|
|
|
655
|
|
|
656 if(mh->cwt < 0x200)
|
|
|
657 { d->volfade = ih.fadeout << 6;
|
|
|
658 if(ih.dnc)
|
|
|
659 { d->dct = DCT_NOTE;
|
|
|
660 d->dca = DCA_CUT;
|
|
|
661 }
|
|
|
662
|
|
|
663 if(ih.volflg & 1) d->volflg |= EF_ON;
|
|
|
664 if(ih.volflg & 2) d->volflg |= EF_LOOP;
|
|
|
665 if(ih.volflg & 4) d->volflg |= EF_SUSTAIN;
|
|
|
666
|
|
|
667 // XM conversion of IT envelope Array
|
|
|
668
|
|
|
669 d->volbeg = ih.volbeg;
|
|
|
670 d->volend = ih.volend;
|
|
|
671 d->volsusbeg = ih.volsusbeg;
|
|
|
672 d->volsusend = ih.volsusend;
|
|
|
673
|
|
|
674 if(ih.volflg & 1)
|
|
|
675 { for(u=0; u<25; u++)
|
|
|
676 if(ih.oldvoltick[d->volpts] != 0xff)
|
|
|
677 { d->volenv[d->volpts].val = (ih.volnode[d->volpts] << 2);
|
|
|
678 d->volenv[d->volpts].pos = ih.oldvoltick[d->volpts];
|
|
|
679 d->volpts++;
|
|
|
680 } else break;
|
|
|
681 }
|
|
|
682 } else
|
|
|
683 { d->panning = ((ih.chanpan&127) == 64) ? 255 : (ih.chanpan&127)<<2;
|
|
|
684 if(!(ih.chanpan & 128)) d->flags |= IF_OWNPAN;
|
|
|
685
|
|
|
686 if(!(ih.ppsep & 128))
|
|
|
687 { d->pitpansep = ih.ppsep << 2;
|
|
|
688 d->pitpancenter= ih.ppcenter;
|
|
|
689 d->flags |= IF_PITCHPAN;
|
|
|
690 }
|
|
|
691 d->globvol = ih.globvol >> 1;
|
|
|
692 d->volfade = ih.fadeout << 5;
|
|
|
693 d->dct = ih.dct;
|
|
|
694 d->dca = ih.dca;
|
|
|
695
|
|
|
696 if(mh->cwt >= 0x204)
|
|
|
697 { d->rvolvar = ih.rvolvar;
|
|
|
698 d->rpanvar = ih.rpanvar;
|
|
|
699 }
|
|
|
700
|
|
|
701 if(ih.volflg & 1) d->volflg |= EF_ON;
|
|
|
702 if(ih.volflg & 2) d->volflg |= EF_LOOP;
|
|
|
703 if(ih.volflg & 4) d->volflg |= EF_SUSTAIN;
|
|
|
704
|
|
|
705 if(ih.panflg & 1) d->panflg |= EF_ON;
|
|
|
706 if(ih.panflg & 2) d->panflg |= EF_LOOP;
|
|
|
707 if(ih.panflg & 4) d->panflg |= EF_SUSTAIN;
|
|
|
708
|
|
|
709 if(ih.pitflg & 1) d->pitflg |= EF_ON;
|
|
|
710 if(ih.pitflg & 2) d->pitflg |= EF_LOOP;
|
|
|
711 if(ih.pitflg & 4) d->pitflg |= EF_SUSTAIN;
|
|
|
712
|
|
|
713 d->volpts = ih.volpts;
|
|
|
714 d->volbeg = ih.volbeg;
|
|
|
715 d->volend = ih.volend;
|
|
|
716 d->volsusbeg = ih.volsusbeg;
|
|
|
717 d->volsusend = ih.volsusend;
|
|
|
718
|
|
|
719 for(u=0; u<ih.volpts; u++)
|
|
|
720 { d->volenv[u].val = (ih.volnode[u] << 2);
|
|
|
721 d->volenv[u].pos = ih.voltick[u];
|
|
|
722 }
|
|
|
723
|
|
|
724 d->panpts = ih.panpts;
|
|
|
725 d->panbeg = ih.panbeg;
|
|
|
726 d->panend = ih.panend;
|
|
|
727 d->pansusbeg = ih.pansusbeg;
|
|
|
728 d->pansusend = ih.pansusend;
|
|
|
729
|
|
|
730 for(u=0; u<ih.panpts; u++)
|
|
|
731 { d->panenv[u].val = (ih.pannode[u]+32) << 2;
|
|
|
732 d->panenv[u].pos = ih.pantick[u];
|
|
|
733 }
|
|
|
734
|
|
|
735 d->pitpts = ih.pitpts;
|
|
|
736 d->pitbeg = ih.pitbeg;
|
|
|
737 d->pitend = ih.pitend;
|
|
|
738 d->pitsusbeg = ih.pitsusbeg;
|
|
|
739 d->pitsusend = ih.pitsusend;
|
|
|
740
|
|
|
741 for(u=0; u<ih.pitpts; u++)
|
|
|
742 { d->pitenv[u].val = (ih.pitnode[u]+32);
|
|
|
743 d->pitenv[u].pos = ih.pittick[u];
|
|
|
744 }
|
|
|
745 }
|
|
|
746
|
|
|
747 if(of.flags & UF_LINEAR)
|
|
|
748 { for(u=0; u<120; u++)
|
|
|
749 { d->samplenote[u] = (ih.samptable[u] & 255);
|
|
|
750 d->samplenumber[u] = (ih.samptable[u] >> 8) ? ((ih.samptable[u] >> 8) - 1) : 255;
|
|
|
751 if(d->samplenumber[u]!=255)
|
|
|
752 d->samplenote[u] += noteindex[d->samplenumber[u]];
|
|
|
753 }
|
|
|
754 } else
|
|
|
755 { for(u=0; u<120; u++)
|
|
|
756 { d->samplenote[u] = (ih.samptable[u] & 255);
|
|
|
757 d->samplenumber[u] = (ih.samptable[u] >> 8) ? ((ih.samptable[u] >> 8) - 1) : 255;
|
|
|
758 }
|
|
|
759 }
|
|
|
760
|
|
|
761 d++;
|
|
|
762 }
|
|
|
763 } else if(of.flags & UF_LINEAR)
|
|
|
764 { if(!AllocInstruments()) return 0;
|
|
|
765 d = of.instruments;
|
|
|
766 of.flags |= UF_INST;
|
|
|
767
|
|
|
768 for(t=0; t<mh->smpnum; t++, d++)
|
|
|
769 { for(u=0; u<120; u++)
|
|
|
770 d->samplenote[u] += noteindex[d->samplenumber[u]];
|
|
|
771 }
|
|
|
772 }
|
|
|
773
|
|
|
774
|
|
|
775 // Figure out how many channels this blasted song actually uses (what
|
|
|
776 // ever happened to common courtesy of storing this simple value
|
|
|
777 // somewhere in the damn module, eh!?)
|
|
|
778
|
|
|
779 of.numchn = 0;
|
|
|
780 memset(remap,-1,64*sizeof(UBYTE));
|
|
|
781
|
|
|
782 for(t=0; t<of.numpat; t++)
|
|
|
783 { UWORD packlen;
|
|
|
784
|
|
|
785 // seek to pattern position
|
|
|
786 if(paraptr[mh->insnum+mh->smpnum+t] != 0) // No parapointer = pattern of 64 rows, EMPTY
|
|
|
787 { _mm_fseek(modfp,(((long)paraptr[mh->insnum+mh->smpnum+t])),SEEK_SET);
|
|
|
788 packlen = _mm_read_I_UWORD(modfp);
|
|
|
789 packlen = _mm_read_I_UWORD(modfp); // read pattern length (# of rows)
|
|
|
790 _mm_read_I_ULONG(modfp);
|
|
|
791 if(IT_GetNumChannels(packlen)) return 0;
|
|
|
792 }
|
|
|
793 }
|
|
|
794
|
|
|
795 // give each of them a different number
|
|
|
796 for(t=0; t<64; t++)
|
|
|
797 { if(remap[t]==0)
|
|
|
798 { remap[t] = of.numchn;
|
|
|
799 of.numchn++;
|
|
|
800 }
|
|
|
801 }
|
|
|
802
|
|
|
803 of.numtrk = of.numpat*of.numchn;
|
|
|
804
|
|
|
805
|
|
|
806 if(!AllocPatterns()) return 0;
|
|
|
807 if(!AllocTracks()) return 0;
|
|
|
808
|
|
|
809 for(t=0; t<of.numpat; t++)
|
|
|
810 { UWORD packlen;
|
|
|
811
|
|
|
812 // seek to pattern position
|
|
|
813 if(paraptr[mh->insnum+mh->smpnum+t] == 0) // No parapointer = pattern of 64 rows, EMPTY
|
|
|
814 { of.pattrows[t] = 64;
|
|
|
815 for(u=0; u<of.numchn; u++)
|
|
|
816 { int k;
|
|
|
817 UniReset();
|
|
|
818 for(k=0; k<64; k++) UniNewline();
|
|
|
819 of.tracks[numtrk++] = UniDup();
|
|
|
820 }
|
|
|
821 } else
|
|
|
822 { _mm_fseek(modfp,(((long)paraptr[mh->insnum+mh->smpnum+t])),SEEK_SET);
|
|
|
823 packlen = _mm_read_I_UWORD(modfp);
|
|
|
824 of.pattrows[t] = _mm_read_I_UWORD(modfp);
|
|
|
825 _mm_read_I_ULONG(modfp);
|
|
|
826
|
|
|
827 if(!IT_ReadPattern(of.pattrows[t])) return 0;
|
|
|
828 }
|
|
|
829 }
|
|
|
830
|
|
|
831 return 1;
|
|
|
832 }
|
|
|
833
|
|
|
834
|
|
|
835 CHAR *IT_LoadTitle(void)
|
|
|
836 {
|
|
|
837 CHAR s[26];
|
|
|
838
|
|
|
839 _mm_fseek(modfp,4,SEEK_SET);
|
|
|
840 if(!fread(s,26,1,modfp)) return NULL;
|
|
|
841
|
|
|
842 return(DupStr(s,26));
|
|
|
843 }
|
|
|
844
|
|
|
845
|
|
|
846 MLOADER load_it =
|
|
|
847 { NULL,
|
|
|
848 "IT",
|
|
|
849 "Portable IT loader v0.2",
|
|
|
850 IT_Init,
|
|
|
851 IT_Test,
|
|
|
852 IT_Load,
|
|
|
853 IT_Cleanup,
|
|
|
854
|
|
|
855 IT_LoadTitle
|
|
|
856 };
|
|
|
857
|
