369 lines
8.6 KiB
C
369 lines
8.6 KiB
C
/* MikMod sound library
|
|
(c) 1998, 1999, 2000, 2001, 2002 Miodrag Vallat and others - see file
|
|
AUTHORS for complete list.
|
|
|
|
This library is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of
|
|
the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with this library; if not, write to the Free Software
|
|
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
|
|
02111-1307, USA.
|
|
*/
|
|
|
|
/*==============================================================================
|
|
|
|
$Id: load_669.c,v 1.3 2005/04/07 19:57:38 realtech Exp $
|
|
|
|
Composer 669 module loader
|
|
|
|
==============================================================================*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include <stdio.h>
|
|
#ifdef HAVE_MEMORY_H
|
|
#include <memory.h>
|
|
#endif
|
|
#include <string.h>
|
|
|
|
#include "mikmod_internals.h"
|
|
|
|
#ifdef SUNOS
|
|
extern int fprintf(FILE *, const char *, ...);
|
|
#endif
|
|
|
|
/*========== Module structure */
|
|
|
|
/* header */
|
|
typedef struct S69HEADER {
|
|
UBYTE marker[2];
|
|
CHAR message[108];
|
|
UBYTE nos;
|
|
UBYTE rbnop;
|
|
UBYTE looporder;
|
|
UBYTE orders[0x80];
|
|
UBYTE tempos[0x80];
|
|
UBYTE breaks[0x80];
|
|
} S69HEADER;
|
|
|
|
/* sample information */
|
|
typedef struct S69SAMPLE {
|
|
CHAR filename[13];
|
|
SLONG length;
|
|
SLONG loopbeg;
|
|
SLONG loopend;
|
|
} S69SAMPLE;
|
|
|
|
/* encoded note */
|
|
typedef struct S69NOTE {
|
|
UBYTE a,b,c;
|
|
} S69NOTE;
|
|
|
|
/*========== Loader variables */
|
|
|
|
/* current pattern */
|
|
static S69NOTE* s69pat=NULL;
|
|
/* Module header */
|
|
static S69HEADER* mh=NULL;
|
|
|
|
/* file type identification */
|
|
static CHAR* S69_Version[]={
|
|
"Composer 669",
|
|
"Extended 669"
|
|
};
|
|
|
|
/*========== Loader code */
|
|
|
|
static int 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 int S69_Init(void)
|
|
{
|
|
if(!(s69pat=(S69NOTE *)MikMod_malloc(64*8*sizeof(S69NOTE)))) return 0;
|
|
if(!(mh=(S69HEADER *)MikMod_malloc(sizeof(S69HEADER)))) return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static void S69_Cleanup(void)
|
|
{
|
|
MikMod_free(s69pat);
|
|
MikMod_free(mh);
|
|
}
|
|
|
|
static int S69_LoadPatterns(void)
|
|
{
|
|
int track,row,channel;
|
|
UBYTE note,inst,vol,effect,lastfx,lastval;
|
|
S69NOTE *cur;
|
|
int tracks=0;
|
|
|
|
if(!AllocPatterns()) return 0;
|
|
if(!AllocTracks()) return 0;
|
|
|
|
for(track=0;track<of.numpat;track++) {
|
|
/* set pattern break locations */
|
|
of.pattrows[track]=mh->breaks[track]+1;
|
|
|
|
/* load the 669 pattern */
|
|
cur=s69pat;
|
|
for(row=0;row<64;row++) {
|
|
for(channel=0;channel<8;channel++,cur++) {
|
|
cur->a = _mm_read_UBYTE(modreader);
|
|
cur->b = _mm_read_UBYTE(modreader);
|
|
cur->c = _mm_read_UBYTE(modreader);
|
|
}
|
|
}
|
|
|
|
if(_mm_eof(modreader)) {
|
|
_mm_errno = MMERR_LOADING_PATTERN;
|
|
return 0;
|
|
}
|
|
|
|
/* translate the pattern */
|
|
for(channel=0;channel<8;channel++) {
|
|
UniReset();
|
|
/* set pattern tempo */
|
|
UniPTEffect(0xf,78);
|
|
UniPTEffect(0xf,mh->tempos[track]);
|
|
|
|
lastfx=0xff,lastval=0;
|
|
|
|
for(row=0;row<=mh->breaks[track];row++) {
|
|
int a,b,c;
|
|
|
|
/* fetch the encoded note */
|
|
a=s69pat[(row*8)+channel].a;
|
|
b=s69pat[(row*8)+channel].b;
|
|
c=s69pat[(row*8)+channel].c;
|
|
|
|
/* decode it */
|
|
note=a>>2;
|
|
inst=((a&0x3)<<4)|((b&0xf0)>>4);
|
|
vol=b&0xf;
|
|
|
|
if (a<0xff) {
|
|
if (a<0xfe) {
|
|
UniInstrument(inst);
|
|
UniNote(note+2*OCTAVE);
|
|
lastfx=0xff; /* reset background effect memory */
|
|
}
|
|
UniPTEffect(0xc,vol<<2);
|
|
}
|
|
|
|
if ((c!=0xff)||(lastfx!=0xff)) {
|
|
if(c==0xff)
|
|
c=lastfx,effect=lastval;
|
|
else
|
|
effect=c&0xf;
|
|
|
|
switch(c>>4) {
|
|
case 0: /* porta up */
|
|
UniPTEffect(0x1,effect);
|
|
lastfx=c,lastval=effect;
|
|
break;
|
|
case 1: /* porta down */
|
|
UniPTEffect(0x2,effect);
|
|
lastfx=c,lastval=effect;
|
|
break;
|
|
case 2: /* porta to note */
|
|
UniPTEffect(0x3,effect);
|
|
lastfx=c,lastval=effect;
|
|
break;
|
|
case 3: /* frequency adjust */
|
|
/* DMP converts this effect to S3M FF1. Why not ? */
|
|
UniEffect(UNI_S3MEFFECTF,0xf0|effect);
|
|
break;
|
|
case 4: /* vibrato */
|
|
UniPTEffect(0x4,effect);
|
|
lastfx=c,lastval=effect;
|
|
break;
|
|
case 5: /* set speed */
|
|
if (effect)
|
|
UniPTEffect(0xf,effect);
|
|
else
|
|
if(mh->marker[0]!=0x69) {
|
|
#ifdef MIKMOD_DEBUG
|
|
fprintf(stderr,"\r669: unsupported super fast tempo at pat=%d row=%d chan=%d\n",
|
|
track,row,channel);
|
|
#endif
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
UniNewline();
|
|
}
|
|
if(!(of.tracks[tracks++]=UniDup())) return 0;
|
|
}
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
static int S69_Load(int curious)
|
|
{
|
|
int i;
|
|
SAMPLE *current;
|
|
S69SAMPLE sample;
|
|
(void)curious;
|
|
|
|
/* module header */
|
|
_mm_read_UBYTES(mh->marker,2,modreader);
|
|
_mm_read_UBYTES(mh->message,108,modreader);
|
|
mh->nos=_mm_read_UBYTE(modreader);
|
|
mh->rbnop=_mm_read_UBYTE(modreader);
|
|
mh->looporder=_mm_read_UBYTE(modreader);
|
|
_mm_read_UBYTES(mh->orders,0x80,modreader);
|
|
for(i=0;i<0x80;i++)
|
|
if ((mh->orders[i]>=0x80)&&(mh->orders[i]!=0xff)) {
|
|
_mm_errno=MMERR_NOT_A_MODULE;
|
|
return 1;
|
|
}
|
|
_mm_read_UBYTES(mh->tempos,0x80,modreader);
|
|
for(i=0;i<0x80;i++)
|
|
if ((!mh->tempos[i])||(mh->tempos[i]>32)) {
|
|
_mm_errno=MMERR_NOT_A_MODULE;
|
|
return 1;
|
|
}
|
|
_mm_read_UBYTES(mh->breaks,0x80,modreader);
|
|
for(i=0;i<0x80;i++)
|
|
if (mh->breaks[i]>0x3f) {
|
|
_mm_errno=MMERR_NOT_A_MODULE;
|
|
return 1;
|
|
}
|
|
|
|
/* set module variables */
|
|
of.initspeed=4;
|
|
of.inittempo=78;
|
|
of.songname=DupStr(mh->message,36,1);
|
|
of.modtype=StrDup(S69_Version[memcmp(mh->marker,"JN",2)==0]);
|
|
of.numchn=8;
|
|
of.numpat=mh->rbnop;
|
|
of.numins=of.numsmp=mh->nos;
|
|
of.numtrk=of.numchn*of.numpat;
|
|
of.flags=UF_XMPERIODS|UF_LINEAR;
|
|
|
|
for(i= 35;(i>= 0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
|
|
for(i=36+35;(i>=36+0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
|
|
for(i=72+35;(i>=72+0)&&(mh->message[i]==' ');i--) mh->message[i]=0;
|
|
if((mh->message[0])||(mh->message[36])||(mh->message[72]))
|
|
if((of.comment=(CHAR*)MikMod_malloc(3*(36+1)+1))) {
|
|
strncpy(of.comment,mh->message,36);
|
|
strcat(of.comment,"\r");
|
|
if (mh->message[36]) strncat(of.comment,mh->message+36,36);
|
|
strcat(of.comment,"\r");
|
|
if (mh->message[72]) strncat(of.comment,mh->message+72,36);
|
|
strcat(of.comment,"\r");
|
|
of.comment[3*(36+1)]=0;
|
|
}
|
|
|
|
if(!AllocPositions(0x80)) return 0;
|
|
for(i=0;i<0x80;i++) {
|
|
if(mh->orders[i]>=mh->rbnop) break;
|
|
of.positions[i]=mh->orders[i];
|
|
}
|
|
of.numpos=i;
|
|
of.reppos=mh->looporder<of.numpos?mh->looporder:0;
|
|
|
|
if(!AllocSamples()) return 0;
|
|
current=of.samples;
|
|
|
|
for(i=0;i<of.numins;i++) {
|
|
/* sample information */
|
|
_mm_read_UBYTES((UBYTE*)sample.filename,13,modreader);
|
|
sample.length=_mm_read_I_SLONG(modreader);
|
|
sample.loopbeg=_mm_read_I_SLONG(modreader);
|
|
sample.loopend=_mm_read_I_SLONG(modreader);
|
|
if (sample.loopend==0xfffff) sample.loopend=0;
|
|
|
|
if((sample.length<0)||(sample.loopbeg<-1)||(sample.loopend<-1)) {
|
|
_mm_errno = MMERR_LOADING_HEADER;
|
|
return 0;
|
|
}
|
|
|
|
current->samplename=DupStr(sample.filename,13,1);
|
|
current->seekpos=0;
|
|
current->speed=0;
|
|
current->length=sample.length;
|
|
current->loopstart=sample.loopbeg;
|
|
current->loopend=sample.loopend;
|
|
current->flags=(sample.loopbeg<sample.loopend)?SF_LOOP:0;
|
|
current->volume=64;
|
|
|
|
current++;
|
|
}
|
|
|
|
if(!S69_LoadPatterns()) return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
static 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));
|
|
}
|
|
|
|
/*========== Loader information */
|
|
|
|
MIKMODAPI MLOADER load_669={
|
|
NULL,
|
|
"669",
|
|
"669 (Composer 669, Unis 669)",
|
|
S69_Init,
|
|
S69_Test,
|
|
S69_Load,
|
|
S69_Cleanup,
|
|
S69_LoadTitle
|
|
};
|
|
|
|
/* ex:set ts=4: */
|