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rockbox/apps/plugins/mikmod/load_uni.c
Frank Gevaerts 26f2bfde03 Add MikMod plugin, ported by Jason Yu, with some minor work by Craig Mann and William Peters (FS#8806) 
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28810 a1c6a512-1295-4272-9138-f99709370657
2010-12-12 15:03:30 +00:00

717 lines
18 KiB
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/* 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_uni.c,v 1.3 2005/04/07 19:57:38 realtech Exp $
UNIMOD (libmikmod's and APlayer's internal module format) 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 */
typedef struct UNIHEADER {
CHAR id[4];
UBYTE numchn;
UWORD numpos;
UWORD reppos;
UWORD numpat;
UWORD numtrk;
UWORD numins;
UWORD numsmp;
UBYTE initspeed;
UBYTE inittempo;
UBYTE initvolume;
UWORD flags;
UBYTE numvoices;
UWORD bpmlimit;
UBYTE positions[256];
UBYTE panning[32];
} UNIHEADER;
typedef struct UNISMP05 {
UWORD c2spd;
UWORD transpose;
UBYTE volume;
UBYTE panning;
ULONG length;
ULONG loopstart;
ULONG loopend;
UWORD flags;
CHAR* samplename;
UBYTE vibtype;
UBYTE vibsweep;
UBYTE vibdepth;
UBYTE vibrate;
} UNISMP05;
/*========== Loader variables */
static UWORD universion;
static UNIHEADER mh;
#define UNI_SMPINCR 64
static UNISMP05 *wh=NULL,*s=NULL;
/*========== Loader code */
static char* readstring(void)
{
char *s=NULL;
UWORD len;
len=_mm_read_I_UWORD(modreader);
if(len) {
s=MikMod_malloc(len+1);
_mm_read_UBYTES(s,len,modreader);
s[len]=0;
}
return s;
}
int UNI_Test(void)
{
char id[6];
if(!_mm_read_UBYTES(id,6,modreader)) return 0;
/* UNIMod created by MikCvt */
if(!(memcmp(id,"UN0",3))) {
if((id[3]>='4')&&(id[3]<='6')) return 1;
}
/* UNIMod created by APlayer */
if(!(memcmp(id,"APUN\01",5))) {
if((id[5]>=1)&&(id[5]<=6)) return 1;
}
return 0;
}
int UNI_Init(void)
{
return 1;
}
void UNI_Cleanup(void)
{
MikMod_free(wh);
s=NULL;
}
static UBYTE* readtrack(void)
{
UBYTE *t;
UWORD len;
int cur=0,chunk;
if(universion>=6)
len=_mm_read_M_UWORD(modreader);
else
len=_mm_read_I_UWORD(modreader);
if(!len) return NULL;
if(!(t=MikMod_malloc(len))) return NULL;
_mm_read_UBYTES(t,len,modreader);
/* Check if the track is correct */
while(1) {
chunk=t[cur++];
if(!chunk) break;
chunk=(chunk&0x1f)-1;
while(chunk>0) {
int opcode,oplen;
if(cur>=len) {
MikMod_free(t);
return NULL;
}
opcode=t[cur];
/* Remap opcodes */
if (universion <= 5) {
if (opcode > 29) {
MikMod_free(t);
return NULL;
}
switch (opcode) {
/* UNI_NOTE .. UNI_S3MEFFECTQ are the same */
case 25:
opcode = UNI_S3MEFFECTT;
break;
case 26:
opcode = UNI_XMEFFECTA;
break;
case 27:
opcode = UNI_XMEFFECTG;
break;
case 28:
opcode = UNI_XMEFFECTH;
break;
case 29:
opcode = UNI_XMEFFECTP;
break;
}
} else {
/* APlayer < 1.05 does not have XMEFFECT6 */
if (opcode >= UNI_XMEFFECT6 && universion < 0x105)
opcode++;
/* APlayer < 1.03 does not have ITEFFECTT */
if (opcode >= UNI_ITEFFECTT && universion < 0x103)
opcode++;
/* APlayer < 1.02 does not have ITEFFECTZ */
if (opcode >= UNI_ITEFFECTZ && universion < 0x102)
opcode++;
}
if((!opcode)||(opcode>=UNI_LAST)) {
MikMod_free(t);
return NULL;
}
t[cur]=opcode;
oplen=unioperands[opcode]+1;
cur+=oplen;
chunk-=oplen;
}
if((chunk<0)||(cur>=len)) {
MikMod_free(t);
return NULL;
}
}
return t;
}
static int loadsmp6(void)
{
int t;
SAMPLE *s;
s=of.samples;
for(t=0;t<of.numsmp;t++,s++) {
int flags;
flags = _mm_read_M_UWORD(modreader);
s->flags=0;
if(flags&0x0004) s->flags|=SF_STEREO;
if(flags&0x0002) s->flags|=SF_SIGNED;
if(flags&0x0001) s->flags|=SF_16BITS;
/* convert flags */
if(universion>=0x104) {
if(flags&0x2000) s->flags|=SF_UST_LOOP;
if(flags&0x1000) s->flags|=SF_OWNPAN;
if(flags&0x0800) s->flags|=SF_SUSTAIN;
if(flags&0x0400) s->flags|=SF_REVERSE;
if(flags&0x0200) s->flags|=SF_BIDI;
if(flags&0x0100) s->flags|=SF_LOOP;
if(flags&0x0020) s->flags|=SF_ITPACKED;
if(flags&0x0010) s->flags|=SF_DELTA;
if(flags&0x0008) s->flags|=SF_BIG_ENDIAN;
} else if(universion>=0x102) {
if(flags&0x0800) s->flags|=SF_UST_LOOP;
if(flags&0x0400) s->flags|=SF_OWNPAN;
if(flags&0x0200) s->flags|=SF_SUSTAIN;
if(flags&0x0100) s->flags|=SF_REVERSE;
if(flags&0x0080) s->flags|=SF_BIDI;
if(flags&0x0040) s->flags|=SF_LOOP;
if(flags&0x0020) s->flags|=SF_ITPACKED;
if(flags&0x0010) s->flags|=SF_DELTA;
if(flags&0x0008) s->flags|=SF_BIG_ENDIAN;
} else {
if(flags&0x400) s->flags|=SF_UST_LOOP;
if(flags&0x200) s->flags|=SF_OWNPAN;
if(flags&0x100) s->flags|=SF_REVERSE;
if(flags&0x080) s->flags|=SF_SUSTAIN;
if(flags&0x040) s->flags|=SF_BIDI;
if(flags&0x020) s->flags|=SF_LOOP;
if(flags&0x010) s->flags|=SF_BIG_ENDIAN;
if(flags&0x008) s->flags|=SF_DELTA;
}
s->speed = _mm_read_M_ULONG(modreader);
s->volume = _mm_read_UBYTE(modreader);
s->panning = _mm_read_M_UWORD(modreader);
s->length = _mm_read_M_ULONG(modreader);
s->loopstart = _mm_read_M_ULONG(modreader);
s->loopend = _mm_read_M_ULONG(modreader);
s->susbegin = _mm_read_M_ULONG(modreader);
s->susend = _mm_read_M_ULONG(modreader);
s->globvol = _mm_read_UBYTE(modreader);
s->vibflags = _mm_read_UBYTE(modreader);
s->vibtype = _mm_read_UBYTE(modreader);
s->vibsweep = _mm_read_UBYTE(modreader);
s->vibdepth = _mm_read_UBYTE(modreader);
s->vibrate = _mm_read_UBYTE(modreader);
s->samplename=readstring();
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
}
return 1;
}
static int loadinstr6(void)
{
int t,w;
INSTRUMENT *i;
i=of.instruments;
for(t=0;t<of.numins;t++,i++) {
i->flags = _mm_read_UBYTE(modreader);
i->nnatype = _mm_read_UBYTE(modreader);
i->dca = _mm_read_UBYTE(modreader);
i->dct = _mm_read_UBYTE(modreader);
i->globvol = _mm_read_UBYTE(modreader);
i->panning = _mm_read_M_UWORD(modreader);
i->pitpansep = _mm_read_UBYTE(modreader);
i->pitpancenter = _mm_read_UBYTE(modreader);
i->rvolvar = _mm_read_UBYTE(modreader);
i->rpanvar = _mm_read_UBYTE(modreader);
i->volfade = _mm_read_M_UWORD(modreader);
#if defined __STDC__ || defined _MSC_VER || defined MPW_C
#define UNI_LoadEnvelope6(name) \
i-> name##flg=_mm_read_UBYTE(modreader); \
i-> name##pts=_mm_read_UBYTE(modreader); \
i-> name##susbeg=_mm_read_UBYTE(modreader); \
i-> name##susend=_mm_read_UBYTE(modreader); \
i-> name##beg=_mm_read_UBYTE(modreader); \
i-> name##end=_mm_read_UBYTE(modreader); \
for(w=0;w<(universion>=0x100?32:i-> name##pts);w++) { \
i-> name##env[w].pos=_mm_read_M_SWORD(modreader); \
i-> name##env[w].val=_mm_read_M_SWORD(modreader); \
}
#else
#define UNI_LoadEnvelope6(name) \
i-> name/**/flg=_mm_read_UBYTE(modreader); \
i-> name/**/pts=_mm_read_UBYTE(modreader); \
i-> name/**/susbeg=_mm_read_UBYTE(modreader); \
i-> name/**/susend=_mm_read_UBYTE(modreader); \
i-> name/**/beg=_mm_read_UBYTE(modreader); \
i-> name/**/end=_mm_read_UBYTE(modreader); \
for (w=0;w<(universion>=0x100?32:i-> name/**/pts);w++) { \
i-> name/**/env[w].pos=_mm_read_M_SWORD(modreader); \
i-> name/**/env[w].val=_mm_read_M_SWORD(modreader); \
}
#endif
UNI_LoadEnvelope6(vol);
UNI_LoadEnvelope6(pan);
UNI_LoadEnvelope6(pit);
#undef UNI_LoadEnvelope6
if(universion>=0x103)
_mm_read_M_UWORDS(i->samplenumber,120,modreader);
else
for(w=0;w<120;w++)
i->samplenumber[w]=_mm_read_UBYTE(modreader);
_mm_read_UBYTES(i->samplenote,120,modreader);
i->insname=readstring();
if(_mm_eof(modreader)) {
_mm_errno = MMERR_LOADING_SAMPLEINFO;
return 0;
}
}
return 1;
}
static int loadinstr5(void)
{
INSTRUMENT *i;
int t;
UWORD wavcnt=0;
UBYTE vibtype,vibsweep,vibdepth,vibrate;
i=of.instruments;
for(of.numsmp=t=0;t<of.numins;t++,i++) {
int u,numsmp;
numsmp=_mm_read_UBYTE(modreader);
memset(i->samplenumber,0xff,INSTNOTES*sizeof(UWORD));
for(u=0;u<96;u++)
i->samplenumber[u]=of.numsmp+_mm_read_UBYTE(modreader);
#if defined __STDC__ || defined _MSC_VER || defined MPW_C
#define UNI_LoadEnvelope5(name) \
i-> name##flg=_mm_read_UBYTE(modreader); \
i-> name##pts=_mm_read_UBYTE(modreader); \
i-> name##susbeg=_mm_read_UBYTE(modreader); \
i-> name##susend=i-> name##susbeg; \
i-> name##beg=_mm_read_UBYTE(modreader); \
i-> name##end=_mm_read_UBYTE(modreader); \
for(u=0;u<12;u++) { \
i-> name##env[u].pos=_mm_read_I_SWORD(modreader); \
i-> name##env[u].val=_mm_read_I_SWORD(modreader); \
}
#else
#define UNI_LoadEnvelope5(name) \
i-> name/**/flg=_mm_read_UBYTE(modreader); \
i-> name/**/pts=_mm_read_UBYTE(modreader); \
i-> name/**/susbeg=_mm_read_UBYTE(modreader); \
i-> name/**/susend=i-> name/**/susbeg; \
i-> name/**/beg=_mm_read_UBYTE(modreader); \
i-> name/**/end=_mm_read_UBYTE(modreader); \
for(u=0;u<12;u++) { \
i-> name/**/env[u].pos=_mm_read_I_SWORD(modreader); \
i-> name/**/env[u].val=_mm_read_I_SWORD(modreader); \
}
#endif
UNI_LoadEnvelope5(vol);
UNI_LoadEnvelope5(pan);
#undef UNI_LoadEnvelope5
vibtype =_mm_read_UBYTE(modreader);
vibsweep =_mm_read_UBYTE(modreader);
vibdepth =_mm_read_UBYTE(modreader);
vibrate =_mm_read_UBYTE(modreader);
i->volfade=_mm_read_I_UWORD(modreader);
i->insname=readstring();
for(u=0;u<numsmp;u++,s++,of.numsmp++) {
/* Allocate more room for sample information if necessary */
if(of.numsmp+u==wavcnt) {
wavcnt+=UNI_SMPINCR;
if(!(wh=MikMod_realloc(wh,wavcnt*sizeof(UNISMP05)))) {
_mm_errno=MMERR_OUT_OF_MEMORY;
return 0;
}
s=wh+(wavcnt-UNI_SMPINCR);
}
s->c2spd =_mm_read_I_UWORD(modreader);
s->transpose=_mm_read_SBYTE(modreader);
s->volume =_mm_read_UBYTE(modreader);
s->panning =_mm_read_UBYTE(modreader);
s->length =_mm_read_I_ULONG(modreader);
s->loopstart=_mm_read_I_ULONG(modreader);
s->loopend =_mm_read_I_ULONG(modreader);
s->flags =_mm_read_I_UWORD(modreader);
s->samplename=readstring();
s->vibtype =vibtype;
s->vibsweep=vibsweep;
s->vibdepth=vibdepth;
s->vibrate =vibrate;
if(_mm_eof(modreader)) {
MikMod_free(wh);wh=NULL;
_mm_errno=MMERR_LOADING_SAMPLEINFO;
return 0;
}
}
}
/* sanity check */
if(!of.numsmp) {
if(wh) { MikMod_free(wh);wh=NULL; }
_mm_errno=MMERR_LOADING_SAMPLEINFO;
return 0;
}
return 1;
}
static int loadsmp5(void)
{
int t,u;
SAMPLE *q;
INSTRUMENT *d;
q=of.samples;s=wh;
for(u=0;u<of.numsmp;u++,q++,s++) {
q->samplename=s->samplename;
q->length =s->length;
q->loopstart=s->loopstart;
q->loopend =s->loopend;
q->volume =s->volume;
q->speed =s->c2spd;
q->panning =s->panning;
q->vibtype =s->vibtype;
q->vibsweep =s->vibsweep;
q->vibdepth =s->vibdepth;
q->vibrate =s->vibrate;
/* convert flags */
q->flags=0;
if(s->flags&128) q->flags|=SF_REVERSE;
if(s->flags& 64) q->flags|=SF_SUSTAIN;
if(s->flags& 32) q->flags|=SF_BIDI;
if(s->flags& 16) q->flags|=SF_LOOP;
if(s->flags& 8) q->flags|=SF_BIG_ENDIAN;
if(s->flags& 4) q->flags|=SF_DELTA;
if(s->flags& 2) q->flags|=SF_SIGNED;
if(s->flags& 1) q->flags|=SF_16BITS;
}
d=of.instruments;s=wh;
for(u=0;u<of.numins;u++,d++)
for(t=0;t<INSTNOTES;t++)
d->samplenote[t]=(d->samplenumber[t]>=of.numsmp)?
255:(t+s[d->samplenumber[t]].transpose);
MikMod_free(wh);wh=NULL;
return 1;
}
int UNI_Load(int curious)
{
int t;
char *modtype,*oldtype=NULL;
INSTRUMENT *d;
SAMPLE *q;
/* read module header */
_mm_read_UBYTES(mh.id,4,modreader);
if(mh.id[3]!='N')
universion=mh.id[3]-'0';
else
universion=0x100;
if(universion>=6) {
if (universion==6)
_mm_read_UBYTE(modreader);
else
universion=_mm_read_M_UWORD(modreader);
mh.flags =_mm_read_M_UWORD(modreader);
mh.numchn =_mm_read_UBYTE(modreader);
mh.numvoices =_mm_read_UBYTE(modreader);
mh.numpos =_mm_read_M_UWORD(modreader);
mh.numpat =_mm_read_M_UWORD(modreader);
mh.numtrk =_mm_read_M_UWORD(modreader);
mh.numins =_mm_read_M_UWORD(modreader);
mh.numsmp =_mm_read_M_UWORD(modreader);
mh.reppos =_mm_read_M_UWORD(modreader);
mh.initspeed =_mm_read_UBYTE(modreader);
mh.inittempo =_mm_read_UBYTE(modreader);
mh.initvolume=_mm_read_UBYTE(modreader);
/* I expect this to show up soon in APlayer 1.06 format */
if (universion >= 0x106)
mh.bpmlimit=_mm_read_M_UWORD(modreader);
else
mh.bpmlimit=32;
mh.flags &= UF_XMPERIODS | UF_LINEAR | UF_INST | UF_NNA;
mh.flags |= UF_PANNING;
} else {
mh.numchn =_mm_read_UBYTE(modreader);
mh.numpos =_mm_read_I_UWORD(modreader);
mh.reppos =(universion==5)?_mm_read_I_UWORD(modreader):0;
mh.numpat =_mm_read_I_UWORD(modreader);
mh.numtrk =_mm_read_I_UWORD(modreader);
mh.numins =_mm_read_I_UWORD(modreader);
mh.initspeed =_mm_read_UBYTE(modreader);
mh.inittempo =_mm_read_UBYTE(modreader);
_mm_read_UBYTES(mh.positions,256,modreader);
_mm_read_UBYTES(mh.panning,32,modreader);
mh.flags =_mm_read_UBYTE(modreader);
mh.bpmlimit =32;
mh.flags &= UF_XMPERIODS | UF_LINEAR;
mh.flags |= UF_INST | UF_NOWRAP | UF_PANNING;
}
/* set module parameters */
of.flags =mh.flags;
of.numchn =mh.numchn;
of.numpos =mh.numpos;
of.numpat =mh.numpat;
of.numtrk =mh.numtrk;
of.numins =mh.numins;
of.reppos =mh.reppos;
of.initspeed =mh.initspeed;
of.inittempo =mh.inittempo;
if(mh.bpmlimit)
of.bpmlimit=mh.bpmlimit;
else
/* be bug-compatible with older releases */
of.bpmlimit=32;
of.songname=readstring();
if(universion<0x102)
oldtype=readstring();
if(oldtype) {
size_t len=strlen(oldtype)+20;
if(!(modtype=MikMod_malloc(len))) return 0;
#ifdef HAVE_SNPRINTF
snprintf(modtype,len,"%s (was %s)",(universion>=0x100)?"APlayer":"MikCvt2",oldtype);
#else
sprintf(modtype,"%s (was %s)",(universion>=0x100)?"APlayer":"MikCvt2",oldtype);
#endif
} else {
if(!(modtype=MikMod_malloc(10))) return 0;
#ifdef HAVE_SNPRINTF
snprintf(modtype,10,"%s",(universion>=0x100)?"APlayer":"MikCvt3");
#else
sprintf(modtype,"%s",(universion>=0x100)?"APlayer":"MikCvt3");
#endif
}
of.modtype=StrDup(modtype);
MikMod_free(modtype);MikMod_free(oldtype);
of.comment=readstring();
if(universion>=6) {
of.numvoices=mh.numvoices;
of.initvolume=mh.initvolume;
}
if(_mm_eof(modreader)) {
_mm_errno=MMERR_LOADING_HEADER;
return 0;
}
/* positions */
if(!AllocPositions(of.numpos)) return 0;
if(universion>=6) {
if(universion>=0x100)
_mm_read_M_UWORDS(of.positions,of.numpos,modreader);
else
for(t=0;t<of.numpos;t++) of.positions[t]=_mm_read_UBYTE(modreader);
_mm_read_M_UWORDS(of.panning,of.numchn,modreader);
_mm_read_UBYTES(of.chanvol,of.numchn,modreader);
} else {
if((mh.numpos>256)||(mh.numchn>32)) {
_mm_errno=MMERR_LOADING_HEADER;
return 0;
}
for(t=0;t<of.numpos;t++) of.positions[t]=mh.positions[t];
for(t=0;t<of.numchn;t++) of.panning[t]=mh.panning[t];
}
/* convert the ``end of song'' pattern code if necessary */
if(universion<0x106)
for(t=0;t<of.numpos;t++)
if(of.positions[t]==255) of.positions[t]=LAST_PATTERN;
/* instruments and samples */
if(universion>=6) {
of.numsmp=mh.numsmp;
if(!AllocSamples()) return 0;
if(!loadsmp6()) return 0;
if(of.flags&UF_INST) {
if(!AllocInstruments()) return 0;
if(!loadinstr6()) return 0;
}
} else {
if(!AllocInstruments()) return 0;
if(!loadinstr5()) return 0;
if(!AllocSamples()) {
if(wh) { MikMod_free(wh);wh=NULL; }
return 0;
}
if(!loadsmp5()) return 0;
/* check if the original file had no instruments */
if(of.numsmp==of.numins) {
for(t=0,d=of.instruments;t<of.numins;t++,d++) {
int u;
if((d->volpts)||(d->panpts)||(d->globvol!=64)) break;
for(u=0;u<96;u++)
if((d->samplenumber[u]!=t)||(d->samplenote[u]!=u)) break;
if(u!=96) break;
}
if(t==of.numins) {
of.flags&=~UF_INST;
of.flags&=~UF_NOWRAP;
for(t=0,d=of.instruments,q=of.samples;t<of.numins;t++,d++,q++) {
q->samplename=d->insname;
d->insname=NULL;
}
}
}
}
/* patterns */
if(!AllocPatterns()) return 0;
if(universion>=6) {
_mm_read_M_UWORDS(of.pattrows,of.numpat,modreader);
_mm_read_M_UWORDS(of.patterns,of.numpat*of.numchn,modreader);
} else {
_mm_read_I_UWORDS(of.pattrows,of.numpat,modreader);
_mm_read_I_UWORDS(of.patterns,of.numpat*of.numchn,modreader);
}
/* tracks */
if(!AllocTracks()) return 0;
for(t=0;t<of.numtrk;t++)
if(!(of.tracks[t]=readtrack())) {
_mm_errno=MMERR_LOADING_TRACK;
return 0;
}
return 1;
}
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();
}
/*========== Loader information */
MIKMODAPI MLOADER load_uni={
NULL,
"UNI",
"APUN (APlayer) and UNI (MikMod)",
UNI_Init,
UNI_Test,
UNI_Load,
UNI_Cleanup,
UNI_LoadTitle
};
/* ex:set ts=4: */
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