OrdinaryMagician/stuff
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Relicense as MIT.

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This commit is contained in:
Marisa the Magician 2020-10-25 10:56:47 +01:00
commit 37232c84e5
22 changed files with 196 additions and 787 deletions
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36
umxunpack.c
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@ -10,6 +10,9 @@
#define UPKG_MAGIC 0x9E2A83C1
// uncomment if you want full data dumps, helpful if you need to reverse engineer some unsupported format
//#define _DEBUG 1
typedef struct
{
uint32_t magic;
@ -28,6 +31,14 @@ uint8_t readbyte( void )
return val;
}
uint16_t readword( void )
{
uint16_t val = *(uint16_t*)(pkgfile+fpos);
fpos += 2;
return val;
}
uint32_t readdword( void )
{
uint32_t val = *(uint32_t*)(pkgfile+fpos);
@ -277,6 +288,15 @@ int main( int argc, char **argv )
if ( strncmp(n,"Music",l) ) continue;
char *trk = pkgfile+getname(name,&l);
printf("Track found: %.*s\n",l,trk);
#ifdef _DEBUG
char fname[256] = {0};
snprintf(fname,256,"%.*s.object",l,trk);
printf(" Dumping full object data to %s\n",fname);
FILE *f = fopen(fname,"wb");
fwrite(pkgfile+ofs,siz,1,f);
fclose(f);
continue;
#endif
// begin reading data
size_t prev = fpos;
fpos = ofs;
@ -284,6 +304,7 @@ int main( int argc, char **argv )
if ( head->pkgver < 55 ) fpos += 16;
if ( head->pkgver <= 44 ) fpos -= 6; // ???
if ( head->pkgver == 45 ) fpos -= 2; // ???
if ( head->pkgver == 41 ) fpos += 2; // ???
if ( head->pkgver <= 35 ) fpos += 8; // ???
// process properties
int32_t prop = readindex();
@ -293,7 +314,7 @@ int main( int argc, char **argv )
fpos = prev;
continue;
}
char *pname = pkgfile+getname(prop,&l);
char *pname = (char*)(pkgfile+getname(prop,&l));
retry:
if ( strncasecmp(pname,"None",l) )
{
@ -301,6 +322,14 @@ retry:
int array = info&0x80;
int type = info&0xf;
int psiz = (info>>4)&0x7;
int32_t tl = 0;
char *sname;
if ( type == 10 )
{
int32_t sn;
sn = readindex();
sname = (char*)(pkgfile+getname(sn,&tl));
}
switch ( psiz )
{
case 0:
@ -329,6 +358,7 @@ retry:
break;
}
//printf(" prop %.*s (%u, %u, %u, %u)\n",l,pname,array,type,(info>>4)&7,psiz);
//if ( tl ) printf(" struct: %.*s\n",tl,sname);
if ( array && (type != 3) )
{
int idx = readindex();
@ -346,7 +376,7 @@ retry:
pname = (char*)(pkgfile+getname(prop,&l));
goto retry;
}
int32_t ext;
int32_t ext, msize;
if ( head->pkgver >= 120 )
{
ext = readindex();
@ -364,7 +394,7 @@ retry:
fpos += 4;
}
else ext = readindex();
int32_t msize = readindex();
msize = readindex();
savemusic(pkgfile+fpos,msize,name,ext);
fpos = prev;
}