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ID666.cpp
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ID666.cpp
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/***************************************************************************************************
* ID666 Tag Manager *
* Copyright (C)2001-2005 Alpha-II Productions *
***************************************************************************************************/
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include "Types.h"
#include "A2Str.h"
#include "ID666.h"
//File header text
const s8 EmuList[XID6_EMULIST][12] =
{"unknown","ZSNES","Snes9x","ZST2SPC","ETC","SNEShout","ZSNESW"};
static const s8 SPCFileID[] = {"SNES-SPC700 Sound File Data v0.30"};
static const s8 SPCTerm[4] = {0x1a,0x1a,0x1a,0x1e};
static const s8 xid6[4] = {'x','i','d','6'};
static const s8 ZSTFileID[] = {"ZSNES Save State File"};
static const s8 SFCFileID[] = {"GAME DOCTOR SF 3"};
static const u32 ROMOffset[4] = {0x7FC0, 0xFFC0, 0x81C0, 0x101C0};
#if ID666_ROM
static const char ROMMaker[256][32];
#endif
#if 0
static const u8 IDList[] = {
XID6_SONG,
XID6_GAME,
XID6_ARTIST,
XID6_DUMPER,
XID6_DATE,
XID6_EMU,
XID6_CMNTS,
XID6_INTRO,
XID6_LOOP,
XID6_END,
XID6_FADE,
XID6_MUTE,
XID6_LOOPX,
XID6_AMP,
XID6_OST,
XID6_DISC,
XID6_TRACK,
XID6_PUB,
XID6_COPY};
#endif
static ROMHdr ROMInfo;
u32 ID666::defSong;
u32 ID666::defFade;
b8 ID666::preferBin;
////////////////////////////////////////////////////////////////////////////////////////////////////
//**************************************************************************************************
ID666::ID666()
{
bin = false;
file[0] = 0;
mute = 0;
amp = 0;
}
////////////////////////////////////////////////////////////////////////////////////////////////////
// Private Functions
//**************************************************************************************************
// Get ID666 Tag
//
// Retrieves the individual components of the ID666 tag from an SPC header
//
// Note:
// This function does not modify any extended fields
//
// In:
// -> SPC header containing ID666 tag
void ID666::GetID666(SPCHdr &spc)
{
s32 i,j,k;
u32 d,m,y;
s8 str[36];
s8 songStr[4]; //Song in seconds
s8 fadeStr[6]; //Fade in ms
s8* t;
//Copy known fields ------------------------
str[32] = 0;
memcpy(song, spc.song, 32);
song[32] = 0;
memcpy(game, spc.game, 32);
game[32] = 0;
memcpy(dumper, spc.dumper, 16);
dumper[16] = 0;
memcpy(comment, spc.comment, 32);
comment[32] = 0;
memcpy(songStr, spc.songLen, 3);
memcpy(fadeStr, spc.fadeLen, 5);
mute = 0;
amp = 0;
date.date = 0;
//Determine tag type -----------------------
i = IsText(songStr, 3);
j = IsText(fadeStr, 5);
k = IsText(spc.date, 11);
if (!(i | j | k)) //If no times or date, use default
{
if (spc.chnDis == 1 && spc.emulator == 0) //Was the file dumped with ZSNES?
bin = true;
else
bin = preferBin;
}
else
if (i != -1 && j != -1) //If no time, or time is text
{
if (k > 0)
bin = false; //If date is text, then tag is text
else
if (k == 0) //No date
bin = preferBin; //Times could still be binary (ex. 56 bin = '8' txt)
else
if (k == -1) //Date contains invalid characters
{
if (!((u32*)&spc.date)[1]) //If bytes 4-7 are 0's, it's probably a ZSNES dump
bin = true;
else
bin = false; //Otherwise date may contain alpha characters
}
}
else
bin = true; //If time is not text, tag is binary
//Get fields dependant on tag type ---------
if (bin)
{
j = *(u32*)(fadeStr);
if (j > 59999) j = 59999;
i = *(u16*)(songStr);
if (i > 959) i = 959;
intro = i;
fade = j;
memcpy(artist, spc.artist-1, 32);
artist[32] = 0;
emu = spc.chnDis;
datetxt[0] = 0;
y = *(u16*)(&spc.date[2]);
m = *(u8*)(&spc.date[1]);
d = *(u8*)(&spc.date[0]);
}
else
{
intro = atoi(songStr);
fade = atoi(fadeStr);
if (intro > 959) intro = 959;
if (fade > 59999) fade = 59999;
memcpy(artist, spc.artist, 32);
artist[32] = 0;
emu = spc.emulator;
if (emu>=0x30 && emu<=0x39)
emu -= 0x30;
else
emu = 0;
memcpy(datetxt, spc.date, 11);
y = 0;
strcpy(str, datetxt);
if (str[0] != 0)
{
t = strchr(str, '/');
if (t && *(++t)!=0)
{
d = atoi(t);
t = strchr(t, '/');
if (t && *(++t)!=0)
{
y = atoi(t);
m = atoi(str);
}
}
}
}
SetDate(y, m, d);
//Change song/fade length to ticks ---------
intro *= XID6_TICKSSEC;
fade <<= 6;
if (!intro) fade = 0;
}
//**************************************************************************************************
// Get Extended ID666 Tag
//
// Reads the sub-chunks in an extended ID666 tag chunk
//
// In:
// pTag -> Buffer containing XID6 chunk
// size = Size of buffer
//
// Out:
// True, if file has an XID6 tag
b8 ID666::GetXID6(XID6Field* pTag, s32 size)
{
s32 i,r;
#ifdef TIDY
s32 sb;
XID6Chk* ptb;
b8 align;
ptb = pTag;
sb = size;
align = 0;
TryAgain:
pTag = ptb;
size = sb;
#endif
while(size > 0) //While there's data left to be read
{
#ifdef TIDY
r = pTag->length;
if (align) r = (r + 3) & ~3;
#else
r = (pTag->size + 3) & ~3;
#endif
size -= 4;
switch(pTag->type)
{
case(XID6_TSTR):
if (pTag->size < 1 || pTag->size > 0x100) break;
switch(pTag->id)
{
case(XID6_SONG):
memcpy(song, pTag->data, size > r ? r : size);
song[pTag->size-1] = 0; //Force string to null terminate, incase tag is bad
break;
case(XID6_GAME):
memcpy(game, pTag->data, size > r ? r : size);
game[pTag->size-1] = 0;
break;
case(XID6_ARTIST):
memcpy(artist, pTag->data, size > r ? r : size);
artist[pTag->size-1] = 0;
break;
case(XID6_PUB):
memcpy(pub, pTag->data, size > r ? r : size);
pub[pTag->size-1] = 0;
break;
case(XID6_OST):
memcpy(ost, pTag->data, size > r ? r : size);
ost[pTag->size-1] = 0;
break;
case(XID6_DUMPER):
memcpy(dumper, pTag->data, size > r ? r : size);
dumper[pTag->size-1] = 0;
break;
case(XID6_CMNTS):
memcpy(comment, pTag->data, size > r ? r : size);
comment[pTag->size-1] = 0;
break;
#ifdef TIDY
default:
if (align && size == 4) goto Done;
#endif
}
break;
case(XID6_TINT):
if (pTag->size != 4) break;
switch(pTag->id)
{
case(XID6_DATE):
i = *pTag->data;
SetDate(i>>16, (i>>8) & 0xFF, i & 0xFF);
break;
case(XID6_INTRO):
intro = *pTag->data;
if (intro > XID6_MAXTICKS) intro = XID6_MAXTICKS;
break;
case(XID6_LOOP):
loop = *pTag->data;
if (loop > XID6_MAXTICKS) loop = XID6_MAXTICKS;
break;
case(XID6_END):
end = *pTag->data;
if (end > XID6_MAXTICKS) end = XID6_MAXTICKS;
break;
case(XID6_FADE):
fade = *pTag->data;
if (fade > XID6_TICKSMIN-1) fade = XID6_TICKSMIN-1;
break;
case(XID6_AMP):
amp = *pTag->data;
if (amp < 32768) amp = 32768;
if (amp > 524288) amp = 524288;
break;
#ifdef TIDY
default:
if (align && size == 4) goto Done;
#endif
}
break;
case(XID6_TSIZE):
switch(pTag->id)
{
case(XID6_EMU):
emu = (s8)pTag->size;
break;
case(XID6_DISC):
disc = (u8)pTag->size;
if (disc > 9) disc = 9;
break;
case(XID6_TRACK):
track = pTag->size;
if (((track>>8)-1) > 98) track = 0;
break;
case(XID6_COPY):
copy = pTag->size;
break;
case(XID6_MUTE):
mute = (u8)pTag->size;
break;
case(XID6_LOOPX):
loopx = pTag->size;
if (loopx < 1) loopx = 1;
if (loopx > 9) loopx = 9;
break;
case(XID6_AMP): //Old way of storing
amp = (u32)pTag->size << 12;
if (amp < 32768) amp = 32768;
if (amp > 524288) amp = 524288;
break;
#ifdef TIDY
default:
if (align && size == 4) goto Done;
#endif
}
break;
#ifdef TIDY
default:
if (align && size == 4) goto Done;
#endif
}
if (pTag->type != XID6_TSIZE)
{
pTag = (XID6Field*)((s32)pTag + r);
size -= r;
}
pTag++; //Skip sub-chunk header
}
Done:
if (end < -((s32)loop)) //If end is negative and |end| > loop
end = loop ? (end % (s32)loop) : 0;
#ifdef TIDY
if (size != 0)
{
if (!align)
{
align = 1;
goto TryAgain;
}
if (size == 4) printf("Bad tail? ");
else printf("**corrupt ");
}
#endif
return (size == 0);
}
//**************************************************************************************************
// Is Number in Text Form?
//
// Scans a string for characters other than '0'-'9', '\', and NULL
//
// In:
// str-> Character string to scan
// len = Length of string
//
// Out:
// -1, if string contains invalid characters
// length of string, otherwise
s32 ID666::IsText(s8* str, u32 length)
{
u32 c = 0;
while (c<length && ((str[c]>=0x30 && str[c]<=0x39) || str[c]=='/')) c++;
if (c==length || str[c]==0)
return c;
else
return -1;
}
//**************************************************************************************************
// Write XID6 Size
//
// Writes a 4-byte subchunk header, if 'data' is !0.
//
// In:
// pChk-> Buffer
// id = Subchunk ID
// data = 16-bit data to be written in the subchunk header
//
// Out:
// -> next subchunk position
XID6Field* ID666::WriteSize(XID6Field* pChk, u8 id, u16 data)
{
if (data != 0)
{
pChk->id = id;
pChk->type = XID6_TSIZE;
pChk->size = data;
pChk++;
}
return pChk;
}
//**************************************************************************************************
// Write XID6 Integer
//
// Writes a 4-byte subchunk, if data is !0.
//
// In:
// pChk-> Buffer
// id = Subchunk ID
// data = 32 bits of data to be written
//
// Out:
// -> next subchunk position
XID6Field* ID666::WriteInt(XID6Field* pChk, u8 id, u32 data)
{
if (data != 0)
{
pChk->id = id;
pChk->type = XID6_TINT;
pChk->size = 4;
((u32*)pChk)[1] = data;
pChk += 2;
}
return pChk;
}
//**************************************************************************************************
// Write XID6 String
//
// Writes a string subchunk. Strings must be <= 256 bytes including NULL. Empty strings will not
// be written.
//
// In:
// pChk-> Buffer
// id = Subchunk ID
// str -> String to write
//
// Out:
// -> next subchunk position
XID6Field* ID666::WriteStr(XID6Field* pChk, u8 id, const s8* str)
{
u32 i,j;
i = strlen(str);
if (i != 0)
{
j = (i + 4) >> 2;
pChk->id = id;
pChk->type = XID6_TSTR;
pChk->size = i + 1;
((u32*)pChk)[j] = 0; //Set last u32 to 0 to force NULL teminator
memcpy(&pChk[1], str, i); //Copy characters from string
pChk += j + 1;
}
return pChk;
}
/*
XID6Chk* ID666::WriteWStr(XID6Chk* pChk, u8 id, const s8* str)
{
u32 i,j;
i = wcslen(str);
if (i != 0)
{
i <<= 1;
j = (i + 4) >> 2;
pChk->id = id;
pChk->type = XID6_TWSTR;
pChk->size = i + 2;
((u32*)pChk)[j] = 0;
memcpy(&pChk[1], str, i);
pChk += j + 1;
}
return pChk;
}
*/
////////////////////////////////////////////////////////////////////////////////////////////////////
// Public Functions
//**************************************************************************************************
ID6Type ID666::LoadTag(const s8* fn, u32 size)
{
ID6Type type;
FILE* fh;
u32 i,n;
XID6Field* pTag;
SPCHdr spc;
if (!size)
type = IsSPC(fn, fh);
else
type = IsSPC(fn, size);
if (type > 0)
{
if (!size) strcpy(file, fn);
if (type==ID6_SPC || type==ID6_EXT)
{
bin = false;
if (!size)
{
fread(&spc, sizeof(SPCHdr), 1, fh);
GetID666(spc);
}
else
GetID666(*(SPCHdr*)fn);
ost[0] = 0;
pub[0] = 0;
copy = 0;
disc = 0;
track = 0;
amp = 0;
loop = 0;
end = 0;
loopx = 1;
mute = 0;
if (type == ID6_EXT)
{
if (!size)
{
fseek(fh, 0x10204, SEEK_SET);
fread(&i, 1, 4, fh);
//Truncate header size, if it's corrupt
fseek(fh, 0, SEEK_END);
n = ftell(fh) - 0x10208;
if (i > n) i = n;
//Load xid6 chunk into memory
pTag = (XID6Field*)malloc((i + 3) & ~3);
fseek(fh, 0x10208, SEEK_SET);
fread(pTag, i, 1, fh);
GetXID6(pTag, i);
free(pTag);
}
else
{
i = *(u32*)&fn[0x10204];
if (i > (size - 0x10208)) i = size - 0x10208;
GetXID6((XID6Field*)&fn[0x10208], i);
}
}
}
else
{
song[0] = 0;
game[0] = 0;
artist[0] = 0;
dumper[0] = 0;
comment[0] = 0;
ost[0] = 0;
pub[0] = 0;
datetxt[0] = 0;
date.date = 0;
copy = 0;
track = 0;
disc = 0;
amp = 0;
mute = 0;
emu = 0;
intro = defSong;
loop = 0;
loopx = 1;
end = 0;
fade = defFade;
#if ID666_ROM
if (type>=ID6_ROM && type<=ID6_SF3)
{
game[21] = 0;
memcpy(game, romID.name, 21);
strcpy(pub, romMaker[romID.maker]);
}
#endif
}
if (!size) fclose(fh);
}
return type;
}
//**************************************************************************************************
#if 0
static b8 Search(u8 type)
{
for (int i=0; i<sizeof(IDList); i++)
if (type == IDList[i]) return 1;
return 0;
}
#endif
b8 ID666::SaveTag(b8 bin, b8 ext)
{
u32* pBuf;
XID6Field* p;
FILE* fh;
u32 size,xsize,i,j;
// u32 s;
// b8 u;
u32 xbuf[2048];
//Load SPC ---------------------------------
fh = fopen(file, "rb");
if (!fh) return 0;
fseek(fh, 0, SEEK_END);
size = ftell(fh);
fseek(fh, 0, SEEK_SET);
pBuf = (u32*)malloc(size);
fread(pBuf, size, 1, fh);
fclose(fh);
//Write ID666 tag --------------------------
ToSPC(*(SPCHdr*)pBuf, bin); //Create SPC header
//Write SPC back out -----------------------
fh = fopen(file, "wb");
if (!fh) return 0;
fwrite(pBuf, 0x10200, 1, fh);
//Write extended tag -----------------------
if (ext)
{
p = (XID6Field*)&xbuf[2];
if (strlen(song) > 32) p = WriteStr(p, XID6_SONG, song);
if (strlen(game) > 32) p = WriteStr(p, XID6_GAME, game);
if (strlen(artist) > 32) p = WriteStr(p, XID6_ARTIST, artist);
if (strlen(dumper) > 16) p = WriteStr(p, XID6_DUMPER, dumper);
if (strlen(comment) > 32 ||
strchr(comment, '\n')) p = WriteStr(p, XID6_CMNTS, comment);
//*** Date and emulator will always be written in the original tag ***
// p = WriteXChk(p, XID6_EMU, id6.emu);
// id6.date.GetDate(y,m,d);
// p = WriteInt(p, XID6_DATE, (y<<16) | ((m&0xFF)<<8) | (d&0xFF));
if (ost) p = WriteStr(p, XID6_OST, ost);
p = WriteSize(p, XID6_DISC, disc);
p = WriteSize(p, XID6_TRACK, track);
p = WriteSize(p, XID6_COPY, copy);
p = WriteStr(p, XID6_PUB, pub);
p = WriteSize(p, XID6_MUTE, mute);
p = WriteInt(p, XID6_AMP, amp);
if (end < (s32)(0 - loop)) //If 'end' is negative, it can't be more than loop
end = loop ? (end % (s32)loop) : 0;
p = WriteInt(p, XID6_INTRO, intro);
p = WriteInt(p, XID6_LOOP, loop);
p = WriteInt(p, XID6_END, end);
p = WriteInt(p, XID6_FADE, fade);
if (loopx > 1)
p = WriteSize(p, XID6_LOOPX, loopx);
xsize = (u32)p - (u32)xbuf - 8;
if (xsize)
{
xbuf[0] = *(u32*)xid6; //Chunk ID
xbuf[1] = xsize; //Chunk size
fwrite(xbuf, 1, xsize + 8, fh);
}
}
//Write out any extra data -----------------
//For forward compatibility, any data at the end of the file, in addition to an xid6 chunk, is
//copied. If the file contained an xid6 chunk, the chunk is scanned for unknown fields (fields
//that may be added in the future) and those are copied as well.
if (size > 0x10200) //Was file larger than regular SPC size?
{
i = 0x10200;
//First check if the file had an xid6 chunk
if (size >= 0x10208 &&
pBuf[0x10200 >> 2] == *(u32*)xid6)
{
j = pBuf[0x10204 >> 2];
//If the size of the xid6 chunk is invalid, we can't assume anything.
if (!(j & 3) && j <= (size - 0x10208))
{
i += j + 8; //Skip past the xid6 chunk
#if 0
//This code copies any unknown ID666 fields to make sure future fields will remain
// intact, even in if the editor doesn't support them yet. However, I haven't
// gotten around to testing this code, and I don't see the xid6 chunk changing any
// time in the near future.
if (ext) //If the user wanted to save the xid6 chunk, search
{ // for and copy potentially unknown (future) fields.
p = (XID6Field*)&pBuf[0x10208 >> 2];
j = 0x10208;
u = 0;
while (j < size)
{
s = (p->size + 3) & ~3;
if (Search(p->id))
{
if (p->type)
{
p += s >> 2;
j += s;
}
p++;
j += 4;
}
else
{
if (p->type)
{
j += 4 + s;
if (j <= size)
{
fwrite(p, 1, 4 + s, fh);
xsize += 4 + s;
u = 1;
}
p += 1 + (s >> 2);
}
else
{
fwrite(p, 1, 4, fh);
xsize += 4;
j += 4;
p++;
u = 1;
}
}
}
if (u)
{
j = ftell(fh);
fseek(fh, 0x10204, SEEK_SET);
fwrite(&xsize, 4, 1, fh);
fseek(fh, j, SEEK_SET);
}
}
#endif
}
else
i = size; //xid6 chunk was invalid, ingnore any trailing data
}
//If any extra data remains, write it out
if (i < size) fwrite(&pBuf[i >> 2], 1, size-i, fh);
}
fclose(fh);
free(pBuf);
return 1;
}
//**************************************************************************************************
ID666* ID666::operator=(const ID666& id6)
{
strcpy(file, id6.file);
bin = id6.bin;
strcpy(song, id6.song);
strcpy(game, id6.game);
strcpy(artist, id6.artist);
strcpy(dumper, id6.dumper);
strcpy(datetxt, id6.datetxt);
date = id6.date;
emu = id6.emu;
strcpy(comment, id6.comment);
strcpy(ost,id6.ost);
strcpy(pub, id6.pub);
copy = id6.copy;
disc = id6.disc;
track = id6.track;
mute = id6.mute;
amp = id6.amp;
intro = id6.intro;
loop = id6.loop;
end = id6.end;
fade = id6.fade;
loopx = id6.loopx;
return this;
}
//**************************************************************************************************
u32 ID666::GetSong()
{
u32 time = intro + (loop * loopx) + end;
return time ? time : defSong;
}
//**************************************************************************************************
u32 ID666::GetFade()
{
return (intro | loop | end) ? fade : defFade;
}
//**************************************************************************************************
u32 ID666::GetTotal()
{
u32 time = intro + (loop * loopx) + end + fade;
return time ? time : defSong+defFade;
}
//**************************************************************************************************
b8 ID666::SetDate(u32 year, u8 month, u8 day)
{
//Validate fields --------------------------
if (year < 100) //Add century, if not included
{
year += 1900;
if (year < 1998) year += 100;
}
if (year < 1998 || year > 9999) year = 0; //Invaild year
if (month < 1 || month > 12) year = 0; //Invalid month
if (day < 1 || day > 31) year = 0; //Invalid day
if (year == 1998) //SPC's didn't exist before 15 Apr 1998
if ((month==4 && day<15) || month<4) year = 0;
//Set date ---------------------------------
if (year)
{
date.year = (s16)year;
date.month = (s8)month;
date.day = (s8)day;
datetxt[0] = 0;
return true;
}
else
return false;
}
//**************************************************************************************************
// Create SPC Header from ID666
//
// Reduces the attributes of ID666 into a writeable form for the SPC header
//
// Notes:
// Song and fade length are taken from songMin, songSec, and fadeSec (see FixTime).
// No range checking is performed on any numeric values.
//
// In:
// spc -> SPC header containing ID666 tag
// bin = Create a binary tag
//
// Out:
// nothing
void ID666::ToSPC(SPCHdr &spc, b8 bin)
{
s8* cr;
u32 i;
strcpy(spc.fTag, SPCFileID);
memcpy(spc.tTerm, SPCTerm,4);
memset(spc.song, 0, 0xa5);
if (bin)
{
i = strlen(artist);
if (i > 32) i = 32;
memcpy(spc.artist-1, artist, i);
*(u32*)(&spc.songLen[0]) = intro / XID6_TICKSSEC;
*(u32*)(&spc.fadeLen[0]) = fade >> 6;
if (date.date)
{
*(u32*)&spc.date = date.date;
}
spc.chnDis = emu;
spc.artist[31] = 0;
}
else
{
if (date.date)
{
sprintf(spc.date, "%i/%i/%i", date.month, date.day, date.year);
}
else
strcpy(spc.date, datetxt);
if (HasTime())
{
sprintf(spc.songLen, "%i", intro / XID6_TICKSSEC);
sprintf(spc.fadeLen, "%i", fade >> 6);
}
i = strlen(artist);
if (i > 32) i = 32;
memcpy(spc.artist, artist, i);
spc.emulator = emu + 0x30;
spc.chnDis = 0;
}
i = strlen(song);