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/*
* Adplug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (C) 1999 - 2008 Simon Peter, <dn.tlp@gmx.net>, et al.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser 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
*
* sa2.cpp - SAdT2 Loader by Simon Peter <dn.tlp@gmx.net>
* SAdT Loader by Mamiya <mamiya@users.sourceforge.net>
*/
#include <cstring>
#include <stdio.h>
#include <string.h>
#include "sa2.h"
#include "debug.h"
CPlayer *Csa2Loader::factory(Copl *newopl)
{
return new Csa2Loader(newopl);
}
bool Csa2Loader::load(const std::string &filename, const CFileProvider &fp)
{
binistream *f = fp.open(filename); if(!f) return false;
struct {
unsigned char data[11],arpstart,arpspeed,arppos,arpspdcnt;
} insts;
unsigned char buf;
int i,j, k, notedis = 0;
const unsigned char convfx[16] = {0,1,2,3,4,5,6,255,8,255,10,11,12,13,255,15};
unsigned char sat_type;
enum SAT_TYPE {
HAS_ARPEGIOLIST = (1 << 7),
HAS_V7PATTERNS = (1 << 6),
HAS_ACTIVECHANNELS = (1 << 5),
HAS_TRACKORDER = (1 << 4),
HAS_ARPEGIO = (1 << 3),
HAS_OLDBPM = (1 << 2),
HAS_OLDPATTERNS = (1 << 1),
HAS_UNKNOWN127 = (1 << 0)
};
// read header
f->readString(header.sadt, 4);
header.version = f->readInt(1);
// file validation section
if(strncmp(header.sadt,"SAdT",4)) { fp.close(f); return false; }
switch(header.version) {
case 1:
notedis = +0x18;
sat_type = HAS_UNKNOWN127 | HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 2:
notedis = +0x18;
sat_type = HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 3:
notedis = +0x0c;
sat_type = HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 4:
notedis = +0x0c;
sat_type = HAS_ARPEGIO | HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 5:
notedis = +0x0c;
sat_type = HAS_ARPEGIO | HAS_ARPEGIOLIST | HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 6:
sat_type = HAS_ARPEGIO | HAS_ARPEGIOLIST | HAS_OLDPATTERNS | HAS_OLDBPM;
break;
case 7:
sat_type = HAS_ARPEGIO | HAS_ARPEGIOLIST | HAS_V7PATTERNS;
break;
case 8:
sat_type = HAS_ARPEGIO | HAS_ARPEGIOLIST | HAS_TRACKORDER;
break;
case 9:
sat_type = HAS_ARPEGIO | HAS_ARPEGIOLIST | HAS_TRACKORDER | HAS_ACTIVECHANNELS;
break;
default: /* unknown */
fp.close(f);
return false;
}
// load section
// instruments
for(i = 0; i < 31; i++) {
if(sat_type & HAS_ARPEGIO) {
for(j = 0; j < 11; j++) insts.data[j] = f->readInt(1);
insts.arpstart = f->readInt(1);
insts.arpspeed = f->readInt(1);
insts.arppos = f->readInt(1);
insts.arpspdcnt = f->readInt(1);
inst[i].arpstart = insts.arpstart;
inst[i].arpspeed = insts.arpspeed;
inst[i].arppos = insts.arppos;
inst[i].arpspdcnt = insts.arpspdcnt;
} else {
for(j = 0; j < 11; j++) insts.data[j] = f->readInt(1);
inst[i].arpstart = 0;
inst[i].arpspeed = 0;
inst[i].arppos = 0;
inst[i].arpspdcnt = 0;
}
for(j=0;j<11;j++)
inst[i].data[j] = insts.data[j];
inst[i].misc = 0;
inst[i].slide = 0;
}
// instrument names
for(i = 0; i < 29; i++) f->readString(instname[i], 17);
f->ignore(3); // dummy bytes
for(i = 0; i < 128; i++) order[i] = f->readInt(1); // pattern orders
if(sat_type & HAS_UNKNOWN127) f->ignore(127);
// infos
nop = f->readInt(2); length = f->readInt(1); restartpos = f->readInt(1);
// bpm
bpm = f->readInt(2);
if(sat_type & HAS_OLDBPM) {
bpm = bpm * 125 / 50; // cps -> bpm
}
if(sat_type & HAS_ARPEGIOLIST) {
init_specialarp();
for(i = 0; i < 256; i++) arplist[i] = f->readInt(1); // arpeggio list
for(i = 0; i < 256; i++) arpcmd[i] = f->readInt(1); // arpeggio commands
}
for(i=0;i<64;i++) { // track orders
for(j=0;j<9;j++) {
if(sat_type & HAS_TRACKORDER)
trackord[i][j] = f->readInt(1);
else
{
trackord[i][j] = i * 9 + j;
}
}
}
if(sat_type & HAS_ACTIVECHANNELS)
activechan = f->readInt(2) << 16; // active channels
AdPlug_LogWrite("Csa2Loader::load(\"%s\"): sat_type = %x, nop = %d, "
"length = %d, restartpos = %d, activechan = %x, bpm = %d\n",
filename.c_str(), sat_type, nop, length, restartpos, activechan, bpm);
// track data
if(sat_type & HAS_OLDPATTERNS) {
i = 0;
while(!f->ateof()) {
for(j=0;j<64;j++) {
for(k=0;k<9;k++) {
buf = f->readInt(1);
tracks[i+k][j].note = buf ? (buf + notedis) : 0;
tracks[i+k][j].inst = f->readInt(1);
tracks[i+k][j].command = convfx[f->readInt(1) & 0xf];
tracks[i+k][j].param1 = f->readInt(1);
tracks[i+k][j].param2 = f->readInt(1);
}
}
i+=9;
}
} else
if(sat_type & HAS_V7PATTERNS) {
i = 0;
while(!f->ateof()) {
for(j=0;j<64;j++) {
for(k=0;k<9;k++) {
buf = f->readInt(1);
tracks[i+k][j].note = buf >> 1;
tracks[i+k][j].inst = (buf & 1) << 4;
buf = f->readInt(1);
tracks[i+k][j].inst += buf >> 4;
tracks[i+k][j].command = convfx[buf & 0x0f];
buf = f->readInt(1);
tracks[i+k][j].param1 = buf >> 4;
tracks[i+k][j].param2 = buf & 0x0f;
}
}
i+=9;
}
} else {
i = 0;
while(!f->ateof()) {
for(j=0;j<64;j++) {
buf = f->readInt(1);
tracks[i][j].note = buf >> 1;
tracks[i][j].inst = (buf & 1) << 4;
buf = f->readInt(1);
tracks[i][j].inst += buf >> 4;
tracks[i][j].command = convfx[buf & 0x0f];
buf = f->readInt(1);
tracks[i][j].param1 = buf >> 4;
tracks[i][j].param2 = buf & 0x0f;
}
i++;
}
}
fp.close(f);
// fix instrument names
for(i=0;i<29;i++)
for(j=0;j<17;j++)
if(!instname[i][j])
instname[i][j] = ' ';
rewind(0); // rewind module
return true;
}
std::string Csa2Loader::gettype()
{
char tmpstr[40];
sprintf(tmpstr,"Surprise! Adlib Tracker 2 (version %d)",header.version);
return std::string(tmpstr);
}
std::string Csa2Loader::gettitle()
{
char bufinst[29*17],buf[18];
int i,ptr;
// parse instrument names for song name
memset(bufinst,'\0',29*17);
for(i=0;i<29;i++) {
buf[16] = ' '; buf[17] = '\0';
memcpy(buf,instname[i]+1,16);
for(ptr=16;ptr>0;ptr--)
if(buf[ptr] == ' ')
buf[ptr] = '\0';
else {
if(ptr<16)
buf[ptr+1] = ' ';
break;
}
strcat(bufinst,buf);
}
if(strchr(bufinst,'"'))
return std::string(bufinst,strchr(bufinst,'"')-bufinst+1,strrchr(bufinst,'"')-strchr(bufinst,'"')-1);
else
return std::string();
}
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