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/*
* Adplug - Replayer for many OPL2/OPL3 audio file formats.
* Copyright (C) 1999 - 2003 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
*
* [xad] PSI player, by Riven the Mage <riven@ok.ru>
*/
/*
- discovery -
file(s) : 4BIDDEN.COM, PGRID.EXE
type : Forbidden Dreams BBStro
Power Grid BBStro
tune : by Friar Tuck [Shadow Faction/ICE]
player : by Psi [Future Crew]
comment : seems to me what 4bidden tune & player was ripped from pgrid
file(s) : MYSTRUNE.COM
type : Mystical Runes BBStro
tune : by ?
player : by Psi [Future Crew]
*/
#include "psi.h"
#include "debug.h"
const unsigned char CxadpsiPlayer::psi_adlib_registers[99] =
{
0x20, 0x23, 0x40, 0x43, 0x60, 0x63, 0x80, 0x83, 0xE0, 0xE3, 0xC0,
0x21, 0x24, 0x41, 0x44, 0x61, 0x64, 0x81, 0x84, 0xE1, 0xE4, 0xC1,
0x22, 0x25, 0x42, 0x45, 0x62, 0x65, 0x82, 0x85, 0xE2, 0xE5, 0xC2,
0x28, 0x2B, 0x48, 0x4B, 0x68, 0x6B, 0x88, 0x8B, 0xE8, 0xEB, 0xC3,
0x29, 0x2C, 0x49, 0x4C, 0x69, 0x6C, 0x89, 0x8C, 0xE9, 0xEC, 0xC4,
0x2A, 0x2D, 0x4A, 0x4D, 0x6A, 0x6D, 0x8A, 0x8D, 0xEA, 0xED, 0xC5,
0x30, 0x33, 0x50, 0x53, 0x70, 0x73, 0x90, 0x93, 0xF0, 0xF3, 0xC6,
0x31, 0x34, 0x51, 0x54, 0x71, 0x74, 0x91, 0x94, 0xF1, 0xF4, 0xC7,
0x32, 0x35, 0x52, 0x55, 0x72, 0x75, 0x92, 0x95, 0xF2, 0xF5, 0xC8
};
const unsigned short CxadpsiPlayer::psi_notes[16] =
{
0x216B, 0x2181, 0x2198, 0x21B0, 0x21CA, 0x21E5, 0x2202, 0x2220,
0x2241, 0x2263, 0x2287, 0x2364,
0x0000, 0x0000, 0x0000, 0x0000 // by riven
};
CPlayer *CxadpsiPlayer::factory(Copl *newopl)
{
return new CxadpsiPlayer(newopl);
}
void CxadpsiPlayer::xadplayer_rewind(int subsong)
{
opl_write(0x01, 0x20);
opl_write(0x08, 0x00);
opl_write(0xBD, 0x00);
// get header
header.instr_ptr = (tune[1] << 8) + tune[0];
header.seq_ptr = (tune[3] << 8) + tune[2];
// define instruments
psi.instr_table = &tune[header.instr_ptr];
for(int i=0; i<8; i++)
{
for(int j=0; j<11; j++) {
unsigned short inspos = (psi.instr_table[i * 2 + 1] << 8) + psi.instr_table[i * 2];
opl_write(psi_adlib_registers[i*11 + j],tune[inspos + j]);
}
opl_write(0xA0+i, 0x00);
opl_write(0xB0+i, 0x00);
psi.note_delay[i] = 1;
psi.note_curdelay[i] = 1;
psi.looping[i] = 0;
}
// calculate sequence pointer
psi.seq_table = &tune[header.seq_ptr];
}
void CxadpsiPlayer::xadplayer_update()
{
unsigned short ptr;
for(int i=0; i<8; i++)
{
ptr = (psi.seq_table[(i<<1) * 2 + 1] << 8) + psi.seq_table[(i<<1) * 2];
psi.note_curdelay[i]--;
if (!psi.note_curdelay[i])
{
opl_write(0xA0+i, 0x00);
opl_write(0xB0+i, 0x00);
unsigned char event = tune[ptr++];
#ifdef DEBUG
AdPlug_LogWrite("channel %02X, event %02X:\n",i+1,event);
#endif
// end of sequence ?
if (!event)
{
ptr = (psi.seq_table[(i<<1) * 2 + 3] << 8) + psi.seq_table[(i<<1) * 2 + 2];
event = tune[ptr++];
#ifdef DEBUG
AdPlug_LogWrite(" channel %02X, event %02X:\n",i+1,event);
#endif
// set sequence loop flag
psi.looping[i] = 1;
// module loop ?
plr.looping = 1;
for(int j=0; j<8; j++)
plr.looping &= psi.looping[j];
}
// new note delay ?
if (event & 0x80)
{
psi.note_delay[i] = (event & 0x7F);
event = tune[ptr++];
#ifdef DEBUG
AdPlug_LogWrite(" channel %02X, event %02X:\n",i+1,event);
#endif
}
psi.note_curdelay[i] = psi.note_delay[i];
// play note
unsigned short note = psi_notes[event & 0x0F];
opl_write(0xA0+i, note & 0xFF);
opl_write(0xB0+i, (note >> 8) + ((event >> 2) & 0xFC));
// save position
psi.seq_table[(i<<1) * 2] = ptr & 0xff;
psi.seq_table[(i<<1) * 2 + 1] = ptr >> 8;
}
}
}
float CxadpsiPlayer::xadplayer_getrefresh()
{
return 70.0f;
}
const char * CxadpsiPlayer::xadplayer_gettype()
{
return "xad: psi player";
}
unsigned int CxadpsiPlayer::xadplayer_getinstruments()
{
return 8;
}
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