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/*
* This program is free software; you can redistribute it and modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation; either version 2 of the license or (at your
* option) any later version.
*
* Authors: Olivier Lapicque <olivierl@jps.net>,
* Adam Goode <adam@evdebs.org> (endian and char fixes for PPC)
*/
////////////////////////////////////////////////////////////
// 669 Composer / UNIS 669 module loader
////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "sndfile.h"
//#pragma warning(disable:4244)
typedef struct tagFILEHEADER669
{
WORD sig; // 'if' or 'JN'
signed char songmessage[108]; // Song Message
BYTE samples; // number of samples (1-64)
BYTE patterns; // number of patterns (1-128)
BYTE restartpos;
BYTE orders[128];
BYTE tempolist[128];
BYTE breaks[128];
} Q_PACKED FILEHEADER669;
typedef struct tagSAMPLE669
{
BYTE filename[13];
BYTE length[4]; // when will somebody think about DWORD align ???
BYTE loopstart[4];
BYTE loopend[4];
} Q_PACKED SAMPLE669;
BOOL CSoundFile::Read669(const BYTE *lpStream, DWORD dwMemLength)
//---------------------------------------------------------------
{
BOOL b669Ext;
const FILEHEADER669 *pfh = (const FILEHEADER669 *)lpStream;
const SAMPLE669 *psmp = (const SAMPLE669 *)(lpStream + 0x1F1);
DWORD dwMemPos = 0;
if ((!lpStream) || (dwMemLength < sizeof(FILEHEADER669))) return FALSE;
if ((bswapLE16(pfh->sig) != 0x6669) && (bswapLE16(pfh->sig) != 0x4E4A)) return FALSE;
b669Ext = (bswapLE16(pfh->sig) == 0x4E4A) ? TRUE : FALSE;
if ((!pfh->samples) || (pfh->samples > 64) || (pfh->restartpos >= 128)
|| (!pfh->patterns) || (pfh->patterns > 128)) return FALSE;
DWORD dontfuckwithme = 0x1F1 + pfh->samples * sizeof(SAMPLE669) + pfh->patterns * 0x600;
if (dontfuckwithme > dwMemLength) return FALSE;
for (UINT ichk=0; ichk<pfh->samples; ichk++)
{
DWORD len = bswapLE32(*((DWORD *)(&psmp[ichk].length)));
dontfuckwithme += len;
}
if (dontfuckwithme > dwMemLength) return FALSE;
// That should be enough checking: this must be a 669 module.
m_nType = MOD_TYPE_669;
m_dwSongFlags |= SONG_LINEARSLIDES;
m_nMinPeriod = 28 << 2;
m_nMaxPeriod = 1712 << 3;
m_nDefaultTempo = 125;
m_nDefaultSpeed = 6;
m_nChannels = 8;
memcpy(m_szNames[0], pfh->songmessage, 16);
m_nSamples = pfh->samples;
for (UINT nins=1; nins<=m_nSamples; nins++, psmp++)
{
DWORD len = bswapLE32(*((DWORD *)(&psmp->length)));
DWORD loopstart = bswapLE32(*((DWORD *)(&psmp->loopstart)));
DWORD loopend = bswapLE32(*((DWORD *)(&psmp->loopend)));
if (len > MAX_SAMPLE_LENGTH) len = MAX_SAMPLE_LENGTH;
if ((loopend > len) && (!loopstart)) loopend = 0;
if (loopend > len) loopend = len;
if (loopstart + 4 >= loopend) loopstart = loopend = 0;
Ins[nins].nLength = len;
Ins[nins].nLoopStart = loopstart;
Ins[nins].nLoopEnd = loopend;
if (loopend) Ins[nins].uFlags |= CHN_LOOP;
memcpy(m_szNames[nins], psmp->filename, 13);
Ins[nins].nVolume = 256;
Ins[nins].nGlobalVol = 64;
Ins[nins].nPan = 128;
}
// Song Message
m_lpszSongComments = new char[109];
memcpy(m_lpszSongComments, pfh->songmessage, 108);
m_lpszSongComments[108] = 0;
// Reading Orders
memcpy(Order, pfh->orders, 128);
m_nRestartPos = pfh->restartpos;
if (Order[m_nRestartPos] >= pfh->patterns) m_nRestartPos = 0;
// Reading Pattern Break Locations
for (UINT npan=0; npan<8; npan++)
{
ChnSettings[npan].nPan = (npan & 1) ? 0x30 : 0xD0;
ChnSettings[npan].nVolume = 64;
}
// Reading Patterns
dwMemPos = 0x1F1 + pfh->samples * 25;
for (UINT npat=0; npat<pfh->patterns; npat++)
{
Patterns[npat] = AllocatePattern(64, m_nChannels);
if (!Patterns[npat]) break;
PatternSize[npat] = 64;
MODCOMMAND *m = Patterns[npat];
const BYTE *p = lpStream + dwMemPos;
for (UINT row=0; row<64; row++)
{
MODCOMMAND *mspeed = m;
if ((row == pfh->breaks[npat]) && (row != 63))
{
for (UINT i=0; i<8; i++)
{
m[i].command = CMD_PATTERNBREAK;
m[i].param = 0;
}
}
for (UINT n=0; n<8; n++, m++, p+=3)
{
UINT note = p[0] >> 2;
UINT instr = ((p[0] & 0x03) << 4) | (p[1] >> 4);
UINT vol = p[1] & 0x0F;
if (p[0] < 0xFE)
{
m->note = note + 37;
m->instr = instr + 1;
}
if (p[0] <= 0xFE)
{
m->volcmd = VOLCMD_VOLUME;
m->vol = (vol << 2) + 2;
}
if (p[2] != 0xFF)
{
UINT command = p[2] >> 4;
UINT param = p[2] & 0x0F;
switch(command)
{
case 0x00: command = CMD_PORTAMENTOUP; break;
case 0x01: command = CMD_PORTAMENTODOWN; break;
case 0x02: command = CMD_TONEPORTAMENTO; break;
case 0x03: command = CMD_MODCMDEX; param |= 0x50; break;
case 0x04: command = CMD_VIBRATO; param |= 0x40; break;
case 0x05: if (param) command = CMD_SPEED; else command = 0; param += 2; break;
case 0x06: if (param == 0) { command = CMD_PANNINGSLIDE; param = 0xFE; } else
if (param == 1) { command = CMD_PANNINGSLIDE; param = 0xEF; } else
command = 0;
break;
default: command = 0;
}
if (command)
{
if (command == CMD_SPEED) mspeed = NULL;
m->command = command;
m->param = param;
}
}
}
if ((!row) && (mspeed))
{
for (UINT i=0; i<8; i++) if (!mspeed[i].command)
{
mspeed[i].command = CMD_SPEED;
mspeed[i].param = pfh->tempolist[npat] + 2;
break;
}
}
}
dwMemPos += 0x600;
}
// Reading Samples
for (UINT n=1; n<=m_nSamples; n++)
{
UINT len = Ins[n].nLength;
if (dwMemPos >= dwMemLength) break;
if (len > 4) ReadSample(&Ins[n], RS_PCM8U, (LPSTR)(lpStream+dwMemPos), dwMemLength - dwMemPos);
dwMemPos += len;
}
return TRUE;
}
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