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scdvgmconvert
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scdvgmconvert
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#!/usr/bin/perl
###############################################################################
# Copyright (c) 2016 by bgvanbur
#
# This program is free software; you can redistribute it and/or 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.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
###############################################################################
# TODO DMF format notes
# DT is not based on value but that 3 is no detune
# C-2 in gui stores in dfm as 1 644 but in vgm as octave 2 644
use strict;
use warnings;
use Encode qw(from_to);
use Compress::Zlib ;
use POSIX;
# things specific to the tmnt hyperstone heist
my $tmnthh = 1;
my $debug = 0;
my $dmfCompress = 1;
my $fmChannelMask = 0x7F;
my $psgChannelMask = 0x07;
my $dmfClock = 60;
my @files;
my $dmfSpeed = 3;
foreach my $arg (@ARGV) {
# TODO replace with first option
if ( $arg =~ m/^-debug$/i ) {
$debug = 1;
} elsif ( $arg =~ m/^-dmfspeed=(\d+)$/i ) {
$dmfSpeed = $1;
} elsif ( $arg =~ /^-fmchmask=([01]{6})$/i ) {
my $bin = $1;
$fmChannelMask = oct("0b".$bin);
} elsif ( $arg =~ /^-psgchmask=([01]{3})$/i ) {
my $bin = $1;
$psgChannelMask = oct("0b".$bin);
} elsif ( $arg =~ /^-pal$/i ) {
$dmfClock = 50;
} elsif ( -e $arg ) {
push @files, $arg;
} else {
print "Bad argument: $arg\n";
&Help();
}
}
foreach my $vgmFile (@files) {
my $rc = &ProcessVGM($vgmFile);
}
sub ProcessVGM {
my ($vgmFile) = @_;
my $vgmData = '';
if ( ! open( VGM, '<'.$vgmFile ) ) {
print STDERR "Could not open VGM: $vgmFile\n";
return 0;
}
my $vgmLength = -s $vgmFile;
binmode VGM;
if ( read(VGM,$vgmData,$vgmLength) != $vgmLength ) {
print STDERR "Problem reading VGM: $vgmFile\n";
return 0;
}
close VGM;
# check if has vgm identifier, if not try gunzipping it and if that
# has the vgm identifier than copy that over the vgm data
# NOTE: this uses gzip format and not raw zlib data
my $vgmIdentifer = substr($vgmData,0x00,4);
if ( $vgmIdentifer ne 'Vgm ' ) {
my $vgmData2 = Compress::Zlib::memGunzip($vgmData);
my $vgmLength2 = length($vgmData2);
if ( $vgmLength2 >= 4 ) {
my $vgmIdentifer2 = substr($vgmData2,0x00,4);
if ( $vgmIdentifer2 eq 'Vgm ' ) {
$vgmData = $vgmData2;
$vgmLength = $vgmLength2;
}
}
}
my $vgmOffset = 0;
my $vgmTrack = 0;
do {
my $vgmDetail = $vgmFile;
if ( $vgmTrack ) {
$vgmDetail .= ':' . $vgmTrack;
}
if ( $vgmLength < 0x24 ) {
print STDERR "File too small to be a valid VGM: $vgmDetail\n";
return 0;
}
my $vgmIdentifer = substr($vgmData,0x00,4);
if ( $vgmIdentifer ne 'Vgm ' ) {
print STDERR "Invalid identifier for VGM: $vgmDetail\n";
return 0;
}
# VGM uses little endian
my $EofOffset = unpack("V",substr($vgmData,0x04,4));
my $vgmTrackLength = $EofOffset + 4;
if ( $vgmLength < $vgmTrackLength ) {
print STDERR "File too small based on Eof offset: $vgmDetail\n";
return 0;
}
my $vgmTrack = substr($vgmData,0,$vgmTrackLength);
my $rc = &ProcessVGMTrack($vgmDetail,$vgmTrack,$vgmTrackLength);
# TODO
if ( $rc == 0 ) {
die "Debug\n";
}
$vgmData = substr($vgmData,$vgmTrackLength);
$vgmLength -= $vgmTrackLength;
} while ($vgmLength > 0);
return 1;
}
sub ProcessVGMTrack {
my ($vgmDetail,$vgmTrack,$vgmTrackLength) = @_;
# TODO sample rate 44100
# version 1.00+
my $VersionNumber = unpack("V",substr($vgmTrack,0x08,4));
my $SN76489Clock = unpack("V",substr($vgmTrack,0x0C,4));
my $YM2413Clock = unpack("V",substr($vgmTrack,0x10,4));
my $GD3Offset = unpack("V",substr($vgmTrack,0x14,4));
my $GD3Location = $GD3Offset ? 0x14 + $GD3Offset : 0;
my $TotalNumberSamples = unpack("V",substr($vgmTrack,0x18,4));
my $LoopOffset = unpack("V",substr($vgmTrack,0x1C,4));
my $LoopLocation = $LoopOffset ? $LoopOffset + 0x1C : $vgmTrackLength;
my $LoopNumberSamples = unpack("V",substr($vgmTrack,0x20,4));
# version 1.01+
my $Rate = 0;
if ( $VersionNumber >= 0x00000101 ) {
$Rate = unpack("V",substr($vgmTrack,0x24,4));
}
# version 1.10+
my $SN76489Feedback = 0x0009;
my $SN76489ShiftRegister = 16;
if ( $VersionNumber >= 0x00000110 ) {
$SN76489Feedback = unpack("v",substr($vgmTrack,0x28,2));
$SN76489ShiftRegister = ord(substr($vgmTrack,0x2A,1));
}
# version 1.51+
my $SN76489Flags = 0;
if ( $VersionNumber >= 0x00000151 ) {
$SN76489Flags = ord(substr($vgmTrack,0x2B,1));
}
# version 1.10+
my $YM2612Clock = $YM2413Clock;
my $YM2151Clock = $YM2413Clock;
if ( $VersionNumber >= 0x00000110 ) {
$YM2612Clock = unpack("V",substr($vgmTrack,0x2C,4));
$YM2151Clock = unpack("V",substr($vgmTrack,0x30,4));
}
# version 1.50+
my $vgmDataOffset = 0x0000000C;
if ( $VersionNumber >= 0x00000150 ) {
$vgmDataOffset = unpack("V",substr($vgmTrack,0x34,4));
}
# version 1.51+
# TODO bytes 0x38...
my $vgmTrackCurrentOffset = 0x34 + $vgmDataOffset;
my $dataBlock = '';
my $dataBlockSize = 0;
my $dataBlockOffset = 0;
my @dataBlocks;
my $samples = 0;
my $samplesLoop = 0;
# TODO assumes VGM data before GD3 data
my $command = 0x00;
my @channels;
for ( my $channel = 0; $channel < 6; $channel++ ) {
$channels[$channel][0]{'effects'} = 1;
# FM channels
$channels[$channel][0]{'alg'} = 0;
$channels[$channel][0]{'fb'} = 0;
$channels[$channel][0]{'fms'} = 0;
$channels[$channel][0]{'ams'} = 0;
for ( my $operator = 0; $operator < 4; $operator++ ) {
$channels[$channel][$operator]{'am'} = 0;
$channels[$channel][$operator]{'ar'} = 0;
$channels[$channel][$operator]{'dr'} = 0;
$channels[$channel][$operator]{'mult'} = 0;
$channels[$channel][$operator]{'rr'} = 0;
$channels[$channel][$operator]{'sl'} = 0;
$channels[$channel][$operator]{'tl'} = 0;
$channels[$channel][$operator]{'dt2'} = 0;
$channels[$channel][$operator]{'rs'} = 0;
$channels[$channel][$operator]{'dt'} = 3;
$channels[$channel][$operator]{'d2r'} = 0;
$channels[$channel][$operator]{'ssgmode'} = 0;
$channels[$channel][$operator]{'freq'} = 0;
$channels[$channel][$operator]{'octave'} = 0;
}
}
for ( my $channel = 0; $channel < 3; $channel++ ) {
$channels[6+$channel]{'effects'} = 1;
# PSG tone generator channels
$channels[6+$channel]{'freq'} = 0;
$channels[6+$channel]{'att'} = 0xF;
}
# noise generator channel
$channels[9]{'fb'} = 0;
$channels[9]{'nf'} = 0;
$channels[9]{'att'} = 0xF;
my $psgChannelLast = 0;
my %dmfInstruments;
my $dmfInstrumentsCount = 0;
my @dmfPatternData;
# swing.vgz
my $dmfSamplesPerRow = 44100 * $dmfSpeed / $dmfClock;
my $dmfRows = $TotalNumberSamples / $dmfSamplesPerRow;
# TODO
my $dmfRowsPerPattern = $dmfClock;
if ( $dmfRows < 255 ) {
$dmfRowsPerPattern = $dmfRows;
}
my $dmfRowsInPatternMatrix = floor( ( $dmfRows + $dmfRowsPerPattern - 1 ) / $dmfRowsPerPattern );
my $dmfPatternDataLength = $dmfRowsInPatternMatrix * $dmfRowsPerPattern;
for ( my $channel = 0; $channel < 9; $channel++ ) {
for ( my $dmfPatternDataIndex = 0; $dmfPatternDataIndex < $dmfPatternDataLength; $dmfPatternDataIndex++ ) {
$dmfPatternData[$channel][$dmfPatternDataIndex]{'note'} = 0x000;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'octave'} = 0x000;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'volume'} = 0xFFFF;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'instrument'} = 0xFFFF;
for ( my $i = 0; $i < 4; $i++ ) {
$dmfPatternData[$channel][$dmfPatternDataIndex]{'effectCode'}[$i] = 0xFFFF;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'effectValue'}[$i] = 0xFFFF;
}
}
}
my %dmfSamples;
my $dmfSamplesCount = 0;
my $dmfSample = '';
my $dmfSampleStart = -1;
# TODO check for length bounds
while ( $command != 0x66 ) {
$command = ord(substr($vgmTrack,$vgmTrackCurrentOffset,1));
if ( $debug ) {
#printf("command %2.2X (%s)\n",$command,$vgmDetail);
}
my $commandLength = 1;
if ( $command == 0x4F ) {
# TODO
# 0x4F dd : Game Gear PSG stereo, write dd to port 0x06
my $d = ord(substr($vgmTrack,$vgmTrackCurrentOffset+1,1));
$commandLength = 2;
} elsif ( $command == 0x50 ) {
# 0x50 dd : PSG (SN76489/SN76496) write value dd
my $d = ord(substr($vgmTrack,$vgmTrackCurrentOffset+1,1));
# 0 0 d9 d8 d7 d6 d5 d4 tone channel * freq 2nd byte
# 1 0 0 0 d3 d2 d1 d0 tone channel 1 freq
# 1 0 0 1 a3 a2 a1 a0 attenuator channel 1
# 1 0 1 0 d3 d2 d1 d0 tone channel 2 freq
# 1 0 1 1 a3 a2 a1 a0 attenuator channel 2
# 1 1 0 0 d3 d2 d1 d0 tone channel 3 freq
# 1 1 0 1 a3 a2 a1 a0 attenuator channel 3
# 1 1 1 0 0 FB NF1 NF0 noise generator control
# 1 1 1 1 a3 a2 a1 a0 attenuator channel noise generator
my $channel = ( $d & 0x60 ) >> 5;
if ( ( $d & 0x80 ) == 0 ) {
$channel = $psgChannelLast;
}
if ( $debug ) {
#printf("command %2.2X %2.2X (%s)\n",$command,$d,$vgmDetail);
}
if ( $channel == 3 ||
( ( 1 << ( 2 - $channel ) ) & $psgChannelMask ) ) {
my $dmfPatternDataIndex = floor( $samples / $dmfSamplesPerRow );
if ( $d & 0x80 ) {
if ( $d & 0x10 ) {
# attenuator (tone and noise)
my $att = ( $d & 0x0F );
$channels[6+$channel]{'att'} = $att;
if ( $debug ) {
print "PSG channel $channel pattern index $dmfPatternDataIndex att $att\n";
}
if ( $att == 0xF ) {
if ( $dmfPatternDataIndex > 0 &&
$dmfPatternDataIndex < $dmfPatternDataLength ) {
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'note'} = 100;
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'octave'} = 0;
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'volume'} = 0xFFFF;
}
} else {
my $freq = $channels[6+$channel]{'freq'};
if ( $freq &&
$dmfPatternDataIndex < $dmfPatternDataLength ) {
my ($dmfOctave,$dmfNote) = &ConvertPSGFreqToDMFOctaveNote($freq);
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'note'} = $dmfNote;
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'octave'} = $dmfOctave;
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'volume'} = 0xF-$att;
}
}
} else {
if ( $channel < 3 ) {
# tone generator frequency first byte
$channels[6+$channel]{'freq'} = ( $channels[6+$channel]{'freq'} & 0x02F0 ) | ( $d & 0x03 );
} else {
# noise generator control
$channels[9]{'fb'} = ( $d & 0x04 ) >> 2;
$channels[9]{'nf'} = ( $d & 0x03 );
# TODO update pattern table?
}
}
} else {
# tone generator frequency second byte
$channels[6+$channel]{'freq'} = ( $channels[6+$channel]{'freq'} & 0x000F ) | ( ( $d & 0x3F ) << 4 );
my $freq = $channels[6+$channel]{'freq'};
my $att = $channels[6+$channel]{'att'};
if ( $debug ) {
#printf("PSG channel $channel freq 0x%4.4X\n",$channels[6+$channel]{'freq'});
}
if ( $freq ) {
my ($dmfOctave,$dmfNote) = &ConvertPSGFreqToDMFOctaveNote($freq);
if ( $debug ) {
print "PSG channel $channel pattern index $dmfPatternDataIndex freq $freq note $dmfNote octave $dmfOctave\n";
}
if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'note'} = $dmfNote;
$dmfPatternData[6+$channel][$dmfPatternDataIndex]{'octave'} = $dmfOctave;
# TODO better way to handle att->volume
# $dmfPatternData[6+$channel][$dmfPatternDataIndex]{'volume'} = 0xF-$att;
}
}
}
}
$psgChannelLast = $channel;
$commandLength = 2;
} elsif ( $command == 0x52 ||
$command == 0x53 ) {
# TODO
# 0x52 aa dd : YM2612 port 0, write value dd to register aa
# 0x53 aa dd : YM2612 port 1, write value dd to register aa
my $a = ord(substr($vgmTrack,$vgmTrackCurrentOffset+1,1));
my $d = ord(substr($vgmTrack,$vgmTrackCurrentOffset+2,1));
if ( $debug ) {
printf("command %2.2X %2.2X %2.2X (%s)\n",$command,$a,$d,$vgmDetail);
}
# + CH1OP1 CH2OP1 CH3OP1 X CH1OP2 ... CH3OP4 X
# * CH1 CH2 CH3 X
# ^ CH3OP2 CH3OP3 CH3OP4 X
# 30+ through 90+
my $channel = $a & 0x03;
if ( $command == 0x53 ) {
$channel += 3;
}
my $operator = ( $a & 0x0C ) >> 2;
if ( $a == 0x22 ) {
# TODO
# 22 LFO XXXX (LFO EN).1 (LFO FREQ).3
} elsif ( $a == 0x24 ) {
# TODO
# 24 (TIMER A).8
} elsif ( $a == 0x25 ) {
# TODO
# 25 XXXXXX TIMER A LSBs
} elsif ( $a == 0x26 ) {
# TODO
# 26 (TIMER B).8
} elsif ( $a == 0x27 ) {
# TODO
# 27 (CH3 MODE).2 RESETB RESETA ENABLEB ENABLEA LOADB LOADA
} elsif ( $a == 0x28 ) {
# TODO
# 28 OP4 OP3 OP2 OP1 X (CHANNEL).3
my $dmfPatternDataIndex = floor( $samples / $dmfSamplesPerRow );
$channel = ( $d & 0x04 ) ? ( 3 + ( $d & 0x03 ) ) : ( $d & 0x03 );
if ( ( 1 << ( 5 - $channel ) ) & $fmChannelMask ) {
# fm channel not masked off
if ( ( $d & 0xF0 ) == 0xF0 ) {
# key on
if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
# since effects can change fb, ar, mult, and tl
# these don't affect making a unique instrument for dmf
my $dmfInstrumentUnique =
chr($channels[$channel][0]{'alg'}).
#chr($channels[$channel][0]{'fb'}).
chr($channels[$channel][0]{'fms'}).
chr($channels[$channel][0]{'ams'});
my $dmfInstrumentAll =
chr($channels[$channel][0]{'alg'}).
chr($channels[$channel][0]{'fb'}).
chr($channels[$channel][0]{'fms'}).
chr($channels[$channel][0]{'ams'});
# my $tlMin = 0x7F;
# for ( my $operator = 0; $operator < 4; $operator++ ) {
# if ( $channels[$channel][$operator]{'tl'} < $tlMin ) {
# $tlMin = $channels[$channel][$operator]{'tl'};
# }
# }
for ( my $operator = 0; $operator < 4; $operator++ ) {
$dmfInstrumentUnique .=
chr($channels[$channel][$operator]{'am'}).
#chr($channels[$channel][$operator]{'ar'}).
chr($channels[$channel][$operator]{'dr'}).
#chr($channels[$channel][$operator]{'mult'}).
chr($channels[$channel][$operator]{'rr'}).
chr($channels[$channel][$operator]{'sl'}).
#chr($channels[$channel][$operator]{'tl'}).
chr($channels[$channel][$operator]{'dt2'}).
chr($channels[$channel][$operator]{'rs'}).
chr($channels[$channel][$operator]{'dt'}).
chr($channels[$channel][$operator]{'d2r'}).
chr($channels[$channel][$operator]{'ssgmode'});
# my $tl = 0x7F - floor(0x7F * ( 0x7F - $channels[$channel][$operator]{'tl'} ) / ( 0x7F - $tlMin ) );
$dmfInstrumentAll .=
chr($channels[$channel][$operator]{'am'}).
chr($channels[$channel][$operator]{'ar'}).
chr($channels[$channel][$operator]{'dr'}).
chr($channels[$channel][$operator]{'mult'}).
chr($channels[$channel][$operator]{'rr'}).
chr($channels[$channel][$operator]{'sl'}).
chr($channels[$channel][$operator]{'tl'}).
chr($channels[$channel][$operator]{'dt2'}).
chr($channels[$channel][$operator]{'rs'}).
chr($channels[$channel][$operator]{'dt'}).
chr($channels[$channel][$operator]{'d2r'}).
chr($channels[$channel][$operator]{'ssgmode'});
}
my $dmfInstrument = 0;
if ( exists $dmfInstruments{$dmfInstrumentUnique} ) {
$dmfInstrument = $dmfInstruments{$dmfInstrumentUnique};
} else {
$dmfInstrument = $dmfInstrumentsCount;
$dmfInstruments{$dmfInstrumentUnique} = $dmfInstrument;
$dmfInstruments{$dmfInstrumentAll} = $dmfInstrument;
$dmfInstrumentsCount++;
}
if ( ! exists $dmfInstruments{$dmfInstrumentAll} ) {
$dmfInstruments{$dmfInstrumentAll} = -1;
}
$operator = 0;
my $octave = $channels[$channel][$operator]{'octave'};
my $freq = $channels[$channel][$operator]{'freq'};
my ($dmfOctave,$dmfNote) = &ConvertFMOctaveFreqToDMFOctaveNote($octave,$freq);
if ( $debug ) {
print "FM channel $channel pattern index $dmfPatternDataIndex octave $octave freq $freq note $dmfNote octave $dmfOctave instrument $dmfInstrument\n";
}
$dmfPatternData[$channel][$dmfPatternDataIndex]{'note'} = $dmfNote;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'octave'} = $dmfOctave;
# $dmfPatternData[$channel][$dmfPatternDataIndex]{'volume'} = 0x7F-$channels[$channel][3]{'tl'};
$dmfPatternData[$channel][$dmfPatternDataIndex]{'instrument'} = $dmfInstrument;
}
} elsif ( ( $d & 0xF0 ) == 0x00 ) {
if ( $dmfPatternDataIndex > 0 &&
$dmfPatternDataIndex < $dmfPatternDataLength ) {
# key off
$dmfPatternData[$channel][$dmfPatternDataIndex]{'note'} = 100;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'octave'} = 0;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'volume'} = 0xFFFF;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'instrument'} = 0xFFFF;
}
} else {
# partial key on/off
print STDERR "Ignoring partial key on/off\n";
}
}
} elsif ( $a == 0x2A ) {
# 2A (DAC DATA).8
$dmfSample .= chr($d);
} elsif ( $a == 0x2B ) {
# TODO
# 2B (DAC EN).1 XXXXXXX
if ( $dmfSample ne '' &&
$dmfSampleStart >= 0 ) {
my $dmfSampleIndex = -1;
if ( exists $dmfSamples{$dmfSample} ) {
$dmfSampleIndex = $dmfSamples{$dmfSample}{'index'};
} else {
my $dsl = length($dmfSample);
my $dmfSampleSamples = $samples - $dmfSampleStart;
foreach my $dmfSample2 (keys %dmfSamples) {
# ignore samples with ignore flag
# ignore samples that are not close enough in sample length (1/240 of a second for NTSC)
if ( ! exists $dmfSamples{$dmfSample2}{'ignore'} &&
$dmfSampleSamples > ( $dmfSamples{$dmfSample2}{'samples'} - 44100/$dmfClock/4 ) &&
$dmfSampleSamples < ( $dmfSamples{$dmfSample2}{'samples'} + 44100/$dmfClock/4 ) ) {
my $dsl2 = length($dmfSample2);
if ( $dsl > $dsl2 ) {
# new sample is longer
# this allows cutting off a few samples but resulting in same number of matches
#if ( index($dmfSample2,substr($dmfSample,10,$dsl2-20)) >= 0 ) {
# this assumes PCM data starts the same
# (and differences from getting cut off by other PCM)
if ( substr($dmfSample,0,$dsl2) eq $dmfSample2 ) {
$dmfSampleIndex = $dmfSamples{$dmfSample2}{'index'};
$dmfSamples{$dmfSample2}{'ignore'} = 1;
# all samples should use same reference size
$dmfSamples{$dmfSample}{'samples'} = $dmfSamples{$dmfSample2}{'samples'};
last;
}
} else {
# previous sample is longer
if ( substr($dmfSample2,0,$dsl) eq $dmfSample ) {
$dmfSampleIndex = $dmfSamples{$dmfSample2}{'index'};
$dmfSamples{$dmfSample}{'ignore'} = 1;
# all samples should use same reference size
$dmfSamples{$dmfSample}{'samples'} = $dmfSamples{$dmfSample2}{'samples'};
last;
}
}
}
}
# no similar sample found, create a new sample index
if ( $dmfSampleIndex < 0 ) {
$dmfSamples{$dmfSample}{'samples'} = $dmfSampleSamples;
$dmfSampleIndex = $dmfSamplesCount;
$dmfSamplesCount++;
}
$dmfSamples{$dmfSample}{'index'} = $dmfSampleIndex;
}
if ( $debug ) {
my $rate = 44100 / ( $dmfSamples{$dmfSample}{'samples'} / ( length($dmfSample) - 1 ) );
print "Sample rate: $rate\n";
}
my $dmfPatternDataIndex = floor( $dmfSampleStart / $dmfSamplesPerRow );
if ( $dmfSamplesCount > 12 ) {
my $dmfSampleBank = floor( $dmfSampleIndex / 12 );
$dmfSampleIndex = $dmfSampleIndex % 12;
$channels[5][0]{'effects'} = 2;
$dmfPatternData[5][0]{'effectCode'}[1] = 0xEB;
$dmfPatternData[5][0]{'effectValue'}[1] = 0x00;
$dmfPatternData[5][$dmfPatternDataIndex]{'effectCode'}[1] = 0xEB;
$dmfPatternData[5][$dmfPatternDataIndex]{'effectValue'}[1] = $dmfSampleBank;
}
if ( $dmfSampleIndex == 0 ) {
$dmfSampleIndex = 12;
}
if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
$dmfPatternData[5][$dmfPatternDataIndex]{'note'} = $dmfSampleIndex;
$dmfPatternData[5][$dmfPatternDataIndex]{'octave'} = 4;
}
}
my $dmfPatternDataIndex = floor( $samples / $dmfSamplesPerRow );
if ( $d & 0x80 ) {
# DAC enabled
# if ( $dmfSampleStart < 0 ) {
$dmfSample = '';
$dmfSampleStart = $samples;
# }
if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
$dmfPatternData[5][$dmfPatternDataIndex]{'effectCode'}[0] = 0x17;
$dmfPatternData[5][$dmfPatternDataIndex]{'effectValue'}[0] = 0x01;
}
} else {
# DAC disabled
if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
$dmfPatternData[5][$dmfPatternDataIndex]{'effectCode'}[0] = 0x17;
$dmfPatternData[5][$dmfPatternDataIndex]{'effectValue'}[0] = 0x00;
}
$dmfSample = '';
$dmfSampleStart = -1;
}
} elsif ( ( $a & 0xF0 ) == 0x30 ) {
# 30+ X (DT1).3 (MUL).4
my $dt = ( $d & 0x70 ) >> 4;
if ( $dt ) {
$dt = $dt - 1;
} else {
$dt = 3;
}
$channels[$channel][$operator]{'dt'} = $dt;
$channels[$channel][$operator]{'mult'} = ( $d & 0x0F );
} elsif ( ( $a & 0xF0 ) == 0x40 ) {
# 40+ X (TL).7
if ( $debug ) {
# printf("command %2.2X %2.2X %2.2X (%s)\n",$command,$a,$d,$vgmDetail);
}
$channels[$channel][$operator]{'tl'} = ( $d & 0x7F );
$channels[$channel][0]{'effects'} = 4;
my $dmfPatternDataIndex = floor( $samples / $dmfSamplesPerRow );
$dmfPatternData[$channel][$dmfPatternDataIndex]{'effectCode'}[$operator] = 0x12+$operator;
$dmfPatternData[$channel][$dmfPatternDataIndex]{'effectValue'}[$operator] = ( $d & 0x7F );
# if ( $operator == 3 ) {
# my $dmfPatternDataIndex = floor( $samples / $dmfSamplesPerRow );
# if ( $dmfPatternDataIndex < $dmfPatternDataLength ) {
# $dmfPatternData[$channel][$dmfPatternDataIndex]{'volume'} = 0x7F-$channels[$channel][3]{'tl'};
# }
# }
} elsif ( ( $a & 0xF0 ) == 0x50 ) {
# 50+ (RS).2 X (AR).5
$channels[$channel][$operator]{'rs'} = ( $d & 0xC0 ) >> 6;
$channels[$channel][$operator]{'ar'} = ( $d & 0x1F );
} elsif ( ( $a & 0xF0 ) == 0x60 ) {
# 60+ (AM).1 XX (D1R).5
$channels[$channel][$operator]{'am'} = ( $d & 0x80 ) >> 7;
$channels[$channel][$operator]{'dr'} = ( $d & 0x1F );
} elsif ( ( $a & 0xF0 ) == 0x70 ) {
# 70+ XXX (D2R).5
$channels[$channel][$operator]{'d2r'} = ( $d & 0x1F );
} elsif ( ( $a & 0xF0 ) == 0x80 ) {
# 80+ (D1L).6 (RR).2
$channels[$channel][$operator]{'sl'} = ( $d & 0xF0 ) >> 4;
$channels[$channel][$operator]{'rr'} = ( $d & 0x0F );
} elsif ( ( $a & 0xF0 ) == 0x90 ) {
# 90+ XXXX (SSG-EG).2
$channels[$channel][$operator]{'ssgmode'} = ( $d & 0x0F );
} elsif ( ( $a & 0xFC ) == 0xA0 ) {
# A0* (FREQ NUM).8
$operator = 0;
if ( $debug ) {
# printf("command %2.2X %2.2X %2.2X (%s)\n",$command,$a,$d,$vgmDetail);
}
$channels[$channel][$operator]{'freq'} = ( $channels[$channel][$operator]{'freq'} & 0xFF00 ) | $d;
} elsif ( ( $a & 0xFC ) == 0xA4 ) {
# A4* XX (BLOCK/OCTAVE).3 (FREQ NUM).3
$operator = 0;
if ( $debug ) {
# printf("command %2.2X %2.2X %2.2X (%s)\n",$command,$a,$d,$vgmDetail);
}
$channels[$channel][$operator]{'freq'} = ( $channels[$channel][$operator]{'freq'} & 0x00FF ) | ( ( $d & 0x07 ) << 8 );
$channels[$channel][$operator]{'octave'} = ( $d & 0x38 ) >> 3;
} elsif ( ( $a & 0xFC ) == 0xA8 ) {
# TODO
# A8^ (CH3 SUPP FREQ NUM)
$operator = $channel;
$channel = 3;
} elsif ( ( $a & 0xFC ) == 0xAC ) {
# TODO
# AC* XX (CH3 SUPP BLOCK) (CH3 SUPP FREQ NUM)
} elsif ( ( $a & 0xFC ) == 0xB0 ) {
# B0* XX (FEEDBACK) (ALGORITHM)
$channels[$channel][0]{'fb'} = ( $d & 0x38 ) >> 3;
$channels[$channel][0]{'alg'} = ( $d & 0x07 );
} elsif ( ( $a & 0xFC ) == 0xB4 ) {
# B4* (L).1 (R).1 (AMS).2 X (FMS).3
$channels[$channel][0]{'ams'} = ( $d & 0x30 ) >> 4;
$channels[$channel][0]{'fms'} = ( $d & 0x07 );
}
$commandLength = 3;
} elsif ( $command == 0x61 ) {
# TODO
# 0x61 nn nn
# Wait n samples, n can range from 0 to 65535 (approx 1.49
# seconds). Longer pauses than this are represented by multiple
# wait commands.
my $n = unpack("v",substr($vgmTrack,$vgmTrackCurrentOffset+1,2));
$samples += $n;
$samplesLoop += $n if ( $vgmTrackCurrentOffset >= $LoopLocation );
$commandLength = 3;
} elsif ( $command == 0x62 ) {
# TODO
# 0x62
# wait 735 samples (60th of a second), a shortcut for
# 0x61 0xdf 0x02
$samples += 735;
$samplesLoop += 735 if ( $vgmTrackCurrentOffset >= $LoopLocation );
} elsif ( $command == 0x63 ) {
# TODO
# 0x63
# wait 882 samples (50th of a second), a shortcut for
# 0x61 0x72 0x03
$samples += 882;
$samplesLoop += 882 if ( $vgmTrackCurrentOffset >= $LoopLocation );
} elsif ( $command == 0x66 ) {
# 0x66 : end of sound data
} elsif ( $command == 0x67 ) {
my $commandCompatibility = ord(substr($vgmTrack,$vgmTrackCurrentOffset+1,1));
if ( $commandCompatibility != 0x66 ) {
print STDERR "VGM command did not have 0x66 compatibility command: $vgmDetail\n";
return 0;
}
my $dataBlockType = ord(substr($vgmTrack,$vgmTrackCurrentOffset+2,1));
my $dataBlockDataSize = unpack("V",substr($vgmTrack,$vgmTrackCurrentOffset+3,4));
my $dataBlockData = substr($vgmTrack,$vgmTrackCurrentOffset+7,$dataBlockDataSize);
$dataBlock .= $dataBlockData;
$dataBlockSize += $dataBlockDataSize;
# saved for command 0x95
push @dataBlocks, $dataBlockData;
$commandLength = 7 + $dataBlockDataSize;
} elsif ( ( $command & 0xF0 ) == 0x70 ) {
# TODO
# 0x7n : wait n+1 samples, n can range from 0 to 15.
my $n = $command & 0x0F;
$samples += $n+1;
$samplesLoop += $n+1 if ( $vgmTrackCurrentOffset >= $LoopLocation );
} elsif ( ( $command & 0xF0 ) == 0x80 ) {
# 0x8n:
# YM2612 port 0 address 2A write from the data bank, then wait
# n samples; n can range from 0 to 15. Note that the wait is n,
# NOT n+1. (Note: Written to first chip instance only.)
my $n = $command & 0x0F;
$samples += $n;
$samplesLoop += $n if ( $vgmTrackCurrentOffset >= $LoopLocation );
my $s = substr($dataBlock,$dataBlockOffset,1);
$dmfSample .= $s;
if ( $debug ) {
#printf("command %2.2X %2.2X (%s)\n",$command,$d,$vgmDetail);
}
$dataBlockOffset++;
} elsif ( $command == 0x90 ) {
# TODO
$commandLength = 5;
} elsif ( $command == 0x91 ) {
# TODO
$commandLength = 5;
} elsif ( $command == 0x92 ) {
# TODO
$commandLength = 6;
} elsif ( $command == 0x93 ) {
# TODO
$commandLength = 11;
} elsif ( $command == 0x94 ) {
# TODO
$commandLength = 2;
} elsif ( $command == 0x95 ) {
# TODO
$commandLength = 5;
} elsif ( $command == 0xE0 ) {
my $dataBlockSeek = unpack("V",substr($vgmTrack,$vgmTrackCurrentOffset+1,4));
$dataBlockOffset = $dataBlockSeek;
$commandLength = 5;
} else {
print STDERR sprintf("Unsupported command %2.2X (%s)\n",$command,$vgmDetail);
return 0;
}
$vgmTrackCurrentOffset += $commandLength;
}
if ( $TotalNumberSamples != $samples ) {
print STDERR "Error determining total number samples ($TotalNumberSamples vs $samples)\n";
}
if ( $LoopOffset && $LoopNumberSamples != $samplesLoop ) {
print STDERR "Error determining loop number samples ($LoopNumberSamples vs $samplesLoop)\n";
}
my $dmfInstrumentsTotal = keys %dmfInstruments;
$dmfInstrumentsTotal -= $dmfInstrumentsCount;
print "DMF Instruments Unique: $dmfInstrumentsCount\n";
if ( $debug ) {
print "DMF Instruments Total: $dmfInstrumentsTotal\n";
}
my @GD3Strings;
if ( $GD3Offset ) {
if ( $vgmTrackCurrentOffset > $GD3Location ) {
print STDERR "GD3 offset points into vgm data\n";
return 0;
} elsif ( $vgmTrackCurrentOffset < $GD3Location ) {
print STDERR "Data being skipped between vgm data and GD3 data\n";
$vgmTrackCurrentOffset = $GD3Location;
}
my $GD3Tag = substr($vgmTrack,$vgmTrackCurrentOffset,4);
if ( $GD3Tag ne 'Gd3 ' ) {
print STDERR "GD3 does not have valid GD3 identifier\n";
} else {
# GD3 uses little endian
# 0x00000100
my $GD3Version = unpack("V",substr($vgmTrack,$vgmTrackCurrentOffset+4,4));
if ( $GD3Version < 0x00000100 ) {
print STDERR "GD3 version prior to v1.00\n";
} else {
my $GD3Length = unpack("V",substr($vgmTrack,$vgmTrackCurrentOffset+8,4));
# 11 strings
my $GD3Offset = 0;
my $GD3String = '';
my $GD3StringTerminator = chr(0x00).chr(0x00);
while ($GD3Offset < $GD3Length) {
my $GD3Char = substr($vgmTrack,$vgmTrackCurrentOffset+12+$GD3Offset,2);
if ( $GD3Char eq $GD3StringTerminator ) {
from_to($GD3String, 'UTF-16le', 'UTF-8');
push @GD3Strings, $GD3String;
$GD3String = '';
} else {
$GD3String .= $GD3Char;
}
$GD3Offset += 2;
}
# print out utf-8 of strings
if ( $debug && 0 ) {
my $i = 0;
foreach my $GD3StringDebug (@GD3Strings) {
my $x = length($GD3StringDebug);
print "$i: ";
for ( my $j = 0; $j < $x; $j += 2 ) {
print substr($GD3StringDebug,$j,1);
}
print "\n";
$i++;
}
}
if ( $GD3String ne '' ) {
print "GD3 strings found: ".$#GD3Strings."\n";
print STDERR "GD3 length ends in middle of a string: $vgmDetail\n";
@GD3Strings = ();
}
if ( $#GD3Strings >= 0 && $#GD3Strings < 10 ) {
print "GD3 strings found: ".$#GD3Strings."\n";
print STDERR "Not enough strings in GD3: $vgmDetail\n";
@GD3Strings = ();
}
# seeing VGM rips with 12 string instead of 11...
# so checking for more than 12 instead of 11 as planned
if ( $#GD3Strings > 11 && $GD3Version == 0x00000100 ) {
print "GD3 strings found: ".$#GD3Strings."\n";
print STDERR "Too many strings for GD3 v1.00: $vgmDetail\n";
}
$vgmTrackCurrentOffset += 12 + $GD3Length;
}
}
}
if ( $vgmTrackCurrentOffset != $vgmTrackLength ) {
print STDERR "Unused data in VGM track: $vgmDetail\n";
}
###########################################################################
# DMF
###########################################################################
my $dmfData = '';
my $dmfChannels = 10;
# START OF DMF FORMAT
# FORMAT FLAGS
# Format String
$dmfData .= '.DelekDefleMask.';
# File Version
# DefleMask v0.12.0
$dmfData .= chr(0x18);
# SYSTEM SET
# SYSTEM_GENESIS (0x2)
$dmfData .= chr(0x02);
# VISUAL INFORMATION
my $songName = '';
my $songAuthor = '';
if ( $#GD3Strings >= 10 ) {
if ( $GD3Strings[0] ne '' ) {
if ( $GD3Strings[2] ne '' ) {
$songName .= $GD3Strings[2] . ' : ';
}
$songName .= $GD3Strings[0];
}
if ( $GD3Strings[6] ne '' ) {
$songAuthor .= $GD3Strings[6];
}
}
my $songNameLength = length($songName);
if ( $songNameLength > 255 ) {
$songName = substr($songName,0,255);
$songNameLength = 255;
}
my $songAuthorLength = length($songAuthor);
if ( $songAuthorLength > 255 ) {
$songAuthor = substr($songAuthor,0,255);
$songAuthorLength = 255;
}
# Song Name Chars Count
$dmfData .= chr($songNameLength);
# Song Name Chars
$dmfData .= $songName;
# Song Author Chars Count
$dmfData .= chr($songAuthorLength);
# Song Author Chars
$dmfData .= $songAuthor;
# Highlight A in patterns
$dmfData .= chr(0x08);
# Highlight B in patterns
$dmfData .= chr(0x10);
# MODULE INFORMATION
# Tick Base
$dmfData .= chr(0x00);
# Tick Time 1
$dmfData .= chr($dmfSpeed);
# Tick Time 2
$dmfData .= chr($dmfSpeed);
# Frames Mode (0 = PAL, 1 = NTSC)
if ( $dmfClock == 50 ) {
$dmfData .= chr(0x00);
} else {
$dmfData .= chr(0x01);
}
# Using Custom Hz
$dmfData .= chr(0x00);
# Custom HZ value 1
$dmfData .= chr(0x00);
# Custom HZ value 2
$dmfData .= chr(0x00);
# Custom HZ value 3
$dmfData .= chr(0x00);
# TOTAL_ROWS_PER_PATTERN
# DMF uses little endian
$dmfData .= pack("V",$dmfRowsPerPattern);
# TOTAL_ROWS_IN_PATTERN_MATRIX
$dmfData .= chr($dmfRowsInPatternMatrix);
# PATTERN MATRIX VALUES
for ( my $channel = 0; $channel < $dmfChannels; $channel++ ) {
for ( my $dmfPatternIndex = 0; $dmfPatternIndex < $dmfRowsInPatternMatrix; $dmfPatternIndex++ ) {
$dmfData .= chr($dmfPatternIndex);
}
}
# INSTRUMENTS DATA
# TOTAL_INSTRUMENTS
$dmfData .= chr($dmfInstrumentsCount);
my $dmfInstrumentsCountVerify = 0;
foreach my $dmfInstrument (sort { $dmfInstruments{$a} <=> $dmfInstruments{$b} } keys %dmfInstruments) {
my $dmfInstrumentsIndex = $dmfInstruments{$dmfInstrument};
next if $dmfInstruments{$dmfInstrument} < 0;
# 52 bytes, unique strings will have less bytes
next if ( length($dmfInstrument) != 52 );
my $instrumentName = 'Instrument'.$dmfInstrumentsIndex;
# Instruement Name Chars Count
$dmfData .= chr(length($instrumentName));
# Instrument Name
$dmfData .= $instrumentName;
# Instrument Made
$dmfData .= chr(0x01);
# INSTRUEMENT MODE IS FM
$dmfData .= $dmfInstrument;
$dmfInstrumentsCountVerify++;
}
if ( $dmfInstrumentsCount != $dmfInstrumentsCountVerify ) {
print STDERR "Error in dmf instruments: $dmfInstrumentsCount vs $dmfInstrumentsCountVerify\n";
}