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- #! /usr/bin/sdlbrt
- finp$="tune.vgm"
- '- .vgm to VortexTracker .txt converter - AY-3-8910 version
- '- copyleft Paulo Silva, feb'16
- '-------------------------------
- '- bugs:
- '- - an acute sound might appear because an issue related to volume 0 that VortexTracker doesnt support, R-- note used instead (and the converter should store which note/frequency is for a probable volume changing, and set back the note/frequency value back)
- '- - doesn't read yet the author/title information
- '- - 'L' will be useful for the loop point location
- '- - probably will need a sample counter before converting
- '- - missing noise support
- '- - frequncy inaccuracy from the germanic notation formula probably fixed, needs more testing
- '-------------------------------
- ltxtm$="....|..|--- .... ....|--- .... ....|--- .... ....":ltxcr$=ltxtm$
- freq0=0:freq1=0:freq2=0:vol0=0:vol1=0:vol2=0
- patsz=64:patc=0:patid=0:freqq=0
- hdram=0x40:vgmv=0:veof=0
- dim hdrv[256]
- if argc>2 then:finp$=argv(2):end if
- fout2$=finp$+"_vt.txt":fout3$=finp$+"_vt_debug.txt"
- frmc=0:frmr=300:trg=0
- frmi=735
- if argc>3 then:
- if argv(3)="1" or ucase$(argv(2))="-PAL" then
- frmi=882:end if:end if
- debug=0
- if argc>4 then:
- if argv(4)="1" or ucase$(argv(2))="-DEBUG" then
- debug=1:end if:end if
- '- fix: 0x0FE=440hz=A-4
- function nttfrq$(freqb)
- e$= "C-1C#1D-1D#1E-1F-1F#1G-1G#1A-1A#1B-1"
- e$=e$+"C-2C#2D-2D#2E-2F-2F#2G-2G#2A-2A#2B-2"
- e$=e$+"C-3C#3D-3D#3E-3F-3F#3G-3G#3A-3A#3B-3"
- e$=e$+"C-4C#4D-4D#4E-4F-4F#4G-4G#4A-4A#4B-4"
- e$=e$+"C-5C#5D-5D#5E-5F-5F#5G-5G#5A-5A#5B-5"
- e$=e$+"C-6C#6D-6D#6E-6F-6F#6G-6G#6A-6A#6B-6"
- e$=e$+"C-7C#7D-7D#7E-7F-7F#7G-7G#7A-7A#7B-7"
- e$=e$+"C-8C#8D-8D#8E-8F-8F#8G-8G#8A-8A#8B-8---"
- tmq=141-(int((log(freqb*.99)/log(2))*12))
- if tmq<1 then:tmq=1:end if
- if tmq>97 then:tmq=97:end if
- return mid$(e$,(tmq*3)-2,3)
- end function
- open finp$ for input as #1
- for i=0 to 255
- hdrv[i]=readbyte(1)
- next
- close #1
- hdram=0x040
- vgmv=hdrv[8]+hdrv[9]*256
- if vgmv>=0x0150 then:hdram=0x080:end if
- if vgmv>=0x0170 then:hdram=0x100:end if
- '- wrong information???
- ttsam=hdrv[0x18]+hdrv[0x19]*256+hdrv[0x1A]*65536+hdrv[0x1B]*16777216
- hsam$="PlayOrder=L0"
- for i=1 to (ttsam/(frmi*patsz))-1
- hsam$=hsam$+","+str$(i)
- next
- open finp$ for input as #1
- open fout2$ for output as #2
- open fout3$ for output as #3
- print #2,"[Module]"
- print #2,"VortexTrackerII=1"
- print #2,"Version=3.6"
- print #2,"Title="
- print #2,"Author="
- print #2,"NoteTable=2"
- print #2,"Speed=1"
- print #2,hsam$
- print #2," "
- print #2,"[Ornament1]":print #2,"L0":print #2," "
- print #2,"[Sample1]":print #2,"Tne +000_ +00_ F_ L":print #2," "
- print #2,"[Pattern0]"
- '- the amount of header bytes depends on vgm format version
- for eee=0 to hdram-1:q0=readbyte(1):next '- read offset byte first
- txou1$=" #("+str$(0)+")"
- while veof=0:
- q0=readbyte(1)
- '- vgm eof command
- if q0=0x66 then:
- veof=1
- print #3,"--vgm-eof--"
- print #2," "
- end if
- '- delay 1 byte (1..16 samples)
- if bitwiseand(q0,0x70)=0x70 then
- frmc=frmc+bitwiseand(q0,0xF)+1
- txou1$=" #("+str$(frmc)+")"
- 'print #3,txou1$
- end if
- '- delay 3 bytes (0..65535 samples)
- if q0=0x61 then
- q0=readbyte(1)
- frmc=frmc+q0
- q0=readbyte(1)
- frmc=frmc+(q0*256)
- txou1$=" #("+str$(frmc)+")"
- 'print #3,txou1$
- end if
- '- 1 ntsc frame delay, 735 samples
- if q0=0x62 then
- frmc=frmc+735
- txou1$=" #("+str$(frmc)+")"
- 'print #3,txou1$
- end if
- '- 1 pal frame delay, 882 samples
- if q0=0x63 then
- frmc=frmc+882
- txou1$=" #("+str$(frmc)+")"
- 'print #3,txou1$
- end if
- '- updates frameout pulses
- while frmr<frmc
- '- writes 1F in the first line of the first pattern
- if (patc<1 and patid=0) then
- ltxcr$=replace$(12,ltxcr$,"1F")
- ltxcr$=replace$(26,ltxcr$,"1F")
- ltxcr$=replace$(40,ltxcr$,"1F")
- end if
- '- creates a new pattern
- if patc>(patsz-1) then:
- print #2," "
- patid=patid+1:patc=0
- txou9$="[Pattern"+str$(patid)+"]"
- print #2,txou9$
- end if
- '- writes a pattern line in each frame
- if trg=0 then
- print #3,"--frameout-unchanged--"
- print #2,ltxtm$
- else
- print #3,"--frameout--"
- print #2,ltxcr$
- ltxcr$=ltxtm$
- trg=0
- end if
- frmr=frmr+frmi
- patc=patc+1
- end while
- '- token 0xA0 gets registers and values to AY-3-8910 output
- if q0=0xA0 then
- q0=readbyte(1)
- '- channel 0, fine
- if q0=0 then
- q0=readbyte(1)
- freq0= bitwiseor((bitwiseand(freq0,0xF00)),(bitwiseand(q0,0x0FF)))
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(8,ltxtm1$,nttfrq$(freq0))
- ltxcr$=replace$(8,ltxcr$,nttfrq$(freq0))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 0, coarse
- if q0=1 then
- q0=readbyte(1)
- freq0= bitwiseor ( (bitwiseand(q0*256,0xF00)),(bitwiseand(freq0,0x0FF)) )
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(8,ltxtm1$,nttfrq$(freq0))
- ltxcr$=replace$(8,ltxcr$,nttfrq$(freq0))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 1, fine
- if q0=2 then
- q0=readbyte(1)
- freq1= bitwiseor ( (bitwiseand(freq1,0xF00)),(bitwiseand(q0,0x0FF)) )
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(22,ltxtm1$,nttfrq$(freq1))
- ltxcr$=replace$(22,ltxcr$,nttfrq$(freq1))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 1, coarse
- if q0=3 then
- q0=readbyte(1)
- freq1= bitwiseor ( (bitwiseand(q0*256,0xF00)),(bitwiseand(freq1,0x0FF)) )
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(22,ltxtm1$,nttfrq$(freq1))
- ltxcr$=replace$(22,ltxcr$,nttfrq$(freq1))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 2, fine
- if q0=4 then
- q0=readbyte(1)
- freq2= bitwiseor ( (bitwiseand(freq2,0xF00)),(bitwiseand(q0,0x0FF)) )
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(36,ltxtm1$,nttfrq$(freq2))
- ltxcr$=replace$(36,ltxcr$,nttfrq$(freq2))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 2, coarse
- if q0=5 then
- q0=readbyte(1)
- freq2= bitwiseor ( (bitwiseand(q0*256,0xF00)),(bitwiseand(freq2,0x0FF)) )
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(36,ltxtm1$,nttfrq$(freq2))
- ltxcr$=replace$(36,ltxcr$,nttfrq$(freq2))
- print #3,ltxtm2$
- trg=1
- end if
- '?????
- if q0=6 then
- print #3,ltxtm$
- end if
- '?????
- 'if q0=7 then
- ' q0=readbyte(1)
- ' ltxtm1$=ltxtm$
- ' ltxtm2$=left$(ltxtm1$,31)+ right$(bin$(512+q0),8) +right$(ltxtm1$,2)+txou1$
- ' print #3,ltxtm2$
- ' trg=1
- ' end if
- '- channel 1, volume
- if q0=8 then
- q0=readbyte(1)
- vol0= bitwiseand(q0,0xF)
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(15,ltxtm1$,ucase$(right$(hex$(0x10+vol0),1)))
- ltxcr$=replace$(15,ltxcr$,ucase$(right$(hex$(0x10+vol0),1)))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 2, volume
- if q0=9 then
- q0=readbyte(1)
- vol1= bitwiseand(q0,0xF)
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(29,ltxtm1$,ucase$(right$(hex$(0x10+vol1),1)))
- ltxcr$=replace$(29,ltxcr$,ucase$(right$(hex$(0x10+vol1),1)))
- print #3,ltxtm2$
- trg=1
- end if
- '- channel 3, volume
- if q0=10 then
- q0=readbyte(1)
- vol2= bitwiseand(q0,0xF)
- ltxtm1$=ltxtm$
- ltxtm2$=replace$(43,ltxtm1$,ucase$(right$(hex$(0x10+vol2),1)))
- ltxcr$=replace$(43,ltxcr$,ucase$(right$(hex$(0x10+vol2),1)))
- print #3,ltxtm2$
- trg=1
- end if
- end if
- if eof(1)<>0 then:veof=1:end if
- wend
- close #1:close #2:close #3
- if debug=0 then:
- shell("rm "+fout3$)
- end if
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