[ scummvm-Feature Requests-636985 ] FMTOWNS: Add YM2612 FM synth emulation
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Tue Oct 7 13:11:43 CEST 2003
Feature Requests item #636985, was opened at 2002-11-12 00:07
Message generated for change (Comment added) made by jamieson630
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Category: None
Group: None
>Status: Closed
>Resolution: Fixed
Priority: 5
Submitted By: Martin (marticus)
Assigned to: Jamieson Christian (jamieson630)
Summary: FMTOWNS: Add YM2612 FM synth emulation
Initial Comment:
First, apologies if this bug is the same cause as the no looping audio; but in zak256 when you use the kazoo it just plays a blip, whereas using the fm towns emulator he plays the indy theme.
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>Comment By: Jamieson Christian (jamieson630)
Date: 2003-10-07 06:11
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YM2612 implementation is complete, albeit with a few little
behavioral quirks that will need to be ironed out. The
polyphony issue has been corrected, so tracks such as the
Indy theme are now properly playing the two-part harmony at
the end. On the other hand, the generous polyphony seems
to cause some notes to keep going longer than intended.
We'll keep tweaking....
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Comment By: Alex Holland (cloney)
Date: 2003-10-06 05:42
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Meh. That first paragraph is supposed to read that I'm
-also- running the FM Towns games through afforementioned
ScummVM build for comparison.
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Comment By: Alex Holland (cloney)
Date: 2003-10-06 05:41
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I've just run Zak and Indy 3 through UNZ, the FM Towns
emulator that uses the MAME code for the YM2612. I'm running
this through a pre-optimised YM2612 Win32 build of ScummVM
that Jamieson630 gave me yesterday.
Assuming UNZ is correct, the instrumentation contained
ScummVM seems to be spot on. However, ScummVM seems to be
missing out some channels in comparison to UNZ.
For example, the Kazoo theme from Zak and the whip theme
from Indy (same tune, different instruments) splits into two
channels in UNZ, but not in ScummVM. I've made MP3s of both
of these.
UNZ can't seem to play midi at the same time as a digital
sound loop, so the music for Berlin (where there's a fire
sound loop) and for the Piano in the Zeppelin (where there's
an engine sound loop) are both fairly messed up in UNZ. I've
made MP3s of both - they both start properly, but gradually
drop channels as the song goes on. Not sure if there's any
way around this, really. At any rate, the start of the
Berlin music sounds identical to ScummVM.
I'll send the MP3s next time I see someone on IRC. UNZ is
one of the most awful things I've ever used, by the way.
Cloney
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-10-05 10:57
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Okay, all the hooks for the YM2612 MidiDriver are in CVS, and
a stub factory function is currently returning 0. The actual
YM2612 implementation has been submitted as a patch
(#818175), and will be committed once all portability issues
have been worked out. (Right now I'd say it probably won't
compile outside MSVC.) Stay tuned....
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-10-04 11:09
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A status report -- I got EUPPlayer (GPL) hotwired to
ScummVM and playing tunes. It needs a lot of work before it's
ready to deploy, but I'll try to get a work-in-progress into
CVS once the worst hacks are cleaned up. Main issues:
(1) The instruments don't seem to be getting set up quite
right. The same song can sound slightly different depending
on what was played before it.
(2) The music for Indy3-Towns plays, as does Zak-Towns,
but the distaff in Loom-Towns is not making any sound.
(3) The code is using 64-bit integers (or fixed-point decimal
numbers), which is slow and not real portable.
(4) The parser is presently hotwired to the MidiDriver wrapper
such that iMuse is bypassed, hence EOT is not detected by
the Player and getSoundStatus() returns bad results.
Hopefully I can get this cleaned up and in CVS for review in
the next 48 hours.
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Comment By: Jonathan Gray (khalek)
Date: 2003-10-04 06:15
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oh and
http://www.smspower.org/maxim/forumstuff/ym2612/ym2612.html
which H-Clone mentioned on irc has some relevant tech details.
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Comment By: Jonathan Gray (khalek)
Date: 2003-10-04 06:12
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Add a relevant url so I don't have to go hunting google for
it in future when I want to find it:
http://www.dennougedougakkai-ndd.org/pub/eupplayer-win32/
An update for those not on irc, it seems that all the
genesis/mega drive emulators use the MAME code which is
under a non GPL compat license. Jamieson is looking into
the eupplayer code currently as its licensed under the GPL.
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-09-17 02:15
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Ah, I guess I missed out on what it sounded like when it was
broken. Glad it's fixed.
The remainder of this "bug" is adding proper instrumentation
support for the Euphony music. I am moving this to the FRs
and renaming it to that effect. Now that game-critical sounds
(e.g. Loom distaff) can at least be heard, this is once again
pretty low priority.
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Comment By: Andrej Sinicyn (andrej4000)
Date: 2003-09-17 02:05
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Well, the "blip" seems to work properly since some months.
The sounds is heard everytime you see the machine working,
so this should be solved.
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-09-16 16:14
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Maybe this comes way too late, but....
In response to andrej4000's post from 2002-11-24, the
problem with the 60-Hz sound from the big machine is NOT
the same as the problem with the kazoo tune. The machine
sound is a Type 0 (digital sample) resource. And it's pretty
short. Though I've not heard the sound on the original FM
Towns or an emulator, my first guess would be that on Zak
Towns, it was meant to be just a short blip instead of a
constant hum.
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-09-16 07:17
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I've implemented a Euphony parser, per Hibernatus' notes.
Since the FM Town synth chip is not being emulated yet, the
instruments in the music tracks are not being used. Instead, a
stock Adlib (OPL2) instrument is being used for all channels.
This at least makes the music audible, which is especially
important for the Loom distaff. Instrument support, as well as
tempo/timing validation, are still pending.
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Comment By: Jonathan Gray (khalek)
Date: 2003-08-22 09:37
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Just a note that the YM2612 was used for FM synth on the
Sega megadrive/genesis so there should be quite a bunch of
code to pick from under a range of licenses, assuming they
aren't all pinching it off MAME :)
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Comment By: Jonathan Gray (khalek)
Date: 2003-08-18 05:49
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Euphony tunes are also used for the notes on the distaff in
loom, possibly other places in the game. Only looked at the
very start so far.
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Comment By: Jamieson Christian (jamieson630)
Date: 2003-08-09 10:25
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I have to find another decent window in which to sit down
and look at this. But my first impression, looking through the
Euphony player code in the link, is that it requires that we
include a second FM chipset emulator in order to generate
proper sound output. That's not something I intend to just
slam into ScummVM in an hour or two. Since we're talking
about a 6-note, 2-second ditty, this will be pretty low on the
TODO list.
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Comment By: Thomas Combeleran (hibernatus)
Date: 2003-07-18 00:21
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other examples:
sound 29 40 54 and 66 in Indy3 FM Towns.
but nobody has it anyway :/
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Comment By: James Brown (ender)
Date: 2003-07-04 08:00
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Jamieson, please let me know if you are able to look at
this - as your really the only sound person we have at the
moment. :)
Hibernatus has pretty much worked everything out, so it
shouldn't be too much work.
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Comment By: Thomas Combeleran (hibernatus)
Date: 2003-06-26 15:07
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I wrote a few notes about the kazoo tune format.
http://hibernatus34.free.fr/pv/kazoo_tune.txt
Not much, but anyway, i've just found the name of the format
(Euphony) and there's no need for RE anymore.
Thanks to google, here is a link to the sources of a program
which can read Euphony files:
http://www.purose.net/befis/download/lib/eupplay.lzh
Here is a rough conversion of the SO block into an EUP file:
http://hibernatus34.free.fr/pv/kazoo.eup
http://hibernatus34.free.fr/pv/kazoo.fmb
FMB files contain FM sounds (for the YM2612). You can find
YM2612 emulators on the web. Example:
http://www.squish.net/cgi-
bin/cvsweb.cgi/generator/ym2612/fm.c?rev=1.4&content-
type=text/x-cvsweb-markup
PMB files contain PCM sounds (for the RF5C68). And i think
it's what is used for sound effects in fm towns scumm games.
There is just one instrument and no music in the SO block.
EUP files and player: http://www.bea.hi-ho.ne.jp/gaku-
iwa/eup/
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Comment By: Ferdinant Hauser (desperatecry)
Date: 2003-06-10 20:05
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The kaazoo sound is not an audio-track!
using the UNZ-fmtowns-emulator you will recognize, that it is
defenitely a MIDI-sound or something like that.
Greetings,
Ferdi
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Comment By: Thomas Combeleran (hibernatus)
Date: 2003-06-08 10:51
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No, that track is for the indy3 demo on the same CD.
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Comment By: Thomas Combeleran (hibernatus)
Date: 2003-06-08 10:14
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No, that track is for the indy3 demo on the same CD.
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Comment By: Tobias Hellgren (thanius)
Date: 2003-06-07 18:55
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That blip should stop the backgroundmusic and play the
Indy-tune (also an audiotrack), but it doesn't. Btw, if it's
any help, the Indy-tune is track 22 on the CD.
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Comment By: Thomas Combeleran (hibernatus)
Date: 2003-05-25 01:42
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At 0xD (from the start of the SO block), there is the type of
sound (a byte).
0 is for sound effects
1 is for musics
2 is for CD tracks
You should test that instead of the size of the block to know
what is a CD track. And also you'll be able to ignore the
kazoo tune until you understand the format.
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Comment By: Tobias Hellgren (thanius)
Date: 2002-12-15 18:07
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The kazoo-sound is not on an audiotrack, I've checked them
all out. There's a cool orchestrated Indy-theme there,
though. Too bad that they've changed the kazoo-tune from
"Pop goes the weasel". ;(
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Comment By: Andrej Sinicyn (andrej4000)
Date: 2002-11-24 10:15
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You were right!
This sound is stored in the LFL-Files and isn't played.
The same problem is e.g. with the souind of the alien 60-Hz-
Machine.
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Comment By: Martin (marticus)
Date: 2002-11-15 19:17
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Yes but I played it on the FM-Towns emulator and heard the sound there.
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Comment By: Andrej Sinicyn (andrej4000)
Date: 2002-11-15 06:27
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So of course you can't hear the sound...
That's not a bug. This thread can be closed...
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Comment By: Martin (marticus)
Date: 2002-11-13 22:01
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No, because when I had the ISO for the FM-Towns emulator it was only 4 meg and no audio tracks.
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Comment By: Andrej Sinicyn (andrej4000)
Date: 2002-11-13 14:38
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Hm... I think the kazoo-sound is stored as an audio-track.
If you don't have it, you can't hear it.
If I'm right, this thread can be colsed.
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