Potential new MMF Format

[Yuvi-App]

Hi Umjammer,

I work heavily with the Keitai community to preserve games and applications from cellphones back in the 2000s.
We had recently acquired some dumps from an AU phone that contains EZWeb apps. After extracting, we were left with some form of MMF files.
These files do not play on anything like PSMPlayer, Yamaha SMAF, or anything of the nature.
After digging through hex, I started to notice while they do follow some of the MMF standards, they are not fully the same.
As depending on what file you look at, you will see they contain

EXVO
EXWV
SEQU

Some files will contain multiples of the above.
And after each EXVO/EXWV/SEQU, there is a uint32 value of the chunk size.

Any insight or help would be greatly appreciated, as our end goal is to have these converted to MIDI or MFi.

I've attached a couple files for analyzing.
mmf.zip

Thanks!

[umjammer]

i found a pretty good tool for smaf.

• https://github.com/but80/smaf825

this tool dumps your files as below.

chunks you gave seem directory control massages for Yamaha MA# chip.
source code is also available and it would help you.

• https://github.com/but80/smaf825/blob/v1/smaf/chunk/mmmg_exvo.go
• https://github.com/but80/smaf825/blob/v1/smaf/chunk/mmmg_voic.go

$ smaf825 dump ~/src/vavi/vavi-sound/tmp/yuvi/rc_0.mmf
[WARNING] Unsupported exclusive type: [43 04 01 79 45 02 10 F0 68 01 17 07 02 7F D0 28 03 17 40 02 2F F0 51 01 10 A7 02 4F E0 28 03 10 40]
[WARNING] Unsupported exclusive type: [43 04 01 79 83 22 86 E5 38 00 10 05 12 84 E6 9D 00 20 40 12 82 E6 8C 01 10 00 22 82 E9 00 07 10 00]
[WARNING] Unsupported exclusive type: [43 04 01 79 87 02 5A 60 00 10 13 4B 02 56 C1 5C 30 10 10 02 66 50 02 05 15 08 02 65 51 1C 03 17 D8]
[WARNING] Unsupported exclusive type: [43 04 01 79 42 02 6F D0 05 05 10 10 02 6F D0 2C 05 12 40 02 4F D0 45 05 17 A4 02 6F D0 28 03 15 40]
[WARNING] Unsupported exclusive type: [43 04 02 01 0C]
MMF File Chunk: MMMD, 2047 bytes
	ContentsInfoChunk: CNTI, 5 bytes
		ContentsClass: 0x00
		ContentsType: 0xF0
		ContentsCodeType: 0x01
		CopyStatus: 0xFD
		CopyCounts: 0x00
		Stream: ""
		Options: {Vendor: Carrier: Category: Title: Artist: LyricWriter: Composer: Arranger: Copyright: ManagementGroup: ManagementInfo: CreatedDate: UpdatedDate:}
	OptionalDataChunk: OPDA, 33 bytes
		DataChunk: Dch*(0xFF), 25 bytes
			Code type: 0xFF
			Stream: "ES\u0000\u0001\ufffdA0\u0000\u0006Y332F0A2\u0000\u0006Y332CA"
			Options: {Vendor: Carrier: Category: Title: Artist: LyricWriter: Composer: Arranger: Copyright: ManagementGroup: ManagementInfo: CreatedDate: UpdatedDate: EditStatus: VCard:}
	MMMGChunk: MMMG, 1983 bytes
		MMMGVoiceChunk: VOIC, 180 bytes
			MMMGEXVOChunk: EXVO, 37 bytes
				Exclusive: Exclusive [43 04 01 79 45 02 10 F0 68 01 17 07 02 7F D0 28 03 17 40 02 2F F0 51 01 10 A7 02 4F E0 28 03 10 40] (33 bytes)
			MMMGEXVOChunk: EXVO, 37 bytes
				Exclusive: Exclusive [43 04 01 79 83 22 86 E5 38 00 10 05 12 84 E6 9D 00 20 40 12 82 E6 8C 01 10 00 22 82 E9 00 07 10 00] (33 bytes)
			MMMGEXVOChunk: EXVO, 37 bytes
				Exclusive: Exclusive [43 04 01 79 87 02 5A 60 00 10 13 4B 02 56 C1 5C 30 10 10 02 66 50 02 05 15 08 02 65 51 1C 03 17 D8] (33 bytes)
			MMMGEXVOChunk: EXVO, 37 bytes
				Exclusive: Exclusive [43 04 01 79 42 02 6F D0 05 05 10 10 02 6F D0 2C 05 12 40 02 4F D0 45 05 17 A4 02 6F D0 28 03 15 40] (33 bytes)
		SequenceDataChunk: SEQU, 1785 bytes
			Tr.00 PC @0
			Tr.00 CC Expression(11) Value=80
			Tr.00 Note C5(72) Vel=127
			Tr.01 PC @1

                         ⋮

this file is corrupted?

$ smaf825 dump ~/src/vavi/vavi-sound/tmp/yuvi/00_mmf.mmf 
[WARNING] Unsupported exclusive type: [43 05 02 01 00 29 04 78 40 60 60 F0 00 01 00 00 00 00 03 BE 00]
<nil *FileChunk>

[Yuvi-App]

Oh that's great!, Well need to figure out how to implement this data into a tool to convert to midi, so it can be played without an YMF825.

I believe you are correct on 00_mmf.mmf, that must of been corrupt. As after re-extracting it dumps correctly now using SMAF825.
mmf.zip

[WARNING] Unsupported exclusive type: [43 05 02 01 00 1F 40 78 40 80 80 60 00 01 00 00 00 00 02 71 00]
MMF File Chunk: MMMD, 538 bytes
       ContentsInfoChunk: CNTI, 5 bytes
               ContentsClass: 0x00
               ContentsType: 0xF0
               ContentsCodeType: 0x01
               CopyStatus: 0xF8
               CopyCounts: 0x00
               Stream: ""
               Options: {Vendor: Carrier: Category: Title: Artist: LyricWriter: Composer: Arranger: Copyright: ManagementGroup: ManagementInfo: CreatedDate: UpdatedDate:}
       OptionalDataChunk: OPDA, 33 bytes
               DataChunk: Dch*(0xFF), 25 bytes
                       Code type: 0xFF
                       Stream: "ES\u0000\u0001\ufffdA0\u0000\u0006Yv193FA2\u0000\u0006Yv19E2"
                       Options: {Vendor: Carrier: Category: Title: Artist: LyricWriter: Composer: Arranger: Copyright: ManagementGroup: ManagementInfo: CreatedDate: UpdatedDate: EditStatus: VCard:}
       MMMGChunk: MMMG, 474 bytes
               MMMGVoiceChunk: VOIC, 363 bytes
                       UnknownChunk: EXWV, 322 bytes
                       MMMGEXVOChunk: EXVO, 25 bytes
                               Exclusive: Exclusive [43 05 02 01 00 1F 40 78 40 80 80 60 00 01 00 00 00 00 02 71 00] (21 bytes)
               SequenceDataChunk: SEQU, 93 bytes
                       Tr.00 CC BankSelectLSB(32) Value=1
                       Tr.01 CC BankSelectLSB(32) Value=1
                       Tr.00 PC @0
                       Tr.01 PC @0
                       Tr.00 CC Expression(11) Value=127
                       Tr.01 CC Expression(11) Value=127
                       Tr.00 CC Expression(11) Value=27
                       Tr.00 Note F#3(54) Vel=127
                       Tr.01 CC Expression(11) Value=27
                       Tr.01 Note C3(48) Vel=127
                       Tr.00 CC Expression(11) Value=124
                             ..14 steps..
                       Tr.01 CC Expression(11) Value=124
                       Tr.00 CC Expression(11) Value=119
                             ..1 steps..
                       Tr.01 CC Expression(11) Value=119
                       Tr.00 CC Expression(11) Value=112
                             ..1 steps..
                       Tr.01 CC Expression(11) Value=112
                       Tr.00 CC Expression(11) Value=107
                             ..2 steps..
                       Tr.01 CC Expression(11) Value=107
                       Tr.00 CC Expression(11) Value=102
                             ..2 steps..
                       Tr.01 CC Expression(11) Value=102
                       Tr.00 CC Expression(11) Value=98
                             ..2 steps..
                       Tr.01 CC Expression(11) Value=98
                       Tr.00 CC Expression(11) Value=94
                             ..1 steps..
                       Tr.01 CC Expression(11) Value=94
                       Tr.-- NOP
                             ..1 steps..
       CRC = want: 0x745C, got: 0x745C (valid)```