Difference between revisions of "BMG files"
(→MID section: Updated with what (little) I know from the SZS Modifier) |
Emily Daemon (talk | contribs) m (typo: endianess -> endianness) |
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| − | Stores strings used in games for localization. Can be found in | + | Stores strings used in games for localization. Can be found in many first-party games. |
| − | The file structure is composed by a header and sections. The essential sections are INF and DAT. The MID section can also be found on Wii Fit Plus disc, | + | The file structure is composed by a header and sections. The essential sections are INF and DAT. The MID section can also be found on Wii Fit Plus disc, and it is probably for message IDs. |
| − | + | [https://szs.wiimm.de/download.html Wiimms SZS Tools] can encode and decode BMGs. | |
| − | The | + | The endianness is big endian. The Nintendo DS uses little endian. |
=== BMG header === | === BMG header === | ||
| Line 31: | Line 31: | ||
| 0x000C | | 0x000C | ||
| 4 | | 4 | ||
| − | | Number of sections | + | | Number of sections |
|- | |- | ||
| 0x0010 | | 0x0010 | ||
| − | | | + | | 1 |
| − | | | + | | Encoding: 1=CP1252, 2=UTF-16/be, 3=Shift-JIS, 4=UTF-8 |
|- | |- | ||
| − | | | + | | 0x0011 |
| − | | | + | | 15 |
| Padding? | | Padding? | ||
|} | |} | ||
| Line 155: | Line 155: | ||
| Entry #... | | Entry #... | ||
|} | |} | ||
| + | |||
| + | == Other sources == | ||
| + | * Mario Kart Custom Track Wiiki: http://wiki.tockdom.com/wiki/BMG | ||
| + | |||
[[Category:File formats]] | [[Category:File formats]] | ||
Latest revision as of 17:54, 23 January 2025
Stores strings used in games for localization. Can be found in many first-party games.
The file structure is composed by a header and sections. The essential sections are INF and DAT. The MID section can also be found on Wii Fit Plus disc, and it is probably for message IDs.
Wiimms SZS Tools can encode and decode BMGs.
The endianness is big endian. The Nintendo DS uses little endian.
BMG header
The header is 32 bytes long. Here's a description of it:
| Offset | Size | Description |
|---|---|---|
| 0x0000 | 4 | "MESG" (0x4D455347) |
| 0x0004 | 4 | "bmg1" (0x626D6731) |
| 0x0008 | 4 | File size |
| 0x000C | 4 | Number of sections |
| 0x0010 | 1 | Encoding: 1=CP1252, 2=UTF-16/be, 3=Shift-JIS, 4=UTF-8 |
| 0x0011 | 15 | Padding? |
INF section
It comes just after the BMG header. It contains information (like pointers) about the messages.
INF header
| Offset | Size | Description |
|---|---|---|
| 0x0000 | 4 | "INF1" (0x494E4631) |
| 0x0004 | 4 | Size of this section (bytes from section beginning) |
| 0x0008 | 2 | Number of messages |
| 0x000A | 2 | Size of each INF data (bytes) |
| 0x000C | 4 | Padding? |
INF data
For each message, there is a INF data about it. At Wii Fit, there is just the message offset. At Wii Fit Plus, there is two another fields.
| Offset | Size | Description |
|---|---|---|
| 0x0000 | 4 | Offset to the message (after DAT section header) |
| 0x0004 | 4 | Some flags? (0x00640000 seems to be "normal messages", 0x006E0000 for "menu choices" ...) |
| 0x0008 | 4 | ? |
DAT section
It contains just header and the messages themselves.
| Offset | Size | Description |
|---|---|---|
| 0x0000 | 4 | "DAT1" (0x44415431) |
| 0x0004 | 4 | Section size (bytes from section beginning) |
| 0x0008 | - | Messages |
MID section
This section is probably message IDs. There appears to be one for each message and these can presumably be used by the wii to identify each message.
| Offset | Size | Description |
|---|---|---|
| 0x0000 | 4 | "MID1" (0x4D494431) |
| 0x0004 | 4 | Section size (bytes from section beginning) |
| 0x0008 | 2 | Number of entries |
| 0x000A | 2 | ? |
| 0x000C | 4 | Padding? |
| 0x0010 | 4 | Entry #1 |
| 0x0014 | 4 | Entry #2 |
| ... | 4 | Entry #... |
Other sources
- Mario Kart Custom Track Wiiki: http://wiki.tockdom.com/wiki/BMG