Difference between revisions of "BCSV"
(Updated header offset info) |
(Clarification on field data) |
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| Line 1: | Line 1: | ||
| − | + | BCSV, known as '''B'''inary '''CSV''', stores information relating to general content in a compact CSV format | |
| − | + | == General == | |
| − | + | All information in this document is from Animal Crossing: New Horizons | |
| − | BCSV files contain a | + | BCSV files contain a header which defines the number of entries, the size of each entry block, and the fields each entry has, followed by a number of entries with context-specific data |
== Header == | == Header == | ||
| + | |||
| + | The header contains | ||
{|class="wikitable" | {|class="wikitable" | ||
| Line 13: | Line 15: | ||
! Offset !! Size !! Description | ! Offset !! Size !! Description | ||
|- | |- | ||
| − | | 0x00 || 0x4 || | + | | 0x00 || 0x4 || Entry count |
|- | |- | ||
| − | | 0x04 || 0x4 || | + | | 0x04 || 0x4 || Entry size |
|- | |- | ||
| − | | 0x08 || 0x2 || | + | | 0x08 || 0x2 || Field count |
|- | |- | ||
| 0x0A || 0x2 || Always '''0x0101''' | | 0x0A || 0x2 || Always '''0x0101''' | ||
| Line 23: | Line 25: | ||
| 0x0C || 0x4 || '''VSCB''' Magic | | 0x0C || 0x4 || '''VSCB''' Magic | ||
|- | |- | ||
| − | | 0x10 || | + | | 0x10 || 0x2 || Always '''0x1027''' |
| + | |- | ||
| + | | 0x12 || 0xA || Padding | ||
|- | |- | ||
| − | | 0x1C || 0x8* | + | | 0x1C || 0x8*Field count || Fields |
|} | |} | ||
| − | == | + | == Fields == |
| − | + | The fields are defined in the header as 2 sections; a data identifier and the relative offset in each entry | |
{|class="wikitable" | {|class="wikitable" | ||
| Line 38: | Line 42: | ||
| 0x00 || 0x4 || Data identifier | | 0x00 || 0x4 || Data identifier | ||
|- | |- | ||
| − | | 0x04 || 0x4 || Offset | + | | 0x04 || 0x4 || Offset |
|} | |} | ||
The data identifier determines what type of data the offset is pointing to. The meaning behind each identifier seems to rely on the context of the files content, generally, with only a small number of identifiers being reused in multiple files. In AC:NH there is a total 2048 unique identifiers, with only 191 being reused in multiple files. For a list of all identifiers in AC:NH and the files they are used in, see here https://pastebin.com/KnbnD1r8 | The data identifier determines what type of data the offset is pointing to. The meaning behind each identifier seems to rely on the context of the files content, generally, with only a small number of identifiers being reused in multiple files. In AC:NH there is a total 2048 unique identifiers, with only 191 being reused in multiple files. For a list of all identifiers in AC:NH and the files they are used in, see here https://pastebin.com/KnbnD1r8 | ||
| − | == | + | == Entries == |
| − | + | Entries always begin with their offset relative to the file start, and then contain the blocks data. Nearly every file seems to contain a field with type `0x54607054`, which is always a unique int16 for each entry, though the location of this field is not always the same | |
{|class="wikitable" | {|class="wikitable" | ||
| Line 53: | Line 57: | ||
| 0x00 || 0x4 || Offset relative to file start | | 0x00 || 0x4 || Offset relative to file start | ||
|- | |- | ||
| − | | 0x04 || || | + | | 0x04 || || Entry data |
|} | |} | ||
[[Category:File formats]] | [[Category:File formats]] | ||
Revision as of 13:54, 29 March 2020
BCSV, known as Binary CSV, stores information relating to general content in a compact CSV format
General
All information in this document is from Animal Crossing: New Horizons
BCSV files contain a header which defines the number of entries, the size of each entry block, and the fields each entry has, followed by a number of entries with context-specific data
Header
The header contains
| Offset | Size | Description |
|---|---|---|
| 0x00 | 0x4 | Entry count |
| 0x04 | 0x4 | Entry size |
| 0x08 | 0x2 | Field count |
| 0x0A | 0x2 | Always 0x0101 |
| 0x0C | 0x4 | VSCB Magic |
| 0x10 | 0x2 | Always 0x1027 |
| 0x12 | 0xA | Padding |
| 0x1C | 0x8*Field count | Fields |
Fields
The fields are defined in the header as 2 sections; a data identifier and the relative offset in each entry
| Offset | Size | Description |
|---|---|---|
| 0x00 | 0x4 | Data identifier |
| 0x04 | 0x4 | Offset |
The data identifier determines what type of data the offset is pointing to. The meaning behind each identifier seems to rely on the context of the files content, generally, with only a small number of identifiers being reused in multiple files. In AC:NH there is a total 2048 unique identifiers, with only 191 being reused in multiple files. For a list of all identifiers in AC:NH and the files they are used in, see here https://pastebin.com/KnbnD1r8
Entries
Entries always begin with their offset relative to the file start, and then contain the blocks data. Nearly every file seems to contain a field with type `0x54607054`, which is always a unique int16 for each entry, though the location of this field is not always the same
| Offset | Size | Description |
|---|---|---|
| 0x00 | 0x4 | Offset relative to file start |
| 0x04 | Entry data |
