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== Overview ==
== Overview ==
The BCSAR (CTR Sound ARchive) format is the 3DS's equivalent of the Wii's BRSAR format. They're not the same structures, though, but they do have the same purpose.
The BCSAR (Binary CTR Sound ARchive) format is the 3DS's equivalent of the Wii's BRSAR format. They're not the same structures, though, but they do have the same purpose.
BCSAR are located in the RomFS, this is usually stored under "romfs:/sound/<name>.bcsar". This contains various audio formats, such as CSTM, CWSD, and CWAV.
BCSAR are located in the RomFS, this is usually stored under "romfs:/sound/<name>.bcsar". This contains various audio formats, such as CSTM, CWSD, CSEQ, and CWAV.
== BCSAR Header ==
== BCSAR Header ==
| 0x14
| 0x14
| 0x4
| 0x4
| Partition header length [same for each partition? (ie STRG,INFO,and FILE header lengths)]
| STRG partition reference ID? (Always 0x2000)
|-
|-
| 0x18
| 0x18
| 0x20
| 0x20
| 0x4
| 0x4
| Unknown (always 0x01200000?)
| INFO partition reference ID? (Always 0x2001)
|-
|-
| 0x24
| 0x24
| 0x4
| 0x4
| Length of INFO partition
| Length of INFO partition
|-
| 0x2C
| 0x4
| Main FILE partition reference ID? (Always 0x2002)
|-
|-
| 0x30
| 0x30
| 0x8
| 0x8
| 0x4
| 0x4
| Unknown magic 0x2100
| Audio Table Reference ID (0x2100)
|-
|-
| 0xC
| 0xC
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the Audio Table
|-
|-
| 0x10
| 0x10
| 0x4
| 0x4
| Unknown magic 0x2104
| Set Table Reference ID (0x2104)
|-
|-
| 0x14
| 0x14
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the Set Table
|-
|-
| 0x18
| 0x18
| 0x4
| 0x4
| Unknown magic 0x2101
| Bank Table Reference ID (0x2101)
|-
|-
| 0x1C
| 0x1C
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the Bank Table
|-
|-
| 0x20
| 0x20
| 0x4
| 0x4
| Unknown magic 0x2103
| WAV Archive Table Reference ID (0x2103)
|-
|-
| 0x24
| 0x24
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the WAV Archive Table
|-
|-
| 0x28
| 0x28
| 0x4
| 0x4
| Unknown magic 0x2105
| Group Table Reference ID (0x2105)
|-
|-
| 0x2C
| 0x2C
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the Group Table
|-
|-
| 0x30
| 0x30
| 0x4
| 0x4
| Unknown magic 0x2102
| Player Table Reference ID (0x2102)
|-
|-
| 0x34
| 0x34
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to Player Table
|-
|-
| 0x38
| 0x38
| 0x4
| 0x4
| Unknown magic 0x2106
| FILE Table Reference ID (0x2106)
|-
|-
| 0x3C
| 0x3C
| 0x4
| 0x4
| This + 8 points to unknown
| This + 8 points to the FILE Table
|-
|-
| 0x40
| 0x40
| 0x4
| 0x4
| Unknown magic 0x220B
| Unknown Table Reference ID (0x220B)
|-
|-
| 0x44
| 0x44
| 0x4
| 0x4
| Unknown
| Unknown
|-
|}
===== Table IDs =====
{| class="wikitable" border="1"
|-
! ID
! NAME
|-
| 0x2200
| Audio Table
|-
| 0x2204
| Set Table
|-
| 0x2206
| Bank Table
|-
| 0x2207
| WAV Archive Table
|-
| 0x2208
| Group Table
|-
| 0x2208
| Player Table
|-
| 0x220A
| FILE Table
|-
|-
|}
|}
== Tools ==
== Tools ==
* vgmtoolbox's Advanced Cutter/Offset Finder tool can extract BCWAVs without filenames
* vgmtoolbox's Advanced Cutter/Offset Finder tool can extract BCWAVs without filenames
* [https://github.com/soneek/3DSUSoundArchiveTool 3DSUSoundArchiveTool] reference implementation of CSAR extraction