Difference between revisions of "BCWAV"
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Line 20: | Line 20: | ||
| 0x004 || 2 || Endianness (0xFEFF = little, 0xFFFE = big) | | 0x004 || 2 || Endianness (0xFEFF = little, 0xFFFE = big) | ||
|- | |- | ||
− | | 0x006 || 2 || Header Size (0x40 due to [[ | + | | 0x006 || 2 || Header Size (0x40 due to [[#Info Block|Info Block]] alignment) |
|- | |- | ||
| 0x008 || 4 || Version (0x02010000) | | 0x008 || 4 || Version (0x02010000) | ||
Line 30: | Line 30: | ||
| 0x012 || 2 || Reserved | | 0x012 || 2 || Reserved | ||
|- | |- | ||
− | | 0x014 || 12 || [[ | + | | 0x014 || 12 || [[#Info Block|Info Block]] [[#Sized Reference|Sized Reference]] (Offset relative to start of file) |
|- | |- | ||
− | | 0x020 || 12 || [[ | + | | 0x020 || 12 || [[#Data Block|Data Block]] [[#Sized Reference|Sized Reference]] (Offset relative to start of file) |
|} | |} | ||
Line 52: | Line 52: | ||
! MAGIC !! TYPE | ! MAGIC !! TYPE | ||
|- | |- | ||
− | | INFO || [[ | + | | INFO || [[#Info Block|Info Block]] |
|- | |- | ||
− | | DATA || [[ | + | | DATA || [[#Data Block|Data Block]] |
|} | |} | ||
Line 63: | Line 63: | ||
! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 8 || [[ | + | | 0x000 || 8 || [[#Block Header|Block Header]] |
|- | |- | ||
− | | 0x008 || 1 || [[ | + | | 0x008 || 1 || [[#Encoding|Encoding]] |
|- | |- | ||
| 0x009 || 1 || Loop (0 = don't loop, 1 = loop) | | 0x009 || 1 || Loop (0 = don't loop, 1 = loop) | ||
Line 79: | Line 79: | ||
| 0x018 || 4 || Reserved | | 0x018 || 4 || Reserved | ||
|- | |- | ||
− | | 0x01C || 4 + Count * 8 || [[ | + | | 0x01C || 4 + Count * 8 || [[#Channel Info|Channel Info]] [[#Reference Table|Reference Table]] |
|} | |} | ||
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! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 8 || [[ | + | | 0x000 || 8 || [[#Block Header|Block Header]] |
|- | |- | ||
− | | 0x008 || [[ | + | | 0x008 || [[#Block Header|Block Header]] Size - 8 || Data |
|} | |} | ||
Line 118: | Line 118: | ||
! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 8 || Samples [[ | + | | 0x000 || 8 || Samples [[#Reference|Reference]] (Offset relative to [[#Data Block|Data Block]] Data field) |
|- | |- | ||
− | | 0x008 || 8 || ADPCM Info [[ | + | | 0x008 || 8 || ADPCM Info [[#Reference|Reference]] (Offset relative to [[#Channel Info|Channel Info]] start) |
|- | |- | ||
| 0x010 || 4 || Reserved | | 0x010 || 4 || Reserved | ||
Line 131: | Line 131: | ||
! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 32 || [[ | + | | 0x000 || 32 || [[#DSP ADPCM Param|Param]] |
|- | |- | ||
− | | 0x020 || 6 || [[ | + | | 0x020 || 6 || [[#DSP ADPCM Context|Context]] |
|- | |- | ||
− | | 0x026 || 6 || Loop [[ | + | | 0x026 || 6 || Loop [[#DSP ADPCM Context|Context]] |
|- | |- | ||
| 0x02C || 2 || Padding | | 0x02C || 2 || Padding | ||
Line 170: | Line 170: | ||
! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 4 || [[ | + | | 0x000 || 4 || [[#IMA ADPCM Context|Context]] |
|- | |- | ||
− | | 0x004 || 4 || Loop [[ | + | | 0x004 || 4 || Loop [[#IMA ADPCM Context|Context]] |
|} | |} | ||
Line 196: | Line 196: | ||
| 0x000 || 4 || Count | | 0x000 || 4 || Count | ||
|- | |- | ||
− | | 0x004 || Count * 8 || [[ | + | | 0x004 || Count * 8 || [[#Reference|References]] (Offsets relative to Count field) |
|} | |} | ||
Line 205: | Line 205: | ||
! OFFSET !! SIZE !! DESCRIPTION | ! OFFSET !! SIZE !! DESCRIPTION | ||
|- | |- | ||
− | | 0x000 || 8 || [[ | + | | 0x000 || 8 || [[#Reference|Reference]] |
|- | |- | ||
| 0x008 || 4 || Size | | 0x008 || 4 || Size | ||
Line 229: | Line 229: | ||
! ID !! TYPE | ! ID !! TYPE | ||
|- | |- | ||
− | | 0x0300 || [[ | + | | 0x0300 || [[#DSP ADPCM Info|DSP ADPCM Info]] |
|- | |- | ||
− | | 0x0301 || [[ | + | | 0x0301 || [[#IMA ADPCM Info|IMA ADPCM Info]] |
|- | |- | ||
− | | 0x1F00 || [[ | + | | 0x1F00 || [[#Data_Block|Sample Data]] |
|- | |- | ||
− | | 0x7000 || [[ | + | | 0x7000 || [[#Info Block|Info Block]] |
|- | |- | ||
− | | 0x7001 || [[ | + | | 0x7001 || [[#Data Block|Data Block]] |
|- | |- | ||
− | | 0x7100 || [[ | + | | 0x7100 || [[#Channel Info|Channel Info]] |
|} | |} |
Revision as of 03:28, 10 December 2015
This document is about the format of Banner's CTR Wave files (BCWAV).
The structure is very similar to Microsoft's Wave file.
Banner CWAV total channels must be 2, and the length of the audio in seconds must be 3 seconds or less.
Overview
Microsoft's WAV structure is RIFF Header which defines the data inside which is WAVE, then the media player expects a "fmt " chunk and a "data" chunk. Nintendo's format uses a CWAV header (no need for a general structure for media, only wave), which points to an INFO struct (the equivalent to fmt) and a DATA struct (the equivalent to data).
Header
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 4 | Magic (CWAV) |
0x004 | 2 | Endianness (0xFEFF = little, 0xFFFE = big) |
0x006 | 2 | Header Size (0x40 due to Info Block alignment) |
0x008 | 4 | Version (0x02010000) |
0x00C | 4 | File Size |
0x010 | 2 | Number of Blocks (2) |
0x012 | 2 | Reserved |
0x014 | 12 | Info Block Sized Reference (Offset relative to start of file) |
0x020 | 12 | Data Block Sized Reference (Offset relative to start of file) |
Block Header
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 4 | Magic |
0x004 | 4 | Size |
Block Types
MAGIC | TYPE |
---|---|
INFO | Info Block |
DATA | Data Block |
Info Block
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 8 | Block Header |
0x008 | 1 | Encoding |
0x009 | 1 | Loop (0 = don't loop, 1 = loop) |
0x00A | 2 | Padding |
0x00C | 4 | Sample Rate |
0x010 | 4 | Loop Start Frame |
0x014 | 4 | Loop End Frame |
0x018 | 4 | Reserved |
0x01C | 4 + Count * 8 | Channel Info Reference Table |
The info block is aligned to 0x20 bytes.
Data Block
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 8 | Block Header |
0x008 | Block Header Size - 8 | Data |
The data block is aligned to 0x20 bytes, as well as the data field's actual sample data.
Encoding
VALUE | DESCRIPTION |
---|---|
0 | PCM8 |
1 | PCM16 |
2 | DSP ADPCM |
3 | IMA ADPCM |
Channel Info
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 8 | Samples Reference (Offset relative to Data Block Data field) |
0x008 | 8 | ADPCM Info Reference (Offset relative to Channel Info start) |
0x010 | 4 | Reserved |
DSP ADPCM Info
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 32 | Param |
0x020 | 6 | Context |
0x026 | 6 | Loop Context |
0x02C | 2 | Padding |
DSP ADPCM Param
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 32 | 16-bit Coefficients |
DSP ADPCM Context
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 1 | 4-bit Predictor + 4-bit Scale |
0x001 | 1 | Reserved |
0x002 | 2 | Previous Sample |
0x004 | 2 | Second Previous Sample |
IMA ADPCM Info
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 4 | Context |
0x004 | 4 | Loop Context |
IMA ADPCM Context
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 2 | Data |
0x002 | 1 | Table Index |
0x003 | 1 | Padding |
Reference Table
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 4 | Count |
0x004 | Count * 8 | References (Offsets relative to Count field) |
Sized Reference
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 8 | Reference |
0x008 | 4 | Size |
Reference
OFFSET | SIZE | DESCRIPTION |
---|---|---|
0x000 | 2 | Type ID |
0x002 | 2 | Padding |
0x004 | 4 | Offset ("null" = 0xFFFFFFFF) |
Reference Types
ID | TYPE |
---|---|
0x0300 | DSP ADPCM Info |
0x0301 | IMA ADPCM Info |
0x1F00 | Sample Data |
0x7000 | Info Block |
0x7001 | Data Block |
0x7100 | Channel Info |