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| 0x000 || 4 || Magic (CWAV)
| 0x000 || 4 || Magic (CWAV)
|-
|-
| 0x004 || 2 || Endianess (0xFEFF=LE / 0xFFFE=BE)
| 0x004 || 2 || Endianness (0xFEFF = little, 0xFFFE = big)
|-
|-
| 0x006 || 2 || Struct Length
| 0x006 || 2 || Header Size (0x40)
|-
|-
| 0x008 || 4 || Unknown 0
| 0x008 || 4 || Version (0x02010000)
|-
|-
| 0x00C || 4 || File's size
| 0x00C || 4 || File Size
|-
|-
| 0x010 || 4 || Number of chunks (= 2 (INFO & DATA))
| 0x010 || 2 || Number of Blocks (2)
|-
|-
| 0x014 || 4 || Info Chunk Flags (0x7000)
| 0x012 || 2 || Reserved
|-
|-
| 0x018 || 4 || Info Chunk Offset
| 0x014 || 12 || [[BCWAV#Info Block|Info Block]] [[BCWAV#Sized Reference|Sized Reference]] (Offset relative to start of file)
|-
|-
| 0x01C || 4 || Info Chunk Length
| 0x020 || 12 || [[BCWAV#Data Block|Data Block]] [[BCWAV#Sized Reference|Sized Reference]] (Offset relative to start of file)
|-
|-
| 0x020 || 4 || Data Chunk Flags (0x7000)
| 0x02C || 20 || Padding
|}
 
=== Block Header ===
 
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
| 0x000 || 4 || Magic
|-
| 0x004 || 4 || Size
|}
 
==== Block Types ====
 
{| class="wikitable" border="1"
|-
|-
| 0x024 || 4 || Data Chunk Offset
! MAGIC !! TYPE
|-
|-
| 0x028 || 4 || Data Chunk Length
| INFO || [[BCWAV#Info Block|Info Block]]
|-
|-
| 0x02C || 0x20 || Reserved (for more chunks offsets)
| DATA || [[BCWAV#Data Block|Data Block]]
|}
|}


=== INFO Header ===
=== Info Block ===


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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! OFFSET !! SIZE !!  DESCRIPTION
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x000 || 4 || Magic (INFO)
| 0x000 || 8 || [[BCWAV#Block Header|Block Header]]
|-
|-
| 0x004 || 4 || Length
| 0x008 || 1 || [[BCWAV#Encoding|Encoding]]
|-
|-
| 0x008 || 4 || Type (must be less than 4)
| 0x009 || 1 || Loop (0 = don't loop, 1 = loop)
|-
| 0x00A || 2 || Padding
|-
|-
| 0x00C || 4 || Sample Rate
| 0x00C || 4 || Sample Rate
|-
|-
| 0x010 || 4 || Unknown 1
| 0x010 || 4 || Loop Start Frame
|-
| 0x014 || 4 || Loop End Frame
|-
| 0x018 || 4 || Reserved
|-
| 0x01C || 4 + Count * 8 || [[BCWAV#Channel Info|Channel Info]] [[BCWAV#Reference Table|Reference Table]]
|}
 
=== Data Block ===
 
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
| 0x000 || 8 || [[BCWAV#Block Header|Block Header]]
|-
| 0x008 || [[BCWAV#Block Header|Block Header]] Size - 8 || Data
|}
 
=== Encoding ===
 
{| class="wikitable" border="1"
|-
! VALUE !! DESCRIPTION
|-
| 0 || PCM8
|-
| 1 || PCM16
|-
| 2 || DSP ADPCM
|-
| 3 || IMA ADPCM
|}
 
=== Channel Info ===
 
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
| 0x000 || 8 || Samples [[BCWAV#Reference|Reference]] (Offset relative to [[BCWAV#Data Block|Data Block]] Data field)
|-
| 0x008 || 8 || ADPCM Info [[BCWAV#Reference|Reference]]  (Offset relative to [[BCWAV#Channel Info|Channel Info]] start)
|-
| 0x010 || 4 || Reserved
|}
 
=== DSP ADPCM Info ===
 
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
| 0x000 || 32 || [[BCWAV#DSP ADPCM Param|Param]]
|-
| 0x020 || 6 || [[BCWAV#DSP ADPCM Context|Context]]
|-
| 0x026 || 6 || Loop [[BCWAV#DSP ADPCM Context|Context]]
|}
 
=== DSP ADPCM Param ===
 
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x014 || 4 || Total samples
| 0x000 || 32 || 16-bit Coefficients
|}
 
=== DSP ADPCM Context ===
 
{| class="wikitable" border="1"
|-
|-
| 0x018 || 4 || Unknown 2
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x01C || 4 || Total Channels
| 0x000 || 1 || 4-bit Predictor + 4-bit Scale
|-
|-
| 0x020 || X || The Channels' Data Pointers
| 0x001 || 1 || Reserved
|-
|-
| X || X || The Channels' Data
| 0x002 || 2 || Previous Sample
|-
| 0x004 || 2 || Second Previous Sample
|}
|}


  * The channels data pointers are pointers to another struct that points to the actual data (this stucture has flags as well)
=== IMA ADPCM Info ===


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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! OFFSET !! SIZE !!  DESCRIPTION
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x000 || 4 || Flags
| 0x000 || 4 || [[BCWAV#IMA ADPCM Context|Context]]
|-
|-
| 0x004 || 4 || Offset (from 0x5C, INFO's channels field)
| 0x004 || 4 || Loop [[BCWAV#IMA ADPCM Context|Context]]
|}
|}


  * The channels data are pointers to the actual data (this stucture has flags as well)
=== IMA ADPCM Context ===


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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! OFFSET !! SIZE !!  DESCRIPTION
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x000 || 4 || Flags
| 0x000 || 2 || Data
|-
| 0x002 || 1 || Table Index
|-
| 0x003 || 1 || Padding
|}
 
=== Reference Table ===
 
{| class="wikitable" border="1"
|-
|-
| 0x004 || 4 || Offset (inside the DATA block data)
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x008 || 4 || FFs (0xFFFFFFFF)
| 0x000 || 4 || Count
|-
|-
| 0x00C || 4 || Padding (Zero)
| 0x004 || Count * 8 || [[BCWAV#Reference|References]] (Offsets relative to Count field)
|}
|}


=== Sized Reference ===
{| class="wikitable" border="1"
|-
! OFFSET !! SIZE !!  DESCRIPTION
|-
| 0x000 || 8 || [[BCWAV#Reference|Reference]]
|-
| 0x008 || 4 || Size
|}


=== DATA Header ===
=== Reference ===


{| class="wikitable" border="1"
{| class="wikitable" border="1"
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! OFFSET !! SIZE !!  DESCRIPTION
! OFFSET !! SIZE !!  DESCRIPTION
|-
|-
| 0x000 || 4 || Magic (DATA)
| 0x000 || 2 || Type ID
|-
| 0x002 || 2 || Padding
|-
| 0x004 || 4 || Offset
|}
 
==== Reference Types ====
 
{| class="wikitable" border="1"
|-
! ID !! TYPE
|-
| 0x0300 || [[BCWAV#DSP ADPCM Info|DSP ADPCM Info]]
|-
| 0x0301 || [[BCWAV#IMA ADPCM Info|IMA ADPCM Info]]
|-
| 0x7000 || [[BCWAV#Info Block|Info Block]]
|-
| 0x7001 || [[BCWAV#Data Block|Data Block]]
|-
|-
| 0x004 || 4 || Length
| 0x7100 || [[BCWAV#Channel Info|Channel Info]]
|}
|}
Retrieved from "https://www.3dbrew.org/wiki/BCWAV"