17
edits
Changes
DATA chunk information
Line 5:
Line 5:
|-
−| 0x0008
−| ADPC entry count * Channel count * 4
−| ADPC entries
All the offsets are absolute (from beginning of file), except where mentioned.<br/>
All the offsets are absolute (from beginning of file), except where mentioned.<br/>
All the sizes are in bytes, except where mentioned.<br/>
All the sizes are in bytes, except where mentioned.<br/>
+Each chunk is padded to a multiple of 0x20.<br/>
=== BRSTM header ===
=== BRSTM header ===
Line 429:
Line 430:
Each entry in the table contains the final two samples from the preceding block.<br/>
Each entry in the table contains the final two samples from the preceding block.<br/>
The first entry in the table contains the history samples contained in part 3 of the HEAD chunk.
The first entry in the table contains the history samples contained in part 3 of the HEAD chunk.
+
+==== Header ====
{| class="wikitable"
{| class="wikitable"
Line 443:
Line 446:
| 4
| 4
| Length of entire ADPC section.
| Length of entire ADPC section.
−|}
|}
Line 473:
Line 472:
| Channel 1 History sample 2
| Channel 1 History sample 2
|-
|-
−| 0x0008
+| ...
| 2
| 2
| Channel N History sample 1
| Channel N History sample 1
|-
|-
−| 0x000A
+| ...
| 2
| 2
| Channel N History sample 2
| Channel N History sample 2
Line 485:
Line 484:
The DATA chunk contains ADPCM sound data.
The DATA chunk contains ADPCM sound data.
+
+==== Header ====
+{| class="wikitable"
+|-
+! Offset
+! Size
+! Description
+|-
+| 0x0000
+| 4
+| "DATA" (0x44415441)
+|-
+| 0x0004
+| 4
+| Length of entire DATA section.
+|-
+| 0x0008
+| 4
+| Number of padding samples between header and ADPCM data? Always 0x18
+|-
+| 0x000C
+| 0x14
+| Padding (0x00)
+|}
+
+==== ADPCM Data ====
+The ADPCM audio data is interlaced per channel according to the block sizes specified in the header.
+
+{| class="wikitable"
+|-
+! Description
+! Size
+|-
+| Channel 0 block 0
+| Block size
+|-
+| Channel 1 block 0
+| Block size
+|-
+| Channel 0 block 1
+| Block size
+|-
+| Channel 1 block 1
+| Block size
+|-
+| ...
+|
+|-
+| Channel 0 final block
+| Final block size
+|-
+| Channel 1 final block
+| Final block size
+|}
[[Category:File formats]]
[[Category:File formats]]