CSMP (File Format): Difference between revisions

CSMP (File Format) (view source)

Revision as of 21:08, 25 January 2015

343 bytes added , 25 January 2015

Restructuring a little and adding some info

VisualWikitext

Anonymous user

>Aruki

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 __TOC__
-== Header ==
+== Format ==
-This is the header structure found in Metroid Prime 3 and Donkey Kong Country Returns; Tropical Freeze's seems to be a bit different. The file can be read using a simple while loop; each chunk sets its own size.
+CSMP files are made up of a number of data chunks. Since not every file always has every chunk, the best way to read a CSMP file is to use a while loop to check the chunk headers and parse their contents until you reach the end of the file.
+=== Header ===
+This is the header structure found in Metroid Prime 3 and Donkey Kong Country Returns; Tropical Freeze's is a bit different.
 {{todo|We've had success getting audio out of Tropical Freeze, crediar mentioned ddspadpcm being used in Tropical Freeze. What is it? And can we find any information on it?}}
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 |}
-== Chunk ==
+=== Chunk Header ===
+Every chunk begins with this header; it contains a brief data type identifier and a size.
 {|class="wikitable"
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 |-
 |0x8+N
-|colspan=2|End of chunk (usually, subtract 4 when the chunk type is equal to 0x44415441 ["DATA"])
+|colspan=2|End of chunk
 |}
-== Chunk Types ==
-The structure for each chunk are as follows:
 === NAME ===
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 === PAD ===
-Padding; just skip this chunk using its size value.
+This chunk is just padded with 0xFF; usually contains 0x14 bytes.
 === DATA ===
-Refer to the [[DSP (File Format)|DSP]] page for details.
+The DATA section essentially just embeds a standard DSP, including the full header and ADPCM audio data. Refer to the [[DSP (File Format)|DSP]] page for details. Note that for some reason, the DATA chunk is often 4 bytes smaller than its size indicates.
 [[Category:File Formats]]