RST0 (File Format) - Revision history

Gamebuster: /* Compression */

2024-03-11T04:48:35Z

‎Compression

2023-11-25T03:59:25Z

‎Compression

2023-11-25T03:50:02Z

‎Compression

2023-11-25T03:48:44Z

‎Compression: Breakthrough

2023-10-25T16:03:30Z

‎Compression: Update CRC algorithm link

2023-10-18T00:19:02Z

‎Compression

2023-10-18T00:18:38Z

‎Compression

2023-10-13T23:36:07Z

‎Header

2023-10-11T14:13:44Z

‎Tools

2023-10-11T01:54:54Z

‎Header

@@ Line 215: / Line 215: @@
 == Compression ==
-{{research|moderate|The compression algorithm used in Excitebots: Trick Racing is QuickLZ Version 1.0.0. https://web.archive.org/web/20130725190510/http://www.quicklz.com/
+{{research|moderate|The compression algorithm used in Excitebots: Trick Racing is QuickLZ Version 1.20. https://web.archive.org/web/20130725190510/http://www.quicklz.com/
 DKCR very likely uses QuickLZ, but the version used is unknown.}}

@@ Line 234: / Line 234: @@
 | u32
 | '''CRC'''
-| A CRC value. For Excitebots, the algorithm used can be found here [https://github.com/TheGameCommunity/Excite/blob/2f944d4e1f6ea2cb4fe91f406c00889c36198697/src/main/java/com/thegamecommunity/excite/modding/game/propritary/crc/CRCTester.java]. Other games probably use a similar but different algorithm.
+| A CRC value. For Excitebots, the algorithm used can be found here [https://github.com/TheGameCommunity/Excite/blob/2f944d4e1f6ea2cb4fe91f406c00889c36198697/src/main/java/com/thegamecommunity/excite/modding/game/propritary/crc/CRCTester.java]. Other games may use a similar but different algorithm.
 |-
 | 0x8

@@ Line 215: / Line 215: @@
 == Compression ==
-NOTE: The compression algorithm used in Excitebots: Trick Racing is QuickLZ Version 1.0.0. https://web.archive.org/web/20130725190510/http://www.quicklz.com/
+{{research|moderate|The compression algorithm used in Excitebots: Trick Racing is QuickLZ Version 1.0.0. https://web.archive.org/web/20130725190510/http://www.quicklz.com/
-DKCR very likely uses QuickLZ, but the version used is unknown.
+DKCR very likely uses QuickLZ, but the version used is unknown.}}
 RST0 files use a custom [https://en.wikipedia.org/wiki/Run-length_encoding run-length encoding] compression algorithm. The compressed data begins with a 0x19-byte header before the actual compressed data begins. The header is actually two separate headers - one for the entire compressed section, comprising the first 0x10 bytes, and then one for the compressed data, comprising the last 0x9 bytes, which is why there's some redundant values included.

← Older revision		Revision as of 03:48, 25 November 2023
Line 214:		Line 214:

	== Compression ==		== Compression ==
		+
		+	NOTE: The compression algorithm used in Excitebots: Trick Racing is QuickLZ Version 1.0.0. https://web.archive.org/web/20130725190510/http://www.quicklz.com/
		+	DKCR very likely uses QuickLZ, but the version used is unknown.

	RST0 files use a custom [https://en.wikipedia.org/wiki/Run-length_encoding run-length encoding] compression algorithm. The compressed data begins with a 0x19-byte header before the actual compressed data begins. The header is actually two separate headers - one for the entire compressed section, comprising the first 0x10 bytes, and then one for the compressed data, comprising the last 0x9 bytes, which is why there's some redundant values included.		RST0 files use a custom [https://en.wikipedia.org/wiki/Run-length_encoding run-length encoding] compression algorithm. The compressed data begins with a 0x19-byte header before the actual compressed data begins. The header is actually two separate headers - one for the entire compressed section, comprising the first 0x10 bytes, and then one for the compressed data, comprising the last 0x9 bytes, which is why there's some redundant values included.

@@ Line 231: / Line 231: @@
 | u32
 | '''CRC'''
-| A CRC value. For Excitebots, the algorithm used can be found here [https://github.com/TheGameCommunity/ExciteBot/blob/4157071b2a0265fe37da2a8fb3585b79ceb593f3/src/main/java/com/gamebuster19901/excite/game/propritary/crc/CRCTester.java#L1]. Other games probably use a similar but different algorithm.
+| A CRC value. For Excitebots, the algorithm used can be found here [https://github.com/TheGameCommunity/Excite/blob/2f944d4e1f6ea2cb4fe91f406c00889c36198697/src/main/java/com/thegamecommunity/excite/modding/game/propritary/crc/CRCTester.java]. Other games probably use a similar but different algorithm.
 |-
 | 0x8

@@ Line 230: / Line 230: @@
 | 0x4
 | u32
-| {{unknown|Unknown}}
+| ```CRC```
-| Possibly a hash of the compressed data?
+| A CRC value. For Excitebots, the algorithm used can be found here [https://github.com/TheGameCommunity/ExciteBot/blob/4157071b2a0265fe37da2a8fb3585b79ceb593f3/src/main/java/com/gamebuster19901/excite/game/propritary/crc/CRCTester.java#L1]. Other games probably use a similar but different algorithm.
 |-
 | 0x8

@@ Line 41: / Line 41: @@
 |-
 | 0x14
-| u32
+| i32
 | '''Unix timestamp'''
 | Corresponds to the last edit of the file contents by the developers. For games with a separate TOC file, this must match the timestamp in the TOC file or the game will intentionally crash.

@@ Line 325: / Line 325: @@
 == Tools ==
-* [https://www.dropbox.com/s/fvxzkflshjn1rd5/RSTExtract.rar?dl=0 RSTExtract] by Aruki will unpack and decompress RST0 archives,
+* [https://www.dropbox.com/s/fvxzkflshjn1rd5/RSTExtract.rar?dl=0 RSTExtract] by Aruki will unpack and decompress Donkey Kong Country Returns 3D RST0 archives,
 [[Category:File Formats]]
 [[Category:Donkey Kong Country Returns 3D]]

@@ Line 33: / Line 33: @@
 | u32
 | {{unknown|Unknown}}
-| Compression-related. Always 0 on uncompressed files and 2 on compressed files. No idea what the number means though; maybe it's a "compression type" enum? In Excitebots, this value can be 1.
+| Compression-related. In DKCR: Always 0 on uncompressed files and 2 on compressed files. No idea what the number means though; maybe it's a "compression type" enum? In Excitebots, this value is either 1 or 3.
 |-
 | 0x10