IPAK Files - Revision history

Aerosoul94 at 01:20, 4 July 2015

2015-07-04T01:20:50Z

← Older revision		Revision as of 01:20, 4 July 2015
Line 4:		Line 4:

	== Structure ==		== Structure ==
	~~Thanks to kokole for the structure.~~
	<syntaxhighlight lang="cpp">		<syntaxhighlight lang="cpp">
	struct IPakHeader		struct IPakHeader

Aerosoul94 at 23:17, 20 December 2014

2014-12-20T23:17:49Z

← Older revision		Revision as of 23:17, 20 December 2014
Line 5:		Line 5:
	== Structure ==		== Structure ==
	Thanks to kokole for the structure.		Thanks to kokole for the structure.
			<syntaxhighlight lang="cpp">
	struct IPakHeader		struct IPakHeader
	{		{
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	unsigned int commands[31]; //(depending on endian) blockSize = (info & 0xFFFF); , compressedFlag = info >> 24;		unsigned int commands[31]; //(depending on endian) blockSize = (info & 0xFFFF); , compressedFlag = info >> 24;
	};		};
			</syntaxhighlight>
	== Decompression Methods ==		== Decompression Methods ==

Kokole: /* Structure */

2014-12-20T19:35:05Z

Structure

← Older revision		Revision as of 19:35, 20 December 2014
Line 8:		Line 8:
	struct IPakHeader		struct IPakHeader
	{		{
	:unsigned int magic;		unsigned int magic;
	: unsigned int version;		unsigned int version;
	: unsigned int size;		unsigned int size;
	: unsigned int sectionCount;		unsigned int sectionCount;
	};		};

Kokole: /* Structure */

2014-12-20T19:34:47Z

Structure

← Older revision		Revision as of 19:34, 20 December 2014
Line 8:		Line 8:
	struct IPakHeader		struct IPakHeader
	{		{
	unsigned int magic;		:unsigned int magic;
	unsigned int version;		: unsigned int version;
	unsigned int size;		: unsigned int size;
	unsigned int sectionCount;		: unsigned int sectionCount;
	};		};

Kokole: /* Structure */

2014-12-20T19:32:15Z

Structure

← Older revision		Revision as of 19:32, 20 December 2014
Line 5:		Line 5:
	== Structure ==		== Structure ==
	Thanks to kokole for the structure.		Thanks to kokole for the structure.

	struct IPakHeader		struct IPakHeader
	{		{

Kokole: /* Structure */

2014-12-20T19:30:59Z

Structure

← Older revision		Revision as of 19:30, 20 December 2014
Line 5:		Line 5:
	== Structure ==		== Structure ==
	Thanks to kokole for the structure.		Thanks to kokole for the structure.
	struct ~~ipak_header_t~~		struct IPakHeader
	{		{
	~~char identifier[4]~~; ~~// "IPAK"~~		unsigned int magic;
	unsigned int version; ~~//0x50000~~		unsigned int version;
	unsigned int ~~fileSize~~;		unsigned int size;
	unsigned int sectionCount;		unsigned int sectionCount;
	};		};

	struct ~~section_t~~		struct IPakSection
	{		{
	unsigned int ~~sectionIndex~~; //enum 0x1 = info, 0x2 = data		unsigned int type; //enum 0x1 = info, 0x2 = data
	unsigned int ~~sectionStart~~;		unsigned int offset;
	unsigned int ~~sectionLength~~;		unsigned int size;
	unsigned int ~~numOfEntries~~; ~~// each entry is a compressed iwi file in section 2 and entry info in section 1~~		unsigned int itemCount;
	};		};

	struct ~~entry_info_t~~		struct IPakIndexEntry
	{		{
	~~u32 hash~~; ~~// checksum, type?~~		unsigned __int64 key;
	~~u32 id~~;		unsigned int offset;
	~~u32 entryStart~~; ~~// location of compressed iwi file~~		unsigned int size;
	~~u32 entryLength;~~		};
	}; ~~// 16 bytes~~

	struct ~~entry_t~~		struct IPakDataChunkHeader
	{		{
	~~entry_header_t header;~~		unsigned int countAndOffset; // 24 bits = offset, 8 bits = count
	~~block_info_t blocks[31]~~; //~~they can be null, actual number of blocks is header->blockCount;~~		unsigned int commands[31]; //(depending on endian) blockSize = (info & 0xFFFF); , compressedFlag = info >> 24;
	};		};

	~~struct entry_header_t~~
	{
	~~int sizeOfPreviousBlocks :~~ 24~~; // size of previously decompressed blocks~~, ~~0 if it's the first array of blocks for this file~~
	~~int blockCount :~~ 8;
	};

	~~struct block_info_t~~
	~~{ //enum 0x0 = plaintext, 0x1~~ = ~~encrypted~~
	unsigned int ~~info~~; //(depending on endian) blockSize = (info & 0xFFFF); , compressedFlag = info >> 24;
	}; ~~// 4 bytes~~

	== Decompression Methods ==		== Decompression Methods ==

Kokole: /* Structure */

2014-06-08T23:34:26Z

Structure

← Older revision		Revision as of 23:34, 8 June 2014
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	struct entry_header_t		struct entry_header_t
	{		{
	~~:Indented line~~		int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file
	int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file
	int blockCount : 8;		int blockCount : 8;
	};		};

Kokole: /* Structure */

2014-06-08T23:34:00Z

Structure

← Older revision		Revision as of 23:34, 8 June 2014
Line 37:		Line 37:
	struct entry_header_t		struct entry_header_t
	{		{
			:Indented line
	int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file		int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file
	int blockCount : 8;		int blockCount : 8;

Kokole: /* Structure */

2014-06-08T23:32:27Z

Structure

← Older revision		Revision as of 23:32, 8 June 2014
Line 37:		Line 37:
	struct entry_header_t		struct entry_header_t
	{		{
	int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file		int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file
	int blockCount : 8;		int blockCount : 8;
	};		};

Kokole: /* Structure */

2014-06-08T23:31:14Z

Structure

← Older revision		Revision as of 23:31, 8 June 2014
Line 10:		Line 10:
	unsigned int version; //0x50000		unsigned int version; //0x50000
	unsigned int fileSize;		unsigned int fileSize;
	unsigned int sectionCount; ~~//from what I've seen it's always 2 (1 = info 2 = data)~~		unsigned int sectionCount;
	};		};

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	struct entry_header_t		struct entry_header_t
	{		{
	int ~~blockCount~~; // ~~actual blockcount = (byte)&~~blockCount~~[0]~~;		int sizeOfPreviousBlocks : 24; // size of previously decompressed blocks, 0 if it's the first array of blocks for this file
			int blockCount : 8;
	};		};