Name:		BaldrX
Description:	system developed by 戯画(GIGA) Team Baldr 	
Archive:	.pac .grp .spr .dat(no magic)
Author:	        痴漢公賊 (glanser@163.com)
Version:	0.9.1
Status:	        Alpha

【TODO】
·Extraction of .fnt archives.
·Support of previous version .pac archives. (ぷちチェリー ～あなたといる季節～)

【NOTICE】
·Windows XP's function of preview is not aviliable for RGB565's 16-bit BMP images. Paintbursh (May cause image disorder), Photoshop, AcdSee (Not supported by 3.1) and irfanview can be used to view those images.
·In early games, RGB565 and RGB 555 are not distinguished, both are 16-bit colors. They are distinguished only in recent games. (RGB565 is 16-bit color, while RGB 555 is 15-bit color.) If extracted images seem to have wrong color, please use the parameter "force_rgb555" to force crage export RGB555's 16-bit BMP images. Generally, only early games need this parameter. (Some games, like BALDR BULLET REVELLION use both new and old form at the same time.)

【EXAMPLE】
Take game "BALDR BULLET REVELLION" as an example:
crage -p "K:\BBR\BMP\etc\T_CG.GRP"
This image is a 16-bit BMP one of RGB565.

crage -p "K:\BBR\BMP\etc\TTT.GRP" -O force_rgb555
This image is a 16-bit BMP one of RGB555. If parameter "force_rgb555" is not used, the image will be exported by RGB565, causing bad effect.

【.pac Archive Info】
    the pac is actual type of archive with directory.
    meta-data according to practical situation, can be bmp, wav, bin(compiled binary script) or ani and so on.

    	header:
    		s8 magic[4];	// "PAC" or "PACw"
		u32 entries;	// every item with 76 bytes
		u32 cmode;	// 0: no compression; 1: lzss compression; 2: normal huffman compression
	index segment:		
		closely behind header.			
		s8 name[64];	// resource name
		u32 offset;	// resource data offse(count from header)
		u32 uncomprLen;	// decompressed data length(if in no compression, field vaule is equal to ones in comprLen)
		u32 comprLen;	// compressed data length
	data:
		closely behind index segment.	
    
【.grp Resource Info】
    meta-data is bmp.
   	
   	header: 
		s8 magic[3];	// "GR2"(5-bit copy_bytes; 11-bit win_offset)
		u16 bits_count;	// color depth
		u32 width;	// width
		u32 height;	// height
		u32 dib_len;	// compressed data length
		u32 flag_bits;	// number of bits of lzss's flag-bit
	flag segment:
		all lzss flag-bit are gathered to the field, actual length is equal to (flag_bits+7)/8.
	data:
		closely behind flag segment.

【ChangeLog】
2008-03-13 22:27 ver 0.9.1 supported a version of old .pac 
2007-11-18 15:38 ver 0.9.0 fixed a problem on using incorrectlly palette to export 8-bit bitmap; supported extracting .spr file; imported force_rgb555 parameter
2007-05-30 23:01 ver 0.0.2 supported pac archive with magic is "PACw"
2007-04-03 21:57 ver 0.0.1 1st version released