Name:		ExHIBIT
Description:	sketch/ExHIBIT system developed by RETOUCH (http://www.retouch.info/)
Archive:	.gyu
Author:	        痴漢公賊 (glanser@163.com)
Version:	0.2.2
Status:	        Alpha

【TODO】
1、Process old-versioned gyu archives whose seed is 0 correctly. (Though 空色の風琴 have already found the key, there is still no proper method to search the keys automaticly in a batch.)
2、Support extraction of .v voice file.

【NOTICE】
·.dlt is a kind of movie file. Player can be found at http://www.retouch.info/ (delta.2.xx.zip)
·In release edition, ExHIBIT system enable erasion of key inside gyu, which will cause extraction failure due to missing of key. Specify parameters "key" or "dll" to find correct key:
-key (normal): If you know gyu's key, you can use this parameter to extract gyu.
-dll (advanced): Generally, gyu's key is placed inside "resident.dll", use this parameter to specify this file's path. This method can only to newer systems.
·空色の風琴's gyu keys are listed in "空色の風琴gyu_key_list.txt", in which the order of keys is correspond to the order of games' reg/g/ev sorted by name.

【EXAMPLE】
Take game "EVE ～new generation X～" as an example:
crage -p 1099.gyu -O dll="E:\Program Files\TYRELL LAB\EVEX\resident.dll"
1099.gyu: 准备提取资源封包文件 ...
1099.gyu：成功提取1 / 1个资源文件  |

ExHIBIT：成功提取1个.gyu封包文件

Or extract through specified key:
crage -p 1098.gyu -O key=9b165d9f
1098.gyu: 准备提取资源封包文件 ...
1098.gyu：成功提取1 / 1个资源文件  |

ExHIBIT：成功提取1个.gyu封包文件
 
【.gyu Archive Info】
    the .gyu is actual type of archive without directory.
    meta-data is bmp.

    	header:
    		s8 magic[4];		// "GYU\x1a"
		u32 mode;		// bit field, separating into two groups of high 16-bit and low 16-bit. bit0 - whether with alpha data; bit1 - alpha value interval is [0,255]([0,16] by default); bit24 - no compression; bit25 - lzss compression; bit26 - lzss compression;
		u32 key;		// MT19937 pseudo random number generation seed(-1 means no using MT19937 pseudo random number generation algorithm decryption)
		u32 bits_count;		// color depth
		u32 width;		// width
		u32 height;		// height
		u32 length;		// data length
		u32 gray_length;	// alpha data length
		u32 palette_colors;	// palette color number
	palette data: (if existing)
		no compression, every pixel matching 4 bytes.
	color data:
		coding mode on the basis of mode field.
	alpha data length: (if existing)
		coding mode on the basis of mode field.

【ChangeLog】
2009-03-07 14:13 ver 0.2.2 exported reasonable alpha channel; supported 32-bit bmp alpha bledning; supported alpha large interval
2008-03-15 21:54 ver 0.2.1 fixed a problem on extracting bmp whose palette color number isn't 256
2007-10-27 02:06 ver 0.2.0 renamed plug-in to ExHIBIT
2007-06-02 00:43 ver 0.0.4 fixed a register error
2007-05-30 22:56 ver 0.0.3 renamed plug-in to sketch
2007-03-22 22:47 ver 0.0.2 didn't support exporting audio and dlt