XFL - 什么是./bin/*.dat文件? [英] XFL - What are the ./bin/*.dat files?
问题描述
* .dat文件存储各种类型的媒体内容。我可以说迄今为止:
$ ol
pre >
0305;原始位图标识符?
0400;解压缩行数据的长度
0100;宽度
0100;高度
00000000;未知
14000000;宽度缇
00000000;未知
14000000;身高在缇
00;一些标志 - 01 =图像具有透明度
变体1 .:
01;压缩数据标志
0200;长度压缩块
7801;压缩块
0A00;压缩块长度
FBFFFFFF7F0009FA03FD;压缩块
0000;压缩流结尾
变体2:
00;数据是未压缩的
00000000
00000000;未知数据 - 总是为零?
FFFFFFFF;原始未压缩的ARGB数据
其中解压缩的数据是存储类型为ARGB的像素,应该足以从中获得图像。这是使用ZLIB压缩(www.zlib.net)闪存使用压缩级别1,但它可以使用任何级别(但它不是必要的,因为源通常是完全压缩。
声音以RAW格式存储在DAT文件中,使用DOMSoundItem中的信息可以很容易地从中创建WAV文件。
* .dat类型的其余部分还未知。
DAT文件的名称也非常重要! Flash以某种方式从名称中获取数字,使用名称(如十六进制形式的校验和)(9BB551621D3E2138FECA2F04469531D7.dat)使Flash崩溃!使用类似[_的字符。 - ]也会导致内容无法载入(但不会崩溃)。
Uncompressed Adobe's Flash XFL format still keeps a lot of content compressed. Does anybody know specification of these binary *.dat files?
The *.dat files stores various type of media content. What I can say so far is, that:
- images are stored as JPEGs without additional info. That means just renaming *.dat is enough to get the original image. Such a files starts with #{FFD8}
- images are stored in some internal RAW format. Using reverse engineering I can say that for example bitmap with raw pixel data #{FFFFFFFF} (1x1) is stored as:
0305 ;raw bitmap identifier? 0400 ;length of decompressed row data 0100 ;width 0100 ;height 00000000 ;unknown 14000000 ;width in twips 00000000 ;unknown 14000000 ;height in twips 00 ;some flags - 01=image has transparency variant 1.: 01 ;compressed data flag 0200 ;length of compressed chunk 7801 ;compressed chunk 0A00 ;length of compressed chunk FBFFFFFF7F0009FA03FD ;compressed chunk 0000 ;end of compressed stream variant 2.: 00 ;data are uncompressed 00000000 00000000 ;unknown data - always zero? FFFFFFFF ;raw uncompressed ARGB data
where the decompressed data are pixels with storage type: ARGB, so with the size info it should be enough to get the image from it. It's using ZLIB compression (www.zlib.net) Flash is using compression level 1, but it's possible to use any level (but it's not necessary as the sources are normally compressed altogether.
- SOUNDS are stored in DAT files in RAW format, it's possible to make WAV files from it easily using the information from the DOMSoundItem.
- The rest is unknown yet.
The rest of the *.dat types is unknown yet.
The name of the DAT files is important as well! Flash somehow gets numbers from the name, using name like checksum in hexadecimal form (9BB551621D3E2138FECA2F04469531D7.dat) crashes Flash! Using chars like [_.-] will cause the content unloadable as well (but not crash)
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