好吧,我在处理文件方面还是个新手,有没有人有教程告诉我如何从文件规范中获取信息,这样我就可以用python操作文件了。我想学习如何在将来做这件事,但具体来说,我现在感兴趣的格式叫sff,基本上是一种包含pcx图像的存档类型,其中包含每个帧的一些信息,最终目标是我要解压它并将pcx的子组转换成动画GIF(我已经可以完成最后一部分了,我现在只是想弄清楚如何打开sff)。我尝试过从python文档中读取二进制文件,并使用seek read和strikeunpack来拼凑信息,但它似乎并不像我期望的那样有效。现在我被困在seek(24)
read(4)
(这应该给出下一个子标题的位置),并得到\x00\x02\x00\x00
的结果。我猜是hex(但我不知道如何让python告诉我)。所以我想找一个教程,但具体的答案也欢迎。谢谢。在
以下是我的规格:
/*--| SFF file structure
|--------------------------------------------------*\
Version 1.01
HEADER (512 bytes)
------
Bytes
00-11 "ElecbyteSpr\0" signature [12]
12-15 1 verhi, 1 verlo, 1 verlo2, 1 verlo3 [04]
16-19 Number of groups [04]
20-24 Number of images [04]
24-27 File offset where first subfile is located [04]
28-31 Size of subheader in bytes [04]
32 Palette type (1=SPRPALTYPE_SHARED or 0=SPRPALTYPE_INDIV) [01]
33-35 Blank; set to zero [03]
36-511 Blank; can be used for comments [476]
SUBFILEHEADER (32 bytes)
-------
Bytes
00-03 File offset where next subfile in the "linked list" is [04]
located. Null if last subfile
04-07 Subfile length (not including header) [04]
Length is 0 if it is a linked sprite
08-09 Image axis X coordinate [02]
10-11 Image axis Y coordinate [02]
12-13 Group number [02]
14-15 Image number (in the group) [02]
16-17 Index of previous copy of sprite (linked sprites only) [02]
This is the actual
18 True if palette is same as previous image [01]
19-31 Blank; can be used for comments [14]
32- PCX graphic data. If palette data is available, it is the last
768 bytes.
*--------------------------------------------------------------------------*/
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