X-Face
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|formattype=electronic | |formattype=electronic | ||
|subcat=Graphics | |subcat=Graphics | ||
| + | |extensions={{ext|face}}, {{ext|xface}} | ||
|released=~1990 | |released=~1990 | ||
}} | }} | ||
| − | '''X-Face''' is a compressed image format that can be placed in an email or Usenet newsgroup message header. It is expected to contain the sender's picture or avatar. It is a 48×48 bi-level image. | + | '''X-Face''' is a compressed image format that can be placed in an email or Usenet newsgroup message header. It is expected to contain the sender's picture or avatar. It is a 48×48 bi-level image. The format appears to be fairly complex. |
| + | |||
| + | == Discussion == | ||
| + | Although X-Face data is often expected to be stored in a file, there isn't really a standard X-Face file format. The main thing to be aware of is that sometimes the "X-Face:" header name is stored in the file, and sometimes it is not. Different software has different requirements. | ||
| + | |||
| + | File extensions '''.face''' and '''.xface''' have both been suggested. Sometimes, X-Face data will be in a file named ".face" in the user's home directory. | ||
| + | |||
| + | Although a fair number of open source programs support the format, we have not been able to locate any specifications whatsoever. Most or all X-Face code is based on James Ashton's ''compface'' software, and compface's code is fairly opaque. | ||
| + | |||
| + | == compface format == | ||
| + | The compface software by default converts X-Face to and from a custom format, which it describes at "48 lines each of 3 sixteen bit hexadecimal integers, comma terminated in C initialiser style." It looks something like this: | ||
| + | |||
| + | 0x0000,0x0000,0x0000, | ||
| + | 0x0000,0x4400,0x0000, | ||
| + | 0x0000,0x7600,0x0000, | ||
| + | 0x0002,0x6B80,0x0100, | ||
| + | 0x0006,0x0440,0x0600, | ||
| + | 0x0008,0x0040,0x0E00, | ||
| + | ... | ||
| + | |||
| + | Figuring out the byte-order and bit-order is left as an exercise for the reader. | ||
== Software == | == Software == | ||
* [http://ibiblio.org/pub/linux/apps/graphics/convert/compface-1.4.tar.gz compface-1.4.tar.gz] (<code>uncompface -X</code> to convert to [[XBM]] format) | * [http://ibiblio.org/pub/linux/apps/graphics/convert/compface-1.4.tar.gz compface-1.4.tar.gz] (<code>uncompface -X</code> to convert to [[XBM]] format) | ||
* [[FFmpeg]] | * [[FFmpeg]] | ||
| + | |||
| + | == Samples == | ||
| + | * [http://faces.sourceforge.net/Documents/faces.txt faces man page], "XFACE SUPPORT" section, has an example. | ||
== Links == | == Links == | ||
* [http://www.cs.indiana.edu/ftp/faces/ Faces Archive] - Lists some X-Face resources | * [http://www.cs.indiana.edu/ftp/faces/ Faces Archive] - Lists some X-Face resources | ||
| + | * [http://faces.sourceforge.net/Documents/faces.txt faces man page] | ||
* [http://www.dairiki.org/xface/ Online X-Face Converter] | * [http://www.dairiki.org/xface/ Online X-Face Converter] | ||
| + | * [[Wikipedia: X-Face]] | ||
[[Category:E-Mail, newsgroups, and forums]] | [[Category:E-Mail, newsgroups, and forums]] | ||
Revision as of 20:31, 16 June 2016
X-Face is a compressed image format that can be placed in an email or Usenet newsgroup message header. It is expected to contain the sender's picture or avatar. It is a 48×48 bi-level image. The format appears to be fairly complex.
Contents |
Discussion
Although X-Face data is often expected to be stored in a file, there isn't really a standard X-Face file format. The main thing to be aware of is that sometimes the "X-Face:" header name is stored in the file, and sometimes it is not. Different software has different requirements.
File extensions .face and .xface have both been suggested. Sometimes, X-Face data will be in a file named ".face" in the user's home directory.
Although a fair number of open source programs support the format, we have not been able to locate any specifications whatsoever. Most or all X-Face code is based on James Ashton's compface software, and compface's code is fairly opaque.
compface format
The compface software by default converts X-Face to and from a custom format, which it describes at "48 lines each of 3 sixteen bit hexadecimal integers, comma terminated in C initialiser style." It looks something like this:
0x0000,0x0000,0x0000, 0x0000,0x4400,0x0000, 0x0000,0x7600,0x0000, 0x0002,0x6B80,0x0100, 0x0006,0x0440,0x0600, 0x0008,0x0040,0x0E00, ...
Figuring out the byte-order and bit-order is left as an exercise for the reader.
Software
- compface-1.4.tar.gz (
uncompface -Xto convert to XBM format) - FFmpeg
Samples
- faces man page, "XFACE SUPPORT" section, has an example.
Links
- Faces Archive - Lists some X-Face resources
- faces man page
- Online X-Face Converter
- Wikipedia: X-Face
