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author | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-08-23 12:17:05 +0200 |
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committer | Jörg Frings-Fürst <debian@jff-webhosting.net> | 2015-08-23 12:17:05 +0200 |
commit | c0b89ac5bfb90835ef01573267020e42d4fe070c (patch) | |
tree | 733c16852d964d84b7565af4bdaff0bcca901b88 /jpeg/rdjpgcom.1 | |
parent | 094535c010320967639e8e86f974d878e80baa72 (diff) |
Imported Upstream version 1.8.0upstream/1.8.0
Diffstat (limited to 'jpeg/rdjpgcom.1')
-rw-r--r-- | jpeg/rdjpgcom.1 | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/jpeg/rdjpgcom.1 b/jpeg/rdjpgcom.1 deleted file mode 100644 index 97611df..0000000 --- a/jpeg/rdjpgcom.1 +++ /dev/null @@ -1,63 +0,0 @@ -.TH RDJPGCOM 1 "02 April 2009" -.SH NAME -rdjpgcom \- display text comments from a JPEG file -.SH SYNOPSIS -.B rdjpgcom -[ -.B \-raw -] -[ -.B \-verbose -] -[ -.I filename -] -.LP -.SH DESCRIPTION -.LP -.B rdjpgcom -reads the named JPEG/JFIF file, or the standard input if no file is named, -and prints any text comments found in the file on the standard output. -.PP -The JPEG standard allows "comment" (COM) blocks to occur within a JPEG file. -Although the standard doesn't actually define what COM blocks are for, they -are widely used to hold user-supplied text strings. This lets you add -annotations, titles, index terms, etc to your JPEG files, and later retrieve -them as text. COM blocks do not interfere with the image stored in the JPEG -file. The maximum size of a COM block is 64K, but you can have as many of -them as you like in one JPEG file. -.SH OPTIONS -.TP -.B \-raw -Normally -.B rdjpgcom -escapes non-printable characters in comments, for security reasons. -This option avoids that. -.PP -.B \-verbose -Causes -.B rdjpgcom -to also display the JPEG image dimensions. -.PP -Switch names may be abbreviated, and are not case sensitive. -.SH HINTS -.B rdjpgcom -does not depend on the IJG JPEG library. Its source code is intended as an -illustration of the minimum amount of code required to parse a JPEG file -header correctly. -.PP -In -.B \-verbose -mode, -.B rdjpgcom -will also attempt to print the contents of any "APP12" markers as text. -Some digital cameras produce APP12 markers containing useful textual -information. If you like, you can modify the source code to print -other APPn marker types as well. -.SH SEE ALSO -.BR cjpeg (1), -.BR djpeg (1), -.BR jpegtran (1), -.BR wrjpgcom (1) -.SH AUTHOR -Independent JPEG Group |