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author Vas Crabb <vas@vastheman.com>2023-12-06 06:05:40 +1100
committer Vas Crabb <vas@vastheman.com>2023-12-06 06:05:40 +1100
commit73751bcea9a5365e5f4d427986ba4f75fe0300ef (patch)
tree40f937b5d5e541a8ac68a80154bf30762e42c048 /3rdparty/libjpeg/cjpeg.1
parent8b2ea383f5f4dffd15c9684e94b7a0d6868d2711 (diff)
3rdparty/libjpeg: Updated to version 9e.
Diffstat (limited to '3rdparty/libjpeg/cjpeg.1')
-rw-r--r--3rdparty/libjpeg/cjpeg.117
1 files changed, 7 insertions, 10 deletions
diff --git a/3rdparty/libjpeg/cjpeg.1 b/3rdparty/libjpeg/cjpeg.1
index 7d685be581a..355d3405504 100644
--- a/3rdparty/libjpeg/cjpeg.1
+++ b/3rdparty/libjpeg/cjpeg.1
@@ -1,4 +1,4 @@
-.TH CJPEG 1 "26 July 2015"
+.TH CJPEG 1 "28 April 2019"
.SH NAME
cjpeg \- compress an image file to a JPEG file
.SH SYNOPSIS
@@ -16,8 +16,9 @@ cjpeg \- compress an image file to a JPEG file
compresses the named image file, or the standard input if no file is
named, and produces a JPEG/JFIF file on the standard output.
The currently supported input file formats are: PPM (PBMPLUS color
-format), PGM (PBMPLUS grayscale format), BMP, Targa, and RLE (Utah Raster
-Toolkit format). (RLE is supported only if the URT library is available.)
+format), PGM (PBMPLUS grayscale format), BMP, GIF, Targa, and RLE (Utah Raster
+Toolkit format). (RLE is supported only if the URT library is available,
+which it isn't on most non-Unix systems.)
.SH OPTIONS
All switch names may be abbreviated; for example,
.B \-grayscale
@@ -42,10 +43,10 @@ Scale quantization tables to adjust image quality. Quality is 0 (worst) to
.TP
.B \-grayscale
Create monochrome JPEG file from color input. Be sure to use this switch when
-compressing a grayscale BMP file, because
+compressing a grayscale BMP or GIF file, because
.B cjpeg
-isn't bright enough to notice whether a BMP file uses only shades of gray.
-By saying
+isn't bright enough to notice whether a BMP or GIF file uses only shades of
+gray. By saying
.BR \-grayscale ,
you'll get a smaller JPEG file that takes less time to process.
.TP
@@ -375,10 +376,6 @@ Communications of the ACM, April 1991 (vol. 34, no. 4), pp. 30-44.
.SH AUTHOR
Independent JPEG Group
.SH BUGS
-GIF input files are no longer supported, to avoid the Unisys LZW patent
-(now expired).
-(Conversion of GIF files to JPEG is usually a bad idea anyway.)
-.PP
Not all variants of BMP and Targa file formats are supported.
.PP
The