add man/vwebp.1

Change-Id: I3257fdeb7d48af99946f751e3e2cd07660117255

man/Makefile.am

@@ -5,4 +5,7 @@ endif
 if BUILD_GIF2WEBP
   man_MANS += gif2webp.1
 endif
+if BUILD_VWEBP
+  man_MANS += vwebp.1
+endif
 EXTRA_DIST = $(man_MANS)

man/vwebp.1

@@ -0,0 +1,79 @@
+.\"                                      Hey, EMACS: -*- nroff -*-
+.TH VWEBP 1 "January 08, 2014"
+.SH NAME
+vwebp \- decompress a WebP file and display it in a window
+.SH SYNOPSIS
+.B vwebp
+.RI [ options ] " input_file.webp
+.br
+.SH DESCRIPTION
+This manual page documents the
+.B vwebp
+command.
+.PP
+\fBvwebp\fP decompresses a WebP file and displays it in a window using OpenGL.
+.SH OPTIONS
+.TP
+.B \-h
+Print usage summary.
+.TP
+.B \-version
+Print version number and exit.
+.TP
+.B \-noicc
+Don't use the ICC profile if present.
+.TP
+.B \-nofancy
+Don't use the fancy YUV420 upscaler.
+.TP
+.B \-nofilter
+Disable in-loop filtering.
+.TP
+.BI \-dither " strength
+Specify a dithering \fBstrength\fP between 0 and 100. Dithering is a
+post-processing effect applied to chroma components in lossy compression.
+It helps by smoothing gradients and avoiding banding artifacts. Default: 50.
+.TP
+.B \-mt
+Use multi-threading for decoding, if possible.
+.TP
+.B \-info
+Display image information on top of the decoded image.
+
+.SH KEYBOARD SHORTCUTS
+.TP
+.B 'c'
+Toggle use of color profile.
+.TP
+.B 'i'
+Overlay file information.
+.TP
+.B 'q' / 'Q' / ESC
+Quit.
+
+.SH BUGS
+Please report all bugs to our issue tracker:
+http://code.google.com/p/webp/issues
+.br
+Patches welcome! See this page to get started:
+http://www.webmproject.org/code/contribute/submitting-patches/
+
+.SH EXAMPLES
+vwebp picture.webp
+.br
+vwebp picture.webp -mt -dither 0
+.br
+vwebp \-\- \-\-\-picture.webp
+
+.SH AUTHORS
+\fBvwebp\fP was written by the WebP team.
+.br
+The latest source tree is available at http://www.webmproject.org/code
+.PP
+This manual page was written for the Debian project (and may be used by others).
+
+.SH SEE ALSO
+.BR dwebp (1)
+.br
+Please refer to http://developers.google.com/speed/webp/ for additional
+information.