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.TH "ETC1TOOL" "1" "" "" ""
.hy
.SH NAME
.PP
etc1tool \- ETC1 conversion tool
.SH SYNOPSIS
.PP
\f[B]etc1tool\f[] \f[I]infile\f[] [\[en]help | \[en]encode |
\[en]encodeNoHeader | \[en]decode] [\[en]showDifference
\f[I]difffile\f[]] [\-o \f[I]outfile\f[]]
.SH DESCRIPTION
.PP
\f[B]etc1tool\f[] is a command line utility that lets you encode PNG
images to the ETC1 compression standard and decode ETC1 compressed
images back to PNG.
.PP
Default is \f[B]\[en]encode\f[]
.SH OPTIONS
.TP
.B \f[I]infile\f[]
The input file to compress.
.RS
.RE
.TP
.B \[en]help
Print this usage information.
.RS
.RE
.TP
.B \[en]encode
Create an ETC1 file from a PNG file.
.RS
.RE
.TP
.B \[en]encodeNoHeader
Create a raw ETC1 data file (without a header) from a PNG file.
.RS
.RE
.TP
.B \[en]decode
Create a PNG file from an ETC1 file.
.RS
.RE
.TP
.B \[en]showDifference \f[I]difffile\f[]
Write difference between original and encoded image to
\f[I]difffile\f[].
(Only valid when encoding).
.RS
.RE
.TP
.B \-o \f[I]outfile\f[]
Specify the name of the output file.
If \f[I]outfile\f[] is not specified, the output file is constructed
from the input filename with the appropriate suffix (\f[B].pkm\f[] or
\f[B].png\f[]).
.RS
.RE
.SH SEE ALSO
.PP
https://developer.android.com/tools/help/etc1tool.html
.SH AUTHORS
The Android Open Source Project.