SYNOPSIS

etc1tool infile [--help | --encode | --encodeNoHeader | --decode] [--showDifference difffile] [-o outfile]

DESCRIPTION

etc1tool is a command line utility that lets you encode PNG images to the ETC1 compression standard and decode ETC1 compressed images back to PNG.

Default is --encode

OPTIONS

infile

The input file to compress.

--help

Print this usage information.

--encode

Create an ETC1 file from a PNG file.

--encodeNoHeader

Create a raw ETC1 data file (without a header) from a PNG file.

--decode

Create a PNG file from an ETC1 file.

--showDifference difffile

Write difference between original and encoded image to difffile. (Only valid when encoding).

-o outfile

Specify the name of the output file. If outfile is not specified, the output file is constructed from the input filename with the appropriate suffix (.pkm or .png).

AUTHORS