1 page.title=etc1tool 2 parent.title=Tools 3 parent.link=index.html 4 @jd:body 5 6 7 <p><code>etc1tool</code> is a command line utility that lets you encode PNG 8 images to the ETC1 compression standard and decode ETC1 compressed images back to PNG.</p> 9 10 <p>The usage for <code>etc1tool</code> is:</p> 11 <pre>etc1tool infile [--help | --encode | --encodeNoHeader | --decode] [--showDifference 12 diff-file] [-o outfile]</pre> 13 14 <table> 15 <tr> 16 <th>Option</th> 17 18 <th>Description</th> 19 </tr> 20 21 <tr> 22 <td><code>infile</code></td> 23 24 <td>The input file to compress</td> 25 </tr> 26 27 <tr> 28 <td><code>--help</code></td> 29 30 <td>Print usage information</td> 31 </tr> 32 33 <tr> 34 <td><code>--encode</code></td> 35 36 <td>Create an ETC1 file from a PNG file. 37 This is the default mode for the tool if nothing is specified.</td> 38 </tr> 39 40 <tr> 41 <td><code>--encodeNoHeader</code></td> 42 43 <td>Create a raw ETC1 data file (without a header) from a PNG file.</td> 44 </tr> 45 46 <tr> 47 <td><code>--decode</code></td> 48 49 <td>Create a PNG file from an ETC1 file</td> 50 </tr> 51 52 <tr> 53 <td><code>--showDifference <em>diff-file</em></code></td> 54 55 <td>Write the difference between the original and encoded image to 56 <code><em>diff-file</em></code> (only valid when encoding).</td> 57 </tr> 58 59 <tr> 60 <td><code>-o <em>outfile</em></code></td> 61 62 <td>Specify the name of the output file. 63 If <code><em>outfile</em></code> is not specified, the output file is constructed 64 from the input filename with the appropriate suffix (<code>.pkm</code> or <code>.png</code>). 65 </td> 66 </tr> 67 68 </table>
