https://www.temlib.org/AtariForumWiki/index.php?action=history&feed=atom&title=Public_Painter_file_format 2026-05-13T18:49:31Z Revision history for this page on the wiki MediaWiki 1.39.2 https://www.temlib.org/AtariForumWiki/index.php?title=Public_Painter_file_format&diff=16545&oldid=prev 2017-01-07T05:34:14Z

<p>add public domain note</p> <table style="background-color: #fff; color: #202122;" data-mw="interface"> <col class="diff-marker" /> <col class="diff-content" /> <col class="diff-marker" /> <col class="diff-content" /> <tr class="diff-title" lang="en"> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td> <td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 01:34, 7 January 2017</td> </tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l20">Line 20:</td> <td colspan="2" class="diff-lineno">Line 20:</td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   flag = first item from file header</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   flag = first item from file header</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   cds  = compressed data size (file size minus sizeof(header))</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>   cds  = compressed data size (file size minus sizeof(header))</div></td></tr> <tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">  </del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr> <tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">/* Written by Lonny Pursell, placed in the Public Domain 1/7/2017 */  </ins></div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>uint32 decode_cmp(uint8 *data, uint8 *bmap, uint8 flg, uint32 cds) {</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>uint32 decode_cmp(uint8 *data, uint8 *bmap, uint8 flg, uint32 cds) {</div></td></tr> <tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     register uint8  byt, cmd;</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>     register uint8  byt, cmd;</div></td></tr> </table>

>Lp https://www.temlib.org/AtariForumWiki/index.php?title=Public_Painter_file_format&diff=16544&oldid=prev 2017-01-07T05:31:03Z

<p>New page</p> <p><b>New page</b></p><div>&lt;pre&gt;<br /> Public Painter *.CMP<br /> <br /> Always monochrome.<br /> <br /> 1 byte flag [used during decompression]<br /> 1 byte size [0 = A5/640x400, 200 = A4/640x800]<br /> -------<br /> 2 bytes total for header<br /> <br /> ? image data:<br /> <br /> The image data is always RLE compressed.<br /> <br /> Depending on the size field the uncompressed image will be 32000 or 64000 bytes.<br /> <br /> Decompression code -&gt; parameters: <br /> data = source address (compressed image data)<br /> bmap = destination address (uncompressed monochrome image data)<br /> flag = first item from file header<br /> cds = compressed data size (file size minus sizeof(header))<br /> <br /> uint32 decode_cmp(uint8 *data, uint8 *bmap, uint8 flg, uint32 cds) {<br /> register uint8 byt, cmd;<br /> register uint16 i, cnt;<br /> register uint32 dst=0, src=0;<br /> <br /> do {<br /> cmd = data[src++];<br /> if (cmd == flg) { /* repeat? */<br /> cnt = 1 + data[src++];<br /> byt = data[src++];<br /> for (i=0; i&lt;cnt; i++) {<br /> bmap[dst++] = byt;<br /> }<br /> } else { /* literal ? */<br /> bmap[dst++] = cmd;<br /> }<br /> } while (src&lt;cds);<br /> return dst;<br /> }<br /> &lt;/pre&gt;<br /> Back to [[ST Picture Formats]]</div>

>Lp