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<div class="title">rgb.cpp</div> </div>
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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// kimgio module for SGI images</span>
<a name="l00002"></a>00002 <span class="comment">//</span>
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2004 Melchior FRANZ <mfranz@kde.org></span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">// This program is free software; you can redistribute it and/or</span>
<a name="l00006"></a>00006 <span class="comment">// modify it under the terms of the Lesser GNU General Public License as</span>
<a name="l00007"></a>00007 <span class="comment">// published by the Free Software Foundation; either version 2 of the</span>
<a name="l00008"></a>00008 <span class="comment">// License, or (at your option) any later version.</span>
<a name="l00009"></a>00009
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">/* this code supports:</span>
<a name="l00012"></a>00012 <span class="comment"> * reading:</span>
<a name="l00013"></a>00013 <span class="comment"> * everything, except images with 1 dimension or images with</span>
<a name="l00014"></a>00014 <span class="comment"> * mapmode != NORMAL (e.g. dithered); Images with 16 bit</span>
<a name="l00015"></a>00015 <span class="comment"> * precision or more than 4 layers are stripped down.</span>
<a name="l00016"></a>00016 <span class="comment"> * writing:</span>
<a name="l00017"></a>00017 <span class="comment"> * Run Length Encoded (RLE) or Verbatim (uncompressed)</span>
<a name="l00018"></a>00018 <span class="comment"> * (whichever is smaller)</span>
<a name="l00019"></a>00019 <span class="comment"> *</span>
<a name="l00020"></a>00020 <span class="comment"> * Please report if you come across rgb/rgba/sgi/bw files that aren't</span>
<a name="l00021"></a>00021 <span class="comment"> * recognized. Also report applications that can't deal with images</span>
<a name="l00022"></a>00022 <span class="comment"> * saved by this filter.</span>
<a name="l00023"></a>00023 <span class="comment"> */</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025
<a name="l00026"></a>00026 <span class="preprocessor">#include "rgb.h"</span>
<a name="l00027"></a>00027 <span class="preprocessor">#include <qimage.h></span>
<a name="l00028"></a>00028 <span class="preprocessor">#include <kdebug.h></span>
<a name="l00029"></a>00029
<a name="l00030"></a>00030
<a name="l00032"></a>00032
<a name="l00033"></a>00033
<a name="l00034"></a>00034 KDE_EXPORT <span class="keywordtype">void</span> kimgio_rgb_read(<a class="codeRef" href="qimageio.html">QImageIO</a> *io)
<a name="l00035"></a>00035 {
<a name="l00036"></a>00036 SGIImage sgi(io);
<a name="l00037"></a>00037 <a class="codeRef" href="qimage.html">QImage</a> img;
<a name="l00038"></a>00038
<a name="l00039"></a>00039 <span class="keywordflow">if</span> (!sgi.readImage(img)) {
<a name="l00040"></a>00040 io-><a class="codeRef" href="qimageio.html#setImage">setImage</a>(0);
<a name="l00041"></a>00041 io-><a class="codeRef" href="qimageio.html#setStatus">setStatus</a>(-1);
<a name="l00042"></a>00042 <span class="keywordflow">return</span>;
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044
<a name="l00045"></a>00045 io-><a class="codeRef" href="qimageio.html#setImage">setImage</a>(img);
<a name="l00046"></a>00046 io-><a class="codeRef" href="qimageio.html#setStatus">setStatus</a>(0);
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a>00049
<a name="l00050"></a>00050 KDE_EXPORT <span class="keywordtype">void</span> kimgio_rgb_write(<a class="codeRef" href="qimageio.html">QImageIO</a> *io)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 SGIImage sgi(io);
<a name="l00053"></a>00053 <a class="codeRef" href="qimage.html">QImage</a> img = io-><a class="codeRef" href="qimageio.html#image">image</a>();
<a name="l00054"></a>00054
<a name="l00055"></a>00055 <span class="keywordflow">if</span> (!sgi.writeImage(img))
<a name="l00056"></a>00056 io-><a class="codeRef" href="qimageio.html#setStatus">setStatus</a>(-1);
<a name="l00057"></a>00057
<a name="l00058"></a>00058 io-><a class="codeRef" href="qimageio.html#setStatus">setStatus</a>(0);
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060
<a name="l00061"></a>00061
<a name="l00063"></a>00063
<a name="l00064"></a>00064
<a name="l00065"></a>00065 SGIImage::SGIImage(<a class="codeRef" href="qimageio.html">QImageIO</a> *io) :
<a name="l00066"></a>00066 m_io(io),
<a name="l00067"></a>00067 m_starttab(0),
<a name="l00068"></a>00068 m_lengthtab(0)
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 m_dev = io-><a class="codeRef" href="qimageio.html#ioDevice">ioDevice</a>();
<a name="l00071"></a>00071 m_stream.setDevice(m_dev);
<a name="l00072"></a>00072 }
<a name="l00073"></a>00073
<a name="l00074"></a>00074
<a name="l00075"></a>00075 SGIImage::~SGIImage()
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 <span class="keyword">delete</span>[] m_starttab;
<a name="l00078"></a>00078 <span class="keyword">delete</span>[] m_lengthtab;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081
<a name="l00083"></a>00083
<a name="l00084"></a>00084
<a name="l00085"></a>00085 <span class="keywordtype">bool</span> SGIImage::getRow(uchar *dest)
<a name="l00086"></a>00086 {
<a name="l00087"></a>00087 <span class="keywordtype">int</span> n, i;
<a name="l00088"></a>00088 <span class="keywordflow">if</span> (!m_rle) {
<a name="l00089"></a>00089 <span class="keywordflow">for</span> (i = 0; i < m_xsize; i++) {
<a name="l00090"></a>00090 <span class="keywordflow">if</span> (m_pos >= m_data.end())
<a name="l00091"></a>00091 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00092"></a>00092 dest[i] = uchar(*m_pos);
<a name="l00093"></a>00093 m_pos += m_bpc;
<a name="l00094"></a>00094 }
<a name="l00095"></a>00095 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00096"></a>00096 }
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keywordflow">for</span> (i = 0; i < m_xsize;) {
<a name="l00099"></a>00099 <span class="keywordflow">if</span> (m_bpc == 2)
<a name="l00100"></a>00100 m_pos++;
<a name="l00101"></a>00101 n = *m_pos & 0x7f;
<a name="l00102"></a>00102 <span class="keywordflow">if</span> (!n)
<a name="l00103"></a>00103 <span class="keywordflow">break</span>;
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keywordflow">if</span> (*m_pos++ & 0x80) {
<a name="l00106"></a>00106 <span class="keywordflow">for</span> (; i < m_xsize && n--; i++) {
<a name="l00107"></a>00107 *dest++ = *m_pos;
<a name="l00108"></a>00108 m_pos += m_bpc;
<a name="l00109"></a>00109 }
<a name="l00110"></a>00110 } <span class="keywordflow">else</span> {
<a name="l00111"></a>00111 <span class="keywordflow">for</span> (; i < m_xsize && n--; i++)
<a name="l00112"></a>00112 *dest++ = *m_pos;
<a name="l00113"></a>00113
<a name="l00114"></a>00114 m_pos += m_bpc;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116 }
<a name="l00117"></a>00117 <span class="keywordflow">return</span> i == m_xsize;
<a name="l00118"></a>00118 }
<a name="l00119"></a>00119
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="keywordtype">bool</span> SGIImage::readData(<a class="codeRef" href="qimage.html">QImage</a>& img)
<a name="l00122"></a>00122 {
<a name="l00123"></a>00123 QRgb *c;
<a name="l00124"></a>00124 Q_UINT32 *start = m_starttab;
<a name="l00125"></a>00125 <a class="codeRef" href="qbytearray.html">QByteArray</a> lguard(m_xsize);
<a name="l00126"></a>00126 uchar *line = (uchar *)lguard.data();
<a name="l00127"></a>00127 <span class="keywordtype">unsigned</span> x, y;
<a name="l00128"></a>00128
<a name="l00129"></a>00129 <span class="keywordflow">if</span> (!m_rle)
<a name="l00130"></a>00130 m_pos = m_data.begin();
<a name="l00131"></a>00131
<a name="l00132"></a>00132 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00133"></a>00133 <span class="keywordflow">if</span> (m_rle)
<a name="l00134"></a>00134 m_pos = m_data.begin() + *start++;
<a name="l00135"></a>00135 <span class="keywordflow">if</span> (!getRow(line))
<a name="l00136"></a>00136 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00137"></a>00137 c = (QRgb *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1);
<a name="l00138"></a>00138 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++, c++)
<a name="l00139"></a>00139 *c = qRgb(line[x], line[x], line[x]);
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141
<a name="l00142"></a>00142 <span class="keywordflow">if</span> (m_zsize == 1)
<a name="l00143"></a>00143 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00144"></a>00144
<a name="l00145"></a>00145 <span class="keywordflow">if</span> (m_zsize != 2) {
<a name="l00146"></a>00146 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00147"></a>00147 <span class="keywordflow">if</span> (m_rle)
<a name="l00148"></a>00148 m_pos = m_data.begin() + *start++;
<a name="l00149"></a>00149 <span class="keywordflow">if</span> (!getRow(line))
<a name="l00150"></a>00150 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00151"></a>00151 c = (QRgb *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1);
<a name="l00152"></a>00152 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++, c++)
<a name="l00153"></a>00153 *c = qRgb(qRed(*c), line[x], line[x]);
<a name="l00154"></a>00154 }
<a name="l00155"></a>00155
<a name="l00156"></a>00156 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00157"></a>00157 <span class="keywordflow">if</span> (m_rle)
<a name="l00158"></a>00158 m_pos = m_data.begin() + *start++;
<a name="l00159"></a>00159 <span class="keywordflow">if</span> (!getRow(line))
<a name="l00160"></a>00160 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00161"></a>00161 c = (QRgb *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1);
<a name="l00162"></a>00162 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++, c++)
<a name="l00163"></a>00163 *c = qRgb(qRed(*c), qGreen(*c), line[x]);
<a name="l00164"></a>00164 }
<a name="l00165"></a>00165
<a name="l00166"></a>00166 <span class="keywordflow">if</span> (m_zsize == 3)
<a name="l00167"></a>00167 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00171"></a>00171 <span class="keywordflow">if</span> (m_rle)
<a name="l00172"></a>00172 m_pos = m_data.begin() + *start++;
<a name="l00173"></a>00173 <span class="keywordflow">if</span> (!getRow(line))
<a name="l00174"></a>00174 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00175"></a>00175 c = (QRgb *)img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1);
<a name="l00176"></a>00176 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++, c++)
<a name="l00177"></a>00177 *c = qRgba(qRed(*c), qGreen(*c), qBlue(*c), line[x]);
<a name="l00178"></a>00178 }
<a name="l00179"></a>00179
<a name="l00180"></a>00180 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordtype">bool</span> SGIImage::readImage(<a class="codeRef" href="qimage.html">QImage</a>& img)
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 Q_INT8 u8;
<a name="l00187"></a>00187 Q_INT16 u16;
<a name="l00188"></a>00188 Q_INT32 u32;
<a name="l00189"></a>00189
<a name="l00190"></a>00190 kdDebug(399) << <span class="stringliteral">"reading '"</span> << m_io->fileName() << <span class="charliteral">'\''</span> << endl;
<a name="l00191"></a>00191
<a name="l00192"></a>00192 <span class="comment">// magic</span>
<a name="l00193"></a>00193 m_stream >> u16;
<a name="l00194"></a>00194 <span class="keywordflow">if</span> (u16 != 0x01da)
<a name="l00195"></a>00195 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="comment">// verbatim/rle</span>
<a name="l00198"></a>00198 m_stream >> m_rle;
<a name="l00199"></a>00199 kdDebug(399) << (m_rle ? <span class="stringliteral">"RLE"</span> : <span class="stringliteral">"verbatim"</span>) << endl;
<a name="l00200"></a>00200 <span class="keywordflow">if</span> (m_rle > 1)
<a name="l00201"></a>00201 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00202"></a>00202
<a name="l00203"></a>00203 <span class="comment">// bytes per channel</span>
<a name="l00204"></a>00204 m_stream >> m_bpc;
<a name="l00205"></a>00205 kdDebug(399) << <span class="stringliteral">"bytes per channel: "</span> << int(m_bpc) << endl;
<a name="l00206"></a>00206 <span class="keywordflow">if</span> (m_bpc == 1)
<a name="l00207"></a>00207 ;
<a name="l00208"></a>00208 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_bpc == 2)
<a name="l00209"></a>00209 kdDebug(399) << <span class="stringliteral">"dropping least significant byte"</span> << endl;
<a name="l00210"></a>00210 <span class="keywordflow">else</span>
<a name="l00211"></a>00211 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00212"></a>00212
<a name="l00213"></a>00213 <span class="comment">// number of dimensions</span>
<a name="l00214"></a>00214 m_stream >> m_dim;
<a name="l00215"></a>00215 kdDebug(399) << <span class="stringliteral">"dimensions: "</span> << m_dim << endl;
<a name="l00216"></a>00216 <span class="keywordflow">if</span> (m_dim < 1 || m_dim > 3)
<a name="l00217"></a>00217 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00218"></a>00218
<a name="l00219"></a>00219 m_stream >> m_xsize >> m_ysize >> m_zsize >> m_pixmin >> m_pixmax >> u32;
<a name="l00220"></a>00220 kdDebug(399) << <span class="stringliteral">"x: "</span> << m_xsize << endl;
<a name="l00221"></a>00221 kdDebug(399) << <span class="stringliteral">"y: "</span> << m_ysize << endl;
<a name="l00222"></a>00222 kdDebug(399) << <span class="stringliteral">"z: "</span> << m_zsize << endl;
<a name="l00223"></a>00223
<a name="l00224"></a>00224 <span class="comment">// name</span>
<a name="l00225"></a>00225 m_stream.readRawBytes(m_imagename, 80);
<a name="l00226"></a>00226 m_imagename[79] = <span class="charliteral">'\0'</span>;
<a name="l00227"></a>00227 m_io->setDescription(m_imagename);
<a name="l00228"></a>00228
<a name="l00229"></a>00229 m_stream >> m_colormap;
<a name="l00230"></a>00230 kdDebug(399) << <span class="stringliteral">"colormap: "</span> << m_colormap << endl;
<a name="l00231"></a>00231 <span class="keywordflow">if</span> (m_colormap != NORMAL)
<a name="l00232"></a>00232 <span class="keywordflow">return</span> <span class="keyword">false</span>; <span class="comment">// only NORMAL supported</span>
<a name="l00233"></a>00233
<a name="l00234"></a>00234 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i < 404; i++)
<a name="l00235"></a>00235 m_stream >> u8;
<a name="l00236"></a>00236
<a name="l00237"></a>00237 <span class="keywordflow">if</span> (m_dim == 1) {
<a name="l00238"></a>00238 kdDebug(399) << <span class="stringliteral">"1-dimensional images aren't supported yet"</span> << endl;
<a name="l00239"></a>00239 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00240"></a>00240 }
<a name="l00241"></a>00241
<a name="l00242"></a>00242 <span class="keywordflow">if</span>( m_stream.atEnd())
<a name="l00243"></a>00243 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00244"></a>00244
<a name="l00245"></a>00245 m_numrows = m_ysize * m_zsize;
<a name="l00246"></a>00246
<a name="l00247"></a>00247 <span class="keywordflow">if</span> (!img.<a class="codeRef" href="qimage.html#create">create</a>(m_xsize, m_ysize, 32)) {
<a name="l00248"></a>00248 kdDebug(399) << <span class="stringliteral">"cannot create image"</span> << endl;
<a name="l00249"></a>00249 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00250"></a>00250 }
<a name="l00251"></a>00251
<a name="l00252"></a>00252 <span class="keywordflow">if</span> (m_zsize == 2 || m_zsize == 4)
<a name="l00253"></a>00253 img.<a class="codeRef" href="qimage.html#setAlphaBuffer">setAlphaBuffer</a>(<span class="keyword">true</span>);
<a name="l00254"></a>00254 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (m_zsize > 4)
<a name="l00255"></a>00255 kdDebug(399) << <span class="stringliteral">"using first 4 of "</span> << m_zsize << <span class="stringliteral">" channels"</span> << endl;
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="keywordflow">if</span> (m_rle) {
<a name="l00258"></a>00258 uint l;
<a name="l00259"></a>00259 m_starttab = <span class="keyword">new</span> Q_UINT32[m_numrows];
<a name="l00260"></a>00260 <span class="keywordflow">for</span> (l = 0; !m_stream.atEnd() && l < m_numrows; l++) {
<a name="l00261"></a>00261 m_stream >> m_starttab[l];
<a name="l00262"></a>00262 m_starttab[l] -= 512 + m_numrows * 2 * <span class="keyword">sizeof</span>(Q_UINT32);
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264
<a name="l00265"></a>00265 m_lengthtab = <span class="keyword">new</span> Q_UINT32[m_numrows];
<a name="l00266"></a>00266 <span class="keywordflow">for</span> (l = 0; l < m_numrows; l++)
<a name="l00267"></a>00267 m_stream >> m_lengthtab[l];
<a name="l00268"></a>00268 }
<a name="l00269"></a>00269
<a name="l00270"></a>00270 m_data = m_dev->readAll();
<a name="l00271"></a>00271
<a name="l00272"></a>00272 <span class="comment">// sanity check</span>
<a name="l00273"></a>00273 <span class="keywordflow">if</span> (m_rle)
<a name="l00274"></a>00274 <span class="keywordflow">for</span> (uint o = 0; o < m_numrows; o++)
<a name="l00275"></a>00275 <span class="comment">// don't change to greater-or-equal!</span>
<a name="l00276"></a>00276 <span class="keywordflow">if</span> (m_starttab[o] + m_lengthtab[o] > m_data.size()) {
<a name="l00277"></a>00277 kdDebug(399) << <span class="stringliteral">"image corrupt (sanity check failed)"</span> << endl;
<a name="l00278"></a>00278 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00279"></a>00279 }
<a name="l00280"></a>00280
<a name="l00281"></a>00281 <span class="keywordflow">if</span> (!readData(img)) {
<a name="l00282"></a>00282 kdDebug(399) << <span class="stringliteral">"image corrupt (incomplete scanline)"</span> << endl;
<a name="l00283"></a>00283 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00284"></a>00284 }
<a name="l00285"></a>00285
<a name="l00286"></a>00286 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00287"></a>00287 }
<a name="l00288"></a>00288
<a name="l00289"></a>00289
<a name="l00291"></a>00291
<a name="l00292"></a>00292
<a name="l00293"></a>00293 <span class="comment">// TODO remove; for debugging purposes only</span>
<a name="l00294"></a>00294 <span class="keywordtype">void</span> RLEData::print(<a class="codeRef" href="qstring.html">QString</a> desc)<span class="keyword"> const</span>
<a name="l00295"></a>00295 <span class="keyword"></span>{
<a name="l00296"></a>00296 <a class="codeRef" href="qstring.html">QString</a> s = desc + <span class="stringliteral">": "</span>;
<a name="l00297"></a>00297 <span class="keywordflow">for</span> (uint i = 0; i < size(); i++)
<a name="l00298"></a>00298 s += <a class="codeRef" href="qstring.html#number">QString::number</a>(at(i)) + <span class="stringliteral">","</span>;
<a name="l00299"></a>00299 kdDebug() << <span class="stringliteral">"--- "</span> << s << endl;
<a name="l00300"></a>00300 }
<a name="l00301"></a>00301
<a name="l00302"></a>00302
<a name="l00303"></a>00303 <span class="keywordtype">void</span> <a class="codeRef" href="qimageio.html#write">RLEData::write</a>(<a class="codeRef" href="qdatastream.html">QDataStream</a>& s)
<a name="l00304"></a>00304 {
<a name="l00305"></a>00305 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < size(); i++)
<a name="l00306"></a>00306 s << at(i);
<a name="l00307"></a>00307 }
<a name="l00308"></a>00308
<a name="l00309"></a>00309
<a name="l00310"></a>00310 <span class="keywordtype">bool</span> RLEData::operator<(<span class="keyword">const</span> RLEData& b)<span class="keyword"> const</span>
<a name="l00311"></a>00311 <span class="keyword"></span>{
<a name="l00312"></a>00312 uchar ac, bc;
<a name="l00313"></a>00313 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < QMIN(size(), b.size()); i++) {
<a name="l00314"></a>00314 ac = at(i);
<a name="l00315"></a>00315 bc = b[i];
<a name="l00316"></a>00316 <span class="keywordflow">if</span> (ac != bc)
<a name="l00317"></a>00317 <span class="keywordflow">return</span> ac < bc;
<a name="l00318"></a>00318 }
<a name="l00319"></a>00319 <span class="keywordflow">return</span> size() < b.size();
<a name="l00320"></a>00320 }
<a name="l00321"></a>00321
<a name="l00322"></a>00322
<a name="l00323"></a>00323 uint <a class="codeRef" href="qmap.html#insert">RLEMap::insert</a>(<span class="keyword">const</span> uchar *d, uint l)
<a name="l00324"></a>00324 {
<a name="l00325"></a>00325 RLEData data = RLEData(d, l, m_offset);
<a name="l00326"></a>00326 Iterator it = find(data);
<a name="l00327"></a>00327 <span class="keywordflow">if</span> (it != end())
<a name="l00328"></a>00328 <span class="keywordflow">return</span> it.data();
<a name="l00329"></a>00329
<a name="l00330"></a>00330 m_offset += l;
<a name="l00331"></a>00331 <span class="keywordflow">return</span> <a class="codeRef" href="qmap.html#insert">QMap<RLEData, uint>::insert</a>(data, m_counter++).data();
<a name="l00332"></a>00332 }
<a name="l00333"></a>00333
<a name="l00334"></a>00334
<a name="l00335"></a>00335 <a class="codeRef" href="qptrvector.html">QPtrVector<RLEData></a> RLEMap::vector()
<a name="l00336"></a>00336 {
<a name="l00337"></a>00337 <a class="codeRef" href="qptrvector.html">QPtrVector<RLEData></a> v(size());
<a name="l00338"></a>00338 <span class="keywordflow">for</span> (Iterator it = begin(); it != end(); ++it)
<a name="l00339"></a>00339 v.insert(it.data(), &it.key());
<a name="l00340"></a>00340
<a name="l00341"></a>00341 <span class="keywordflow">return</span> v;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343
<a name="l00344"></a>00344
<a name="l00345"></a>00345 uchar SGIImage::intensity(uchar c)
<a name="l00346"></a>00346 {
<a name="l00347"></a>00347 <span class="keywordflow">if</span> (c < m_pixmin)
<a name="l00348"></a>00348 m_pixmin = c;
<a name="l00349"></a>00349 <span class="keywordflow">if</span> (c > m_pixmax)
<a name="l00350"></a>00350 m_pixmax = c;
<a name="l00351"></a>00351 <span class="keywordflow">return</span> c;
<a name="l00352"></a>00352 }
<a name="l00353"></a>00353
<a name="l00354"></a>00354
<a name="l00355"></a>00355 uint SGIImage::compact(uchar *d, uchar *s)
<a name="l00356"></a>00356 {
<a name="l00357"></a>00357 uchar *dest = d, *src = s, patt, *t, *end = s + m_xsize;
<a name="l00358"></a>00358 <span class="keywordtype">int</span> i, n;
<a name="l00359"></a>00359 <span class="keywordflow">while</span> (src < end) {
<a name="l00360"></a>00360 <span class="keywordflow">for</span> (n = 0, t = src; t + 2 < end && !(*t == t[1] && *t == t[2]); t++)
<a name="l00361"></a>00361 n++;
<a name="l00362"></a>00362
<a name="l00363"></a>00363 <span class="keywordflow">while</span> (n) {
<a name="l00364"></a>00364 i = n > 126 ? 126 : n;
<a name="l00365"></a>00365 n -= i;
<a name="l00366"></a>00366 *dest++ = 0x80 | i;
<a name="l00367"></a>00367 <span class="keywordflow">while</span> (i--)
<a name="l00368"></a>00368 *dest++ = *src++;
<a name="l00369"></a>00369 }
<a name="l00370"></a>00370
<a name="l00371"></a>00371 <span class="keywordflow">if</span> (src == end)
<a name="l00372"></a>00372 <span class="keywordflow">break</span>;
<a name="l00373"></a>00373
<a name="l00374"></a>00374 patt = *src++;
<a name="l00375"></a>00375 <span class="keywordflow">for</span> (n = 1; src < end && *src == patt; src++)
<a name="l00376"></a>00376 n++;
<a name="l00377"></a>00377
<a name="l00378"></a>00378 <span class="keywordflow">while</span> (n) {
<a name="l00379"></a>00379 i = n > 126 ? 126 : n;
<a name="l00380"></a>00380 n -= i;
<a name="l00381"></a>00381 *dest++ = i;
<a name="l00382"></a>00382 *dest++ = patt;
<a name="l00383"></a>00383 }
<a name="l00384"></a>00384 }
<a name="l00385"></a>00385 *dest++ = 0;
<a name="l00386"></a>00386 <span class="keywordflow">return</span> dest - d;
<a name="l00387"></a>00387 }
<a name="l00388"></a>00388
<a name="l00389"></a>00389
<a name="l00390"></a>00390 <span class="keywordtype">bool</span> SGIImage::scanData(<span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a>& img)
<a name="l00391"></a>00391 {
<a name="l00392"></a>00392 Q_UINT32 *start = m_starttab;
<a name="l00393"></a>00393 <a class="codeRef" href="qcstring.html">QCString</a> lineguard(m_xsize * 2);
<a name="l00394"></a>00394 <a class="codeRef" href="qcstring.html">QCString</a> bufguard(m_xsize);
<a name="l00395"></a>00395 uchar *line = (uchar *)lineguard.data();
<a name="l00396"></a>00396 uchar *buf = (uchar *)bufguard.data();
<a name="l00397"></a>00397 QRgb *c;
<a name="l00398"></a>00398 <span class="keywordtype">unsigned</span> x, y;
<a name="l00399"></a>00399 uint len;
<a name="l00400"></a>00400
<a name="l00401"></a>00401 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00402"></a>00402 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00403"></a>00403 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00404"></a>00404 buf[x] = intensity(qRed(*c++));
<a name="l00405"></a>00405 len = compact(line, buf);
<a name="l00406"></a>00406 *start++ = m_rlemap.insert(line, len);
<a name="l00407"></a>00407 }
<a name="l00408"></a>00408
<a name="l00409"></a>00409 <span class="keywordflow">if</span> (m_zsize == 1)
<a name="l00410"></a>00410 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00411"></a>00411
<a name="l00412"></a>00412 <span class="keywordflow">if</span> (m_zsize != 2) {
<a name="l00413"></a>00413 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00414"></a>00414 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00415"></a>00415 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00416"></a>00416 buf[x] = intensity(qGreen(*c++));
<a name="l00417"></a>00417 len = compact(line, buf);
<a name="l00418"></a>00418 *start++ = m_rlemap.insert(line, len);
<a name="l00419"></a>00419 }
<a name="l00420"></a>00420
<a name="l00421"></a>00421 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00422"></a>00422 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00423"></a>00423 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00424"></a>00424 buf[x] = intensity(qBlue(*c++));
<a name="l00425"></a>00425 len = compact(line, buf);
<a name="l00426"></a>00426 *start++ = m_rlemap.insert(line, len);
<a name="l00427"></a>00427 }
<a name="l00428"></a>00428
<a name="l00429"></a>00429 <span class="keywordflow">if</span> (m_zsize == 3)
<a name="l00430"></a>00430 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00431"></a>00431 }
<a name="l00432"></a>00432
<a name="l00433"></a>00433 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00434"></a>00434 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00435"></a>00435 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00436"></a>00436 buf[x] = intensity(qAlpha(*c++));
<a name="l00437"></a>00437 len = compact(line, buf);
<a name="l00438"></a>00438 *start++ = m_rlemap.insert(line, len);
<a name="l00439"></a>00439 }
<a name="l00440"></a>00440
<a name="l00441"></a>00441 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00442"></a>00442 }
<a name="l00443"></a>00443
<a name="l00444"></a>00444
<a name="l00445"></a>00445 <span class="keywordtype">void</span> SGIImage::writeHeader()
<a name="l00446"></a>00446 {
<a name="l00447"></a>00447 m_stream << Q_UINT16(0x01da);
<a name="l00448"></a>00448 m_stream << m_rle << m_bpc << m_dim;
<a name="l00449"></a>00449 m_stream << m_xsize << m_ysize << m_zsize;
<a name="l00450"></a>00450 m_stream << m_pixmin << m_pixmax;
<a name="l00451"></a>00451 m_stream << Q_UINT32(0);
<a name="l00452"></a>00452
<a name="l00453"></a>00453 uint i;
<a name="l00454"></a>00454 <a class="codeRef" href="qstring.html">QString</a> desc = m_io->description();
<a name="l00455"></a>00455 kdDebug(399) << <span class="stringliteral">"Description: "</span> << desc << endl;
<a name="l00456"></a>00456 desc.<a class="codeRef" href="qstring.html#truncate">truncate</a>(79);
<a name="l00457"></a>00457
<a name="l00458"></a>00458 <span class="keywordflow">for</span> (i = 0; i < desc.<a class="codeRef" href="qstring.html#length">length</a>(); i++)
<a name="l00459"></a>00459 m_imagename[i] = desc.<a class="codeRef" href="qstring.html#latin1">latin1</a>()[i];
<a name="l00460"></a>00460 <span class="keywordflow">for</span> (; i < 80; i++)
<a name="l00461"></a>00461 m_imagename[i] = <span class="charliteral">'\0'</span>;
<a name="l00462"></a>00462 m_stream.writeRawBytes(m_imagename, 80);
<a name="l00463"></a>00463
<a name="l00464"></a>00464 m_stream << m_colormap;
<a name="l00465"></a>00465 <span class="keywordflow">for</span> (i = 0; i < 404; i++)
<a name="l00466"></a>00466 m_stream << Q_UINT8(0);
<a name="l00467"></a>00467 }
<a name="l00468"></a>00468
<a name="l00469"></a>00469
<a name="l00470"></a>00470 <span class="keywordtype">void</span> SGIImage::writeRle()
<a name="l00471"></a>00471 {
<a name="l00472"></a>00472 m_rle = 1;
<a name="l00473"></a>00473 kdDebug(399) << <span class="stringliteral">"writing RLE data"</span> << endl;
<a name="l00474"></a>00474 writeHeader();
<a name="l00475"></a>00475 uint i;
<a name="l00476"></a>00476
<a name="l00477"></a>00477 <span class="comment">// write start table</span>
<a name="l00478"></a>00478 <span class="keywordflow">for</span> (i = 0; i < m_numrows; i++)
<a name="l00479"></a>00479 m_stream << Q_UINT32(m_rlevector[m_starttab[i]]->offset());
<a name="l00480"></a>00480
<a name="l00481"></a>00481 <span class="comment">// write length table</span>
<a name="l00482"></a>00482 <span class="keywordflow">for</span> (i = 0; i < m_numrows; i++)
<a name="l00483"></a>00483 m_stream << Q_UINT32(m_rlevector[m_starttab[i]]->size());
<a name="l00484"></a>00484
<a name="l00485"></a>00485 <span class="comment">// write data</span>
<a name="l00486"></a>00486 <span class="keywordflow">for</span> (i = 0; i < m_rlevector.size(); i++)
<a name="l00487"></a>00487 m_rlevector[i]-><a class="codeRef" href="qimageio.html#write">write</a>(m_stream);
<a name="l00488"></a>00488 }
<a name="l00489"></a>00489
<a name="l00490"></a>00490
<a name="l00491"></a>00491 <span class="keywordtype">void</span> SGIImage::writeVerbatim(<span class="keyword">const</span> <a class="codeRef" href="qimage.html">QImage</a>& img)
<a name="l00492"></a>00492 {
<a name="l00493"></a>00493 m_rle = 0;
<a name="l00494"></a>00494 kdDebug(399) << <span class="stringliteral">"writing verbatim data"</span> << endl;
<a name="l00495"></a>00495 writeHeader();
<a name="l00496"></a>00496
<a name="l00497"></a>00497 QRgb *c;
<a name="l00498"></a>00498 <span class="keywordtype">unsigned</span> x, y;
<a name="l00499"></a>00499
<a name="l00500"></a>00500 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00501"></a>00501 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00502"></a>00502 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00503"></a>00503 m_stream << Q_UINT8(qRed(*c++));
<a name="l00504"></a>00504 }
<a name="l00505"></a>00505
<a name="l00506"></a>00506 <span class="keywordflow">if</span> (m_zsize == 1)
<a name="l00507"></a>00507 <span class="keywordflow">return</span>;
<a name="l00508"></a>00508
<a name="l00509"></a>00509 <span class="keywordflow">if</span> (m_zsize != 2) {
<a name="l00510"></a>00510 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00511"></a>00511 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00512"></a>00512 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00513"></a>00513 m_stream << Q_UINT8(qGreen(*c++));
<a name="l00514"></a>00514 }
<a name="l00515"></a>00515
<a name="l00516"></a>00516 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00517"></a>00517 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00518"></a>00518 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00519"></a>00519 m_stream << Q_UINT8(qBlue(*c++));
<a name="l00520"></a>00520 }
<a name="l00521"></a>00521
<a name="l00522"></a>00522 <span class="keywordflow">if</span> (m_zsize == 3)
<a name="l00523"></a>00523 <span class="keywordflow">return</span>;
<a name="l00524"></a>00524 }
<a name="l00525"></a>00525
<a name="l00526"></a>00526 <span class="keywordflow">for</span> (y = 0; y < m_ysize; y++) {
<a name="l00527"></a>00527 c = <span class="keyword">reinterpret_cast<</span>QRgb *<span class="keyword">></span>(img.<a class="codeRef" href="qimage.html#scanLine">scanLine</a>(m_ysize - y - 1));
<a name="l00528"></a>00528 <span class="keywordflow">for</span> (x = 0; x < m_xsize; x++)
<a name="l00529"></a>00529 m_stream << Q_UINT8(qAlpha(*c++));
<a name="l00530"></a>00530 }
<a name="l00531"></a>00531 }
<a name="l00532"></a>00532
<a name="l00533"></a>00533
<a name="l00534"></a>00534 <span class="keywordtype">bool</span> SGIImage::writeImage(<a class="codeRef" href="qimage.html">QImage</a>& img)
<a name="l00535"></a>00535 {
<a name="l00536"></a>00536 kdDebug(399) << <span class="stringliteral">"writing '"</span> << m_io->fileName() << <span class="charliteral">'\''</span> << endl;
<a name="l00537"></a>00537
<a name="l00538"></a>00538 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#allGray">allGray</a>())
<a name="l00539"></a>00539 m_dim = 2, m_zsize = 1;
<a name="l00540"></a>00540 <span class="keywordflow">else</span>
<a name="l00541"></a>00541 m_dim = 3, m_zsize = 3;
<a name="l00542"></a>00542
<a name="l00543"></a>00543 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#hasAlphaBuffer">hasAlphaBuffer</a>())
<a name="l00544"></a>00544 m_dim = 3, m_zsize++;
<a name="l00545"></a>00545
<a name="l00546"></a>00546 img = img.<a class="codeRef" href="qimage.html#convertDepth">convertDepth</a>(32);
<a name="l00547"></a>00547 <span class="keywordflow">if</span> (img.<a class="codeRef" href="qimage.html#isNull">isNull</a>()) {
<a name="l00548"></a>00548 kdDebug(399) << <span class="stringliteral">"can't convert image to depth 32"</span> << endl;
<a name="l00549"></a>00549 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00550"></a>00550 }
<a name="l00551"></a>00551
<a name="l00552"></a>00552 m_bpc = 1;
<a name="l00553"></a>00553 m_xsize = img.<a class="codeRef" href="qimage.html#width">width</a>();
<a name="l00554"></a>00554 m_ysize = img.<a class="codeRef" href="qimage.html#height">height</a>();
<a name="l00555"></a>00555 m_pixmin = ~0;
<a name="l00556"></a>00556 m_pixmax = 0;
<a name="l00557"></a>00557 m_colormap = NORMAL;
<a name="l00558"></a>00558
<a name="l00559"></a>00559 m_numrows = m_ysize * m_zsize;
<a name="l00560"></a>00560
<a name="l00561"></a>00561 m_starttab = <span class="keyword">new</span> Q_UINT32[m_numrows];
<a name="l00562"></a>00562 m_rlemap.setBaseOffset(512 + m_numrows * 2 * <span class="keyword">sizeof</span>(Q_UINT32));
<a name="l00563"></a>00563
<a name="l00564"></a>00564 <span class="keywordflow">if</span> (!scanData(img)) {
<a name="l00565"></a>00565 kdDebug(399) << <span class="stringliteral">"this can't happen"</span> << endl;
<a name="l00566"></a>00566 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00567"></a>00567 }
<a name="l00568"></a>00568
<a name="l00569"></a>00569 m_rlevector = m_rlemap.vector();
<a name="l00570"></a>00570
<a name="l00571"></a>00571 <span class="keywordtype">long</span> verbatim_size = m_numrows * m_xsize;
<a name="l00572"></a>00572 <span class="keywordtype">long</span> rle_size = m_numrows * 2 * <span class="keyword">sizeof</span>(Q_UINT32);
<a name="l00573"></a>00573 <span class="keywordflow">for</span> (uint i = 0; i < m_rlevector.size(); i++)
<a name="l00574"></a>00574 rle_size += m_rlevector[i]->size();
<a name="l00575"></a>00575
<a name="l00576"></a>00576 kdDebug(399) << <span class="stringliteral">"minimum intensity: "</span> << m_pixmin << endl;
<a name="l00577"></a>00577 kdDebug(399) << <span class="stringliteral">"maximum intensity: "</span> << m_pixmax << endl;
<a name="l00578"></a>00578 kdDebug(399) << <span class="stringliteral">"saved scanlines: "</span> << m_numrows - m_rlemap.size() << endl;
<a name="l00579"></a>00579 kdDebug(399) << <span class="stringliteral">"total savings: "</span> << (verbatim_size - rle_size) << <span class="stringliteral">" bytes"</span> << endl;
<a name="l00580"></a>00580 kdDebug(399) << <span class="stringliteral">"compression: "</span> << (rle_size * 100.0 / verbatim_size) << <span class="charliteral">'%'</span> << endl;
<a name="l00581"></a>00581
<a name="l00582"></a>00582 <span class="keywordflow">if</span> (verbatim_size <= rle_size || m_io-><a class="codeRef" href="qimageio.html#quality">quality</a>() > 50)
<a name="l00583"></a>00583 writeVerbatim(img);
<a name="l00584"></a>00584 <span class="keywordflow">else</span>
<a name="l00585"></a>00585 writeRle();
<a name="l00586"></a>00586 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00587"></a>00587 }
<a name="l00588"></a>00588
<a name="l00589"></a>00589
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