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<h1>jpegTools.h File Reference</h1>
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This graph shows which files directly or indirectly include this file:</div>
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<a href="jpegTools_8h_source.html">Go to the source code of this file.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="jpegTools_8h.html#36feb9ccaed70cf0eb75ebdc6b21e42b">scaleJPEG</a> (QString fileIn, QImage &scaledImage, int targetWidth, int targetHeight)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="jpegTools_8h.html#fcce9106838e2c1f2ef66e18c8e4e160">transformJPEG</a> (QString fileIn, QString fileOut, <a class="el" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288">TRANSFORM_CODE</a> transformation)</td></tr>
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<hr><h2>Function Documentation</h2>
<a class="anchor" name="36feb9ccaed70cf0eb75ebdc6b21e42b"></a><!-- doxytag: member="jpegTools.h::scaleJPEG" ref="36feb9ccaed70cf0eb75ebdc6b21e42b" args="(QString fileIn, QImage &scaledImage, int targetWidth, int targetHeight)" -->
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<table class="memname">
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<td class="memname">bool scaleJPEG </td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>fileIn</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">QImage & </td>
<td class="paramname"> <em>scaledImage</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>targetWidth</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>targetHeight</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
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<p>
<p>Definition at line <a class="el" href="jpegTools_8cpp_source.html#l00054">54</a> of file <a class="el" href="jpegTools_8cpp_source.html">jpegTools.cpp</a>.</p>
<p>References <a class="el" href="jpegTools_8cpp_source.html#l00046">GVJPEGFatalError::handler()</a>, and <a class="el" href="jpegTools_8cpp_source.html#l00044">GVJPEGFatalError::mJmpBuffer</a>.</p>
<p>Referenced by <a class="el" href="imageTools_8cpp_source.html#l00171">scaleImage()</a>.</p>
<div class="fragment"><pre class="fragment"><a name="l00056"></a>00056 {
<a name="l00057"></a>00057 <span class="comment">//get jpeg info</span>
<a name="l00058"></a>00058 <span class="keyword">struct </span>jpeg_decompress_struct cinfo;
<a name="l00059"></a>00059
<a name="l00060"></a>00060 <span class="comment">//open file</span>
<a name="l00061"></a>00061 FILE* inputFile=fopen( fileIn.ascii(), <span class="stringliteral">"rb"</span> );
<a name="l00062"></a>00062 <span class="keywordflow">if</span>(!inputFile) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00063"></a>00063
<a name="l00064"></a>00064 <span class="comment">//error checking on jpg file</span>
<a name="l00065"></a>00065 <span class="keyword">struct </span><a class="code" href="structGVJPEGFatalError.html">GVJPEGFatalError</a> jerr;
<a name="l00066"></a>00066 cinfo.err = jpeg_std_error(&jerr);
<a name="l00067"></a>00067 cinfo.err->error_exit = <a class="code" href="structGVJPEGFatalError.html#e8cb251ef57649ad96330aa1e934ea36">GVJPEGFatalError::handler</a>;
<a name="l00068"></a>00068 <span class="keywordflow">if</span> (setjmp(jerr.mJmpBuffer))
<a name="l00069"></a>00069 {
<a name="l00070"></a>00070 jpeg_destroy_decompress(&cinfo);
<a name="l00071"></a>00071 fclose(inputFile);
<a name="l00072"></a>00072 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00073"></a>00073 }
<a name="l00074"></a>00074
<a name="l00075"></a>00075 <span class="comment">//get jpeg resolution</span>
<a name="l00076"></a>00076 jpeg_create_decompress(&cinfo);
<a name="l00077"></a>00077 jpeg_stdio_src(&cinfo, inputFile);
<a name="l00078"></a>00078 jpeg_read_header(&cinfo, TRUE);
<a name="l00079"></a>00079
<a name="l00080"></a>00080 <span class="comment">//find optimal scale fraction (must be power of two)</span>
<a name="l00081"></a>00081 <span class="keywordtype">int</span> origWidth = (int)cinfo.image_width;
<a name="l00082"></a>00082 <span class="keywordtype">int</span> origHeight = (<span class="keywordtype">int</span>)cinfo.image_height;
<a name="l00083"></a>00083 <span class="keywordtype">int</span> num = 1;
<a name="l00084"></a>00084 <span class="keywordtype">int</span> denom = 1;
<a name="l00085"></a>00085
<a name="l00086"></a>00086 <span class="comment">//if image is bigger than target, scale down by adjusting the denominator</span>
<a name="l00087"></a>00087 <span class="keywordflow">if</span>( origWidth > targetWidth || origHeight > targetHeight )
<a name="l00088"></a>00088 {
<a name="l00089"></a>00089 <span class="keywordflow">while</span>( denom < 8 &&
<a name="l00090"></a>00090 ( origWidth / (denom*2) >= targetWidth || origHeight / (denom*2) >= targetHeight )
<a name="l00091"></a>00091 )
<a name="l00092"></a>00092 { denom = denom*2; }
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="comment">//set scaling fraction</span>
<a name="l00096"></a>00096 cinfo.scale_num=num;
<a name="l00097"></a>00097 cinfo.scale_denom=denom;
<a name="l00098"></a>00098
<a name="l00099"></a>00099 <span class="comment">//create intermediary image scaled by power of 2</span>
<a name="l00100"></a>00100 jpeg_start_decompress(&cinfo);
<a name="l00101"></a>00101
<a name="l00102"></a>00102 <span class="keywordflow">switch</span>(cinfo.output_components)
<a name="l00103"></a>00103 {
<a name="l00104"></a>00104 <span class="comment">//Black and White Image</span>
<a name="l00105"></a>00105 <span class="keywordflow">case</span> 1:
<a name="l00106"></a>00106 {
<a name="l00107"></a>00107 scaledImage.create( cinfo.output_width, cinfo.output_height, 8, 256 );
<a name="l00108"></a>00108 <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i<256; i++)
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 scaledImage.setColor(i, qRgb(i,i,i));
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 }
<a name="l00113"></a>00113 <span class="keywordflow">break</span>;
<a name="l00114"></a>00114
<a name="l00115"></a>00115 <span class="comment">//24 or 32 bit color image</span>
<a name="l00116"></a>00116 <span class="keywordflow">case</span> 3:
<a name="l00117"></a>00117 <span class="keywordflow">case</span> 4:
<a name="l00118"></a>00118 scaledImage.create( cinfo.output_width, cinfo.output_height, 32 );
<a name="l00119"></a>00119 <span class="keywordflow">break</span>;
<a name="l00120"></a>00120
<a name="l00121"></a>00121 <span class="comment">//Unknown color depth</span>
<a name="l00122"></a>00122 <span class="keywordflow">default</span>:
<a name="l00123"></a>00123 jpeg_destroy_decompress(&cinfo);
<a name="l00124"></a>00124 fclose(inputFile);
<a name="l00125"></a>00125 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00126"></a>00126 }
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="comment">//fast scale image</span>
<a name="l00129"></a>00129 uchar** lines = scaledImage.jumpTable();
<a name="l00130"></a>00130 <span class="keywordflow">while</span> (cinfo.output_scanline < cinfo.output_height)
<a name="l00131"></a>00131 {
<a name="l00132"></a>00132 jpeg_read_scanlines(&cinfo, lines + cinfo.output_scanline, cinfo.output_height);
<a name="l00133"></a>00133 }
<a name="l00134"></a>00134 jpeg_finish_decompress(&cinfo);
<a name="l00135"></a>00135
<a name="l00136"></a>00136
<a name="l00137"></a>00137 <span class="comment">//expand 8 to 32bits per pixel since QImage wants 32</span>
<a name="l00138"></a>00138 <span class="keywordflow">if</span> ( cinfo.output_components == 1 )
<a name="l00139"></a>00139 {
<a name="l00140"></a>00140 scaledImage = scaledImage.convertDepth( 32, Qt::AutoColor );
<a name="l00141"></a>00141 }
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="comment">//expand 24 to 32bits per pixel since QImage wants 32</span>
<a name="l00144"></a>00144 <span class="keywordflow">if</span> ( cinfo.output_components == 3 )
<a name="l00145"></a>00145 {
<a name="l00146"></a>00146 <span class="keywordflow">for</span> (uint j=0; j<cinfo.output_height; j++)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 uchar *in = scaledImage.scanLine(j) + cinfo.output_width*3;
<a name="l00149"></a>00149 QRgb *out = (QRgb*)( scaledImage.scanLine(j) );
<a name="l00150"></a>00150
<a name="l00151"></a>00151 <span class="keywordflow">for</span> (uint i=cinfo.output_width; i--; )
<a name="l00152"></a>00152 {
<a name="l00153"></a>00153 in-=3;
<a name="l00154"></a>00154 out[i] = qRgb(in[0], in[1], in[2]);
<a name="l00155"></a>00155 }
<a name="l00156"></a>00156 }
<a name="l00157"></a>00157 }
<a name="l00158"></a>00158
<a name="l00159"></a>00159 <span class="comment">//use slower smooth scale technique to scale to final size from intermediate image </span>
<a name="l00160"></a>00160 <span class="keywordflow">if</span>( scaledImage.width() != targetWidth || scaledImage.height() != targetHeight )
<a name="l00161"></a>00161 {
<a name="l00162"></a>00162 <span class="keywordtype">int</span> clampedTargetWidth = targetWidth;
<a name="l00163"></a>00163 <span class="keywordtype">int</span> clampedTargetHeight = targetHeight;
<a name="l00164"></a>00164 <span class="comment">//clamp scaling up to < 2x</span>
<a name="l00165"></a>00165 <span class="keywordflow">if</span>(QMIN( ((<span class="keywordtype">float</span>)targetWidth)/origWidth, ((<span class="keywordtype">float</span>)targetHeight)/origHeight ) > 2)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 clampedTargetWidth = 2*origWidth;
<a name="l00168"></a>00168 clampedTargetHeight = 2*origHeight;
<a name="l00169"></a>00169 }
<a name="l00170"></a>00170
<a name="l00171"></a>00171 scaledImage = scaledImage.smoothScale(clampedTargetWidth, clampedTargetHeight, QImage::ScaleMin);
<a name="l00172"></a>00172 }
<a name="l00173"></a>00173 jpeg_destroy_decompress(&cinfo);
<a name="l00174"></a>00174 fclose(inputFile);
<a name="l00175"></a>00175 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00176"></a>00176 }
</pre></div>
<p>
</div>
</div><p>
<a class="anchor" name="fcce9106838e2c1f2ef66e18c8e4e160"></a><!-- doxytag: member="jpegTools.h::transformJPEG" ref="fcce9106838e2c1f2ef66e18c8e4e160" args="(QString fileIn, QString fileOut, TRANSFORM_CODE transformation)" -->
<div class="memitem">
<div class="memproto">
<table class="memname">
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<td class="memname">bool transformJPEG </td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>fileIn</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>fileOut</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288">TRANSFORM_CODE</a> </td>
<td class="paramname"> <em>transformation</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
<p>
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!<p>
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
<p>Definition at line <a class="el" href="jpegTools_8cpp_source.html#l00178">178</a> of file <a class="el" href="jpegTools_8cpp_source.html">jpegTools.cpp</a>.</p>
<p>References <a class="el" href="imageTools_8h_source.html#l00028">FLIP_H</a>, <a class="el" href="imageTools_8h_source.html#l00029">FLIP_V</a>, <a class="el" href="jpegInternal_8h_source.html#l00069">jpeg_transform_info::force_grayscale</a>, <a class="el" href="jpegInternal_8h.html#8b7f34edce3037c64a42d7de0af24aaf">jcopy_markers_execute()</a>, <a class="el" href="jpegInternal_8h.html#c39445ce130600a507ce41e7f76c54da">jcopy_markers_setup()</a>, <a class="el" href="jpegInternal_8h_source.html#l00017">JCOPYOPT_COMMENTS</a>, <a class="el" href="jpegInternal_8h.html#57beb980c0cf186d46e1dca71df4f156">jtransform_adjust_parameters()</a>, <a class="el" href="jpegInternal_8h.html#c2a41f9bd0eba30af6992bdf94570d24">jtransform_execute_transformation()</a>, <a class="el" href="jpegInternal_8h.html#758e220b145193fe08dd975f60421438">jtransform_request_workspace()</a>, <a class="el" href="jpegInternal_8h_source.html#l00024">JXFORM_FLIP_H</a>, <a class="el" href="jpegInternal_8h_source.html#l00025">JXFORM_FLIP_V</a>, <a class="el" href="jpegInternal_8h_source.html#l00030">JXFORM_ROT_270</a>, <a class="el" href="jpegInternal_8h_source.html#l00028">JXFORM_ROT_90</a>, <a class="el" href="imageTools_8h_source.html#l00027">ROTATE_270</a>, <a class="el" href="imageTools_8h_source.html#l00026">ROTATE_90</a>, <a class="el" href="jpegInternal_8h_source.html#l00067">jpeg_transform_info::transform</a>, and <a class="el" href="jpegInternal_8h_source.html#l00068">jpeg_transform_info::trim</a>.</p>
<p>Referenced by <a class="el" href="imageTools_8cpp_source.html#l00112">transformImage()</a>.</p>
<div class="fragment"><pre class="fragment"><a name="l00179"></a>00179 {
<a name="l00180"></a>00180 <span class="keyword">struct </span>jpeg_decompress_struct srcinfo;
<a name="l00181"></a>00181 <span class="keyword">struct </span>jpeg_compress_struct dstinfo;
<a name="l00182"></a>00182 <span class="keyword">struct </span><a class="code" href="classjpeg__error__mgr.html">jpeg_error_mgr</a> jsrcerr, jdsterr;
<a name="l00183"></a>00183 FILE * input_file;
<a name="l00184"></a>00184 FILE * output_file;
<a name="l00185"></a>00185 <a class="code" href="structjpeg__transform__info.html">jpeg_transform_info</a> transformoption;
<a name="l00186"></a>00186 jvirt_barray_ptr * src_coef_arrays;
<a name="l00187"></a>00187 jvirt_barray_ptr * dst_coef_arrays;
<a name="l00188"></a>00188
<a name="l00189"></a>00189 <span class="comment">//setup transofrmation option struct, this was done in jpegtran by the</span>
<a name="l00190"></a>00190 <span class="comment">//parse_switches function in jpegtran.c</span>
<a name="l00191"></a>00191 <span class="keywordflow">switch</span>( transformation )
<a name="l00192"></a>00192 {
<a name="l00193"></a>00193 <span class="keywordflow">case</span> <a class="code" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288685062467b0c1a3164556335b467c886">ROTATE_90</a>:
<a name="l00194"></a>00194 transformoption.<a class="code" href="structjpeg__transform__info.html#a3227394d9b01bae8543faf79e9c5fe8">transform</a> = <a class="code" href="jpegInternal_8h.html#1133cd2487f1134aed16868dc1f04315f40c41fbed3c0713a2506c5a09b148eb">JXFORM_ROT_90</a>;
<a name="l00195"></a>00195 <span class="keywordflow">break</span>;
<a name="l00196"></a>00196 <span class="keywordflow">case</span> <a class="code" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288554e734d2a23790b248c5ce39816c18f">ROTATE_270</a>:
<a name="l00197"></a>00197 transformoption.<a class="code" href="structjpeg__transform__info.html#a3227394d9b01bae8543faf79e9c5fe8">transform</a> = <a class="code" href="jpegInternal_8h.html#1133cd2487f1134aed16868dc1f043152f7ec56736e086e309eef1a593bd3e67">JXFORM_ROT_270</a>;
<a name="l00198"></a>00198 <span class="keywordflow">break</span>;
<a name="l00199"></a>00199 <span class="keywordflow">case</span> <a class="code" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288a02c13f8f08154ca2e58c488c922fbe5">FLIP_H</a>:
<a name="l00200"></a>00200 transformoption.<a class="code" href="structjpeg__transform__info.html#a3227394d9b01bae8543faf79e9c5fe8">transform</a> = <a class="code" href="jpegInternal_8h.html#1133cd2487f1134aed16868dc1f043151f49341c48b481f2e8ed911840a3fbe3">JXFORM_FLIP_H</a>;
<a name="l00201"></a>00201 <span class="keywordflow">break</span>;
<a name="l00202"></a>00202 <span class="keywordflow">case</span> <a class="code" href="imageTools_8h.html#d6b8916a355278afb7cd35f14afc9288127171d15d7e5849705973e163393c71">FLIP_V</a>:
<a name="l00203"></a>00203 transformoption.<a class="code" href="structjpeg__transform__info.html#a3227394d9b01bae8543faf79e9c5fe8">transform</a> = <a class="code" href="jpegInternal_8h.html#1133cd2487f1134aed16868dc1f04315e522c3e42f2258a43ec693632f30cda4">JXFORM_FLIP_V</a>;
<a name="l00204"></a>00204 <span class="keywordflow">break</span>;
<a name="l00205"></a>00205 <span class="keywordflow">default</span>:
<a name="l00206"></a>00206 <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00207"></a>00207 }
<a name="l00208"></a>00208 transformoption.<a class="code" href="structjpeg__transform__info.html#4f1f979322463d2c02a307047f0cf6b7">trim</a> = TRUE;
<a name="l00209"></a>00209 transformoption.<a class="code" href="structjpeg__transform__info.html#26d925edb18e0095056b38312fb86e53">force_grayscale</a> = FALSE;
<a name="l00210"></a>00210
<a name="l00211"></a>00211 <span class="comment">// Initialize the JPEG decompression object with default error handling. </span>
<a name="l00212"></a>00212 srcinfo.err = jpeg_std_error(&jsrcerr);
<a name="l00213"></a>00213 jpeg_create_decompress(&srcinfo);
<a name="l00214"></a>00214
<a name="l00215"></a>00215 <span class="comment">// Initialize the JPEG compression object with default error handling. </span>
<a name="l00216"></a>00216 dstinfo.err = jpeg_std_error(&jdsterr);
<a name="l00217"></a>00217 jpeg_create_compress(&dstinfo);
<a name="l00218"></a>00218
<a name="l00220"></a>00220 <span class="comment">//what does this stuff do?</span>
<a name="l00221"></a>00221 dstinfo.err->trace_level = 0;
<a name="l00222"></a>00222 jsrcerr.trace_level = jdsterr.trace_level;
<a name="l00223"></a>00223 srcinfo.mem->max_memory_to_use = dstinfo.mem->max_memory_to_use;
<a name="l00225"></a>00225
<a name="l00226"></a>00226 <span class="comment">//open input and output files</span>
<a name="l00227"></a>00227 <span class="keywordflow">if</span> ((input_file = fopen(QFile::encodeName(fileIn), <span class="stringliteral">"rb"</span>)) == NULL) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00228"></a>00228 <span class="keywordflow">if</span> ((output_file = fopen(QFile::encodeName(fileOut), <span class="stringliteral">"wb"</span>)) == NULL) <span class="keywordflow">return</span> <span class="keyword">false</span>;
<a name="l00229"></a>00229
<a name="l00230"></a>00230 <span class="comment">// Specify data source for decompression </span>
<a name="l00231"></a>00231 jpeg_stdio_src(&srcinfo, input_file);
<a name="l00232"></a>00232
<a name="l00233"></a>00233 <span class="comment">// Enable saving of extra markers that we want to copy </span>
<a name="l00234"></a>00234 <a class="code" href="jpegInternal_8h.html#c39445ce130600a507ce41e7f76c54da">jcopy_markers_setup</a>(&srcinfo, <a class="code" href="jpegInternal_8h.html#65c3abad1d72d7ac3f89ef621613c553c9a81502d8ebd4eae5acc77d9523ae42">JCOPYOPT_COMMENTS</a>);
<a name="l00235"></a>00235
<a name="l00236"></a>00236 <span class="comment">// Read file header </span>
<a name="l00237"></a>00237 (void) jpeg_read_header(&srcinfo, TRUE);
<a name="l00238"></a>00238
<a name="l00239"></a>00239 <span class="comment">// Any space needed by a transform option must be requested before</span>
<a name="l00240"></a>00240 <span class="comment">// jpeg_read_coefficients so that memory allocation will be done right.</span>
<a name="l00241"></a>00241 <a class="code" href="jpegInternal_8h.html#758e220b145193fe08dd975f60421438">jtransform_request_workspace</a>(&srcinfo, &transformoption);
<a name="l00242"></a>00242
<a name="l00243"></a>00243 <span class="comment">// Read source file as DCT coefficients </span>
<a name="l00244"></a>00244 src_coef_arrays = jpeg_read_coefficients(&srcinfo);
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="comment">// Initialize destination compression parameters from source values </span>
<a name="l00247"></a>00247 jpeg_copy_critical_parameters(&srcinfo, &dstinfo);
<a name="l00248"></a>00248
<a name="l00249"></a>00249 <span class="comment">// Adjust destination parameters if required by transform options;</span>
<a name="l00250"></a>00250 <span class="comment">// also find out which set of coefficient arrays will hold the output. </span>
<a name="l00251"></a>00251 dst_coef_arrays = <a class="code" href="jpegInternal_8h.html#57beb980c0cf186d46e1dca71df4f156">jtransform_adjust_parameters</a>(&dstinfo, src_coef_arrays,
<a name="l00252"></a>00252 &transformoption);
<a name="l00253"></a>00253
<a name="l00254"></a>00254 <span class="comment">// Specify data destination for compression </span>
<a name="l00255"></a>00255 jpeg_stdio_dest(&dstinfo, output_file);
<a name="l00256"></a>00256
<a name="l00257"></a>00257 <span class="comment">// Start compressor (note no image data is actually written here) </span>
<a name="l00258"></a>00258 jpeg_write_coefficients(&dstinfo, dst_coef_arrays);
<a name="l00259"></a>00259
<a name="l00260"></a>00260 <span class="comment">// Copy to the output file any extra markers that we want to preserve </span>
<a name="l00261"></a>00261 <a class="code" href="jpegInternal_8h.html#8b7f34edce3037c64a42d7de0af24aaf">jcopy_markers_execute</a>(&srcinfo, &dstinfo);
<a name="l00262"></a>00262
<a name="l00263"></a>00263 <span class="comment">// Execute image transformation, if any </span>
<a name="l00264"></a>00264 <a class="code" href="jpegInternal_8h.html#c2a41f9bd0eba30af6992bdf94570d24">jtransform_execute_transformation</a>(&srcinfo, &dstinfo,
<a name="l00265"></a>00265 src_coef_arrays,
<a name="l00266"></a>00266 &transformoption);
<a name="l00267"></a>00267
<a name="l00268"></a>00268 <span class="comment">// Finish compression and release memory </span>
<a name="l00269"></a>00269 jpeg_finish_compress(&dstinfo);
<a name="l00270"></a>00270 jpeg_destroy_compress(&dstinfo);
<a name="l00271"></a>00271 (void) jpeg_finish_decompress(&srcinfo);
<a name="l00272"></a>00272 jpeg_destroy_decompress(&srcinfo);
<a name="l00273"></a>00273
<a name="l00274"></a>00274 <span class="comment">// Close files</span>
<a name="l00275"></a>00275 fclose(input_file);
<a name="l00276"></a>00276 fclose(output_file);
<a name="l00277"></a>00277
<a name="l00278"></a>00278 <span class="comment">//success</span>
<a name="l00279"></a>00279 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00280"></a>00280 }
</pre></div>
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distrib
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Mandriva
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