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-<h1>examples/PIPS/antiword/src/imgexam.c</h1><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
-<a name="l00002"></a>00002 <span class="comment"> * imgexam.c</span>
-<a name="l00003"></a>00003 <span class="comment"> * Copyright (C) 2000-2004 A.J. van Os; Released under GNU GPL</span>
-<a name="l00004"></a>00004 <span class="comment"> *</span>
-<a name="l00005"></a>00005 <span class="comment"> * Description:</span>
-<a name="l00006"></a>00006 <span class="comment"> * Functions to examine image headers</span>
-<a name="l00007"></a>00007 <span class="comment"> *</span>
-<a name="l00008"></a>00008 <span class="comment"> *================================================================</span>
-<a name="l00009"></a>00009 <span class="comment"> * Part of this software is based on:</span>
-<a name="l00010"></a>00010 <span class="comment"> * jpeg2ps - convert JPEG compressed images to PostScript Level 2</span>
-<a name="l00011"></a>00011 <span class="comment"> * Copyright (C) 1994-99 Thomas Merz (tm@muc.de)</span>
-<a name="l00012"></a>00012 <span class="comment"> *================================================================</span>
-<a name="l00013"></a>00013 <span class="comment"> * The credit should go to him, but all the bugs are mine.</span>
-<a name="l00014"></a>00014 <span class="comment"> */</span>
-<a name="l00015"></a>00015
-<a name="l00016"></a>00016 <span class="preprocessor">#include <stdio.h></span>
-<a name="l00017"></a>00017 <span class="preprocessor">#include <string.h></span>
-<a name="l00018"></a>00018 <span class="preprocessor">#include <ctype.h></span>
-<a name="l00019"></a>00019 <span class="preprocessor">#include "antiword.h"</span>
-<a name="l00020"></a>00020
-<a name="l00021"></a>00021 <span class="comment">/* BMP compression types */</span>
-<a name="l00022"></a>00022 <span class="preprocessor">#define BI_RGB 0</span>
-<a name="l00023"></a>00023 <span class="preprocessor"></span><span class="preprocessor">#define BI_RLE8 1</span>
-<a name="l00024"></a>00024 <span class="preprocessor"></span><span class="preprocessor">#define BI_RLE4 2</span>
-<a name="l00025"></a>00025 <span class="preprocessor"></span>
-<a name="l00026"></a>00026 <span class="comment">/* PNG colortype bits */</span>
-<a name="l00027"></a>00027 <span class="preprocessor">#define PNG_CB_PALETTE 0x01</span>
-<a name="l00028"></a>00028 <span class="preprocessor"></span><span class="preprocessor">#define PNG_CB_COLOR 0x02</span>
-<a name="l00029"></a>00029 <span class="preprocessor"></span><span class="preprocessor">#define PNG_CB_ALPHA 0x04</span>
-<a name="l00030"></a>00030 <span class="preprocessor"></span>
-<a name="l00031"></a>00031 <span class="comment">/* Instance signature */</span>
-<a name="l00032"></a>00032 <span class="preprocessor">#define MSOBI_WMF 0x0216</span>
-<a name="l00033"></a>00033 <span class="preprocessor"></span><span class="preprocessor">#define MSOBI_EMF 0x03d4</span>
-<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="preprocessor">#define MSOBI_PICT 0x0542</span>
-<a name="l00035"></a>00035 <span class="preprocessor"></span><span class="preprocessor">#define MSOBI_PNG 0x06e0</span>
-<a name="l00036"></a>00036 <span class="preprocessor"></span><span class="preprocessor">#define MSOBI_JPEG 0x046a</span>
-<a name="l00037"></a>00037 <span class="preprocessor"></span><span class="preprocessor">#define MSOBI_DIB 0x07a8</span>
-<a name="l00038"></a>00038 <span class="preprocessor"></span>
-<a name="l00039"></a>00039 <span class="comment">/* The following enum is stolen from the IJG JPEG library */</span>
-<a name="l00040"></a>00040 <span class="keyword">typedef</span> <span class="keyword">enum</span> { <span class="comment">/* JPEG marker codes */</span>
-<a name="l00041"></a>00041 M_SOF0 = 0xc0, <span class="comment">/* baseline DCT */</span>
-<a name="l00042"></a>00042 M_SOF1 = 0xc1, <span class="comment">/* extended sequential DCT */</span>
-<a name="l00043"></a>00043 M_SOF2 = 0xc2, <span class="comment">/* progressive DCT */</span>
-<a name="l00044"></a>00044 M_SOF3 = 0xc3, <span class="comment">/* lossless (sequential) */</span>
-<a name="l00045"></a>00045
-<a name="l00046"></a>00046 M_SOF5 = 0xc5, <span class="comment">/* differential sequential DCT */</span>
-<a name="l00047"></a>00047 M_SOF6 = 0xc6, <span class="comment">/* differential progressive DCT */</span>
-<a name="l00048"></a>00048 M_SOF7 = 0xc7, <span class="comment">/* differential lossless */</span>
-<a name="l00049"></a>00049
-<a name="l00050"></a>00050 M_JPG = 0xc8, <span class="comment">/* JPEG extensions */</span>
-<a name="l00051"></a>00051 M_SOF9 = 0xc9, <span class="comment">/* extended sequential DCT */</span>
-<a name="l00052"></a>00052 M_SOF10 = 0xca, <span class="comment">/* progressive DCT */</span>
-<a name="l00053"></a>00053 M_SOF11 = 0xcb, <span class="comment">/* lossless (sequential) */</span>
-<a name="l00054"></a>00054
-<a name="l00055"></a>00055 M_SOF13 = 0xcd, <span class="comment">/* differential sequential DCT */</span>
-<a name="l00056"></a>00056 M_SOF14 = 0xce, <span class="comment">/* differential progressive DCT */</span>
-<a name="l00057"></a>00057 M_SOF15 = 0xcf, <span class="comment">/* differential lossless */</span>
-<a name="l00058"></a>00058
-<a name="l00059"></a>00059 M_DHT = 0xc4, <span class="comment">/* define Huffman tables */</span>
-<a name="l00060"></a>00060
-<a name="l00061"></a>00061 M_DAC = 0xcc, <span class="comment">/* define arithmetic conditioning table */</span>
-<a name="l00062"></a>00062
-<a name="l00063"></a>00063 M_RST0 = 0xd0, <span class="comment">/* restart */</span>
-<a name="l00064"></a>00064 M_RST1 = 0xd1, <span class="comment">/* restart */</span>
-<a name="l00065"></a>00065 M_RST2 = 0xd2, <span class="comment">/* restart */</span>
-<a name="l00066"></a>00066 M_RST3 = 0xd3, <span class="comment">/* restart */</span>
-<a name="l00067"></a>00067 M_RST4 = 0xd4, <span class="comment">/* restart */</span>
-<a name="l00068"></a>00068 M_RST5 = 0xd5, <span class="comment">/* restart */</span>
-<a name="l00069"></a>00069 M_RST6 = 0xd6, <span class="comment">/* restart */</span>
-<a name="l00070"></a>00070 M_RST7 = 0xd7, <span class="comment">/* restart */</span>
-<a name="l00071"></a>00071
-<a name="l00072"></a>00072 M_SOI = 0xd8, <span class="comment">/* start of image */</span>
-<a name="l00073"></a>00073 M_EOI = 0xd9, <span class="comment">/* end of image */</span>
-<a name="l00074"></a>00074 M_SOS = 0xda, <span class="comment">/* start of scan */</span>
-<a name="l00075"></a>00075 M_DQT = 0xdb, <span class="comment">/* define quantization tables */</span>
-<a name="l00076"></a>00076 M_DNL = 0xdc, <span class="comment">/* define number of lines */</span>
-<a name="l00077"></a>00077 M_DRI = 0xdd, <span class="comment">/* define restart interval */</span>
-<a name="l00078"></a>00078 M_DHP = 0xde, <span class="comment">/* define hierarchical progression */</span>
-<a name="l00079"></a>00079 M_EXP = 0xdf, <span class="comment">/* expand reference image(s) */</span>
-<a name="l00080"></a>00080
-<a name="l00081"></a>00081 M_APP0 = 0xe0, <span class="comment">/* application marker, used for JFIF */</span>
-<a name="l00082"></a>00082 M_APP1 = 0xe1, <span class="comment">/* application marker */</span>
-<a name="l00083"></a>00083 M_APP2 = 0xe2, <span class="comment">/* application marker */</span>
-<a name="l00084"></a>00084 M_APP3 = 0xe3, <span class="comment">/* application marker */</span>
-<a name="l00085"></a>00085 M_APP4 = 0xe4, <span class="comment">/* application marker */</span>
-<a name="l00086"></a>00086 M_APP5 = 0xe5, <span class="comment">/* application marker */</span>
-<a name="l00087"></a>00087 M_APP6 = 0xe6, <span class="comment">/* application marker */</span>
-<a name="l00088"></a>00088 M_APP7 = 0xe7, <span class="comment">/* application marker */</span>
-<a name="l00089"></a>00089 M_APP8 = 0xe8, <span class="comment">/* application marker */</span>
-<a name="l00090"></a>00090 M_APP9 = 0xe9, <span class="comment">/* application marker */</span>
-<a name="l00091"></a>00091 M_APP10 = 0xea, <span class="comment">/* application marker */</span>
-<a name="l00092"></a>00092 M_APP11 = 0xeb, <span class="comment">/* application marker */</span>
-<a name="l00093"></a>00093 M_APP12 = 0xec, <span class="comment">/* application marker */</span>
-<a name="l00094"></a>00094 M_APP13 = 0xed, <span class="comment">/* application marker */</span>
-<a name="l00095"></a>00095 M_APP14 = 0xee, <span class="comment">/* application marker, used by Adobe */</span>
-<a name="l00096"></a>00096 M_APP15 = 0xef, <span class="comment">/* application marker */</span>
-<a name="l00097"></a>00097
-<a name="l00098"></a>00098 M_JPG0 = 0xf0, <span class="comment">/* reserved for JPEG extensions */</span>
-<a name="l00099"></a>00099 M_JPG13 = 0xfd, <span class="comment">/* reserved for JPEG extensions */</span>
-<a name="l00100"></a>00100 M_COM = 0xfe, <span class="comment">/* comment */</span>
-<a name="l00101"></a>00101
-<a name="l00102"></a>00102 M_TEM = 0x01 <span class="comment">/* temporary use */</span>
-<a name="l00103"></a>00103 } JPEG_MARKER;
-<a name="l00104"></a>00104
-<a name="l00105"></a>00105
-<a name="l00106"></a>00106 <span class="comment">/*</span>
-<a name="l00107"></a>00107 <span class="comment"> * bFillPaletteDIB - fill the palette part of the imagesdata</span>
-<a name="l00108"></a>00108 <span class="comment"> *</span>
-<a name="l00109"></a>00109 <span class="comment"> * returns TRUE if the images must be a color image, otherwise FALSE;</span>
-<a name="l00110"></a>00110 <span class="comment"> */</span>
-<a name="l00111"></a>00111 <span class="keyword">static</span> BOOL
-<a name="l00112"></a>00112 bFillPaletteDIB(FILE *pFile, imagedata_type *pImg, BOOL bNewFormat)
-<a name="l00113"></a>00113 {
-<a name="l00114"></a>00114 <span class="keywordtype">int</span> iIndex;
-<a name="l00115"></a>00115 BOOL bIsColorPalette;
-<a name="l00116"></a>00116
-<a name="l00117"></a>00117 fail(pFile == NULL);
-<a name="l00118"></a>00118 fail(pImg == NULL);
-<a name="l00119"></a>00119
-<a name="l00120"></a>00120 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent > 8) {
-<a name="l00121"></a>00121 <span class="comment">/* No palette, image uses more than 256 colors */</span>
-<a name="l00122"></a>00122 <span class="keywordflow">return</span> TRUE;
-<a name="l00123"></a>00123 }
-<a name="l00124"></a>00124
-<a name="l00125"></a>00125 <span class="keywordflow">if</span> (pImg->iColorsUsed <= 0) {
-<a name="l00126"></a>00126 <span class="comment">/* Not specified, so compute the number of colors used */</span>
-<a name="l00127"></a>00127 pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
-<a name="l00128"></a>00128 }
-<a name="l00129"></a>00129
-<a name="l00130"></a>00130 fail(pImg->iColorsUsed > 256);
-<a name="l00131"></a>00131 <span class="keywordflow">if</span> (pImg->iColorsUsed > 256) {
-<a name="l00132"></a>00132 pImg->iColorsUsed = 256;
-<a name="l00133"></a>00133 }
-<a name="l00134"></a>00134
-<a name="l00135"></a>00135 bIsColorPalette = FALSE;
-<a name="l00136"></a>00136 <span class="keywordflow">for</span> (iIndex = 0; iIndex < pImg->iColorsUsed; iIndex++) {
-<a name="l00137"></a>00137 <span class="comment">/* From BGR order to RGB order */</span>
-<a name="l00138"></a>00138 pImg->aucPalette[iIndex][2] = (UCHAR)iNextByte(pFile);
-<a name="l00139"></a>00139 pImg->aucPalette[iIndex][1] = (UCHAR)iNextByte(pFile);
-<a name="l00140"></a>00140 pImg->aucPalette[iIndex][0] = (UCHAR)iNextByte(pFile);
-<a name="l00141"></a>00141 <span class="keywordflow">if</span> (bNewFormat) {
-<a name="l00142"></a>00142 (void)iNextByte(pFile);
-<a name="l00143"></a>00143 }
-<a name="l00144"></a>00144 NO_DBG_PRINT_BLOCK(pImg->aucPalette[iIndex], 3);
-<a name="l00145"></a>00145 <span class="keywordflow">if</span> (pImg->aucPalette[iIndex][0] !=
-<a name="l00146"></a>00146 pImg->aucPalette[iIndex][1] ||
-<a name="l00147"></a>00147 pImg->aucPalette[iIndex][1] !=
-<a name="l00148"></a>00148 pImg->aucPalette[iIndex][2]) {
-<a name="l00149"></a>00149 bIsColorPalette = TRUE;
-<a name="l00150"></a>00150 }
-<a name="l00151"></a>00151 }
-<a name="l00152"></a>00152
-<a name="l00153"></a>00153 <span class="keywordflow">return</span> bIsColorPalette;
-<a name="l00154"></a>00154 } <span class="comment">/* end of bFillPaletteDIB */</span>
-<a name="l00155"></a>00155
-<a name="l00156"></a>00156 <span class="comment">/*</span>
-<a name="l00157"></a>00157 <span class="comment"> * bExamineDIB - Examine a DIB header</span>
-<a name="l00158"></a>00158 <span class="comment"> *</span>
-<a name="l00159"></a>00159 <span class="comment"> * return TRUE if successful, otherwise FALSE</span>
-<a name="l00160"></a>00160 <span class="comment"> */</span>
-<a name="l00161"></a>00161 <span class="keyword">static</span> BOOL
-<a name="l00162"></a>00162 bExamineDIB(FILE *pFile, imagedata_type *pImg)
-<a name="l00163"></a>00163 {
-<a name="l00164"></a>00164 <span class="keywordtype">size_t</span> tHeaderSize;
-<a name="l00165"></a>00165 <span class="keywordtype">int</span> iPlanes, iCompression;
-<a name="l00166"></a>00166
-<a name="l00167"></a>00167 tHeaderSize = (size_t)ulNextLong(pFile);
-<a name="l00168"></a>00168 <span class="keywordflow">switch</span> (tHeaderSize) {
-<a name="l00169"></a>00169 <span class="keywordflow">case</span> 12:
-<a name="l00170"></a>00170 pImg->iWidth = (int)usNextWord(pFile);
-<a name="l00171"></a>00171 pImg->iHeight = (int)usNextWord(pFile);
-<a name="l00172"></a>00172 iPlanes = (int)usNextWord(pFile);
-<a name="l00173"></a>00173 pImg->uiBitsPerComponent = (UINT)usNextWord(pFile);
-<a name="l00174"></a>00174 iCompression = BI_RGB;
-<a name="l00175"></a>00175 pImg->iColorsUsed = 0;
-<a name="l00176"></a>00176 <span class="keywordflow">break</span>;
-<a name="l00177"></a>00177 <span class="keywordflow">case</span> 40:
-<a name="l00178"></a>00178 <span class="keywordflow">case</span> 64:
-<a name="l00179"></a>00179 pImg->iWidth = (int)ulNextLong(pFile);
-<a name="l00180"></a>00180 pImg->iHeight = (int)ulNextLong(pFile);
-<a name="l00181"></a>00181 iPlanes = (int)usNextWord(pFile);
-<a name="l00182"></a>00182 pImg->uiBitsPerComponent = (UINT)usNextWord(pFile);
-<a name="l00183"></a>00183 iCompression = (int)ulNextLong(pFile);
-<a name="l00184"></a>00184 (void)tSkipBytes(pFile, 12);
-<a name="l00185"></a>00185 pImg->iColorsUsed = (int)ulNextLong(pFile);
-<a name="l00186"></a>00186 (void)tSkipBytes(pFile, tHeaderSize - 36);
-<a name="l00187"></a>00187 <span class="keywordflow">break</span>;
-<a name="l00188"></a>00188 <span class="keywordflow">default</span>:
-<a name="l00189"></a>00189 DBG_DEC(tHeaderSize);
-<a name="l00190"></a>00190 <span class="keywordflow">return</span> FALSE;
-<a name="l00191"></a>00191 }
-<a name="l00192"></a>00192 DBG_DEC(pImg->iWidth);
-<a name="l00193"></a>00193 DBG_DEC(pImg->iHeight);
-<a name="l00194"></a>00194 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00195"></a>00195 DBG_DEC(iCompression);
-<a name="l00196"></a>00196 DBG_DEC(pImg->iColorsUsed);
-<a name="l00197"></a>00197
-<a name="l00198"></a>00198 <span class="comment">/* Do some sanity checks with the parameters */</span>
-<a name="l00199"></a>00199 <span class="keywordflow">if</span> (iPlanes != 1) {
-<a name="l00200"></a>00200 DBG_DEC(iPlanes);
-<a name="l00201"></a>00201 <span class="keywordflow">return</span> FALSE;
-<a name="l00202"></a>00202 }
-<a name="l00203"></a>00203 <span class="keywordflow">if</span> (pImg->iWidth <= 0 || pImg->iHeight <= 0) {
-<a name="l00204"></a>00204 DBG_DEC(pImg->iWidth);
-<a name="l00205"></a>00205 DBG_DEC(pImg->iHeight);
-<a name="l00206"></a>00206 <span class="keywordflow">return</span> FALSE;
-<a name="l00207"></a>00207 }
-<a name="l00208"></a>00208 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent != 1 && pImg->uiBitsPerComponent != 4 &&
-<a name="l00209"></a>00209 pImg->uiBitsPerComponent != 8 && pImg->uiBitsPerComponent != 24) {
-<a name="l00210"></a>00210 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00211"></a>00211 <span class="keywordflow">return</span> FALSE;
-<a name="l00212"></a>00212 }
-<a name="l00213"></a>00213 <span class="keywordflow">if</span> (iCompression != BI_RGB &&
-<a name="l00214"></a>00214 (pImg->uiBitsPerComponent == 1 || pImg->uiBitsPerComponent == 24)) {
-<a name="l00215"></a>00215 <span class="keywordflow">return</span> FALSE;
-<a name="l00216"></a>00216 }
-<a name="l00217"></a>00217 <span class="keywordflow">if</span> (iCompression == BI_RLE8 && pImg->uiBitsPerComponent == 4) {
-<a name="l00218"></a>00218 <span class="keywordflow">return</span> FALSE;
-<a name="l00219"></a>00219 }
-<a name="l00220"></a>00220 <span class="keywordflow">if</span> (iCompression == BI_RLE4 && pImg->uiBitsPerComponent == 8) {
-<a name="l00221"></a>00221 <span class="keywordflow">return</span> FALSE;
-<a name="l00222"></a>00222 }
-<a name="l00223"></a>00223
-<a name="l00224"></a>00224 <span class="keywordflow">switch</span> (iCompression) {
-<a name="l00225"></a>00225 <span class="keywordflow">case</span> BI_RGB:
-<a name="l00226"></a>00226 pImg->eCompression = compression_none;
-<a name="l00227"></a>00227 <span class="keywordflow">break</span>;
-<a name="l00228"></a>00228 <span class="keywordflow">case</span> BI_RLE4:
-<a name="l00229"></a>00229 pImg->eCompression = compression_rle4;
-<a name="l00230"></a>00230 <span class="keywordflow">break</span>;
-<a name="l00231"></a>00231 <span class="keywordflow">case</span> BI_RLE8:
-<a name="l00232"></a>00232 pImg->eCompression = compression_rle8;
-<a name="l00233"></a>00233 <span class="keywordflow">break</span>;
-<a name="l00234"></a>00234 <span class="keywordflow">default</span>:
-<a name="l00235"></a>00235 DBG_DEC(iCompression);
-<a name="l00236"></a>00236 <span class="keywordflow">return</span> FALSE;
-<a name="l00237"></a>00237 }
-<a name="l00238"></a>00238
-<a name="l00239"></a>00239 pImg->bColorImage = bFillPaletteDIB(pFile, pImg, tHeaderSize > 12);
-<a name="l00240"></a>00240
-<a name="l00241"></a>00241 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent <= 8) {
-<a name="l00242"></a>00242 pImg->iComponents = 1;
-<a name="l00243"></a>00243 } <span class="keywordflow">else</span> {
-<a name="l00244"></a>00244 pImg->iComponents = (int)(pImg->uiBitsPerComponent / 8);
-<a name="l00245"></a>00245 }
-<a name="l00246"></a>00246
-<a name="l00247"></a>00247 <span class="keywordflow">return</span> TRUE;
-<a name="l00248"></a>00248 } <span class="comment">/* end of bExamineDIB */</span>
-<a name="l00249"></a>00249
-<a name="l00250"></a>00250 <span class="comment">/*</span>
-<a name="l00251"></a>00251 <span class="comment"> * iNextMarker - read the next JPEG marker</span>
-<a name="l00252"></a>00252 <span class="comment"> */</span>
-<a name="l00253"></a>00253 <span class="keyword">static</span> <span class="keywordtype">int</span>
-<a name="l00254"></a>00254 iNextMarker(FILE *pFile)
-<a name="l00255"></a>00255 {
-<a name="l00256"></a>00256 <span class="keywordtype">int</span> iMarker;
-<a name="l00257"></a>00257
-<a name="l00258"></a>00258 <span class="keywordflow">do</span> {
-<a name="l00259"></a>00259 <span class="keywordflow">do</span> {
-<a name="l00260"></a>00260 iMarker = iNextByte(pFile);
-<a name="l00261"></a>00261 } <span class="keywordflow">while</span> (iMarker != 0xff && iMarker != EOF);
-<a name="l00262"></a>00262 <span class="keywordflow">if</span> (iMarker == EOF) {
-<a name="l00263"></a>00263 <span class="keywordflow">return</span> EOF;
-<a name="l00264"></a>00264 }
-<a name="l00265"></a>00265 <span class="keywordflow">do</span> {
-<a name="l00266"></a>00266 iMarker = iNextByte(pFile);
-<a name="l00267"></a>00267 } <span class="keywordflow">while</span> (iMarker == 0xff);
-<a name="l00268"></a>00268 } <span class="keywordflow">while</span> (iMarker == 0x00); <span class="comment">/* repeat if ff/00 */</span>
-<a name="l00269"></a>00269
-<a name="l00270"></a>00270 <span class="keywordflow">return</span> iMarker;
-<a name="l00271"></a>00271 } <span class="comment">/* end of iNextMarker */</span>
-<a name="l00272"></a>00272
-<a name="l00273"></a>00273 <span class="comment">/*</span>
-<a name="l00274"></a>00274 <span class="comment"> * bExamineJPEG - Examine a JPEG header</span>
-<a name="l00275"></a>00275 <span class="comment"> *</span>
-<a name="l00276"></a>00276 <span class="comment"> * return TRUE if successful, otherwise FALSE</span>
-<a name="l00277"></a>00277 <span class="comment"> */</span>
-<a name="l00278"></a>00278 <span class="keyword">static</span> BOOL
-<a name="l00279"></a>00279 bExamineJPEG(FILE *pFile, imagedata_type *pImg)
-<a name="l00280"></a>00280 {
-<a name="l00281"></a>00281 <span class="keywordtype">size_t</span> tLength;
-<a name="l00282"></a>00282 <span class="keywordtype">int</span> iMarker, iIndex;
-<a name="l00283"></a>00283 <span class="keywordtype">char</span> appstring[10];
-<a name="l00284"></a>00284 BOOL bSOFDone;
-<a name="l00285"></a>00285
-<a name="l00286"></a>00286 tLength = 0;
-<a name="l00287"></a>00287 bSOFDone = FALSE;
-<a name="l00288"></a>00288
-<a name="l00289"></a>00289 <span class="comment">/* process JPEG markers */</span>
-<a name="l00290"></a>00290 <span class="keywordflow">while</span> (!bSOFDone && (iMarker = iNextMarker(pFile)) != (<span class="keywordtype">int</span>)M_EOI) {
-<a name="l00291"></a>00291 <span class="keywordflow">switch</span> (iMarker) {
-<a name="l00292"></a>00292 <span class="keywordflow">case</span> EOF:
-<a name="l00293"></a>00293 DBG_MSG(<span class="stringliteral">"Error: unexpected end of JPEG file"</span>);
-<a name="l00294"></a>00294 <span class="keywordflow">return</span> FALSE;
-<a name="l00295"></a>00295 <span class="comment">/* The following are not officially supported in PostScript level 2 */</span>
-<a name="l00296"></a>00296 <span class="keywordflow">case</span> M_SOF2:
-<a name="l00297"></a>00297 <span class="keywordflow">case</span> M_SOF3:
-<a name="l00298"></a>00298 <span class="keywordflow">case</span> M_SOF5:
-<a name="l00299"></a>00299 <span class="keywordflow">case</span> M_SOF6:
-<a name="l00300"></a>00300 <span class="keywordflow">case</span> M_SOF7:
-<a name="l00301"></a>00301 <span class="keywordflow">case</span> M_SOF9:
-<a name="l00302"></a>00302 <span class="keywordflow">case</span> M_SOF10:
-<a name="l00303"></a>00303 <span class="keywordflow">case</span> M_SOF11:
-<a name="l00304"></a>00304 <span class="keywordflow">case</span> M_SOF13:
-<a name="l00305"></a>00305 <span class="keywordflow">case</span> M_SOF14:
-<a name="l00306"></a>00306 <span class="keywordflow">case</span> M_SOF15:
-<a name="l00307"></a>00307 DBG_HEX(iMarker);
-<a name="l00308"></a>00308 <span class="keywordflow">return</span> FALSE;
-<a name="l00309"></a>00309 <span class="keywordflow">case</span> M_SOF0:
-<a name="l00310"></a>00310 <span class="keywordflow">case</span> M_SOF1:
-<a name="l00311"></a>00311 tLength = (size_t)usNextWordBE(pFile);
-<a name="l00312"></a>00312 pImg->uiBitsPerComponent = (UINT)iNextByte(pFile);
-<a name="l00313"></a>00313 pImg->iHeight = (int)usNextWordBE(pFile);
-<a name="l00314"></a>00314 pImg->iWidth = (int)usNextWordBE(pFile);
-<a name="l00315"></a>00315 pImg->iComponents = iNextByte(pFile);
-<a name="l00316"></a>00316 bSOFDone = TRUE;
-<a name="l00317"></a>00317 <span class="keywordflow">break</span>;
-<a name="l00318"></a>00318 <span class="keywordflow">case</span> M_APP14:
-<a name="l00319"></a>00319 <span class="comment">/*</span>
-<a name="l00320"></a>00320 <span class="comment"> * Check for Adobe application marker. It is known (per Adobe's</span>
-<a name="l00321"></a>00321 <span class="comment"> * TN5116) to contain the string "Adobe" at the start of the</span>
-<a name="l00322"></a>00322 <span class="comment"> * APP14 marker.</span>
-<a name="l00323"></a>00323 <span class="comment"> */</span>
-<a name="l00324"></a>00324 tLength = (size_t)usNextWordBE(pFile);
-<a name="l00325"></a>00325 <span class="keywordflow">if</span> (tLength < 12) {
-<a name="l00326"></a>00326 (void)tSkipBytes(pFile, tLength - 2);
-<a name="l00327"></a>00327 } <span class="keywordflow">else</span> {
-<a name="l00328"></a>00328 <span class="keywordflow">for</span> (iIndex = 0; iIndex < 5; iIndex++) {
-<a name="l00329"></a>00329 appstring[iIndex] =
-<a name="l00330"></a>00330 (char)iNextByte(pFile);
-<a name="l00331"></a>00331 }
-<a name="l00332"></a>00332 appstring[5] = <span class="charliteral">'\0'</span>;
-<a name="l00333"></a>00333 <span class="keywordflow">if</span> (STREQ(appstring, <span class="stringliteral">"Adobe"</span>)) {
-<a name="l00334"></a>00334 pImg->bAdobe = TRUE;
-<a name="l00335"></a>00335 }
-<a name="l00336"></a>00336 (void)tSkipBytes(pFile, tLength - 7);
-<a name="l00337"></a>00337 }
-<a name="l00338"></a>00338 <span class="keywordflow">break</span>;
-<a name="l00339"></a>00339 <span class="keywordflow">case</span> M_SOI: <span class="comment">/* ignore markers without parameters */</span>
-<a name="l00340"></a>00340 <span class="keywordflow">case</span> M_EOI:
-<a name="l00341"></a>00341 <span class="keywordflow">case</span> M_TEM:
-<a name="l00342"></a>00342 <span class="keywordflow">case</span> M_RST0:
-<a name="l00343"></a>00343 <span class="keywordflow">case</span> M_RST1:
-<a name="l00344"></a>00344 <span class="keywordflow">case</span> M_RST2:
-<a name="l00345"></a>00345 <span class="keywordflow">case</span> M_RST3:
-<a name="l00346"></a>00346 <span class="keywordflow">case</span> M_RST4:
-<a name="l00347"></a>00347 <span class="keywordflow">case</span> M_RST5:
-<a name="l00348"></a>00348 <span class="keywordflow">case</span> M_RST6:
-<a name="l00349"></a>00349 <span class="keywordflow">case</span> M_RST7:
-<a name="l00350"></a>00350 <span class="keywordflow">break</span>;
-<a name="l00351"></a>00351 <span class="keywordflow">default</span>: <span class="comment">/* skip variable length markers */</span>
-<a name="l00352"></a>00352 tLength = (size_t)usNextWordBE(pFile);
-<a name="l00353"></a>00353 (void)tSkipBytes(pFile, tLength - 2);
-<a name="l00354"></a>00354 <span class="keywordflow">break</span>;
-<a name="l00355"></a>00355 }
-<a name="l00356"></a>00356 }
-<a name="l00357"></a>00357
-<a name="l00358"></a>00358 DBG_DEC(pImg->iWidth);
-<a name="l00359"></a>00359 DBG_DEC(pImg->iHeight);
-<a name="l00360"></a>00360 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00361"></a>00361 DBG_DEC(pImg->iComponents);
-<a name="l00362"></a>00362
-<a name="l00363"></a>00363 <span class="comment">/* Do some sanity checks with the parameters */</span>
-<a name="l00364"></a>00364 <span class="keywordflow">if</span> (pImg->iHeight <= 0 ||
-<a name="l00365"></a>00365 pImg->iWidth <= 0 ||
-<a name="l00366"></a>00366 pImg->iComponents <= 0) {
-<a name="l00367"></a>00367 DBG_DEC(pImg->iHeight);
-<a name="l00368"></a>00368 DBG_DEC(pImg->iWidth);
-<a name="l00369"></a>00369 DBG_DEC(pImg->iComponents);
-<a name="l00370"></a>00370 <span class="keywordflow">return</span> FALSE;
-<a name="l00371"></a>00371 }
-<a name="l00372"></a>00372
-<a name="l00373"></a>00373 <span class="comment">/* Some broken JPEG files have this but they print anyway... */</span>
-<a name="l00374"></a>00374 <span class="keywordflow">if</span> (pImg->iComponents * 3 + 8 != (<span class="keywordtype">int</span>)tLength) {
-<a name="l00375"></a>00375 DBG_MSG(<span class="stringliteral">"Warning: SOF marker has incorrect length - ignored"</span>);
-<a name="l00376"></a>00376 }
-<a name="l00377"></a>00377
-<a name="l00378"></a>00378 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent != 8) {
-<a name="l00379"></a>00379 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00380"></a>00380 DBG_MSG(<span class="stringliteral">"Not supported in PostScript level 2"</span>);
-<a name="l00381"></a>00381 <span class="keywordflow">return</span> FALSE;
-<a name="l00382"></a>00382 }
-<a name="l00383"></a>00383
-<a name="l00384"></a>00384 <span class="keywordflow">if</span> (pImg->iComponents != 1 &&
-<a name="l00385"></a>00385 pImg->iComponents != 3 &&
-<a name="l00386"></a>00386 pImg->iComponents != 4) {
-<a name="l00387"></a>00387 DBG_DEC(pImg->iComponents);
-<a name="l00388"></a>00388 <span class="keywordflow">return</span> FALSE;
-<a name="l00389"></a>00389 }
-<a name="l00390"></a>00390
-<a name="l00391"></a>00391 pImg->bColorImage = pImg->iComponents >= 3;
-<a name="l00392"></a>00392 pImg->iColorsUsed = 0;
-<a name="l00393"></a>00393 pImg->eCompression = compression_jpeg;
-<a name="l00394"></a>00394
-<a name="l00395"></a>00395 <span class="keywordflow">return</span> TRUE;
-<a name="l00396"></a>00396 } <span class="comment">/* end of bExamineJPEG */</span>
-<a name="l00397"></a>00397
-<a name="l00398"></a>00398 <span class="comment">/*</span>
-<a name="l00399"></a>00399 <span class="comment"> * bFillPalettePNG - fill the palette part of the imagesdata</span>
-<a name="l00400"></a>00400 <span class="comment"> *</span>
-<a name="l00401"></a>00401 <span class="comment"> * returns TRUE if sucessful, otherwise FALSE;</span>
-<a name="l00402"></a>00402 <span class="comment"> */</span>
-<a name="l00403"></a>00403 <span class="keyword">static</span> BOOL
-<a name="l00404"></a>00404 bFillPalettePNG(FILE *pFile, imagedata_type *pImg, <span class="keywordtype">size_t</span> tLength)
-<a name="l00405"></a>00405 {
-<a name="l00406"></a>00406 <span class="keywordtype">int</span> iIndex, iEntries;
-<a name="l00407"></a>00407
-<a name="l00408"></a>00408 fail(pFile == NULL);
-<a name="l00409"></a>00409 fail(pImg == NULL);
-<a name="l00410"></a>00410
-<a name="l00411"></a>00411 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent > 8) {
-<a name="l00412"></a>00412 <span class="comment">/* No palette, image uses more than 256 colors */</span>
-<a name="l00413"></a>00413 <span class="keywordflow">return</span> TRUE;
-<a name="l00414"></a>00414 }
-<a name="l00415"></a>00415
-<a name="l00416"></a>00416 <span class="keywordflow">if</span> (!pImg->bColorImage) {
-<a name="l00417"></a>00417 <span class="comment">/* Only color images can have a palette */</span>
-<a name="l00418"></a>00418 <span class="keywordflow">return</span> FALSE;
-<a name="l00419"></a>00419 }
-<a name="l00420"></a>00420
-<a name="l00421"></a>00421 <span class="keywordflow">if</span> (tLength % 3 != 0) {
-<a name="l00422"></a>00422 <span class="comment">/* Each palette entry takes three bytes */</span>
-<a name="l00423"></a>00423 DBG_DEC(tLength);
-<a name="l00424"></a>00424 <span class="keywordflow">return</span> FALSE;
-<a name="l00425"></a>00425 }
-<a name="l00426"></a>00426
-<a name="l00427"></a>00427 iEntries = (int)(tLength / 3);
-<a name="l00428"></a>00428 DBG_DEC(iEntries);
-<a name="l00429"></a>00429 pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
-<a name="l00430"></a>00430 DBG_DEC(pImg->iColorsUsed);
-<a name="l00431"></a>00431
-<a name="l00432"></a>00432 <span class="keywordflow">if</span> (iEntries > 256) {
-<a name="l00433"></a>00433 DBG_DEC(iEntries);
-<a name="l00434"></a>00434 <span class="keywordflow">return</span> FALSE;
-<a name="l00435"></a>00435 }
-<a name="l00436"></a>00436
-<a name="l00437"></a>00437 <span class="keywordflow">for</span> (iIndex = 0; iIndex < iEntries; iIndex++) {
-<a name="l00438"></a>00438 pImg->aucPalette[iIndex][0] = (UCHAR)iNextByte(pFile);
-<a name="l00439"></a>00439 pImg->aucPalette[iIndex][1] = (UCHAR)iNextByte(pFile);
-<a name="l00440"></a>00440 pImg->aucPalette[iIndex][2] = (UCHAR)iNextByte(pFile);
-<a name="l00441"></a>00441 NO_DBG_PRINT_BLOCK(pImg->aucPalette[iIndex], 3);
-<a name="l00442"></a>00442 }
-<a name="l00443"></a>00443 <span class="keywordflow">for</span> (;iIndex < pImg->iColorsUsed; iIndex++) {
-<a name="l00444"></a>00444 pImg->aucPalette[iIndex][0] = 0;
-<a name="l00445"></a>00445 pImg->aucPalette[iIndex][1] = 0;
-<a name="l00446"></a>00446 pImg->aucPalette[iIndex][2] = 0;
-<a name="l00447"></a>00447 }
-<a name="l00448"></a>00448
-<a name="l00449"></a>00449 <span class="keywordflow">return</span> TRUE;
-<a name="l00450"></a>00450 } <span class="comment">/* end of bFillPalettePNG */</span>
-<a name="l00451"></a>00451
-<a name="l00452"></a>00452 <span class="comment">/*</span>
-<a name="l00453"></a>00453 <span class="comment"> * bExaminePNG - Examine a PNG header</span>
-<a name="l00454"></a>00454 <span class="comment"> *</span>
-<a name="l00455"></a>00455 <span class="comment"> * return TRUE if successful, otherwise FALSE</span>
-<a name="l00456"></a>00456 <span class="comment"> */</span>
-<a name="l00457"></a>00457 <span class="keyword">static</span> BOOL
-<a name="l00458"></a>00458 bExaminePNG(FILE *pFile, imagedata_type *pImg)
-<a name="l00459"></a>00459 {
-<a name="l00460"></a>00460 <span class="keywordtype">size_t</span> tLength;
-<a name="l00461"></a>00461 ULONG ulLong1, ulLong2, ulName;
-<a name="l00462"></a>00462 <span class="keywordtype">int</span> iIndex, iTmp;
-<a name="l00463"></a>00463 <span class="keywordtype">int</span> iCompressionMethod, iFilterMethod, iInterlaceMethod;
-<a name="l00464"></a>00464 <span class="keywordtype">int</span> iColor, iIncrement;
-<a name="l00465"></a>00465 BOOL bHasPalette, bHasAlpha;
-<a name="l00466"></a>00466 UCHAR aucBuf[4];
-<a name="l00467"></a>00467
-<a name="l00468"></a>00468 <span class="comment">/* Check signature */</span>
-<a name="l00469"></a>00469 ulLong1 = ulNextLongBE(pFile);
-<a name="l00470"></a>00470 ulLong2 = ulNextLongBE(pFile);
-<a name="l00471"></a>00471 <span class="keywordflow">if</span> (ulLong1 != 0x89504e47UL || ulLong2 != 0x0d0a1a0aUL) {
-<a name="l00472"></a>00472 DBG_HEX(ulLong1);
-<a name="l00473"></a>00473 DBG_HEX(ulLong2);
-<a name="l00474"></a>00474 <span class="keywordflow">return</span> FALSE;
-<a name="l00475"></a>00475 }
-<a name="l00476"></a>00476
-<a name="l00477"></a>00477 ulName = 0x00;
-<a name="l00478"></a>00478 bHasPalette = FALSE;
-<a name="l00479"></a>00479
-<a name="l00480"></a>00480 <span class="comment">/* Examine chunks */</span>
-<a name="l00481"></a>00481 <span class="keywordflow">while</span> (ulName != PNG_CN_IEND) {
-<a name="l00482"></a>00482 tLength = (size_t)ulNextLongBE(pFile);
-<a name="l00483"></a>00483 ulName = 0x00;
-<a name="l00484"></a>00484 <span class="keywordflow">for</span> (iIndex = 0; iIndex < (int)elementsof(aucBuf); iIndex++) {
-<a name="l00485"></a>00485 aucBuf[iIndex] = (UCHAR)iNextByte(pFile);
-<a name="l00486"></a>00486 <span class="keywordflow">if</span> (!isalpha(aucBuf[iIndex])) {
-<a name="l00487"></a>00487 DBG_HEX(aucBuf[iIndex]);
-<a name="l00488"></a>00488 <span class="keywordflow">return</span> FALSE;
-<a name="l00489"></a>00489 }
-<a name="l00490"></a>00490 ulName <<= 8;
-<a name="l00491"></a>00491 ulName |= aucBuf[iIndex];
-<a name="l00492"></a>00492 }
-<a name="l00493"></a>00493
-<a name="l00494"></a>00494 <span class="keywordflow">switch</span> (ulName) {
-<a name="l00495"></a>00495 <span class="keywordflow">case</span> PNG_CN_IHDR:
-<a name="l00496"></a>00496 <span class="comment">/* Header chunck */</span>
-<a name="l00497"></a>00497 <span class="keywordflow">if</span> (tLength < 13) {
-<a name="l00498"></a>00498 DBG_DEC(tLength);
-<a name="l00499"></a>00499 <span class="keywordflow">return</span> FALSE;
-<a name="l00500"></a>00500 }
-<a name="l00501"></a>00501 pImg->iWidth = (int)ulNextLongBE(pFile);
-<a name="l00502"></a>00502 pImg->iHeight = (int)ulNextLongBE(pFile);
-<a name="l00503"></a>00503 pImg->uiBitsPerComponent = (UINT)iNextByte(pFile);
-<a name="l00504"></a>00504 iTmp = iNextByte(pFile);
-<a name="l00505"></a>00505 NO_DBG_HEX(iTmp);
-<a name="l00506"></a>00506 pImg->bColorImage = (iTmp & PNG_CB_COLOR) != 0;
-<a name="l00507"></a>00507 bHasPalette = (iTmp & PNG_CB_PALETTE) != 0;
-<a name="l00508"></a>00508 bHasAlpha = (iTmp & PNG_CB_ALPHA) != 0;
-<a name="l00509"></a>00509 <span class="keywordflow">if</span> (bHasPalette && pImg->uiBitsPerComponent > 8) {
-<a name="l00510"></a>00510 <span class="comment">/* This should not happen */</span>
-<a name="l00511"></a>00511 <span class="keywordflow">return</span> FALSE;
-<a name="l00512"></a>00512 }
-<a name="l00513"></a>00513 pImg->iComponents =
-<a name="l00514"></a>00514 (bHasPalette || !pImg->bColorImage) ? 1 : 3;
-<a name="l00515"></a>00515 <span class="keywordflow">if</span> (bHasAlpha) {
-<a name="l00516"></a>00516 pImg->iComponents++;
-<a name="l00517"></a>00517 }
-<a name="l00518"></a>00518 iCompressionMethod = iNextByte(pFile);
-<a name="l00519"></a>00519 <span class="keywordflow">if</span> (iCompressionMethod != 0) {
-<a name="l00520"></a>00520 DBG_DEC(iCompressionMethod);
-<a name="l00521"></a>00521 <span class="keywordflow">return</span> FALSE;
-<a name="l00522"></a>00522 }
-<a name="l00523"></a>00523 iFilterMethod = iNextByte(pFile);
-<a name="l00524"></a>00524 <span class="keywordflow">if</span> (iFilterMethod != 0) {
-<a name="l00525"></a>00525 DBG_DEC(iFilterMethod);
-<a name="l00526"></a>00526 <span class="keywordflow">return</span> FALSE;
-<a name="l00527"></a>00527 }
-<a name="l00528"></a>00528 iInterlaceMethod = iNextByte(pFile);
-<a name="l00529"></a>00529 <span class="keywordflow">if</span> (iInterlaceMethod != 0) {
-<a name="l00530"></a>00530 DBG_DEC(iInterlaceMethod);
-<a name="l00531"></a>00531 <span class="keywordflow">return</span> FALSE;
-<a name="l00532"></a>00532 }
-<a name="l00533"></a>00533 pImg->iColorsUsed = 0;
-<a name="l00534"></a>00534 (void)tSkipBytes(pFile, tLength - 13 + 4);
-<a name="l00535"></a>00535 <span class="keywordflow">break</span>;
-<a name="l00536"></a>00536 <span class="keywordflow">case</span> PNG_CN_PLTE:
-<a name="l00537"></a>00537 <span class="keywordflow">if</span> (!bHasPalette) {
-<a name="l00538"></a>00538 <span class="keywordflow">return</span> FALSE;
-<a name="l00539"></a>00539 }
-<a name="l00540"></a>00540 <span class="keywordflow">if</span> (!bFillPalettePNG(pFile, pImg, tLength)) {
-<a name="l00541"></a>00541 <span class="keywordflow">return</span> FALSE;
-<a name="l00542"></a>00542 }
-<a name="l00543"></a>00543 (void)tSkipBytes(pFile, 4);
-<a name="l00544"></a>00544 <span class="keywordflow">break</span>;
-<a name="l00545"></a>00545 <span class="keywordflow">default</span>:
-<a name="l00546"></a>00546 (void)tSkipBytes(pFile, tLength + 4);
-<a name="l00547"></a>00547 <span class="keywordflow">break</span>;
-<a name="l00548"></a>00548 }
-<a name="l00549"></a>00549 }
-<a name="l00550"></a>00550
-<a name="l00551"></a>00551 DBG_DEC(pImg->iWidth);
-<a name="l00552"></a>00552 DBG_DEC(pImg->iHeight);
-<a name="l00553"></a>00553 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00554"></a>00554 DBG_DEC(pImg->iColorsUsed);
-<a name="l00555"></a>00555 DBG_DEC(pImg->iComponents);
-<a name="l00556"></a>00556
-<a name="l00557"></a>00557 <span class="comment">/* Do some sanity checks with the parameters */</span>
-<a name="l00558"></a>00558 <span class="keywordflow">if</span> (pImg->iWidth <= 0 || pImg->iHeight <= 0) {
-<a name="l00559"></a>00559 <span class="keywordflow">return</span> FALSE;
-<a name="l00560"></a>00560 }
-<a name="l00561"></a>00561
-<a name="l00562"></a>00562 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent != 1 && pImg->uiBitsPerComponent != 2 &&
-<a name="l00563"></a>00563 pImg->uiBitsPerComponent != 4 && pImg->uiBitsPerComponent != 8 &&
-<a name="l00564"></a>00564 pImg->uiBitsPerComponent != 16) {
-<a name="l00565"></a>00565 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00566"></a>00566 <span class="keywordflow">return</span> FALSE;
-<a name="l00567"></a>00567 }
-<a name="l00568"></a>00568
-<a name="l00569"></a>00569 <span class="keywordflow">if</span> (pImg->iComponents != 1 && pImg->iComponents != 3) {
-<a name="l00570"></a>00570 <span class="comment">/* Not supported */</span>
-<a name="l00571"></a>00571 DBG_DEC(pImg->iComponents);
-<a name="l00572"></a>00572 <span class="keywordflow">return</span> FALSE;
-<a name="l00573"></a>00573 }
-<a name="l00574"></a>00574
-<a name="l00575"></a>00575 <span class="keywordflow">if</span> (pImg->uiBitsPerComponent > 8) {
-<a name="l00576"></a>00576 <span class="comment">/* Not supported */</span>
-<a name="l00577"></a>00577 DBG_DEC(pImg->uiBitsPerComponent);
-<a name="l00578"></a>00578 <span class="keywordflow">return</span> FALSE;
-<a name="l00579"></a>00579 }
-<a name="l00580"></a>00580
-<a name="l00581"></a>00581 <span class="keywordflow">if</span> (pImg->iColorsUsed == 0 &&
-<a name="l00582"></a>00582 pImg->iComponents == 1 &&
-<a name="l00583"></a>00583 pImg->uiBitsPerComponent <= 4) {
-<a name="l00584"></a>00584 <span class="comment">/*</span>
-<a name="l00585"></a>00585 <span class="comment"> * No palette is supplied, but PostScript needs one in these</span>
-<a name="l00586"></a>00586 <span class="comment"> * cases, so we add a default palette here</span>
-<a name="l00587"></a>00587 <span class="comment"> */</span>
-<a name="l00588"></a>00588 pImg->iColorsUsed = 1 << pImg->uiBitsPerComponent;
-<a name="l00589"></a>00589 iIncrement = 0xff / (pImg->iColorsUsed - 1);
-<a name="l00590"></a>00590 <span class="keywordflow">for</span> (iIndex = 0, iColor = 0x00;
-<a name="l00591"></a>00591 iIndex < pImg->iColorsUsed;
-<a name="l00592"></a>00592 iIndex++, iColor += iIncrement) {
-<a name="l00593"></a>00593 pImg->aucPalette[iIndex][0] = (UCHAR)iColor;
-<a name="l00594"></a>00594 pImg->aucPalette[iIndex][1] = (UCHAR)iColor;
-<a name="l00595"></a>00595 pImg->aucPalette[iIndex][2] = (UCHAR)iColor;
-<a name="l00596"></a>00596 }
-<a name="l00597"></a>00597 <span class="comment">/* Just to be sure */</span>
-<a name="l00598"></a>00598 pImg->bColorImage = FALSE;
-<a name="l00599"></a>00599 }
-<a name="l00600"></a>00600
-<a name="l00601"></a>00601 pImg->eCompression = compression_zlib;
-<a name="l00602"></a>00602
-<a name="l00603"></a>00603 <span class="keywordflow">return</span> TRUE;
-<a name="l00604"></a>00604 } <span class="comment">/* end of bExaminePNG */</span>
-<a name="l00605"></a>00605
-<a name="l00606"></a>00606 <span class="comment">/*</span>
-<a name="l00607"></a>00607 <span class="comment"> * bExamineWMF - Examine a WMF header</span>
-<a name="l00608"></a>00608 <span class="comment"> *</span>
-<a name="l00609"></a>00609 <span class="comment"> * return TRUE if successful, otherwise FALSE</span>
-<a name="l00610"></a>00610 <span class="comment"> */</span>
-<a name="l00611"></a>00611 <span class="keyword">static</span> BOOL
-<a name="l00612"></a>00612 bExamineWMF(FILE *pFile, imagedata_type *pImg)
-<a name="l00613"></a>00613 {
-<a name="l00614"></a>00614 ULONG ulFileSize, ulMaxRecord, ulMagic;
-<a name="l00615"></a>00615 USHORT usType, usHeaderSize, usVersion, usNoObjects;
-<a name="l00616"></a>00616
-<a name="l00617"></a>00617 usType = usNextWord(pFile);
-<a name="l00618"></a>00618 usHeaderSize = usNextWord(pFile);
-<a name="l00619"></a>00619 ulMagic = ((ULONG)usHeaderSize << 16) | (ULONG)usType;
-<a name="l00620"></a>00620 usVersion = usNextWord(pFile);
-<a name="l00621"></a>00621 ulFileSize = ulNextLong(pFile);
-<a name="l00622"></a>00622 usNoObjects = usNextWord(pFile);
-<a name="l00623"></a>00623 ulMaxRecord = ulNextLong(pFile);
-<a name="l00624"></a>00624
-<a name="l00625"></a>00625 DBG_HEX(ulMagic);
-<a name="l00626"></a>00626 DBG_DEC(usType);
-<a name="l00627"></a>00627 DBG_DEC(usHeaderSize);
-<a name="l00628"></a>00628 DBG_HEX(usVersion);
-<a name="l00629"></a>00629 DBG_DEC(ulFileSize);
-<a name="l00630"></a>00630 DBG_DEC(usNoObjects);
-<a name="l00631"></a>00631 DBG_DEC(ulMaxRecord);
-<a name="l00632"></a>00632
-<a name="l00633"></a>00633 <span class="keywordflow">return</span> FALSE;
-<a name="l00634"></a>00634 } <span class="comment">/* end of bExamineWMF */</span>
-<a name="l00635"></a>00635
-<a name="l00636"></a>00636 <span class="preprocessor">#if !defined(__riscos)</span>
-<a name="l00637"></a>00637 <span class="preprocessor"></span><span class="comment">/*</span>
-<a name="l00638"></a>00638 <span class="comment"> * vImage2Papersize - make sure the image fits on the paper</span>
-<a name="l00639"></a>00639 <span class="comment"> *</span>
-<a name="l00640"></a>00640 <span class="comment"> * This function should not be needed if Word would do a proper job</span>
-<a name="l00641"></a>00641 <span class="comment"> */</span>
-<a name="l00642"></a>00642 <span class="keyword">static</span> <span class="keywordtype">void</span>
-<a name="l00643"></a>00643 vImage2Papersize(imagedata_type *pImg)
-<a name="l00644"></a>00644 {
-<a name="l00645"></a>00645 <span class="keyword">static</span> <span class="keywordtype">int</span> iNetPageHeight = -1;
-<a name="l00646"></a>00646 <span class="keyword">static</span> <span class="keywordtype">int</span> iNetPageWidth = -1;
-<a name="l00647"></a>00647 options_type tOptions;
-<a name="l00648"></a>00648 <span class="keywordtype">double</span> dVerFactor, dHorFactor, dFactor;
-<a name="l00649"></a>00649
-<a name="l00650"></a>00650 DBG_MSG(<span class="stringliteral">"vImage2Papersize"</span>);
-<a name="l00651"></a>00651
-<a name="l00652"></a>00652 fail(pImg == NULL);
-<a name="l00653"></a>00653
-<a name="l00654"></a>00654 <span class="keywordflow">if</span> (iNetPageHeight < 0 || iNetPageWidth < 0) {
-<a name="l00655"></a>00655 <span class="comment">/* Get the page dimensions from the options */</span>
-<a name="l00656"></a>00656 vGetOptions(&tOptions);
-<a name="l00657"></a>00657 <span class="comment">/* Add 999 to err on the save side */</span>
-<a name="l00658"></a>00658 iNetPageHeight = tOptions.iPageHeight -
-<a name="l00659"></a>00659 (lDrawUnits2MilliPoints(
-<a name="l00660"></a>00660 PS_TOP_MARGIN + PS_BOTTOM_MARGIN) +
-<a name="l00661"></a>00661 999) / 1000;
-<a name="l00662"></a>00662 iNetPageWidth = tOptions.iPageWidth -
-<a name="l00663"></a>00663 (lDrawUnits2MilliPoints(
-<a name="l00664"></a>00664 PS_LEFT_MARGIN + PS_RIGHT_MARGIN) +
-<a name="l00665"></a>00665 999) / 1000;
-<a name="l00666"></a>00666 DBG_DEC(iNetPageHeight);
-<a name="l00667"></a>00667 DBG_DEC(iNetPageWidth);
-<a name="l00668"></a>00668 }
-<a name="l00669"></a>00669
-<a name="l00670"></a>00670 <span class="keywordflow">if</span> (pImg->iVerSizeScaled < iNetPageHeight &&
-<a name="l00671"></a>00671 pImg->iHorSizeScaled < iNetPageWidth) {
-<a name="l00672"></a>00672 <span class="comment">/* The image fits on the paper */</span>
-<a name="l00673"></a>00673 <span class="keywordflow">return</span>;
-<a name="l00674"></a>00674 }
-<a name="l00675"></a>00675
-<a name="l00676"></a>00676 dVerFactor = (double)iNetPageHeight / (<span class="keywordtype">double</span>)pImg->iVerSizeScaled;
-<a name="l00677"></a>00677 dHorFactor = (double)iNetPageWidth / (<span class="keywordtype">double</span>)pImg->iHorSizeScaled;
-<a name="l00678"></a>00678 dFactor = min(dVerFactor, dHorFactor);
-<a name="l00679"></a>00679 DBG_FLT(dFactor);
-<a name="l00680"></a>00680 <span class="comment">/* Round down, just to be on the save side */</span>
-<a name="l00681"></a>00681 pImg->iVerSizeScaled = (int)(pImg->iVerSizeScaled * dFactor);
-<a name="l00682"></a>00682 pImg->iHorSizeScaled = (int)(pImg->iHorSizeScaled * dFactor);
-<a name="l00683"></a>00683 } <span class="comment">/* end of vImage2Papersize */</span>
-<a name="l00684"></a>00684 <span class="preprocessor">#endif </span><span class="comment">/* !__riscos */</span>
-<a name="l00685"></a>00685
-<a name="l00686"></a>00686 <span class="comment">/*</span>
-<a name="l00687"></a>00687 <span class="comment"> * tFind6Image - skip until the image is found</span>
-<a name="l00688"></a>00688 <span class="comment"> *</span>
-<a name="l00689"></a>00689 <span class="comment"> * Find the image in Word 6/7 files</span>
-<a name="l00690"></a>00690 <span class="comment"> *</span>
-<a name="l00691"></a>00691 <span class="comment"> * returns the new position when a image is found, otherwise -1</span>
-<a name="l00692"></a>00692 <span class="comment"> */</span>
-<a name="l00693"></a>00693 <span class="keyword">static</span> <span class="keywordtype">size_t</span>
-<a name="l00694"></a>00694 tFind6Image(FILE *pFile, <span class="keywordtype">size_t</span> tPosition, <span class="keywordtype">size_t</span> tLength,
-<a name="l00695"></a>00695 imagetype_enum *peImageType)
-<a name="l00696"></a>00696 {
-<a name="l00697"></a>00697 ULONG ulMarker;
-<a name="l00698"></a>00698 <span class="keywordtype">size_t</span> tRecordLength, tToSkip;
-<a name="l00699"></a>00699 USHORT usMarker;
-<a name="l00700"></a>00700
-<a name="l00701"></a>00701 fail(pFile == NULL);
-<a name="l00702"></a>00702 fail(peImageType == NULL);
-<a name="l00703"></a>00703
-<a name="l00704"></a>00704 *peImageType = imagetype_is_unknown;
-<a name="l00705"></a>00705 <span class="keywordflow">if</span> (tPosition + 18 >= tLength) {
-<a name="l00706"></a>00706 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00707"></a>00707 }
-<a name="l00708"></a>00708
-<a name="l00709"></a>00709 ulMarker = ulNextLong(pFile);
-<a name="l00710"></a>00710 <span class="keywordflow">if</span> (ulMarker != 0x00090001) {
-<a name="l00711"></a>00711 DBG_HEX(ulMarker);
-<a name="l00712"></a>00712 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00713"></a>00713 }
-<a name="l00714"></a>00714 usMarker = usNextWord(pFile);
-<a name="l00715"></a>00715 <span class="keywordflow">if</span> (usMarker != 0x0300) {
-<a name="l00716"></a>00716 DBG_HEX(usMarker);
-<a name="l00717"></a>00717 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00718"></a>00718 }
-<a name="l00719"></a>00719 (void)tSkipBytes(pFile, 10);
-<a name="l00720"></a>00720 usMarker = usNextWord(pFile);
-<a name="l00721"></a>00721 <span class="keywordflow">if</span> (usMarker != 0x0000) {
-<a name="l00722"></a>00722 DBG_HEX(usMarker);
-<a name="l00723"></a>00723 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00724"></a>00724 }
-<a name="l00725"></a>00725 tPosition += 18;
-<a name="l00726"></a>00726
-<a name="l00727"></a>00727 <span class="keywordflow">while</span> (tPosition + 6 <= tLength) {
-<a name="l00728"></a>00728 tRecordLength = (size_t)ulNextLong(pFile);
-<a name="l00729"></a>00729 usMarker = usNextWord(pFile);
-<a name="l00730"></a>00730 tPosition += 6;
-<a name="l00731"></a>00731 NO_DBG_DEC(tRecordLength);
-<a name="l00732"></a>00732 NO_DBG_HEX(usMarker);
-<a name="l00733"></a>00733 <span class="keywordflow">switch</span> (usMarker) {
-<a name="l00734"></a>00734 <span class="keywordflow">case</span> 0x0000:
-<a name="l00735"></a>00735 DBG_HEX(ulGetDataOffset(pFile));
-<a name="l00736"></a>00736 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00737"></a>00737 <span class="keywordflow">case</span> 0x0b41:
-<a name="l00738"></a>00738 DBG_MSG(<span class="stringliteral">"DIB"</span>);
-<a name="l00739"></a>00739 *peImageType = imagetype_is_dib;
-<a name="l00740"></a>00740 tPosition += tSkipBytes(pFile, 20);
-<a name="l00741"></a>00741 <span class="keywordflow">return</span> tPosition;
-<a name="l00742"></a>00742 <span class="keywordflow">case</span> 0x0f43:
-<a name="l00743"></a>00743 DBG_MSG(<span class="stringliteral">"DIB"</span>);
-<a name="l00744"></a>00744 *peImageType = imagetype_is_dib;
-<a name="l00745"></a>00745 tPosition += tSkipBytes(pFile, 22);
-<a name="l00746"></a>00746 <span class="keywordflow">return</span> tPosition;
-<a name="l00747"></a>00747 <span class="keywordflow">default</span>:
-<a name="l00748"></a>00748 <span class="keywordflow">if</span> (tRecordLength < 3) {
-<a name="l00749"></a>00749 <span class="keywordflow">break</span>;
-<a name="l00750"></a>00750 }
-<a name="l00751"></a>00751 <span class="keywordflow">if</span> (tRecordLength > SIZE_T_MAX / 2) {
-<a name="l00752"></a>00752 <span class="comment">/*</span>
-<a name="l00753"></a>00753 <span class="comment"> * No need to compute the number of bytes</span>
-<a name="l00754"></a>00754 <span class="comment"> * to skip</span>
-<a name="l00755"></a>00755 <span class="comment"> */</span>
-<a name="l00756"></a>00756 DBG_DEC(tRecordLength);
-<a name="l00757"></a>00757 DBG_HEX(tRecordLength);
-<a name="l00758"></a>00758 DBG_FIXME();
-<a name="l00759"></a>00759 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00760"></a>00760 }
-<a name="l00761"></a>00761 tToSkip = tRecordLength * 2 - 6;
-<a name="l00762"></a>00762 <span class="keywordflow">if</span> (tToSkip > tLength - tPosition) {
-<a name="l00763"></a>00763 <span class="comment">/* You can't skip this number of bytes */</span>
-<a name="l00764"></a>00764 DBG_DEC(tToSkip);
-<a name="l00765"></a>00765 DBG_DEC(tLength - tPosition);
-<a name="l00766"></a>00766 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00767"></a>00767 }
-<a name="l00768"></a>00768 tPosition += tSkipBytes(pFile, tToSkip);
-<a name="l00769"></a>00769 <span class="keywordflow">break</span>;
-<a name="l00770"></a>00770 }
-<a name="l00771"></a>00771 }
-<a name="l00772"></a>00772
-<a name="l00773"></a>00773 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00774"></a>00774 } <span class="comment">/* end of tFind6Image */</span>
-<a name="l00775"></a>00775
-<a name="l00776"></a>00776 <span class="comment">/*</span>
-<a name="l00777"></a>00777 <span class="comment"> * tFind8Image - skip until the image is found</span>
-<a name="l00778"></a>00778 <span class="comment"> *</span>
-<a name="l00779"></a>00779 <span class="comment"> * Find the image in Word 8/9/10 files</span>
-<a name="l00780"></a>00780 <span class="comment"> *</span>
-<a name="l00781"></a>00781 <span class="comment"> * returns the new position when a image is found, otherwise -1</span>
-<a name="l00782"></a>00782 <span class="comment"> */</span>
-<a name="l00783"></a>00783 <span class="keyword">static</span> <span class="keywordtype">size_t</span>
-<a name="l00784"></a>00784 tFind8Image(FILE *pFile, <span class="keywordtype">size_t</span> tPosition, <span class="keywordtype">size_t</span> tLength,
-<a name="l00785"></a>00785 imagetype_enum *peImageType)
-<a name="l00786"></a>00786 {
-<a name="l00787"></a>00787 <span class="keywordtype">size_t</span> tRecordLength, tNameLen;
-<a name="l00788"></a>00788 USHORT usRecordVersion, usRecordType, usRecordInstance;
-<a name="l00789"></a>00789 USHORT usTmp;
-<a name="l00790"></a>00790
-<a name="l00791"></a>00791 fail(pFile == NULL);
-<a name="l00792"></a>00792 fail(peImageType == NULL);
-<a name="l00793"></a>00793
-<a name="l00794"></a>00794 *peImageType = imagetype_is_unknown;
-<a name="l00795"></a>00795 <span class="keywordflow">while</span> (tPosition + 8 <= tLength) {
-<a name="l00796"></a>00796 usTmp = usNextWord(pFile);
-<a name="l00797"></a>00797 usRecordVersion = usTmp & 0x000f;
-<a name="l00798"></a>00798 usRecordInstance = usTmp >> 4;
-<a name="l00799"></a>00799 usRecordType = usNextWord(pFile);
-<a name="l00800"></a>00800 tRecordLength = (size_t)ulNextLong(pFile);
-<a name="l00801"></a>00801 tPosition += 8;
-<a name="l00802"></a>00802 NO_DBG_HEX(usRecordVersion);
-<a name="l00803"></a>00803 NO_DBG_HEX(usRecordInstance);
-<a name="l00804"></a>00804 NO_DBG_HEX(usRecordType);
-<a name="l00805"></a>00805 NO_DBG_DEC(tRecordLength);
-<a name="l00806"></a>00806 <span class="keywordflow">switch</span> (usRecordType) {
-<a name="l00807"></a>00807 <span class="keywordflow">case</span> 0xf000: <span class="keywordflow">case</span> 0xf001: <span class="keywordflow">case</span> 0xf002: <span class="keywordflow">case</span> 0xf003:
-<a name="l00808"></a>00808 <span class="keywordflow">case</span> 0xf004: <span class="keywordflow">case</span> 0xf005:
-<a name="l00809"></a>00809 <span class="keywordflow">break</span>;
-<a name="l00810"></a>00810 <span class="keywordflow">case</span> 0xf007:
-<a name="l00811"></a>00811 tPosition += tSkipBytes(pFile, 33);
-<a name="l00812"></a>00812 tNameLen = (size_t)iNextByte(pFile);
-<a name="l00813"></a>00813 tPosition++;
-<a name="l00814"></a>00814 DBG_DEC_C(tNameLen != 0, tNameLen);
-<a name="l00815"></a>00815 tPosition += tSkipBytes(pFile, 2 + tNameLen * 2);
-<a name="l00816"></a>00816 <span class="keywordflow">break</span>;
-<a name="l00817"></a>00817 <span class="keywordflow">case</span> 0xf008:
-<a name="l00818"></a>00818 tPosition += tSkipBytes(pFile, 8);
-<a name="l00819"></a>00819 <span class="keywordflow">break</span>;
-<a name="l00820"></a>00820 <span class="keywordflow">case</span> 0xf009:
-<a name="l00821"></a>00821 tPosition += tSkipBytes(pFile, 16);
-<a name="l00822"></a>00822 <span class="keywordflow">break</span>;
-<a name="l00823"></a>00823 <span class="keywordflow">case</span> 0xf006: <span class="keywordflow">case</span> 0xf00a: <span class="keywordflow">case</span> 0xf00b: <span class="keywordflow">case</span> 0xf00d:
-<a name="l00824"></a>00824 <span class="keywordflow">case</span> 0xf00e: <span class="keywordflow">case</span> 0xf00f: <span class="keywordflow">case</span> 0xf010: <span class="keywordflow">case</span> 0xf011:
-<a name="l00825"></a>00825 <span class="keywordflow">case</span> 0xf122:
-<a name="l00826"></a>00826 tPosition += tSkipBytes(pFile, tRecordLength);
-<a name="l00827"></a>00827 <span class="keywordflow">break</span>;
-<a name="l00828"></a>00828 <span class="keywordflow">case</span> 0xf01a:
-<a name="l00829"></a>00829 DBG_MSG(<span class="stringliteral">"EMF"</span>);
-<a name="l00830"></a>00830 *peImageType = imagetype_is_emf;
-<a name="l00831"></a>00831 tPosition += tSkipBytes(pFile, 50);
-<a name="l00832"></a>00832 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_EMF) == 1) {
-<a name="l00833"></a>00833 tPosition += tSkipBytes(pFile, 16);
-<a name="l00834"></a>00834 }
-<a name="l00835"></a>00835 <span class="keywordflow">return</span> tPosition;
-<a name="l00836"></a>00836 <span class="keywordflow">case</span> 0xf01b:
-<a name="l00837"></a>00837 DBG_MSG(<span class="stringliteral">"WMF"</span>);
-<a name="l00838"></a>00838 *peImageType = imagetype_is_wmf;
-<a name="l00839"></a>00839 tPosition += tSkipBytes(pFile, 50);
-<a name="l00840"></a>00840 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_WMF) == 1) {
-<a name="l00841"></a>00841 tPosition += tSkipBytes(pFile, 16);
-<a name="l00842"></a>00842 }
-<a name="l00843"></a>00843 <span class="keywordflow">return</span> tPosition;
-<a name="l00844"></a>00844 <span class="keywordflow">case</span> 0xf01c:
-<a name="l00845"></a>00845 DBG_MSG(<span class="stringliteral">"PICT"</span>);
-<a name="l00846"></a>00846 *peImageType = imagetype_is_pict;
-<a name="l00847"></a>00847 tPosition += tSkipBytes(pFile, 50);
-<a name="l00848"></a>00848 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_PICT) == 1) {
-<a name="l00849"></a>00849 tPosition += tSkipBytes(pFile, 16);
-<a name="l00850"></a>00850 }
-<a name="l00851"></a>00851 <span class="keywordflow">return</span> tPosition;
-<a name="l00852"></a>00852 <span class="keywordflow">case</span> 0xf01d:
-<a name="l00853"></a>00853 DBG_MSG(<span class="stringliteral">"JPEG"</span>);
-<a name="l00854"></a>00854 *peImageType = imagetype_is_jpeg;
-<a name="l00855"></a>00855 tPosition += tSkipBytes(pFile, 17);
-<a name="l00856"></a>00856 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_JPEG) == 1) {
-<a name="l00857"></a>00857 tPosition += tSkipBytes(pFile, 16);
-<a name="l00858"></a>00858 }
-<a name="l00859"></a>00859 <span class="keywordflow">return</span> tPosition;
-<a name="l00860"></a>00860 <span class="keywordflow">case</span> 0xf01e:
-<a name="l00861"></a>00861 DBG_MSG(<span class="stringliteral">"PNG"</span>);
-<a name="l00862"></a>00862 *peImageType = imagetype_is_png;
-<a name="l00863"></a>00863 tPosition += tSkipBytes(pFile, 17);
-<a name="l00864"></a>00864 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_PNG) == 1) {
-<a name="l00865"></a>00865 tPosition += tSkipBytes(pFile, 16);
-<a name="l00866"></a>00866 }
-<a name="l00867"></a>00867 <span class="keywordflow">return</span> tPosition;
-<a name="l00868"></a>00868 <span class="keywordflow">case</span> 0xf01f:
-<a name="l00869"></a>00869 DBG_MSG(<span class="stringliteral">"DIB"</span>);
-<a name="l00870"></a>00870 <span class="comment">/* DIB is a BMP minus its 14 byte header */</span>
-<a name="l00871"></a>00871 *peImageType = imagetype_is_dib;
-<a name="l00872"></a>00872 tPosition += tSkipBytes(pFile, 17);
-<a name="l00873"></a>00873 <span class="keywordflow">if</span> ((usRecordInstance ^ MSOBI_DIB) == 1) {
-<a name="l00874"></a>00874 tPosition += tSkipBytes(pFile, 16);
-<a name="l00875"></a>00875 }
-<a name="l00876"></a>00876 <span class="keywordflow">return</span> tPosition;
-<a name="l00877"></a>00877 <span class="keywordflow">case</span> 0xf00c:
-<a name="l00878"></a>00878 <span class="keywordflow">default</span>:
-<a name="l00879"></a>00879 DBG_HEX(usRecordType);
-<a name="l00880"></a>00880 DBG_DEC_C(tRecordLength % 4 != 0, tRecordLength);
-<a name="l00881"></a>00881 DBG_FIXME();
-<a name="l00882"></a>00882 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00883"></a>00883 }
-<a name="l00884"></a>00884 }
-<a name="l00885"></a>00885
-<a name="l00886"></a>00886 <span class="keywordflow">return</span> (<span class="keywordtype">size_t</span>)-1;
-<a name="l00887"></a>00887 } <span class="comment">/* end of tFind8Image */</span>
-<a name="l00888"></a>00888
-<a name="l00889"></a>00889 <span class="comment">/*</span>
-<a name="l00890"></a>00890 <span class="comment"> * eExamineImage - Examine the image</span>
-<a name="l00891"></a>00891 <span class="comment"> *</span>
-<a name="l00892"></a>00892 <span class="comment"> * Returns an indication of the amount of information found</span>
-<a name="l00893"></a>00893 <span class="comment"> */</span>
-<a name="l00894"></a>00894 image_info_enum
-<a name="l00895"></a>00895 eExamineImage(FILE *pFile, ULONG ulFileOffsetImage, imagedata_type *pImg)
-<a name="l00896"></a>00896 {
-<a name="l00897"></a>00897 <span class="keywordtype">long</span> lTmp;
-<a name="l00898"></a>00898 <span class="keywordtype">size_t</span> tWordHeaderLen, tLength, tPos;
-<a name="l00899"></a>00899 <span class="keywordtype">int</span> iType, iHorSize, iVerSize;
-<a name="l00900"></a>00900 USHORT usHorScalingFactor, usVerScalingFactor;
-<a name="l00901"></a>00901
-<a name="l00902"></a>00902 <span class="keywordflow">if</span> (ulFileOffsetImage == FC_INVALID) {
-<a name="l00903"></a>00903 <span class="keywordflow">return</span> image_no_information;
-<a name="l00904"></a>00904 }
-<a name="l00905"></a>00905 DBG_HEX(ulFileOffsetImage);
-<a name="l00906"></a>00906
-<a name="l00907"></a>00907 <span class="keywordflow">if</span> (!bSetDataOffset(pFile, ulFileOffsetImage)) {
-<a name="l00908"></a>00908 <span class="keywordflow">return</span> image_no_information;
-<a name="l00909"></a>00909 }
-<a name="l00910"></a>00910
-<a name="l00911"></a>00911 tLength = (size_t)ulNextLong(pFile);
-<a name="l00912"></a>00912 DBG_DEC(tLength);
-<a name="l00913"></a>00913 <span class="keywordflow">if</span> (tLength < 46) {
-<a name="l00914"></a>00914 <span class="comment">/* Smaller than the smallest known header */</span>
-<a name="l00915"></a>00915 DBG_FIXME();
-<a name="l00916"></a>00916 <span class="keywordflow">return</span> image_no_information;
-<a name="l00917"></a>00917 }
-<a name="l00918"></a>00918 tWordHeaderLen = (size_t)usNextWord(pFile);
-<a name="l00919"></a>00919 DBG_DEC(tWordHeaderLen);
-<a name="l00920"></a>00920 fail(tWordHeaderLen != 46 &&
-<a name="l00921"></a>00921 tWordHeaderLen != 58 &&
-<a name="l00922"></a>00922 tWordHeaderLen != 68);
-<a name="l00923"></a>00923
-<a name="l00924"></a>00924 <span class="keywordflow">if</span> (tLength < tWordHeaderLen) {
-<a name="l00925"></a>00925 <span class="comment">/* Smaller than the current header */</span>
-<a name="l00926"></a>00926 <span class="keywordflow">return</span> image_no_information;
-<a name="l00927"></a>00927 }
-<a name="l00928"></a>00928 iType = (int)usNextWord(pFile);
-<a name="l00929"></a>00929 DBG_DEC(iType);
-<a name="l00930"></a>00930 (void)tSkipBytes(pFile, 28 - 8);
-<a name="l00931"></a>00931
-<a name="l00932"></a>00932 lTmp = lTwips2MilliPoints(usNextWord(pFile));
-<a name="l00933"></a>00933 iHorSize = (int)(lTmp / 1000);
-<a name="l00934"></a>00934 <span class="keywordflow">if</span> (lTmp % 1000 != 0) {
-<a name="l00935"></a>00935 iHorSize++;
-<a name="l00936"></a>00936 }
-<a name="l00937"></a>00937 DBG_DEC(iHorSize);
-<a name="l00938"></a>00938 lTmp = lTwips2MilliPoints(usNextWord(pFile));
-<a name="l00939"></a>00939 iVerSize = (int)(lTmp / 1000);
-<a name="l00940"></a>00940 <span class="keywordflow">if</span> (lTmp % 1000 != 0) {
-<a name="l00941"></a>00941 iVerSize++;
-<a name="l00942"></a>00942 }
-<a name="l00943"></a>00943 DBG_DEC(iVerSize);
-<a name="l00944"></a>00944
-<a name="l00945"></a>00945 usHorScalingFactor = usNextWord(pFile);
-<a name="l00946"></a>00946 DBG_DEC(usHorScalingFactor);
-<a name="l00947"></a>00947 usVerScalingFactor = usNextWord(pFile);
-<a name="l00948"></a>00948 DBG_DEC(usVerScalingFactor);
-<a name="l00949"></a>00949
-<a name="l00950"></a>00950 <span class="comment">/* Sanity checks */</span>
-<a name="l00951"></a>00951 lTmp = (long)iHorSize * (<span class="keywordtype">long</span>)usHorScalingFactor;
-<a name="l00952"></a>00952 <span class="keywordflow">if</span> (lTmp < 2835) {
-<a name="l00953"></a>00953 <span class="comment">/* This image would be less than 1 millimeter wide */</span>
-<a name="l00954"></a>00954 DBG_DEC(lTmp);
-<a name="l00955"></a>00955 <span class="keywordflow">return</span> image_no_information;
-<a name="l00956"></a>00956 }
-<a name="l00957"></a>00957 lTmp = (long)iVerSize * (<span class="keywordtype">long</span>)usVerScalingFactor;
-<a name="l00958"></a>00958 <span class="keywordflow">if</span> (lTmp < 2835) {
-<a name="l00959"></a>00959 <span class="comment">/* This image would be less than 1 millimeter high */</span>
-<a name="l00960"></a>00960 DBG_DEC(lTmp);
-<a name="l00961"></a>00961 <span class="keywordflow">return</span> image_no_information;
-<a name="l00962"></a>00962 }
-<a name="l00963"></a>00963
-<a name="l00964"></a>00964 <span class="comment">/* Skip the rest of the header */</span>
-<a name="l00965"></a>00965 (void)tSkipBytes(pFile, tWordHeaderLen - 36);
-<a name="l00966"></a>00966 tPos = tWordHeaderLen;
-<a name="l00967"></a>00967
-<a name="l00968"></a>00968 (void)memset(pImg, 0, <span class="keyword">sizeof</span>(*pImg));
-<a name="l00969"></a>00969
-<a name="l00970"></a>00970 <span class="keywordflow">switch</span> (iType) {
-<a name="l00971"></a>00971 <span class="keywordflow">case</span> 7:
-<a name="l00972"></a>00972 <span class="keywordflow">case</span> 8:
-<a name="l00973"></a>00973 tPos = tFind6Image(pFile, tPos, tLength, &pImg->eImageType);
-<a name="l00974"></a>00974 <span class="keywordflow">if</span> (tPos == (<span class="keywordtype">size_t</span>)-1) {
-<a name="l00975"></a>00975 <span class="comment">/* No image found */</span>
-<a name="l00976"></a>00976 <span class="keywordflow">return</span> image_no_information;
-<a name="l00977"></a>00977 }
-<a name="l00978"></a>00978 DBG_HEX(tPos);
-<a name="l00979"></a>00979 <span class="keywordflow">break</span>;
-<a name="l00980"></a>00980 <span class="keywordflow">case</span> 94: <span class="comment">/* Word 6/7, no image just a pathname */</span>
-<a name="l00981"></a>00981 pImg->eImageType = imagetype_is_external;
-<a name="l00982"></a>00982 DBG_HEX(ulFileOffsetImage + tPos);
-<a name="l00983"></a>00983 <span class="keywordflow">break</span>;
-<a name="l00984"></a>00984 <span class="keywordflow">case</span> 100:
-<a name="l00985"></a>00985 tPos = tFind8Image(pFile, tPos, tLength, &pImg->eImageType);
-<a name="l00986"></a>00986 <span class="keywordflow">if</span> (tPos == (<span class="keywordtype">size_t</span>)-1) {
-<a name="l00987"></a>00987 <span class="comment">/* No image found */</span>
-<a name="l00988"></a>00988 <span class="keywordflow">return</span> image_no_information;
-<a name="l00989"></a>00989 }
-<a name="l00990"></a>00990 DBG_HEX(tPos);
-<a name="l00991"></a>00991 <span class="keywordflow">break</span>;
-<a name="l00992"></a>00992 <span class="keywordflow">case</span> 102: <span class="comment">/* Word 8/9/10, no image just a pathname or URL */</span>
-<a name="l00993"></a>00993 pImg->eImageType = imagetype_is_external;
-<a name="l00994"></a>00994 DBG_HEX(ulFileOffsetImage + tPos);
-<a name="l00995"></a>00995 <span class="keywordflow">break</span>;
-<a name="l00996"></a>00996 <span class="keywordflow">default</span>:
-<a name="l00997"></a>00997 DBG_DEC(iType);
-<a name="l00998"></a>00998 DBG_HEX(ulFileOffsetImage + tPos);
-<a name="l00999"></a>00999 DBG_FIXME();
-<a name="l01000"></a>01000 <span class="keywordflow">return</span> image_no_information;
-<a name="l01001"></a>01001 }
-<a name="l01002"></a>01002
-<a name="l01003"></a>01003 <span class="comment">/* Minimal information is now available */</span>
-<a name="l01004"></a>01004 pImg->tLength = tLength;
-<a name="l01005"></a>01005 pImg->tPosition = tPos;
-<a name="l01006"></a>01006 pImg->iHorSizeScaled =
-<a name="l01007"></a>01007 (int)(((<span class="keywordtype">long</span>)iHorSize * (<span class="keywordtype">long</span>)usHorScalingFactor + 500) / 1000);
-<a name="l01008"></a>01008 pImg->iVerSizeScaled =
-<a name="l01009"></a>01009 (int)(((<span class="keywordtype">long</span>)iVerSize * (long)usVerScalingFactor + 500) / 1000);
-<a name="l01010"></a>01010 <span class="preprocessor">#if !defined(__riscos)</span>
-<a name="l01011"></a>01011 <span class="preprocessor"></span> vImage2Papersize(pImg);
-<a name="l01012"></a>01012 <span class="preprocessor">#endif </span><span class="comment">/* !__riscos */</span>
-<a name="l01013"></a>01013
-<a name="l01014"></a>01014 <span class="comment">/* Image type specific examinations */</span>
-<a name="l01015"></a>01015 <span class="keywordflow">switch</span> (pImg->eImageType) {
-<a name="l01016"></a>01016 <span class="keywordflow">case</span> imagetype_is_dib:
-<a name="l01017"></a>01017 <span class="keywordflow">if</span> (bExamineDIB(pFile, pImg)) {
-<a name="l01018"></a>01018 <span class="keywordflow">return</span> image_full_information;
-<a name="l01019"></a>01019 }
-<a name="l01020"></a>01020 <span class="keywordflow">return</span> image_minimal_information;
-<a name="l01021"></a>01021 <span class="keywordflow">case</span> imagetype_is_jpeg:
-<a name="l01022"></a>01022 <span class="keywordflow">if</span> (bExamineJPEG(pFile, pImg)) {
-<a name="l01023"></a>01023 <span class="keywordflow">return</span> image_full_information;
-<a name="l01024"></a>01024 }
-<a name="l01025"></a>01025 <span class="keywordflow">return</span> image_minimal_information;
-<a name="l01026"></a>01026 <span class="keywordflow">case</span> imagetype_is_png:
-<a name="l01027"></a>01027 <span class="keywordflow">if</span> (bExaminePNG(pFile, pImg)) {
-<a name="l01028"></a>01028 <span class="keywordflow">return</span> image_full_information;
-<a name="l01029"></a>01029 }
-<a name="l01030"></a>01030 <span class="keywordflow">return</span> image_minimal_information;
-<a name="l01031"></a>01031 <span class="keywordflow">case</span> imagetype_is_wmf:
-<a name="l01032"></a>01032 <span class="keywordflow">if</span> (bExamineWMF(pFile, pImg)) {
-<a name="l01033"></a>01033 <span class="keywordflow">return</span> image_full_information;
-<a name="l01034"></a>01034 }
-<a name="l01035"></a>01035 <span class="keywordflow">return</span> image_minimal_information;
-<a name="l01036"></a>01036 <span class="keywordflow">case</span> imagetype_is_emf:
-<a name="l01037"></a>01037 <span class="keywordflow">case</span> imagetype_is_pict:
-<a name="l01038"></a>01038 <span class="keywordflow">case</span> imagetype_is_external:
-<a name="l01039"></a>01039 <span class="keywordflow">return</span> image_minimal_information;
-<a name="l01040"></a>01040 <span class="keywordflow">case</span> imagetype_is_unknown:
-<a name="l01041"></a>01041 <span class="keywordflow">default</span>:
-<a name="l01042"></a>01042 <span class="keywordflow">return</span> image_no_information;
-<a name="l01043"></a>01043 }
-<a name="l01044"></a>01044 } <span class="comment">/* end of eExamineImage */</span>
-</pre></div></div>
-<hr size="1"/><address style="text-align: right;"><small>Generated by
-<a href="http://www.doxygen.org/index.html">
-<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.2 </small></address>
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