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<hr><h1>Pic_BMP.c</h1><a href="Pic_BMP_c.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001 <font class="preprocessor">#include <stdio.h></font>
00002 <font class="preprocessor">#include <stdlib.h></font>
00003 <font class="preprocessor">#include <string.h></font>
00004
00005 <font class="preprocessor">#include "<a class="code" href="pic_private_h.html">pic_private.h</a>"</font>
00006 <font class="preprocessor">#include "<a class="code" href="pic_h.html">pic.h</a>"</font>
00007
00008 <font class="comment">// ----------------------------------------------------------------------------------------------------------------------------------</font>
00009
00010 <font class="preprocessor">#pragma pack(1)
</font><a name="l00011"></a><a class="code" href="class_BMP_HEADER.html">00011</a> <font class="preprocessor"></font><font class="keyword">typedef</font> <font class="keyword">struct </font><a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>
00012 {
<a name="l00013"></a><a class="code" href="class_BMP_HEADER.html#m0">00013</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font> bfType;
<a name="l00014"></a><a class="code" href="class_BMP_HEADER.html#m1">00014</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> bfSize;
<a name="l00015"></a><a class="code" href="class_BMP_HEADER.html#m2">00015</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font> Res1;
<a name="l00016"></a><a class="code" href="class_BMP_HEADER.html#m3">00016</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font> Res2;
<a name="l00017"></a><a class="code" href="class_BMP_HEADER.html#m4">00017</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> bfOffBits;
<a name="l00018"></a><a class="code" href="class_BMP_HEADER.html#m5">00018</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biSize;
<a name="l00019"></a><a class="code" href="class_BMP_HEADER.html#m6">00019</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biWidth;
<a name="l00020"></a><a class="code" href="class_BMP_HEADER.html#m7">00020</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biHeight;
<a name="l00021"></a><a class="code" href="class_BMP_HEADER.html#m8">00021</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font> biPlanes;
<a name="l00022"></a><a class="code" href="class_BMP_HEADER.html#m9">00022</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">short</font> biBitCount;
<a name="l00023"></a><a class="code" href="class_BMP_HEADER.html#m10">00023</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biCompression;
<a name="l00024"></a><a class="code" href="class_BMP_HEADER.html#m11">00024</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biSizeImage;
<a name="l00025"></a><a class="code" href="class_BMP_HEADER.html#m12">00025</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biXPelsPerMeter;
<a name="l00026"></a><a class="code" href="class_BMP_HEADER.html#m13">00026</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biYPelsPerMeter;
<a name="l00027"></a><a class="code" href="class_BMP_HEADER.html#m14">00027</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biClrUsed;
<a name="l00028"></a><a class="code" href="class_BMP_HEADER.html#m15">00028</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> biClrImportant;
00029 } <a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>;
00030 <font class="preprocessor">#pragma pack()
</font>00031 <font class="preprocessor"></font>
00032 <font class="comment">// ----------------------------------------------------------------------------------------------------------------------------------</font>
00033
<a name="l00034"></a><a class="code" href="Pic_BMP_c.html#a1">00034</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <a class="code" href="Pic_BMP_c.html#a1">Pic_BMP_Write</a>( <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *FileName,
00035 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *pPal,<font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *pDatas,
00036 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> w, <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> h, <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> d)<font class="keyword">
</font>00037 <font class="keyword">
</font>00038 <font class="keyword"></font>{
00039 FILE *file;
00040 <a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a> bmph;
00041 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> slsize;
00042 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *scanline;
00043 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> i;
00044 <font class="keywordtype">long</font> x,y,rest;
00045 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> r,g,b;
00046
00047 file=fopen(FileName,<font class="stringliteral">"wb"</font>);
00048 <font class="keywordflow">if</font> (!file)
00049 {
00050 <font class="keywordflow">return</font>(0);
00051 }
00052 memset(&bmph,0,<font class="keyword">sizeof</font>(<a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>));
00053 bmph.bfType=19778;
00054 bmph.bfSize=<font class="keyword">sizeof</font>(<a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>);
00055 bmph.bfSize+=w*h*d/8;
00056 <font class="keywordflow">if</font> (pPal)
00057 {
00058 bmph.bfSize+=(256*4);
00059 }
00060 bmph.bfOffBits=<font class="keyword">sizeof</font>(<a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>);
00061 <font class="keywordflow">if</font> (pPal)
00062 {
00063 bmph.bfOffBits+=(256*4);
00064 }
00065 bmph.biSize=40;<font class="comment">//sizeof(BMP_HEADER);</font>
00066 bmph.biWidth=w;
00067 bmph.biHeight=h;
00068 bmph.biPlanes=1;
00069 bmph.biBitCount=(<font class="keywordtype">unsigned</font> <font class="keywordtype">short</font>)d;
00070 bmph.biCompression=0;
00071 bmph.biSizeImage=w*h*d/8;
00072
00073 fwrite(&bmph,1,<font class="keyword">sizeof</font>(<a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>),file);
00074 <font class="keywordflow">if</font> (pPal)
00075 {
00076 <font class="keywordflow">for</font>(i=0 ; i<256 ; i++)
00077 {
00078 fwrite(&pPal[i*3+0],1,1,file);
00079 fwrite(&pPal[i*3+1],1,1,file);
00080 fwrite(&pPal[i*3+2],1,1,file);
00081 fwrite(&pPal[i*3+2],1,1,file);
00082 }
00083 }
00084 slsize=w*d/8;
00085 scanline=<a class="code" href="pic_private_h.html#a4">Pic_calloc</a>(1,slsize);
00086 <font class="keywordflow">if</font> (!scanline)
00087 {
00088 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Write, not enough memory for scanline"</font>);
00089 <font class="keywordflow">return</font>(0);
00090 }
00091 <font class="keywordflow">for</font>(rest=0 ; ((w*d/8)+rest)%4!=0 ; rest++);
00092 <font class="keywordflow">for</font>(y=0 ; y<(<font class="keywordtype">long</font>)h ; y++)
00093 {
00094 memcpy(scanline,&pDatas[(h-y-1)*slsize],slsize);
00095 <font class="keywordflow">if</font> (d==24)
00096 {
00097 <font class="keywordflow">for</font>(x=0 ; x<(<font class="keywordtype">long</font>)w ; x++)
00098 {
00099 b=scanline[x*3+0];
00100 g=scanline[x*3+1];
00101 r=scanline[x*3+2];
00102 scanline[x*3+0]=b;
00103 scanline[x*3+1]=g;
00104 scanline[x*3+2]=r;
00105 }
00106 }
00107 fwrite(scanline,1,slsize,file);
00108 <font class="keywordflow">if</font> (rest)
00109 {
00110 fwrite(scanline,1,rest,file);
00111 }
00112 }
00113 <a class="code" href="pic_private_h.html#a5">Pic_free</a>(scanline);
00114 fclose(file);
00115 <font class="keywordflow">return</font>(1);
00116 }
00117
00118 <font class="comment">// ----------------------------------------------------------------------------------------------------------------------------------</font>
00119
<a name="l00120"></a><a class="code" href="Pic_BMP_c.html#a2">00120</a> <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> <a class="code" href="Pic_BMP_c.html#a2">Pic_BMP_Read</a>( <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *FileName,
00121 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> **ppPal, <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> **ppDatas,
00122 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> *pWidth, <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> *pHeight,
00123 <font class="keywordtype">unsigned</font> <font class="keywordtype">long</font> *pDepth)<font class="keyword">
</font>00124 <font class="keyword"></font>{
00125 FILE *file;
00126 <a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a> bmph;
00127 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *pPal;
00128 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *pDatas;
00129 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> *scanline;
00130 <font class="keywordtype">long</font> w,h,d;
00131 <font class="keywordtype">long</font> i,x,y,rest;
00132 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> r,g,b;
00133 <font class="keywordtype">unsigned</font> <font class="keywordtype">char</font> pad[4];
00134
00135 pPal=NULL;
00136 pDatas=NULL;
00137 file=fopen(FileName,<font class="stringliteral">"rb"</font>);
00138 <font class="keywordflow">if</font> (!file)
00139 {
00140 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Read, unable to open %s"</font>,FileName);
00141 <font class="keywordflow">return</font>(0);
00142 }
00143 fread(&bmph,1,<font class="keyword">sizeof</font>(<a class="code" href="class_BMP_HEADER.html">BMP_HEADER</a>),file);
00144 *pWidth=w=bmph.biWidth;
00145 *pHeight=h=bmph.biHeight;
00146 *pDepth=d=bmph.biBitCount;
00147 <font class="keywordflow">if</font> (d!=8 && d!=24)
00148 {
00149 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Read, number of bits per pixel unsupported"</font>);
00150 <font class="keywordflow">return</font>(0);
00151 }
00152 <font class="keywordflow">if</font> (*pDepth==8)
00153 {
00154 pPal=<a class="code" href="pic_private_h.html#a4">Pic_calloc</a>(1,256*3);
00155 <font class="keywordflow">if</font> (!pPal)
00156 {
00157 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Read, not enough memory for palette"</font>);
00158 <font class="keywordflow">return</font>(0);
00159 }
00160 <font class="keywordflow">for</font>(i=0 ; i<256 ; i++)
00161 {
00162 fread(&pPal[i*3+2],1,1,file);
00163 fread(&pPal[i*3+1],1,1,file);
00164 fread(&pPal[i*3+0],1,1,file);
00165 fread(&pad[0],1,1,file);
00166 }
00167 }
00168 pDatas=<a class="code" href="pic_private_h.html#a4">Pic_calloc</a>(1,w*h*d/8);
00169 <font class="keywordflow">if</font> (!pDatas)
00170 {
00171 <font class="keywordflow">if</font> (pPal)
00172 {
00173 <a class="code" href="pic_private_h.html#a5">Pic_free</a>(pPal);
00174 }
00175 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Read, not enough memory for datas"</font>);
00176 <font class="keywordflow">return</font>(0);
00177 }
00178 scanline=<a class="code" href="pic_private_h.html#a4">Pic_calloc</a>(1,w*h*d/8);
00179 <font class="keywordflow">if</font> (!scanline)
00180 {
00181 <font class="keywordflow">if</font> (pPal)
00182 {
00183 <a class="code" href="pic_private_h.html#a5">Pic_free</a>(pPal);
00184 }
00185 <a class="code" href="pic_private_h.html#a5">Pic_free</a>(pDatas);
00186 <a class="code" href="pic_private_h.html#a7">Pic_SetError</a>(<font class="stringliteral">"BMP_Read, not enough memory for scanline"</font>);
00187 <font class="keywordflow">return</font>(0);
00188 }
00189 <font class="keywordflow">for</font>(rest=0 ; (w+rest)%4!=0 ; rest++);
00190 <font class="keywordflow">for</font>(y=0 ; y<h ; y++)
00191 {
00192 fread(scanline,w,d/8,file);
00193 <font class="keywordflow">if</font> (d==24)
00194 {
00195 <font class="keywordflow">for</font>(x=0 ; x<w ; x++)
00196 {
00197 r=scanline[x*3+0];
00198 g=scanline[x*3+1];
00199 b=scanline[x*3+2];
00200 scanline[x*3+0]=b;
00201 scanline[x*3+1]=g;
00202 scanline[x*3+2]=r;
00203 }
00204 }
00205 memcpy(&pDatas[(h-y-1)*w*d/8],scanline,w*d/8);
00206 fread(pad,rest,d/8,file);
00207 }
00208 fclose(file);
00209 <a class="code" href="pic_private_h.html#a5">Pic_free</a>(scanline);
00210 *ppPal=pPal;
00211 *ppDatas=pDatas;
00212 <font class="keywordflow">return</font>(1);
00213 }
00214
00215 <font class="comment">// ----------------------------------------------------------------------------------------------------------------------------------</font>
</div></pre>
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