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<h1>PLPicDecoder Class Reference</h1><code>#include <<a class="el" href="plpicdec_8h-source.html">plpicdec.h</a>></code>
<p>
<p>Inheritance diagram for PLPicDecoder:
<p><center><img src="classPLPicDecoder.png" usemap="#PLPicDecoder_map" border="0" alt=""></center>
<map name="PLPicDecoder_map">
<area href="classPLBmpInfo.html" alt="PLBmpInfo" shape="rect" coords="0,56,117,80">
<area href="classPLAnyPicDecoder.html" alt="PLAnyPicDecoder" shape="rect" coords="127,168,244,192">
<area href="classPLBmpDecoder.html" alt="PLBmpDecoder" shape="rect" coords="127,224,244,248">
<area href="classPLGIFDecoder.html" alt="PLGIFDecoder" shape="rect" coords="127,280,244,304">
<area href="classPLIFF85Decoder.html" alt="PLIFF85Decoder" shape="rect" coords="127,336,244,360">
<area href="classPLJPEGDecoder.html" alt="PLJPEGDecoder" shape="rect" coords="127,392,244,416">
<area href="classPLPCXDecoder.html" alt="PLPCXDecoder" shape="rect" coords="127,448,244,472">
<area href="classPLPGMDecoder.html" alt="PLPGMDecoder" shape="rect" coords="127,504,244,528">
<area href="classPLPictDecoder.html" alt="PLPictDecoder" shape="rect" coords="127,560,244,584">
<area href="classPLPNGDecoder.html" alt="PLPNGDecoder" shape="rect" coords="127,616,244,640">
<area href="classPLPPMDecoder.html" alt="PLPPMDecoder" shape="rect" coords="127,672,244,696">
<area href="classPLPSDDecoder.html" alt="PLPSDDecoder" shape="rect" coords="127,728,244,752">
<area href="classPLSGIDecoder.html" alt="PLSGIDecoder" shape="rect" coords="127,784,244,808">
<area href="classPLTGADecoder.html" alt="PLTGADecoder" shape="rect" coords="127,840,244,864">
<area href="classPLTIFFDecoder.html" alt="PLTIFFDecoder" shape="rect" coords="127,896,244,920">
</map>
<a href="classPLPicDecoder-members.html">List of all members.</a><table border=0 cellpadding=0 cellspacing=0>
<tr><td></td></tr>
<tr><td colspan=2><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top> </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a0">PLPicDecoder</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="a1" doxytag="PLPicDecoder::~PLPicDecoder"></a>
virtual </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a1">~PLPicDecoder</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Destructor. Frees memory allocated. <br><br></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a2">MakeBmpFromFile</a> (const char *pszFName, <a class="el" href="classPLBmp.html">PLBmp</a> *pBmp, const PLPixelFormat &pfWanted=PLPixelFormat::DONTCARE, <a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> *pProgNot=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a3">MakeBmpFromURL</a> (const char *pszURL, <a class="el" href="classPLBmp.html">PLBmp</a> *pBmp, const PLPixelFormat &pf=PLPixelFormat::DONTCARE, <a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> *pProgNot=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a4">MakeBmpFromMemory</a> (unsigned char *ucMemSrc, int MemSrcSize, <a class="el" href="classPLBmp.html">PLBmp</a> *pBmp, const PLPixelFormat &pf=PLPixelFormat::DONTCARE, <a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> *pProgNot=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="a5" doxytag="PLPicDecoder::OpenFile"></a>
void </td><td class="memItemRight" valign=bottom><b>OpenFile</b> (const char *pszFName, <a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> *pProgNot=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a6">MakeBmp</a> (<a class="el" href="classPLBmp.html">PLBmp</a> *pBmp, const PLPixelFormat &pf=PLPixelFormat::DONTCARE)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="a7" doxytag="PLPicDecoder::Close"></a>
virtual void </td><td class="memItemRight" valign=bottom><b>Close</b> ()</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="a8" doxytag="PLPicDecoder::Open"></a>
virtual void </td><td class="memItemRight" valign=bottom><b>Open</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)=0</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>virtual void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#a9">GetImage</a> (<a class="el" href="classPLBmpBase.html">PLBmpBase</a> &Bmp)=0</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="a10" doxytag="PLPicDecoder::SetDataSrc"></a>
void </td><td class="memItemRight" valign=bottom><b>SetDataSrc</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td colspan=2><br><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top>void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#e0">SetTraceConfig</a> (int Level, char *pszFName)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="e1" doxytag="PLPicDecoder::raiseError"></a>
void </td><td class="memItemRight" valign=bottom><b>raiseError</b> (int Code, char *pszErr)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="e2" doxytag="PLPicDecoder::Trace"></a>
void </td><td class="memItemRight" valign=bottom><a class="el" href="classPLPicDecoder.html#e2">Trace</a> (int TraceLevel, const char *pszMessage)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Called to output status messages to the current debug console. <br><br></td></tr>
<tr><td colspan=2><br><h2>Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b0" doxytag="PLPicDecoder::unpackPictRow"></a>
PLBYTE * </td><td class="memItemRight" valign=bottom><b>unpackPictRow</b> (PLBYTE *pLineBuf, <a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc, int Width, int rowBytes, int SrcBytes)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b1" doxytag="PLPicDecoder::ReadByte"></a>
PLBYTE </td><td class="memItemRight" valign=bottom><b>ReadByte</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b2" doxytag="PLPicDecoder::ReadIWord"></a>
PLWORD </td><td class="memItemRight" valign=bottom><b>ReadIWord</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b3" doxytag="PLPicDecoder::ReadMWord"></a>
PLWORD </td><td class="memItemRight" valign=bottom><b>ReadMWord</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b4" doxytag="PLPicDecoder::ReadILong"></a>
PLLONG </td><td class="memItemRight" valign=bottom><b>ReadILong</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="b5" doxytag="PLPicDecoder::ReadMLong"></a>
PLLONG </td><td class="memItemRight" valign=bottom><b>ReadMLong</b> (<a class="el" href="classPLDataSource.html">PLDataSource</a> *pDataSrc)</td></tr>
<tr><td colspan=2><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align=right valign=top><a name="p0" doxytag="PLPicDecoder::m_pDataSrc"></a>
<a class="el" href="classPLDataSource.html">PLDataSource</a> * </td><td class="memItemRight" valign=bottom><b>m_pDataSrc</b></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
PLPicDecoder is an abstract base class. It defines common routines for all decoders. Decoders for specific file formats can be derived from this class. Objects of this class interact with a <a class="el" href="classPLDataSource.html">PLDataSource</a> to decode bitmaps.
<p>
<p>
Definition at line <a class="el" href="plpicdec_8h-source.html#l00026">26</a> of file <a class="el" href="plpicdec_8h-source.html">plpicdec.h</a>.<hr><h2>Constructor & Destructor Documentation</h2>
<a name="a0" doxytag="PLPicDecoder::PLPicDecoder"></a><p>
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<td class="md" nowrap valign="top"> PLPicDecoder::PLPicDecoder </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
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<p>
Empty constructor. The actual initialization takes place in a derived class. </td>
</tr>
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<hr><h2>Member Function Documentation</h2>
<a name="a9" doxytag="PLPicDecoder::GetImage"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> virtual void PLPicDecoder::GetImage </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classPLBmpBase.html">PLBmpBase</a> & </td>
<td class="mdname1" valign="top" nowrap> <em>Bmp</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [pure virtual]</code></td>
</tr>
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</td>
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<table cellspacing=5 cellpadding=0 border=0>
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<td>
<p>
Decodes an image. Assumes that Open() and Bmp.Create() have already been called.
<p>
Implemented in <a class="el" href="classPLAnyPicDecoder.html#a4">PLAnyPicDecoder</a>, <a class="el" href="classPLBmpDecoder.html#a3">PLBmpDecoder</a>, <a class="el" href="classPLGIFDecoder.html#a3">PLGIFDecoder</a>, <a class="el" href="classPLIFF85Decoder.html#a3">PLIFF85Decoder</a>, <a class="el" href="classPLJPEGDecoder.html#a3">PLJPEGDecoder</a>, <a class="el" href="classPLPCXDecoder.html#a3">PLPCXDecoder</a>, <a class="el" href="classPLPGMDecoder.html#a3">PLPGMDecoder</a>, <a class="el" href="classPLPictDecoder.html#a3">PLPictDecoder</a>, <a class="el" href="classPLPNGDecoder.html#a3">PLPNGDecoder</a>, <a class="el" href="classPLPPMDecoder.html#a3">PLPPMDecoder</a>, <a class="el" href="classPLPSDDecoder.html#a3">PLPSDDecoder</a>, <a class="el" href="classPLSGIDecoder.html#a3">PLSGIDecoder</a>, <a class="el" href="classPLTGADecoder.html#a3">PLTGADecoder</a>, and <a class="el" href="classPLTIFFDecoder.html#a3">PLTIFFDecoder</a>. </td>
</tr>
</table>
<a name="a6" doxytag="PLPicDecoder::MakeBmp"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> virtual void PLPicDecoder::MakeBmp </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classPLBmp.html">PLBmp</a> * </td>
<td class="mdname" nowrap> <em>pBmp</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>const PLPixelFormat & </td>
<td class="mdname" nowrap> <em>pf</em> = PLPixelFormat::DONTCARE</td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Decodes an image in an already-opened data source and stores the results in pBmp. Open should be called before, close after this routine is called. </td>
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<a name="a2" doxytag="PLPicDecoder::MakeBmpFromFile"></a><p>
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<td class="md" nowrap valign="top"> virtual void PLPicDecoder::MakeBmpFromFile </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname" nowrap> <em>pszFName</em>, </td>
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<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLBmp.html">PLBmp</a> * </td>
<td class="mdname" nowrap> <em>pBmp</em>, </td>
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<td></td>
<td></td>
<td class="md" nowrap>const PLPixelFormat & </td>
<td class="mdname" nowrap> <em>pfWanted</em> = PLPixelFormat::DONTCARE, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> * </td>
<td class="mdname" nowrap> <em>pProgNot</em> = NULL</td>
</tr>
<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Decodes a picture in a file and stores the results in pBmp. BPPWanted is the number of bits per pixel in the bitmap returned. Valid values for BPPWanted are 8, 16, 24, 32 and 0. 0 will result in either an 8 or a 32 bpp bitmap being returned, depending on the source bitmap. Of course, if BPPWanted is less than the bpp of the file, some data is lost. Note that internally, all data is decoded to 8 or 32 bpp first in all cases, so using 16 or 24 as BPPWanted will cause in a copy and format conversion operation.<p>
As an exception, BPPWanted can be 1 for b/w tiff files. </td>
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<a name="a4" doxytag="PLPicDecoder::MakeBmpFromMemory"></a><p>
<table class="mdTable" width="100%" cellpadding="2" cellspacing="0">
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<td class="md" nowrap valign="top"> virtual void PLPicDecoder::MakeBmpFromMemory </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">unsigned char * </td>
<td class="mdname" nowrap> <em>ucMemSrc</em>, </td>
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<td></td>
<td></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>MemSrcSize</em>, </td>
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<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLBmp.html">PLBmp</a> * </td>
<td class="mdname" nowrap> <em>pBmp</em>, </td>
</tr>
<tr>
<td></td>
<td></td>
<td class="md" nowrap>const PLPixelFormat & </td>
<td class="mdname" nowrap> <em>pf</em> = PLPixelFormat::DONTCARE, </td>
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<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> * </td>
<td class="mdname" nowrap> <em>pProgNot</em> = NULL</td>
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<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
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<p>
Decodes a picture from a memory location which directly resembles the image file as it would be on disc. The result is stored in pBmp. BPPWanted is the number of bits per pixel in the bitmap returned. Valid values for BPPWanted are 8, 16, 24, 32 and 0. 0 will result in either an 8 or a 32 bpp bitmap being returned, depending on the source bitmap. Of course, if BPPWanted is less than the bpp of the file, some data is lost. Note that internally, all data is decoded to 8 or 32 bpp first in all cases, so using 16 or 24 as BPPWanted will cause in a copy and format conversion operation.<p>
As an exception, BPPWanted can be 1 for b/w tiff files. </td>
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<a name="a3" doxytag="PLPicDecoder::MakeBmpFromURL"></a><p>
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<td class="md" nowrap valign="top"> virtual void PLPicDecoder::MakeBmpFromURL </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const char * </td>
<td class="mdname" nowrap> <em>pszURL</em>, </td>
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<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLBmp.html">PLBmp</a> * </td>
<td class="mdname" nowrap> <em>pBmp</em>, </td>
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<tr>
<td></td>
<td></td>
<td class="md" nowrap>const PLPixelFormat & </td>
<td class="mdname" nowrap> <em>pf</em> = PLPixelFormat::DONTCARE, </td>
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<td></td>
<td></td>
<td class="md" nowrap><a class="el" href="classPLIProgressNotification.html">PLIProgressNotification</a> * </td>
<td class="mdname" nowrap> <em>pProgNot</em> = NULL</td>
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<tr>
<td></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
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</td>
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<p>
Decodes a picture in an url (<a href="http://">http://</a>, <a href="ftp:://">ftp:://</a>, ...) and stores the results in pBmp. BPPWanted is the number of bits per pixel in the bitmap returned. Valid values for BPPWanted are 8, 16, 24, 32 and 0. 0 will result in either an 8 or a 32 bpp bitmap being returned, depending on the source bitmap. Of course, if BPPWanted is less than the bpp of the file, some data is lost. Note that internally, all data is decoded to 8 or 32 bpp first in all cases, so using 16 or 24 as BPPWanted will cause in a copy and format conversion operation.<p>
As an exception, BPPWanted can be 1 for b/w tiff files. </td>
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<a name="e0" doxytag="PLPicDecoder::SetTraceConfig"></a><p>
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<td class="md" nowrap valign="top"> void PLPicDecoder::SetTraceConfig </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">int </td>
<td class="mdname" nowrap> <em>Level</em>, </td>
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<td class="md" nowrap>char * </td>
<td class="mdname" nowrap> <em>pszFName</em></td>
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<td class="md">) </td>
<td class="md" colspan="2"><code> [static]</code></td>
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<p>
Sets the amount and destination of debug traces output by the debug version. pszFName contains either a valid file name or is NULL. If it contains a file name, this file is used to store debug information. If pszFName is NULL, the destination is either the MSVC debug console or stderr depending on the version of the library. Valid values for Level are: <br>
<br>
0: Trace only errors.<br>
1: Trace top-level calls.<br>
2: Trace picture format information<br>
3: Trace all miscellaneous info.<br>
<br>
The trace configuration is global to all decoders. </td>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="plpicdec_8h-source.html">plpicdec.h</a></ul>
<hr size="1"><address style="align: right;"><small>Generated on Mon Sep 13 16:16:42 2004 for paintlib by
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border=0 >
</a>1.3.2 </small></address>
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