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<p>A compressor for the KWAJ file format.
<a href="structmskwaj__compressor.html#details">More...</a></p>
<p><code>#include <<a class="el" href="mspack_8h_source.html">mspack.h</a>></code></p>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-attribs"></a>
Data Fields</h2></td></tr>
<tr class="memitem:a6ca91769afc7b31e01613eb3a2acf437"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structmskwaj__compressor.html#a6ca91769afc7b31e01613eb3a2acf437">compress</a> )(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, const char *input, const char *output, off_t length)</td></tr>
<tr class="memdesc:a6ca91769afc7b31e01613eb3a2acf437"><td class="mdescLeft"> </td><td class="mdescRight">Reads an input file and creates a compressed output file in the KWAJ compressed file format. <a href="#a6ca91769afc7b31e01613eb3a2acf437">More...</a><br/></td></tr>
<tr class="separator:a6ca91769afc7b31e01613eb3a2acf437"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a12c3d6e1e18d14cd880f336e5897d5a8"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structmskwaj__compressor.html#a12c3d6e1e18d14cd880f336e5897d5a8">set_param</a> )(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, int param, unsigned int value)</td></tr>
<tr class="memdesc:a12c3d6e1e18d14cd880f336e5897d5a8"><td class="mdescLeft"> </td><td class="mdescRight">Sets an KWAJ compression engine parameter. <a href="#a12c3d6e1e18d14cd880f336e5897d5a8">More...</a><br/></td></tr>
<tr class="separator:a12c3d6e1e18d14cd880f336e5897d5a8"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a48afe3babb35fb8c1a0a32c309be6dc7"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structmskwaj__compressor.html#a48afe3babb35fb8c1a0a32c309be6dc7">set_filename</a> )(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, const char *filename)</td></tr>
<tr class="memdesc:a48afe3babb35fb8c1a0a32c309be6dc7"><td class="mdescLeft"> </td><td class="mdescRight">Sets the original filename of the file before compression, which will be stored in the header of the output file. <a href="#a48afe3babb35fb8c1a0a32c309be6dc7">More...</a><br/></td></tr>
<tr class="separator:a48afe3babb35fb8c1a0a32c309be6dc7"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:a955181e65ccab556da4eee4854b90867"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structmskwaj__compressor.html#a955181e65ccab556da4eee4854b90867">set_extra_data</a> )(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, void *data, size_t bytes)</td></tr>
<tr class="memdesc:a955181e65ccab556da4eee4854b90867"><td class="mdescLeft"> </td><td class="mdescRight">Sets arbitrary data that will be stored in the header of the output file, uncompressed. <a href="#a955181e65ccab556da4eee4854b90867">More...</a><br/></td></tr>
<tr class="separator:a955181e65ccab556da4eee4854b90867"><td class="memSeparator" colspan="2"> </td></tr>
<tr class="memitem:acbe5ab5920c60d8468a6de6e8efa33a5"><td class="memItemLeft" align="right" valign="top">int(* </td><td class="memItemRight" valign="bottom"><a class="el" href="structmskwaj__compressor.html#acbe5ab5920c60d8468a6de6e8efa33a5">last_error</a> )(struct <a class="el" href="structmschm__decompressor.html">mschm_decompressor</a> *self)</td></tr>
<tr class="memdesc:acbe5ab5920c60d8468a6de6e8efa33a5"><td class="mdescLeft"> </td><td class="mdescRight">Returns the error code set by the most recently called method. <a href="#acbe5ab5920c60d8468a6de6e8efa33a5">More...</a><br/></td></tr>
<tr class="separator:acbe5ab5920c60d8468a6de6e8efa33a5"><td class="memSeparator" colspan="2"> </td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>A compressor for the KWAJ file format. </p>
<p>All fields are READ ONLY.</p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="mspack_8h.html#aa214297f2f85b56b2a556bf560dba9d2" title="Creates a new KWAJ compressor. ">mspack_create_kwaj_compressor()</a>, <a class="el" href="mspack_8h.html#aca7c302fbca1abd91c6d00df191e221c" title="Destroys an existing KWAJ compressor. ">mspack_destroy_kwaj_compressor()</a> </dd></dl>
</div><h2 class="groupheader">Field Documentation</h2>
<a class="anchor" id="a6ca91769afc7b31e01613eb3a2acf437"></a>
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<td class="memname">int(* mskwaj_compressor::compress)(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, const char *input, const char *output, off_t length)</td>
</tr>
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</div><div class="memdoc">
<p>Reads an input file and creates a compressed output file in the KWAJ compressed file format. </p>
<p>The KWAJ compression format is quick but gives poor compression. It is possible for the compressed output file to be larger than the input file.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>a self-referential pointer to the <a class="el" href="structmskwaj__compressor.html" title="A compressor for the KWAJ file format. ">mskwaj_compressor</a> instance being called </td></tr>
<tr><td class="paramname">input</td><td>the name of the file to compressed. This is passed passed directly to <a class="el" href="structmspack__system.html#a1a85cac5eeb55db6a432fe3824aa04a3" title="Opens a file for reading, writing, appending or updating. ">mspack_system::open()</a> </td></tr>
<tr><td class="paramname">output</td><td>the name of the file to write compressed data to. This is passed directly to <a class="el" href="structmspack__system.html#a1a85cac5eeb55db6a432fe3824aa04a3" title="Opens a file for reading, writing, appending or updating. ">mspack_system::open()</a>. </td></tr>
<tr><td class="paramname">length</td><td>the length of the uncompressed file, or -1 to indicate that this should be determined automatically by using <a class="el" href="structmspack__system.html#a86ceffde52284d3a57d5d555d7484a03" title="Seeks to a specific file offset within an open file. ">mspack_system::seek()</a> on the input file. </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>an error code, or MSPACK_ERR_OK if successful </dd></dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="structmskwaj__compressor.html#a12c3d6e1e18d14cd880f336e5897d5a8" title="Sets an KWAJ compression engine parameter. ">set_param()</a> </dd></dl>
</div>
</div>
<a class="anchor" id="acbe5ab5920c60d8468a6de6e8efa33a5"></a>
<div class="memitem">
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<td class="memname">int(* mskwaj_compressor::last_error)(struct <a class="el" href="structmschm__decompressor.html">mschm_decompressor</a> *self)</td>
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<p>Returns the error code set by the most recently called method. </p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>a self-referential pointer to the <a class="el" href="structmskwaj__compressor.html" title="A compressor for the KWAJ file format. ">mskwaj_compressor</a> instance being called </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>the most recent error code </dd></dl>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="structmskwaj__compressor.html#a6ca91769afc7b31e01613eb3a2acf437" title="Reads an input file and creates a compressed output file in the KWAJ compressed file format...">compress()</a> </dd></dl>
</div>
</div>
<a class="anchor" id="a955181e65ccab556da4eee4854b90867"></a>
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<td class="memname">int(* mskwaj_compressor::set_extra_data)(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, void *data, size_t bytes)</td>
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</div><div class="memdoc">
<p>Sets arbitrary data that will be stored in the header of the output file, uncompressed. </p>
<p>It can be up to roughly 64 kilobytes, as the overall size of the header must not exceed 65535 bytes. The data can contain null bytes if desired.</p>
<p>If NULL is passed as the data pointer, or zero is passed as the length, no extra data is included in the header. This is the default.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>a self-referential pointer to the <a class="el" href="structmskwaj__compressor.html" title="A compressor for the KWAJ file format. ">mskwaj_compressor</a> instance being called </td></tr>
<tr><td class="paramname">data</td><td>a pointer to the data to be stored in the header </td></tr>
<tr><td class="paramname">bytes</td><td>the length of the data in bytes </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>MSPACK_ERR_OK if all is OK, or MSPACK_ERR_ARGS extra data is too long </dd></dl>
</div>
</div>
<a class="anchor" id="a48afe3babb35fb8c1a0a32c309be6dc7"></a>
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<td class="memname">int(* mskwaj_compressor::set_filename)(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, const char *filename)</td>
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</div><div class="memdoc">
<p>Sets the original filename of the file before compression, which will be stored in the header of the output file. </p>
<p>The filename should be a null-terminated string, it must be an MS-DOS "8.3" type filename (up to 8 bytes for the filename, then optionally a "." and up to 3 bytes for a filename extension).</p>
<p>If NULL is passed as the filename, no filename is included in the header. This is the default.</p>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>a self-referential pointer to the <a class="el" href="structmskwaj__compressor.html" title="A compressor for the KWAJ file format. ">mskwaj_compressor</a> instance being called </td></tr>
<tr><td class="paramname">filename</td><td>the original filename to use </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>MSPACK_ERR_OK if all is OK, or MSPACK_ERR_ARGS if the filename is too long </dd></dl>
</div>
</div>
<a class="anchor" id="a12c3d6e1e18d14cd880f336e5897d5a8"></a>
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<td class="memname">int(* mskwaj_compressor::set_param)(struct <a class="el" href="structmskwaj__compressor.html">mskwaj_compressor</a> *self, int param, unsigned int value)</td>
</tr>
</table>
</div><div class="memdoc">
<p>Sets an KWAJ compression engine parameter. </p>
<p>The following parameters are defined:</p>
<ul>
<li><a class="el" href="mspack_8h.html#a9075a9264cc87f05e1d27e39982fe722" title="mskwaj_compressor::set_param() parameter: compression type ">MSKWAJC_PARAM_COMP_TYPE</a>: the compression method to use. Must be one of #MSKWAJC_COMP_NONE, #MSKWAJC_COMP_XOR, <a class="el" href="mspack_8h.html#a10b39d2b4edb12e70d92ede3b2290cf7" title="KWAJ compression type: LZSS (same method as SZDD) ">MSKWAJ_COMP_SZDD</a> or <a class="el" href="mspack_8h.html#af61a7a99713aab5cbb64bc0d58189e02" title="KWAJ compression type: LZ+Huffman compression. ">MSKWAJ_COMP_LZH</a>. The default is <a class="el" href="mspack_8h.html#af61a7a99713aab5cbb64bc0d58189e02" title="KWAJ compression type: LZ+Huffman compression. ">MSKWAJ_COMP_LZH</a>.</li>
<li><a class="el" href="mspack_8h.html#aa5b7b5364e70f3c3c134a6a7ec5847c7" title="mskwaj_compressor::set_param() parameter: include the length of the uncompressed file in the header...">MSKWAJC_PARAM_INCLUDE_LENGTH</a>: a boolean; should the compressed output file should include the uncompressed length of the input file in the header? This adds 4 bytes to the size of the output file. A value of zero says "no", non-zero says "yes". The default is "no".</li>
</ul>
<dl class="params"><dt>Parameters</dt><dd>
<table class="params">
<tr><td class="paramname">self</td><td>a self-referential pointer to the <a class="el" href="structmskwaj__compressor.html" title="A compressor for the KWAJ file format. ">mskwaj_compressor</a> instance being called </td></tr>
<tr><td class="paramname">param</td><td>the parameter to set </td></tr>
<tr><td class="paramname">value</td><td>the value to set the parameter to </td></tr>
</table>
</dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>MSPACK_ERR_OK if all is OK, or MSPACK_ERR_ARGS if there is a problem with either parameter or value. </dd></dl>
<dl class="section see"><dt>See Also</dt><dd>generate() </dd></dl>
</div>
</div>
<hr/>The documentation for this struct was generated from the following file:<ul>
<li><a class="el" href="mspack_8h_source.html">mspack.h</a></li>
</ul>
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