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<h1>mpc_reader.c</h1><a href="mpc__reader_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/*</span>
<a name="l00002"></a>00002 <span class="comment"> Copyright (c) 2005, The Musepack Development Team</span>
<a name="l00003"></a>00003 <span class="comment"> All rights reserved.</span>
<a name="l00004"></a>00004 <span class="comment"></span>
<a name="l00005"></a>00005 <span class="comment"> Redistribution and use in source and binary forms, with or without</span>
<a name="l00006"></a>00006 <span class="comment"> modification, are permitted provided that the following conditions are</span>
<a name="l00007"></a>00007 <span class="comment"> met:</span>
<a name="l00008"></a>00008 <span class="comment"></span>
<a name="l00009"></a>00009 <span class="comment"> * Redistributions of source code must retain the above copyright</span>
<a name="l00010"></a>00010 <span class="comment"> notice, this list of conditions and the following disclaimer.</span>
<a name="l00011"></a>00011 <span class="comment"></span>
<a name="l00012"></a>00012 <span class="comment"> * Redistributions in binary form must reproduce the above</span>
<a name="l00013"></a>00013 <span class="comment"> copyright notice, this list of conditions and the following</span>
<a name="l00014"></a>00014 <span class="comment"> disclaimer in the documentation and/or other materials provided</span>
<a name="l00015"></a>00015 <span class="comment"> with the distribution.</span>
<a name="l00016"></a>00016 <span class="comment"></span>
<a name="l00017"></a>00017 <span class="comment"> * Neither the name of the The Musepack Development Team nor the</span>
<a name="l00018"></a>00018 <span class="comment"> names of its contributors may be used to endorse or promote</span>
<a name="l00019"></a>00019 <span class="comment"> products derived from this software without specific prior</span>
<a name="l00020"></a>00020 <span class="comment"> written permission.</span>
<a name="l00021"></a>00021 <span class="comment"></span>
<a name="l00022"></a>00022 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
<a name="l00023"></a>00023 <span class="comment"> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
<a name="l00024"></a>00024 <span class="comment"> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
<a name="l00025"></a>00025 <span class="comment"> A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
<a name="l00026"></a>00026 <span class="comment"> OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
<a name="l00027"></a>00027 <span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
<a name="l00028"></a>00028 <span class="comment"> LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
<a name="l00029"></a>00029 <span class="comment"> DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
<a name="l00030"></a>00030 <span class="comment"> THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
<a name="l00031"></a>00031 <span class="comment"> (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
<a name="l00032"></a>00032 <span class="comment"> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
<a name="l00033"></a>00033 <span class="comment">*/</span>
<a name="l00034"></a>00034
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="preprocessor">#include <<a class="code" href="mpcdec_8h.html">mpcdec/mpcdec.h</a>></span>
<a name="l00039"></a>00039
<a name="l00041"></a>00041 <span class="keyword">static</span> mpc_int32_t
<a name="l00042"></a>00042 read_impl(<span class="keywordtype">void</span> *data, <span class="keywordtype">void</span> *ptr, mpc_int32_t size)
<a name="l00043"></a>00043 {
<a name="l00044"></a>00044 <a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *d = (<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *) data;
<a name="l00045"></a>00045
<a name="l00046"></a>00046 <span class="keywordflow">return</span> fread(ptr, 1, size, d-><a class="code" href="structmpc__reader__file__t.html#o1">file</a>);
<a name="l00047"></a>00047 }
<a name="l00048"></a>00048
<a name="l00049"></a>00049 <span class="keyword">static</span> mpc_bool_t
<a name="l00050"></a>00050 seek_impl(<span class="keywordtype">void</span> *data, mpc_int32_t offset)
<a name="l00051"></a>00051 {
<a name="l00052"></a>00052 <a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *d = (<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *) data;
<a name="l00053"></a>00053
<a name="l00054"></a>00054 <span class="keywordflow">return</span> d-><a class="code" href="structmpc__reader__file__t.html#o3">is_seekable</a> ? !fseek(d-><a class="code" href="structmpc__reader__file__t.html#o1">file</a>, offset, SEEK_SET) : FALSE;
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keyword">static</span> mpc_int32_t
<a name="l00058"></a>00058 tell_impl(<span class="keywordtype">void</span> *data)
<a name="l00059"></a>00059 {
<a name="l00060"></a>00060 <a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *d = (<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *) data;
<a name="l00061"></a>00061
<a name="l00062"></a>00062 <span class="keywordflow">return</span> ftell(d-><a class="code" href="structmpc__reader__file__t.html#o1">file</a>);
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064
<a name="l00065"></a>00065 <span class="keyword">static</span> mpc_int32_t
<a name="l00066"></a>00066 get_size_impl(<span class="keywordtype">void</span> *data)
<a name="l00067"></a>00067 {
<a name="l00068"></a>00068 <a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *d = (<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *) data;
<a name="l00069"></a>00069
<a name="l00070"></a>00070 <span class="keywordflow">return</span> d-><a class="code" href="structmpc__reader__file__t.html#o2">file_size</a>;
<a name="l00071"></a>00071 }
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keyword">static</span> mpc_bool_t
<a name="l00074"></a>00074 canseek_impl(<span class="keywordtype">void</span> *data)
<a name="l00075"></a>00075 {
<a name="l00076"></a>00076 <a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *d = (<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *) data;
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">return</span> d-><a class="code" href="structmpc__reader__file__t.html#o3">is_seekable</a>;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordtype">void</span>
<a name="l00082"></a><a class="code" href="mpc__reader_8c.html#a5">00082</a> <a class="code" href="reader_8h.html#a2">mpc_reader_setup_file_reader</a>(<a class="code" href="structmpc__reader__file__t.html">mpc_reader_file</a> *p_reader, FILE *input)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o1">seek</a> = seek_impl;
<a name="l00085"></a>00085 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o0">read</a> = read_impl;
<a name="l00086"></a>00086 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o2">tell</a> = tell_impl;
<a name="l00087"></a>00087 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o3">get_size</a> = get_size_impl;
<a name="l00088"></a>00088 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o4">canseek</a> = canseek_impl;
<a name="l00089"></a>00089 p_reader-><a class="code" href="structmpc__reader__file__t.html#o0">reader</a>.<a class="code" href="structmpc__reader__t.html#o5">data</a> = p_reader; <span class="comment">// point back to ourselves</span>
<a name="l00090"></a>00090
<a name="l00091"></a>00091 p_reader-><a class="code" href="structmpc__reader__file__t.html#o1">file</a> = input;
<a name="l00092"></a>00092 p_reader-><a class="code" href="structmpc__reader__file__t.html#o3">is_seekable</a> = TRUE;
<a name="l00093"></a>00093 fseek(input, 0, SEEK_END);
<a name="l00094"></a>00094 p_reader-><a class="code" href="structmpc__reader__file__t.html#o2">file_size</a> = ftell(input);
<a name="l00095"></a>00095 fseek(input, 0, SEEK_SET);
<a name="l00096"></a>00096 }
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sun Oct 23 16:35:24 2005 for libmpcdec by
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