108 lines
6.1 KiB
HTML
Executable File
108 lines
6.1 KiB
HTML
Executable File
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<title>libmusepack: src/mpc_reader.c Source File</title>
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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">00001 <span class="comment">/*</span>
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00002 <span class="comment"> Copyright (c) 2005, The Musepack Development Team</span>
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00003 <span class="comment"> All rights reserved.</span>
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00004 <span class="comment"></span>
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00005 <span class="comment"> Redistribution and use in source and binary forms, with or without</span>
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00006 <span class="comment"> modification, are permitted provided that the following conditions are</span>
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00007 <span class="comment"> met:</span>
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00008 <span class="comment"></span>
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00009 <span class="comment"> * Redistributions of source code must retain the above copyright</span>
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00010 <span class="comment"> notice, this list of conditions and the following disclaimer.</span>
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00011 <span class="comment"></span>
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00012 <span class="comment"> * Redistributions in binary form must reproduce the above</span>
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00013 <span class="comment"> copyright notice, this list of conditions and the following</span>
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00014 <span class="comment"> disclaimer in the documentation and/or other materials provided</span>
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00015 <span class="comment"> with the distribution.</span>
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00016 <span class="comment"></span>
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00017 <span class="comment"> * Neither the name of the The Musepack Development Team nor the</span>
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00018 <span class="comment"> names of its contributors may be used to endorse or promote</span>
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00019 <span class="comment"> products derived from this software without specific prior</span>
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00020 <span class="comment"> written permission.</span>
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00021 <span class="comment"></span>
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00022 <span class="comment"> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS</span>
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00023 <span class="comment"> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT</span>
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00024 <span class="comment"> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR</span>
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00025 <span class="comment"> A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT</span>
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00026 <span class="comment"> OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,</span>
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00027 <span class="comment"> SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT</span>
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00028 <span class="comment"> LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,</span>
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00029 <span class="comment"> DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY</span>
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00030 <span class="comment"> THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT</span>
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00031 <span class="comment"> (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE</span>
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00032 <span class="comment"> OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span>
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00033 <span class="comment">*/</span>
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00034
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00037
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00038 <span class="preprocessor">#include "<a class="code" href="musepack_8h.html">musepack/musepack.h</a>"</span>
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00039
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00041 <span class="keyword">static</span> mpc_int32_t
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00042 read_impl(<span class="keywordtype">void</span> *data, <span class="keywordtype">void</span> *ptr, mpc_int32_t size)
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00043 {
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00044 mpc_reader *d = (mpc_reader *) data;
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00045
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00046 <span class="keywordflow">return</span> fread(ptr, 1, size, d->file);
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00047 }
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00048
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00049 <span class="keyword">static</span> BOOL
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00050 seek_impl(<span class="keywordtype">void</span> *data, <span class="keywordtype">int</span> offset)
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00051 {
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00052 mpc_reader *d = (mpc_reader *) data;
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00053
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00054 <span class="keywordflow">return</span> d->is_seekable ? !fseek(d->file, offset, SEEK_SET) : FALSE;
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00055 }
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00056
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00057 <span class="keyword">static</span> mpc_int32_t
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00058 tell_impl(<span class="keywordtype">void</span> *data)
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00059 {
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00060 mpc_reader *d = (mpc_reader *) data;
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00061
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00062 <span class="keywordflow">return</span> ftell(d->file);
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00063 }
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00064
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00065 <span class="keyword">static</span> mpc_int32_t
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00066 get_size_impl(<span class="keywordtype">void</span> *data)
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00067 {
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00068 mpc_reader *d = (mpc_reader *) data;
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00069
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00070 <span class="keywordflow">return</span> d->file_size;
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00071 }
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00072
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00073 <span class="keyword">static</span> BOOL
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00074 canseek_impl(<span class="keywordtype">void</span> *data)
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00075 {
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00076 mpc_reader *d = (mpc_reader *) data;
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00077
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00078 <span class="keywordflow">return</span> d->is_seekable;
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00079 }
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00080
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00081 <span class="keywordtype">void</span>
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<a name="l00082"></a><a class="code" href="mpc__reader_8c.html#a5">00082</a> <a class="code" href="reader_8h.html#a1">mpc_reader_setup_file_reader</a>(mpc_reader *reader, FILE *input)
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00083 {
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00084 reader->seek = seek_impl;
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00085 reader->read = read_impl;
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00086 reader->tell = tell_impl;
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00087 reader->get_size = get_size_impl;
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00088 reader->canseek = canseek_impl;
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00089 reader->data = reader; <span class="comment">// point back to ourselves</span>
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00090
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00091 reader->file = input;
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00092 reader->is_seekable = TRUE;
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00093 fseek(reader->file, 0, SEEK_END);
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00094 reader->file_size = ftell(reader->file);
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00095 fseek(reader->file, 0, SEEK_SET);
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00096 }
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Sat Jan 22 09:34:07 2005 for libmusepack by
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.1 </small></address>
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