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von raredesign | Dez 3, 2019 | Allgemein | 0 Kommentare
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<a href="OggVorbisCodec_8cxx.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * UNIVERSITAT POMPEU FABRA</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> </div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#if USE_OGGVORBIS != 1</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor"></span><span class="preprocessor">#error USE_OGGVORBIS was not set to 1 in your settings.cfg file, but you are including files that require this. Please fix your settings.cfg</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor"></span><span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <cstdio></span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <cstring></span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <string></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <vorbis/vorbisfile.h></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="AudioFileFormats_8hxx.html">AudioFileFormats.hxx</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="AudioFile_8hxx.html">AudioFile.hxx</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="OggVorbisCodec_8hxx.html">OggVorbisCodec.hxx</a>"</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "<a class="code" href="OggVorbisAudioStream_8hxx.html">OggVorbisAudioStream.hxx</a>"</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span>CLAM</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span>AudioCodecs</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  OggVorbisCodec::OggVorbisCodec()</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  {</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#aac09df5410fcbe85bdbc384121882238"> 46</a></span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#aac09df5410fcbe85bdbc384121882238">OggVorbisCodec::~OggVorbisCodec</a>()</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  }</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> </div>
<div class="line"><a name="l00050"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#afd6ee5ff474fae65bdc583031aaea812"> 50</a></span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html" title="Codec inplementation for the Ogg Vorbis audio file format.">OggVorbisCodec</a>& <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#afd6ee5ff474fae65bdc583031aaea812">OggVorbisCodec::Instantiate</a>()</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="keyword">static</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html" title="Codec inplementation for the Ogg Vorbis audio file format.">OggVorbisCodec</a> theInstance;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">return</span> theInstance;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  }</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#aa788b369bc18d928e4ddcd7e8cc2da29"> 57</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#aa788b369bc18d928e4ddcd7e8cc2da29" title="Returns whether the filename is readable by the codec.">OggVorbisCodec::IsReadable</a>( std::string uri )<span class="keyword"> const</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  FILE* fileHandle;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  OggVorbis_File vorbisFile;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  memset( &vorbisFile, 0, <span class="keyword">sizeof</span>(OggVorbis_File) );</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  fileHandle = fopen( uri.c_str(), <span class="stringliteral">"rb"</span> );</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keywordflow">if</span> ( !fileHandle || ferror(fileHandle) != 0 )</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">//:TODO: possible exception throwing</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">//std::cerr << uri << std::endl;</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">//std::cerr << "Open failed! " << strerror( errno ) << std::endl;</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordtype">int</span> retval = ov_open( fileHandle, &vorbisFile, <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, 0 );</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">if</span> ( retval < 0 ) </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  fclose( fileHandle );</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">// MRJ: No need to close the fileHandle since libvorbisfile takes</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="comment">// its ownership if the ov_open call is successful</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  ov_clear( &vorbisFile );</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
<div class="line"><a name="l00091"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#ada35a3cbff154af193ca87f192bc59de"> 91</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#ada35a3cbff154af193ca87f192bc59de" title="Returns whether codec can write a file with such name and header parameters.">OggVorbisCodec::IsWritable</a>( std::string uri, <span class="keyword">const</span> <a class="code" href="classCLAM_1_1AudioFileHeader.html">AudioFileHeader</a>& hdr )<span class="keyword"> const</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="comment">// MRJ: These values were documented ( sort of ) in</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// the Vorbis I specification document</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> ( (hdr.GetChannels() < 0) || ( hdr.GetChannels() > 255) )</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">if</span> ( (hdr.GetSampleRate() < 8000.) || ( hdr.GetSampleRate() > 192000.) )</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  </div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>; </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#a0b6961aaa14c607058c01259d415ef89"> 104</a></span>  <a class="code" href="classCLAM_1_1AudioCodecs_1_1Stream.html" title="Streams provide I/O to and from an audio file of a given format.">Stream</a>* <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#a0b6961aaa14c607058c01259d415ef89" title="Returns an Stream object to read or write on.">OggVorbisCodec::GetStreamFor</a>( <span class="keyword">const</span> <a class="code" href="classCLAM_1_1AudioFile.html">AudioFile</a>& file )</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  {</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">return</span> <span class="keyword">new</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisAudioStream.html">OggVorbisAudioStream</a>(file);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#afe17e627aadfbfc628459fa53ec189a1"> 109</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#afe17e627aadfbfc628459fa53ec189a1" title="Returns a header structure containing file information (length, encoding...)">OggVorbisCodec::RetrieveHeaderData</a>( std::string uri, <a class="code" href="classCLAM_1_1AudioFileHeader.html">AudioFileHeader</a>& hdr )</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  FILE* fileHandle;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  OggVorbis_File vorbisFile;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span> ( ( fileHandle = fopen( uri.c_str(), <span class="stringliteral">"rb"</span> ) ) == <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> )</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keywordflow">if</span> ( ov_open( fileHandle, &vorbisFile, <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, 0 ) < 0 ) </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  {</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  fclose( fileHandle ); </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  }</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  vorbis_info* fileInfo = ov_info( &vorbisFile, -1 );</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span> ( !fileInfo ) <span class="comment">// File was encoded improperly</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  hdr.AddSampleRate();</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  hdr.AddChannels();</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  hdr.AddSamples();</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  hdr.AddFormat();</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  hdr.AddEncoding();</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  hdr.AddEndianess();</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  hdr.AddLength();</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  hdr.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  hdr.SetSampleRate( (<a class="code" href="namespaceCLAM.html#ab9c6321b061069797fcc173f61e8111a">TData</a>)fileInfo->rate );</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  hdr.SetChannels( (<a class="code" href="classint.html">TSize</a>)fileInfo->channels );</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  hdr.SetLength( (<a class="code" href="namespaceCLAM.html#aba1a20c1581f88d249cfcbcfd8a377c5">TTime</a>)ov_time_total( &vorbisFile, -1) * 1000. );</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  hdr.SetFormat( <a class="code" href="classCLAM_1_1EAudioFileFormat.html#ae000bb2bcfd911d628b9224942260e2aa92a45b40e780a8d2a5cbc48f91fd42ed">EAudioFileFormat::eVorbisMk1</a> );</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  hdr.SetEncoding( <a class="code" href="classCLAM_1_1EAudioFileEncoding.html#ac69c4eea4d9bf8ee8bc1b98e4b83b3bca2cec014263fa30c66d6fba933f51ebbe">EAudioFileEncoding::eDefault</a> );</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  hdr.SetEndianess( <a class="code" href="classCLAM_1_1EAudioFileEndianess.html#af9fa322db50d7fd96eb93e226819ba75ad9f3409d2eb48b5263becfe920955bd8">EAudioFileEndianess::eDefault</a> );</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordtype">double</span> duration = hdr.GetLength()/1000.;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  hdr.SetSamples( <a class="code" href="namespaceCLAM.html#a33598bc354b7042bc0d6529a155937a7">TSize</a>(duration*hdr.GetSampleRate()) );</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  </div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">// MRJ: No need to close the fileHandle since libvorbisfile takes</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="comment">// its ownership if the ov_open call is successful</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  ov_clear( &vorbisFile );</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> </div>
<div class="line"><a name="l00152"></a><span class="lineno"><a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#adc03ddc7a6072e613f6e547ed2027f4f"> 152</a></span>  <span class="keywordtype">void</span> <a class="code" href="classCLAM_1_1AudioCodecs_1_1OggVorbisCodec.html#adc03ddc7a6072e613f6e547ed2027f4f" title="Returns textual meta information embedded on the audio file such ID3 tags.">OggVorbisCodec::RetrieveTextDescriptors</a>( std::string uri, <a class="code" href="classCLAM_1_1AudioTextDescriptors.html">AudioTextDescriptors</a>& txtDesc )</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  {</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  FILE* fileHandle;</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  OggVorbis_File vorbisFile;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">if</span> ( ( fileHandle = fopen( uri.c_str(), <span class="stringliteral">"rb"</span> ) ) == <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a> )</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> ( ov_open( fileHandle, &vorbisFile, <a class="code" href="OSDefines_8hxx.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>, 0 ) < 0 ) </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  {</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  fclose( fileHandle ); </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  }</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  vorbis_info* fileInfo = ov_info( &vorbisFile, -1 );</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> ( !fileInfo ) <span class="comment">// File was encoded improperly</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> </div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  vorbis_comment* fileComments = ov_comment( &vorbisFile, -1 );</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">if</span> ( !fileComments ) <span class="comment">// there were no comments in the file!</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordtype">int</span> nComments = fileComments->comments;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordtype">char</span>** commentVector = fileComments->user_comments;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordtype">int</span>* commentLenVector = fileComments->comment_lengths;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> </div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">for</span> ( <span class="keywordtype">int</span> i = 0; i < nComments; i++ )</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  {</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="comment">// convert the current comment string into a std::string</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  std::string currentComment;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  currentComment.assign( commentVector[i], </div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  commentVector[i]+commentLenVector[i] );</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  std::string::iterator eqPos = std::find( currentComment.begin(),</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  currentComment.end(), <span class="charliteral">'='</span> );</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">if</span> ( eqPos < currentComment.end() )</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  {</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  std::string fieldName;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  fieldName.assign( currentComment.begin(), eqPos );</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">if</span>( fieldName == <span class="stringliteral">"ARTIST"</span> )</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  txtDesc.AddArtist();</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  txtDesc.GetArtist().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  }</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( fieldName == <span class="stringliteral">"TITLE"</span> )</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  txtDesc.AddTitle();</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  txtDesc.GetTitle().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  }</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( fieldName == <span class="stringliteral">"ALBUM"</span> )</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  {</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  txtDesc.AddAlbum();</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  txtDesc.GetAlbum().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  }</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( fieldName == <span class="stringliteral">"TRACKNUMBER"</span> )</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  {</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  txtDesc.AddTrackNumber();</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  txtDesc.GetTrackNumber().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  }</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( fieldName == <span class="stringliteral">"PERFORMER"</span> )</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  txtDesc.AddPerformer();</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  txtDesc.GetPerformer().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  }</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( fieldName == <span class="stringliteral">"COMPOSER"</span> )</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  {</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  txtDesc.AddComposer();</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  txtDesc.<a class="code" href="classCLAM_1_1DynamicType.html#a74d1557beda060a62f39b09f0c477fad" title="Method used to resize the data space of the dynamic type, necessary when some AddXXX() / RemoveXXX() ...">UpdateData</a>();</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  txtDesc.GetComposer().assign( eqPos+1, currentComment.end() );</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  }</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  std::string msg = fieldName;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  msg+= <span class="stringliteral">": Ignored comment field!"</span>;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="comment">//CLAM_WARNING( false, msg.c_str() );</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  }</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  }</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  </div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  }</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  ov_clear( &vorbisFile );</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  }</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> }</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> }</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
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