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<div class="title">header_tag.cpp</div> </div>
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<a href="header__tag_8cpp.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">// $Id: header_tag.cpp,v 1.25 2003/03/02 14:30:46 t1mpy Exp $</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// id3lib: a C++ library for creating and manipulating id3v1/v2 tags</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Copyright 1999, 2000 Scott Thomas Haug</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// Copyright 2002 Thijmen Klok (thijmen@id3lib.org)</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// This library is free software; you can redistribute it and/or modify it</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// under the terms of the GNU Library General Public License as published by</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// the Free Software Foundation; either version 2 of the License, or (at your</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// option) any later version.</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">//</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// This library is distributed in the hope that it will be useful, but WITHOUT</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">// License for more details.</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">//</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// You should have received a copy of the GNU Library General Public License</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// along with this library; if not, write to the Free Software Foundation,</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">// Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// The id3lib authors encourage improvements and optimisations to be sent to</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// the id3lib coordinator. Please see the README file for details on where to</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// send such submissions. See the AUTHORS file for a list of people who have</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment">// contributed to id3lib. See the ChangeLog file for a list of changes to</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// id3lib. These files are distributed with id3lib at</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// http://download.sourceforge.net/id3lib/</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="header__tag_8h.html">header_tag.h</a>"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "id3/utils.h"</span> <span class="comment">// has <config.h> "id3/id3lib_streams.h" "id3/globals.h" "id3/id3lib_strings.h"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="tag_8h.html">tag.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="io__helpers_8h.html">io_helpers.h</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="spec_8h.html">spec.h</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">using namespace </span>dami;</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">const</span> <span class="keywordtype">char</span>* <span class="keyword">const</span> <a class="code" href="class_i_d3___tag_header.html#a43bd89984ebf5777677d472a3fccaf3d">ID3_TagHeader::ID</a> = <span class="stringliteral">"ID3"</span>;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> </div>
<div class="line"><a name="l00039"></a><span class="lineno"><a class="code" href="class_i_d3___tag_header.html#a8c662dcf0cdb4a9ec5c06ee05b5210d4"> 39</a></span> <span class="keywordtype">bool</span> <a class="code" href="class_i_d3___tag_header.html#a8c662dcf0cdb4a9ec5c06ee05b5210d4">ID3_TagHeader::SetSpec</a>(<a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612">ID3_V2Spec</a> spec)</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordtype">bool</span> changed = this-><a class="code" href="class_i_d3___header.html#ae6f5c68fbe93d4df26fed5c2935a27e3">ID3_Header::SetSpec</a>(spec);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="keywordflow">if</span> (changed)</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>  <span class="keywordflow">if</span> (_info)</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  {</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  _flags.set(HEADER_FLAG_EXPERIMENTAL, _info->is_experimental);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  _flags.set(HEADER_FLAG_EXTENDED, _info->is_extended);</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"> 50</span>  <span class="keywordflow">return</span> changed;</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> </div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="code" href="class_i_d3___tag_header.html#ac84d93b59696e0a75688486543f71024"> 53</a></span> <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___tag_header.html#ac84d93b59696e0a75688486543f71024">ID3_TagHeader::Size</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keywordtype">size_t</span> bytesUsed = <a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> </div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">if</span> (_info->is_extended)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  bytesUsed += _info->extended_bytes;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</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>  <span class="keywordflow">return</span> bytesUsed;</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> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
<div class="line"><a name="l00066"></a><span class="lineno"><a class="code" href="class_i_d3___tag_header.html#ad52a90ddf66bfff6fbf924747453af81"> 66</a></span> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___tag_header.html#ad52a90ddf66bfff6fbf924747453af81">ID3_TagHeader::Render</a>(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer)<span class="keyword"> const</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  writer.<a class="code" href="class_i_d3___writer.html#a287fd94f06b37fb638029b904e6f1d42" title="Write up to len characters into buf and advance the internal position accordingly.">writeChars</a>((<a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> *) ID, strlen(ID));</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  writer.<a class="code" href="class_i_d3___writer.html#a2fd7fda2100f38a45038b80de8ed4432" title="Write a single character and advance the internal position.">writeChar</a>(<a class="code" href="spec_8cpp.html#a9791b9b9639436f8bdeadcdf5b0afb01">ID3_V2SpecToVer</a>(<a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612a05369f9f8d36bd4d8ebfd5188f156f6b">ID3V2_LATEST</a>));</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  writer.<a class="code" href="class_i_d3___writer.html#a2fd7fda2100f38a45038b80de8ed4432" title="Write a single character and advance the internal position.">writeChar</a>(<a class="code" href="spec_8cpp.html#a1c744d3bdf1fc3cf2fd9e2c5700af223">ID3_V2SpecToRev</a>(<a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612a05369f9f8d36bd4d8ebfd5188f156f6b">ID3V2_LATEST</a>));</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>  <span class="comment">// set the flags byte in the header</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  writer.<a class="code" href="class_i_d3___writer.html#a2fd7fda2100f38a45038b80de8ed4432" title="Write a single character and advance the internal position.">writeChar</a>(static_cast<uchar>(_flags.get() & <a class="code" href="globals_8h.html#a0702746ecb6d016a15f759948f39ef69">MASK8</a>));</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="namespacedami_1_1io.html#a0cb48ad8042a6726eea33481f6a92ee0">io::writeUInt28</a>(writer, this->GetDataSize()); <span class="comment">//now includes the extended header</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="comment">// now we render the extended header</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (_flags.test(HEADER_FLAG_EXTENDED))</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">if</span> (this->GetSpec() == <a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612a1882d42672435168a929dec16e329a24">ID3V2_4_0</a>)</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>  <a class="code" href="namespacedami_1_1io.html#a0cb48ad8042a6726eea33481f6a92ee0">io::writeUInt28</a>(writer, 6); <span class="comment">//write 4 bytes of v2.4.0 ext header containing size '6'</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <a class="code" href="namespacedami_1_1io.html#aca584020fcdd2925490c52af0eca5dcb">io::writeBENumber</a>(writer, 1, 1); <span class="comment">//write that it has only one flag byte (value '1')</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="namespacedami_1_1io.html#aca584020fcdd2925490c52af0eca5dcb">io::writeBENumber</a>(writer, 0, 1); <span class="comment">//write flag byte with value '0'</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  }</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this->GetSpec() == <a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612af1a537f047f6947efbc735bd0685a9df">ID3V2_3_0</a>)</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="namespacedami_1_1io.html#aca584020fcdd2925490c52af0eca5dcb">io::writeBENumber</a>(writer, 6, <span class="keyword">sizeof</span>(uint32));</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < 6; ++i)</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordflow">if</span> (writer.<a class="code" href="class_i_d3___writer.html#a2fd7fda2100f38a45038b80de8ed4432" title="Write a single character and advance the internal position.">writeChar</a>(<span class="charliteral">'\0'</span>) == <a class="code" href="class_i_d3___writer.html#ad86a1c643939307f19d311d8e272a68b">ID3_Writer::END_OF_WRITER</a>)</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  {</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</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>  }</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="comment">// else //not implemented</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</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"><a class="code" href="class_i_d3___tag_header.html#a2e792b2e35d5163f51c8171e6bd8020d"> 101</a></span> <span class="keywordtype">bool</span> <a class="code" href="class_i_d3___tag_header.html#a2e792b2e35d5163f51c8171e6bd8020d">ID3_TagHeader::Parse</a>(<a class="code" href="class_i_d3___reader.html">ID3_Reader</a>& reader)</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>  <a class="code" href="classdami_1_1io_1_1_exit_trigger.html">io::ExitTrigger</a> et(reader);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keywordflow">if</span> (!<a class="code" href="class_i_d3___tag.html#abeaf68b668a689f2ce50094131b9183b" title="Analyses a buffer to determine if we have a valid ID3v2 tag header.">ID3_Tag::IsV2Tag</a>(reader))</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>  ID3D_NOTICE( <span class="stringliteral">"ID3_TagHeader::Parse(): not an id3v2 header"</span> );</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keywordflow">return</span> <span class="keyword">false</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"> 109</span> </div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> <span class="keywordtype">id</span>[3];</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  reader.<a class="code" href="class_i_d3___reader.html#a271015a0481e80ca63bfea9ff9320a50" title="Read up to len characters into buf and advance the internal position accordingly.">readChars</a>(<span class="keywordtype">id</span>, 3);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// The spec version is determined with the MAJOR and MINOR OFFSETs</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> major = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>();</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> minor = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>();</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  this->SetSpec(<a class="code" href="spec_8cpp.html#a524c18ac3e56647f77403d8393b1b5e0">ID3_VerRevToV2Spec</a>(major, minor));</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="comment">// Get the flags at the appropriate offset</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  _flags.set(static_cast<ID3_Flags::TYPE>(reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>()));</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> </div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="comment">// set the data size</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  this->SetDataSize(<a class="code" href="namespacedami_1_1io.html#a34fe31bc8d1ac37a6a5f33b93abcd322">io::readUInt28</a>(reader));</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>  <span class="keywordflow">if</span> (_flags.test(HEADER_FLAG_EXTENDED) && this->GetSpec() == <a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612a20e44406a184e6ae825e38dcf3980c4f">ID3V2_2_1</a>)</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="comment">//couldn't find anything about this in the draft specifying 2.2.1 -> http://www.id3.org/pipermail/id3v2/2000-April/000126.html</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  _flags.set(HEADER_FLAG_EXTENDED, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  _info->extended_bytes = 0;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="comment">// rest is checked at ParseExtended()</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  }</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  et.<a class="code" href="classdami_1_1io_1_1_exit_trigger.html#af65edaf06b4439c97de06520e3903868">setExitPos</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>());</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> }</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="code" href="class_i_d3___tag_header.html#a3efb8ababe8761607ec93568f1de7705"> 134</a></span> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___tag_header.html#a3efb8ababe8761607ec93568f1de7705">ID3_TagHeader::ParseExtended</a>(<a class="code" href="class_i_d3___reader.html">ID3_Reader</a>& reader)</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keywordflow">if</span> (this->GetSpec() == <a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612af1a537f047f6947efbc735bd0685a9df">ID3V2_3_0</a>)</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"> Extended header size $xx xx xx xx</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="comment"> Extended Flags $xx xx</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="comment"> Size of padding $xx xx xx xx</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">// skip over header size, we are not using it anyway, we calculate it</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>()+4); <span class="comment">//Extended header size</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">//io::readBENumber(reader, 4); //Extended header size</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  uint16 tmpval = <a class="code" href="namespacedami_1_1io.html#a4795dfc73c82683365f2738567c1d805">io::readBENumber</a>(reader, 2); <span class="comment">//Extended Flags</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="comment">// skip over padding size, we are not using it anyway</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>()+4); <span class="comment">//Size of padding</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="comment">// io::readBENumber(reader, 4); //Size of padding</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">if</span> (tmpval != 0) <span class="comment">//there is only one flag defined in ID3V2_3_0: crc</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"> 152</span>  <span class="comment">//skip over crc data, we are not using it anyway</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>()+4); <span class="comment">//Crc</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="comment">//io::readBENumber(reader, 4); //Crc</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  _info->extended_bytes = 14;</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">else</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  _info->extended_bytes = 10;</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> (this->GetSpec() == <a class="code" href="globals_8h.html#a48b13eb6cb3c520195901516dee1e612a1882d42672435168a929dec16e329a24">ID3V2_4_0</a>)</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> <span class="comment">/*</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> Extended header size 4 * %0xxxxxxx</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> Number of flag bytes $01</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> Extended Flags $xx</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  uint16 i;</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  uint16 extrabytes;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> </div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <a class="code" href="namespacedami_1_1io.html#a34fe31bc8d1ac37a6a5f33b93abcd322">io::readUInt28</a>(reader);</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> extflagbytes = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>(); <span class="comment">//Number of flag bytes</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <a class="code" href="class_i_d3___flags.html">ID3_Flags</a>* extflags[1]; <span class="comment">// ID3V2_4_0 has 1 flag byte, extflagbytes should be equal to 1</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">for</span> (i = 0; i < extflagbytes; ++i)</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  extflags[i] = <span class="keyword">new</span> <a class="code" href="class_i_d3___flags.html">ID3_Flags</a>;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  extflags[i]-><a class="code" href="class_i_d3___flags.html#a6aa5d0be84c92c189c777c6b77fdda06">set</a>(reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>()); <span class="comment">//flags</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>  extrabytes = 0;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">//extflags[0]->test(EXT_HEADER_FLAG_BIT1); // ID3V2_4_0 ext header flag bit 1 *should* be 0</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keywordflow">if</span> (extflags[0]->test(EXT_HEADER_FLAG_BIT2))</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  {</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="comment">// ID3V2_4_0 ext header flag bit 2 = Tag is an update</span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="comment">// read size</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  extrabytes += 1; <span class="comment">// add a byte for the char containing the extflagdatasize</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> extheaderflagdatasize = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>();</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  extrabytes += extheaderflagdatasize;</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  <span class="comment">// Set the cursor right; we are not parsing the data, no-one is using extended flags anyway</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>() + extheaderflagdatasize);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">//reader.readChars(buf, extheaderflagdatasize); //buf should be at least 127 bytes = max extended header flagdata size</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  }</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">if</span> (extflags[0]->test(EXT_HEADER_FLAG_BIT3))</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="comment">// ID3V2_4_0 ext header flag bit 3 = CRC data present</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="comment">// read size</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  extrabytes += 1; <span class="comment">// add a byte for the char containing the extflagdatasize</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> extheaderflagdatasize = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>();</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  extrabytes += extheaderflagdatasize;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="comment">// Set the cursor right; we are not parsing the data, no-one is using extended flags anyway</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>() + extheaderflagdatasize);</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="comment">//reader.readChars(buf, extheaderflagdatasize); //buf should be at least 127 bytes = max extended header flagdata size</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordflow">if</span> (extflags[0]->test(EXT_HEADER_FLAG_BIT4))</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="comment">// ID3V2_4_0 ext header flag bit 4 = Tag restrictions</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="comment">// read size</span></div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  extrabytes += 1; <span class="comment">// add a byte for the char containing the extflagdatasize</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> extheaderflagdatasize = reader.<a class="code" href="class_i_d3___reader.html#a36e43a57e3ff194ed6e0416c409fbed3" title="Read a single character and advance the internal position.">readChar</a>();</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  extrabytes += extheaderflagdatasize;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="comment">// Set the cursor right; we are not parsing the data, no-one is using extended flags anyway</span></div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  reader.<a class="code" href="class_i_d3___reader.html#a1630f369cc7aa65a2279542715e9f483" title="Set the value of the current position for reading.">setCur</a>(reader.<a class="code" href="class_i_d3___reader.html#a232935e138e44ea49e5a289fb8d7ac94" title="Return the current position in the reader.">getCur</a>() + extheaderflagdatasize);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="comment">//reader.readChars(buf, extheaderflagdatasize); //buf should be at least 127 bytes = max extended header flagdata size</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  _info->extended_bytes = 5 + extflagbytes + extrabytes;</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="comment">// a bit unorthodox, but since we are not using any of the extended header, but were merely</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="comment">// parsing it to get the cursor right, we delete it. Be Gone !</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  _flags.set(HEADER_FLAG_EXTENDED, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">if</span> (_info)</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  {</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  _data_size -= _info->extended_bytes;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  _info->extended_bytes = 0;</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }<span class="comment">//else there is a tag with a higher or lower version than supported</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> </div>
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