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<div class="title">tag_render.cpp</div> </div>
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<a href="tag__render_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: tag_render.cpp,v 1.44 2002/07/31 13:20:49 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> <span class="preprocessor">#include <memory.h></span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "<a class="code" href="tag__impl_8h.html">tag_impl.h</a>"</span> <span class="comment">//has <stdio.h> "tag.h" "header_tag.h" "frame.h" "field.h" "spec.h" "id3lib_strings.h" "utils.h"</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include "helpers.h"</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="writers_8h.html">writers.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__decorators_8h.html">id3/io_decorators.h</a>"</span> <span class="comment">//has "readers.h" "io_helpers.h" "utils.h"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="io__helpers_8h.html">io_helpers.h</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include "<a class="code" href="io__strings_8h.html">io_strings.h</a>"</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#if defined HAVE_SYS_PARAM_H</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor"></span><span class="preprocessor">#include <sys/param.h></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">using namespace </span>dami;</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00042"></a><span class="lineno"><a class="code" href="namespacedami_1_1id3_1_1v1.html#aeb5143c535f4bc42e6e13b429e4197e5"> 42</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacedami_1_1id3_1_1v1.html#aeb5143c535f4bc42e6e13b429e4197e5">id3::v1::render</a>(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer, <span class="keyword">const</span> <a class="code" href="class_i_d3___tag_impl.html">ID3_TagImpl</a>& tag)</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>  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>(<span class="stringliteral">"TAG"</span>, 3);</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>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, id3::v2::getTitle(tag), <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843a9081b85c7be8c29d9586ed3f42e9c5d1">ID3_V1_LEN_TITLE</a>);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, id3::v2::getArtist(tag), <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843a318eb86fac786d3effe37c3693eb7eb7">ID3_V1_LEN_ARTIST</a>);</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, id3::v2::getAlbum(tag), <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843a44c89fcc302b16d506d6cc8ad49db82f">ID3_V1_LEN_ALBUM</a>);</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, id3::v2::getYear(tag), <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843a2abe844d83449a5bda450d75d803c23c">ID3_V1_LEN_YEAR</a>);</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keywordtype">size_t</span> track = id3::v2::getTrackNum(tag);</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  String comment = id3::v2::getV1Comment(tag);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="keywordflow">if</span> (track > 0)</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  {</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, comment, <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843ab769f0f0de48ff0c8abff72106c25e4c">ID3_V1_LEN_COMMENT</a> - 2);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</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>);</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</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="keywordtype">char</span>) track);</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>  <span class="keywordflow">else</span></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>  <a class="code" href="namespacedami_1_1io.html#a48c5360321d009c714964e09953ba134">io::writeTrailingSpaces</a>(writer, comment, <a class="code" href="globals_8h.html#af5c00561c08372185f9acec6fffc0843ab769f0f0de48ff0c8abff72106c25e4c">ID3_V1_LEN_COMMENT</a>);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  }</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</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="keywordtype">char</span>) id3::v2::getGenreNum(tag));</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"> 66</span> <span class="keyword">namespace</span></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="keywordtype">void</span> renderFrames(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer, <span class="keyword">const</span> <a class="code" href="class_i_d3___tag_impl.html">ID3_TagImpl</a>& tag)</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>  <span class="keywordflow">for</span> (<a class="code" href="class_i_d3___tag_impl.html#aa682023c07df47c19db046540d260d08">ID3_TagImpl::const_iterator</a> iter = tag.<a class="code" href="class_i_d3___tag_impl.html#a9e0d55c54fb3697b9ebb34d060bfa101">begin</a>(); iter != tag.<a class="code" href="class_i_d3___tag_impl.html#af20fcbf50b599ea55b0ec955bcad1a9d">end</a>(); ++iter)</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  {</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">const</span> <a class="code" href="class_i_d3___frame.html" title="The representative class of an id3v2 frame.">ID3_Frame</a>* frame = *iter;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">if</span> (frame) frame->Render(writer);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  }</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> }</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
<div class="line"><a name="l00078"></a><span class="lineno"><a class="code" href="namespacedami_1_1id3_1_1v2.html#a59ee58381f7a615cc27b39990d39585f"> 78</a></span> <span class="keywordtype">void</span> <a class="code" href="namespacedami_1_1id3_1_1v2.html#a59ee58381f7a615cc27b39990d39585f">id3::v2::render</a>(<a class="code" href="class_i_d3___writer.html">ID3_Writer</a>& writer, <span class="keyword">const</span> <a class="code" href="class_i_d3___tag_impl.html">ID3_TagImpl</a>& tag)</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="comment">// There has to be at least one frame for there to be a tag...</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">if</span> (tag.<a class="code" href="class_i_d3___tag_impl.html#a3b8ddbfa27a87dc083bce598a15a3881">NumFrames</a>() == 0)</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>  ID3D_WARNING( <span class="stringliteral">"id3::v2::render(): no frames to render"</span> );</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</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>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  ID3D_NOTICE( <span class="stringliteral">"id3::v2::render(): rendering"</span> );</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <a class="code" href="class_i_d3___tag_header.html">ID3_TagHeader</a> hdr;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#a8c662dcf0cdb4a9ec5c06ee05b5210d4">SetSpec</a>(tag.<a class="code" href="class_i_d3___tag_impl.html#aaa19382ddecd2604e88c086c8ccd3982">GetSpec</a>());</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#abe86794051e52ed8cb749f53f953a918">SetExtended</a>(tag.<a class="code" href="class_i_d3___tag_impl.html#a1d01fe225c2e1f30ebf9d00d81f2acac">GetExtended</a>());</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#a14de3c5870cbd470f6d7d16855553389">SetExperimental</a>(tag.<a class="code" href="class_i_d3___tag_impl.html#ae6c469a8e6d84b395a18d31069ad15c5">GetExperimental</a>());</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#a4fb4f83562d9025234fc6ca8d9b758df">SetFooter</a>(tag.<a class="code" href="class_i_d3___tag_impl.html#a139154fd732f350293afe1e1bf382dd2">GetFooter</a>());</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// set up the encryption and grouping IDs</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="comment">// ...</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  String frms;</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <a class="code" href="classdami_1_1io_1_1_string_writer.html">io::StringWriter</a> frmWriter(frms);</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordflow">if</span> (!tag.<a class="code" href="class_i_d3___tag_impl.html#ae53a990acbed33819a48dfad94a16df9">GetUnsync</a>())</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>  ID3D_NOTICE( <span class="stringliteral">"id3::v2::render(): rendering frames"</span> );</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  renderFrames(frmWriter, tag);</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#ad2fc7cf544516829a72f6fe9385d963c">SetUnsync</a>(<span class="keyword">false</span>);</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  {</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  ID3D_NOTICE( <span class="stringliteral">"id3::v2::render(): rendering unsynced frames"</span> );</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <a class="code" href="classdami_1_1io_1_1_unsynced_writer.html">io::UnsyncedWriter</a> uw(frmWriter);</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  renderFrames(uw, tag);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  uw.<a class="code" href="classdami_1_1io_1_1_unsynced_writer.html#aa55a7e411535e4bada76e7c831b4679a" title="Flush the writer.">flush</a>();</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  ID3D_NOTICE( <span class="stringliteral">"id3::v2::render(): numsyncs = "</span> << uw.<a class="code" href="classdami_1_1io_1_1_unsynced_writer.html#a6dd0f4d7b03af3e5e2a749ed8e82b8c3">getNumSyncs</a>() );</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#ad2fc7cf544516829a72f6fe9385d963c">SetUnsync</a>(uw.<a class="code" href="classdami_1_1io_1_1_unsynced_writer.html#a6dd0f4d7b03af3e5e2a749ed8e82b8c3">getNumSyncs</a>() > 0);</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="keywordtype">size_t</span> frmSize = frms.size();</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (frmSize == 0)</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>  ID3D_WARNING( <span class="stringliteral">"id3::v2::render(): rendered frame size is 0 bytes"</span> );</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">return</span>;</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>  </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="comment">// zero the remainder of the buffer so that our padding bytes are zero</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <a class="code" href="globals_8h.html#a31c81a77cfd373514f7878719897fca6">luint</a> nPadding = tag.<a class="code" href="class_i_d3___tag_impl.html#a40172ff4497eb53ab73eacdae4fe9e0b">PaddingSize</a>(frmSize);</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  ID3D_NOTICE( <span class="stringliteral">"id3::v2::render(): padding size = "</span> << nPadding );</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>  hdr.<a class="code" href="class_i_d3___header.html#a59ca0d4289297b721cffdc1c33014d5c">SetDataSize</a>(frmSize + tag.<a class="code" href="class_i_d3___tag_impl.html#acc2c9a233d8cda42e6d3fc5ffdd14ca3">GetExtendedBytes</a>() + nPadding);</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#ad52a90ddf66bfff6fbf924747453af81">Render</a>(writer);</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</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>(frms.data(), frms.size());</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < nPadding; ++i)</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>  <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="l00134"></a><span class="lineno"> 134</span>  {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">break</span>;</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>  }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> }</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> </div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="code" href="class_i_d3___tag_impl.html#ad2c9a88974f03858820ab5e3aa7a2fb2"> 140</a></span> <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___tag_impl.html#ad2c9a88974f03858820ab5e3aa7a2fb2">ID3_TagImpl::Size</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keywordflow">if</span> (this->NumFrames() == 0)</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="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  }</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <a class="code" href="class_i_d3___tag_header.html">ID3_TagHeader</a> hdr;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  hdr.<a class="code" href="class_i_d3___tag_header.html#a8c662dcf0cdb4a9ec5c06ee05b5210d4">SetSpec</a>(this->GetSpec());</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordtype">size_t</span> bytesUsed = hdr.<a class="code" href="class_i_d3___tag_header.html#ac84d93b59696e0a75688486543f71024">Size</a>();</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>  <span class="keywordtype">size_t</span> frameBytes = 0;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">for</span> (<a class="code" href="class_i_d3___tag_impl.html#aa682023c07df47c19db046540d260d08">const_iterator</a> cur = _frames.begin(); cur != _frames.end(); ++cur)</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>  <span class="keywordflow">if</span> (*cur)</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  (*cur)->SetSpec(this->GetSpec());</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  frameBytes += (*cur)->Size();</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</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>  </div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (!frameBytes)</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">return</span> 0;</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>  bytesUsed += frameBytes;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="comment">// add 30% for sync</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">if</span> (this->GetUnsync())</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>  bytesUsed += bytesUsed / 3;</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>  </div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  bytesUsed += this->PaddingSize(bytesUsed);</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">return</span> bytesUsed;</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> </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div>
<div class="line"><a name="l00178"></a><span class="lineno"><a class="code" href="class_i_d3___tag_impl.html#aab5b8ba999e4f7430729cbd5d9fd0454"> 178</a></span> <span class="keywordtype">void</span> <a class="code" href="class_i_d3___tag_impl.html#aab5b8ba999e4f7430729cbd5d9fd0454">ID3_TagImpl::RenderExtHeader</a>(<a class="code" href="globals_8h.html#a65f85814a8290f9797005d3b28e7e5fc">uchar</a> *buffer)</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> {</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</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="l00181"></a><span class="lineno"> 181</span>  {</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>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  return ;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> }</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div>
<div class="line"><a name="l00188"></a><span class="lineno"><a class="code" href="tag__render_8cpp.html#ab373932fb4a53544ab281f2094d6205d"> 188</a></span> <span class="preprocessor">#define ID3_PADMULTIPLE (2048)</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"><a class="code" href="tag__render_8cpp.html#ab2a1fa16a25bc8e3b8aa28b1a2b6b6c5"> 189</a></span> <span class="preprocessor"></span><span class="preprocessor">#define ID3_PADMAX (4096)</span></div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> </div>
<div class="line"><a name="l00192"></a><span class="lineno"><a class="code" href="class_i_d3___tag_impl.html#a40172ff4497eb53ab73eacdae4fe9e0b"> 192</a></span> <span class="keywordtype">size_t</span> <a class="code" href="class_i_d3___tag_impl.html#a40172ff4497eb53ab73eacdae4fe9e0b">ID3_TagImpl::PaddingSize</a>(<span class="keywordtype">size_t</span> curSize)<span class="keyword"> const</span></div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <a class="code" href="globals_8h.html#a31c81a77cfd373514f7878719897fca6">luint</a> newSize = 0;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="comment">// if padding is switched off</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">if</span> (! _is_padded)</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  {</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</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="comment">// if the old tag was large enough to hold the new tag, then we will simply</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">// pad out the difference - that way the new tag can be written without</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="comment">// shuffling the rest of the song file around</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordflow">if</span> ((this->GetPrependedBytes()-<a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a> > 0) &&</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  (this->GetPrependedBytes()-<a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a> >= curSize) && </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  (this->GetPrependedBytes()-<a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a> - curSize) < <a class="code" href="tag__render_8cpp.html#ab2a1fa16a25bc8e3b8aa28b1a2b6b6c5">ID3_PADMAX</a>)</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  {</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  newSize = this->GetPrependedBytes()-<a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a>;</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">else</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>  <a class="code" href="globals_8h.html#a31c81a77cfd373514f7878719897fca6">luint</a> tempSize = curSize + <a class="code" href="tag__impl_8cpp.html#af1f761cbfe07a83bb9450ab5661bbbae">ID3_GetDataSize</a>(*<span class="keyword">this</span>) +</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  this->GetAppendedBytes() + <a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a>;</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="comment">// this method of automatic padding rounds the COMPLETE FILE up to the</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="comment">// nearest 2K. If the file will already be an even multiple of 2K (with</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="comment">// the tag included) then we just add another 2K of padding</span></div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  tempSize = ((tempSize / <a class="code" href="tag__render_8cpp.html#ab373932fb4a53544ab281f2094d6205d">ID3_PADMULTIPLE</a>) + 1) * <a class="code" href="tag__render_8cpp.html#ab373932fb4a53544ab281f2094d6205d">ID3_PADMULTIPLE</a>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  </div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  <span class="comment">// the size of the new tag is the new filesize minus the audio data</span></div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  newSize = tempSize - <a class="code" href="tag__impl_8cpp.html#af1f761cbfe07a83bb9450ab5661bbbae">ID3_GetDataSize</a>(*<span class="keyword">this</span>) - this->GetAppendedBytes () -</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <a class="code" href="class_i_d3___tag_header.html#a4182519e23dc329bdf25ab1213bd6096a74cf4937e78303a0b961dfb12c9f2b04">ID3_TagHeader::SIZE</a>;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  }</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordflow">return</span> newSize - curSize;</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> </div>
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