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<a href="MIDISongPlayer_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) 2001-2004 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"> * This program is free software; you can redistribute it and/or modify</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * it under the terms of the GNU General Public License as published by</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * (at your option) any later version.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * This program is distributed in the hope that it will be useful,</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * GNU General Public License for more details.</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * You should have received a copy of the GNU General Public License</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * along with this program; if not, write to the Free Software</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * MIDIFileReader C++ classes</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * This code is part of the CLAM library, but also usable stand-alone.</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * Maarten de Boer <mdeboer@iua.upf.es></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include <vector></span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "<a class="code" href="MIDISongPlayer_8hxx.html">MIDISongPlayer.hxx</a>"</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "<a class="code" href="MIDITrack_8hxx.html">MIDITrack.hxx</a>"</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "<a class="code" href="MIDISong_8hxx.html">MIDISong.hxx</a>"</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> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">namespace </span>MIDI</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> {</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">class </span>TrackPlayer</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="comment">/* a helper class for SongPlayerImpl to iterate through each track */</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="keyword">friend</span> <span class="keyword">class </span>SongPlayerImpl;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  Track* mTrack;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  std::list<Event*>::const_iterator mIterator;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  TrackPlayer(Track* track);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> </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>  TrackPlayer::TrackPlayer(Track* track)</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  {</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  mTrack = track;</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  mIterator = mTrack->Begin();</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> </div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">class </span>SongPlayerImpl</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  {</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">/* hidden implementation of class SongPlayer */</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">friend</span> <span class="keyword">class </span>SongPlayer;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  Song* mSong;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  std::vector<TrackPlayer*> mTrackPlayerList;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  SongPlayerImpl(Song* song)</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  Init(song);</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>  </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordtype">void</span> Init(Song* song)</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>  mTrackPlayerList.clear();</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  mSong = song;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (mSong)</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  {</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0;i<mSong->Tracks();i++)</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  mTrackPlayerList.push_back(</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">new</span> TrackPlayer(mSong->GetTrack(i)));</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>  }</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>  <span class="keywordtype">bool</span> GetEvent(Event& event,<span class="keywordtype">int</span>& trackId)</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <a class="code" href="namespaceMIDI.html#a726bc5cd0c4929bfd27c25db6a93479c">Ticks</a> smallest = 0;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordtype">int</span> smallestId = -1;</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>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> i=0;i<mTrackPlayerList.size();i++)</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="comment">/* look for the track with the next event */</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> (mTrackPlayerList[i]->mIterator != </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  mTrackPlayerList[i]->mTrack->End())</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>  Event* ev = *mTrackPlayerList[i]->mIterator;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (smallestId==-1 || ev->GetTicks()<smallest)</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>  smallest = ev->GetTicks();</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  smallestId = i;</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>  }</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> (smallestId != -1)</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  {</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="comment">/* return it and increment the iterator of that track */</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">event</span> = *(*(mTrackPlayerList[smallestId]->mIterator));</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  trackId = smallestId;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  mTrackPlayerList[smallestId]->mIterator++;</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">return</span> <span class="keyword">true</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"> 104</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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> </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="classMIDI_1_1SongPlayer.html#a96a4a7c644b6391fbf37a75b0fcf3e76"> 109</a></span>  <a class="code" href="classMIDI_1_1SongPlayer.html#a96a4a7c644b6391fbf37a75b0fcf3e76">SongPlayer::SongPlayer</a>(<a class="code" href="classMIDI_1_1Song.html">Song</a>* song)</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>  mImpl = <span class="keyword">new</span> SongPlayerImpl(song);</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="code" href="classMIDI_1_1SongPlayer.html#a7a5112b7da57a7f08605f1901c0c3177"> 114</a></span>  <span class="keywordtype">void</span> <a class="code" href="classMIDI_1_1SongPlayer.html#a7a5112b7da57a7f08605f1901c0c3177">SongPlayer::Init</a>(<a class="code" href="classMIDI_1_1Song.html">Song</a>* song)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  mImpl->Init(song);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"><a class="code" href="classMIDI_1_1SongPlayer.html#aa3f06fb4e90e3e19218253c4a10cf16a"> 119</a></span>  <a class="code" href="classMIDI_1_1SongPlayer.html#aa3f06fb4e90e3e19218253c4a10cf16a">SongPlayer::~SongPlayer</a>()</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="keyword">delete</span> mImpl;</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> </div>
<div class="line"><a name="l00124"></a><span class="lineno"><a class="code" href="classMIDI_1_1SongPlayer.html#ad00e155ed8f52da15c80e8a8c15db7d6"> 124</a></span>  <span class="keywordtype">bool</span> <a class="code" href="classMIDI_1_1SongPlayer.html#ad00e155ed8f52da15c80e8a8c15db7d6">SongPlayer::GetEvent</a>(<a class="code" href="classMIDI_1_1Event.html">Event</a>& event,<span class="keywordtype">int</span>& trackId)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  {</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> mImpl->GetEvent(event,trackId);</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>  </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> </div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
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