/apidocs/echonest.support.midi.RawInstreamFile-pysrc.html
HTML | 231 lines | 200 code | 10 blank | 21 comment | 0 complexity | 9ca209127e5d58ecf3da58b589edd972 MD5 | raw file
1<?xml version="1.0" encoding="ascii"?> 2<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 3 "DTD/xhtml1-transitional.dtd"> 4<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> 5<head> 6 <title>echonest.support.midi.RawInstreamFile</title> 7 <link rel="stylesheet" href="epydoc.css" type="text/css" /> 8 <script type="text/javascript" src="epydoc.js"></script> 9</head> 10 11<body bgcolor="white" text="black" link="blue" vlink="#204080" 12 alink="#204080"> 13<!-- ==================== NAVIGATION BAR ==================== --> 14<table class="navbar" border="0" width="100%" cellpadding="0" 15 bgcolor="#a0c0ff" cellspacing="0"> 16 <tr valign="middle"> 17 18 <!-- Tree link --> 19 <th> <a 20 href="module-tree.html">Trees</a> </th> 21 22 <!-- Index link --> 23 <th> <a 24 href="identifier-index.html">Indices</a> </th> 25 26 <!-- Help link --> 27 <th> <a 28 href="help.html">Help</a> </th> 29 30 <!-- Project homepage --> 31 <th class="navbar" align="right" width="100%"> 32 <table border="0" cellpadding="0" cellspacing="0"> 33 <tr><th class="navbar" align="center" 34 ><a class="navbar" target="_top" href="http://code.google.com/p/echo-nest-remix/">Project Homepage</a></th> 35 </tr></table></th> 36 </tr> 37</table> 38<table width="100%" cellpadding="0" cellspacing="0"> 39 <tr valign="top"> 40 <td width="100%"> 41 <span class="breadcrumbs"> 42 <a href="echonest-module.html">Package echonest</a> :: 43 <a href="echonest.support-module.html">Package support</a> :: 44 <a href="echonest.support.midi-module.html">Package midi</a> :: 45 Module RawInstreamFile 46 </span> 47 </td> 48 <td> 49 <table cellpadding="0" cellspacing="0"> 50 <!-- hide/show private --> 51 <tr><td align="right"><span class="options">[<a href="javascript:void(0);" class="privatelink" 52 onclick="toggle_private();">hide private</a>]</span></td></tr> 53 <tr><td align="right"><span class="options" 54 >[<a href="frames.html" target="_top">frames</a 55 >] | <a href="echonest.support.midi.RawInstreamFile-pysrc.html" 56 target="_top">no frames</a>]</span></td></tr> 57 </table> 58 </td> 59 </tr> 60</table> 61<h1 class="epydoc">Source Code for <a href="echonest.support.midi.RawInstreamFile-module.html">Module echonest.support.midi.RawInstreamFile</a></h1> 62<pre class="py-src"> 63<a name="L1"></a><tt class="py-lineno"> 1</tt> <tt class="py-line"><tt class="py-comment"># -*- coding: ISO-8859-1 -*-</tt> </tt> 64<a name="L2"></a><tt class="py-lineno"> 2</tt> <tt class="py-line"> </tt> 65<a name="L3"></a><tt class="py-lineno"> 3</tt> <tt class="py-line"><tt class="py-comment"># standard library imports</tt> </tt> 66<a name="L4"></a><tt class="py-lineno"> 4</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">types</tt> <tt class="py-keyword">import</tt> <tt class="py-name">StringType</tt> </tt> 67<a name="L5"></a><tt class="py-lineno"> 5</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt class="py-name">struct</tt> <tt class="py-keyword">import</tt> <tt class="py-name">unpack</tt> </tt> 68<a name="L6"></a><tt class="py-lineno"> 6</tt> <tt class="py-line"> </tt> 69<a name="L7"></a><tt class="py-lineno"> 7</tt> <tt class="py-line"><tt class="py-comment"># custom import</tt> </tt> 70<a name="L8"></a><tt class="py-lineno"> 8</tt> <tt class="py-line"><tt class="py-keyword">from</tt> <tt id="link-0" class="py-name" targets="Module echonest.support.midi.DataTypeConverters=echonest.support.midi.DataTypeConverters-module.html"><a title="echonest.support.midi.DataTypeConverters" class="py-name" href="#" onclick="return doclink('link-0', 'DataTypeConverters', 'link-0');">DataTypeConverters</a></tt> <tt class="py-keyword">import</tt> <tt id="link-1" class="py-name" targets="Function echonest.support.midi.DataTypeConverters.readBew()=echonest.support.midi.DataTypeConverters-module.html#readBew,Method echonest.support.midi.RawInstreamFile.RawInstreamFile.readBew()=echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#readBew"><a title="echonest.support.midi.DataTypeConverters.readBew 71echonest.support.midi.RawInstreamFile.RawInstreamFile.readBew" class="py-name" href="#" onclick="return doclink('link-1', 'readBew', 'link-1');">readBew</a></tt><tt class="py-op">,</tt> <tt id="link-2" class="py-name" targets="Function echonest.support.midi.DataTypeConverters.readVar()=echonest.support.midi.DataTypeConverters-module.html#readVar"><a title="echonest.support.midi.DataTypeConverters.readVar" class="py-name" href="#" onclick="return doclink('link-2', 'readVar', 'link-2');">readVar</a></tt><tt class="py-op">,</tt> <tt id="link-3" class="py-name" targets="Function echonest.support.midi.DataTypeConverters.varLen()=echonest.support.midi.DataTypeConverters-module.html#varLen"><a title="echonest.support.midi.DataTypeConverters.varLen" class="py-name" href="#" onclick="return doclink('link-3', 'varLen', 'link-3');">varLen</a></tt> </tt> 72<a name="L9"></a><tt class="py-lineno"> 9</tt> <tt class="py-line"> </tt> 73<a name="L10"></a><tt class="py-lineno"> 10</tt> <tt class="py-line"> </tt> 74<a name="RawInstreamFile"></a><div id="RawInstreamFile-def"><a name="L11"></a><tt class="py-lineno"> 11</tt> <a class="py-toggle" href="#" id="RawInstreamFile-toggle" onclick="return toggle('RawInstreamFile');">-</a><tt class="py-line"><tt class="py-keyword">class</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html">RawInstreamFile</a><tt class="py-op">:</tt> </tt> 75</div><div id="RawInstreamFile-collapsed" style="display:none;" pad="+++" indent="++++"></div><div id="RawInstreamFile-expanded"><a name="L12"></a><tt class="py-lineno"> 12</tt> <tt class="py-line"> </tt> 76<a name="L13"></a><tt class="py-lineno"> 13</tt> <tt class="py-line"> <tt class="py-docstring">""" </tt> </tt> 77<a name="L14"></a><tt class="py-lineno"> 14</tt> <tt class="py-line"><tt class="py-docstring"> </tt> </tt> 78<a name="L15"></a><tt class="py-lineno"> 15</tt> <tt class="py-line"><tt class="py-docstring"> It parses and reads data from an input file. It takes care of big </tt> </tt> 79<a name="L16"></a><tt class="py-lineno"> 16</tt> <tt class="py-line"><tt class="py-docstring"> endianess, and keeps track of the cursor position. The midi parser </tt> </tt> 80<a name="L17"></a><tt class="py-lineno"> 17</tt> <tt class="py-line"><tt class="py-docstring"> only reads from this object. Never directly from the file. </tt> </tt> 81<a name="L18"></a><tt class="py-lineno"> 18</tt> <tt class="py-line"><tt class="py-docstring"> </tt> </tt> 82<a name="L19"></a><tt class="py-lineno"> 19</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt> 83<a name="L20"></a><tt class="py-lineno"> 20</tt> <tt class="py-line"> </tt> 84<a name="RawInstreamFile.__init__"></a><div id="RawInstreamFile.__init__-def"><a name="L21"></a><tt class="py-lineno"> 21</tt> <a class="py-toggle" href="#" id="RawInstreamFile.__init__-toggle" onclick="return toggle('RawInstreamFile.__init__');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#__init__">__init__</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">infile</tt><tt class="py-op">=</tt><tt class="py-string">''</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 85</div><div id="RawInstreamFile.__init__-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.__init__-expanded"><a name="L22"></a><tt class="py-lineno"> 22</tt> <tt class="py-line"> <tt class="py-docstring">""" </tt> </tt> 86<a name="L23"></a><tt class="py-lineno"> 23</tt> <tt class="py-line"><tt class="py-docstring"> If 'file' is a string we assume it is a path and read from </tt> </tt> 87<a name="L24"></a><tt class="py-lineno"> 24</tt> <tt class="py-line"><tt class="py-docstring"> that file. </tt> </tt> 88<a name="L25"></a><tt class="py-lineno"> 25</tt> <tt class="py-line"><tt class="py-docstring"> If it is a file descriptor we read from the file, but we don't </tt> </tt> 89<a name="L26"></a><tt class="py-lineno"> 26</tt> <tt class="py-line"><tt class="py-docstring"> close it. </tt> </tt> 90<a name="L27"></a><tt class="py-lineno"> 27</tt> <tt class="py-line"><tt class="py-docstring"> Midi files are usually pretty small, so it should be safe to </tt> </tt> 91<a name="L28"></a><tt class="py-lineno"> 28</tt> <tt class="py-line"><tt class="py-docstring"> copy them into memory. </tt> </tt> 92<a name="L29"></a><tt class="py-lineno"> 29</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt> 93<a name="L30"></a><tt class="py-lineno"> 30</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">infile</tt><tt class="py-op">:</tt> </tt> 94<a name="L31"></a><tt class="py-lineno"> 31</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">isinstance</tt><tt class="py-op">(</tt><tt class="py-name">infile</tt><tt class="py-op">,</tt> <tt class="py-name">StringType</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 95<a name="L32"></a><tt class="py-lineno"> 32</tt> <tt class="py-line"> <tt class="py-name">infile</tt> <tt class="py-op">=</tt> <tt class="py-name">open</tt><tt class="py-op">(</tt><tt class="py-name">infile</tt><tt class="py-op">,</tt> <tt class="py-string">'rb'</tt><tt class="py-op">)</tt> </tt> 96<a name="L33"></a><tt class="py-lineno"> 33</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">data</tt> <tt class="py-op">=</tt> <tt class="py-name">infile</tt><tt class="py-op">.</tt><tt id="link-4" class="py-name" targets="Method echonest.support.midi.MidiInFile.MidiInFile.read()=echonest.support.midi.MidiInFile.MidiInFile-class.html#read,Method echonest.support.midi.MidiInStream.MidiInStream.read()=echonest.support.midi.MidiInStream.MidiInStream-class.html#read"><a title="echonest.support.midi.MidiInFile.MidiInFile.read 97echonest.support.midi.MidiInStream.MidiInStream.read" class="py-name" href="#" onclick="return doclink('link-4', 'read', 'link-4');">read</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt> 98<a name="L34"></a><tt class="py-lineno"> 34</tt> <tt class="py-line"> <tt class="py-name">infile</tt><tt class="py-op">.</tt><tt id="link-5" class="py-name" targets="Method echonest.support.midi.MidiInStream.MidiInStream.close()=echonest.support.midi.MidiInStream.MidiInStream-class.html#close"><a title="echonest.support.midi.MidiInStream.MidiInStream.close" class="py-name" href="#" onclick="return doclink('link-5', 'close', 'link-5');">close</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt> 99<a name="L35"></a><tt class="py-lineno"> 35</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt> 100<a name="L36"></a><tt class="py-lineno"> 36</tt> <tt class="py-line"> <tt class="py-comment"># don't close the f</tt> </tt> 101<a name="L37"></a><tt class="py-lineno"> 37</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">data</tt> <tt class="py-op">=</tt> <tt class="py-name">infile</tt><tt class="py-op">.</tt><tt id="link-6" class="py-name"><a title="echonest.support.midi.MidiInFile.MidiInFile.read 102echonest.support.midi.MidiInStream.MidiInStream.read" class="py-name" href="#" onclick="return doclink('link-6', 'read', 'link-4');">read</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt> 103<a name="L38"></a><tt class="py-lineno"> 38</tt> <tt class="py-line"> <tt class="py-keyword">else</tt><tt class="py-op">:</tt> </tt> 104<a name="L39"></a><tt class="py-lineno"> 39</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">data</tt> <tt class="py-op">=</tt> <tt class="py-string">''</tt> </tt> 105<a name="L40"></a><tt class="py-lineno"> 40</tt> <tt class="py-line"> <tt class="py-comment"># start at beginning ;-)</tt> </tt> 106<a name="L41"></a><tt class="py-lineno"> 41</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cursor</tt> <tt class="py-op">=</tt> <tt class="py-number">0</tt> </tt> 107</div><a name="L42"></a><tt class="py-lineno"> 42</tt> <tt class="py-line"> </tt> 108<a name="L43"></a><tt class="py-lineno"> 43</tt> <tt class="py-line"> </tt> 109<a name="L44"></a><tt class="py-lineno"> 44</tt> <tt class="py-line"> <tt class="py-comment"># setting up data manually</tt> </tt> 110<a name="L45"></a><tt class="py-lineno"> 45</tt> <tt class="py-line"> </tt> 111<a name="RawInstreamFile.setData"></a><div id="RawInstreamFile.setData-def"><a name="L46"></a><tt class="py-lineno"> 46</tt> <a class="py-toggle" href="#" id="RawInstreamFile.setData-toggle" onclick="return toggle('RawInstreamFile.setData');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#setData">setData</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">data</tt><tt class="py-op">=</tt><tt class="py-string">''</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 112</div><div id="RawInstreamFile.setData-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.setData-expanded"><a name="L47"></a><tt class="py-lineno"> 47</tt> <tt class="py-line"> <tt class="py-docstring">"Sets the data from a string."</tt> </tt> 113<a name="L48"></a><tt class="py-lineno"> 48</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">data</tt> <tt class="py-op">=</tt> <tt class="py-name">data</tt> </tt> 114</div><a name="L49"></a><tt class="py-lineno"> 49</tt> <tt class="py-line"> </tt> 115<a name="L50"></a><tt class="py-lineno"> 50</tt> <tt class="py-line"> <tt class="py-comment"># cursor operations</tt> </tt> 116<a name="L51"></a><tt class="py-lineno"> 51</tt> <tt class="py-line"> </tt> 117<a name="RawInstreamFile.setCursor"></a><div id="RawInstreamFile.setCursor-def"><a name="L52"></a><tt class="py-lineno"> 52</tt> <a class="py-toggle" href="#" id="RawInstreamFile.setCursor-toggle" onclick="return toggle('RawInstreamFile.setCursor');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#setCursor">setCursor</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">position</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 118</div><div id="RawInstreamFile.setCursor-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.setCursor-expanded"><a name="L53"></a><tt class="py-lineno"> 53</tt> <tt class="py-line"> <tt class="py-docstring">"Sets the absolute position if the cursor"</tt> </tt> 119<a name="L54"></a><tt class="py-lineno"> 54</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cursor</tt> <tt class="py-op">=</tt> <tt class="py-name">position</tt> </tt> 120</div><a name="L55"></a><tt class="py-lineno"> 55</tt> <tt class="py-line"> </tt> 121<a name="L56"></a><tt class="py-lineno"> 56</tt> <tt class="py-line"> </tt> 122<a name="RawInstreamFile.getCursor"></a><div id="RawInstreamFile.getCursor-def"><a name="L57"></a><tt class="py-lineno"> 57</tt> <a class="py-toggle" href="#" id="RawInstreamFile.getCursor-toggle" onclick="return toggle('RawInstreamFile.getCursor');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#getCursor">getCursor</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 123</div><div id="RawInstreamFile.getCursor-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.getCursor-expanded"><a name="L58"></a><tt class="py-lineno"> 58</tt> <tt class="py-line"> <tt class="py-docstring">"Returns the value of the cursor"</tt> </tt> 124<a name="L59"></a><tt class="py-lineno"> 59</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cursor</tt> </tt> 125</div><a name="L60"></a><tt class="py-lineno"> 60</tt> <tt class="py-line"> </tt> 126<a name="L61"></a><tt class="py-lineno"> 61</tt> <tt class="py-line"> </tt> 127<a name="RawInstreamFile.moveCursor"></a><div id="RawInstreamFile.moveCursor-def"><a name="L62"></a><tt class="py-lineno"> 62</tt> <a class="py-toggle" href="#" id="RawInstreamFile.moveCursor-toggle" onclick="return toggle('RawInstreamFile.moveCursor');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#moveCursor">moveCursor</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">relative_position</tt><tt class="py-op">=</tt><tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 128</div><div id="RawInstreamFile.moveCursor-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.moveCursor-expanded"><a name="L63"></a><tt class="py-lineno"> 63</tt> <tt class="py-line"> <tt class="py-docstring">"Moves the cursor to a new relative position"</tt> </tt> 129<a name="L64"></a><tt class="py-lineno"> 64</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cursor</tt> <tt class="py-op">+=</tt> <tt class="py-name">relative_position</tt> </tt> 130</div><a name="L65"></a><tt class="py-lineno"> 65</tt> <tt class="py-line"> </tt> 131<a name="L66"></a><tt class="py-lineno"> 66</tt> <tt class="py-line"> <tt class="py-comment"># native data reading functions</tt> </tt> 132<a name="L67"></a><tt class="py-lineno"> 67</tt> <tt class="py-line"> </tt> 133<a name="RawInstreamFile.nextSlice"></a><div id="RawInstreamFile.nextSlice-def"><a name="L68"></a><tt class="py-lineno"> 68</tt> <a class="py-toggle" href="#" id="RawInstreamFile.nextSlice-toggle" onclick="return toggle('RawInstreamFile.nextSlice');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#nextSlice">nextSlice</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">length</tt><tt class="py-op">,</tt> <tt class="py-param">move_cursor</tt><tt class="py-op">=</tt><tt class="py-number">1</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 134</div><div id="RawInstreamFile.nextSlice-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.nextSlice-expanded"><a name="L69"></a><tt class="py-lineno"> 69</tt> <tt class="py-line"> <tt class="py-docstring">"Reads the next text slice from the raw data, with length"</tt> </tt> 135<a name="L70"></a><tt class="py-lineno"> 70</tt> <tt class="py-line"> <tt class="py-name">c</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">cursor</tt> </tt> 136<a name="L71"></a><tt class="py-lineno"> 71</tt> <tt class="py-line"> <tt class="py-name">slc</tt> <tt class="py-op">=</tt> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt class="py-name">data</tt><tt class="py-op">[</tt><tt class="py-name">c</tt><tt class="py-op">:</tt><tt class="py-name">c</tt><tt class="py-op">+</tt><tt class="py-name">length</tt><tt class="py-op">]</tt> </tt> 137<a name="L72"></a><tt class="py-lineno"> 72</tt> <tt class="py-line"> <tt class="py-keyword">if</tt> <tt class="py-name">move_cursor</tt><tt class="py-op">:</tt> </tt> 138<a name="L73"></a><tt class="py-lineno"> 73</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-7" class="py-name" targets="Method echonest.support.midi.RawInstreamFile.RawInstreamFile.moveCursor()=echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#moveCursor"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.moveCursor" class="py-name" href="#" onclick="return doclink('link-7', 'moveCursor', 'link-7');">moveCursor</a></tt><tt class="py-op">(</tt><tt class="py-name">length</tt><tt class="py-op">)</tt> </tt> 139<a name="L74"></a><tt class="py-lineno"> 74</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">slc</tt> </tt> 140</div><a name="L75"></a><tt class="py-lineno"> 75</tt> <tt class="py-line"> </tt> 141<a name="L76"></a><tt class="py-lineno"> 76</tt> <tt class="py-line"> </tt> 142<a name="RawInstreamFile.readBew"></a><div id="RawInstreamFile.readBew-def"><a name="L77"></a><tt class="py-lineno"> 77</tt> <a class="py-toggle" href="#" id="RawInstreamFile.readBew-toggle" onclick="return toggle('RawInstreamFile.readBew');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#readBew">readBew</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">,</tt> <tt class="py-param">n_bytes</tt><tt class="py-op">=</tt><tt class="py-number">1</tt><tt class="py-op">,</tt> <tt class="py-param">move_cursor</tt><tt class="py-op">=</tt><tt class="py-number">1</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 143</div><div id="RawInstreamFile.readBew-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.readBew-expanded"><a name="L78"></a><tt class="py-lineno"> 78</tt> <tt class="py-line"> <tt class="py-docstring">""" </tt> </tt> 144<a name="L79"></a><tt class="py-lineno"> 79</tt> <tt class="py-line"><tt class="py-docstring"> Reads n bytes of date from the current cursor position. </tt> </tt> 145<a name="L80"></a><tt class="py-lineno"> 80</tt> <tt class="py-line"><tt class="py-docstring"> Moves cursor if move_cursor is true </tt> </tt> 146<a name="L81"></a><tt class="py-lineno"> 81</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt> 147<a name="L82"></a><tt class="py-lineno"> 82</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt id="link-8" class="py-name"><a title="echonest.support.midi.DataTypeConverters.readBew 148echonest.support.midi.RawInstreamFile.RawInstreamFile.readBew" class="py-name" href="#" onclick="return doclink('link-8', 'readBew', 'link-1');">readBew</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-9" class="py-name" targets="Method echonest.support.midi.RawInstreamFile.RawInstreamFile.nextSlice()=echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#nextSlice"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.nextSlice" class="py-name" href="#" onclick="return doclink('link-9', 'nextSlice', 'link-9');">nextSlice</a></tt><tt class="py-op">(</tt><tt class="py-name">n_bytes</tt><tt class="py-op">,</tt> <tt class="py-name">move_cursor</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt> 149</div><a name="L83"></a><tt class="py-lineno"> 83</tt> <tt class="py-line"> </tt> 150<a name="L84"></a><tt class="py-lineno"> 84</tt> <tt class="py-line"> </tt> 151<a name="RawInstreamFile.readVarLen"></a><div id="RawInstreamFile.readVarLen-def"><a name="L85"></a><tt class="py-lineno"> 85</tt> <a class="py-toggle" href="#" id="RawInstreamFile.readVarLen-toggle" onclick="return toggle('RawInstreamFile.readVarLen');">-</a><tt class="py-line"> <tt class="py-keyword">def</tt> <a class="py-def-name" href="echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html#readVarLen">readVarLen</a><tt class="py-op">(</tt><tt class="py-param">self</tt><tt class="py-op">)</tt><tt class="py-op">:</tt> </tt> 152</div><div id="RawInstreamFile.readVarLen-collapsed" style="display:none;" pad="+++" indent="++++++++"></div><div id="RawInstreamFile.readVarLen-expanded"><a name="L86"></a><tt class="py-lineno"> 86</tt> <tt class="py-line"> <tt class="py-docstring">""" </tt> </tt> 153<a name="L87"></a><tt class="py-lineno"> 87</tt> <tt class="py-line"><tt class="py-docstring"> Reads a variable length value from the current cursor position. </tt> </tt> 154<a name="L88"></a><tt class="py-lineno"> 88</tt> <tt class="py-line"><tt class="py-docstring"> Moves cursor if move_cursor is true </tt> </tt> 155<a name="L89"></a><tt class="py-lineno"> 89</tt> <tt class="py-line"><tt class="py-docstring"> """</tt> </tt> 156<a name="L90"></a><tt class="py-lineno"> 90</tt> <tt class="py-line"> <tt class="py-name">MAX_VARLEN</tt> <tt class="py-op">=</tt> <tt class="py-number">4</tt> <tt class="py-comment"># Max value varlen can be</tt> </tt> 157<a name="L91"></a><tt class="py-lineno"> 91</tt> <tt class="py-line"> <tt class="py-name">var</tt> <tt class="py-op">=</tt> <tt id="link-10" class="py-name"><a title="echonest.support.midi.DataTypeConverters.readVar" class="py-name" href="#" onclick="return doclink('link-10', 'readVar', 'link-2');">readVar</a></tt><tt class="py-op">(</tt><tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-11" class="py-name"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.nextSlice" class="py-name" href="#" onclick="return doclink('link-11', 'nextSlice', 'link-9');">nextSlice</a></tt><tt class="py-op">(</tt><tt class="py-name">MAX_VARLEN</tt><tt class="py-op">,</tt> <tt class="py-number">0</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt> 158<a name="L92"></a><tt class="py-lineno"> 92</tt> <tt class="py-line"> <tt class="py-comment"># only move cursor the actual bytes in varlen</tt> </tt> 159<a name="L93"></a><tt class="py-lineno"> 93</tt> <tt class="py-line"> <tt class="py-name">self</tt><tt class="py-op">.</tt><tt id="link-12" class="py-name"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.moveCursor" class="py-name" href="#" onclick="return doclink('link-12', 'moveCursor', 'link-7');">moveCursor</a></tt><tt class="py-op">(</tt><tt id="link-13" class="py-name"><a title="echonest.support.midi.DataTypeConverters.varLen" class="py-name" href="#" onclick="return doclink('link-13', 'varLen', 'link-3');">varLen</a></tt><tt class="py-op">(</tt><tt class="py-name">var</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt> 160<a name="L94"></a><tt class="py-lineno"> 94</tt> <tt class="py-line"> <tt class="py-keyword">return</tt> <tt class="py-name">var</tt> </tt> 161</div></div><a name="L95"></a><tt class="py-lineno"> 95</tt> <tt class="py-line"> </tt> 162<a name="L96"></a><tt class="py-lineno"> 96</tt> <tt class="py-line"> </tt> 163<a name="L97"></a><tt class="py-lineno"> 97</tt> <tt class="py-line"> </tt> 164<a name="L98"></a><tt class="py-lineno"> 98</tt> <tt class="py-line"><tt class="py-keyword">if</tt> <tt class="py-name">__name__</tt> <tt class="py-op">==</tt> <tt class="py-string">'__main__'</tt><tt class="py-op">:</tt> </tt> 165<a name="L99"></a><tt class="py-lineno"> 99</tt> <tt class="py-line"> </tt> 166<a name="L100"></a><tt class="py-lineno">100</tt> <tt class="py-line"> <tt id="link-14" class="py-name" targets="Variable echonest.support.midi.example_print_file.test_file=echonest.support.midi.example_print_file-module.html#test_file"><a title="echonest.support.midi.example_print_file.test_file" class="py-name" href="#" onclick="return doclink('link-14', 'test_file', 'link-14');">test_file</a></tt> <tt class="py-op">=</tt> <tt class="py-string">'test/midifiles/minimal.mid'</tt> </tt> 167<a name="L101"></a><tt class="py-lineno">101</tt> <tt class="py-line"> <tt class="py-name">fis</tt> <tt class="py-op">=</tt> <tt id="link-15" class="py-name" targets="Module echonest.support.midi.RawInstreamFile=echonest.support.midi.RawInstreamFile-module.html,Class echonest.support.midi.RawInstreamFile.RawInstreamFile=echonest.support.midi.RawInstreamFile.RawInstreamFile-class.html"><a title="echonest.support.midi.RawInstreamFile 168echonest.support.midi.RawInstreamFile.RawInstreamFile" class="py-name" href="#" onclick="return doclink('link-15', 'RawInstreamFile', 'link-15');">RawInstreamFile</a></tt><tt class="py-op">(</tt><tt id="link-16" class="py-name"><a title="echonest.support.midi.example_print_file.test_file" class="py-name" href="#" onclick="return doclink('link-16', 'test_file', 'link-14');">test_file</a></tt><tt class="py-op">)</tt> </tt> 169<a name="L102"></a><tt class="py-lineno">102</tt> <tt class="py-line"> <tt class="py-keyword">print</tt> <tt class="py-name">fis</tt><tt class="py-op">.</tt><tt id="link-17" class="py-name"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.nextSlice" class="py-name" href="#" onclick="return doclink('link-17', 'nextSlice', 'link-9');">nextSlice</a></tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">fis</tt><tt class="py-op">.</tt><tt class="py-name">data</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt> 170<a name="L103"></a><tt class="py-lineno">103</tt> <tt class="py-line"> </tt> 171<a name="L104"></a><tt class="py-lineno">104</tt> <tt class="py-line"> <tt id="link-18" class="py-name"><a title="echonest.support.midi.example_print_file.test_file" class="py-name" href="#" onclick="return doclink('link-18', 'test_file', 'link-14');">test_file</a></tt> <tt class="py-op">=</tt> <tt class="py-string">'test/midifiles/cubase-minimal.mid'</tt> </tt> 172<a name="L105"></a><tt class="py-lineno">105</tt> <tt class="py-line"> <tt class="py-name">cubase_minimal</tt> <tt class="py-op">=</tt> <tt class="py-name">open</tt><tt class="py-op">(</tt><tt id="link-19" class="py-name"><a title="echonest.support.midi.example_print_file.test_file" class="py-name" href="#" onclick="return doclink('link-19', 'test_file', 'link-14');">test_file</a></tt><tt class="py-op">,</tt> <tt class="py-string">'rb'</tt><tt class="py-op">)</tt> </tt> 173<a name="L106"></a><tt class="py-lineno">106</tt> <tt class="py-line"> <tt class="py-name">fis2</tt> <tt class="py-op">=</tt> <tt id="link-20" class="py-name"><a title="echonest.support.midi.RawInstreamFile 174echonest.support.midi.RawInstreamFile.RawInstreamFile" class="py-name" href="#" onclick="return doclink('link-20', 'RawInstreamFile', 'link-15');">RawInstreamFile</a></tt><tt class="py-op">(</tt><tt class="py-name">cubase_minimal</tt><tt class="py-op">)</tt> </tt> 175<a name="L107"></a><tt class="py-lineno">107</tt> <tt class="py-line"> <tt class="py-keyword">print</tt> <tt class="py-name">fis2</tt><tt class="py-op">.</tt><tt id="link-21" class="py-name"><a title="echonest.support.midi.RawInstreamFile.RawInstreamFile.nextSlice" class="py-name" href="#" onclick="return doclink('link-21', 'nextSlice', 'link-9');">nextSlice</a></tt><tt class="py-op">(</tt><tt class="py-name">len</tt><tt class="py-op">(</tt><tt class="py-name">fis2</tt><tt class="py-op">.</tt><tt class="py-name">data</tt><tt class="py-op">)</tt><tt class="py-op">)</tt> </tt> 176<a name="L108"></a><tt class="py-lineno">108</tt> <tt class="py-line"> <tt class="py-name">cubase_minimal</tt><tt class="py-op">.</tt><tt id="link-22" class="py-name"><a title="echonest.support.midi.MidiInStream.MidiInStream.close" class="py-name" href="#" onclick="return doclink('link-22', 'close', 'link-5');">close</a></tt><tt class="py-op">(</tt><tt class="py-op">)</tt> </tt> 177<a name="L109"></a><tt class="py-lineno">109</tt> <tt class="py-line"> </tt><script type="text/javascript"> 178<!-- 179expandto(location.href); 180// --> 181</script> 182</pre> 183<br /> 184<!-- ==================== NAVIGATION BAR ==================== --> 185<table class="navbar" border="0" width="100%" cellpadding="0" 186 bgcolor="#a0c0ff" cellspacing="0"> 187 <tr valign="middle"> 188 189 <!-- Tree link --> 190 <th> <a 191 href="module-tree.html">Trees</a> </th> 192 193 <!-- Index link --> 194 <th> <a 195 href="identifier-index.html">Indices</a> </th> 196 197 <!-- Help link --> 198 <th> <a 199 href="help.html">Help</a> </th> 200 201 <!-- Project homepage --> 202 <th class="navbar" 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So hide 226 // them unless we have a cookie that says to show them. 227 checkCookie(); 228 // --> 229</script> 230</body> 231</html>