Source Code for Module echonest.remix.support.midi.MidiInFile

 1  # -*- coding: ISO-8859-1 -*-
 
 2  
 
 3  from RawInstreamFile import RawInstreamFile 
 4  from MidiFileParser import MidiFileParser 
 5  
 
 6  
 
 7 -class MidiInFile: 
 8  
 
 9      """
 
10      
 
11      Parses a midi file, and triggers the midi events on the outStream 
 
12      object.
 
13      
 
14      Get example data from a minimal midi file, generated with cubase.
 
15      >>> test_file = 'C:/Documents and Settings/maxm/Desktop/temp/midi/src/midi/tests/midifiles/minimal-cubase-type0.mid'
 
16      
 
17      Do parsing, and generate events with MidiToText,
 
18      so we can see what a minimal midi file contains
 
19      >>> from MidiToText import MidiToText
 
20      >>> midi_in = MidiInFile(MidiToText(), test_file)
 
21      >>> midi_in.read()
 
22      format: 0, nTracks: 1, division: 480
 
23      ----------------------------------
 
24      <BLANKLINE>
 
25      Start - track #0
 
26      sequence_name: Type 0
 
27      tempo: 500000
 
28      time_signature: 4 2 24 8
 
29      note_on  - ch:00,  note:48,  vel:64 time:0
 
30      note_off - ch:00,  note:48,  vel:40 time:480
 
31      End of track
 
32      <BLANKLINE>
 
33      End of file
 
34      
 
35      
 
36      """ 
37  
 
38 -    def __init__(self, outStream, infile): 
39          # these could also have been mixins, would that be better? Nah!
 
40          self.raw_in = RawInstreamFile(infile) 
41          self.parser = MidiFileParser(self.raw_in, outStream) 
42  
 
43  
 
44 -    def read(self): 
45          "Start parsing the file" 
46          p = self.parser 
47          p.parseMThdChunk() 
48          p.parseMTrkChunks() 
49  
 
50  
 
51 -    def setData(self, data=''): 
52          "Sets the data from a plain string" 
53          self.raw_in.setData(data) 
54