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76 lines
2.3 KiB
Python
76 lines
2.3 KiB
Python
15 years ago
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class EventDispatcherBase:
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def __init__(self, outstream):
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"""
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The event dispatcher generates events on the outstream. This
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is the base implementation. It is more like an interface for
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how the EventDispatcher. It has the methods that are used by
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the Midi Parser.
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"""
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# internal values, don't mess with 'em directly
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self.outstream = outstream
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def eof(self):
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"End of file!"
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self.outstream.eof()
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def update_time(self, new_time=0, relative=1):
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"Updates relative/absolute time."
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self.outstream.update_time(new_time, relative)
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# 'official' midi events
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def header(self, format, nTracks, division):
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"Triggers the header event"
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self.outstream.header(format, nTracks, division)
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def start_of_track(self, current_track):
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"Triggers the start of track event"
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# I do this twice so that users can overwrite the
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# start_of_track event handler without worrying whether the
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# track number is updated correctly.
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self.outstream.set_current_track(current_track)
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self.outstream.start_of_track(current_track)
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# Event dispatchers for midi events
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def channel_messages(self, hi_nible, channel, data):
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"Dispatches channel messages"
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self.outstream.channel_message(hi_nible, channel, data)
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def continuous_controllers(self, channel, controller, value):
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"Dispatches channel messages"
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self.outstream.continuous_controller(channel, controller, value)
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def system_commons(self, common_type, common_data):
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"Dispatches system common messages"
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self.outstream.system_common(common_type, common_data)
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def meta_event(self, meta_type, data):
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"Dispatches meta events"
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self.outstream.meta_event(meta_type, data)
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def sysex_events(self, data):
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"Dispatcher for sysex events"
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self.outstream.sysex_event(data)
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if __name__ == '__main__':
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from MidiToText import MidiToText
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from constants import NOTE_ON
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outstream = MidiToText()
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dispatcher = EventDispatcherBase(outstream)
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dispatcher.channel_messages(NOTE_ON, 0x00, '\x40\x40')
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