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99 lines
2.6 KiB
Python
99 lines
2.6 KiB
Python
# pycmx
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# (c) 2018 Jamie Hardt
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from re import (compile, match)
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class ChannelMap:
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"""
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Represents a set of all the channels to which an event applies.
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"""
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_chan_map = { "V" : (True, False, False),
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"A" : (False, True, False),
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"A2" : (False, False, True),
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"AA" : (False, True, True),
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"B" : (True, True, False),
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"AA/V" : (True, True, True),
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"A2/V" : (True, False, True)
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}
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def __init__(self, v=False, audio_channels=set()):
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self._audio_channel_set = audio_channels
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self.v = v
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@property
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def video(self):
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'True if video is included'
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return self.v
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@property
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def channels(self):
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'A generator for each audio channel'
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for c in self._audio_channel_set:
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yield c
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@property
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def a1(self):
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"""True if A1 is included."""
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return self.get_audio_channel(1)
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@a1.setter
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def a1(self,val):
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self.set_audio_channel(1,val)
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@property
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def a2(self):
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"""True if A2 is included."""
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return self.get_audio_channel(2)
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@a2.setter
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def a2(self,val):
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self.set_audio_channel(2,val)
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@property
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def a3(self):
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"""True if A3 is included."""
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return self.get_audio_channel(3)
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@a3.setter
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def a3(self,val):
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self.set_audio_channel(3,val)
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@property
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def a4(self):
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"""True if A4 is included."""
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return self.get_audio_channel(4)
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@a4.setter
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def a4(self,val):
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self.set_audio_channel(4,val)
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def get_audio_channel(self,chan_num):
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"""True if chan_num is included."""
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return (chan_num in self._audio_channel_set)
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def set_audio_channel(self,chan_num,enabled):
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"""If enabled is true, chan_num will be included."""
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if enabled:
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self._audio_channel_set.add(chan_num)
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elif self.get_audio_channel(chan_num):
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self._audio_channel_set.remove(chan_num)
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def _append_event(self, event_str):
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alt_channel_re = compile('^A(\d+)')
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if event_str in self._chan_map:
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channels = self._chan_map[event_str]
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self.v = channels[0]
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self.a1 = channels[1]
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self.a2 = channels[2]
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else:
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matchresult = match(alt_channel_re, event_str)
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if matchresult:
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self.set_audio_channel(int( matchresult.group(1)), True )
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def _append_sxt(self, audio_ext):
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self.a3 = ext.audio3
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self.a4 = ext.audio4
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