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114 lines
3.7 KiB
Python
114 lines
3.7 KiB
Python
class CmxEvent:
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"""Represents a source-record event.
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Aside from exposing properites related to the raw CMX event itself,
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(the `source_start`, `source_finish`, `transition` etc.) the event
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also contains contextual information from the parsed CMX list, such as
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`clip_name` and the frame counting mode in effect on the event.
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"""
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def __init__(self,title,number,clip_name,source_name,channels,
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transition,source_start,source_finish,
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record_start, record_finish, fcm_drop, remarks = [] ,
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unrecognized = []):
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self.title = title
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self.number = number
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self.clip_name = clip_name
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self.source_name = source_name
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self.channels = channels
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self.transition = transition
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self.source_start = source_start
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self.source_finish = source_finish
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self.record_start = record_start
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self.record_finish = record_finish
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self.fcm_drop = fcm_drop
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self.remarks = remarks
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self.unrecgonized = unrecognized
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self.black = (source_name == 'BL')
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self.aux_source = (source_name == 'AX')
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def accept_statement(self, statement):
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"""Used by the parser to attach clip names and notes to this event."""
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statement_type = type(statement).__name__
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if statement_type == 'AudioExt':
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self.channels.appendExt(statement)
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elif statement_type == 'Remark':
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self.remarks.append(statement.text)
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elif statement_type == 'SourceFile':
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self.source_name = statement.filename
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elif statement_type == 'ClipName':
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self.clip_name = statement.name
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elif statement_type == 'EffectsName':
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self.transition.name = statement.name
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def __repr__(self):
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return f"""CmxEvent(title="{self.title}",number={self.number},\
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clip_name="{self.clip_name}",source_name="{self.source_name}",\
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channels={self.channels},transition={self.transition},\
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source_start="{self.source_start}",source_finish="{self.source_finish}",\
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record_start="{self.source_start}",record_finish="{self.record_finish}",\
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fcm_drop={self.fcm_drop},remarks={self.remarks})"""
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class CmxTransition:
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"""Represents a CMX transition, a wipe, dissolve or cut."""
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def __init__(self, transition, operand):
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self.transition = transition
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self.operand = operand
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self.name = ''
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@property
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def cut(self):
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"`True` if this transition is a cut."
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return self.transition == 'C'
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@property
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def dissolve(self):
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"`True` if this traansition is a dissolve."
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return self.transition == 'D'
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@property
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def wipe(self):
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"`True` if this transition is a wipe."
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return self.transition.startswith('W')
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@property
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def effect_duration(self):
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""""`The duration of this transition, in frames of the record target.
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In the event of a key event, this is the duration of the fade in.
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"""
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return int(self.operand)
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@property
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def wipe_number(self):
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"Wipes are identified by a particular number."
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if self.wipe:
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return int(self.transition[1:])
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else:
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return None
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@property
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def key_background(self):
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"`True` if this is a key background event."
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return self.transition == 'KB'
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@property
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def key_foreground(self):
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"`True` if this is a key foreground event."
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return self.transition == 'K'
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@property
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def key_out(self):
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"`True` if this is a key out event."
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return self.transition == 'KO'
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def __repr__(self):
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return f"""CmxTransition(transition="{self.transition}",operand="{self.operand}")"""
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