75 lines
3.7 KiB
Python
75 lines
3.7 KiB
Python
# Copyright (C) 2023 by Artem Khrapov (kabachuha)
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# Read LICENSE for usage terms.
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import re
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import numpy as np
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import numexpr
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import pandas as pd
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class T2VAnimKeys():
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def __init__(self, anim_args, seed=-1, max_i_frames=1):
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self.fi = FrameInterpolater(anim_args.max_frames, seed, max_i_frames)
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self.inpainting_weights_series = self.fi.get_inbetweens(self.fi.parse_key_frames(anim_args.inpainting_weights))
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def check_is_number(value):
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float_pattern = r'^(?=.)([+-]?([0-9]*)(\.([0-9]+))?)$'
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return re.match(float_pattern, value)
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class FrameInterpolater():
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def __init__(self, max_frames=0, seed=-1, max_i_frames=1) -> None:
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self.max_frames = max_frames
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self.seed = seed
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self.max_i_frames = max_i_frames
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def sanitize_value(self, value):
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return value.replace("'","").replace('"',"").replace('(',"").replace(')',"")
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def get_inbetweens(self, key_frames, integer=False, interp_method='Linear', is_single_string = False):
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key_frame_series = pd.Series([np.nan for a in range(self.max_frames)])
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# get our ui variables set for numexpr.evaluate
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max_f = self.max_frames -1
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max_i_f = self.max_i_frames - 1
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s = self.seed
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for i in range(0, self.max_frames):
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if i in key_frames:
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value = key_frames[i]
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value_is_number = check_is_number(self.sanitize_value(value))
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if value_is_number: # if it's only a number, leave the rest for the default interpolation
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key_frame_series[i] = self.sanitize_value(value)
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if not value_is_number:
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t = i
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# workaround for values formatted like 0:("I am test") //used for sampler schedules
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key_frame_series[i] = numexpr.evaluate(value) if not is_single_string else self.sanitize_value(value)
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elif is_single_string:# take previous string value and replicate it
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key_frame_series[i] = key_frame_series[i-1]
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key_frame_series = key_frame_series.astype(float) if not is_single_string else key_frame_series # as string
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if interp_method == 'Cubic' and len(key_frames.items()) <= 3:
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interp_method = 'Quadratic'
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if interp_method == 'Quadratic' and len(key_frames.items()) <= 2:
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interp_method = 'Linear'
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key_frame_series[0] = key_frame_series[key_frame_series.first_valid_index()]
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key_frame_series[self.max_frames-1] = key_frame_series[key_frame_series.last_valid_index()]
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key_frame_series = key_frame_series.interpolate(method=interp_method.lower(), limit_direction='both')
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if integer:
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return key_frame_series.astype(int)
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return key_frame_series
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def parse_key_frames(self, string):
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# because math functions (i.e. sin(t)) can utilize brackets
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# it extracts the value in form of some stuff
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# which has previously been enclosed with brackets and
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# with a comma or end of line existing after the closing one
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frames = dict()
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for match_object in string.split(","):
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frameParam = match_object.split(":")
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max_f = self.max_frames - 1
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max_i_f = self.max_i_frames - 1
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s = self.seed
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frame = int(self.sanitize_value(frameParam[0])) if check_is_number(self.sanitize_value(frameParam[0].strip())) else int(numexpr.evaluate(frameParam[0].strip().replace("'","",1).replace('"',"",1)[::-1].replace("'","",1).replace('"',"",1)[::-1]))
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frames[frame] = frameParam[1].strip()
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if frames == {} and len(string) != 0:
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raise RuntimeError('Key Frame string not correctly formatted')
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return frames
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