406cc7c0c7
Add S-expression based video effects pipeline with modular effect definitions, constructs, and recipe files. Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
63 lines
1.4 KiB
Python
63 lines
1.4 KiB
Python
# /// script
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# requires-python = ">=3.10"
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# dependencies = ["numpy"]
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# ///
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"""
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@effect invert
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@version 1.0.0
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@author artdag
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@description
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Inverts the colors of each frame. Can be partial (blended with original)
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based on intensity parameter. Useful for beat-reactive flashing effects.
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@param intensity float
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@range 0 100
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@default 100
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Intensity of the inversion effect (0 = original, 100 = fully inverted).
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Bind to audio analysis for reactive effects.
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@example
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(effect invert)
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@example
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(effect invert :intensity 50)
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@example
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;; Beat-reactive inversion
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(effect invert :intensity (bind bass :range [0 100] :transform sqrt))
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"""
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import numpy as np
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def process_frame(frame: np.ndarray, params: dict, state: dict) -> tuple:
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"""
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Invert colors of a video frame.
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Args:
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frame: Input frame as numpy array (H, W, 3) RGB uint8
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params: Effect parameters
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- intensity: 0-100, how much to invert (default 100)
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state: Persistent state dict (unused for this effect)
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Returns:
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Tuple of (processed_frame, new_state)
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"""
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intensity = params.get("intensity", 100)
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# Normalize intensity to 0-1
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t = intensity / 100.0
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if t <= 0:
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return frame, state
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if t >= 1:
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return (255 - frame), state
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# Partial inversion: blend between original and inverted
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inverted = 255 - frame
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result = (frame * (1 - t) + inverted * t).astype(np.uint8)
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return result, state
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