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>
53 lines
1.3 KiB
Python
53 lines
1.3 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 brightness
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@version 1.0.0
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@author artdag
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@description
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Adjusts the brightness of each frame by multiplying pixel values.
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Values > 1.0 brighten, < 1.0 darken. Useful for pulse effects synced to music.
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@param factor float
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@range 0 3
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@default 1.0
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Brightness multiplier. 0 = black, 1 = unchanged, 2 = double brightness.
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Bind to bass/energy for reactive brightness pulses.
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@example
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(effect brightness :factor 1.5)
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@example
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;; Pulse brighter on bass hits
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(effect brightness :factor (bind bass :range [1.0 2.0] :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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Adjust brightness 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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- factor: brightness multiplier (default 1.0)
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state: Persistent state dict (unused)
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Returns:
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Tuple of (processed_frame, new_state)
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"""
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factor = params.get("factor", 1.0)
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if factor == 1.0:
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return frame, state
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# Apply brightness multiplier with clipping
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result = np.clip(frame.astype(np.float32) * factor, 0, 255).astype(np.uint8)
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return result, state
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