Files
test/sexp_effects/effects/ascii_art.sexp
gilesb d241e2a663 Add streaming video compositor with sexp interpreter
- New streaming/ module for real-time video processing:
  - compositor.py: Main streaming compositor with cycle-crossfade
  - sexp_executor.py: Executes compiled sexp recipes in real-time
  - sexp_interp.py: Full S-expression interpreter for SLICE_ON Lambda
  - recipe_adapter.py: Bridges recipes to streaming compositor
  - sources.py: Video source with ffmpeg streaming
  - audio.py: Real-time audio analysis (energy, beats)
  - output.py: Preview (mpv) and file output with audio muxing

- New templates/:
  - cycle-crossfade.sexp: Smooth zoom-based video cycling
  - process-pair.sexp: Dual-clip processing with effects

- Key features:
  - Videos cycle in input-videos order (not definition order)
  - Cumulative whole-spin rotation
  - Zero-weight sources skip processing
  - Live audio-reactive effects

- New effects: blend_multi for weighted layer compositing
- Updated primitives and interpreter for streaming compatibility

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
2026-01-29 01:27:39 +00:00

18 lines
840 B
Common Lisp

;; ASCII Art effect - converts image to ASCII characters
(require-primitives "ascii")
(define-effect ascii_art
:params (
(char_size :type int :default 8 :range [4 32])
(alphabet :type string :default "standard")
(color_mode :type string :default "color" :desc ""color", "mono", "invert", or any color name/hex")
(background_color :type string :default "black" :desc "background color name/hex")
(invert_colors :type int :default 0 :desc "swap foreground and background colors")
(contrast :type float :default 1.5 :range [1 3])
)
(let* ((sample (cell-sample frame char_size))
(colors (nth sample 0))
(luminances (nth sample 1))
(chars (luminance-to-chars luminances alphabet contrast)))
(render-char-grid frame chars colors char_size color_mode background_color invert_colors)))