;; ASCII zones effect - region-based ASCII rendering
;; Usage: python3 plan.py effects/ascii_zones.sexp -p char_size=10 | python3 execute.py - -d . -o output.mp4
;;
;; Parameters:
;;   char_size: character cell size in pixels (4 to 20, default: 10)

(recipe "ascii_zones"
  :version "1.0"
  :encoding (:codec "libx264" :crf 20 :preset "medium" :audio-codec "aac" :fps 30)

  (effect ascii_zones :path "sexp_effects/effects/ascii_zones.sexp")
  (analyzer energy :path "../artdag-analyzers/energy/analyzer.py")


  ;; Default parameter (overridden by -p char_size=N)
  (def char_size 10)

  (def video (source :path "monday.webm"))
  (def clip (-> video (segment :start 0 :duration 10)))
  (def audio (source :path "dizzy.mp3"))
  (def audio-clip (-> audio (segment :start 60 :duration 10)))

  ;; Analyze just the audio clip - times are 0-10s relative to clip
  (def energy-data (-> audio-clip (analyze energy)))



  ;; char_size bound to energy - no offset needed since analysis is on clip
  (def result (-> clip
    (effect ascii_zones
      :char_size (bind energy-data values :range [2 32]))))

  (mux result audio-clip))