class Opal::Asciicast::PlaybackEngine

• Opal::Asciicast::PlaybackEngine
• Reference
• Object

Overview

Playback and inspection engine for Asciinema v2 recordings. Reconstructs terminal screens into UI::Buffer frames, supports frame-by-frame stepping, seeking, speed multipliers, and overlay-respecting compositing.

Defined in:

opal/asciicast/playback_engine.cr

Constructors

• .from_file(path : String) : self

  Factory constructor from file path

• .from_string(content : String) : self

  Factory constructor from raw asciicast string

• .new(recording : Reader::Recording)

Instance Method Summary

• #add_overlay(element : UI::Element, x : Int32, y : Int32, width : Int32, height : Int32) : self

  Attaches a persistent overlay element to be composited over playback

• #clear_overlays : self

  Clears all persistent overlays

• #current_buffer : UI::Buffer

  Returns the current visual buffer

• #current_frame : PlaybackFrame

  Returns the current frame or a blank buffer if no frames exist

• #current_index : Int32
• #current_timestamp : Float64

  Returns the current timestamp in seconds

• #duration : Float64
• #empty? : Bool
• #frames : Array(PlaybackFrame)
• #goto_frame(index : Int32) : PlaybackFrame

  Seeks directly to a frame index

• #has_next? : Bool
• #has_prev? : Bool
• #height : Int32
• #looping=(looping : Bool)
• #looping? : Bool
• #next_frame : PlaybackFrame

  Advances to the next frame

• #pause : self
• #paused? : Bool
• #play(speed : Float64 = 1.0, loop : Bool = false, &block : UI::Buffer, Int32 -> Nil) : Nil

  Automated playback loop yielding each frame buffer and frame index

• #playing? : Bool
• #prev_frame : PlaybackFrame

  Steps back to the previous frame

• #recording : Reader::Recording
• #render_frame(target : UI::Buffer, x : Int32 = 0, y : Int32 = 0, respect_overlays : Bool = false) : Nil

  Composites the current playback frame into the target buffer.

• #resume : self
• #rewind : PlaybackFrame

  Rewinds playback to frame 0

• #seek(timestamp_seconds : Float64) : PlaybackFrame

  Seeks to the frame closest to the specified timestamp in seconds

• #speed : Float64
• #speed=(speed : Float64)
• #stop : self
• #total_frames : Int32
• #width : Int32

Constructor Detail

Instance Method Detail