Class: Appydave::Tools::SubtitleProcessor::Join::SRTMerger

Inherits:
Object
  • Object
show all
Defined in:
lib/appydave/tools/subtitle_processor/join.rb

Overview

Merges multiple subtitle arrays while maintaining timing and adding buffers

Instance Method Summary collapse

Constructor Details

#initialize(buffer_ms: 100) ⇒ SRTMerger

Returns a new instance of SRTMerger.



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# File 'lib/appydave/tools/subtitle_processor/join.rb', line 139

def initialize(buffer_ms: 100)
  @buffer_ms = buffer_ms.to_f
end

Instance Method Details

#merge(subtitle_arrays) ⇒ Object 



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# File 'lib/appydave/tools/subtitle_processor/join.rb', line 143

def merge(subtitle_arrays)
  return [] if subtitle_arrays.empty?

  merged = []
  current_end_time = 0.0

  subtitle_arrays.each do |subtitles|
    next if subtitles.empty?

    # Calculate offset needed for this batch of subtitles
    first_subtitle = subtitles.first
    offset_seconds = calculate_offset(current_end_time, first_subtitle.start_time)

    # Add adjusted subtitles to merged array
    subtitles.each do |subtitle|
      adjusted_subtitle = adjust_subtitle_timing(subtitle, offset_seconds)
      merged << adjusted_subtitle
    end

    # Update current_end_time for next batch
    current_end_time = merged.last.end_time
  end

  # Renumber subtitles sequentially
  merged.each_with_index do |subtitle, index|
    subtitle.instance_variable_set(:@index, index + 1)
  end

  merged
end