Class: MKV::Movie

Inherits:
Object
  • Object
show all
Defined in:
lib/mkv/movie.rb

Constant Summary collapse

@@timeout = 
200

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(path) ⇒ Movie

Returns a new instance of Movie.

Raises:

  • (Errno::ENOENT) 


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# File 'lib/mkv/movie.rb', line 10

def initialize(path)
  raise Errno::ENOENT, "the file '#{path}' does not exist" unless File.exists?(path)

  @path = path

  # mkvinfo will output to stdout
  command = "#{MKV.mkvinfo_binary} #{Shellwords.escape(path)}"
  MKV.logger.info(command)
  output = Open3.popen3(command) { |stdin, stdout, stderr| stdout.read}

  match = output.gsub(/\n/, '$$').match /\|\+\ssegment tracks(.*?)\|\+\s(?:chapters|cluster)/i
  tracks = match[1].gsub(/\$\$/, "\n")
  match_tracks = tracks.gsub(/\n/, '$$').scan(/a track(.*?)(?:\|\s\+|$)/i)
  match_tracks = match_tracks.map { |x| x.first.gsub(/\$\$/, "\n") }

  @tracks = match_tracks.map do |track_data|
    MKV::Track.new track_data
  end

  @invalid = true if @tracks.any?
  @invalid = true if output.include?("is not supported")
  @invalid = true if output.include?("could not find codec parameters")
end

Instance Attribute Details

#path ⇒ Object (readonly)

Returns the value of attribute path.



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# File 'lib/mkv/movie.rb', line 7

def path
  @path
end

#tracks ⇒ Object (readonly)

Returns the value of attribute tracks.



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# File 'lib/mkv/movie.rb', line 8

def tracks
  @tracks
end

Instance Method Details

#extract_subtitles(destination_dir) ⇒ Object 



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# File 'lib/mkv/movie.rb', line 42

def extract_subtitles(destination_dir)
  tracks.select { |t| t.type == 'subtitles' }.each do |track|
    destination_filename = File.basename(@path).gsub(/\.mkv$/i, %Q[.#{track.language}.srt])
    command = %Q[#{MKV.mkvextract_binary} tracks "#{@path}" #{track.mkv_info_id}:"#{File.join(destination_dir, destination_filename)}"]

    MKV.logger.debug "Executing command: #{command}"

    output = ""
    Open3.popen3(command) do |stdin, stdout, stderr, wait_thr|
      begin
        yield(0.0) if block_given?
        next_line = Proc.new do |line|
          output << line
          if line =~ /(\d+)%/
            progress = $1.to_i

            yield(progress) if block_given?
          end

          if line =~ /Unsupported codec/
            MKV.logger.error "Failed encoding...\nCommand\n#{command}\nOutput\n#{output}\n"
            raise "Failed encoding: #{line}"
          end
        end

        if @@timeout
          stdout.each_with_timeout(wait_thr.pid, @@timeout, "r", &next_line)
        else
          stdout.each("r", &next_line)
        end

      rescue Timeout::Error => e
        MKV.logger.error "Process hung...\nCommand\n#{command}\nOutput\n#{output}\n"
        raise MKV::Error, "Process hung. Full output: #{output}"
      end
    end
  end
end

#has_audio? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mkv/movie.rb', line 40

def has_audio? ; tracks.select { |t| t.type == 'audio' }.any? ; end

#has_subtitles? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mkv/movie.rb', line 38

def has_subtitles? ; tracks.select { |t| t.type == 'subtitles' }.any? ; end

#has_video? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mkv/movie.rb', line 39

def has_video? ; tracks.select { |t| t.type == 'video' }.any? ; end

#valid? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/mkv/movie.rb', line 34

def valid?
  not @invalid
end