Class: TranscodingMachine::Server::ExifToolIntegrator

Inherits:
Object
  • Object
show all
Defined in:
lib/transcoding_machine/server/media_file_attributes.rb

Constant Summary collapse

BINARY = 
["exiftool"]
OPTIONS = 
["-q", "-q", "-s", "-t"]
TIMEOUT = 
60

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file_path) ⇒ ExifToolIntegrator

Returns a new instance of ExifToolIntegrator.



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# File 'lib/transcoding_machine/server/media_file_attributes.rb', line 530

def initialize(file_path)
  commandline = []
  commandline += BINARY
  commandline += OPTIONS
  commandline += [file_path]
  puts "trying to run: #{commandline.join(' ')}"
  result = begin
    timeout(TIMEOUT) do
      Open3.popen3(*commandline) do |i, o, e|
        o.read
      end
    end
  rescue Timeout::Error => e
    puts "Timeout reached when inspecting #{file_path} with ExifTool"
    raise e
  end

  @values = Hash.new

  result.split(/\n/).each do |line|
    line.strip!
    if match = line.match(/([^\t]+)\t(.+)/)
      @values[match[1].underscore] = match[2]
    end
  end

  unless @values['aspect_ratio'].blank?
    aspect_ratio_match = @values['aspect_ratio'].match(/\d+:\d+/)
    aspect_ratio_match = aspect_ratio_match[0] if aspect_ratio_match
    case aspect_ratio_match
    when "16:9", "16/9"
      @aspect_ratio = MediaFileAttributes::ASPECT_RATIO_16_BY_9
    when "4:3", "4/3"
      @aspect_ratio = MediaFileAttributes::ASPECT_RATIO_4_BY_3
    end
  end

  unless @values['poster_time'].blank?
    poster_time_match = @values['poster_time'].match(/(\d+\.\d+)s/)
    @poster_time = poster_time_match[1].to_f if poster_time_match
  end

  unless @values['image_height'].blank?
    @height = @values['image_height'].to_i
  end

  unless @values['image_width'].blank?
    @width = @values['image_width'].to_i
  end
end

Instance Attribute Details

#aspect_ratio ⇒ Object

Returns the value of attribute aspect_ratio.



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# File 'lib/transcoding_machine/server/media_file_attributes.rb', line 525

def aspect_ratio
  @aspect_ratio
end

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/transcoding_machine/server/media_file_attributes.rb', line 525

def height
  @height
end

#poster_time ⇒ Object

Returns the value of attribute poster_time.



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# File 'lib/transcoding_machine/server/media_file_attributes.rb', line 525

def poster_time
  @poster_time
end

#width ⇒ Object

Returns the value of attribute width.



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# File 'lib/transcoding_machine/server/media_file_attributes.rb', line 525

def width
  @width
end