Class: Paperclip::Qtfaststart

Inherits:
Processor
  • Object
show all
Defined in:
lib/paperclip_processors/qtfaststart.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(file, options = {}, attachment = nil) ⇒ Qtfaststart

Creates a Video object set to work on the file given. It will attempt to reposition the moov atom in the video given if streaming is set.



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# File 'lib/paperclip_processors/qtfaststart.rb', line 8

def initialize file, options = {}, attachment = nil
  @streaming      = options[:streaming]
  @file            = file
  @whiny           = options[:whiny].nil? ? true : options[:whiny]
  @format          = options[:format]
  @current_format  = File.extname(@file.path)
  @basename        = File.basename(@file.path, @current_format)
  attachment.instance_write(:meta, @meta)
end

Instance Attribute Details

#format ⇒ Object

Returns the value of attribute format.



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# File 'lib/paperclip_processors/qtfaststart.rb', line 3

def format
  @format
end

#streaming ⇒ Object

Returns the value of attribute streaming.



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# File 'lib/paperclip_processors/qtfaststart.rb', line 3

def streaming
  @streaming
end

#whiny ⇒ Object

Returns the value of attribute whiny.



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# File 'lib/paperclip_processors/qtfaststart.rb', line 3

def whiny
  @whiny
end

Instance Method Details

#make ⇒ Object

Performs the atom repositioning on file. Returns the Tempfile that contains the new video or the original file if streaming wasn’t set.



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# File 'lib/paperclip_processors/qtfaststart.rb', line 21

def make
  return @file unless @streaming
  
  src = @file
  dst = Tempfile.new([@basename, @format ? ".#{@format}" : ''])
  dst.binmode
  
  parameters = []
  # Add source
  parameters << ":source"
  # Add destination
  parameters << ":dest"

  parameters = parameters.flatten.compact.join(" ").strip.squeeze(" ")
  
  Paperclip.log("[qtfaststart] #{parameters}")
  begin
    success = Paperclip.run("qt-faststart", parameters, :source => "#{File.expand_path(src.path)}", :dest => File.expand_path(dst.path))
  rescue Cocaine::ExitStatusError => e
    raise PaperclipError, "error while processing video for #{@basename}: #{e}" if @whiny
  end

  dst
end