Module: Jekyll::DistorteD::Molecule::Video

Includes:
Cooltrainer::DistorteD::Video
Defined in:
lib/distorted-jekyll/molecule/video.rb

Instance Method Summary collapse

Instance Method Details

#destinations(dest) ⇒ Object

Return a Set of extant video variations due to inability/unwillingness to exactly predict GStreamer’s HLS/DASH segment output naming even if we are controlling all variables like segment length etc. This implementation may give stale segments but will at least speed up site generation by not having to regenerate the video every time.



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# File 'lib/distorted-jekyll/molecule/video.rb', line 35

def destinations(dest)
  wanted = Set[]
  if Dir.exist?(File.join(dest, @relative_dest))
    hls_dir = File.join(dest, @relative_dest, "#{basename}.hls")
    if Dir.exist?(hls_dir)
      wanted.merge(Dir.entries(hls_dir).to_set.map{|f| File.join(hls_dir, f)})
    end
  end
  wanted
end

#modified? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/distorted-jekyll/molecule/video.rb', line 46

def modified?
  # We can't use the standard Static::State#modified? here until
  # I figure out how to cleanly get a duplicate of what would be
  # the generated filenames from GStreamer's sink.
  #
  # For now for the sake of speeding up my site generation
  # I'll assume not-modified that if the output variant (e.g. DASH/HLS)
  # container dir exists and contains at least two files:
  # the playlist and at least one segment.
  #
  # Hacky HLS-only right now until dashsink2 lands in upstream Gst.
  #
  # Assume modified for the sake of freshness :)
  modified = true

  site_dest = Jekyll::DistorteD::Floor::config(:destination).to_s
  if Dir.exist?(site_dest)

    dd_dest = File.join(site_dest, @relative_dest)
    if Dir.exist?(dd_dest)

      hls_dir = File.join(dd_dest, "#{basename}.hls")
      if Dir.exist?(hls_dir)
        need_filez = Set["#{basename}.m3u8"]
        var_filez = Dir.entries(hls_dir).to_set
        if need_filez.subset?(var_filez) and var_filez.count > 2
          modified = false
        end
      end

    end
  end
  Jekyll.logger.debug("#{@name} modified?",  modified)
  modified
end

#render_to_output_buffer(context, output) ⇒ Object 



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# File 'lib/distorted-jekyll/molecule/video.rb', line 11

def render_to_output_buffer(context, output)
  super
  begin
    output << parse_template.render({
      'name' => @name,
      'basename' => File.basename(@name, '.*'),
      'path' => @url,
      'caption' => abstract(:caption),
    })
  rescue Liquid::SyntaxError => l
    unless Jekyll.env == 'production'.freeze
      output << parse_template(name: 'error_code'.freeze).render({
        'message' => l.message,
      })
    end
  end
  output
end