halida · March 6, 2015 06:41
diff --git a/covert.rb b/covert.rb
 def make_preview_html
  preview_path = 'preview'

  styles = """
  body .blk {
    margin: 0 10px 10px 0;
    display: inline-block;
  }
  body .blk img {
    width: 160px;
    height: 120px;
  }
  table, th, td {
    border: 1px solid black;
  }
  """

  header = """
  <html>
    <head> <style>#{styles}</style> </head>
    <body>
      <h1>Preview</h1>
      <div>
  """

  footer = """<div> </body> </html> """

  out = [header]

  out << "<table>"
  # get all preview file
  Dir.glob(File.join preview_path, '**/*.gif').map do |filename|
    origin_filename = filename.match(/preview\/(.*).gif/)[1]
    path = origin_filename.split('/')[0]
    [path, filename, origin_filename]
  end.group_by(&:first).each do |path, data|
    out << "<tr> <td> #{path} </td> <td>"
    data.each do |d|
      path, filename, origin_filename = d
      out << """
      <div class='blk'>
        <a href='#{origin_filename}' target='_blank'> <img src='#{filename}'> </a>
      </div>
      """
    end
    out << "</td></tr>"
  end
  out << "/<table>"

  out << footer

  File.open('preview.html', 'w+') do |f|
    f.write out.map(&:strip).join("\n\n")
  end
 end

 def convert
  preview_path = 'preview'
  temp_path = '/tmp/processing'

  # cleanup
  `rm -rf #{temp_path}`
  `mkdir -p #{temp_path}`
  `rm -rf #{preview_path}`
  `mkdir -p #{preview_path}`

  (Dir.glob('*') - ['preview']).each do |dir|
    # dir = (Dir.glob('*') - ['preview']).first
    `mkdir -p #{File.join preview_path, dir}`
    puts "list #{dir}: #{Dir.glob(File.join(dir, '*'))}"

    Dir.glob(File.join(dir, '*')).each do |filename|
      # filename = Dir.glob(File.join(dir, '*')).first
      puts "converting: #{filename}"

      # get duration
      duration = `avprobe #{filename} -show_format -loglevel panic`.split("\n").compact.select{|l| l =~ /duration/}.first.split('=')[1].to_i

      # for each sample time, save a image
      step = duration / 8
      (0..8).each do |i|
        `avconv -ss #{i*step} -i #{filename} -r 1 -vframes 1 -s 320x240 #{File.join temp_path, "#{i.to_s.rjust(8, '0')}.jpg"} -loglevel panic`
      end
      image_files = Dir.glob(File.join(temp_path, '*.jpg')).sort.join(' ')

      # convert image to gif
      `convert -delay 50 -loop 0 #{image_files} #{File.join preview_path, dir, File.basename(filename)}.gif`
      `rm #{File.join temp_path, '*.jpg'}`
    end
  end
 end
	def make_preview_html
	preview_path = 'preview'

	styles = """
	body .blk {
	margin: 0 10px 10px 0;
	display: inline-block;
	}
	body .blk img {
	width: 160px;
	height: 120px;
	}
	table, th, td {
	border: 1px solid black;
	}
	"""

	header = """
	<html>
	<head> <style>#{styles}</style> </head>
	<body>
	<h1>Preview</h1>
	<div>
	"""

	footer = """<div> </body> </html> """

	out = [header]

	out << "<table>"
	# get all preview file
	Dir.glob(File.join preview_path, '*/.gif').map do \|filename\|
	origin_filename = filename.match(/preview\/(.*).gif/)[1]
	path = origin_filename.split('/')[0]
	[path, filename, origin_filename]
	end.group_by(&:first).each do \|path, data\|
	out << "<tr> <td> #{path} </td> <td>"
	data.each do \|d\|
	path, filename, origin_filename = d
	out << """
	<div class='blk'>
	<a href='#{origin_filename}' target='_blank'> <img src='#{filename}'> </a>
	</div>
	"""
	end
	out << "</td></tr>"
	end
	out << "/<table>"

	out << footer

	File.open('preview.html', 'w+') do \|f\|
	f.write out.map(&:strip).join("\n\n")
	end
	end

	def convert
	preview_path = 'preview'
	temp_path = '/tmp/processing'

	# cleanup
	`rm -rf #{temp_path}`
	`mkdir -p #{temp_path}`
	`rm -rf #{preview_path}`
	`mkdir -p #{preview_path}`

	(Dir.glob('*') - ['preview']).each do \|dir\|
	# dir = (Dir.glob('*') - ['preview']).first
	`mkdir -p #{File.join preview_path, dir}`
	puts "list #{dir}: #{Dir.glob(File.join(dir, '*'))}"

	Dir.glob(File.join(dir, '*')).each do \|filename\|
	# filename = Dir.glob(File.join(dir, '*')).first
	puts "converting: #{filename}"

	# get duration
	duration = `avprobe #{filename} -show_format -loglevel panic`.split("\n").compact.select{\|l\| l =~ /duration/}.first.split('=')[1].to_i

	# for each sample time, save a image
	step = duration / 8
	(0..8).each do \|i\|
	`avconv -ss #{i*step} -i #{filename} -r 1 -vframes 1 -s 320x240 #{File.join temp_path, "#{i.to_s.rjust(8, '0')}.jpg"} -loglevel panic`
	end
	image_files = Dir.glob(File.join(temp_path, '*.jpg')).sort.join(' ')

	# convert image to gif
	`convert -delay 50 -loop 0 #{image_files} #{File.join preview_path, dir, File.basename(filename)}.gif`
	`rm #{File.join temp_path, '*.jpg'}`
	end
	end
	end