scripts

misc scripts and tools
git clone git://git.2f30.org/scripts.git
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mkcdtoc (1907B)


      1 #!/usr/bin/env ruby
      2 
      3 # prepare audio files for burning to audio cd with cd-text
      4 # creates a sequence of volume-normalized track??.wav files
      5 # generates a cd.toc file using the original metadata
      6 
      7 require 'rubygems'
      8 require 'taglib'
      9 require 'stringex'
     10 # also needs ffmpeg for decoding
     11 # also needs cdrdao for burning
     12 
     13 if ARGV.empty?
     14     puts 'usage: mkcdtoc file ...'
     15     exit
     16 end
     17 files = ARGV
     18 
     19 # collect all info first
     20 tracks = []
     21 files.each_with_index do |fname, i|
     22     tracks << TagLib::FileRef.open(fname) do |f|
     23         trk = {}
     24         trk['source'] = fname
     25         # audio cd supports 99 tracks max
     26         trk['dest'] = "track%02d.wav" % (i + 1)
     27         trk['artist'] = f.tag.artist.to_url(:force_downcase => false,
     28             :replace_whitespace_with => ' ')
     29         trk['title'] = f.tag.title.to_url(:force_downcase => false,
     30             :replace_whitespace_with => ' ')
     31         trk
     32     end
     33 end
     34 
     35 # create wave files
     36 tracks.each do |trk|
     37     if File.exists? trk['dest']
     38         puts "skipping #{trk['dest']} for it exists"
     39     else
     40         puts "generate #{trk['dest']} from #{trk['source']}"
     41         ffopts = '-v quiet -vol 256 -acodec pcm_s16le -ac 2' 
     42         cmd = "ffmpeg -i #{trk['source']} #{ffopts} #{trk['dest']}"
     43         `#{cmd}`
     44         unless $?.exitstatus == 0 then
     45             puts "something went wrong while running:\n#{cmd}"
     46             exit 1
     47         end
     48     end
     49 end
     50 
     51 # create toc file
     52 f = File.open('cd.toc', 'w')
     53 
     54 # generate toc header
     55 f.puts <<PRE
     56 CD_DA
     57 CD_TEXT {
     58     LANGUAGE_MAP {
     59         0 : EN
     60     }
     61     LANGUAGE 0 {
     62         PERFORMER ""
     63         TITLE ""
     64     }
     65 }
     66 PRE
     67 
     68 # generate toc entries
     69 tracks.each do |trk|
     70 f.puts <<TRK
     71 
     72 TRACK AUDIO
     73 CD_TEXT {
     74     LANGUAGE 0 {
     75         PERFORMER "#{trk['artist']}"
     76         TITLE "#{trk['title']}"
     77     }
     78 }
     79 FILE "#{trk['dest']}" 0
     80 TRK
     81 end
     82 
     83 f.close
     84 
     85 puts "burn with:"
     86 puts "cdrdao write --speed 1 --eject cd.toc\n"
     87 
     88 # vim:set ts=4 sw=4 et: