scripts

commit 6c782693658ae47541d8635b4b80489b452244c4
parent ba5fac9cf1ca63b112973fabbdda405f26c013e9
Author: lostd <lostd@2f30.org>
Date:   Sat, 24 Aug 2013 13:03:08 +0300

my audio cd creation script

Diffstat:
A
mkcdtoc
 | 
88
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

1 file changed, 88 insertions(+), 0 deletions(-)
diff --git a/mkcdtoc b/mkcdtoc
@@ -0,0 +1,88 @@
+#!/usr/bin/env ruby
+
+# prepare audio files for burning to audio cd with cd-text
+# creates a sequence of volume-normalized track??.wav files
+# generates a cd.toc file using the original metadata
+
+require 'rubygems'
+require 'taglib'
+require 'stringex'
+# also needs ffmpeg for decoding
+# also needs cdrdao for burning
+
+if ARGV.empty?
+    puts 'usage: mkcdtoc file ...'
+    exit
+end
+files = ARGV
+
+# collect all info first
+tracks = []
+files.each_with_index do |fname, i|
+    tracks << TagLib::FileRef.open(fname) do |f|
+        trk = {}
+        trk['source'] = fname
+        # audio cd supports 99 tracks max
+        trk['dest'] = "track%02d.wav" % (i + 1)
+        trk['artist'] = f.tag.artist.to_url(:force_downcase => false,
+            :replace_whitespace_with => ' ')
+        trk['title'] = f.tag.title.to_url(:force_downcase => false,
+            :replace_whitespace_with => ' ')
+        trk
+    end
+end
+
+# create wave files
+tracks.each do |trk|
+    if File.exists? trk['dest']
+        puts "skipping #{trk['dest']} for it exists"
+    else
+        puts "generate #{trk['dest']} from #{trk['source']}"
+        ffopts = '-v quiet -vol 256 -acodec pcm_s16le -ac 2' 
+        cmd = "ffmpeg -i #{trk['source']} #{ffopts} #{trk['dest']}"
+        `#{cmd}`
+        unless $?.exitstatus == 0 then
+            puts "something went wrong while running:\n#{cmd}"
+            exit 1
+        end
+    end
+end
+
+# create toc file
+f = File.open('cd.toc', 'w')
+
+# generate toc header
+f.puts <<PRE
+CD_DA
+CD_TEXT {
+    LANGUAGE_MAP {
+        0 : EN
+    }
+    LANGUAGE 0 {
+        PERFORMER ""
+        TITLE ""
+    }
+}
+PRE
+
+# generate toc entries
+tracks.each do |trk|
+f.puts <<TRK
+
+TRACK AUDIO
+CD_TEXT {
+    LANGUAGE 0 {
+        PERFORMER "#{trk['artist']}"
+        TITLE "#{trk['title']}"
+    }
+}
+FILE "#{trk['dest']}" 0
+TRK
+end
+
+f.close
+
+puts "burn with:"
+puts "cdrdao write --speed 1 --eject cd.toc\n"
+
+# vim:set ts=4 sw=4 et: