Class: Ipod::Track

Inherits:
OpenStruct
  • Object
show all
Defined in:
lib/ipod/track.rb

Constant Summary collapse

FinishedProgress = 
0.97
SecondsPerTick = 
0.256

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.sec_to_ticks(sec) ⇒ Object 



49
50
51
 
# File 'lib/ipod/track.rb', line 49

def self.sec_to_ticks(sec)
  sec / SecondsPerTick
end

.ticks_to_sec(ticks) ⇒ Object 



53
54
55
 
# File 'lib/ipod/track.rb', line 53

def self.ticks_to_sec(ticks)
  ticks * SecondsPerTick
end

Instance Method Details

#absolute_path ⇒ Object 



11
12
13
 
# File 'lib/ipod/track.rb', line 11

def absolute_path
  File.join ipod_root, filename
end

#exists? ⇒ Boolean

Returns:

  • (Boolean) 


15
16
17
 
# File 'lib/ipod/track.rb', line 15

def exists?
  @exists ||= File.exists? absolute_path
end

#finished? ⇒ Boolean

Returns:

  • (Boolean) 


19
20
21
 
# File 'lib/ipod/track.rb', line 19

def finished?
  (playcount and playcount > 0) or progress > FinishedProgress
end

#length ⇒ Object 



31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
 
# File 'lib/ipod/track.rb', line 31

def length
  return @length if @length
  # if file is writable TagLib opens it read-write and appears to write something when the file
  # gets closed, or in any case closing a file open read-write is slow on slow media.
  #
  # if file is readonly TagLib still opens it but closing is much faster.
  #
  old_stat = File::Stat.new(absolute_path)
  begin
    FileUtils.chmod('a-w', absolute_path)
    quietly {
      return @length = TagLib::FileRef.open(absolute_path){|file| file.audio_properties.length}
    }
  ensure
    FileUtils.chmod(old_stat.mode, absolute_path)
  end
end

#pos ⇒ Object 



27
28
29
 
# File 'lib/ipod/track.rb', line 27

def pos
  Track.ticks_to_sec(bookmarktime || 0.0)
end

#progress ⇒ Object 



23
24
25
 
# File 'lib/ipod/track.rb', line 23

def progress
  pos / length
end