Class: Shoes::Video

Inherits:
Object show all
Defined in:
lib/plugins/video.rb

Constant Summary collapse

JFile = 
java.io.File
BufferSize = 
4096

Instance Method Summary collapse

Constructor Details

#initialize(args) ⇒ Video

Returns a new instance of Video.



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# File 'lib/plugins/video.rb', line 20

def initialize args
  @initials = args
  args.each do |k, v|
    instance_variable_set "@#{k}", v
  end
  Video.class_eval do
    attr_accessor *args.keys
  end
end

Instance Method Details

#decode_input_stream(audio_format, audio_input_stream) ⇒ Object 



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# File 'lib/plugins/video.rb', line 39

def decode_input_stream audio_format, audio_input_stream
  case audio_format.encoding
    when Java::JavazoomSpiVorbisSampledFile::VorbisEncoding, Java::JavazoomSpiMpegSampledFile::MpegEncoding
      decoded_format = AudioFormat.new(AudioFormat::Encoding::PCM_SIGNED, audio_format.getSampleRate(), 16,
        audio_format.getChannels(), audio_format.getChannels() * 2, audio_format.getSampleRate(), false)
      decoded_audio_input_stream = AudioSystem.getAudioInputStream(decoded_format, audio_input_stream)
      return decoded_format, decoded_audio_input_stream
    else
      return audio_format, audio_input_stream
  end
end

#getLine(audioFormat) ⇒ Object 



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# File 'lib/plugins/video.rb', line 70

def getLine(audioFormat)
  res = nil
  info = DataLine::Info.new(SourceDataLine.java_class, audioFormat)
  res = AudioSystem.getLine(info)
  res.open(audioFormat)
  res
end

#play ⇒ Object 



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# File 'lib/plugins/video.rb', line 30

def play
  Thread.new do
    audio_input_stream = AudioSystem.getAudioInputStream JFile.new(@path)
    audio_format = audio_input_stream.getFormat
    rawplay *decode_input_stream(audio_format, audio_input_stream)
    audio_input_stream.close
  end
end

#rawplay(decoded_audio_format, decoded_audio_input_stream) ⇒ Object 



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# File 'lib/plugins/video.rb', line 51

def rawplay(decoded_audio_format, decoded_audio_input_stream)
  sampled_data = Java::byte[BufferSize].new
  line = getLine(decoded_audio_format)
  if line != nil
    line.start()
    bytes_read = 0, bytes_written = 0
    while bytes_read != -1
      bytes_read = decoded_audio_input_stream.read(sampled_data, 0, sampled_data.length)
      if bytes_read != -1
        bytes_written = line.write(sampled_data, 0, bytes_read)
      end
    end
    line.drain()
    line.stop()
    line.close()
    decoded_audio_input_stream.close()
  end
end