#!/usr/bin/env ruby

require 'gst'

loop = GLib::MainLoop.new(nil, false)

pipeline = Gst::Pipeline.new("ogg-audio-player")
source = Gst::ElementFactory.make("filesrc", "file-source")
parser = Gst::ElementFactory.make("oggdemux", "ogg-parser")
decoder = Gst::ElementFactory.make("vorbisdec", "vorbis-decoder")
converter = Gst::ElementFactory.make("audioconvert", "converter")
sink = Gst::ElementFactory.make("alsasink", "alsa-output")

source.location = ARGV.shift

bus = pipeline.bus
bus.add_watch do |bus, message|
  case message.type
  when Gst::Message::EOS
    loop.quit
  when Gst::Message::ERROR
    p message.parse_error
    loop.quit
  end
  true
end


pipeline.add(source, parser, decoder, converter, sink)
source >> parser
decoder >> converter >> sink

parser.signal_connect("pad-added") do |element, pad|
  sink_pad = decoder.get_pad("sink")
  pad.link(sink_pad)
end

puts "Setting to PLAYING"
pipeline.play
puts "Running"
loop.run

puts "Returned, stopping playback"
pipeline.stop