#!/usr/bin/python

from gi.repository import Gtk, Gst, GObject

import os, sys

#Comment the first line and uncomment the second before installing

#or making the tarball (alternatively, use project variables)

UI_FILE = "src/guitar_tuner.ui"

#UI_FILE = "/usr/local/share/guitar_tuner_py/ui/guitar_tuner.ui"

class GUI:

	LENGTH = 500

	# Frequencies of the strings

	frequencies = {

		'E': 329.63,

		'A': 440,

		'D': 587.33,

		'G': 783.99,

		'B': 987.77,

		'e': 1318.5

	}

	def __init__(self):

		self.builder = Gtk.Builder()

		self.builder.add_from_file(UI_FILE)

		self.builder.connect_signals(self)

		window = self.builder.get_object('window')

		window.show_all()

	def on_button_clicked (self, button):

		label = button.get_child()

		text = label.get_label()

		self.play_sound (self.frequencies[text])

	def destroy(window, self):

		Gtk.main_quit()

	def pipeline_stop(self, pipeline):

		pipeline.set_state(Gst.State.NULL)

		return False

	def play_sound(self, frequency):

		pipeline = Gst.Pipeline(name='note')

		source = Gst.ElementFactory.make('audiotestsrc', 'src')

		sink = Gst.ElementFactory.make('autoaudiosink', 'output')

		source.set_property('freq', frequency)

		pipeline.add(source)

		pipeline.add(sink)

		source.link(sink)

		pipeline.set_state(Gst.State.PLAYING)

		GObject.timeout_add(self.LENGTH, self.pipeline_stop, pipeline)

def main():

	Gst.init_check(sys.argv)

	app = GUI()

	Gtk.main()

if __name__ == "__main__":

    sys.exit(main())