Created
October 8, 2016 19:08
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Using GStreamer with playbin and audio filter as radio player
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#!/usr/bin/env python3 | |
import gi | |
import threading | |
gi.require_version('Gst', '1.0') | |
gi.require_version('GstBase', '1.0') | |
gi.require_version('Gtk', '3.0') | |
from gi.repository import GObject, Gst | |
# Initialize threads | |
GObject.threads_init() | |
# Initialize GStreamer | |
Gst.init(None) | |
# Handle song metadata | |
def on_tag(bus, msg): | |
taglist = msg.parse_tag() | |
print('') | |
print('Tags:', taglist.n_tags()) | |
for key in range(taglist.n_tags()): | |
print('\t%s = %s' % (taglist.nth_tag_name(key), taglist.get_string(taglist.nth_tag_name(key)).value)) | |
# Create element to attenuate/amplify the signal | |
amplify = Gst.ElementFactory.make('audioamplify') | |
amplify.set_property('amplification', 0.1) | |
# Create playbin and add the custom audio sink to it | |
player = Gst.ElementFactory.make("playbin", "player") | |
player.set_property('audio_filter', amplify) | |
# Set URI to online radio (not playlist, direct URI) | |
player.set_property('uri', 'http://....') | |
# Start playing | |
player.set_state(Gst.State.PLAYING) | |
# Listen for metadata | |
bus = player.get_bus() | |
bus.enable_sync_message_emission() | |
bus.add_signal_watch() | |
bus.connect('message::tag', on_tag) | |
loop = GObject.MainLoop() | |
threading.Thread(target=loop.run).start() | |
# Let user stop player gracefully | |
input('Press enter to stop playing...') | |
# Stop loop | |
player.set_state(Gst.State.NULL) | |
loop.quit() |
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