def __init__(self):
print("Init GStreamer...")
# This is used to keep track of time between callbacks.
self.player_timer = Timer()
# Store the track object that is currently playing
self.loaded_track = None
# This is used to keep note of what state of playing we should be in
self.play_state = 0 # 0 is stopped, 1 is playing, 2 is paused
# Initiate GSteamer
Gst.init([])
self.mainloop = GLib.MainLoop()
# Populate list of output devices with defaults
outputs = {}
devices = [
"PulseAudio",
"ALSA",
"JACK",
]
if tauon.snap_mode: # Snap permissions don't support these by default
devices.remove("JACK")
devices.remove("ALSA")
# Get list of available audio device
self.dm = Gst.DeviceMonitor()
self.dm.start()
for device in self.dm.get_devices():
if device.get_device_class() == "Audio/Sink":
element = device.create_element(None)
type_name = element.get_factory().get_name()
if hasattr(element.props, "device"):
device_name = element.props.device
display_name = device.get_display_name()
# This is used by the UI to present list of options to the user in audio settings
outputs[display_name] = (type_name, device_name)
devices.append(display_name)
# dm.stop() # Causes a segfault sometimes
pctl.gst_outputs = outputs
pctl.gst_devices = devices
# Create main "playbin" pipeline for playback
self.playbin = Gst.ElementFactory.make("playbin", "player")
# Create custom output bin from user preferences
if not prefs.gst_use_custom_output:
prefs.gst_output = prefs.gen_gst_out()
self._output = Gst.parse_bin_from_description(
prefs.gst_output, ghost_unlinked_pads=True)
# Create a bin for the audio pipeline
self._sink = Gst.ElementFactory.make("bin", "sink")
self._sink.add(self._output)
# Spectrum -------------------------
# Cant seem to figure out how to process these magnitudes in a way that looks good
# self.spectrum = Gst.ElementFactory.make("spectrum", "spectrum")
# self.spectrum.set_property('bands', 20)
# self.spectrum.set_property('interval', 10000000)
# self.spectrum.set_property('threshold', -100)
# self.spectrum.set_property('post-messages', True)
# self.spectrum.set_property('message-magnitude', True)
#
# self.playbin.set_property('audio-filter', self.spectrum)
# # ------------------------------------
# # Level Meter -------------------------
self.level = Gst.ElementFactory.make("level", "level")
self.level.set_property('interval', 20000000)
self.playbin.set_property('audio-filter', self.level)
# # ------------------------------------
self._eq = Gst.ElementFactory.make("equalizer-nbands", "eq")
self._vol = Gst.ElementFactory.make("volume", "volume")
self._sink.add(self._eq)
self._sink.add(self._vol)
self._eq.link(self._vol)
self._vol.link(self._output)
self._eq.set_property("num-bands", 10 + 2)
# Set the equalizer based on user preferences
# Using workaround for "inverted slider" bug.
# Thanks to Lollypop and Clementine for discovering this.
# Ref https://github.com/Taiko2k/TauonMusicBox/issues/414
for i in range(10 + 2):
band = self._eq.get_child_by_index(i)
band.set_property("freq", 0)
band.set_property("bandwidth", 0)
band.set_property("gain", 0)
self.set_eq()
# if prefs.use_eq:
# self._eq.set_property("band" + str(i), level * -1)
# else:
# self._eq.set_property("band" + str(i), 0.0)
# Set up sink pad for the intermediate bin via the
# first element (volume)
ghost = Gst.GhostPad.new("sink", self._eq.get_static_pad("sink"))
self._sink.add_pad(ghost)
# Connect the playback bin to to the intermediate bin sink pad
self.playbin.set_property("audio-sink", self._sink)
# The pipeline should look something like this -
# (player) -> [(eq) -> (volume) -> (output)]
# Create controller for pause/resume volume fading
self.c_source = GstController.InterpolationControlSource()
self.c_source.set_property('mode',
GstController.InterpolationMode.LINEAR)
self.c_binding = GstController.DirectControlBinding.new(
self._vol, "volume", self.c_source)
self._vol.add_control_binding(self.c_binding)
# Set callback for the main callback loop
GLib.timeout_add(50, self.main_callback)
self.playbin.connect("about-to-finish",
self.about_to_finish) # Not used
# Setup bus and select what types of messages we want to listen for
bus = self.playbin.get_bus()
bus.add_signal_watch()
bus.connect('message::element', self.on_message)
bus.connect('message::buffering', self.on_message)
bus.connect('message::error', self.on_message)
bus.connect('message::tag', self.on_message)
bus.connect('message::warning', self.on_message)
# bus.connect('message::eos', self.on_message)
# Variables used with network downloading
self.temp_id = "a"
self.url = None
self.dl_ready = True
self.using_cache = False
self.temp_path = "" # Full path + filename
# self.level_train = []
self.seek_timer = Timer()
self.seek_timer.force_set(10)
self.buffering = False
# Other
self.end_timer = Timer()
# Start GLib mainloop
self.mainloop.run()
def __init__(self):
# This is used to keep track of time between callbacks to progress the seek bar
self.player_timer = Timer()
# This is used to keep note of what state of playing we should be in
self.play_state = 0 # 0 is stopped, 1 is playing, 2 is paused
# Initiate GSteamer
Gst.init([])
self.mainloop = GLib.MainLoop()
# Get list of available audio device
pctl.gst_devices = ["Auto", "PulseAudio", "ALSA", "JACK"]
if tauon.snap_mode:
pctl.gst_devices.remove("JACK")
pctl.gst_devices.remove("ALSA")
pctl.gst_outputs.clear()
dm = Gst.DeviceMonitor()
dm.start()
for device in dm.get_devices():
if device.get_device_class() == "Audio/Sink":
element = device.create_element(None)
type_name = element.get_factory().get_name()
device_name = element.props.device
display_name = device.get_display_name()
# This is used by the UI to present list of options to the user in audio settings
pctl.gst_outputs[display_name] = (type_name, device_name)
pctl.gst_devices.append(display_name)
dm.stop()
# Create main "playbin" pipeline for playback
self.playbin = Gst.ElementFactory.make("playbin", "player")
# Create output bin
if not prefs.gst_use_custom_output:
prefs.gst_output = prefs.gen_gst_out()
self._output = Gst.parse_bin_from_description(
prefs.gst_output, ghost_unlinked_pads=True)
# Create a bin for the audio pipeline
self._sink = Gst.ElementFactory.make("bin", "sink")
self._sink.add(self._output)
# # Spectrum -------------------------
# # This kind of works, but is a different result to that of the bass backend.
# # This seems linear and also less visually appealing.
#
# self.spectrum = Gst.ElementFactory.make("spectrum", "spectrum")
# self.spectrum.set_property('bands', 280)
# self.spectrum.set_property('interval', 10000000)
# self.spectrum.set_property('post-messages', True)
# self.spectrum.set_property('message-magnitude', True)
#
# self.playbin.set_property('audio-filter', self.spectrum)
# # ------------------------------------
# Create volume element
self._vol = Gst.ElementFactory.make("volume", "volume")
self._sink.add(self._vol)
self._vol.link(self._output)
# Set up sink pad for the intermediate bin via the
# first element (volume)
ghost = Gst.GhostPad.new("sink", self._vol.get_static_pad("sink"))
self._sink.add_pad(ghost)
# Connect the playback bin to to the intermediate bin sink pad
self.playbin.set_property("audio-sink", self._sink)
# The pipeline should look something like this -
# (player) -> [(volume) -> (output)]
# Set callback for the main callback loop
GLib.timeout_add(50, self.main_callback)
# self.playbin.connect("about-to-finish", self.about_to_finish) # Not used by anything
# # Enable bus to get spectrum messages
bus = self.playbin.get_bus()
bus.add_signal_watch()
bus.connect('message::element', self.on_message)
bus.connect('message::buffering', self.on_message)
bus.connect('message::error', self.on_message)
bus.connect('message::tag', self.on_message)
# bus.connect('message::warning', self.on_message)
# bus.connect('message::eos', self.on_message)
# Variables used with network downloading
self.temp_id = "a"
self.url = None
self.dl_ready = False
self.temp_path = "" # Full path + filename
# # Broadcasting pipeline ------------
#
# # This works, but only for one track, switching tracks seems to be a more complicated process.
#
# self.b_playbin = Gst.ElementFactory.make("playbin", "player")
#
# # Create output bin
# # Using tcpserversink seems to mostly work with the html5 player, though an HTTP server may be preferred.
# self._b_output = Gst.parse_bin_from_description(
# "audioconvert ! vorbisenc ! oggmux ! tcpserversink port=8000", ghost_unlinked_pads=True)
# #"autoaudiosink", ghost_unlinked_pads=True)
#
# # Connect the playback bin to to the output bin
# self.b_playbin.set_property("audio-sink", self._b_output)
# # ----------------------------------------
# Start GLib mainloop
self.mainloop.run()
