class WaveformSeekBar(Gtk.Box):
"""A widget containing labels and the seekbar."""
def __init__(self, player, library):
super(WaveformSeekBar, self).__init__()
self._player = player
self._rms_vals = []
self._hovering = False
self._elapsed_label = TimeLabel()
self._remaining_label = TimeLabel()
self._waveform_scale = WaveformScale(player)
self.pack_start(Align(self._elapsed_label, border=6), False, True, 0)
self.pack_start(self._waveform_scale, True, True, 0)
self.pack_start(Align(self._remaining_label, border=6), False, True, 0)
for child in self.get_children():
child.show_all()
self._waveform_scale.connect('size-allocate',
self._update_redraw_interval)
self._waveform_scale.connect('motion-notify-event',
self._on_mouse_hover)
self._waveform_scale.connect('leave-notify-event',
self._on_mouse_leave)
self._label_tracker = TimeTracker(player)
self._label_tracker.connect('tick', self._on_tick_label, player)
self._redraw_tracker = TimeTracker(player)
self._redraw_tracker.connect('tick', self._on_tick_waveform, player)
connect_destroy(player, 'seek', self._on_player_seek)
connect_destroy(player, 'song-started', self._on_song_started)
connect_destroy(player, 'song-ended', self._on_song_ended)
connect_destroy(player, 'notify::seekable', self._on_seekable_changed)
connect_destroy(library, 'changed', self._on_song_changed, player)
self.connect('destroy', self._on_destroy)
self._update(player)
if player.info:
self._create_waveform(player.info, CONFIG.max_data_points)
def _create_waveform(self, song, points):
# Close any existing pipeline to avoid leaks
self._clean_pipeline()
if not song.is_file:
return
command_template = """
uridecodebin name=uridec
! audioconvert
! level name=audiolevel interval={} post-messages=true
! fakesink sync=false"""
interval = int(song("~#length") * 1E9 / points)
print_d("Computing data for each %.3f seconds" % (interval / 1E9))
command = command_template.format(interval)
pipeline = Gst.parse_launch(command)
pipeline.get_by_name("uridec").set_property("uri", song("~uri"))
bus = pipeline.get_bus()
self._bus_id = bus.connect("message", self._on_bus_message)
bus.add_signal_watch()
pipeline.set_state(Gst.State.PLAYING)
self._pipeline = pipeline
self._new_rms_vals = []
def _on_bus_message(self, bus, message):
if message.type == Gst.MessageType.ERROR:
error, debug = message.parse_error()
print_d("Error received from element {name}: {error}".format(
name=message.src.get_name(), error=error))
print_d("Debugging information: {}".format(debug))
elif message.type == Gst.MessageType.ELEMENT:
structure = message.get_structure()
if structure.get_name() == "level":
rms_db = structure.get_value("rms")
if rms_db:
# Calculate average of all channels (usually 2)
rms_db_avg = sum(rms_db) / len(rms_db)
# Normalize dB value to value between 0 and 1
rms = pow(10, (rms_db_avg / 20))
self._new_rms_vals.append(rms)
else:
print_w("Got unexpected message of type {}"
.format(message.type))
elif message.type == Gst.MessageType.EOS:
self._clean_pipeline()
# Update the waveform with the new data
self._rms_vals = self._new_rms_vals
self._waveform_scale.reset(self._rms_vals)
self._waveform_scale.set_placeholder(False)
self._update_redraw_interval()
# Clear temporary reference to the waveform data
del self._new_rms_vals
def _clean_pipeline(self):
if hasattr(self, "_pipeline") and self._pipeline:
self._pipeline.set_state(Gst.State.NULL)
if self._bus_id:
bus = self._pipeline.get_bus()
bus.remove_signal_watch()
bus.disconnect(self._bus_id)
self._bus_id = None
if self._pipeline:
self._pipeline = None
def _update_redraw_interval(self, *args):
if self._player.info and self.is_visible():
# Must be recomputed when size is changed
interval = self._waveform_scale.compute_redraw_interval()
self._redraw_tracker.set_interval(interval)
def _on_destroy(self, *args):
self._clean_pipeline()
self._label_tracker.destroy()
self._redraw_tracker.destroy()
def _on_tick_label(self, tracker, player):
self._update_label(player)
def _on_tick_waveform(self, tracker, player):
self._update_waveform(player)
def _on_seekable_changed(self, player, *args):
self._update_label(player)
def _on_player_seek(self, player, song, ms):
self._update(player)
def _on_song_changed(self, library, songs, player):
if not player.info:
return
# Check that the currently playing song has changed
if player.info in songs:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
self._resize_labels(player.info)
# Only update the label if some tag value changed
self._update_label(player)
def _on_song_started(self, player, song):
if player.info:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
self._resize_labels(player.info)
self._waveform_scale.set_placeholder(True)
self._update(player, True)
def _on_song_ended(self, player, song, ended):
self._update(player)
def _update(self, player, full_redraw=False):
self._update_label(player)
self._update_waveform(player, full_redraw)
def _update_label(self, player):
if player.info:
if self._hovering:
# Show the position pointed by the mouse
position = self._waveform_scale.get_mouse_position()
else:
# Show the position of the player (converted in seconds)
position = player.get_position() / 1000.0
length = player.info("~#length")
remaining = length - position
self._elapsed_label.set_time(position)
self._remaining_label.set_time(remaining)
self._elapsed_label.set_disabled(not player.seekable)
self._remaining_label.set_disabled(not player.seekable)
self.set_sensitive(player.seekable)
else:
self._remaining_label.set_disabled(True)
self._elapsed_label.set_disabled(True)
self.set_sensitive(False)
def _update_waveform(self, player, full_redraw=False):
if player.info:
# Position in ms, length in seconds
position = player.get_position() / 1000.0
length = player.info("~#length")
if length != 0:
self._waveform_scale.set_position(position / length)
else:
print_d("Length reported as zero for %s" % player.info)
self._waveform_scale.set_position(0)
if position == 0 or full_redraw:
self._waveform_scale.queue_draw()
else:
(x, y, w, h) = self._waveform_scale.compute_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.set_placeholder(True)
self._waveform_scale.queue_draw()
def _on_mouse_hover(self, _, event):
def clamp(a, x, b):
'''Return x if a <= x <= b, else the a or b nearest to x.'''
return min(max(x, a), b)
width = self._waveform_scale.get_allocation().width
self._waveform_scale.set_mouse_x_position(clamp(0, event.x, width))
if self._hovering:
(x, y, w, h) = self._waveform_scale.compute_hover_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.queue_draw()
self._update_label(self._player)
self._hovering = True
def _on_mouse_leave(self, _, event):
self._waveform_scale.set_mouse_x_position(-1)
self._waveform_scale.queue_draw()
self._hovering = False
self._update_label(self._player)
def _resize_labels(self, song):
"""Resize the labels to make sure there is enough space to display the
length of the songs.
This prevents the waveform from changing size when the position changes
from 9:59 to 10:00 for example."""
length = util.format_time_display(song("~#length"))
# Get the width needed to display the length of the song (the text
# displayed in the labels will always be shorter than that)
layout = self._remaining_label.get_layout()
layout.set_text(length, -1)
width, height = layout.get_pixel_size()
# Set it as the minimum width of the labels to prevent them from
# changing width
self._remaining_label.set_size_request(width, -1)
self._elapsed_label.set_size_request(width, -1)
class WaveformSeekBar(Gtk.Box):
"""A widget containing labels and the seekbar."""
def __init__(self, player, library):
super(WaveformSeekBar, self).__init__()
self._player = player
self._rms_vals = []
self._hovering = False
self._elapsed_label = TimeLabel()
self._remaining_label = TimeLabel()
self._waveform_scale = WaveformScale(player)
self.pack_start(Align(self._elapsed_label, border=6), False, True, 0)
self.pack_start(self._waveform_scale, True, True, 0)
self.pack_start(Align(self._remaining_label, border=6), False, True, 0)
for child in self.get_children():
child.show_all()
self._waveform_scale.connect('size-allocate', self._on_size_change)
self._waveform_scale.connect('motion-notify-event',
self._on_mouse_hover)
self._waveform_scale.connect('leave-notify-event',
self._on_mouse_leave)
self._label_tracker = TimeTracker(player)
self._label_tracker.connect('tick', self._on_tick_label)
self._redraw_tracker = TimeTracker(player)
self._redraw_tracker.connect('tick', self._on_tick_waveform)
connect_destroy(player, 'seek', self._on_player_seek)
connect_destroy(player, 'song-started', self._on_song_started)
connect_destroy(player, 'song-ended', self._on_song_ended)
connect_destroy(player, 'notify::seekable', self._on_seekable_changed)
connect_destroy(library, 'changed', self._on_song_changed)
self.connect('destroy', self._on_destroy)
def _create_waveform(self, song):
if not song.is_file or not self._waveform_scale.get_realized():
return
# Close any existing pipeline to avoid leaks
self._clean_pipeline()
command_template = """
uridecodebin name=uridec
! audioconvert
! level name=audiolevel interval={} post-messages=true
! fakesink sync=false"""
interval = int(song("~#length") * 1E9 / self._waveform_scale.width)
print_d("Computing data for each %.3f seconds" % (interval / 1E9))
command = command_template.format(interval)
pipeline = Gst.parse_launch(command)
pipeline.get_by_name("uridec").set_property("uri", song("~uri"))
bus = pipeline.get_bus()
self._bus_id = bus.connect("message", self._on_bus_message)
bus.add_signal_watch()
pipeline.set_state(Gst.State.PLAYING)
self._pipeline = pipeline
self._new_rms_vals = []
def _clean_pipeline(self):
if hasattr(self, "_pipeline") and self._pipeline:
self._pipeline.set_state(Gst.State.NULL)
if self._bus_id:
bus = self._pipeline.get_bus()
bus.remove_signal_watch()
bus.disconnect(self._bus_id)
self._bus_id = None
if self._pipeline:
self._pipeline = None
def _update_redraw_interval(self, *args):
if self._player.info and self.is_visible():
# Must be recomputed when size is changed
interval = self._waveform_scale.compute_redraw_interval()
self._redraw_tracker.set_interval(interval)
def _on_bus_message(self, bus, message):
if message.type == Gst.MessageType.ERROR:
error, debug = message.parse_error()
print_d("Error received from element {name}: {error}".format(
name=message.src.get_name(), error=error))
print_d("Debugging information: {}".format(debug))
elif message.type == Gst.MessageType.ELEMENT:
structure = message.get_structure()
if structure.get_name() == "level":
rms_db = structure.get_value("rms")
if rms_db:
# Calculate average of all channels (usually 2)
rms_db_avg = sum(rms_db) / len(rms_db)
# Normalize dB value to value between 0 and 1
rms = pow(10, (rms_db_avg / 20))
self._new_rms_vals.append(rms)
else:
print_w("Got unexpected message of type {}"
.format(message.type))
elif message.type == Gst.MessageType.EOS:
self._clean_pipeline()
# Update the waveform with the new data
self._rms_vals = self._new_rms_vals
self._waveform_scale.reset(self._rms_vals)
self._waveform_scale.set_placeholder(False)
self._update_redraw_interval()
# Clear temporary reference to the waveform data
del self._new_rms_vals
def _on_size_change(self, widget, allocation):
self._update()
if self._player.info:
self._create_waveform(self._player.info)
def _on_destroy(self, *args):
self._clean_pipeline()
self._label_tracker.destroy()
self._redraw_tracker.destroy()
def _on_tick_label(self, tracker):
if self.is_visible():
self._update_label()
def _on_tick_waveform(self, tracker):
if self.is_visible():
self._update_waveform()
def _on_seekable_changed(self, player, *args):
self._update_label()
def _on_player_seek(self, player, song, ms):
self._update()
def _on_song_changed(self, library, songs):
if not self._player.info:
return
# Check that the currently playing song has changed
if self._player.info in songs:
# Trigger a re-computation of the waveform
self._create_waveform(self._player.info)
self._resize_labels(self._player.info)
# Only update the label if some tag value changed
self._update_label()
def _on_song_started(self, player, song):
if self._player.info:
# Trigger a re-computation of the waveform
self._create_waveform(self._player.info)
self._resize_labels(self._player.info)
self._waveform_scale.set_placeholder(True)
self._update(True)
def _on_song_ended(self, player, song, ended):
self._update()
def _update(self, full_redraw=False):
self._update_label()
self._update_waveform(full_redraw)
def _update_label(self):
if self._player.info:
if self._hovering:
# Show the position pointed by the mouse
position = self._waveform_scale.get_mouse_position()
else:
# Show the position of the self._player (converted in seconds)
position = self._player.get_position() / 1000.0
length = self._player.info("~#length")
remaining = length - position
self._elapsed_label.set_time(position)
self._remaining_label.set_time(remaining)
self._elapsed_label.set_disabled(not self._player.seekable)
self._remaining_label.set_disabled(not self._player.seekable)
self.set_sensitive(self._player.seekable)
else:
self._remaining_label.set_disabled(True)
self._elapsed_label.set_disabled(True)
self.set_sensitive(False)
def _update_waveform(self, full_redraw=False):
if self._player.info:
# Position in ms, length in seconds
position = self._player.get_position() / 1000.0
length = self._player.info("~#length")
if length != 0:
self._waveform_scale.set_position(position / length)
else:
print_d("Length reported as zero for %s" % self._player.info)
self._waveform_scale.set_position(0)
if (position == 0 or full_redraw
or self._waveform_scale.is_placeholder()):
# if the placeholder flag is set this means that the source is
# most probably not a local file and has thus no waveform
# In that case we want a full redraw
self._waveform_scale.queue_draw()
else:
(x, y, w, h) = self._waveform_scale.compute_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.set_placeholder(True)
self._waveform_scale.queue_draw()
def _on_mouse_hover(self, _, event):
def clamp(a, x, b):
'''Return x if a <= x <= b, else the a or b nearest to x.'''
return min(max(x, a), b)
width = self._waveform_scale.get_allocation().width
self._waveform_scale.set_mouse_x_position(clamp(0, event.x, width))
if self._hovering:
(x, y, w, h) = self._waveform_scale.compute_hover_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.queue_draw()
self._update_label()
self._hovering = True
def _on_mouse_leave(self, _, event):
self._waveform_scale.set_mouse_x_position(-1)
self._waveform_scale.queue_draw()
self._hovering = False
self._update_label()
def _resize_labels(self, song):
"""Resize the labels to make sure there is enough space to display the
length of the songs.
This prevents the waveform from changing size when the position changes
from 9:59 to 10:00 for example."""
length = util.format_time_display(song("~#length"))
# Get the width needed to display the length of the song (the text
# displayed in the labels will always be shorter than that)
layout = self._remaining_label.get_layout()
layout.set_text(length, -1)
width, height = layout.get_pixel_size()
# Set it as the minimum width of the labels to prevent them from
# changing width
self._remaining_label.set_size_request(width, -1)
self._elapsed_label.set_size_request(width, -1)
def update_colors(self):
self._waveform_scale.update_colors()
class WaveformSeekBar(Gtk.Box):
"""A widget containing labels and the seekbar."""
def __init__(self, player, library):
super(WaveformSeekBar, self).__init__()
self._player = player
self._rms_vals = []
self._elapsed_label = TimeLabel()
self._remaining_label = TimeLabel()
self._waveform_scale = WaveformScale(player)
self.pack_start(Align(self._elapsed_label, border=6), False, True, 0)
self.pack_start(self._waveform_scale, True, True, 0)
self.pack_start(Align(self._remaining_label, border=6), False, True, 0)
for child in self.get_children():
child.show_all()
self._waveform_scale.connect('size-allocate',
self._update_redraw_interval)
self._label_tracker = TimeTracker(player)
self._label_tracker.connect('tick', self._on_tick_label, player)
self._redraw_tracker = TimeTracker(player)
self._redraw_tracker.connect('tick', self._on_tick_waveform, player)
connect_destroy(player, 'seek', self._on_player_seek)
connect_destroy(player, 'song-started', self._on_song_started)
connect_destroy(player, 'song-ended', self._on_song_ended)
connect_destroy(player, 'notify::seekable', self._on_seekable_changed)
connect_destroy(library, 'changed', self._on_song_changed, player)
self.connect('destroy', self._on_destroy)
self._update(player)
if player.info:
self._create_waveform(player.info, CONFIG.max_data_points)
def _create_waveform(self, song, points):
# Close any existing pipeline to avoid leaks
self._clean_pipeline()
command_template = """
filesrc name=fs
! decodebin ! audioconvert
! level name=audiolevel interval={} post-messages=true
! fakesink sync=false"""
interval = int(song("~#length") * 1E9 / points)
print_d("Computing data for each %.3f seconds" % (interval / 1E9))
command = command_template.format(interval)
pipeline = Gst.parse_launch(command)
pipeline.get_by_name("fs").set_property("location", song("~filename"))
bus = pipeline.get_bus()
self._bus_id = bus.connect("message", self._on_bus_message)
bus.add_signal_watch()
pipeline.set_state(Gst.State.PLAYING)
self._pipeline = pipeline
self._new_rms_vals = []
def _on_bus_message(self, bus, message):
if message.type == Gst.MessageType.ERROR:
error, debug = message.parse_error()
print_d("Error received from element {name}: {error}".format(
name=message.src.get_name(), error=error))
print_d("Debugging information: {}".format(debug))
elif message.type == Gst.MessageType.ELEMENT:
structure = message.get_structure()
if structure.get_name() == "level":
rms_db = structure.get_value("rms")
# Calculate average of all channels (usually 2)
rms_db_avg = sum(rms_db) / len(rms_db)
# Normalize dB value to value between 0 and 1
rms = pow(10, (rms_db_avg / 20))
self._new_rms_vals.append(rms)
else:
print_w("Got unexpected message of type {}"
.format(message.type))
elif message.type == Gst.MessageType.EOS:
self._clean_pipeline()
# Update the waveform with the new data
self._rms_vals = self._new_rms_vals
self._waveform_scale.reset(self._rms_vals)
self._waveform_scale.set_placeholder(False)
self._update_redraw_interval()
# Clear temporary reference to the waveform data
del self._new_rms_vals
def _clean_pipeline(self):
if hasattr(self, "_pipeline") and self._pipeline:
self._pipeline.set_state(Gst.State.NULL)
if self._bus_id:
bus = self._pipeline.get_bus()
bus.remove_signal_watch()
bus.disconnect(self._bus_id)
self._bus_id = None
if self._pipeline:
self._pipeline = None
def _update_redraw_interval(self, *args):
if self._player.info and self.is_visible():
# Must be recomputed when size is changed
interval = self._waveform_scale.compute_redraw_interval()
self._redraw_tracker.set_interval(interval)
def _on_destroy(self, *args):
self._clean_pipeline()
self._label_tracker.destroy()
self._redraw_tracker.destroy()
def _on_tick_label(self, tracker, player):
self._update_label(player)
def _on_tick_waveform(self, tracker, player):
self._update_waveform(player)
def _on_seekable_changed(self, player, *args):
self._update_label(player)
def _on_player_seek(self, player, song, ms):
self._update(player)
def _on_song_changed(self, library, songs, player):
if not player.info:
return
if not player.info.is_file:
print_d("%s is not a local file, skipping waveform calculation."
% player.info("~filename"))
return
# Check that the currently playing song has changed
if player.info in songs:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
# Only update the label if some tag value changed
self._update_label(player)
def _on_song_started(self, player, song):
if player.info and player.info.is_file:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
self._waveform_scale.set_placeholder(True)
self._update(player, True)
def _on_song_ended(self, player, song, ended):
self._update(player)
def _update(self, player, full_redraw=False):
self._update_label(player)
self._update_waveform(player, full_redraw)
def _update_label(self, player):
if player.info:
# Position in ms, length in seconds
position = player.get_position() / 1000.0
length = player.info("~#length")
remaining = length - position
self._elapsed_label.set_time(position)
self._remaining_label.set_time(remaining)
self._elapsed_label.set_disabled(not player.seekable)
self._remaining_label.set_disabled(not player.seekable)
self.set_sensitive(player.seekable)
else:
self._remaining_label.set_disabled(True)
self._elapsed_label.set_disabled(True)
self.set_sensitive(False)
def _update_waveform(self, player, full_redraw=False):
if player.info:
# Position in ms, length in seconds
position = player.get_position() / 1000.0
length = player.info("~#length")
if length != 0:
self._waveform_scale.set_position(position / length)
else:
print_d("Length reported as zero for %s" % player.info)
self._waveform_scale.set_position(0)
if position == 0 or full_redraw:
self._waveform_scale.queue_draw()
else:
(x, y, w, h) = self._waveform_scale.compute_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.set_placeholder(True)
self._waveform_scale.queue_draw()
class WaveformSeekBar(Gtk.Box):
"""A widget containing labels and the seekbar."""
def __init__(self, player, library):
super(WaveformSeekBar, self).__init__()
self._player = player
self._rms_vals = []
self._elapsed_label = TimeLabel()
self._remaining_label = TimeLabel()
self._waveform_scale = WaveformScale(player)
self.pack_start(Align(self._elapsed_label, border=6), False, True, 0)
self.pack_start(self._waveform_scale, True, True, 0)
self.pack_start(Align(self._remaining_label, border=6), False, True, 0)
for child in self.get_children():
child.show_all()
self._waveform_scale.connect('size-allocate',
self._update_redraw_interval)
self._label_tracker = TimeTracker(player)
self._label_tracker.connect('tick', self._on_tick_label, player)
self._redraw_tracker = TimeTracker(player)
self._redraw_tracker.connect('tick', self._on_tick_waveform, player)
connect_destroy(player, 'seek', self._on_player_seek)
connect_destroy(player, 'song-started', self._on_song_started)
connect_destroy(player, 'song-ended', self._on_song_ended)
connect_destroy(player, 'notify::seekable', self._on_seekable_changed)
connect_destroy(library, 'changed', self._on_song_changed, player)
self.connect('destroy', self._on_destroy)
self._update(player)
if player.info:
self._create_waveform(player.info, CONFIG.max_data_points)
def _create_waveform(self, song, points):
# Close any existing pipelines to avoid warnings
if hasattr(self, "_pipeline") and self._pipeline:
self._pipeline.set_state(Gst.State.NULL)
self._clean_pipeline()
command_template = """
filesrc name=fs
! decodebin ! audioconvert
! level name=audiolevel interval={} post-messages=true
! fakesink sync=false"""
interval = int(song("~#length") * 1E9 / points)
print_d("Computing data for each %.3f seconds" % (interval / 1E9))
command = command_template.format(interval)
pipeline = Gst.parse_launch(command)
pipeline.get_by_name("fs").set_property("location", song("~filename"))
bus = pipeline.get_bus()
self._bus_id = bus.connect("message", self._on_bus_message)
bus.add_signal_watch()
pipeline.set_state(Gst.State.PLAYING)
self._pipeline = pipeline
self._new_rms_vals = []
def _on_bus_message(self, bus, message):
if message.type == Gst.MessageType.ERROR:
error, debug = message.parse_error()
print_d("Error received from element {name}: {error}".format(
name=message.src.get_name(), error=error))
print_d("Debugging information: {}".format(debug))
elif message.type == Gst.MessageType.ELEMENT:
structure = message.get_structure()
if structure.get_name() == "level":
rms_db = structure.get_value("rms")
# Calculate average of all channels (usually 2)
rms_db_avg = sum(rms_db) / len(rms_db)
# Normalize dB value to value between 0 and 1
rms = pow(10, (rms_db_avg / 20))
self._new_rms_vals.append(rms)
else:
print_w("Got unexpected message of type {}".format(
message.type))
elif message.type == Gst.MessageType.EOS:
self._pipeline.set_state(Gst.State.NULL)
self._clean_pipeline()
# Only update the waveform if it has changed
if self._player.info and self._rms_vals != self._new_rms_vals:
self._rms_vals = self._new_rms_vals
self._waveform_scale.reset(self._rms_vals)
self._waveform_scale.set_placeholder(False)
self._update_redraw_interval()
else:
del self._new_rms_vals
def _clean_pipeline(self):
if self._bus_id:
bus = self._pipeline.get_bus()
bus.remove_signal_watch()
bus.disconnect(self._bus_id)
self._bus_id = None
if self._pipeline:
self._pipeline = None
def _update_redraw_interval(self, *args):
if self._player.info:
# Must be recomputed when size is changed
interval = self._waveform_scale.compute_redraw_interval()
self._redraw_tracker.set_interval(interval)
def _on_destroy(self, *args):
self._label_tracker.destroy()
self._redraw_tracker.destroy()
def _on_tick_label(self, tracker, player):
self._update_label(player)
def _on_tick_waveform(self, tracker, player):
self._update_waveform(player)
def _on_seekable_changed(self, player, *args):
self._update_label(player)
def _on_player_seek(self, player, song, ms):
self._update(player)
def _on_song_changed(self, library, songs, player):
# Check that the currently playing song has changed
if player.info and player.info in songs:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
# Only update the label if some tag value changed
self._update_label(player)
def _on_song_started(self, player, song):
if player.info:
# Trigger a re-computation of the waveform
self._create_waveform(player.info, CONFIG.max_data_points)
self._waveform_scale.set_placeholder(True)
self._update(player, True)
def _on_song_ended(self, player, song, ended):
self._update(player)
def _update(self, player, full_redraw=False):
self._update_label(player)
self._update_waveform(player, full_redraw)
def _update_label(self, player):
if player.info:
# Position in ms, length in seconds
position = player.get_position() / 1000.0
length = player.info("~#length")
remaining = length - position
self._elapsed_label.set_time(position)
self._remaining_label.set_time(remaining)
self._elapsed_label.set_disabled(not player.seekable)
self._remaining_label.set_disabled(not player.seekable)
self.set_sensitive(player.seekable)
else:
self._remaining_label.set_disabled(True)
self._elapsed_label.set_disabled(True)
self.set_sensitive(False)
def _update_waveform(self, player, full_redraw=False):
if player.info:
# Position in ms, length in seconds
position = player.get_position() / 1000.0
length = player.info("~#length")
if length != 0:
self._waveform_scale.set_position(position / length)
else:
print_d("Length reported as zero for %s" % player.info)
self._waveform_scale.set_position(0)
if position == 0 or full_redraw:
self._waveform_scale.queue_draw()
else:
(x, y, w, h) = self._waveform_scale.compute_redraw_area()
self._waveform_scale.queue_draw_area(x, y, w, h)
else:
self._waveform_scale.set_placeholder(True)
self._waveform_scale.queue_draw()
class MatrixOrbitalLCD(EventPlugin):
PLUGIN_ID = "MatrixOrbitalLCD"
PLUGIN_NAME = "Matrix Orbital LCD"
PLUGIN_DESC = _("Print info to a Matrix Orbital MX2/MX3 LCD.")
PLUGIN_ICON = Icons.UTILITIES_TERMINAL
PLUGIN_VERSION = "1.0"
def align_text2bytes(self, text,
h_align=Alignment.CENTER, v_align=Alignment.TOP):
if (h_align == Alignment.LEFT):
index = 1
elif (h_align == Alignment.RIGHT):
index = max(CONFIG.lcd_width - len(text) + 1, 1)
elif (h_align == Alignment.CENTER):
index = floor((int(CONFIG.lcd_width) - len(text)) / 2) + 1
alignment = b"\xFEG" + bytes(chr(index), "utf8")
if v_align == Alignment.TOP:
alignment += b"\x01"
elif v_align == Alignment.BOTTOM:
alignment += b"\x02"
return alignment + bytes(text, "utf8")
def reset_lcd(self):
# Empty LCD screen (X) and send cursor home (H).
self.write_bytes(b"\xFEX\xFEH")
def write_bytes(self, text):
self._dev.write(text)
def write_header_with_text(self, text=""):
self.reset_lcd()
self._write_header()
self.write_bytes(
self.align_text2bytes(text, Alignment.CENTER, Alignment.BOTTOM))
def _write_header(self, header="Quod Libet"):
self.write_bytes(self.align_text2bytes(header))
def PluginPreferences(self, parent):
def _path_changed(entry):
CONFIG.lcd_dev = entry.get_text()
def _width_changed(entry):
try:
CONFIG.lcd_width = int(entry.get_text())
except:
CONFIG.lcd_width = 20
def _interval_changed(entry):
try:
CONFIG.lcd_interval = int(entry.get_text())
except:
CONFIG.lcd_interval = 150
label = Gtk.Label(label=_("LCD serial device path:"))
hbox = Gtk.HBox()
hbox.pack_start(label, False, True, 6)
entry = Gtk.Entry()
entry.set_text(CONFIG.lcd_dev)
entry.connect("changed", _path_changed)
hbox.pack_start(entry, True, True, 6)
vbox = Gtk.VBox()
vbox.pack_start(hbox, False, True, 6)
label = Gtk.Label(label=_("LCD device width (characters):"))
hbox = Gtk.HBox()
hbox.pack_start(label, False, True, 6)
entry = Gtk.Entry()
entry.set_text(CONFIG.lcd_width)
entry.connect("changed", _width_changed)
hbox.pack_start(entry, True, True, 6)
vbox.pack_start(hbox, True, True, 0)
label = Gtk.Label(label=_("LCD update interval (ms):"))
hbox = Gtk.HBox()
hbox.pack_start(label, False, True, 6)
entry = Gtk.Entry()
entry.set_text(CONFIG.lcd_interval)
entry.connect("changed", _interval_changed)
hbox.pack_start(entry, True, True, 6)
vbox.pack_start(hbox, True, True, 6)
return vbox
def _failed_initialization(self):
if not hasattr(self, "_dev"):
print_e("Matrix Orbital LCD plugin not initialized correctly.")
return True
return False
def enabled(self):
if system() != "Linux":
print_e(self.PLUGIN_NAME + " plugin requires a Linux environment.")
return
try:
self._dev = open(CONFIG.lcd_dev, 'wb', buffering=0)
except:
print_e("Matrix Orbital LCD device not found at " + CONFIG.lcd_dev)
return
self.reset_lcd()
# Ready horizontal bars.
self.write_bytes(b"\xFEh")
# Turn backlight on.
self.write_bytes(b"\xFEB\x00")
self._write_header()
self._npld = NowPlayingLCDData(self)
self._tracker = TimeTracker(app.player)
self._tracker.connect('tick', self._npld.on_tracker_tick)
self._tracker.set_interval(int(CONFIG.lcd_interval))
def disabled(self):
if self._failed_initialization():
return
self._tracker.destroy()
self.reset_lcd()
# Turn backlight off.
self.write_bytes(b"\xFEF")
def plugin_on_seek(self, song, msec):
if self._failed_initialization():
return
self.reset_lcd()
self._npld.prevent_update(1)
self._write_header(_("Seeking..."))
percent_played = int(round(msec / float(song.get("~#length", 0)) / 10))
# Draw a horizontal bar graph starting at column 1 on row 2
# to the right (0), with a length of 0-100 pixels.
self.write_bytes(b"\xFE\x7C\x01\x02\x00" +
bytes(chr(percent_played), "utf8"))
def plugin_on_song_started(self, song):
if self._failed_initialization() or song is None:
return
self._npld.reset()
self._npld.set_basic_info(song("artist"), song("title"))
self._npld.set_disc_info(song("album"),
song.get("discnumber"), song.get("tracknumber"))
self.reset_lcd()
def plugin_on_song_ended(self, song, stopped):
if self._failed_initialization():
return
self._npld.reset()
self.write_header_with_text(_("* not playing *"))
def plugin_on_paused(self):
if self._failed_initialization():
return
# No need to set pause for trackers manually.
self.write_header_with_text(_("* paused *"))
def plugin_on_unpaused(self):
if self._failed_initialization():
return
self._npld.set_forced_update()