53 lines
2.1 KiB
Python
53 lines
2.1 KiB
Python
# Copyright 2021 (c) Anna Schumaker.
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from gi.repository import GObject
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from gi.repository import Gst
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class ReplayGainSink(Gst.Bin):
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def __init__(self):
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Gst.Bin.__init__(self)
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self.selector = Gst.ElementFactory.make("output-selector")
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self.funnel = Gst.ElementFactory.make("funnel")
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self.audiosink = Gst.ElementFactory.make("autoaudiosink")
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self.rgvolume = Gst.ElementFactory.make("rgvolume")
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self.rglimiter = Gst.ElementFactory.make("rglimiter")
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for element in [ self.selector, self.funnel, self.audiosink,
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self.rgvolume, self.rglimiter ]:
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self.add(element)
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# No ReplayGain: selector -> funnel -> audiosink
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self.shortcut = self.selector.get_request_pad("src_%u")
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self.shortcut.link(self.funnel.get_request_pad("sink_%u"))
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self.funnel.link(self.audiosink)
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# Replaygain: selector -> rgvolume -> rglimiter -> funnel -> audiosink
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self.replaygain = self.selector.get_request_pad("src_%u")
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self.replaygain.link(self.rgvolume.get_static_pad("sink"))
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self.rgvolume.link(self.rglimiter)
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self.rglimiter.get_static_pad("src").link(
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self.funnel.get_request_pad("sink_%u"))
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self.selector.set_property("pad-negotiation-mode", 1)
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self.selector.set_property("active-pad", self.shortcut)
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pad = self.selector.get_static_pad("sink")
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ghost = Gst.GhostPad.new("sink", pad)
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ghost.set_active(True)
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self.add_pad(ghost)
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@GObject.Property
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def mode(self):
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if self.selector.get_property("active-pad") == self.shortcut:
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return "disabled"
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album_mode = self.rgvolume.get_property("album-mode")
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return "album" if album_mode else "track"
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@mode.setter
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def mode(self, mode):
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if mode == "disabled":
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self.selector.set_property("active-pad", self.shortcut)
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else:
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self.rgvolume.set_property("album-mode", mode == "album")
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self.selector.set_property("active-pad", self.replaygain)
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