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47 lines
1.5 KiB
47 lines
1.5 KiB
#!/usr/bin/env python3
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import subprocess
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import i3ipc
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import psutil
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import pulsectl
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def main():
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i3 = i3ipc.Connection()
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window = i3.get_tree().find_focused()
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cmd = ['xprop', '-id', str(window.window), '_NET_WM_PID']
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o = subprocess.run(cmd, encoding='utf-8', capture_output=True)
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# _NET_WM_PID(CARDINAL) = 418472
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pid = int(o.stdout.strip().split(' = ')[1])
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pulse = pulsectl.Pulse('Focused sink switcher')
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sink_input_by_pid = {}
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for i in pulse.sink_input_list():
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sink_pid = int(i.proplist['application.process.id'])
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sink_input_by_pid[sink_pid] = i
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if pid in sink_input_by_pid:
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sink_input = sink_input_by_pid[pid]
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else:
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# try the childprocesses of our process, because this might be a
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# terminal having started an mpv or something
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p = psutil.Process(pid)
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for child in p.children(recursive=True):
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if child.pid in sink_input_by_pid:
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sink_input = sink_input_by_pid[child.pid]
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break
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else:
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msg = 'Did not find a pulse client for pid {} or its children.'
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raise RuntimeError(msg.format(pid))
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sink_index_list = [s.index for s in pulse.sink_list()]
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old_sink = sink_input.sink
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old_sink_index = sink_index_list.index(old_sink)
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new_sink_index = sink_index_list[(old_sink_index + 1) % len(sink_index_list)]
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pulse.sink_input_move(sink_input.index, new_sink_index)
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if __name__ == '__main__':
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main()
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