git.scottworley.com Git - srec/blob - srec.py

   1 # srec: A simple GUI for screen recording
   2 #
   3 # This program is free software: you can redistribute it and/or modify it
   4 # under the terms of the GNU General Public License as published by the
   5 # Free Software Foundation, version 3.
   6
   7 import subprocess
   8 from typing import Callable
   9
  10 import gi
  11 gi.require_version("Gtk", "4.0")
  12 from gi.repository import Gtk  # nopep8 pylint: disable=wrong-import-position
  13
  14
  15 recording = None
  16
  17
  18 def on_start_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  19     global recording  # pylint: disable=global-statement
  20     assert recording is None
  21     screen_size = '1366x768'  # TODO
  22     command = [
  23             'ffmpeg',
  24             '-video_size', screen_size,
  25             '-framerate', '25',
  26             '-f', 'x11grab', '-i', ':0.0+0,0',
  27             '-f', 'pulse', '-ac', '2', '-i', 'default',
  28             'screen-recording.mkv']  # nopep8
  29     # pylint: disable=consider-using-with
  30     recording = subprocess.Popen(command, stdin=subprocess.PIPE)
  31     stack.set_visible_child_name("recording")
  32
  33
  34 def on_stop_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  35     global recording  # pylint: disable=global-statement
  36     assert recording is not None
  37     stdin = recording.stdin
  38     assert stdin is not None
  39     stdin.write(b'q')
  40     stdin.flush()
  41     recording.wait()
  42     recording = None
  43     stack.set_visible_child_name("not_recording")
  44
  45
  46 def make_button(label: str, action: Callable[[
  47                 Gtk.Button, Gtk.Stack], None], stack: Gtk.Stack) -> Gtk.Button:
  48     button = Gtk.Button(label=label)
  49     button.connect('clicked', action, stack)
  50     button.set_margin_top(10)
  51     button.set_margin_start(10)
  52     button.set_margin_end(10)
  53     button.set_margin_bottom(10)
  54     return button
  55
  56
  57 def on_activate(app: Gtk.Application) -> None:
  58     win = Gtk.ApplicationWindow(application=app)
  59     win.set_title('SRec')
  60     stack = Gtk.Stack()
  61
  62     start_recording = make_button("Start Recording", on_start_recording, stack)
  63     stack.add_named(start_recording, "not_recording")
  64
  65     box = Gtk.Box()
  66     box.set_orientation(Gtk.Orientation.VERTICAL)
  67     stop_recording = make_button("Stop Recording", on_stop_recording, stack)
  68     box.append(stop_recording)
  69     stack.add_named(box, "recording")
  70
  71     win.set_child(stack)
  72     win.present()
  73
  74
  75 def main() -> None:
  76     app = Gtk.Application(application_id='net.chkno.srec')
  77     app.connect('activate', on_activate)
  78     app.run(None)
  79
  80
  81 if __name__ == '__main__':
  82     main()