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 from dataclasses import dataclass
   8 import subprocess
   9 from typing import Callable
  10
  11 import gi
  12 gi.require_version("Gtk", "4.0")
  13 from gi.repository import Gtk  # nopep8 pylint: disable=wrong-import-position
  14
  15
  16 @dataclass
  17 class Recording:
  18     process: subprocess.Popen[bytes]
  19
  20
  21 recording: Recording | None = None
  22
  23
  24 def on_start_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  25     global recording  # pylint: disable=global-statement
  26     assert recording is None
  27     screen_size = '1366x768'  # TODO
  28     command = [
  29             'ffmpeg',
  30             '-video_size', screen_size,
  31             '-framerate', '25',
  32             '-f', 'x11grab', '-i', ':0.0+0,0',
  33             '-f', 'pulse', '-ac', '2', '-i', 'default',
  34             'screen-recording.mkv']  # nopep8
  35     # pylint: disable=consider-using-with
  36     recording = Recording(
  37         process=subprocess.Popen(command, stdin=subprocess.PIPE))
  38     stack.set_visible_child_name("recording")
  39
  40
  41 def on_stop_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  42     global recording  # pylint: disable=global-statement
  43     assert recording is not None
  44     stdin = recording.process.stdin
  45     assert stdin is not None
  46     stdin.write(b'q')
  47     stdin.flush()
  48     recording.process.wait()
  49     recording = None
  50     stack.set_visible_child_name("not_recording")
  51
  52
  53 def make_button(label: str, action: Callable[[
  54                 Gtk.Button, Gtk.Stack], None], stack: Gtk.Stack) -> Gtk.Button:
  55     button = Gtk.Button(label=label)
  56     button.connect('clicked', action, stack)
  57     button.set_margin_top(10)
  58     button.set_margin_start(10)
  59     button.set_margin_end(10)
  60     button.set_margin_bottom(10)
  61     return button
  62
  63
  64 def on_activate(app: Gtk.Application) -> None:
  65     win = Gtk.ApplicationWindow(application=app)
  66     win.set_title('SRec')
  67     stack = Gtk.Stack()
  68
  69     start_recording = make_button("Start Recording", on_start_recording, stack)
  70     stack.add_named(start_recording, "not_recording")
  71
  72     box = Gtk.Box()
  73     box.set_orientation(Gtk.Orientation.VERTICAL)
  74     stop_recording = make_button("Stop Recording", on_stop_recording, stack)
  75     box.append(stop_recording)
  76     stack.add_named(box, "recording")
  77
  78     win.set_child(stack)
  79     win.present()
  80
  81
  82 def main() -> None:
  83     app = Gtk.Application(application_id='net.chkno.srec')
  84     app.connect('activate', on_activate)
  85     app.run(None)
  86
  87
  88 if __name__ == '__main__':
  89     main()