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 os
   9 import subprocess
  10 from typing import Callable
  11
  12 import gi
  13 gi.require_version("Gtk", "4.0")
  14 from gi.repository import Gtk  # nopep8 pylint: disable=wrong-import-position
  15
  16
  17 @dataclass
  18 class Recording:
  19     filename: str
  20     process: subprocess.Popen[bytes]
  21
  22
  23 recording: Recording | None = None
  24
  25
  26 def make_filename() -> str:
  27     directory = os.environ.get(
  28         'XDG_VIDEOS_DIR',
  29         os.path.expanduser('~/Videos'))
  30     os.makedirs(directory, exist_ok=True)
  31     return os.path.join(directory, "screen-recording.mkv")
  32
  33
  34 def on_start_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  35     global recording  # pylint: disable=global-statement
  36     assert recording is None
  37     screen_size = '1366x768'  # TODO
  38     filename = make_filename()
  39     command = [
  40             'ffmpeg',
  41             '-video_size', screen_size,
  42             '-framerate', '25',
  43             '-f', 'x11grab', '-i', ':0.0+0,0',
  44             '-f', 'pulse', '-ac', '2', '-i', 'default',
  45             filename]  # nopep8
  46     # pylint: disable=consider-using-with
  47     recording = Recording(
  48         filename=filename,
  49         process=subprocess.Popen(command, stdin=subprocess.PIPE))
  50     stack.set_visible_child_name("recording")
  51
  52
  53 def on_stop_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  54     global recording  # pylint: disable=global-statement
  55     assert recording is not None
  56     stdin = recording.process.stdin
  57     assert stdin is not None
  58     stdin.write(b'q')
  59     stdin.flush()
  60     recording.process.wait()
  61     recording = None
  62     stack.set_visible_child_name("not_recording")
  63
  64
  65 def make_button(label: str, action: Callable[[
  66                 Gtk.Button, Gtk.Stack], None], stack: Gtk.Stack) -> Gtk.Button:
  67     button = Gtk.Button(label=label)
  68     button.connect('clicked', action, stack)
  69     button.set_margin_top(10)
  70     button.set_margin_start(10)
  71     button.set_margin_end(10)
  72     button.set_margin_bottom(10)
  73     return button
  74
  75
  76 def on_activate(app: Gtk.Application) -> None:
  77     win = Gtk.ApplicationWindow(application=app)
  78     win.set_title('SRec')
  79     stack = Gtk.Stack()
  80
  81     start_recording = make_button("Start Recording", on_start_recording, stack)
  82     stack.add_named(start_recording, "not_recording")
  83
  84     box = Gtk.Box()
  85     box.set_orientation(Gtk.Orientation.VERTICAL)
  86     stop_recording = make_button("Stop Recording", on_stop_recording, stack)
  87     box.append(stop_recording)
  88     stack.add_named(box, "recording")
  89
  90     win.set_child(stack)
  91     win.present()
  92
  93
  94 def main() -> None:
  95     app = Gtk.Application(application_id='net.chkno.srec')
  96     app.connect('activate', on_activate)
  97     app.run(None)
  98
  99
 100 if __name__ == '__main__':
 101     main()