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