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/SRec'))
  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 video_source(stack: Gtk.Stack) -> list[str]:
  37     if stack.get_child_by_name('not_recording').get_first_child().get_active():
  38         return ['-f', 'x11grab', '-i', ':0.0+0,0']
  39     return ['-f', 'v4l2', '-i', '/dev/video0']
  40
  41
  42 def on_start_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
  43     global recording  # pylint: disable=global-statement
  44     assert recording is None
  45     filename = make_filename()
  46     command = (['ffmpeg', '-framerate', '25'] + video_source(stack) +
  47                ['-f', 'pulse', '-ac', '2', '-i', 'default', filename])
  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     win.set_icon_name('srec')
  82
  83     stack = Gtk.Stack()
  84
  85     nr_box = Gtk.Box()
  86     nr_box.set_orientation(Gtk.Orientation.VERTICAL)
  87     screen = Gtk.CheckButton(label='Screen')
  88     nr_box.append(screen)
  89     nr_box.append(Gtk.CheckButton(label='Webcam', active=True, group=screen))
  90     nr_box.append(make_button("Start Recording", on_start_recording, stack))
  91     stack.add_named(nr_box, "not_recording")
  92
  93     r_box = Gtk.Box()
  94     r_box.set_orientation(Gtk.Orientation.VERTICAL)
  95     r_box.append(make_button("Stop Recording", on_stop_recording, stack))
  96     stack.add_named(r_box, "recording")
  97
  98     win.set_child(stack)
  99     win.present()
 100
 101
 102 def main() -> None:
 103     app = Gtk.Application(application_id='net.chkno.srec')
 104     app.connect('activate', on_activate)
 105     app.run(None)
 106
 107
 108 if __name__ == '__main__':
 109     main()