Make GUI control for webcam sharing

[srec] / srec.py

diff --git a/srec.py b/srec.py
index 36000c92019c20a196cd7853d412a12633c66876..4a9d5b95fdbb96ee39ed1cd207d10509aab60ed4 100644 (file)
--- a/srec.py
+++ b/srec.py
@@ -4,6 +4,9 @@
 # under the terms of the GNU General Public License as published by the
 # Free Software Foundation, version 3.
 
+from dataclasses import dataclass
+from datetime import datetime
+import os
 import subprocess
 from typing import Callable
 
@@ -12,33 +15,51 @@ gi.require_version("Gtk", "4.0")
 from gi.repository import Gtk  # nopep8 pylint: disable=wrong-import-position
 
 
-recording = None
+@dataclass
+class Recording:
+    filename: str
+    process: subprocess.Popen[bytes]
+
+
+recording: Recording | None = None
+
+
+def make_filename() -> str:
+    directory = os.environ.get(
+        'XDG_VIDEOS_DIR',
+        os.path.expanduser('~/Videos/SRec'))
+    os.makedirs(directory, exist_ok=True)
+    timestamp = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
+    return os.path.join(directory, f'srec {timestamp}.mkv')
+
+
+def video_source(stack: Gtk.Stack) -> list[str]:
+    if stack.get_child_by_name('not_recording').get_first_child().get_active():
+        return ['-f', 'x11grab', '-i', ':0.0+0,0']
+    return ['-f', 'v4l2', '-i', '/dev/video0']
 
 
 def on_start_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
     global recording  # pylint: disable=global-statement
     assert recording is None
-    screen_size = '1366x768'  # TODO
-    command = [
-            'ffmpeg',
-            '-video_size', screen_size,
-            '-framerate', '25',
-            '-f', 'x11grab', '-i', ':0.0+0,0',
-            '-f', 'pulse', '-ac', '2', '-i', 'default',
-            'screen-recording.mkv']  # nopep8
+    filename = make_filename()
+    command = (['ffmpeg', '-framerate', '25'] + video_source(stack) +
+               ['-f', 'pulse', '-ac', '2', '-i', 'default', filename])
     # pylint: disable=consider-using-with
-    recording = subprocess.Popen(command, stdin=subprocess.PIPE)
+    recording = Recording(
+        filename=filename,
+        process=subprocess.Popen(command, stdin=subprocess.PIPE))
     stack.set_visible_child_name("recording")
 
 
 def on_stop_recording(_: Gtk.Button, stack: Gtk.Stack) -> None:
     global recording  # pylint: disable=global-statement
     assert recording is not None
-    stdin = recording.stdin
+    stdin = recording.process.stdin
     assert stdin is not None
     stdin.write(b'q')
     stdin.flush()
-    recording.wait()
+    recording.process.wait()
     recording = None
     stack.set_visible_child_name("not_recording")
 
@@ -54,19 +75,34 @@ def make_button(label: str, action: Callable[[
     return button
 
 
+def make_share_control() -> Gtk.CheckButton:
+    can_share = os.path.exists('/sys/module/v4l2looback')
+    control = Gtk.CheckButton(
+        label='Share Webcam', sensitive=can_share, active=can_share)
+    control.set_margin_start(20)
+    return control
+
+
 def on_activate(app: Gtk.Application) -> None:
     win = Gtk.ApplicationWindow(application=app)
     win.set_title('SRec')
-    stack = Gtk.Stack()
+    win.set_icon_name('srec')
 
-    start_recording = make_button("Start Recording", on_start_recording, stack)
-    stack.add_named(start_recording, "not_recording")
+    stack = Gtk.Stack()
 
-    box = Gtk.Box()
-    box.set_orientation(Gtk.Orientation.VERTICAL)
-    stop_recording = make_button("Stop Recording", on_stop_recording, stack)
-    box.append(stop_recording)
-    stack.add_named(box, "recording")
+    nr_box = Gtk.Box()
+    nr_box.set_orientation(Gtk.Orientation.VERTICAL)
+    screen = Gtk.CheckButton(label='Screen')
+    nr_box.append(screen)
+    nr_box.append(Gtk.CheckButton(label='Webcam', active=True, group=screen))
+    nr_box.append(make_share_control())
+    nr_box.append(make_button("Start Recording", on_start_recording, stack))
+    stack.add_named(nr_box, "not_recording")
+
+    r_box = Gtk.Box()
+    r_box.set_orientation(Gtk.Orientation.VERTICAL)
+    r_box.append(make_button("Stop Recording", on_stop_recording, stack))
+    stack.add_named(r_box, "recording")
 
     win.set_child(stack)
     win.present()