From 97cc5f385f0d0995c8e06be3aad5a857075362af Mon Sep 17 00:00:00 2001
From: Avasam <samuel.06@hotmail.com>
Date: Sat, 9 Mar 2024 00:37:04 -0500
Subject: [PATCH 1/2] wip, create CaptureMethodSignal

---
 src/capture_method/__init__.py | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/capture_method/__init__.py b/src/capture_method/__init__.py
index 0e26596e..cd96562b 100644
--- a/src/capture_method/__init__.py
+++ b/src/capture_method/__init__.py
@@ -4,11 +4,14 @@
 import os
 import sys
 from collections import OrderedDict
+from collections.abc import Callable
 from dataclasses import dataclass
 from enum import Enum, EnumMeta, auto, unique
 from itertools import starmap
 from typing import TYPE_CHECKING, TypedDict, cast
 
+from cv2.typing import MatLike
+from PySide6 import QtCore
 from typing_extensions import Never, override
 
 from capture_method.CaptureMethodBase import CaptureMethodBase
@@ -253,3 +256,27 @@ async def get_camera_info(index: int, device_name: str):
         in await asyncio.gather(*starmap(get_camera_info, enumerate(named_video_inputs)))
         if camera_info is not None
     ]
+
+
+class CaptureMethodSignal(QtCore.QObject):
+    """Made to look like a `QtCore.SignalInstance`, but with safe `connect`/`disconnect` methods."""
+
+    __frame_signal = QtCore.Signal(object)
+
+    def subscribe_to_new_frame(self, slot: Callable[[MatLike | None], object]):
+        try:
+            return self.__frame_signal.connect(slot, QtCore.Qt.ConnectionType.UniqueConnection)
+        except RuntimeError:
+            pass
+
+    def unsubscribe_from_new_frame(self, slot: Callable[[MatLike | None], object]):
+        try:
+            self.__frame_signal.disconnect(slot)
+        except RuntimeError:
+            pass
+
+    def _push_new_frame_to_subscribers(self, __frame: MatLike | None):
+        return self.__frame_signal.emit(__frame)
+
+    def __init__(self):
+        super().__init__()

From f16b2250814755f26ccdc913a8403821a947df49 Mon Sep 17 00:00:00 2001
From: Avasam <samuel.06@hotmail.com>
Date: Sun, 20 Oct 2024 19:54:44 -0400
Subject: [PATCH 2/2] Use PEP 570 syntax for positional-only arguments

---
 src/capture_method/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/capture_method/__init__.py b/src/capture_method/__init__.py
index c9679a62..110d2a9b 100644
--- a/src/capture_method/__init__.py
+++ b/src/capture_method/__init__.py
@@ -243,8 +243,8 @@ def unsubscribe_from_new_frame(self, slot: Callable[[MatLike | None], object]):
         except RuntimeError:
             pass
 
-    def _push_new_frame_to_subscribers(self, __frame: MatLike | None):
-        return self.__frame_signal.emit(__frame)
+    def _push_new_frame_to_subscribers(self, frame: MatLike | None, /):
+        return self.__frame_signal.emit(frame)
 
     def __init__(self):
         super().__init__()