Implement Reolink PTZ Streamer GUI app (#78)

* stream gui start

* initial video stream gui with PTZ -- pan works, zoom broken

* stream gui: pan and zoom work, needs refinement

* stream gui: some improvements .latency still terrible and key repeat is a problem

* stream gui: fix autorepeat messing up commands

Includes minor cleanups for publication

* video_review_gui: disable SSL warnings

The camera uses a self-signed certificate so prevent the annoying
spamming.

Author: sven337

Diff for: examples/stream_gui.py

@@ -0,0 +1,175 @@
+import sys
+import os
+from configparser import RawConfigParser
+from PyQt6.QtWidgets import QApplication, QWidget, QVBoxLayout, QHBoxLayout, QSlider
+from PyQt6.QtMultimedia import QMediaPlayer, QAudioOutput
+from PyQt6.QtMultimediaWidgets import QVideoWidget
+from PyQt6.QtCore import Qt, QUrl, QTimer
+from PyQt6.QtGui import QWheelEvent
+from reolinkapi import Camera
+from threading import Lock
+
+import urllib3
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
+def read_config(props_path: str) -> dict:
+    config = RawConfigParser()
+    assert os.path.exists(props_path), f"Path does not exist: {props_path}"
+    config.read(props_path)
+    return config
+
+class ZoomSlider(QSlider):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+
+    def keyPressEvent(self, event):
+        if event.key() in (Qt.Key.Key_Left, Qt.Key.Key_Right, Qt.Key.Key_Up, Qt.Key.Key_Down):
+            event.ignore()
+        else:
+            super().keyPressEvent(event)
+
+class CameraPlayer(QWidget):
+    def __init__(self, rtsp_url_wide, rtsp_url_telephoto, camera: Camera):
+        super().__init__()
+        self.setWindowTitle("Reolink PTZ Streamer")
+        self.setGeometry(10, 10, 1900, 600)
+        self.setFocusPolicy(Qt.FocusPolicy.StrongFocus) 
+
+        self.camera = camera
+        self.zoom_timer = QTimer(self)
+        self.zoom_timer.timeout.connect(self.stop_zoom)
+
+        # Create media players
+        self.media_player_wide = QMediaPlayer()
+        self.media_player_telephoto = QMediaPlayer()
+
+        # Create video widgets
+        self.video_widget_wide = QVideoWidget()
+        self.video_widget_telephoto = QVideoWidget()
+        self.media_player_wide.setVideoOutput(self.video_widget_wide)
+        self.media_player_telephoto.setVideoOutput(self.video_widget_telephoto)
+        self.video_widget_wide.wheelEvent = self.handle_wheel_event
+        self.video_widget_telephoto.wheelEvent = self.handle_wheel_event
+
+        # Create layout
+        layout = QHBoxLayout()
+        layout.addWidget(self.video_widget_wide, 2)
+        layout.addWidget(self.video_widget_telephoto, 2)
+        self.setLayout(layout)
+
+        # Start playing the streams
+        self.media_player_wide.setSource(QUrl(rtsp_url_wide))
+        self.media_player_telephoto.setSource(QUrl(rtsp_url_telephoto))
+        self.media_player_wide.play()
+        self.media_player_telephoto.play()
+
+
+    def keyPressEvent(self, event):
+        if event.isAutoRepeat():
+            return
+        if event.key() == Qt.Key.Key_Escape:
+            self.close()
+        elif event.key() in (Qt.Key.Key_Left, Qt.Key.Key_Right, Qt.Key.Key_Up, Qt.Key.Key_Down):
+            self.start_move(event.key())
+
+    def keyReleaseEvent(self, event):
+        if event.isAutoRepeat():
+            return
+        if event.key() in (Qt.Key.Key_Left, Qt.Key.Key_Right, Qt.Key.Key_Up, Qt.Key.Key_Down):
+            self.stop_move()
+
+    def start_move(self, key):
+        direction = {
+            Qt.Key.Key_Left: "left",
+            Qt.Key.Key_Right: "right",
+            Qt.Key.Key_Up: "up",
+            Qt.Key.Key_Down: "down"
+        }.get(key)
+
+        if direction:
+            self.move_camera(direction)
+
+    def stop_move(self):
+        response = self.camera.stop_ptz()
+        print("Stop PTZ")
+        if response[0].get('code') != 0:
+            self.show_error_message("Failed to stop camera movement", str(response[0]))
+
+    def move_camera(self, direction):
+        speed = 25
+        if direction == "left":
+            response = self.camera.move_left(speed)
+        elif direction == "right":
+            response = self.camera.move_right(speed)
+        elif direction == "up":
+            response = self.camera.move_up(speed)
+        elif direction == "down":
+            response = self.camera.move_down(speed)
+        else:
+            print(f"Invalid direction: {direction}")
+            return
+
+        if response[0].get('code') == 0:
+            print(f"Moving camera {direction}")
+        else:
+            self.show_error_message(f"Failed to move camera {direction}", str(response[0]))
+
+    def handle_wheel_event(self, event: QWheelEvent):
+        delta = event.angleDelta().y()
+        if delta > 0:
+            self.zoom_in()
+        elif delta < 0:
+            self.zoom_out()
+
+    def zoom_in(self):
+        self.start_zoom('in')
+
+    def zoom_out(self):
+        self.start_zoom('out')
+
+    def start_zoom(self, direction: str):
+        self.zoom_timer.stop()  # Stop any ongoing zoom timer
+        speed = 60  # You can adjust this value as needed
+        if direction == 'in':
+            response = self.camera.start_zooming_in(speed)
+        else:
+            response = self.camera.start_zooming_out(speed)
+        
+        if response[0].get('code') == 0:
+            print(f"Zooming {direction}")
+            self.zoom_timer.start(200)  # Stop zooming after 200ms
+        else:
+            self.show_error_message(f"Failed to start zooming {direction}", str(response[0]))
+
+    def stop_zoom(self):
+        response = self.camera.stop_zooming()
+        if response[0].get('code') != 0:
+            self.show_error_message("Failed to stop zooming", str(response[0]))
+
+    def show_error_message(self, title, message):
+        print(f"Error: {title} {message}")
+
+    def handle_error(self, error):
+        print(f"Media player error: {error}")
+
+
+if __name__ == '__main__':
+    # Read in your ip, username, & password from the configuration file
+    config = read_config('camera.cfg')
+    ip = config.get('camera', 'ip')
+    un = config.get('camera', 'username')
+    pw = config.get('camera', 'password')
+
+    # Connect to camera
+    cam = Camera(ip, un, pw, https=True)
+
+    rtsp_url_wide =      f"rtsp://{un}:{pw}@{ip}/Preview_01_sub"
+    rtsp_url_telephoto = f"rtsp://{un}:{pw}@{ip}/Preview_02_sub"
+
+    # Connect to camera
+    cam = Camera(ip, un, pw, https=True)
+
+    app = QApplication(sys.argv)
+    player = CameraPlayer(rtsp_url_wide, rtsp_url_telephoto, cam)
+    player.show()
+    sys.exit(app.exec())

Diff for: examples/video_review_gui.py

@@ -17,6 +17,9 @@
 from PyQt6.QtCore import Qt, QUrl, QTimer, QThread, pyqtSignal, QMutex
 from PyQt6.QtGui import QColor, QBrush, QFont
 
+import urllib3
+urllib3.disable_warnings(urllib3.exceptions.InsecureRequestWarning)
+
 def path_name_from_camera_path(fname):
    # Mp4Record/2024-08-12/RecM13_DST20240812_214255_214348_1F1E828_4DDA4D.mp4
    return fname.replace('/', '_')