89 lines
2.4 KiB
Python
89 lines
2.4 KiB
Python
from PySide6.QtCore import QObject, QThread, QTimer, Signal, Slot
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from PySide6.QtGui import QImage, QPixmap
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import cv2
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from .base_camera import BaseCamera
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class CameraManager(QThread):
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frame_ready = Signal(QPixmap)
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photo_ready = Signal(QPixmap)
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error_occurred = Signal(str)
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def __init__(self, camera: BaseCamera, fps: int = 15, parent: QObject | None = None) -> None:
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super().__init__(parent)
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self.camera = camera
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self.fps = fps
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self.timer = None
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self.is_streaming = False
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self.is_connected = False
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self.timer = QTimer()
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self.timer.setInterval(int(1000 / self.fps))
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self.timer.timeout.connect(self._update_frame)
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self.start()
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def run(self) -> None:
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# self.timer = QTimer()
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# self.timer.setInterval(int(1000 / self.fps))
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# self.timer.timeout.connect(self._update_frame)
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self.exec()
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def start_camera(self) -> None:
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if self.is_connected:
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return
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if self.camera.connect():
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self.is_connected = True
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else:
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self.is_connected = False
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self.error_occurred.emit(self.camera.get_error_msg())
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def stop_camera(self) -> None:
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self.is_streaming = False
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self.is_connected = False
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if self.timer:
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self.timer.stop()
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self.camera.disconnect()
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def start_stream(self):
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if not self.is_connected:
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return
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if self.is_streaming:
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return
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if self.timer:
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self.is_streaming = True
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self.timer.start()
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def stop_stream(self) -> None:
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if self.is_streaming:
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self.is_streaming = False
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if self.timer:
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self.timer.stop()
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def _update_frame(self) -> None:
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if not self.is_streaming or not self.is_connected:
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return
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ret, frame = self.camera.get_frame()
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if not ret:
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self.error_occurred.emit(self.camera.get_error_msg())
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return
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if frame is not None:
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rgb_image = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
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h, w, ch = rgb_image.shape
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qimg = QImage(rgb_image.data, w, h, ch * w, QImage.Format.Format_RGB888)
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pixmap = QPixmap.fromImage(qimg)
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self.frame_ready.emit(pixmap)
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def stop(self):
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self.stop_camera()
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self.quit()
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self.wait()
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