102 lines
3.4 KiB
Python
102 lines
3.4 KiB
Python
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import math
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import threading
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from dataclasses import dataclass
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from typing import Optional, Union, Tuple, Set
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import numpy as np
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from platypush.plugins.camera.model.writer import StreamWriter, VideoWriter, FileVideoWriter
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from platypush.plugins.camera.model.writer.preview import PreviewWriter
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@dataclass
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class CameraInfo:
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device: Optional[Union[int, str]]
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resolution: Optional[Tuple[int, int]] = None
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color_transform: Optional[str] = None
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frames_dir: Optional[str] = None
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rotate: Optional[float] = None
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horizontal_flip: bool = False
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vertical_flip: bool = False
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scale_x: Optional[float] = None
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scale_y: Optional[float] = None
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warmup_frames: int = 0
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warmup_seconds: float = 0.
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capture_timeout: float = 20.0
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fps: Optional[float] = None
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grayscale: Optional[bool] = None
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video_type: Optional[str] = None
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stream_format: str = 'mjpeg'
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listen_port: Optional[int] = None
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bind_address: Optional[str] = None
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def set(self, **kwargs):
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for k, v in kwargs.items():
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setattr(self, k, v)
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def to_dict(self) -> dict:
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return {
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'device': self.device,
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'color_transform': self.color_transform,
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'frames_dir': self.frames_dir,
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'rotate': self.rotate,
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'horizontal_flip': self.horizontal_flip,
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'vertical_flip': self.vertical_flip,
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'scale_x': self.scale_x,
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'scale_y': self.scale_y,
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'warmup_frames': self.warmup_frames,
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'warmup_seconds': self.warmup_seconds,
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'capture_timeout': self.capture_timeout,
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'fps': self.fps,
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'grayscale': self.grayscale,
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'resolution': list(self.resolution or ()),
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'video_type': self.video_type,
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'stream_format': self.stream_format,
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'listen_port': self.listen_port,
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'bind_address': self.bind_address,
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}
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def clone(self):
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# noinspection PyArgumentList
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return self.__class__(**self.to_dict())
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@dataclass
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class Camera:
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info: CameraInfo
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start_event: threading.Event = threading.Event()
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stream_event: threading.Event = threading.Event()
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capture_thread: Optional[threading.Thread] = None
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stream_thread: Optional[threading.Thread] = None
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object = None
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stream: Optional[StreamWriter] = None
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preview: Optional[PreviewWriter] = None
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file_writer: Optional[FileVideoWriter] = None
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def get_outputs(self) -> Set[VideoWriter]:
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writers = set()
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# if self.preview and self.preview.is_alive():
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if self.preview and not self.preview.closed:
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writers.add(self.preview)
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if self.stream and not self.stream.closed:
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writers.add(self.stream)
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if self.file_writer and not self.file_writer.closed:
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writers.add(self.file_writer)
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return writers
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def effective_resolution(self) -> Tuple[int, int]:
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rot = (self.info.rotate or 0) * math.pi / 180
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sin = math.sin(rot)
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cos = math.cos(rot)
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scale = np.array([[self.info.scale_x or 1., self.info.scale_y or 1.]])
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resolution = np.array([[self.info.resolution[0], self.info.resolution[1]]])
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rot_matrix = np.array([[sin, cos], [cos, sin]])
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resolution = (scale * abs(np.cross(rot_matrix, resolution)))[0]
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return int(round(resolution[0])), int(round(resolution[1]))
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# vim:sw=4:ts=4:et:
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