s6.utils.camera_capture

Shared synchronized multi-camera capture helpers.

class s6.utils.camera_capture.SyncStats(release_host_ts: float, oldest_frame_host_ts: float, newest_frame_host_ts: float, oldest_frame_age_sec: float, newest_frame_age_sec: float, bundle_host_skew_sec: float, seqs: List[int], gst_pts_ns: List[int | None])

Bases: object

Host-side timing stats for the most recent synchronized frame bundle.

release_host_ts: float

oldest_frame_host_ts: float

newest_frame_host_ts: float

oldest_frame_age_sec: float

newest_frame_age_sec: float

bundle_host_skew_sec: float

seqs: List[int]

gst_pts_ns: List[int | None]

class s6.utils.camera_capture.MultiCameraCapture(pipeline_sources: Sequence[Any], *, source_labels: Sequence[str] | None = None, api_preference: int = cv2.CAP_GSTREAMER, startup_timeout_sec: float = 5.0, stale_frame_timeout_sec: float = 1.0, fps_window_sec: float = 1.0, sync_recovery_fps_ratio_threshold: float = 0.5, sync_recovery_cooldown_sec: float = 0.25, backend: str = 'auto')

Bases: object

Threaded synchronized capture over multiple camera sources.

start() → None

stop() → None

get_synced_frames(*, timeout_sec: float = 1.0, max_seq_skew: int = 0, copy_frames: bool = True) → List[ndarray]

get_camera_fps() → List[float]

get_synced_fps() → float

get_last_sync_stats() → SyncStats | None

get_backend_name() → str