| """Compute dataset statistics and write report.json.""" |
|
|
| from __future__ import annotations |
|
|
| import json |
| from collections import Counter |
| from dataclasses import dataclass, field, asdict |
| from pathlib import Path |
| from typing import Iterable, Sequence |
|
|
| from video_vec2wav2_tokenizer.utils.io import DatasetEntry, ensure_dir |
| from video_vec2wav2_tokenizer.utils.logging import get_logger |
|
|
| logger = get_logger(__name__) |
|
|
|
|
| @dataclass(slots=True) |
| class DatasetReport: |
| """Aggregate statistics over a generated dataset.""" |
|
|
| total_videos: int = 0 |
| total_audio_files: int = 0 |
| total_segments: int = 0 |
| total_duration: float = 0.0 |
| average_segment_length: float = 0.0 |
| language_distribution: dict[str, int] = field(default_factory=dict) |
|
|
| def to_dict(self) -> dict: |
| d = asdict(self) |
| d["total_duration"] = round(self.total_duration, 3) |
| d["average_segment_length"] = round(self.average_segment_length, 3) |
| return d |
|
|
|
|
| def build_report( |
| entries: Sequence[DatasetEntry], |
| *, |
| total_videos: int, |
| total_audio_files: int, |
| ) -> DatasetReport: |
| """Aggregate per-segment entries into a :class:`DatasetReport`.""" |
| total_segments = len(entries) |
| total_duration = sum(e.duration for e in entries) |
| languages = Counter(e.language for e in entries if e.language) |
|
|
| return DatasetReport( |
| total_videos=total_videos, |
| total_audio_files=total_audio_files, |
| total_segments=total_segments, |
| total_duration=total_duration, |
| average_segment_length=(total_duration / total_segments) if total_segments else 0.0, |
| language_distribution=dict(languages), |
| ) |
|
|
|
|
| def write_report(path: str | Path, report: DatasetReport) -> Path: |
| """Serialize a report to ``report.json``.""" |
| ensure_dir(Path(path).parent) |
| with Path(path).open("w", encoding="utf-8") as fh: |
| json.dump(report.to_dict(), fh, indent=2, ensure_ascii=False) |
| logger.info("Wrote report to %s", path) |
| return Path(path) |
|
|
