Iluvatar-mrv100 SDK 4.3.0

vllm/assets/video.py

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+# SPDX-License-Identifier: Apache-2.0
+
+from dataclasses import dataclass
+from functools import lru_cache
+from typing import Literal
+
+import cv2
+import numpy as np
+import numpy.typing as npt
+from huggingface_hub import hf_hub_download
+from PIL import Image
+
+from .base import get_cache_dir
+
+
+@lru_cache
+def download_video_asset(filename: str) -> str:
+    """
+    Download and open an image from huggingface
+    repo: raushan-testing-hf/videos-test
+    """
+    video_directory = get_cache_dir() / "video-example-data"
+    video_directory.mkdir(parents=True, exist_ok=True)
+
+    video_path = video_directory / filename
+    video_path_str = str(video_path)
+    if not video_path.exists():
+        video_path_str = hf_hub_download(
+            repo_id="raushan-testing-hf/videos-test",
+            filename=filename,
+            repo_type="dataset",
+            cache_dir=video_directory,
+        )
+    return video_path_str
+
+
+def video_to_ndarrays(path: str, num_frames: int = -1) -> npt.NDArray:
+    cap = cv2.VideoCapture(path)
+    if not cap.isOpened():
+        raise ValueError(f"Could not open video file {path}")
+
+    total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT))
+    frames = []
+
+    num_frames = num_frames if num_frames > 0 else total_frames
+    frame_indices = np.linspace(0, total_frames - 1, num_frames, dtype=int)
+    for idx in range(total_frames):
+        ok = cap.grab()  # next img
+        if not ok:
+            break
+        if idx in frame_indices:  # only decompress needed
+            ret, frame = cap.retrieve()
+            if ret:
+                frames.append(frame)
+
+    frames = np.stack(frames)
+    if len(frames) < num_frames:
+        raise ValueError(f"Could not read enough frames from video file {path}"
+                         f" (expected {num_frames} frames, got {len(frames)})")
+    return frames
+
+
+def video_to_pil_images_list(path: str,
+                             num_frames: int = -1) -> list[Image.Image]:
+    frames = video_to_ndarrays(path, num_frames)
+    return [
+        Image.fromarray(cv2.cvtColor(frame, cv2.COLOR_BGR2RGB))
+        for frame in frames
+    ]
+
+
+@dataclass(frozen=True)
+class VideoAsset:
+    name: Literal["sample_demo_1.mp4"]
+    num_frames: int = -1
+
+    @property
+    def pil_images(self) -> list[Image.Image]:
+        video_path = download_video_asset(self.name)
+        ret = video_to_pil_images_list(video_path, self.num_frames)
+        return ret
+
+    @property
+    def np_ndarrays(self) -> npt.NDArray:
+        video_path = download_video_asset(self.name)
+        ret = video_to_ndarrays(video_path, self.num_frames)
+        return ret