Aliaksandr Kalenik febd85f417 LibMedia+LibWeb: Store decoded YUV data in video frames ...

Decoded video frames should own their planar YUV data and color space
directly. Keeping that storage behind ImmutableBitmap gave a
still-image abstraction media-specific behavior and made calls like
bitmap() potentially allocate and convert a whole video frame.

Move YUV ownership into Media::VideoFrame, where the lifetime naturally
follows media playback, and remove the YUV-backed mode from
ImmutableBitmap. This commit intentionally keeps the visible Web paint
path on ExternalContentSource by converting the current frame back to
an ImmutableBitmap where Web still expects one.

Callers that need pixels now ask the frame to convert explicitly. That
preserves behavior for canvas and bitmap consumers while making the
expensive YUV-to-pixel path visible at the call site instead of
hiding it behind ImmutableBitmap::bitmap().

2026-05-05 14:39:17 -05:00

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