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Dylan M. Taylor 16564be34b craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

* craft-video: AV1 decoder from FilmCraft (`av1-decode` feature)

FilmCraft's crates/av1 at 4c0d2ad7 becomes craft_video::av1::decode. The encoder moves to
av1/encode and is still exported from craft_video::av1. Feature av1 now turns on av1-decode and
av1-encode, so either half can be built without the other.

The ignored speed tests no longer read the thread CPU clock (FilmCraft used rustix for it).
craft_video::budget (the picture memory budget from DeckCraft's bitstream crate) is added for the
next commit. craft-video is built at opt-level 3 in the dev profile, as FilmCraft built its
codecs.

* craft-video: AV1 decoder hardening from DeckCraft's copy

- The picture store (eight reference slots, the new frame, frames in flight) is checked against
  a memory budget before a frame is allocated; Decoder::set_memory_budget.
- Non-uniform tile spacing is refused past MAX_TILE_COLS columns or MAX_TILE_ROWS rows.

* craft-video: AV1 fuzz seeds are 64x64 so SVT-AV1 2.x can encode them

FilmCraft's seeds were 64x48; the SVT-AV1 2.3 on the Ubuntu runners refuses a source under 64
lines, and an encoder that exists but fails is a test failure, not a skip.

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examples

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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src

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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tests

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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tools

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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Cargo.toml

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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README.md

craft-video: AV1 decoder from FilmCraft, with DeckCraft's hardening (av1-decode) (#836 )

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README.md

craft-video

Clean-room pure-Rust video codecs for the Craft apps, one feature per codec: DNxHD/DNxHR, VP8, ProRes and H.264.

Input and output are byte slices and planar sample buffers; the crate opens no files itself and performs no filesystem I/O.
Implemented from published standards and RFCs (SMPTE ST 2019-1, RFC 6386, SMPTE RDD 36 and ITU-T H.264).
Tested against ffmpeg as an external oracle with roundtrips, hostile fuzzing, and conformance vectors. No unsafe, no panics on corrupt streams. Builds for wasm32-unknown-unknown.
Containers (MP4/MOV, Matroska/WebM), bit-level I/O (craft_media::bitstream) and shared identifiers (CodecId, CodecParams) come from craft-media.

Cargo features

No codec feature is on by default.

Feature	Module	Codec
`dnx`	`dnx`	Avid DNxHD / DNxHR (SMPTE ST 2019-1 VC-3): decoder and encoder
`apv`	`apv`	APV (Advanced Professional Video, RFC 9924): decoder (`apv-decode` alone) and encoder (`apv-encode` alone)
`vp8`	`vp8`	VP8 (RFC 6386): decoder
`mpeg2`	`mpeg2`	MPEG-2 video (ITU-T H.262) and MPEG-1 video (ISO/IEC 11172-2): decoder
`prores`	`prores`	Apple ProRes (SMPTE RDD 36): decoder and encoder
`h264`	`h264`	ITU-T H.264 / AVC: decoder (`h264-decode` alone) and encoder (`h264-encode` alone)
`hevc`	`hevc`	ITU-T H.265 / HEVC: decoder (`hevc-decode` alone) and encoder (`hevc-encode` alone)
`vp9`	`vp9`	VP9: decoder (`vp9-decode` alone) and encoder (`vp9-encode` alone)
`av1`	`av1`	AV1 (AOMedia Video 1): decoder (`av1-decode` alone) and encoder (`av1-encode` alone)
`threads`	—	Multi-threaded slice/row parallelism via `rayon`