AV1 Decoder Implementation Guide (Rust)

AV1 decoder written in pure rust

Spec File: https://aomediacodec.github.io/av1-spec/av1-spec.pdf
Impl Spec: https://aomedia.org/docs/AV1_ToolDescription_v11-clean.pdf

Approach:

• (OBU) parsing: parse bitstream (in progress)
• Context for decoding: keep track of state (in progress)
• Decoding implementation: implement the decoding process (todo)
• Post-processing: apply filters, etc. (todo)
• Testing: write unit tests and collect sample av1 files (in progress)
• Output API: output decoded frames + timing info etc (research needed)

---

OBU Parsing

Todos: 
- [x] Parse OBU header
- [x] Parse Sequence Header OBU
- [x] Parse Temporal Delimiter OBU
- [w] Parse Frame Header OBU
- [ ] Parse Tile Group OBU
- [ ] Parse Metadata OBU
- [ ] Parse Frame OBU
- [ ] Parse Redundant Frame Header OBU
- [ ] Parse Tile List OBU
- [ ] Parse Padding OBU

Context for decoding

Todos:
- [x] Implement context struct
- [x] Implement reference frame management
- [todo]

Decoding implementation

Todos:
[todo]

Post-processing

Todos:
[todo]

Testing

Todos:
- [x] Write unit tests for OBU parsing
    - [x] Sequence Header OBU
    - [x] Temporal Delimiter OBU
    - [ ] Frame Header OBU
    - [ ] Tile Group OBU
    - [ ] Metadata OBU
    - [ ] Frame OBU
    - [ ] Redundant Frame Header OBU
    - [ ] Tile List OBU
    - [ ] Padding OBU
- [ ] Collect sample av1 files
    - [x] Sintel_1080_10s_10MB.mp4
    - [todo]
- [ ] Desing integration tests

Output API

Todos:
- [ ] Research output API
- [ ] Decide on output format
- [ ] Implement output API
[todo]