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Adds negotiated 5.1/7.1 surround to the punktfunk/1 protocol and every client (previously stereo-only): - core: new shared `audio` layout table (LAYOUT_51/71 + identity multistream mapping, canonical wire order FL FR FC LFE RL RR SL SR); Hello/Welcome `audio_channels` negotiation via the trailing-byte back-compat pattern (old peers fall back to stereo); C-ABI `punktfunk_connect_ex6`, `punktfunk_connection_audio_channels`, and in-core multistream decode `punktfunk_connection_next_audio_pcm` for embedders without a multistream Opus decoder. Real-libopus channel-identity round-trip test. - host: native audio thread captures + Opus-(multi)stream-encodes at the negotiated count (with a cross-session cached-capturer channel-mismatch fix); GameStream surround unified onto the safe `opus::MSEncoder`, dropping `audiopus_sys` (~4 unsafe blocks) and un-gating Windows GameStream surround; WASAPI loopback capture relaxed to 2/6/8 with the correct dwChannelMask. - clients: Linux (PipeWire), Windows (WASAPI), Android (AAudio) decode via `opus::MSDecoder` + render multichannel; Apple decodes in-core to PCM → AVAudioEngine with an explicit wire-order channel layout; each gains a Stereo/5.1/7.1 setting. `punktfunk-probe --audio-channels N` is the headless validator. Verified on Linux: core/host/linux/probe test suites + the Android Rust (cargo-ndk) build, clippy -D warnings, and rustfmt all green. Windows/Apple builds, all on-glass checks, and the live native loopback are pending (CI / a free box). Also lands the concurrent in-tree HEVC 4:4:4 host work (PUNKTFUNK_444): it shares the same touched files (quic.rs, punktfunk1.rs, encode/*, ...) and so cannot be committed separately from the surround changes. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
54 lines
2.2 KiB
Rust
54 lines
2.2 KiB
Rust
//! # punktfunk-core
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//!
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//! The shared protocol / transport / FEC core for the punktfunk low-latency streaming
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//! stack. It is compiled exactly once and linked by every host and client — directly
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//! as a Rust `lib`, or across the [C ABI](crate::abi) by Swift / Kotlin / C clients.
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//!
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//! Everything platform-specific (capture, encode, decode, present, input injection)
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//! lives *outside* this crate. What lives *here*:
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//!
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//! - [`fec`] — erasure coding. GF(2⁸) for GameStream/Moonlight compatibility (P1) and
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//! GF(2¹⁶) Leopard-RS (P2) which removes the ~1 Gbps per-frame shard-count ceiling.
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//! - [`packet`] — `#[repr(C)]` zero-copy wire framing: splitting an access unit into
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//! FEC blocks of MTU-sized shards and reassembling them on the far side.
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//! - [`crypto`] — AES-128-GCM session sealing, matching GameStream in P1.
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//! - [`session`] — the host (submit frame → FEC → packetize → seal → send) and client
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//! (recv → open → reorder → FEC recover → reassemble) state machines.
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//! - [`transport`] — pluggable packet I/O (in-process loopback for tests; UDP for real).
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//! - [`abi`] — the `extern "C"` surface and `cbindgen`-generated `punktfunk_core.h`.
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//!
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//! ## Threading contract
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//!
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//! Nothing in the per-frame path touches an async runtime. `tokio`/`quinn` are gated
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//! behind the off-by-default `quic` feature and used only for the control plane.
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#![forbid(unsafe_op_in_unsafe_fn)]
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pub mod abi;
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pub mod audio;
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#[cfg(feature = "quic")]
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pub mod client;
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pub mod config;
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pub mod crypto;
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pub mod error;
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pub mod fec;
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pub mod input;
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pub mod packet;
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#[cfg(feature = "quic")]
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pub mod quic;
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pub mod session;
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pub mod stats;
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pub mod transport;
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pub use config::{CompositorPref, Config, FecConfig, FecScheme, Mode, ProtocolPhase, Role};
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pub use error::{PunktfunkError, PunktfunkStatus, Result};
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pub use session::{Frame, Session};
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pub use stats::Stats;
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/// Bump on any breaking change to the [C ABI](crate::abi). Mirrors
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/// `punktfunk_abi_version()` and is checked by clients before use.
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///
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/// v2: `punktfunk_connect` gained `client_cert_pem`/`client_key_pem` (pairing identities);
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/// added `punktfunk_pair` / `punktfunk_generate_identity` / `punktfunk_connection_request_mode`.
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pub const ABI_VERSION: u32 = 2;
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