enricobuehler
13d1aa5738
The long-deferred Android display stage (design/stats-unification.md; plan 4.1 of design/client-parity-and-network-resilience.md): AMediaCodec_setOnFrameRenderedCallback (API 26, under the minSdk-28 floor ⇒ hard-linked via ndk-sys) reports SurfaceFlinger's per-frame render timestamp, giving the HUD the spec's `display` = decoded→displayed term and the directly-measured capture→displayed end-to-end headline on both decode loops. Falls back per spec to the v1 capture→decoded endpoint on any window without render callbacks (the platform may drop them under load), and to it permanently if registration is refused. - The render timestamp arrives on CLOCK_MONOTONIC; it's re-based onto CLOCK_REALTIME against monotonic-now at callback time, which also cancels the (batchable) callback delivery lag. - The `ndk` crate exposes neither the callback nor the codec pointer needed to bind it raw, so the workspace pins `ndk` 0.9.0 to a vendored copy (clients/android/native/ vendor/ndk) whose ONLY change makes MediaCodec::as_ptr public — the "as_ptr patch". Workspace-excluded so host builds never compile it; drop when upstream exposes either. - nativeVideoStats grows to 26 doubles (22–25: dispValid, displayP50, e2eDispP50/P95; 0–21 unchanged for older readers); StatsOverlay moves headline endpoint + equation together so the equation always tiles the headline interval. Verified: host cargo check/test/clippy, aarch64-linux-android check/clippy, Kotlin app+kit+tests compile, roborazzi HUD render shows the full 4-term equation. Device verification rides plan 4.2's phone A/B. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
15 lines
769 B
Markdown
15 lines
769 B
Markdown
# Vendored `ndk` 0.9.0 (patched)
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Verbatim copy of the published `ndk` 0.9.0 crate (https://crates.io/crates/ndk,
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MIT OR Apache-2.0, © the rust-mobile contributors), wired in via `[patch.crates-io]`
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in the workspace root.
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**The only change** is in `src/media/media_codec.rs`: `MediaCodec::as_ptr` is made
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`pub` (upstream keeps it private) so the Android client can register
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`AMediaCodec_setOnFrameRenderedCallback` through `ndk-sys` — the render-timestamp
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callback behind the HUD's `display` stage (`design/stats-unification.md`), which the
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wrapper doesn't expose. Grep for `punktfunk vendored patch` to find it.
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Drop this vendor copy when upstream exposes the raw pointer or a frame-rendered
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callback binding (tracked against https://github.com/rust-mobile/ndk).
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