forked from unom/punktfunk
enricobuehlerandClaude Opus 4.8
9fe9c451dc
Real-world PyroWave streaming maxed ~2.5 Gbps with sagging fps while raw transport does 4.8. Root-caused to serial per-frame paths at BOTH ends (the transport was never the limit); this fixes the two dominant ones. Host (vendored shim, patch 0004): pyrowave_encoder_encode_gpu_synchronous allocated four Vulkan buffers (meta + bitstream, Device + CachedHost) on EVERY frame. At 240 fps with MB-scale bitstreams that per-frame allocator churn stalled the encode itself. Pool them on the encoder and reuse across frames (recreate only on a size grow); the sizes are session-fixed, so it is pure reuse after frame 1. On an RTX 4090 the 5120x1440 submit+fence-wait drops ~15 ms -> ~1 ms, i.e. the host serial ceiling goes 64 -> 1025 fps (444+HDR 44 -> 614). Safe under the synchronous encode model; re-validated by pyrowave_win_smoke (Windows) and pyrowave_smoke/_444 (Linux). Applies to both host encoder paths (they share the shim). Client (Apple Metal decoder): WaveletBitstream.parse reserved the payload buffer per packet (reserveCapacity(count + words), an exact realloc each of ~3000 packets/frame => O(n²)) and copied word-by-word. Reserve once up front and memcpy each packet's coefficients in one shot (all Apple platforms are little-endian, so the wire's LE u32s land verbatim; memcpy is alignment-free). 5.44 ms -> 0.055 ms per 1.44 MB frame (25x); byte-identical (parser unit tests + golden-frame PSNR unchanged). Also: - native.rs: PUNKTFUNK_PYROWAVE_MAX_MBPS caps PyroWave's open-loop Automatic bitrate pin for hosts on a constrained link (unset => no cap; an explicit client rate bypasses it). The pin is all-intra + ABR-off, so at a high pixel rate it can outrun the fabric (4:4:4+HDR 5120x1440@240 pins ~5.3 Gbps, over a 5 GbE link) and the overshoot just becomes loss. - pf-encode caps(): report the real opened chroma instead of a hardcoded 4:2:0 default, so a genuine 4:4:4 session no longer trips the spurious "encoder chroma disagrees with the negotiated Welcome" warn. Also fix a latent Windows reset() that rebuilt at 4:2:0 for a 4:4:4 session. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>