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4grayandClaude Fable 5
10cf157f79
Standalone macOS spike for the frame-copy unification direction from the 2026-07-10 analysis: a helper process renders mpv offscreen into a GL FBO, reads frames back through an async PBO ring, and publishes BGRA frames into a 3-slot POSIX shm seqlock ring; a minimal Electron viewer copies the newest frame via a plain-C N-API addon and uploads it to a WebGL canvas per rAF. First numbers on M1 Pro (see spike README): 4K60 HEVC hwdec sustained at 60 fps end to end, ~1.2 ms shm copy + ~3.5 ms texture upload, ~10 ms produce-to-upload age, zero torn frames. Remaining gates: weak hardware, long-run pacing, HDR, latency flash test. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
39 lines
1.1 KiB
Bash
Executable File
39 lines
1.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Build and run the full spike: helper (producer) + Electron viewer (consumer).
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#
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# ./run.sh <media-url-or-path> [WxH]
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# ./run.sh 'av://lavfi:testsrc2=size=1920x1080:rate=60' 1920x1080
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#
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# Env overrides: ELECTRON (viewer binary), SPIKE_SHM (ring name),
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# HELPER_ARGS (extra helper flags, e.g. "--hwdec videotoolbox-copy --loop").
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set -euo pipefail
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DIR="$(cd "$(dirname "$0")" && pwd)"
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MEDIA="${1:?usage: run.sh <media-url-or-path> [WxH]}"
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SIZE="${2:-1920x1080}"
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SHM="${SPIKE_SHM:-/mpv-frame-spike}"
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make -C "$DIR"
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if [[ -z "${ELECTRON:-}" ]]; then
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for candidate in \
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"$DIR/../../node_modules/.bin/electron" \
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"$DIR/../../../../../node_modules/.bin/electron"; do
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if [[ -x "$candidate" ]]; then
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ELECTRON="$candidate"
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break
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fi
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done
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fi
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if [[ -z "${ELECTRON:-}" ]]; then
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echo "electron binary not found; set ELECTRON=/path/to/electron" >&2
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exit 1
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fi
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# shellcheck disable=SC2086
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"$DIR/build/mpv_helper" "$MEDIA" --size "$SIZE" --shm "$SHM" ${HELPER_ARGS:-} &
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HELPER_PID=$!
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trap 'kill "$HELPER_PID" 2>/dev/null || true' EXIT
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SPIKE_SHM="$SHM" "$ELECTRON" "$DIR/viewer/main.js"
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