yuanyuanxiang
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92f3df8464
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Perf: Optimize macOS screen capture with CGDisplayStream
Core optimization:
- Use CGDisplayStream instead of per-frame CGDisplayCreateImage
- Push model: CPU sleeps when screen is static (condition_variable wait)
- IOSurface capture avoids expensive image creation per frame
- ~47% CPU reduction during active remote desktop (45% → 24%)
Additional optimizations:
- vImageVerticalReflect (SIMD) replaces manual row-by-row flip
- Cache CGColorSpaceRef to avoid per-frame creation/release
- Cache tempBuffer to avoid per-frame memory allocation
- Throttle getCursorTypeIndex to 250ms (Accessibility API is expensive)
Bug fixes:
- Fix unreliable screen capture permission check (use actual capture test)
- Improve permission logging
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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2026-05-03 23:36:23 +02:00 |
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