Fix SDR stream color mode negotiation - #21
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📝 WalkthroughWalkthroughThe stream client now negotiates SDR status, inspects decoded video color metadata, exposes it in realtime statistics, and displays it in the stream page. Tests, a diagnostic preview utility, and CI coverage were added. ChangesSDR Color Observability
Estimated code review effort: 3 (Moderate) | ~20 minutes Mergeability Score: ⚪ Minimal · up to The PR changes stream color-mode negotiation and diagnostics while keeping rendering behavior unchanged; no actionable merge-blocking risk remains based on the available evidence. Sequence Diagram(s)sequenceDiagram
participant OpenStroidStreamClient
participant VideoElement
participant VideoFrame
participant StreamRealtimeStats
participant StatsPanel
OpenStroidStreamClient->>VideoElement: Start video playback
OpenStroidStreamClient->>VideoFrame: Inspect decoded color metadata
VideoFrame-->>OpenStroidStreamClient: Return color-space metadata
OpenStroidStreamClient->>StreamRealtimeStats: Publish SDR mode and metadata
StreamRealtimeStats-->>StatsPanel: Provide realtime statistics
StatsPanel->>StatsPanel: Format and display color-space information
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Actionable comments posted: 1
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Inline comments:
In `@src/stream/OpenStroidStreamClient.ts`:
- Around line 1800-1821: Clear decodedColorSpace at the start of
inspectDecodedColorSpace, before the VideoFrame availability check and frame
construction, so failed or unavailable inspections cannot retain metadata from a
previous stream.
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docs/verification/stream-color/sdr-diagnostics.pngis excluded by!**/*.png
📒 Files selected for processing (7)
.github/workflows/ci.ymlpackage.jsonsrc/pages/StreamPage.tsxsrc/stream/OpenStroidStreamClient.tssrc/types/index.tstools/stream-color-preview.mjstools/stream-color.test.ts
…-mode # Conflicts: # package.json
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Reported by Discord user <@92200966610251776> (Kohega) in the original Discord report.
Root cause
OpenStroid receives an 8-bit H.264 or AV1 profile 0 WebRTC stream and renders it through Chromium's managed video pipeline. Those negotiated formats are the existing SDR path; OpenStroid has no HDR-capable codec/profile selection, display capability check, HDR renderer mode, or tone mapper.
Despite that, the
stream/setstatushandler copied the gateway'shdrstate into client runtime state and echoed it in the laterstream/statusreadiness response. A gateway/remote-session HDR state could therefore make OpenStroid claim HDR support it does not implement. That lets the remote capture/encoder remain in an HDR color mode while Chromium displays the resulting stream on OpenStroid's SDR path, producing the muted/washed-out appearance. The decoder and<video>renderer otherwise already honor encoded WebRTC color metadata; adding saturation or contrast would corrupt correctly tagged SDR video.Changes
VideoFrame.colorSpacemetadata after playback starts and expose primaries, transfer, matrix, and range in logs and stream stats.<video>rendering path unchanged so encoded BT.709/range metadata drives YUV-to-RGB conversion and display color management.Visual verification
The stream page was built and rendered at 1440×900 with a deterministic SDR color chart fixture. The screenshot demonstrates the affected stream surface and the new
Color mode: SDRdiagnostics. It is UI/diagnostic proof, not a claim of pixel-for-pixel parity with Steam Remote Play; a live Boosteroid/Cyberpunk comparison requires the reporter's authenticated session and display.Validation
npm run buildnpm run test:stream-colornpm run test:uinpm run lintgit diff --checkLimitations
OpenStroid still does not advertise or implement HDR output. Proper HDR support would require an HDR-capable codec/profile and bit depth, reliable primaries/transfer/range metadata from capture through RTP/bitstream decode, display capability detection, and an HDR-capable Chromium/Electron compositor path (or explicit tone mapping for SDR displays). This fix deliberately prevents unsupported HDR negotiation rather than pretending that pipeline exists.
Summary by CodeRabbit
New Features
Bug Fixes
Tests