fix(app,recording): Save Diagnostics UI + faster #460 shutdown - #492
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: defaults Review profile: CHILL Plan: Pro Plus Run ID: 📒 Files selected for processing (2)
Included review availability: Your plan provides up to 4 included reviews per hour; 2 remain after this review. 📝 WalkthroughWalkthroughChangesThe PR adds runtime Windows encoder detection and reporting, shared diagnostic-file export with Save Diagnostics menu actions, and a WGC shutdown path for stalled frame callbacks. Windows encoder runtime
Diagnostic export actions
WGC stalled-callback shutdown
Estimated code review effort: 4 (Complex) | ~45 minutes Merge Risk: ⚪ Minimal · up to The PR adds localized Save Diagnostics entry points and reports passing checks; no actionable merge-blocking risk remains beyond normal review. Sequence Diagram(s)sequenceDiagram
participant Menu
participant runSaveDiagnostics
participant exportDiagnosticFile
participant FileSystem
Menu->>runSaveDiagnostics: Invoke Save Diagnostics
runSaveDiagnostics->>exportDiagnosticFile: Submit diagnostic payload
exportDiagnosticFile->>FileSystem: Prompt and write diagnostic JSON
FileSystem-->>exportDiagnosticFile: Return export result
exportDiagnosticFile-->>runSaveDiagnostics: Return cancellation, success, or error
runSaveDiagnostics->>FileSystem: Reveal saved file on success
sequenceDiagram
participant MFEncoder
participant SinkWriter
participant EncoderMFT
MFEncoder->>SinkWriter: BeginWriting()
MFEncoder->>SinkWriter: GetTransformForStream()
SinkWriter->>EncoderMFT: Return encoder MFT
MFEncoder->>EncoderMFT: Read hardware URL attribute
MFEncoder-->>MFEncoder: Store runtime encoder result
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📝 Generate docstrings
🧪 Generate unit tests (beta)
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Actionable comments posted: 3
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Inline comments:
In `@electron/main.ts`:
- Around line 549-558: Update runSaveDiagnostics to handle unsuccessful export
results: when result.success is false and result.canceled is not true, display
an error to the user using the existing application error-notification
mechanism; preserve showing the exported file for successful results and
silently ignore cancellations.
In `@electron/native/wgc-capture/src/mf_encoder.cpp`:
- Around line 407-418: Update the comment above the encoder hardware-detection
logic to reflect that the default path requests hardware transforms when
software encoding is not forced, but Media Foundation may still resolve that
request to a software MFT. Keep the explanation of checking the constructed
pipeline via GetTransformForStream unchanged.
In `@src/i18n/locales/ko-KR/common.json`:
- Line 44: Update the saveDiagnostics locale entry in ko-KR so it uses the
approved Korean translation “진단 정보 저장” instead of the English label.
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Fix all unresolved CodeRabbit comments on this PR:
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📒 Files selected for processing (21)
electron/ipc/handlers.tselectron/main.tselectron/native/wgc-capture/src/main.cppelectron/native/wgc-capture/src/mf_encoder.cppelectron/native/wgc-capture/src/mf_encoder.hscripts/test-windows-wgc-helper.mjssrc/i18n/locales/ar/common.jsonsrc/i18n/locales/en/common.jsonsrc/i18n/locales/es/common.jsonsrc/i18n/locales/fr/common.jsonsrc/i18n/locales/it/common.jsonsrc/i18n/locales/ja-JP/common.jsonsrc/i18n/locales/ko-KR/common.jsonsrc/i18n/locales/pt-BR/common.jsonsrc/i18n/locales/ru/common.jsonsrc/i18n/locales/tr/common.jsonsrc/i18n/locales/vi/common.jsonsrc/i18n/locales/zh-CN/common.jsonsrc/i18n/locales/zh-TW/common.jsonsrc/lib/nativeWindowsRecording.tstechnical-documentation/architecture/recording.md
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EtienneLescot
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Added a second, related fix on top: stop burning the step budget on a join that cannot succeed. Pins down the exact mechanism behind #460 on Intel HD 520, confirmed by a reporter's Save Diagnostics file on rc.4 (the feature this PR adds a UI entry point for): the WGC frame callback takes the shared frame-state When This does not fix the underlying driver hang — that needs the actual failing hardware. It gets the user a faster, honest failure instead of a long one. Verified with a new fault-injection point ( 🤖 Generated with Claude Code |
electron/ipc/handlers.ts and preload.ts fully implemented saveDiagnostic, and "Save Diagnostics" was localized into all 13 languages, but nothing in the app ever called it -- no button, no menu item, no keyboard shortcut. Found this while working out how to answer a #460 reporter's own question about where to find the diagnostic log: there was no working answer. Extracted the file-writing logic into an exported exportDiagnosticFile, shared by the existing IPC handler and three new entry points in main.ts: the tray's context menu (idle state), the Windows/Linux Help menu, and the macOS app menu. The tray one matters most for capture bugs like #460 -- it's reachable without opening any window, which is exactly the state a HUD is usually in right after a recording fails to stop. Reused "Save Diagnostics"'s existing translations (copied from the otherwise orphaned settings.support.saveDiagnostics key into common.json's actions) rather than inventing new strings across 13 locales. Verified: tsc --noEmit clean, biome clean, full suite (2161 tests) passes, i18n:check passes. Did not launch the dev Electron app -- native menu/tray changes aren't observable through the browser preview tooling, and a second instance risks the single-instance lock other active worktrees hold. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Three findings, all confirmed against current code: - runSaveDiagnostics silently did nothing when exportDiagnosticFile resolved with success:false (a write failure after the user already picked a save location) -- it only handled the success and implicit-reject cases, so a real failure read as the menu action doing nothing. Now shows an error dialog with the underlying message as detail, cancellation still a no-op. - detectVideoEncoderRuntime's doc comment in mf_encoder.cpp still said the default path asks for no hardware-transform attribute at all, which was true when it was written but stopped being true once the default path started requesting MF_READWRITE_ENABLE_HARDWARE_TRANSFORMS. Updated to say what's actually true now: it's a request Media Foundation can still answer with software, which is why the runtime still has to be checked after the fact rather than assumed from the path. - ko-KR's actions.saveDiagnostics carried the English label because it was copied from settings.support.saveDiagnostics, which was itself never translated for Korean. Applied CodeRabbit's suggested translation. Verified: tsc --noEmit clean, biome clean, i18n:check passes, native helper rebuilds clean on MSVC, full suite (2161 tests) passes. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
…cceed Pinned down the exact mechanism behind #460 on Intel HD 520, confirmed by a reporter's Save Diagnostics file on rc.4: the WGC frame callback (main.cpp's session.setFrameCallback) takes the shared frame-state `mutex` and calls session.context()->CopyResource() while still holding it. On this hardware that CopyResource hangs inside the driver. writeVideoFrames() needs the same mutex for its own per-iteration wait -- including to notice stopRequested -- so once the callback wedges, the writer thread can never even check whether a stop was requested. That is why the watchdog reported encode_stage=idle: not idle, blocked on a lock a stuck GPU call holds forever. quiesceCapture() already detects this and gives up after its own 5s drain, returning wgcDrained=false. Nothing downstream listened: video-writer-join called stopVideoWriter() unconditionally, joining a thread that structurally could never return, and paid the full step budget (8s default) before the watchdog force-exited the process anyway -- the same outcome the fix below reaches, just ~8s later. When wgcDrained is false, detach the thread and terminate immediately rather than falling through to a join that cannot succeed. Deliberately does not continue into encoder.finalize(): that resets the D3D device/context state a still-blocked writer thread might resume touching the moment the lock frees. No data is lost either way -- the fragmented sink writes moof+mdat incrementally, so whatever was on disk before the wedge is on disk regardless of which path gets there. Added a new fault-injection point (OPENSCREEN_WGC_TEST_STALL_FRAME_CALLBACK_MS) to reproduce the exact failure shape and verify the fix rather than trust it compiles. Along the way, found that stalling the *first* frame trips an unrelated 10s startup timeout before ever reaching this code path -- the stall has to land on a later frame, matching what the real diagnostic showed (recording-started succeeded before the hang). Also found that moving the cursor alone does not reliably force a WGC frame on this machine (likely hardware cursor compositing bypassing the desktop bitmap); a moving window does. Measured: 5075ms to exit with the fix, versus what would have been ~13000ms (5s drain + 8s step budget) without it. Confirmed via the process exiting right at video-writer-join, with no encoder-finalize/wgc-session-close in the steps afterward. The pre-existing --stall-readback (#252) regression test is unaffected -- that scenario stalls the writer's own readback, not the frame callback, so it never touches this branch. This does not fix the underlying driver hang, which needs the actual failing hardware to diagnose further. It gets the user a faster, honest failure instead of a long one; the recording is still lost when the driver wedges. Verified: tsc --noEmit clean, biome clean, native helper rebuilds clean on MSVC, full suite (2161 tests) passes, both stall regression tests pass. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
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Summary
electron/ipc/handlers.tsandpreload.tsfully implementedsaveDiagnostic, and "Save Diagnostics" was localized into all 13 languages, but nothing in the app ever called it — no button, no menu item, no shortcut. Found this while working out how to answer a #460 reporter's own question about where to find the diagnostic log: there was no working answer to give them.handlers.tsinto an exportedexportDiagnosticFile, shared by the existing IPC handler and three new entry points inmain.ts:settings.support.saveDiagnosticskey intocommon.json'sactions) across all 13 locales rather than inventing new strings.Verification
tsc --noEmitcleanbiome checkcleannpm run i18n:checkpassed (all 12 locales matchenacross 7 namespaces)Test plan
helperOutput/mainProcessLogspopulated🤖 Generated with Claude Code
Summary by CodeRabbit
New Features
Bug Fixes
Documentation
Localization
Tests