Brian Hanson
ed9c14616a
- Strip out date, version, update/alert widgets from OffroadHome - Replace with grid layout: Dashcam and Settings buttons - Skip sidebar when tapping splash screen - Settings button still opens original comma settings - Dashcam button placeholder (viewer not yet built) - Add DASHCAM_PROJECT.md with plans for footage viewer Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
50 lines
2.4 KiB
Markdown
50 lines
2.4 KiB
Markdown
# Dashcam Project
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## Status
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### Completed (2026-04-11)
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- Disabled comma training data video encoding (`encoderd`) — CAN/sensor logs still recorded
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- Re-enabled FrogPilot OMX screen recorder (H.264 MP4, 1440x720, 2Mbps, hardware encoded)
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- Auto-start/stop recording tied to car ignition (`scene.started`)
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- `ScreenRecorderDebug` param for bench testing without car connected
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- Hidden all recorder UI elements — invisible to driver
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- Videos saved to `/data/media/0/videos/YYYYMMDD-HHMMSS.mp4`, 3-minute segments
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- Deleter updated: 9 GB free space threshold, rotates oldest videos first
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- Cleaned up offroad UI: replaced stock home screen with grid launcher (Settings + Dashcam buttons)
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### Next: Dashcam Footage Viewer
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Build a native Qt widget accessible from the offroad home screen "Dashcam" button.
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**Requirements:**
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- List MP4 files from `/data/media/0/videos/` sorted newest first
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- Tap a file to play it back using Qt Multimedia (`QMediaPlayer` + `QVideoWidget`)
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- Only accessible when offroad (car in park or off)
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- Back button to return to offroad home
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- No rotation hacks needed — native Qt widget in existing UI tree handles rotation correctly
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**Architecture:**
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- New widget class (e.g. `DashcamViewer`) added to `selfdrive/ui/qt/`
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- Wire into `HomeWindow`'s `QStackedLayout` alongside `home`, `onroad`, `ready`, `driver_view`
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- Dashcam button in `OffroadHome` switches `slayout` to the viewer
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- Viewer has a file list view and a playback view (sub-stacked layout)
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- Back button returns to `OffroadHome`
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- Build: add to `qt_src` list in `selfdrive/ui/SConscript`, link `Qt5Multimedia`
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**Previous webview attempts (abandoned):**
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- Brian tried QWebEngineView for browser-based playback but the WebEngine subprocess renders independently of Qt's widget tree
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- Screen rotation (`view.rotate(90)`, Wayland `wl_surface_set_buffer_transform`) did not work for WebEngine content
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- Native Qt widget approach avoids this problem entirely
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## Key Files
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| File | Role |
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|------|------|
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| `selfdrive/frogpilot/screenrecorder/screenrecorder.cc` | Recording logic, auto-start/stop |
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| `selfdrive/frogpilot/screenrecorder/omx_encoder.cc` | OMX H.264 hardware encoder |
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| `selfdrive/ui/qt/onroad.cc` | Timer driving frame capture |
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| `selfdrive/ui/qt/home.cc` | Offroad home with Dashcam button |
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| `system/loggerd/deleter.py` | Storage rotation |
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| `/data/media/0/videos/` | Video output directory |
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