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// Headless Mode - Testing without GPU
// Workspace: demo (shared across all workspaces)
# Headless Mode
Run audio/timeline without GPU overhead. Useful for CI, audio dev, fast iteration.
## Build & Run
```bash
cmake -B build_headless -DDEMO_HEADLESS=ON
cmake --build build_headless -j4
# 30s simulation (default, progress every 5s)
./build_headless/demo64k --headless
# Custom duration
./build_headless/demo64k --headless --duration 60
# Audio validation (full demo or 60s)
./build_headless/demo64k --dump-wav test.wav
# Render specific time range
./build_headless/demo64k --dump-wav test.wav --dump-wav-start 10 --dump-wav-duration 5
```
**WAV Dump Options:**
- `--dump-wav [FILE]` - Output filename (default: audio_dump.wav)
- `--dump-wav-start TIME` - Start at time (seeks first, default: 0)
- `--dump-wav-duration TIME` - Duration limit (default: demo length or 60s)
Test script: `./scripts/test_headless.sh`
## vs STRIP_EXTERNAL_LIBS
| | HEADLESS | STRIP_EXTERNAL_LIBS |
|---|---|---|
| **Runs** | ✓ | ✗ |
| **Audio/Timeline** | ✓ Full | ✗ No-op |
| **Purpose** | Testing | Size measurement |
|
