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-rw-r--r--doc/HOWTO.md26
1 files changed, 25 insertions, 1 deletions
diff --git a/doc/HOWTO.md b/doc/HOWTO.md
index 506bf0a..0dc9ec7 100644
--- a/doc/HOWTO.md
+++ b/doc/HOWTO.md
@@ -25,7 +25,15 @@ cmake -S . -B build
cmake --build build -j4
./build/demo64k
```
-Options: `--fullscreen`, `--resolution WxH`, `--seek TIME`, `--hot-reload`
+
+**CLI Options:**
+- `--fullscreen` - Fullscreen mode
+- `--resolution WxH` - Window resolution (e.g., 1920x1080)
+- `--seek TIME` - Start at time (seconds)
+- `--hot-reload` - Watch config files for changes
+- `--dump-wav [FILE]` - Render audio to WAV file
+- `--dump-wav-start TIME` - Start WAV dump at time (seeks first)
+- `--dump-wav-duration TIME` - Limit WAV dump duration
### Production Builds
```bash
@@ -252,6 +260,21 @@ Features: Drag/drop, beat-based editing, audio playback, waveform visualization,
## Audio
+### Rendering Audio to WAV
+
+```bash
+# Render full demo
+./build/demo64k --dump-wav output.wav
+
+# Render specific time range
+./build/demo64k --dump-wav output.wav --dump-wav-start 10 --dump-wav-duration 5
+
+# Render first 30 seconds
+./build/demo64k --dump-wav output.wav --dump-wav-duration 30
+```
+
+### API Usage
+
```cpp
#include "audio/audio_engine.h"
@@ -262,6 +285,7 @@ g_audio_engine.update(music_time);
g_audio_engine.shutdown();
audio_shutdown();
```
+
See `doc/TRACKER.md` for music system.
---