🚀 Current Implementation Status
Live Audit of FlowState DAW Codebase - December 2024
✅ FlowState is Production-Ready!
All core features implemented. The DAW is fully functional with AI beat generation, voice commands, sample browser, mixer, and export capabilities.
118
Source Files
23K+
Lines of Code
7
Zustand Stores
25
Custom Hooks
7
Drum Kits
🎹 "West Coast Vibes" G-Funk Demo
The demo project now features a complete G-Funk production with 4 synthesized tracks generated entirely in the browser:
🥁 808 Drums
32-step pattern with 22% swing, kicks, snares, hats, cowbell, congas
🎸 Moog Bass
Deep triangle wave sub bass following G minor chord progression
🎸 Wah Guitar
Funky envelope-filtered chord stabs with auto-wah sweep
🎹 Rhodes
Smooth jazz voicings with tremolo: Gm9, Cm9, Dm9 progression
90 BPM • G minor • 2-bar loop — All synthesis happens client-side using Web Audio API oscillators, filters, and envelopes.
Feature Status
✅ Audio Engine (Tone.js)
- ✓ Tone.js audio context initialization
- ✓ Transport controls (play, pause, stop, loop)
- ✓ BPM sync with visual timeline
- ✓ Master channel with gain and limiter
- ✓ Sample playback scheduling
✅ Timeline (PIXI.js)
- ✓ Visual timeline rendering with PIXI.js
- ✓ Audio clip display with waveform preview
- ✓ Clip dragging between tracks
- ✓ Zoom and scroll with keyboard shortcuts
- ✓ Snap-to-grid with multiple divisions
- ✓ Playhead position tracking
✅ Drum Machine
- ✓ 16-pad grid with color-coded pads
- ✓ 32-step sequencer per pattern
- ✓ 4 pattern slots (A/B/C/D)
- ✓ Pattern length (4/8/16/32 steps)
- ✓ Swing parameter (0-100%)
- ✓ Velocity per step
- ✓ 7 Drum Kits: TR-808, TR-909, MPC60, SP-1200, DX7, M1, Vintage Keys
✅ Sample Browser
- ✓ 10 category types with subcategories
- ✓ Text search with filtering
- ✓ BPM, key, and tag filtering
- ✓ Drag-to-timeline sample placement
- ✓ Audio preview playback
- ✓ Favorites & Collections
- ✓ List and grid view modes
✅ Freesound Integration
- ✓ Freesound.org API integration
- ✓ CC-licensed sample search
- ✓ Metadata extraction (BPM, key, duration)
- ✓ License filtering
- ✓ User attribution
✅ AI Chat & Beat Generation
- ✓ Real-time chat streaming (SSE)
- ✓ Context awareness (tempo, key, tracks, kit)
- ✓ YouTube URL analysis and style detection
- ✓ Beat generation commands
- ✓ Genre-specific prompt engineering
- ✓ Chat history persistence
- ✓ Fullscreen popup mode
✅ Voice Commands
- ✓ Push-to-talk recording
- ✓ Whisper speech-to-text
- ✓ Caching of transcription results
- ✓ Command intent parsing
- ✓ Real-time feedback display
✅ Mixer
- ✓ Master volume control (-60 to 12 dB)
- ✓ Master mute & limiter
- ✓ Clip detection indicator
- ✓ 3-band EQ per track (±12 dB)
- ✓ Pan control per track
- ✓ VU meter visualization
✅ Export
- ✓ WAV and MP3 export formats
- ✓ Quality selection (standard/high)
- ✓ Real-time progress tracking
- ✓ Cancellable export
- ✓ Audio rendering to buffer
✅ Project Management
- ✓ Auto-save to localStorage
- ✓ IndexedDB for clip audio data
- ✓ Project serialization
- ✓ Session restoration on reload
- ✓ Project list with thumbnails
- ✓ Rename & delete projects
✅ Undo/Redo (AI Actions)
- ✓ Undo stack (max 10 snapshots)
- ✓ Snapshot before AI action
- ✓ Restore previous state
- ✓ Action description tracking
⚠️ Authentication
- ✓ Auth button in UI
- ✓ Session management setup
- ○ Not fully integrated with backend
Component Architecture
App (Router)
├── DAWPage (Main interface)
│ ├── TransportBar (Play/pause, BPM, time signature)
│ ├── Timeline (PIXI.js clip editor with waveforms)
│ ├── TrackList (Track controls, solo/mute/arm)
│ └── BottomPanel
│ ├── DrumMachine (16-pad sequencer, 7 kits)
│ ├── SampleBrowser (Search, preview, drag-to-timeline)
│ ├── Mixer (EQ, volume, pan, VU meters)
│ └── AIChat (Chat, voice, beat generation)
├── ProjectsPage (Project management, cards)
└── DebugPanel (Dev tools)
Overlays:
├── ChatPanel (Fullscreen AI chat popup)
├── ExportDialog (Format selection, progress)
├── DeleteProjectDialog (Confirmation)
└── VoiceCommandFeedback (Transcription display)Technology Stack
| Layer | Technology | Purpose |
|---|---|---|
| Frontend | React 18 + TypeScript | UI framework |
| State | Zustand + Immer | State management |
| Audio | Tone.js + Web Audio API | Audio engine |
| Graphics | PIXI.js | Timeline rendering |
| Styling | Tailwind CSS | UI styling |
| Build | Vite | Dev server & bundler |
| Testing | Vitest | Unit tests |
| Backend | Cloudflare Pages Functions | API endpoints |
| Workers | Cloudflare Workers | Edge compute |
| Database | D1 (SQLite) + Vectorize | Data + vector search |
| Storage | R2 | Sample files |
| AI | Workers AI + Gemini | Chat, Whisper, embeddings |
| Persistence | localStorage + IndexedDB | Client-side storage |
Available Drum Kits
| Kit | Style | Status |
|---|---|---|
| TR-808 | Classic Hip-Hop, Trap | ✅ Loaded |
| TR-909 | House, Techno | ✅ Loaded |
| MPC60 | Boom Bap, Golden Era | ✅ Loaded |
| SP-1200 | Lo-Fi, Gritty Hip-Hop | ✅ Loaded |
| DX7 | Electric Pianos, FM Synth | ✅ Loaded |
| M1 | 90s R&B, House Keys | ✅ Loaded |
| Vintage Keys | Rhodes, Wurlitzer | ✅ Loaded |
API Endpoints
| Endpoint | Method | Purpose |
|---|---|---|
/api/voice | POST | Speech-to-text (Whisper) |
/api/chat/stream | POST | AI chat with beat generation |
/api/chat/history | GET/POST | Chat history management |
/api/samples/search | GET/POST | Semantic sample search |
/api/health | GET | Status check |
Last Audit: December 19, 2024
Codebase: /Users/terry/flowstate-daw
Live URL: flowstate-daw.pages.dev
Codebase: /Users/terry/flowstate-daw
Live URL: flowstate-daw.pages.dev