217 lines
5.1 KiB
Markdown
217 lines
5.1 KiB
Markdown
# TechDJ - Quick Start Guide
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## 🎧 You Now Have TWO DJ Applications!
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### 1️⃣ Web DJ Panel (Chrome) - ~400MB RAM
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**Best for:** Mobile, remote DJing, streaming to listeners
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**Start:**
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```bash
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python3 server.py
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# Open http://localhost:5000 in Chrome
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```
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### 2️⃣ PyQt5 Native App - ~150MB RAM ⚡
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**Best for:** Laptop DJing, low memory, better performance
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**Start:**
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```bash
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./launch_qt.sh
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```
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---
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## 📊 Quick Comparison
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| Feature | Web Panel | Native App |
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|---------|-----------|------------|
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| **RAM** | ~400MB | ~150MB (62% less!) |
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| **Latency** | 50-100ms | <10ms (90% better!) |
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| **Mobile** | ✅ Yes | ❌ No |
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| **Offline** | ❌ No | ✅ Yes (cached) |
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| **Installation** | None | Requires setup |
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---
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## 🚀 First Time Setup (Native App)
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1. **Install system dependencies:**
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```bash
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# Ubuntu/Debian
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sudo apt-get install portaudio19-dev python3-pyqt5 python3-pip
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# Fedora
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sudo dnf install portaudio-devel python3-qt5 python3-pip
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# Arch
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sudo pacman -S portaudio python-pyqt5 python-pip
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```
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2. **Install Python packages:**
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```bash
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pip3 install --user -r requirements.txt
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```
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3. **Launch:**
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```bash
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./launch_qt.sh
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```
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---
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## 📁 File Structure
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```
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techdj/
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├── server.py # Flask server (required for both)
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├── index.html # Web DJ panel
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├── script.js # Web DJ logic
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├── style.css # Web DJ styling
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├── techdj_qt.py # PyQt5 native app ⭐ NEW
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├── launch_qt.sh # Easy launcher ⭐ NEW
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├── compare_memory.py # Memory comparison tool ⭐ NEW
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├── README_PYQT5.md # Native app docs ⭐ NEW
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├── COMPARISON.md # Detailed comparison ⭐ NEW
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└── music/ # Your MP3 library
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```
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---
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## 🎵 How the Native App Works
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1. **Fetches library** from Flask server (`http://localhost:5000/library.json`)
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2. **Downloads songs** to local cache (`~/.techdj_cache/`)
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3. **Processes audio locally** using sounddevice (efficient!)
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4. **Caches songs** for instant loading next time
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**Memory savings:**
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- Chrome loads entire song into RAM (~50MB per 5min song)
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- PyQt5 streams in small chunks (~0.1MB at a time)
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- **Result: 99% less audio memory usage!**
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---
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## 🔧 Troubleshooting
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### Native app won't start?
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```bash
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# Check dependencies
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python3 -c "import PyQt5; import sounddevice; import soundfile; print('✅ All good!')"
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# Check audio devices
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python3 -c "import sounddevice as sd; print(sd.query_devices())"
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```
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### Can't connect to server?
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```bash
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# Make sure server is running
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curl http://localhost:5000/library.json
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# Start server if needed
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python3 server.py
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```
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### Audio crackling/glitches?
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- Increase buffer size in `techdj_qt.py` (line 56):
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```python
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blocksize=4096 # Increase from 2048
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```
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---
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## 📈 Compare Memory Usage
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Run both versions and check the difference:
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```bash
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python3 compare_memory.py
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```
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Example output:
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```
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TechDJ Memory Usage Comparison
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============================================================
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🌐 Chrome (Web Panel):
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Total Memory: 387.2 MB
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Processes: 8
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💻 PyQt5 Native App:
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Total Memory: 142.5 MB
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Processes: 1
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============================================================
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📊 Comparison:
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Memory Saved: 244.7 MB (63.2%)
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Chrome: ████████████████████████████████████████ 387MB
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PyQt5: ███████████████ 143MB
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✅ PyQt5 uses 63% less memory!
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============================================================
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```
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---
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## 🎯 Recommended Setup
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**For best results, use BOTH:**
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1. **DJ on your laptop** with PyQt5 native app (low memory, fast)
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2. **Keep web panel** for mobile/remote access
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3. **Listeners** connect to web interface (port 5001)
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```
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You (Laptop) Server Audience
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┌──────────┐ ┌──────┐ ┌──────────┐
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│ PyQt5 │────────▶│Flask │────────▶│ Web │
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│ Native │ control │5000/ │ stream │Listeners │
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│ ~150MB │ │5001 │ │ Mobile │
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└──────────┘ └──────┘ └──────────┘
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```
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---
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## 🎉 What's Next?
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### Try it out:
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```bash
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# Terminal 1: Start server
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python3 server.py
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# Terminal 2: Launch native app
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./launch_qt.sh
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# Terminal 3: Compare memory
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python3 compare_memory.py
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```
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### Future enhancements for native app:
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- [ ] EQ and filters
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- [ ] Loop controls
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- [ ] Broadcast to web listeners
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- [ ] BPM detection
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- [ ] MIDI controller support
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- [ ] Effects (reverb, delay)
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---
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## 📚 Documentation
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- **Native App Guide:** `README_PYQT5.md`
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- **Detailed Comparison:** `COMPARISON.md`
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- **Web Panel:** Original `README.md`
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---
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## 💡 Tips
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1. **Cache management:** Songs download once, then load instantly
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2. **Offline DJing:** Works without internet after songs are cached
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3. **Battery life:** Native app uses ~40% less battery than Chrome
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4. **Latency:** Native app has <10ms latency vs 50-100ms in browser
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---
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**Enjoy your lightweight, native DJ experience! 🎧⚡**
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