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index.js

@@ -1,76 +1,214 @@
-import { pipeline } from 'https://cdn.jsdelivr.net/npm/@huggingface/transformers@3.7.6';
-
-// Reference the elements that we will need
-const status = document.getElementById('status');
-const fileUpload = document.getElementById('upload');
-const imageContainer = document.getElementById('container');
-const example = document.getElementById('example');
-
-const EXAMPLE_URL = 'https://huggingface.co/datasets/Xenova/transformers.js-docs/resolve/main/city-streets.jpg';
-
-// Create a new object detection pipeline
-status.textContent = 'Loading model...';
-const detector = await pipeline('object-detection', 'Xenova/detr-resnet-50');
-status.textContent = 'Ready';
-
-example.addEventListener('click', (e) => {
-    e.preventDefault();
-    detect(EXAMPLE_URL);
-});
-
-fileUpload.addEventListener('change', function (e) {
-    const file = e.target.files[0];
-    if (!file) {
-        return;
+// index.js
+class SupertonicTTS {
+    constructor() {
+        this.tts = null;
+        this.currentAudio = null;
+        this.isGenerating = false;
+        this.device = 'cpu';
+        
+        this.initElements();
+        this.bindEvents();
+        this.checkWebGPU();
     }
 
-    const reader = new FileReader();
+    initElements() {
+        this.textInput = document.getElementById('textInput');
+        this.generateBtn = document.getElementById('generateBtn');
+        this.playBtn = document.getElementById('playBtn');
+        this.downloadBtn = document.getElementById('downloadBtn');
+        this.regenerateBtn = document.getElementById('regenerateBtn');
+        this.audioPlayer = document.getElementById('audioPlayer');
+        this.deviceToggle = document.getElementById('deviceToggle');
+        this.deviceText = document.getElementById('deviceText');
+        this.status = document.getElementById('status');
+        this.audioSection = document.getElementById('audioSection');
+        this.charCount = document.getElementById('charCount');
+    }
 
-    // Set up a callback when the file is loaded
-    reader.onload = e2 => detect(e2.target.result);
+    bindEvents() {
+        this.textInput.addEventListener('input', () => this.updateCharCount());
+        this.generateBtn.addEventListener('click', () => this.generateSpeech());
+        this.playBtn.addEventListener('click', () => this.playAudio());
+        this.downloadBtn.addEventListener('click', () => this.downloadAudio());
+        this.regenerateBtn.addEventListener('click', () => this.regenerate());
+        this.deviceToggle.addEventListener('change', (e) => this.toggleDevice(e.target.checked));
+        this.audioPlayer.addEventListener('ended', () => this.updatePlayButton(true));
+    }
 
-    reader.readAsDataURL(file);
-});
+    async checkWebGPU() {
+        if (navigator.gpu) {
+            this.deviceText.textContent = 'GPU Available';
+            this.deviceToggle.disabled = false;
+        } else {
+            this.deviceText.textContent = 'GPU Not Supported';
+        }
+    }
 
+    toggleDevice(enabled) {
+        this.device = enabled ? 'webgpu' : 'cpu';
+        this.deviceText.textContent = enabled ? 'GPU Mode' : 'CPU Mode';
+        if (this.tts) {
+            this.showStatus('Device changed. Please regenerate audio.', 'info');
+        }
+    }
 
-// Detect objects in the image
-async function detect(img) {
-    imageContainer.innerHTML = '';
-    imageContainer.style.backgroundImage = `url(${img})`;
+    updateCharCount() {
+        const length = this.textInput.value.length;
+        this.charCount.textContent = `${length}/500`;
+        this.generateBtn.disabled = !this.textInput.value.trim() || length > 500 || this.isGenerating;
+    }
 
-    status.textContent = 'Analysing...';
-    const output = await detector(img, {
-        threshold: 0.5,
-        percentage: true,
-    });
-    status.textContent = '';
-    output.forEach(renderBox);
-}
+    async initTTS() {
+        try {
+            this.showStatus('Loading Supertonic TTS model...', 'loading');
+            
+            const options = {
+                dtype: 'fp32'
+            };
+            
+            if (this.device === 'webgpu') {
+                options.device = 'webgpu';
+            }
+
+            // Note: For demo purposes, we'll use speaker_embeddings as a placeholder
+            // In production, host actual speaker files or use default
+            this.tts = await window.pipeline('text-to-speech', 'onnx-community/Supertonic-TTS-ONNX', options);
+            
+            this.showStatus('Model loaded successfully! Ready to generate speech.', 'success');
+            this.generateBtn.disabled = false;
+        } catch (error) {
+            console.error('Failed to load TTS model:', error);
+            this.showStatus(`Failed to load model: ${error.message}. Retrying in CPU mode...`, 'error');
+            // Fallback to CPU
+            try {
+                this.tts = await window.pipeline('text-to-speech', 'onnx-community/Supertonic-TTS-ONNX', { dtype: 'fp32' });
+                this.showStatus('Model loaded in CPU mode!', 'success');
+                this.generateBtn.disabled = false;
+            } catch (fallbackError) {
+                this.showStatus('Failed to load model. Please refresh and try again.', 'error');
+            }
+        }
+    }
+
+    async generateSpeech() {
+        if (this.isGenerating) return;
+
+        const text = this.textInput.value.trim();
+        if (!text) {
+            this.showStatus('Please enter some text to convert to speech.', 'error');
+            return;
+        }
+
+        this.isGenerating = true;
+        this.generateBtn.disabled = true;
+        this.setButtonLoading(true);
+
+        try {
+            this.showStatus('Generating speech...', 'loading');
+            
+            // Generate audio - note: speaker_embeddings path simplified for demo
+            // In production, host actual speaker embedding files
+            const audio = await this.tts(text, {
+                speaker_embeddings: 'https://huggingface.co/datasets/Supertonic/Supertonic-TTS-ONNX/resolve/main/voices/F1.bin'
+            });
+
+            // Convert to playable audio
+            this.currentAudio = audio;
+            
+            // Create blob URL for audio player
+            const audioBlob = await audio.save();
+            const audioUrl = URL.createObjectURL(audioBlob);
+            this.audioPlayer.src = audioUrl;
+            
+            this.audioSection.classList.remove('hidden');
+            this.downloadBtn.disabled = false;
+            this.updatePlayButton(true);
+            
+            this.showStatus('Speech generated successfully! Click play to listen.', 'success');
+            
+        } catch (error) {
+            console.error('TTS generation failed:', error);
+            this.showStatus(`Generation failed: ${error.message}`, 'error');
+        } finally {
+            this.isGenerating = false;
+            this.setButtonLoading(false);
+            this.generateBtn.disabled = false;
+        }
+    }
+
+    playAudio() {
+        if (this.audioPlayer.paused) {
+            this.audioPlayer.play();
+            this.updatePlayButton(false);
+        } else {
+            this.audioPlayer.pause();
+            this.updatePlayButton(true);
+        }
+    }
 
-// Render a bounding box and label on the image
-function renderBox({ box, label }) {
-    const { xmax, xmin, ymax, ymin } = box;
-
-    // Generate a random color for the box
-    const color = '#' + Math.floor(Math.random() * 0xFFFFFF).toString(16).padStart(6, 0);
-
-    // Draw the box
-    const boxElement = document.createElement('div');
-    boxElement.className = 'bounding-box';
-    Object.assign(boxElement.style, {
-        borderColor: color,
-        left: 100 * xmin + '%',
-        top: 100 * ymin + '%',
-        width: 100 * (xmax - xmin) + '%',
-        height: 100 * (ymax - ymin) + '%',
-    })
-
-    // Draw label
-    const labelElement = document.createElement('span');
-    labelElement.textContent = label;
-    labelElement.className = 'bounding-box-label';
-    labelElement.style.backgroundColor = color;
-
-    boxElement.appendChild(labelElement);
-    imageContainer.appendChild(boxElement);
+    updatePlayButton(isPaused) {
+        const icon = this.playBtn.querySelector('svg');
+        if (isPaused) {
+            icon.innerHTML = '<path d="M8 5v14l11-7z"/>';
+            this.playBtn.title = 'Play audio';
+        } else {
+            icon.innerHTML = '<path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/>';
+            this.playBtn.title = 'Pause audio';
+        }
+    }
+
+    async downloadAudio() {
+        if (this.currentAudio) {
+            const audioBlob = await this.currentAudio.save();
+            const url = URL.createObjectURL(audioBlob);
+            const a = document.createElement('a');
+            a.href = url;
+            a.download = 'supertonic-speech.wav';
+            document.body.appendChild(a);
+            a.click();
+            document.body.removeChild(a);
+            URL.revokeObjectURL(url);
+        }
+    }
+
+    regenerate() {
+        this.textInput.value = '';
+        this.audioSection.classList.add('hidden');
+        this.downloadBtn.disabled = true;
+        this.currentAudio = null;
+        this.audioPlayer.src = '';
+        this.updateCharCount();
+    }
+
+    setButtonLoading(loading) {
+        const spinner = this.generateBtn.querySelector('.spinner');
+        const btnText = this.generateBtn.querySelector('.btn-text');
+        if (loading) {
+            spinner.style.display = 'inline-block';
+            btnText.textContent = 'Generating...';
+        } else {
+            spinner.style.display = 'none';
+            btnText.textContent = 'Generate Speech';
+        }
+    }
+
+    showStatus(message, type) {
+        this.status.textContent = message;
+        this.status.className = `status ${type}`;
+        this.status.classList.remove('hidden');
+        
+        if (type !== 'loading') {
+            setTimeout(() => {
+                this.status.classList.add('hidden');
+            }, 5000);
+        }
+    }
 }
+
+// Initialize app when DOM is loaded
+document.addEventListener('DOMContentLoaded', () => {
+    const app = new SupertonicTTS();
+    
+    // Auto-initialize TTS model
+    setTimeout(() => app.initTTS(), 100);
+});