Text to Speech

\n \n

\n\n\n */\n}\n\nfunction css() {\n /*\nbody {\n font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;\n display: flex;\n justify-content: center;\n align-items: center;\n min-height: 100vh;\n min-height: 100dvh;\n margin: 0;\n background-color: #121212;\n color: #e0e0e0;\n}\n\n.container {\n background-color: #1e1e1e;\n padding: 2rem;\n border-radius: 8px;\n width: 100%;\n max-width: 500px;\n position: relative;\n border: 1px solid #2a2a2a;\n box-shadow: 0 4px 15px rgba(0,0,0,0.2);\n}\n\n.container::before {\n content: '';\n position: absolute;\n top: 0;\n left: 0;\n right: 0;\n height: 4px;\n background: linear-gradient(90deg, #00c6ff 0%, #0072ff 100%);\n}\n\nh1 {\n font-size: 1rem;\n color: #888;\n text-align: center;\n margin-bottom: 1.5rem;\n font-weight: 300;\n}\n\ntextarea {\n width: 100%;\n box-sizing: border-box;\n margin-bottom: 1rem;\n padding: 0.3rem 0.5rem;\n resize: vertical;\n background-color: #2a2a2a;\n border: 1px solid #3a3a3a;\n color: #e0e0e0;\n min-height: 200px;\n font-size: 1rem;\n line-height: 1.5;\n border-radius: 4px;\n outline: none;\n transition: background 0.1s, color 0.5s ease-out;\n}\n\ntextarea.scraping {\n color: transparent;\n background: linear-gradient(to bottom right, #4361ee88, #7209b788, #4cc9f088, #00a89688), #2a2a2a;\n background-size: 400% 400%;\n background-repeat: no-repeat;\n background-position: 100% 100%;\n animation: bgscroll 3s linear alternate-reverse infinite;\n}\n@keyframes bgscroll {\n 0% { background-position: 0% 0% };\n 100% { background-position: 100% 100% }\n}\n\n.controls {\n width: 100%;\n display: flex;\n flex-direction: row;\n gap: 0.5rem;\n margin-bottom: 1rem;\n}\n\nselect, button {\n background-color: #2a2a2a;\n color: #e0e0e0;\n border: 1px solid #3a3a3a;\n padding: 0.5rem;\n border-radius: 4px;\n min-width: 5rem;\n}\n\nselect {\n flex: 2;\n -webkit-appearance: none;\n}\n\nbutton {\n display: flex;\n align-items: center;\n justify-content: center;\n cursor: pointer;\n transition: background-color 0.2s;\n}\n\n#paste {\n margin-bottom: 0.5rem;\n float: right;\n}\n\nbutton:hover {\n background-color: #3a3a3a;\n}\n\n#languageHint {\n margin-bottom: 0.5rem;\n flex-wrap: warp;\n overflow-y: scroll;\n}\n#languageHint.hidden {\n display: none;\n}\n\n#languageHint > span:nth-child(1) {\n position: sticky;\n left: 0;\n background: #1e1e1e;\n margin-right: 2rem;\n}\n\n#languageHint > span:nth-child(1)::after {\n content: '';\n position: absolute;\n top: 0;\n right: 0;\n width: 2rem;\n height: 100%;\n background: linear-gradient(to right, #1e1e1e, transparent);\n pointer-events: none;\n z-index: 1;\n transform: translateX(100%);\n}\n\n#languageHint > span {\n align-content: center;\n}\n#languageHint > button {\n flex: 1\n}\n\n#submitBtn {\n transition: background 0.1s;\n}\n#submitBtn.generating,\n#submitBtn.generating:hover {\n background: linear-gradient(to right, #004b23 20%, #007200, #004b23 80%), #2a2a2a;\n background-size: 200% 100%;\n background-position: 100% 0%;\n animation: bgload 1s ease-in-out alternate-reverse infinite;\n}\n@keyframes bgload {\n 0% { background-position: 0% 0% };\n 100% { background-position: 100% 0% }\n}\n\n.audio-controls {\n display: flex;\n flex-direction: column;\n gap: 0.5rem;\n}\n\naudio, #downloadLink {\n width: 100%;\n background-color: #2a2a2a;\n color: #e0e0e0;\n}\n\n#downloadLink {\n display: block;\n box-sizing: border-box;\n text-align: center;\n padding: 0.75rem;\n text-decoration: none;\n background-color: #0072ff;\n color: white;\n border-radius: 4px;\n margin-top: 0.5rem;\n transition: background-color 0.2s;\n}\n\n#downloadLink:hover {\n background-color: #00c6ff;\n}\n\naudio {\n margin-top: 0.5rem;\n}\n\n@media (max-width:640px) {\n .container {\n box-sizing: border-box;\n width: 100%;\n height: 100vh;\n height: 100dvh;\n overflow-y: scroll;\n padding: 2rem 1rem;\n margin: 0;\n }\n\n textarea {\n height: calc(100vh - 25rem);\n height: calc(100svh - 25rem);\n }\n\n .controls {\n flex-direction: column;\n }\n\n #languageHint {\n padding-bottom: 0.75rem;\n border-bottom: solid 0.1rem #444;\n margin-bottom: 0.75rem;\n }\n}\n */\n}\n\nfunction js() {\n /*\nconst ttsForm = document.getElementById('ttsForm');\nconst textInput = document.getElementById('textInput');\nconst languageHintContainer = document.getElementById('languageHint');\nconst languageSelect = document.getElementById('languageSelect');\nconst voiceSelect = document.getElementById('voiceSelect');\nconst pasteBtn = document.getElementById('pasteBtn');\nconst submitBtn = document.getElementById('submitBtn');\nconst audioPlayer = document.getElementById('audioPlayer');\nconst downloadLink = document.getElementById('downloadLink');\n\nconst eldPromise = import('https://esm.sh/eld@1.0.1/').then((res) => res.eld).catch(err => console.warn('Failed to load eld!', err));\nconst sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));\n\nfetch(\n 'https://gist.githubusercontent.com/autowert66/02c70e0678e6fdd12da4910191640e1d/raw/msedge-tts-voices.json',\n { cache: 'force-cache' }\n).then(async (res) => {\n const { languages, voices } = await res.json();\n const voicesByLanguage = { };\n for(const voice of voices) {\n const lang = voice.match(/^[^\\-]+-[^\\-]+/);\n voicesByLanguage[lang] ||= [];\n voicesByLanguage[lang].push(voice);\n }\n\n const languageOptions = Object.entries(languages).map(([value, name]) => ({ name, value }));\n languageSelect.replaceChildren(...selectNodes(languageOptions));\n\n languageSelect.addEventListener('change', (ev) => {\n const language = languageSelect.value;\n const voices = voicesByLanguage[language];\n const voiceOptions = { Female: [], Male: [] };\n for(const voice of voices) {\n const value = voice.split(' ')[0];\n const [, _lang, id, info] = voice.match(/^([^\\-]+-[^\\-]+)-(.+) \$(.+)\$/);\n const name = id.replace(/([a-z])([A-Z0-9])/g, '$1 $2');\n voiceOptions[info] ||= [];\n voiceOptions[info].push({ name, value });\n }\n for(const key in voiceOptions) {\n voiceOptions[key].sort((a, b) => a.name.includes('Multilingual') - b.name.includes('Multilingual'));\n }\n voiceSelect.replaceChildren(...selectNodes(voiceOptions));\n });\n\n languageSelect.value = navigator.language;\n languageSelect.dispatchEvent(new Event('change'));\n});\n\nasync function onPaste() {\n const text = textInput.value.trim();\n const isUrl = text.startsWith('http') && /^https?:\\/\\/(www\\.)?[-a-zA-Z0-9@:%._\\+~#=]{2,256}\\.[a-z]{2,4}\\b([-a-zA-Z0-9@:%_\\+.~#?&//=]*)$/s.test(text);\n if(!isUrl) {\n processAfterPaste();\n return;\n }\n\n pasteBtn.disabled = true;\n textInput.disabled = true;\n textInput.classList.add('scraping');\n\n try {\n const url = 'https://markdown.download/?url=' + encodeURIComponent(text);\n const res = await fetch(url, { headers: { Accept: 'text/markdown' } });\n const markdown = await res.text();\n\n const plain = markdown\n .replace(/(?<=\\]\$).+?(?=\$)|!\\[[^]]*\\]\$[^)]*\$|(?#]+/gm, '')\n .replace(/!?\\[(.+?)\\]\$\$/g, '$1')\n .replace(/\\nhttp\\S+?$/, '')\n .replace(/^[\\t\\v ]+|[\\t\\v ]+$/gm, '');\n textInput.value = plain;\n } finally {\n pasteBtn.disabled = false;\n textInput.disabled = false;\n textInput.classList.remove('scraping');\n }\n\n processAfterPaste();\n}\n\nasync function processAfterPaste() {\n const eld = await Promise.race([eldPromise, sleep(200)]);\n if(!eld) return;\n\n const text = textInput.value.trim();\n const detection = eld.detect(text);\n console.log('eld.detect():', detection);\n // if(!detection.isReliable()) return;\n const { language } = detection;\n\n const languageOptions = Array.from(languageSelect.options, (el) => el.value + ';;;' + el.textContent);\n const matchingOptions = languageOptions.filter((lang) => lang.startsWith(language));\n if(!matchingOptions.length || languageSelect.value.startsWith(language)) {\n languageHintContainer.classList.add('hidden');\n return;\n }\n\n languageHintContainer.querySelectorAll('button').forEach((btn) => btn.remove());\n for(const langStr of matchingOptions) {\n const [lang, name] = langStr.split(';;;');\n const langBtn = document.createElement('button');\n langBtn.textContent = name;\n langBtn.dataset.lang = lang;\n langBtn.addEventListener('click', langBtnClickHandler);\n languageHintContainer.appendChild(langBtn);\n }\n\n languageHintContainer.classList.remove('hidden');\n}\nfunction langBtnClickHandler(ev) {\n ev.preventDefault();\n\n languageSelect.value = this.dataset.lang;\n languageSelect.dispatchEvent(new Event('change'));\n}\n\ntextInput.addEventListener('paste', () => setTimeout(onPaste, 1));\npasteBtn.addEventListener('click', async (ev) => {\n ev.preventDefault();\n\n const text = await navigator.clipboard.readText();\n textInput.value = text;\n\n onPaste();\n});\n\nttsForm.addEventListener('submit', async (ev) => {\n ev.preventDefault();\n\n const text = textInput.value;\n const language = languageSelect.value;\n const voice = voiceSelect.value;\n\n submitBtn.disabled = true;\n submitBtn.classList.add('generating');\n\n try {\n const response = await fetch('/generate-speech', {\n method: 'POST',\n headers: {\n 'Content-Type': 'application/json'\n },\n body: JSON.stringify({ text, language, voice })\n });\n\n if (!response.ok) {\n throw new Error('Speech generation failed');\n }\n\n const audioBlob = await response.blob();\n const audioUrl = URL.createObjectURL(audioBlob);\n\n audioPlayer.src = audioUrl;\n audioPlayer.style.display = 'block';\n audioPlayer.play();\n\n downloadLink.href = audioUrl;\n downloadLink.download = 'speech.webm';\n downloadLink.style.display = 'block';\n downloadLink.textContent = 'Download Audio';\n } catch (error) {\n console.error('Error:', error);\n alert('Failed to generate speech');\n }\n\n submitBtn.disabled = false;\n submitBtn.classList.remove('generating');\n});\n\nfunction selectNodes(data) {\n if (Array.isArray(data)) {\n return data.map(({ name, value }) => {\n const option = document.createElement('option');\n option.textContent = name;\n option.value = value;\n return option;\n });\n } else if (typeof data === 'object') {\n return Object.entries(data).reduce((groups, [groupName, options]) => {\n const group = document.createElement('optgroup');\n group.label = groupName;\n group.append(...selectNodes(options));\n groups.push(group);\n return groups;\n }, []);\n }\n return [];\n};\n */\n}\n\nconst app = new Hono();\n\n// Serve static files\napp.get(\"/\", serve(html, \"text/html\"));\napp.get(\"/styles.css\", serve(css, \"text/css\"));\napp.get(\"/main.js\", serve(js, \"text/javascript\"));\n\n// Speech generation endpoint\napp.post(\"/generate-speech\", async (c) => {\n const { text, language, voice } = await c.req.json();\n\n const tts = new MsEdgeTTS();\n await tts.setMetadata(voice, OUTPUT_FORMAT.WEBM_24KHZ_16BIT_MONO_OPUS);\n const { audioStream } = tts.toStream(escapeXML(text));\n\n let res;\n\n try {\n const rawBlob = await new Response(audioStream).blob();\n res = rawBlob;\n const metadata = await parseWebm(rawBlob);\n console.log({ metadata });\n\n const durationMs = metadata.durationMilliSeconds;\n const fixedBlob = await fm.default(rawBlob, durationMs, { logger: false });\n res = fixedBlob;\n } catch (err) {\n console.log(\n \"Fixing audio duration failed, falling back to raw stream:\",\n err,\n );\n }\n\n return new Response(res, {\n headers: {\n \"Content-Type\": \"audio/webm; codecs=opus\",\n \"Content-Disposition\": \"attachment; filename=speech.webm\",\n },\n });\n});\n\nexport default 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