Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 | import z from "zod";
import { ELEVEN_LABS_API_BASE_URL } from "../constants";
import { NoThrow } from "@/utils/NoThrow";
// API Request schemas
const VoiceSettingsSchema = z
.object({
stability: z.number().min(0).max(1).nullable().optional(),
similarity_boost: z.number().min(0).max(1).nullable().optional(),
style: z.number().min(0).max(1).nullable().optional(),
use_speaker_boost: z.boolean().nullable().optional(),
speed: z.number().min(0.25).max(4.0).nullable().optional(),
})
.optional();
const PronunciationDictionaryLocatorSchema = z.object({
pronunciation_dictionary_id: z.string(),
version_id: z.string().nullable().optional(),
});
const OutputFormatSchema = z
.enum([
"alaw_8000",
"mp3_22050_32",
"mp3_24000_48",
"mp3_44100_128",
"mp3_44100_192",
"mp3_44100_32",
"mp3_44100_64",
"mp3_44100_96",
"opus_48000_128",
"opus_48000_192",
"opus_48000_32",
"opus_48000_64",
"opus_48000_96",
"pcm_16000",
"pcm_22050",
"pcm_24000",
"pcm_32000",
"pcm_44100",
"pcm_48000",
"pcm_8000",
"ulaw_8000",
"wav_16000",
"wav_22050",
"wav_24000",
"wav_32000",
"wav_44100",
"wav_48000",
"wav_8000",
])
.default("mp3_44100_128");
const ApplyTextNormalizationSchema = z.enum(["auto", "on", "off"]).default("auto");
// Input schema (camelCase)
const TextToSpeechInputSchema = z.object({
voiceID: z.string(),
text: z.string(),
modelID: z.string().default("eleven_multilingual_v2"),
voiceSettings: VoiceSettingsSchema,
pronunciationDictionaryLocators: z.array(PronunciationDictionaryLocatorSchema).max(3).nullable().optional(),
seed: z.number().int().min(0).max(4294967295).nullable().optional(),
previousText: z.string().nullable().optional(),
nextText: z.string().nullable().optional(),
previousRequestIDs: z.array(z.string()).max(3).nullable().optional(),
nextRequestIDs: z.array(z.string()).max(3).nullable().optional(),
languageCode: z.string().nullable().optional(),
// usePVCAsIVC: z.boolean().default(false),
applyTextNormalization: ApplyTextNormalizationSchema,
applyLanguageTextNormalization: z.boolean().default(false),
outputFormat: OutputFormatSchema,
enableLogging: z.boolean().default(true),
optimizeStreamingLatency: z.number().int().min(0).max(4).nullable().optional(),
});
// Types
export type VoiceSettings = z.infer<typeof VoiceSettingsSchema>;
export type PronunciationDictionaryLocator = z.infer<typeof PronunciationDictionaryLocatorSchema>;
export type OutputFormat = z.infer<typeof OutputFormatSchema>;
export type ApplyTextNormalization = z.infer<typeof ApplyTextNormalizationSchema>;
export type TextToSpeechInput = z.infer<typeof TextToSpeechInputSchema>;
// Data fetching function
export async function textToSpeech(input: TextToSpeechInput) {
// Validate input
const validatedInput = TextToSpeechInputSchema.parse(input);
// Build URL with query parameters
const url = new URL(`${ELEVEN_LABS_API_BASE_URL}/text-to-speech/${validatedInput.voiceID}`);
url.searchParams.append("output_format", validatedInput.outputFormat);
url.searchParams.append("enable_logging", String(validatedInput.enableLogging));
if (validatedInput.optimizeStreamingLatency !== undefined && validatedInput.optimizeStreamingLatency !== null) {
url.searchParams.append("optimize_streaming_latency", String(validatedInput.optimizeStreamingLatency));
}
// Build request body (convert camelCase to snake_case)
const requestBody: Record<string, unknown> = {
text: validatedInput.text,
model_id: validatedInput.modelID,
// use_pvc_as_ivc: validatedInput.usePVCAsIVC,
use_pvc_as_ivc: false,
apply_text_normalization: validatedInput.applyTextNormalization,
apply_language_text_normalization: validatedInput.applyLanguageTextNormalization,
};
if (validatedInput.voiceSettings) {
requestBody.voice_settings = {
stability: validatedInput.voiceSettings.stability,
similarity_boost: validatedInput.voiceSettings.similarity_boost,
style: validatedInput.voiceSettings.style,
use_speaker_boost: validatedInput.voiceSettings.use_speaker_boost,
speed: validatedInput.voiceSettings.speed,
};
}
if (validatedInput.languageCode) {
requestBody.language_code = validatedInput.languageCode;
}
if (validatedInput.pronunciationDictionaryLocators) {
requestBody.pronunciation_dictionary_locators = validatedInput.pronunciationDictionaryLocators.map((loc) => ({
pronunciation_dictionary_id: loc.pronunciation_dictionary_id,
version_id: loc.version_id,
}));
}
if (validatedInput.seed !== undefined && validatedInput.seed !== null) {
requestBody.seed = validatedInput.seed;
}
if (validatedInput.previousText) {
requestBody.previous_text = validatedInput.previousText;
}
if (validatedInput.nextText) {
requestBody.next_text = validatedInput.nextText;
}
if (validatedInput.previousRequestIDs) {
requestBody.previous_request_ids = validatedInput.previousRequestIDs;
}
if (validatedInput.nextRequestIDs) {
requestBody.next_request_ids = validatedInput.nextRequestIDs;
}
const response = await fetch(url.toString(), {
method: "POST",
headers: {
"Content-Type": "application/json",
},
body: JSON.stringify(requestBody),
});
if (!response.ok) {
const errorText = await response.text();
return NoThrow.error(new Error(`ElevenLabs API error (${response.status}): ${errorText}`));
}
// Return the audio data as ArrayBuffer
return NoThrow.success(await response.blob());
}
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