SillyTavern/public/scripts/extensions/speech-recognition/index.js

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/*
TODO:
- try pseudo streaming audio by just sending chunk every X seconds and asking VOSK if it is full text.
*/
import { saveSettingsDebounced } from "../../../script.js";
import { getContext, getApiUrl, modules, extension_settings, ModuleWorkerWrapper, doExtrasFetch } from "../../extensions.js";
import { VoskSttProvider } from './vosk.js'
import { WhisperSttProvider } from './whisper.js'
import { BrowserSttProvider } from './browser.js'
import { StreamingSttProvider } from './streaming.js'
export { MODULE_NAME };
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const MODULE_NAME = 'Speech Recognition';
const DEBUG_PREFIX = "<Speech Recognition module> "
const UPDATE_INTERVAL = 100;
let inApiCall = false;
let sttProviders = {
None: null,
Browser: BrowserSttProvider,
Whisper: WhisperSttProvider,
Vosk: VoskSttProvider,
Streaming: StreamingSttProvider,
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}
let sttProvider = null
let sttProviderName = "None"
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let audioRecording = false
const constraints = { audio: { sampleSize: 16, channelCount: 1, sampleRate: 16000 } };
let audioChunks = [];
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async function moduleWorker() {
if (sttProviderName != "Streaming") {
return;
}
// API is busy
if (inApiCall) {
return;
}
try {
inApiCall = true;
const userMessageOriginal = await sttProvider.getUserMessage();
let userMessageFormatted = userMessageOriginal.trim();
if (userMessageFormatted.length > 0)
{
console.debug(DEBUG_PREFIX+"recorded transcript: \""+userMessageFormatted+"\"");
let userMessageLower = userMessageFormatted.toLowerCase();
// remove punctuation
let userMessageRaw = userMessageLower.replace(/[^\w\s\']|_/g, "").replace(/\s+/g, " ");
console.debug(DEBUG_PREFIX+"raw transcript:",userMessageRaw);
// Detect trigger words
let messageStart = -1;
if (extension_settings.speech_recognition.Streaming.triggerWordsEnabled) {
for (const triggerWord of extension_settings.speech_recognition.Streaming.triggerWords) {
const triggerPos = userMessageRaw.indexOf(triggerWord.toLowerCase());
// Trigger word not found or not starting message and just a substring
if (triggerPos == -1){ // | (triggerPos > 0 & userMessageFormatted[triggerPos-1] != " ")) {
console.debug(DEBUG_PREFIX+"trigger word not found: ", triggerWord);
}
else {
console.debug(DEBUG_PREFIX+"Found trigger word: ", triggerWord, " at index ", triggerPos);
if (triggerPos < messageStart | messageStart == -1) { // & (triggerPos + triggerWord.length) < userMessageFormatted.length)) {
messageStart = triggerPos; // + triggerWord.length + 1;
}
}
}
} else {
messageStart = 0;
}
if (messageStart == -1) {
console.debug(DEBUG_PREFIX+"message ignored, no trigger word preceding a message. Voice transcript: \""+ userMessageOriginal +"\"");
if (extension_settings.speech_recognition.Streaming.debug) {
toastr.info(
"No trigger word preceding a message. Voice transcript: \""+ userMessageOriginal +"\"",
DEBUG_PREFIX+"message ignored.",
{ timeOut: 10000, extendedTimeOut: 20000, preventDuplicates: true },
);
}
}
else{
userMessageFormatted = userMessageFormatted.substring(messageStart);
processTranscript(userMessageFormatted);
}
}
else
{
console.debug(DEBUG_PREFIX+"Received empty transcript, ignored");
}
}
catch (error) {
console.debug(error);
}
finally {
inApiCall = false;
}
}
async function processTranscript(transcript) {
try {
const transcriptOriginal = transcript;
let transcriptFormatted = transcriptOriginal.trim();
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if (transcriptFormatted.length > 0)
{
console.debug(DEBUG_PREFIX+"recorded transcript: \""+transcriptFormatted+"\"");
const messageMode = extension_settings.speech_recognition.messageMode;
console.debug(DEBUG_PREFIX+"mode: "+messageMode);
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let transcriptLower = transcriptFormatted.toLowerCase()
// remove punctuation
let transcriptRaw = transcriptLower.replace(/[^\w\s\']|_/g, "").replace(/\s+/g, " ");
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// Check message mapping
if (extension_settings.speech_recognition.messageMappingEnabled) {
console.debug(DEBUG_PREFIX+"Start searching message mapping into:",transcriptRaw)
for (const key in extension_settings.speech_recognition.messageMapping) {
console.debug(DEBUG_PREFIX+"message mapping searching: ", key,"=>",extension_settings.speech_recognition.messageMapping[key]);
if (transcriptRaw.includes(key)) {
var message = extension_settings.speech_recognition.messageMapping[key];
console.debug(DEBUG_PREFIX+"message mapping found: ", key,"=>",extension_settings.speech_recognition.messageMapping[key]);
$("#send_textarea").val(message);
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if (messageMode == "auto_send") await getContext().generate();
return;
}
}
}
console.debug(DEBUG_PREFIX+"no message mapping found, processing transcript as normal message");
switch (messageMode) {
case "auto_send":
$('#send_textarea').val("") // clear message area to avoid double message
console.debug(DEBUG_PREFIX+"Sending message")
const context = getContext();
const messageText = transcriptFormatted;
const message = {
name: context.name1,
is_user: true,
is_name: true,
send_date: Date.now(),
mes: messageText,
};
context.chat.push(message);
context.addOneMessage(message);
await context.generate();
$('#debug_output').text("<SST-module DEBUG>: message sent: \""+ transcriptFormatted +"\"");
break;
case "replace":
console.debug(DEBUG_PREFIX+"Replacing message")
$('#send_textarea').val(transcriptFormatted);
break;
case "append":
console.debug(DEBUG_PREFIX+"Appending message")
$('#send_textarea').val($('#send_textarea').val()+" "+transcriptFormatted);
break;
default:
console.debug(DEBUG_PREFIX+"Not supported stt message mode: "+messageMode)
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}
}
else
{
console.debug(DEBUG_PREFIX+"Empty transcript, do nothing");
}
}
catch (error) {
console.debug(error);
}
}
function loadNavigatorAudioRecording() {
if (navigator.mediaDevices.getUserMedia) {
console.debug(DEBUG_PREFIX+' getUserMedia supported by browser.');
let onSuccess = function(stream) {
const mediaRecorder = new MediaRecorder(stream);
$("#microphone_button").off('click').on("click", function() {
if (!audioRecording) {
mediaRecorder.start();
console.debug(mediaRecorder.state);
console.debug("recorder started");
audioRecording = true;
$("#microphone_button").toggleClass('fa-microphone fa-microphone-slash');
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}
else {
mediaRecorder.stop();
console.debug(mediaRecorder.state);
console.debug("recorder stopped");
audioRecording = false;
$("#microphone_button").toggleClass('fa-microphone fa-microphone-slash');
}
});
mediaRecorder.onstop = async function() {
console.debug(DEBUG_PREFIX+"data available after MediaRecorder.stop() called: ", audioChunks.length, " chunks");
const audioBlob = new Blob(audioChunks, { type: "audio/wav; codecs=0" });
audioChunks = [];
const transcript = await sttProvider.processAudio(audioBlob);
// TODO: lock and release recording while processing?
console.debug(DEBUG_PREFIX+"received transcript:", transcript);
processTranscript(transcript);
}
mediaRecorder.ondataavailable = function(e) {
audioChunks.push(e.data);
}
}
let onError = function(err) {
console.debug(DEBUG_PREFIX+"The following error occured: " + err);
}
navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
} else {
console.debug(DEBUG_PREFIX+"getUserMedia not supported on your browser!");
toastr.error("getUserMedia not supported", DEBUG_PREFIX+"not supported for your browser.", { timeOut: 10000, extendedTimeOut: 20000, preventDuplicates: true });
}
}
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//##############//
// STT Provider //
//##############//
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function loadSttProvider(provider) {
//Clear the current config and add new config
$("#speech_recognition_provider_settings").html("");
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// Init provider references
extension_settings.speech_recognition.currentProvider = provider;
sttProviderName = provider;
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if (!(sttProviderName in extension_settings.speech_recognition)) {
console.warn(`Provider ${sttProviderName} not in Extension Settings, initiatilizing provider in settings`);
extension_settings.speech_recognition[sttProviderName] = {};
}
$('#speech_recognition_provider').val(sttProviderName);
if (sttProviderName == "None") {
$("#microphone_button").hide();
$("#speech_recognition_message_mode_div").hide();
$("#speech_recognition_message_mapping_div").hide();
return;
}
$("#speech_recognition_message_mode_div").show();
$("#speech_recognition_message_mapping_div").show();
sttProvider = new sttProviders[sttProviderName]
// Init provider settings
$('#speech_recognition_provider_settings').append(sttProvider.settingsHtml);
// Use microphone button as push to talk
if (sttProviderName == "Browser") {
sttProvider.processTranscriptFunction = processTranscript;
sttProvider.loadSettings(extension_settings.speech_recognition[sttProviderName]);
$("#microphone_button").show();
}
if (sttProviderName == "Vosk" | sttProviderName == "Whisper") {
sttProvider.loadSettings(extension_settings.speech_recognition[sttProviderName]);
loadNavigatorAudioRecording();
$("#microphone_button").show();
}
if (sttProviderName == "Streaming") {
sttProvider.loadSettings(extension_settings.speech_recognition[sttProviderName]);
$("#microphone_button").off('click');
$("#microphone_button").hide();
}
}
function onSttProviderChange() {
const sttProviderSelection = $('#speech_recognition_provider').val();
loadSttProvider(sttProviderSelection);
saveSettingsDebounced();
}
function onSttProviderSettingsInput() {
sttProvider.onSettingsChange();
// Persist changes to SillyTavern stt extension settings
extension_settings.speech_recognition[sttProviderName] = sttProvider.settings;
saveSettingsDebounced();
console.info(`Saved settings ${sttProviderName} ${JSON.stringify(sttProvider.settings)}`);
}
//#############################//
// Extension UI and Settings //
//#############################//
const defaultSettings = {
currentProvider: "None",
messageMode: "append",
messageMappingText: "",
messageMapping: [],
messageMappingEnabled: false,
}
function loadSettings() {
if (Object.keys(extension_settings.speech_recognition).length === 0) {
Object.assign(extension_settings.speech_recognition, defaultSettings)
}
$('#speech_recognition_enabled').prop('checked',extension_settings.speech_recognition.enabled);
$('#speech_recognition_message_mode').val(extension_settings.speech_recognition.messageMode);
if (extension_settings.speech_recognition.messageMappingText.length > 0) {
$('#speech_recognition_message_mapping').val(extension_settings.speech_recognition.messageMappingText);
}
$('#speech_recognition_message_mapping_enabled').prop('checked',extension_settings.speech_recognition.messageMappingEnabled);
}
async function onMessageModeChange() {
extension_settings.speech_recognition.messageMode = $('#speech_recognition_message_mode').val();
if(sttProviderName != "Browser" & extension_settings.speech_recognition.messageMode == "auto_send") {
$("#speech_recognition_wait_response_div").show()
}
else {
$("#speech_recognition_wait_response_div").hide()
}
saveSettingsDebounced();
}
async function onMessageMappingChange() {
let array = $('#speech_recognition_message_mapping').val().split(",");
array = array.map(element => {return element.trim();});
array = array.filter((str) => str !== '');
extension_settings.speech_recognition.messageMapping = {};
for (const text of array) {
if (text.includes("=")) {
const pair = text.toLowerCase().split("=")
extension_settings.speech_recognition.messageMapping[pair[0].trim()] = pair[1].trim()
console.debug(DEBUG_PREFIX+"Added mapping", pair[0],"=>", extension_settings.speech_recognition.messageMapping[pair[0]]);
}
else {
console.debug(DEBUG_PREFIX+"Wrong syntax for message mapping, no '=' found in:", text);
}
}
$("#speech_recognition_message_mapping_status").text("Message mapping updated to: "+JSON.stringify(extension_settings.speech_recognition.messageMapping))
console.debug(DEBUG_PREFIX+"Updated message mapping", extension_settings.speech_recognition.messageMapping);
extension_settings.speech_recognition.messageMappingText = $('#speech_recognition_message_mapping').val()
saveSettingsDebounced();
}
async function onMessageMappingEnabledClick() {
extension_settings.speech_recognition.messageMappingEnabled = $('#speech_recognition_message_mapping_enabled').is(':checked');
saveSettingsDebounced()
}
$(document).ready(function () {
function addExtensionControls() {
const settingsHtml = `
<div id="speech_recognition_settings">
<div class="inline-drawer">
<div class="inline-drawer-toggle inline-drawer-header">
<b>Speech Recognition</b>
<div class="inline-drawer-icon fa-solid fa-circle-chevron-down down"></div>
</div>
<div class="inline-drawer-content">
<div>
<span>Select Speech-to-text Provider</span> </br>
<select id="speech_recognition_provider">
</select>
</div>
<div id="speech_recognition_message_mode_div">
<span>Message Mode</span> </br>
<select id="speech_recognition_message_mode">
<option value="append">Append</option>
<option value="replace">Replace</option>
<option value="auto_send">Auto send</option>
</select>
</div>
<div id="speech_recognition_message_mapping_div">
<span>Message Mapping</span>
<textarea id="speech_recognition_message_mapping" class="text_pole textarea_compact" type="text" rows="4" placeholder="Enter comma separated phrases mapping, example:\ncommand delete = /del 2,\nslash delete = /del 2,\nsystem roll = /roll 2d6,\nhey continue = /continue"></textarea>
<span id="speech_recognition_message_mapping_status"></span>
<label class="checkbox_label" for="speech_recognition_message_mapping_enabled">
<input type="checkbox" id="speech_recognition_message_mapping_enabled" name="speech_recognition_message_mapping_enabled">
<small>Enable messages mapping</small>
</label>
</div>
<form id="speech_recognition_provider_settings" class="inline-drawer-content">
</form>
</div>
</div>
</div>
`;
$('#extensions_settings').append(settingsHtml);
$('#speech_recognition_provider_settings').on('input', onSttProviderSettingsInput);
for (const provider in sttProviders) {
$('#speech_recognition_provider').append($("<option />").val(provider).text(provider));
console.debug(DEBUG_PREFIX+"added option "+provider);
}
$('#speech_recognition_provider').on('change', onSttProviderChange);
$('#speech_recognition_message_mode').on('change', onMessageModeChange);
$('#speech_recognition_message_mapping').on('change', onMessageMappingChange);
$('#speech_recognition_message_mapping_enabled').on('click', onMessageMappingEnabledClick);
const $button = $('<div id="microphone_button" class="fa-solid fa-microphone speech-toggle" title="Click to speak"></div>');
$('#send_but_sheld').prepend($button);
}
addExtensionControls(); // No init dependencies
loadSettings(); // Depends on Extension Controls and loadTtsProvider
loadSttProvider(extension_settings.speech_recognition.currentProvider); // No dependencies
const wrapper = new ModuleWorkerWrapper(moduleWorker);
setInterval(wrapper.update.bind(wrapper), UPDATE_INTERVAL); // Init depends on all the things
moduleWorker();
})