microsoft-cognitiveservices-speech-sdk/distrib/lib/src/sdk/SpeechSynthesisRequest.js

Microsoft Cognitive Services Speech SDK for JavaScript

"use strict";
// Copyright (c) Microsoft Corporation. All rights reserved.
// Licensed under the MIT license.
Object.defineProperty(exports, "__esModule", { value: true });
exports.SpeechSynthesisRequest = exports.SpeechSynthesisRequestInputStream = void 0;
const Exports_js_1 = require("./Exports.js");
const SpeechSynthesisRequestInputType_js_1 = require("./SpeechSynthesisRequestInputType.js");
const SpeechSynthesisRequestInputStream_js_1 = require("./SpeechSynthesisRequestInputStream.js");
var SpeechSynthesisRequestInputStream_js_2 = require("./SpeechSynthesisRequestInputStream.js");
Object.defineProperty(exports, "SpeechSynthesisRequestInputStream", { enumerable: true, get: function () { return SpeechSynthesisRequestInputStream_js_2.SpeechSynthesisRequestInputStream; } });
/**
 * Represents a speech synthesis request with support for text streaming.
 * Note: This class is in preview and may be subject to change in future versions.
 * @class SpeechSynthesisRequest
 */
class SpeechSynthesisRequest {
    /**
     * Creates a speech synthesis request.
     * @param inputType The input type for the speech synthesis request.
     */
    constructor(inputType) {
        this.privBufferedTextPieces = [];
        this.privStreamClosedBeforeReady = false;
        if (inputType !== SpeechSynthesisRequestInputType_js_1.SpeechSynthesisRequestInputType.TextStream) {
            throw new Error("Only TextStream input type is supported in this version.");
        }
        this.privInputType = inputType;
        this.privInputStream = new SpeechSynthesisRequestInputStream_js_1.SpeechSynthesisRequestInputStream(this);
        this.privProperties = new Exports_js_1.PropertyCollection();
    }
    /**
     * Gets the input type of this request.
     */
    get inputType() {
        return this.privInputType;
    }
    /**
     * Gets the input stream for writing text pieces.
     */
    get inputStream() {
        return this.privInputStream;
    }
    /**
     * Gets the properties collection for this request.
     */
    get properties() {
        return this.privProperties;
    }
    /**
     * Sets the pitch of the voice.
     */
    set pitch(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_Pitch, value);
    }
    /**
     * Sets the speaking rate of the voice.
     */
    set rate(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_Rate, value);
    }
    /**
     * Sets the volume of the voice.
     */
    set volume(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_Volume, value);
    }
    /**
     * Sets the style of the voice.
     */
    set style(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_Style, value);
    }
    /**
     * Sets the temperature of the voice synthesis.
     */
    set temperature(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_Temperature, value.toString());
    }
    /**
     * Sets the custom lexicon URL.
     */
    set customLexiconUrl(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_CustomLexiconUrl, value);
    }
    /**
     * Sets the preferred locales for the voice.
     */
    set preferLocales(value) {
        this.privProperties.setProperty(Exports_js_1.PropertyId.SpeechSynthesisRequest_PreferLocales, value);
    }
    /**
     * @internal
     * Called by InputStream when a text piece is written.
     * Buffers text if no callback is registered yet.
     */
    onTextPieceReceived(text) {
        if (this.privTextPieceCallback) {
            this.privTextPieceCallback(text);
        }
        else {
            this.privBufferedTextPieces.push(text);
        }
    }
    /**
     * @internal
     * Called by InputStream when it is closed.
     * Buffers close event if no callback is registered yet.
     */
    onInputStreamClosed() {
        if (this.privStreamCloseCallback) {
            this.privStreamCloseCallback();
        }
        else {
            this.privStreamClosedBeforeReady = true;
        }
    }
    /**
     * @internal
     * Sets the callback for receiving text pieces.
     * Flushes any buffered text pieces immediately.
     */
    set onTextPiece(callback) {
        this.privTextPieceCallback = callback;
        // Flush buffered text pieces
        for (const text of this.privBufferedTextPieces) {
            callback(text);
        }
        this.privBufferedTextPieces = [];
    }
    /**
     * @internal
     * Sets the callback for stream close events.
     * Fires immediately if stream was already closed.
     */
    set onClose(callback) {
        this.privStreamCloseCallback = callback;
        // Fire if stream was already closed before callback was set
        if (this.privStreamClosedBeforeReady) {
            this.privStreamClosedBeforeReady = false;
            callback();
        }
    }
}
exports.SpeechSynthesisRequest = SpeechSynthesisRequest;

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