'use strict';
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/**
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* Copyright (c) 2017 Baidu.com, Inc. All Rights Reserved
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
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* an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations under the License.
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*
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* @file AipSpeech
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* @author baiduAip
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*/
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const BaseClient = require('./client/baseClient');
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const RequestInfo = require('./client/requestInfo');
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const objectTools = require('./util/objectTools');
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const HttpClientVoiceASR = require('./http/httpClientVoiceASR');
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const HttpClientVoiceTTS = require('./http/httpClientVoiceTTS');
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const code = require('./const/code');
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const httpHeader = require('./const/httpHeader');
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const METHOD_POST = 'POST';
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const CONTENT_TYPE_JSON = 'application/json';
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const HOST_VOP = 'vop.baidu.com';
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const HOST_TSN = 'tsn.baidu.com';
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const PATH_VOP = '/server_api';
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const PATH_VOP_PRO = '/pro_api';
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const PATH_TTS = '/text2audio';
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/**
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* AipSpeech类，构造调用语音接口
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*
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* @class
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* @extends BaseClient
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* @constructor
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* @param {string} appid appid.
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* @param {string} ak access key.
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* @param {string} sk security key.
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*/
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class AipSpeech extends BaseClient {
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constructor(appId, ak, sk) {
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// 在speech.baidu.com上创建的应用需要跳过此项权限检查
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super(appId, ak, sk, {isSkipScopeCheck: true});
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}
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recognizePro(buffer, format, rate, options) {
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let param = {
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speech: buffer && buffer.toString(code.BASE64),
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format: format,
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rate: rate,
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channel: 1,
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len: buffer && buffer.toString(code.BIN).length
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};
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return this.asrImplPro(objectTools.merge(param, options));
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}
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recognize(buffer, format, rate, options) {
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let param = {
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speech: buffer && buffer.toString(code.BASE64),
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format: format,
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rate: rate,
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channel: 1,
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len: buffer && buffer.toString(code.BIN).length
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};
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return this.asrImpl(objectTools.merge(param, options));
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}
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recognizeByUrl(url, callback, format, rate, options) {
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let param = {
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url: url,
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format: format,
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rate: rate,
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channel: 1,
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callback: callback
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};
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return this.asrImpl(objectTools.merge(param, options));
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}
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asrImpl(param) {
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return this.asrImplPath(param, PATH_VOP);
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}
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asrImplPro(param) {
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return this.asrImplPath(param, PATH_VOP_PRO);
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}
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asrImplPath(param, url) {
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let httpClient = new HttpClientVoiceASR();
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let requestInfo = new RequestInfo(url, param, METHOD_POST, false, {
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[httpHeader.CONTENT_TYPE]: CONTENT_TYPE_JSON
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});
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requestInfo.setHost(HOST_VOP);
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return this.doRequest(requestInfo, httpClient);
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}
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text2audio(text, options) {
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let param = {
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tex: text,
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lan: 'zh',
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ctp: 1
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};
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return this.ttsImpl(objectTools.merge(param, options));
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}
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ttsImpl(param) {
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let httpClient = new HttpClientVoiceTTS();
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let requestInfo = new RequestInfo(PATH_TTS,
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param, METHOD_POST, true);
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requestInfo.setHost(HOST_TSN);
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return this.doRequest(requestInfo, httpClient);
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}
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}
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module.exports = AipSpeech;
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