使用React Native进行Google Cloud演讲

Question

我正在尝试使用Google Cloud Speech API，因此我可以传递音频文件并接收翻译文本但我仍然坚持使用集成。我已经有api密钥和所需的一切，但无法找到如何使用它本身的反应。在文档中只有node.js的解释（来自javascript部分）。还有几个库已过时或只支持一个操作系统。有人成功了吗？

文档中的node.js示例：

// Imports the Google Cloud client library
const Speech = require('@google-cloud/speech');

// Your Google Cloud Platform project ID
const projectId = 'YOUR_PROJECT_ID';

// Instantiates a client
const speechClient = Speech({
  projectId: projectId
});

// The name of the audio file to transcribe
const fileName = './resources/audio.raw';

// The audio file's encoding and sample rate
const options = {
  encoding: 'LINEAR16',
  sampleRate: 16000
};

// Detects speech in the audio file
speechClient.recognize(fileName, options)
  .then((results) => {
    const transcription = results[0];
    console.log(`Transcription: ${transcription}`);
  });

Answer 1

将此服务器部署到Heroku，然后从您的react本机应用程序发送帖子或获取请求到此服务器并在您的应用程序上获得结果。要发送帖子或获取请求，请使用Axios库https://github.com/axios/axios

Answer 2

您可以使用谷歌应用引擎部署代码，并从react-native发送邮件请求。还需要配置和使用谷歌云存储来存储音频文件进行转换。这是我的服务器代码。

const format = require('util').format;
const fs = require('fs');
const express = require('express');
const multer  = require('multer');
const requestHttp = require('request');
const {Storage} = require('@google-cloud/storage');

// Instantiate a storage client
const storage = new Storage();

// const upload = multer();
const app = express();

// Imports the Google Cloud client library
const speech = require('@google-cloud/speech');

// Creates a client
const client = new speech.SpeechClient();

/**
 * TODO(developer): Uncomment the following lines before running the sample.
 */
const encoding = 'LINEAR16';
const sampleRateHertz = 16000;
const languageCode = 'en-US';

  const upload = multer({
    storage: multer.memoryStorage(),
    limits: {
      fileSize: 5 * 1024 * 1024, // no larger than 5mb, you can change as needed.
    },
  });

  const bucket = storage.bucket(process.env.GCLOUD_STORAGE_BUCKET);


app.post('/upload', upload.single('file') , async (req, res) => {

    const file = await req.file
    if (!file) {
      const error = new Error('Please upload a file')
      error.httpStatusCode = 400
      return next(error)
    }

    // Create a new blob in the bucket and upload the file data.
    const blob = bucket.file(req.file.originalname);
    const blobStream = blob.createWriteStream({
      resumable: false,
    });

    blobStream.on('error', err => {
      next(err);
    });

    blobStream.on('finish', async () => {
        // The public URL can be used to directly access the file via HTTP.
        const publicUrl = await format(
          `https://storage.googleapis.com/${bucket.name}/${blob.name}`
        );
        const request = {
            config: {
              encoding: encoding,
              sampleRateHertz: sampleRateHertz,
              languageCode: languageCode,
            },
            audio: {
                uri: 'gs://YOUR-Bucket-Name/File-name.ext'
            } 
          };
        // Stream the audio to the Google Cloud Speech API
        const [response] = await client.recognize(request);
        const transcription = response.results
          .map(result => result.alternatives[0].transcript)
          .join('\n');
        console.log(`Transcription: `, transcription);
        res.status(200)
            .send({
            success: 'true',
            message: 'Text retrieved successfully',
            text: transcription
            })
            .end();

      });
      blobStream.end(req.file.buffer);
});


const PORT = process.env.PORT || 8080;
app.listen(PORT, () => {
  console.log(`App listening on port ${PORT}`);
  console.log('Press Ctrl+C to quit.');
});