com.ibm.actions.TextAction.java Source code

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Here is the source code for com.ibm.actions.TextAction.java

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// (C) Copyright IBM Corporation 2017, 2017

// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at

//      http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package com.ibm.actions;

import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import javax.faces.bean.ManagedBean;
import javax.faces.bean.RequestScoped;
import javax.faces.bean.SessionScoped;
import javax.faces.bean.ViewScoped;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;

import com.ibm.watson.developer_cloud.text_to_speech.v1.TextToSpeech;
import com.ibm.watson.developer_cloud.text_to_speech.v1.model.AudioFormat;
import com.ibm.watson.developer_cloud.text_to_speech.v1.model.Voice;
import com.ibm.watson.developer_cloud.text_to_speech.v1.util.WaveUtils;

import org.apache.commons.codec.binary.Base64;
import org.apache.commons.io.*;

@ManagedBean
@SessionScoped
public class TextAction {
    private String text;
    private String TEXTUSERNAME;
    private String TEXTPASSWORD;
    private String audioStr;

    public String getAudioStr() {
        return audioStr;
    }

    public void setAudioStr(String audioStr) {
        this.audioStr = audioStr;
    }

    public TextAction() {
        TEXTUSERNAME = System.getenv("TEXTUSERNAME");
        TEXTPASSWORD = System.getenv("TEXTPASSWORD");

    }

    public String getText() {
        return text;
    }

    public void setText(String text) {
        this.text = text;
    }

    public String navigate() {
        audioStr = "";
        return "textHome";
    }

    //method for converting text to audio file and make it available for download 
    public void download() {
        System.out.println("Download");
        TextToSpeech service = new TextToSpeech();
        service.setUsernameAndPassword(TEXTUSERNAME, TEXTPASSWORD);
        try {
            FacesContext fc = FacesContext.getCurrentInstance();
            ExternalContext ec = fc.getExternalContext();
            ec.responseReset();

            InputStream stream = service.synthesize(text, Voice.EN_ALLISON, AudioFormat.WAV).execute();
            InputStream audiostream = WaveUtils.reWriteWaveHeader(stream);

            ec.setResponseContentType("audio/wav");
            ec.setResponseHeader("Content-Disposition", "attachment;filename=audio.wav");
            OutputStream out = ec.getResponseOutputStream();

            byte[] buffer = new byte[1024];
            int length = 0;
            while ((length = audiostream.read(buffer)) > 0) {
                out.write(buffer, 0, length);
            }

            fc.responseComplete();
            audiostream.close();
            stream.close();
            out.close();
            System.out.println("done");
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

    //method for converting text to audio stream
    public void speak() {
        System.out.println("Speak");
        TextToSpeech service = new TextToSpeech();
        service.setUsernameAndPassword(TEXTUSERNAME, TEXTPASSWORD);
        try {

            InputStream stream = service.synthesize(text, Voice.EN_ALLISON, AudioFormat.WAV).execute();
            InputStream audiostream = WaveUtils.reWriteWaveHeader(stream);

            byte[] bytes = IOUtils.toByteArray(audiostream);
            audioStr = "data:audio/wav;base64," + Base64.encodeBase64String(bytes);
            System.out.println("done");
        } catch (Exception e) {
            e.printStackTrace();
        }

    }

}