(C) IBM Cloud - Text to Speech - Synthesize Audio (POST)

Synthesizes text to audio that is spoken in the specified voice. Uses a POST which allows for more text to be synthesized.

For more information, see https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio

Chilkat C/C++ Library Downloads
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#include <C_CkHttp.h>
#include <C_CkStringBuilder.h>
#include <C_CkJsonObject.h>
#include <C_CkHttpResponse.h>

void ChilkatSample(void)
    {
    HCkHttp http;
    BOOL success;
    const char *myBaseUrl;
    HCkStringBuilder sbUrl;
    HCkJsonObject json;
    HCkHttpResponse resp;
    int respStatusCode;

    // This example assumes the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    http = CkHttp_Create();

    CkHttp_putLogin(http,"apikey");
    CkHttp_putPassword(http,"my_apikey");
    CkHttp_putBasicAuth(http,TRUE);

    // Send the following request:

    // curl -X POST -u "apikey:{apikey}" 
    //    --header "Content-Type: application/json" 
    //    --header "Accept: audio/wav" 
    //    --data "{\"text\":\"When life gives you lemons, order the lobster tail.\"}" 
    //    --output lobster.wav "{url}/v1/synthesize?voice=en-US_AllisonV3Voice"

    // Use your base URL shown in the credentials web page (below your apikey)
    myBaseUrl = "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8";

    sbUrl = CkStringBuilder_Create();
    CkStringBuilder_Append(sbUrl,myBaseUrl);
    CkStringBuilder_Append(sbUrl,"/v1/synthesize?voice=en-US_AllisonV3Voice");

    CkHttp_putAccept(http,"audio/wav");

    json = CkJsonObject_Create();
    CkJsonObject_UpdateString(json,"text","When life gives you lemons, order the lobster tail.");

    resp = CkHttp_PostJson3(http,CkStringBuilder_getAsString(sbUrl),"application/json",json);
    if (CkHttp_getLastMethodSuccess(http) == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbUrl);
        CkJsonObject_Dispose(json);
        return;
    }

    respStatusCode = CkHttpResponse_getStatusCode(resp);
    printf("response status code = %d\n",respStatusCode);

    if (respStatusCode == 200) {
        success = CkHttpResponse_SaveBodyBinary(resp,"qa_output/lobster.wav");
        printf("Success!\n");
    }
    else {
        printf("%s\n",CkHttpResponse_bodyStr(resp));
    }

    CkHttpResponse_Dispose(resp);


    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbUrl);
    CkJsonObject_Dispose(json);

    }