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

Synthesizes text to audio that is spoken in the specified voice.

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

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

void ChilkatSample(void)
    {
    HCkHttp http;
    BOOL success;
    const char *myBaseUrl;
    HCkStringBuilder sbUrl;
    int numReplaced;
    const char *textToSynthesize;
    HCkBinData bdResponseBody;
    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);

    // 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?accept=ACCEPT_TYPE&voice=CHOSEN_VOICE&text=TEXT_TO_SYNTHESIZE");

    // Choose "audio/wav" for the output file type.
    numReplaced = CkStringBuilder_Replace(sbUrl,"ACCEPT_TYPE",CkHttp_urlEncode(http,"audio/wav"));
    // See the choices for voices at https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio-get
    numReplaced = CkStringBuilder_Replace(sbUrl,"CHOSEN_VOICE","en-US_MichaelVoice");
    textToSynthesize = "When life gives you lemons, order the lobster tail.";
    numReplaced = CkStringBuilder_Replace(sbUrl,"TEXT_TO_SYNTHESIZE",CkHttp_urlEncode(http,textToSynthesize));

    // Send the GET to synthesize the voice.
    // The response file will be contained in bdResponseBody
    bdResponseBody = CkBinData_Create();
    success = CkHttp_QuickGetBd(http,CkStringBuilder_getAsString(sbUrl),bdResponseBody);
    if (success == FALSE) {
        printf("%s\n",CkHttp_lastErrorText(http));
        CkHttp_Dispose(http);
        CkStringBuilder_Dispose(sbUrl);
        CkBinData_Dispose(bdResponseBody);
        return;
    }

    respStatusCode = CkHttp_getLastStatus(http);
    printf("response status code = %d\n",respStatusCode);

    if (respStatusCode == 200) {
        success = CkBinData_WriteFile(bdResponseBody,"qa_output/lobster.wav");
        printf("Success!\n");
    }
    else {
        printf("%s\n",CkBinData_getString(bdResponseBody,"utf-8"));
    }



    CkHttp_Dispose(http);
    CkStringBuilder_Dispose(sbUrl);
    CkBinData_Dispose(bdResponseBody);

    }