(DataFlex) 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.

Note: This example requires Chilkat v11.0.0 or greater.

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

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoHttp
    String sMyBaseUrl
    Handle hoSbUrl
    Variant vJson
    Handle hoJson
    String sUrl
    Variant vResp
    Handle hoResp
    Integer iRespStatusCode
    String sTemp1

    Move False To iSuccess

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

    Get Create (RefClass(cComChilkatHttp)) To hoHttp
    If (Not(IsComObjectCreated(hoHttp))) Begin
        Send CreateComObject of hoHttp
    End

    Set ComLogin Of hoHttp To "apikey"
    Set ComPassword Of hoHttp To "my_apikey"
    Set ComBasicAuth Of hoHttp To 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)
    Move "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8" To sMyBaseUrl

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbUrl
    If (Not(IsComObjectCreated(hoSbUrl))) Begin
        Send CreateComObject of hoSbUrl
    End
    Get ComAppend Of hoSbUrl sMyBaseUrl To iSuccess
    Get ComAppend Of hoSbUrl "/v1/synthesize?voice=en-US_AllisonV3Voice" To iSuccess

    Set ComAccept Of hoHttp To "audio/wav"

    Get Create (RefClass(cComChilkatJsonObject)) To hoJson
    If (Not(IsComObjectCreated(hoJson))) Begin
        Send CreateComObject of hoJson
    End
    Get ComUpdateString Of hoJson "text" "When life gives you lemons, order the lobster tail." To iSuccess

    Get ComGetAsString Of hoSbUrl To sUrl
    Get Create (RefClass(cComChilkatHttpResponse)) To hoResp
    If (Not(IsComObjectCreated(hoResp))) Begin
        Send CreateComObject of hoResp
    End
    Get pvComObject of hoJson to vJson
    Get pvComObject of hoResp to vResp
    Get ComHttpJson Of hoHttp "POST" sUrl vJson "application/json" vResp To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoHttp To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get ComStatusCode Of hoResp To iRespStatusCode
    Showln "response status code = " iRespStatusCode

    If (iRespStatusCode = 200) Begin
        Get ComSaveBodyBinary Of hoResp "qa_output/lobster.wav" To iSuccess
        Showln "Success!"
    End
    Else Begin
        Get ComBodyStr Of hoResp To sTemp1
        Showln sTemp1
    End



End_Procedure