(Swift 3,4,5...) 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 Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    let http = CkoHttp()!
    var success: Bool

    http.login = "apikey"
    http.password = "my_apikey"
    http.basicAuth = 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)
    var myBaseUrl: String? = "https://api.us-south.text-to-speech.watson.cloud.ibm.com/instances/31941e96-7b89-4d56-8993-9cd8f18ec2d8"

    let sbUrl = CkoStringBuilder()!
    sbUrl.append(myBaseUrl)
    sbUrl.append("/v1/synthesize?voice=en-US_AllisonV3Voice")

    http.accept = "audio/wav"

    let json = CkoJsonObject()!
    json.update("text", value: "When life gives you lemons, order the lobster tail.")

    var resp: CkoHttpResponse? = http.postJson3(sbUrl.getAsString(), contentType: "application/json", json: json)
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    var respStatusCode: Int = resp!.statusCode.intValue
    print("response status code = \(respStatusCode)")

    if respStatusCode == 200 {
        success = resp!.saveBodyBinary("qa_output/lobster.wav")
        print("Success!")
    }
    else {
        print("\(resp!.bodyStr!)")
    }

    resp = nil

}