(Objective-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 Objective-C Library Downloads MAC OS X (Cocoa) Libs iOS Libs

#import <CkoHttp.h>
#import <NSString.h>
#import <CkoStringBuilder.h>
#import <CkoBinData.h>

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

CkoHttp *http = [[CkoHttp alloc] init];
BOOL success;

http.Login = @"apikey";
http.Password = @"my_apikey";
http.BasicAuth = YES;

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

CkoStringBuilder *sbUrl = [[CkoStringBuilder alloc] init];
[sbUrl Append: myBaseUrl];
[sbUrl Append: @"/v1/synthesize?accept=ACCEPT_TYPE&voice=CHOSEN_VOICE&text=TEXT_TO_SYNTHESIZE"];

// Choose "audio/wav" for the output file type.
int numReplaced = [[sbUrl Replace: @"ACCEPT_TYPE" replacement: [http UrlEncode: @"audio/wav"]] intValue];
// See the choices for voices at https://cloud.ibm.com/apidocs/text-to-speech#synthesize-audio-get
numReplaced = [[sbUrl Replace: @"CHOSEN_VOICE" replacement: @"en-US_MichaelVoice"] intValue];
NSString *textToSynthesize = @"When life gives you lemons, order the lobster tail.";
numReplaced = [[sbUrl Replace: @"TEXT_TO_SYNTHESIZE" replacement: [http UrlEncode: textToSynthesize]] intValue];

// Send the GET to synthesize the voice.
// The response file will be contained in bdResponseBody
CkoBinData *bdResponseBody = [[CkoBinData alloc] init];
success = [http QuickGetBd: [sbUrl GetAsString] binData: bdResponseBody];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

int respStatusCode = [http.LastStatus intValue];
NSLog(@"%@%d",@"response status code = ",respStatusCode);

if (respStatusCode == 200) {
    success = [bdResponseBody WriteFile: @"qa_output/lobster.wav"];
    NSLog(@"%@",@"Success!");
}
else {
    NSLog(@"%@",[bdResponseBody GetString: @"utf-8"]);
}