Objective-C

OpenAI (ChatGPT) Create Transcription

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Show how to transcribe audio to text. Objective-C

#import <CkoHttp.h>
#import <CkoHttpRequest.h>
#import <CkoHttpResponse.h>
#import <CkoStringBuilder.h>
#import <CkoJsonObject.h>
#import <NSString.h>

BOOL success = NO;

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

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

// Implements the following CURL command:

// curl https://api.openai.com/v1/audio/transcriptions \
//   -H "Authorization: Bearer $OPENAI_API_KEY" \
//   -H "Content-Type: multipart/form-data" \
//   -F file="@/path/to/file/audio.mp3" \
//   -F model="whisper-1"

// Use the following online tool to generate HTTP code from a CURL command
// Convert a cURL Command to HTTP Source Code

CkoHttpRequest *req = [[CkoHttpRequest alloc] init];
req.HttpVerb = @"POST";
req.Path = @"/v1/audio/transcriptions";
req.ContentType = @"multipart/form-data";
success = [req AddFileForUpload2: @"file" path: @"qa_data/mp3/Conversation-with-39-year-old-male-Virginia_afccal000227_001_00-03-37.mp3" contentType: @"audio/mpeg"];

[req AddParam: @"model" value: @"whisper-1"];

[req AddHeader: @"Expect" value: @"100-continue"];
// This is NOT a real key.  Change the "sk-vi...." to your own key.
[req AddHeader: @"Authorization" value: @"Bearer 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"];

CkoHttpResponse *resp = [[CkoHttpResponse alloc] init];
success = [http HttpSReq: @"api.openai.com" port: [NSNumber numberWithInt: 443] ssl: YES request: req response: resp];
if (success == NO) {
    NSLog(@"%@",http.LastErrorText);
    return;
}

CkoStringBuilder *sbResponseBody = [[CkoStringBuilder alloc] init];
[resp GetBodySb: sbResponseBody];

CkoJsonObject *jResp = [[CkoJsonObject alloc] init];
[jResp LoadSb: sbResponseBody];
jResp.EmitCompact = NO;

NSLog(@"%@",@"Response Body:");
NSLog(@"%@",[jResp Emit]);

int respStatusCode = [resp.StatusCode intValue];
NSLog(@"%@%d",@"Response Status Code = ",respStatusCode);
if (respStatusCode >= 400) {
    NSLog(@"%@",@"Response Header:");
    NSLog(@"%@",resp.Header);
    NSLog(@"%@",@"Failed.");
    return;
}

// Sample JSON response:
// (Sample code for parsing the JSON response is shown below)

// {
//   "text": "Imagine the wildest idea that you've ever had, and you're curious about how it might scale to something that's a 100, a 1,000 times bigger. This is a place where you can get to do that."
// }

// Sample code for parsing the JSON response...
// Use the following online tool to generate parsing code from sample JSON:
// Generate Parsing Code from JSON

NSString *text = [jResp StringOf: @"text"];