(Objective-C) AI Modify Existing Image with Text Prompt

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Note: This example requires Chilkat v11.4.0 or greater.

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#import <CkoBinData.h>
#import <CkoAi.h>
#import <CkoJsonObject.h>

BOOL success = NO;

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

// Load the data from an existing image.
CkoBinData *bdImageData = [[CkoBinData alloc] init];
success = [bdImageData LoadFile: @"qa_data/jpg/kid_blue_coat.jpg"];
if (success == NO) {
    NSLog(@"%@",bdImageData.LastErrorText);
    return;
}

CkoAi *ai = [[CkoAi alloc] init];

ai.Provider = @"openai";

// Use your provider's API key.
ai.ApiKey = @"MY_API_KEY";

// Choose a model.
ai.Model = @"gpt-5";

CkoJsonObject *askParams = [[CkoJsonObject alloc] init];
[askParams UpdateString: @"image.output_format" value: @"jpeg"];
[ai SetAskParams: askParams];

[ai InputAddImageData: bdImageData summary: @""];
[ai InputAddText: @"Modify the image by replacing the blue coat with a Metallica T-shirt."];

// Give the AI some time (2 minutes).
ai.IdleTimeoutMs = [NSNumber numberWithInt:120000];

// Ask the AI for image output.
success = [ai Ask: @"image"];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

// Get the image response data.;
success = [ai GetOutputBd: bdImageData];
if (success == NO) {
    NSLog(@"%@",ai.LastErrorText);
    return;
}

[bdImageData WriteFile: @"c:/aaworkarea/out.jpg"];

NSLog(@"%@",@"Success.");

// -------------------------------
// Sample Input:
// -------------------------------
// 

// -------------------------------
// Sample Output:
// -------------------------------
//