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63 lines
2.0 KiB
63 lines
2.0 KiB
// For licensing see accompanying LICENSE.md file.
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// Copyright (C) 2022 Apple Inc. All Rights Reserved.
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import Foundation
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import CoreGraphics
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@available(iOS 16.2, macOS 13.1, *)
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extension StableDiffusionPipeline {
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/// Tyoe of processing that will be performed to generate an image
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public enum Mode {
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case textToImage
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case imageToImage
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// case inPainting
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}
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/// Image generation configuration
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public struct Configuration: Hashable {
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/// Text prompt to guide sampling
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public var prompt: String
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/// Negative text prompt to guide sampling
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public var negativePrompt: String = ""
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/// Starting image for image2image or in-painting
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public var startingImage: CGImage? = nil
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//public var maskImage: CGImage? = nil
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public var strength: Float = 1.0
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/// Number of images to generate
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public var imageCount: Int = 1
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/// Number of inference steps to perform
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public var stepCount: Int = 50
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/// Random seed which to start generation
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public var seed: UInt32 = 0
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/// Controls the influence of the text prompt on sampling process (0=random images)
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public var guidanceScale: Float = 7.5
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/// Safety checks are only performed if `self.canSafetyCheck && !disableSafety`
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public var disableSafety: Bool = false
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/// The type of Scheduler to use.
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public var schedulerType: StableDiffusionScheduler = .pndmScheduler
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/// The type of RNG to use
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public var rngType: StableDiffusionRNG = .numpyRNG
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/// Given the configuration, what mode will be used for generation
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public var mode: Mode {
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guard startingImage != nil else {
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return .textToImage
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}
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guard strength < 1.0 else {
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return .textToImage
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}
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return .imageToImage
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}
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public init(
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prompt: String
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) {
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self.prompt = prompt
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}
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}
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}
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