Metaleon

Metaleon is a high-performance Metal-based image and video processing library for iOS that offers real-time filtering and visual effects.

Features

• Image Filters: Apply professional-grade filters including lookup tables, vignette, blending, bilateral filters and more
• Visual Effects: Add dynamic effects like glitch, RGB spark, VHS, old film, chromatic aberration and many others
• Filter Chain: Easily create complex filter combinations with JSON-formatted filter descriptions
• Memory Optimization: Efficiently manages GPU resources using MTLHeap
• Real-time Processing: Designed for high-performance real-time camera and video processing

Supported Effects

Image Filters

• Various customizable image filters with adjustable intensity

Visual Effects

• Old Film
• VHS Camera/Tracking/Tape
• Chromatic VHS
• RGB Shift/Spark
• Glitch
• Trail
• Grid Effects
• Mirror Effects
• And many more

Usage

// Initialize a filter provider
let filterProvider = ImageFiltersProvider()

// Apply filter to a Metal texture
let filteredTexture = filterProvider.currentFilterChain?.encode(
    to: commandBuffer, 
    sourceTexture: inputTexture
)

// Adjust filter intensity
filterProvider.updateParameters(with: 0.75)

// Switch between filters
filterProvider.next() // or .prev()

Requirements

• iOS 14.0+
• Swift 5.7+
• Xcode 16.0+

Installation

Swift Package Manager

dependencies: [
    .package(url: "https://github.com/trilliwon/Metaleon.git", from: "1.0.0")
]

License

Metaleon is available under the MIT license. See the LICENSE file for more info.