EEMetalPixelViewer

This is a set of Swift classes for iOS that are used for efficient presentation of pixel buffers on the screen, using Metal. This includes support for a myriad of pixel formats, including both planar and packed image data, as well as support for efficiently presenting Core Video CVImageBuffer images.

The base class, EETextureViewer, is a UIView, deriving from MTKView, which makes it super easy to get going and requires absolutely no dealing with Metal, writing shaders, etc.

Key Features

• Easy to use, MTKView-based UIView object
• Flexible support for a massive set of pixel formats, including both RGB and YUV, as well as planar and packed formats
• Support for the UIView UIContentMode settings for easy control of scaling and positioining of your pixel data within the UIView
• Support for CVImageBuffer images as an input, for working with video, camera sources, etc.
• Optimized implementation with little to no CPU usage, no copied buffers, etc. All format conversions and such are done in the GPU.

Supported Pixel Formats

| Pixel Format | Supported | BPP | Planes | | :----------- |:------------:|:---:|:------:| | kCVPixelFormatType_420YpCbCr8Planar|✅|16|3| | kCVPixelFormatType_420YpCbCr8PlanarFullRange|✅|16|3| | kCVPixelFormatType_422YpCbCr8|✅|16|1| | kCVPixelFormatType_420YpCbCr8BiPlanarVideoRange|✅|16|2| | kCVPixelFormatType_420YpCbCr8BiPlanarFullRange|✅|16|2| | kCVPixelFormatType_444YpCbCr8|✅|24|1| | kCVPixelFormatType_4444YpCbCrA8|✅|32|1| | kCVPixelFormatType_4444AYpCbCr8|✅|32|1| | kCVPixelFormatType_24RGB|✅|24|1| | kCVPixelFormatType_24BGR|✅|24|1| | kCVPixelFormatType_32ARGB|✅|32|1| | kCVPixelFormatType_32BGRA|✅|32|1| | kCVPixelFormatType_32ABGR|✅|32|1| | kCVPixelFormatType_32RGBA|✅|32|1| | kCVPixelFormatType_16LE555|✅|16|1| | kCVPixelFormatType_16LE5551|✅|16|1| | kCVPixelFormatType_16LE565|✅|16|1|