cd0b413706
Moves everything Camera related into `core/` / `Core/` so that it is better encapsulated from React Native.
Benefits:
1. Code is much better organized. Should be easier for collaborators now, and cleaner codebase for me.
2. Locking is fully atomically as you can now only configure the session through a lock/Mutex which is batch-overridable
* On iOS, this makes Camera startup time **MUCH** faster, I measured speedups from **1.5 seconds** to only **240 milliseconds** since we only lock/commit once! 🚀
* On Android, this fixes a few out-of-sync/concurrency issues like "Capture Request contains unconfigured Input/Output Surface!" since it is now a single lock-operation! 💪
3. It is easier to integrate VisionCamera outside of React Native (e.g. Native iOS Apps, NativeScript, Flutter, etc)
With this PR, VisionCamera V3 is up to **7x** faster than V2
60 lines
1.5 KiB
Swift
60 lines
1.5 KiB
Swift
//
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// PreviewView.swift
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// VisionCamera
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//
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// Created by Marc Rousavy on 30.11.22.
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// Copyright © 2022 mrousavy. All rights reserved.
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//
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import AVFoundation
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import Foundation
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import UIKit
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class PreviewView: UIView {
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/**
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Convenience wrapper to get layer as its statically known type.
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*/
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var videoPreviewLayer: AVCaptureVideoPreviewLayer {
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// swiftlint:disable force_cast
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return layer as! AVCaptureVideoPreviewLayer
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// swiftlint:enable force_cast
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}
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/**
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Gets or sets the resize mode of the PreviewView.
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*/
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var resizeMode: ResizeMode = .cover {
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didSet {
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switch resizeMode {
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case .cover:
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videoPreviewLayer.videoGravity = .resizeAspectFill
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case .contain:
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videoPreviewLayer.videoGravity = .resizeAspect
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}
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}
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}
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override public class var layerClass: AnyClass {
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return AVCaptureVideoPreviewLayer.self
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}
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func layerRectConverted(fromMetadataOutputRect rect: CGRect) -> CGRect {
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return videoPreviewLayer.layerRectConverted(fromMetadataOutputRect: rect)
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}
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func captureDevicePointConverted(fromLayerPoint point: CGPoint) -> CGPoint {
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return videoPreviewLayer.captureDevicePointConverted(fromLayerPoint: point)
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}
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init(frame: CGRect, session: AVCaptureSession) {
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super.init(frame: frame)
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videoPreviewLayer.session = session
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videoPreviewLayer.videoGravity = .resizeAspectFill
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}
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@available(*, unavailable)
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required init?(coder _: NSCoder) {
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fatalError("init(coder:) is not implemented!")
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}
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}
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