81 lines
2.7 KiB
Objective-C
81 lines
2.7 KiB
Objective-C
//
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// SCManagedCapturePreviewLayerController.h
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// Snapchat
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//
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// Created by Liu Liu on 5/5/15.
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// Copyright (c) 2015 Snapchat, Inc. All rights reserved.
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//
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#import <SCCameraFoundation/SCManagedVideoDataSource.h>
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#import <SCFoundation/SCAssertWrapper.h>
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#import <SCGhostToSnappable/SCGhostToSnappableSignal.h>
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#import <AVFoundation/AVFoundation.h>
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#import <Foundation/Foundation.h>
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#import <Metal/Metal.h>
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#import <UIKit/UIKit.h>
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@protocol SCCapturer;
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@class LSAGLView, SCBlackCameraDetector, SCManagedCapturePreviewLayerController;
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@protocol SCManagedCapturePreviewLayerControllerDelegate
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- (SCBlackCameraDetector *)blackCameraDetectorForManagedCapturePreviewLayerController:
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(SCManagedCapturePreviewLayerController *)controller;
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- (sc_create_g2s_ticket_f)g2sTicketForManagedCapturePreviewLayerController:
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(SCManagedCapturePreviewLayerController *)controller;
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@end
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/**
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* SCManagedCapturePreviewLayerController controls display of frame in a view. The controller has 3
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* different methods for this.
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* AVCaptureVideoPreviewLayer: This is a feed coming straight from the camera and does not allow any
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* image processing or modification of the frames displayed.
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* LSAGLView: OpenGL based video for displaying video that is being processed (Lenses etc.)
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* CAMetalLayer: Metal layer drawing textures on a vertex quad for display on screen.
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*/
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@interface SCManagedCapturePreviewLayerController : NSObject <SCManagedSampleBufferDisplayController>
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@property (nonatomic, strong, readonly) UIView *view;
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@property (nonatomic, strong, readonly) AVCaptureVideoPreviewLayer *videoPreviewLayer;
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@property (nonatomic, strong, readonly) LSAGLView *videoPreviewGLView;
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@property (nonatomic, weak) id<SCManagedCapturePreviewLayerControllerDelegate> delegate;
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+ (instancetype)sharedInstance;
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- (void)pause;
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- (void)resume;
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- (UIView *)newStandInViewWithRect:(CGRect)rect;
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- (void)setManagedCapturer:(id<SCCapturer>)managedCapturer;
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// This method returns a token that you can hold on to. As long as the token is hold,
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// an outdated view will be hold unless the app backgrounded.
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- (NSString *)keepDisplayingOutdatedPreview;
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// End displaying the outdated frame with an issued keep token. If there is no one holds
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// any token any more, this outdated view will be flushed.
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- (void)endDisplayingOutdatedPreview:(NSString *)keepToken;
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// Create views for Metal, this method need to be called on the main thread.
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- (void)setupPreviewLayer;
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// Create render pipeline state, setup shaders for Metal, this need to be called off the main thread.
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- (void)setupRenderPipeline;
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- (void)applicationDidEnterBackground;
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- (void)applicationWillEnterForeground;
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- (void)applicationWillResignActive;
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- (void)applicationDidBecomeActive;
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@end
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