64 lines
3.1 KiB
Objective-C
64 lines
3.1 KiB
Objective-C
//
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// FrameProcessorPlugin.h
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// VisionCamera
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//
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// Created by Marc Rousavy on 01.05.21.
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// Copyright © 2021 mrousavy. All rights reserved.
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//
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#ifndef FrameProcessorPlugin_h
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#define FrameProcessorPlugin_h
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#import <Foundation/Foundation.h>
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#import "FrameProcessorPluginRegistry.h"
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#import "Frame.h"
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@protocol FrameProcessorPluginBase
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+ (id) callback:(Frame*)frame withArgs:(NSArray<id>*)args;
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@end
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#define VISION_CONCAT2(A, B) A##B
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#define VISION_CONCAT(A, B) VISION_CONCAT2(A, B)
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/**
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* Use this Macro to register the given function as a Frame Processor.
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* * Make sure the given function is a C-style function with the following signature: static inline id callback(Frame* frame, NSArray* args)
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* * Make sure the given function's name is unique across other frame processor plugins
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* * Make sure your frame processor returns a Value that can be converted to JS
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* * Make sure to use this Macro in an @implementation, not @interface
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*
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* The JS function will have the same name as the given Objective-C function, but with a "__" prefix.
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* Make sure to add that function to the babel.config.js under reanimated's "globals" option, and add TypeScript type declarations.
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*/
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#define VISION_EXPORT_FRAME_PROCESSOR(frame_processor) \
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\
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+(void)load \
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{ \
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[FrameProcessorPluginRegistry addFrameProcessorPlugin:@"__" @ #frame_processor callback:^id(Frame* frame, NSArray<id>* args) { \
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return frame_processor(frame, args); \
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}]; \
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}
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/**
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* Same as VISION_EXPORT_FRAME_PROCESSOR, but uses __attribute__((constructor)) for
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* registration. Useful for registering swift classes that forbids use of +(void)load.
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*/
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#define VISION_EXPORT_SWIFT_FRAME_PROCESSOR(name, objc_name) \
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objc_name : NSObject<FrameProcessorPluginBase> \
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@end \
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\
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@interface objc_name (FrameProcessorPlugin) \
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@end \
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@implementation objc_name (FrameProcessorPlugin) \
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\
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+(void)load \
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{ \
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[FrameProcessorPluginRegistry addFrameProcessorPlugin:@"__" @ #name callback:^id(Frame* frame, NSArray<id>* args) { \
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return [objc_name callback:frame withArgs:args]; \
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}]; \
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}
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#endif /* FrameProcessorPlugin_h */
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