react-native-vision-camera/ios/Frame Processor/FrameProcessorPlugin.h
Marc Rousavy 68a716b506
feat: native Frame type to provide Orientation (#186)
* Use Frame.h

* Add orientation

* Determine buffer orientation

* Replace plugins

* fix calls

* Update FRAME_PROCESSOR_CREATE_PLUGIN_IOS.mdx

* Update FRAME_PROCESSOR_CREATE_PLUGIN_IOS.mdx

* format

* Update CameraPage.tsx

* Update FRAME_PROCESSOR_CREATE_PLUGIN_IOS.mdx

* Add links to docs

* Use `.` syntax

* Make properties `readonly`

* Fix `@synthesize` backing store
2021-06-09 10:57:05 +02:00

64 lines
3.1 KiB
Objective-C

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