react-native-vision-camera/package/ios/Frame Processor/SharedArray.mm
Marc Rousavy 29fe98cc44
feat: Add zero-copy SharedArray type to Frame Processor Plugins (#2383)
* feat: Create `TypedArray` class for Frame Processor Plugins

* Type

* feat: Pass `VisionCameraProxy` along (BREAKING)

* feat: Finish implementation

* Log a bit

* feat: Successfully convert JSI <> JNI buffers

* Wrap buffer

* fix: Fix using wrong Runtime

* feat: Add docs

* add zero copy example

* Format C++

* Create iOS base

* feat: Finish iOS implementation

* chore: Format

* fix: Use `NSData` instead of `NSMutableData`

* Format

* fix: Fix build when Frame Processors are disabled

* chore: Rename `TypedArray` to `SharedArray`

* fix: Fix Swift typings for Array

* Remove a few default inits

* fix: Fix Android build

* fix: Use `NSInteger`

* Update SharedArray.mm

* fix: Expose bytes directly on iOS (NSData was immutable)
2024-01-12 16:00:36 +01:00

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//
// SharedArray.mm
// VisionCamera
//
// Created by Marc Rousavy on 12.01.24.
// Copyright © 2024 mrousavy. All rights reserved.
//
#import "SharedArray.h"
#import "JSITypedArray.h"
#import <Foundation/Foundation.h>
#import <jsi/jsi.h>
using namespace facebook;
@implementation SharedArray {
uint8_t* _data;
NSInteger _count;
std::shared_ptr<vision::TypedArrayBase> _array;
}
vision::TypedArrayKind getTypedArrayKind(int unsafeEnumValue) {
return static_cast<vision::TypedArrayKind>(unsafeEnumValue);
}
- (instancetype)initWithProxy:(VisionCameraProxyHolder*)proxy type:(SharedArrayType)type size:(NSInteger)size {
if (self = [super init]) {
jsi::Runtime& runtime = proxy.proxy->getWorkletRuntime();
vision::TypedArrayKind kind = getTypedArrayKind((int)type);
_array = std::make_shared<vision::TypedArrayBase>(vision::TypedArrayBase(runtime, size, kind));
_data = _array->getBuffer(runtime).data(runtime);
_count = size;
}
return self;
}
- (instancetype)initWithRuntime:(jsi::Runtime&)runtime typedArray:(std::shared_ptr<vision::TypedArrayBase>)typedArray {
if (self = [super init]) {
_array = typedArray;
_data = _array->getBuffer(runtime).data(runtime);
_count = _array->getBuffer(runtime).size(runtime);
}
return self;
}
- (std::shared_ptr<vision::TypedArrayBase>)typedArray {
return _array;
}
- (uint8_t*)data {
return _data;
}
- (NSInteger)count {
return _count;
}
@end