react-native-vision-camera/ios/Frame Processor/JSINSObjectConversion.mm
2023-07-31 11:34:21 +02:00

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//
// JSINSObjectConversion.mm
// VisionCamera
//
// Forked and Adjusted by Marc Rousavy on 02.05.21.
// Copyright © 2021 mrousavy & Facebook. All rights reserved.
//
// Forked and adjusted from: https://github.com/facebook/react-native/blob/900210cacc4abca0079e3903781bc223c80c8ac7/ReactCommon/react/nativemodule/core/platform/ios/RCTTurboModule.mm
// Original Copyright Notice:
//
// Copyright (c) Facebook, Inc. and its affiliates.
//
// This source code is licensed under the MIT license found in the
// LICENSE file in the root directory of this source tree.
//
#import "JSINSObjectConversion.h"
#import <Foundation/Foundation.h>
#import <jsi/jsi.h>
#import <ReactCommon/CallInvoker.h>
#import <React/RCTBridge.h>
#import <ReactCommon/TurboModuleUtils.h>
#import <ReactCommon/RCTBlockGuard.h>
#import "../Frame Processor/Frame.h"
#import "../Frame Processor/FrameHostObject.h"
using namespace facebook;
using namespace facebook::react;
namespace JSINSObjectConversion {
jsi::Value convertNSNumberToJSIBoolean(jsi::Runtime &runtime, NSNumber *value)
{
return jsi::Value((bool)[value boolValue]);
}
jsi::Value convertNSNumberToJSINumber(jsi::Runtime &runtime, NSNumber *value)
{
return jsi::Value([value doubleValue]);
}
jsi::String convertNSStringToJSIString(jsi::Runtime &runtime, NSString *value)
{
return jsi::String::createFromUtf8(runtime, [value UTF8String] ?: "");
}
jsi::Object convertNSDictionaryToJSIObject(jsi::Runtime &runtime, NSDictionary *value)
{
jsi::Object result = jsi::Object(runtime);
for (NSString *k in value) {
result.setProperty(runtime, [k UTF8String], convertObjCObjectToJSIValue(runtime, value[k]));
}
return result;
}
jsi::Array convertNSArrayToJSIArray(jsi::Runtime &runtime, NSArray *value)
{
jsi::Array result = jsi::Array(runtime, value.count);
for (size_t i = 0; i < value.count; i++) {
result.setValueAtIndex(runtime, i, convertObjCObjectToJSIValue(runtime, value[i]));
}
return result;
}
jsi::Value convertObjCObjectToJSIValue(jsi::Runtime &runtime, id value)
{
if (value == nil) {
return jsi::Value::undefined();
} else if ([value isKindOfClass:[NSString class]]) {
return convertNSStringToJSIString(runtime, (NSString *)value);
} else if ([value isKindOfClass:[NSNumber class]]) {
if ([value isKindOfClass:[@YES class]]) {
return convertNSNumberToJSIBoolean(runtime, (NSNumber *)value);
}
return convertNSNumberToJSINumber(runtime, (NSNumber *)value);
} else if ([value isKindOfClass:[NSDictionary class]]) {
return convertNSDictionaryToJSIObject(runtime, (NSDictionary *)value);
} else if ([value isKindOfClass:[NSArray class]]) {
return convertNSArrayToJSIArray(runtime, (NSArray *)value);
} else if (value == (id)kCFNull) {
return jsi::Value::null();
} else if ([value isKindOfClass:[Frame class]]) {
auto frameHostObject = std::make_shared<FrameHostObject>((Frame*)value);
return jsi::Object::createFromHostObject(runtime, frameHostObject);
}
return jsi::Value::undefined();
}
NSString *convertJSIStringToNSString(jsi::Runtime &runtime, const jsi::String &value)
{
return [NSString stringWithUTF8String:value.utf8(runtime).c_str()];
}
NSArray* convertJSICStyleArrayToNSArray(jsi::Runtime &runtime, const jsi::Value* array, size_t length, std::shared_ptr<CallInvoker> jsInvoker) {
if (length < 1) return @[];
NSMutableArray *result = [NSMutableArray new];
for (size_t i = 0; i < length; i++) {
// Insert kCFNull when it's `undefined` value to preserve the indices.
[result
addObject:convertJSIValueToObjCObject(runtime, array[i], jsInvoker) ?: (id)kCFNull];
}
return [result copy];
}
jsi::Value* convertNSArrayToJSICStyleArray(jsi::Runtime &runtime, NSArray* array) {
auto result = new jsi::Value[array.count];
for (size_t i = 0; i < array.count; i++) {
result[i] = convertObjCObjectToJSIValue(runtime, array[i]);
}
return result;
}
NSArray* convertJSIArrayToNSArray(jsi::Runtime &runtime, const jsi::Array &value, std::shared_ptr<CallInvoker> jsInvoker)
{
size_t size = value.size(runtime);
NSMutableArray *result = [NSMutableArray new];
for (size_t i = 0; i < size; i++) {
// Insert kCFNull when it's `undefined` value to preserve the indices.
[result
addObject:convertJSIValueToObjCObject(runtime, value.getValueAtIndex(runtime, i), jsInvoker) ?: (id)kCFNull];
}
return [result copy];
}
NSDictionary* convertJSIObjectToNSDictionary(jsi::Runtime &runtime, const jsi::Object &value, std::shared_ptr<CallInvoker> jsInvoker)
{
jsi::Array propertyNames = value.getPropertyNames(runtime);
size_t size = propertyNames.size(runtime);
NSMutableDictionary *result = [NSMutableDictionary new];
for (size_t i = 0; i < size; i++) {
jsi::String name = propertyNames.getValueAtIndex(runtime, i).getString(runtime);
NSString *k = convertJSIStringToNSString(runtime, name);
id v = convertJSIValueToObjCObject(runtime, value.getProperty(runtime, name), jsInvoker);
if (v) {
result[k] = v;
}
}
return [result copy];
}
id convertJSIValueToObjCObject(jsi::Runtime &runtime, const jsi::Value &value, std::shared_ptr<CallInvoker> jsInvoker)
{
if (value.isUndefined() || value.isNull()) {
return nil;
}
if (value.isBool()) {
return @(value.getBool());
}
if (value.isNumber()) {
return @(value.getNumber());
}
if (value.isString()) {
return convertJSIStringToNSString(runtime, value.getString(runtime));
}
if (value.isObject()) {
jsi::Object o = value.getObject(runtime);
if (o.isArray(runtime)) {
return convertJSIArrayToNSArray(runtime, o.getArray(runtime), jsInvoker);
}
if (o.isFunction(runtime)) {
return convertJSIFunctionToCallback(runtime, std::move(o.getFunction(runtime)), jsInvoker);
}
if (o.isHostObject(runtime)) {
auto hostObject = o.asHostObject(runtime);
auto frame = dynamic_cast<FrameHostObject*>(hostObject.get());
if (frame != nullptr) {
return frame->frame;
}
}
return convertJSIObjectToNSDictionary(runtime, o, jsInvoker);
}
throw std::runtime_error("Unsupported jsi::jsi::Value kind");
}
RCTResponseSenderBlock convertJSIFunctionToCallback(jsi::Runtime &runtime, const jsi::Function &value, std::shared_ptr<CallInvoker> jsInvoker)
{
auto weakWrapper = CallbackWrapper::createWeak(value.getFunction(runtime), runtime, jsInvoker);
RCTBlockGuard *blockGuard = [[RCTBlockGuard alloc] initWithCleanup:^() {
auto strongWrapper = weakWrapper.lock();
if (strongWrapper) {
strongWrapper->destroy();
}
}];
BOOL __block wrapperWasCalled = NO;
RCTResponseSenderBlock callback = ^(NSArray *responses) {
if (wrapperWasCalled) {
throw std::runtime_error("callback arg cannot be called more than once");
}
auto strongWrapper = weakWrapper.lock();
if (!strongWrapper) {
return;
}
strongWrapper->jsInvoker().invokeAsync([weakWrapper, responses, blockGuard]() {
auto strongWrapper2 = weakWrapper.lock();
if (!strongWrapper2) {
return;
}
const jsi::Value* args = convertNSArrayToJSICStyleArray(strongWrapper2->runtime(), responses);
strongWrapper2->callback().call(strongWrapper2->runtime(), args, static_cast<size_t>(responses.count));
strongWrapper2->destroy();
delete[] args;
// Delete the CallbackWrapper when the block gets dealloced without being invoked.
(void)blockGuard;
});
wrapperWasCalled = YES;
};
return [callback copy];
}
} // namespace JSIJNIObjectConversion