45 lines
1.2 KiB
Objective-C
45 lines
1.2 KiB
Objective-C
// Copyright 2019 The MediaPipe Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#import "mediapipe/objc/MPPDisplayLinkWeakTarget.h"
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@implementation MPPDisplayLinkWeakTarget {
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__weak id _target;
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SEL _selector;
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}
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#pragma mark - Init
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- (instancetype)initWithTarget:(id)target selector:(SEL)sel {
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self = [super init];
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if (self) {
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_target = target;
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_selector = sel;
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}
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return self;
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}
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#pragma mark - Public
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- (void)displayLinkCallback:(CADisplayLink *)sender {
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__strong id target = _target;
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if (target == nil) {
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return;
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}
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void (*display)(id, SEL, CADisplayLink *) = (void *)[target methodForSelector:_selector];
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display(target, _selector, sender);
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}
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@end
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