60 lines
1.5 KiB
Plaintext
60 lines
1.5 KiB
Plaintext
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//
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// PreviewSkiaView.mm
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// VisionCamera
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//
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// Created by Marc Rousavy on 17.11.22.
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// Copyright © 2022 mrousavy. All rights reserved.
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//
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#import "PreviewSkiaView.h"
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#import <Foundation/Foundation.h>
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#import "SkiaMetalCanvasProvider.h"
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#include <exception>
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#include <string>
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#if SHOW_FPS
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#import <React/RCTFPSGraph.h>
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#endif
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@implementation PreviewSkiaView {
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std::shared_ptr<SkiaMetalCanvasProvider> _canvasProvider;
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}
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- (void)drawFrame:(CMSampleBufferRef)buffer withCallback:(DrawCallback _Nonnull)callback {
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if (_canvasProvider == nullptr) {
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throw std::runtime_error("Cannot draw new Frame to Canvas when SkiaMetalCanvasProvider is null!");
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}
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_canvasProvider->renderFrameToCanvas(buffer, ^(SkCanvas* canvas) {
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callback((void*)canvas);
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});
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}
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- (void) willMoveToSuperview:(UIView *)newWindow {
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if (newWindow == NULL) {
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// Remove implementation view when the parent view is not set
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if (_canvasProvider != nullptr) {
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[_canvasProvider->getLayer() removeFromSuperlayer];
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_canvasProvider = nullptr;
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}
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} else {
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// Create implementation view when the parent view is set
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if (_canvasProvider == nullptr) {
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_canvasProvider = std::make_shared<SkiaMetalCanvasProvider>();
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[self.layer addSublayer: _canvasProvider->getLayer()];
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_canvasProvider->start();
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}
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}
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}
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- (void) layoutSubviews {
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if (_canvasProvider != nullptr) {
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_canvasProvider->setSize(self.bounds.size.width, self.bounds.size.height);
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}
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}
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@end
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