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a81e9c82fc
This CL introduced 2 new macros that affect the WebRTC OBJC API symbols: - RTC_OBJC_TYPE_PREFIX: Macro used to prepend a prefix to the API types that are exported with RTC_OBJC_EXPORT. Clients can patch the definition of this macro locally and build WebRTC.framework with their own prefix in case symbol clashing is a problem. This macro must only be defined by changing the value in sdk/objc/base/RTCMacros.h and not on via compiler flag to ensure it has a unique value. - RCT_OBJC_TYPE: Macro used internally to reference API types. Declaring an API type without using this macro will not include the declared type in the set of types that will be affected by the configurable RTC_OBJC_TYPE_PREFIX. Manual changes: https://webrtc-review.googlesource.com/c/src/+/173781/5..10 The auto-generated changes in PS#5 have been done with: https://webrtc-review.googlesource.com/c/src/+/174061. Bug: None Change-Id: I0d54ca94db764fb3b6cb4365873f79e14cd879b8 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/173781 Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org> Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> Reviewed-by: Kári Helgason <kthelgason@webrtc.org> Cr-Commit-Position: refs/heads/master@{#31153}
122 lines
3.4 KiB
Objective-C
122 lines
3.4 KiB
Objective-C
/*
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* Copyright 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#import "RTCMTLNSVideoView.h"
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#import <Metal/Metal.h>
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#import <MetalKit/MetalKit.h>
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#import "base/RTCVideoFrame.h"
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#import "RTCMTLI420Renderer.h"
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@interface RTC_OBJC_TYPE (RTCMTLNSVideoView)
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()<MTKViewDelegate> @property(nonatomic) id<RTCMTLRenderer> renderer;
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@property(nonatomic, strong) MTKView *metalView;
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@property(atomic, strong) RTC_OBJC_TYPE(RTCVideoFrame) * videoFrame;
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@end
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@implementation RTC_OBJC_TYPE (RTCMTLNSVideoView) {
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id<RTCMTLRenderer> _renderer;
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}
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@synthesize delegate = _delegate;
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@synthesize renderer = _renderer;
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@synthesize metalView = _metalView;
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@synthesize videoFrame = _videoFrame;
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- (instancetype)initWithFrame:(CGRect)frameRect {
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self = [super initWithFrame:frameRect];
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if (self) {
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[self configure];
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}
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return self;
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}
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- (instancetype)initWithCoder:(NSCoder *)aCoder {
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self = [super initWithCoder:aCoder];
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if (self) {
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[self configure];
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}
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return self;
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}
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#pragma mark - Private
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+ (BOOL)isMetalAvailable {
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return [MTLCopyAllDevices() count] > 0;
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}
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- (void)configure {
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if ([[self class] isMetalAvailable]) {
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_metalView = [[MTKView alloc] initWithFrame:self.bounds];
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[self addSubview:_metalView];
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_metalView.layerContentsPlacement = NSViewLayerContentsPlacementScaleProportionallyToFit;
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_metalView.translatesAutoresizingMaskIntoConstraints = NO;
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_metalView.framebufferOnly = YES;
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_metalView.delegate = self;
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_renderer = [[RTCMTLI420Renderer alloc] init];
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if (![(RTCMTLI420Renderer *)_renderer addRenderingDestination:_metalView]) {
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_renderer = nil;
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};
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}
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}
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- (void)updateConstraints {
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NSDictionary *views = NSDictionaryOfVariableBindings(_metalView);
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NSArray *constraintsHorizontal =
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[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[_metalView]-0-|"
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options:0
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metrics:nil
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views:views];
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[self addConstraints:constraintsHorizontal];
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NSArray *constraintsVertical =
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[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[_metalView]-0-|"
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options:0
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metrics:nil
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views:views];
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[self addConstraints:constraintsVertical];
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[super updateConstraints];
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}
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#pragma mark - MTKViewDelegate methods
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- (void)drawInMTKView:(nonnull MTKView *)view {
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if (self.videoFrame == nil) {
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return;
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}
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if (view == self.metalView) {
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[_renderer drawFrame:self.videoFrame];
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}
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}
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- (void)mtkView:(MTKView *)view drawableSizeWillChange:(CGSize)size {
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}
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#pragma mark - RTC_OBJC_TYPE(RTCVideoRenderer)
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- (void)setSize:(CGSize)size {
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_metalView.drawableSize = size;
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dispatch_async(dispatch_get_main_queue(), ^{
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[self.delegate videoView:self didChangeVideoSize:size];
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});
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[_metalView draw];
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}
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- (void)renderFrame:(nullable RTC_OBJC_TYPE(RTCVideoFrame) *)frame {
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if (frame == nil) {
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return;
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}
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self.videoFrame = [frame newI420VideoFrame];
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}
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@end
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