070d5e30a8
Reason for revert: Re-land Original issue's description: > Revert of Add metal view, shaders and renderer. (patchset #18 id:340001 of https://codereview.webrtc.org/2651743007/ ) > > Reason for revert: > Reverting due to breakage in the Google3 import > > Original issue's description: > > Add metal view, shaders and renderer. > > > > This CL submits standalone Metal view, renderer and shader. > > > > BUG=webrtc:7079 > > > > Review-Url: https://codereview.webrtc.org/2651743007 > > Cr-Commit-Position: refs/heads/master@{#16787} > > Committed:fc8c97f950> > TBR=magjed@webrtc.org,kthelgason@webrtc.org,tkchin@webrtc.org,haysc@webrtc.org > # Skipping CQ checks because original CL landed less than 1 days ago. > NOPRESUBMIT=true > NOTREECHECKS=true > NOTRY=true > BUG=webrtc:7079 > > Review-Url: https://codereview.webrtc.org/2711003004 > Cr-Commit-Position: refs/heads/master@{#16788} > Committed:b681aabdfcTBR=magjed@webrtc.org,kthelgason@webrtc.org,tkchin@webrtc.org,haysc@webrtc.org # Not skipping CQ checks because original CL landed more than 1 days ago. BUG=webrtc:7079 Review-Url: https://codereview.webrtc.org/2716703004 Cr-Commit-Position: refs/heads/master@{#16846}
108 lines
2.9 KiB
Objective-C
108 lines
2.9 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 "WebRTC/RTCMTLVideoView.h"
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#import <Metal/Metal.h>
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#import <MetalKit/MetalKit.h>
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#import "WebRTC/RTCLogging.h"
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#import "WebRTC/RTCVideoFrame.h"
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#import "RTCMTLNV12Renderer.h"
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@interface RTCMTLVideoView () <MTKViewDelegate>
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@property(nonatomic, strong) id<RTCMTLRenderer> renderer;
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@property(nonatomic, strong) MTKView *metalView;
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@property(atomic, strong) RTCVideoFrame *videoFrame;
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@end
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@implementation RTCMTLVideoView {
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id<RTCMTLRenderer> _renderer;
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}
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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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#if defined(__OBJC__) && COREVIDEO_SUPPORTS_METAL
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return YES;
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#elif
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return NO;
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#endif
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}
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- (void)configure {
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if ([RTCMTLVideoView isMetalAvailable]) {
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_metalView = [[MTKView alloc] initWithFrame:self.bounds];
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[self addSubview:_metalView];
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_metalView.delegate = self;
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_metalView.contentMode = UIViewContentModeScaleAspectFit;
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_metalView.translatesAutoresizingMaskIntoConstraints = NO;
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UILayoutGuide *margins = self.layoutMarginsGuide;
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[_metalView.topAnchor constraintEqualToAnchor:margins.topAnchor].active = YES;
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[_metalView.bottomAnchor constraintEqualToAnchor:margins.bottomAnchor].active = YES;
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[_metalView.leftAnchor constraintEqualToAnchor:margins.leftAnchor].active = YES;
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[_metalView.rightAnchor constraintEqualToAnchor:margins.rightAnchor].active = YES;
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_renderer = [[RTCMTLNV12Renderer alloc] init];
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if (![(RTCMTLNV12Renderer *)_renderer addRenderingDestination:_metalView]) {
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_renderer = nil;
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};
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} else {
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RTCLogError("Metal configuration falied.");
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}
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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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NSAssert(view == self.metalView, @"Receiving draw callbacks from foreign instance.");
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[_renderer drawFrame:self.videoFrame];
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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 - RTCVideoRenderer
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- (void)setSize:(CGSize)size {
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_metalView.drawableSize = size;
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[_metalView draw];
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}
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- (void)renderFrame:(nullable RTCVideoFrame *)frame {
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if (frame == nil) {
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RTCLogInfo(@"Incoming frame is nil. Exiting render callback.");
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return;
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}
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self.videoFrame = frame;
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}
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@end
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