You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
123 lines
3.4 KiB
123 lines
3.4 KiB
/*
|
|
* Copyright 2017 The WebRTC project authors. All Rights Reserved.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license
|
|
* that can be found in the LICENSE file in the root of the source
|
|
* tree. An additional intellectual property rights grant can be found
|
|
* in the file PATENTS. All contributing project authors may
|
|
* be found in the AUTHORS file in the root of the source tree.
|
|
*/
|
|
|
|
#import "RTCMTLNSVideoView.h"
|
|
|
|
#import <Metal/Metal.h>
|
|
#import <MetalKit/MetalKit.h>
|
|
|
|
#import "base/RTCVideoFrame.h"
|
|
|
|
#import "RTCMTLI420Renderer.h"
|
|
|
|
@interface RTC_OBJC_TYPE (RTCMTLNSVideoView)
|
|
()<MTKViewDelegate> @property(nonatomic) id<RTCMTLRenderer> renderer;
|
|
@property(nonatomic, strong) MTKView *metalView;
|
|
@property(atomic, strong) RTC_OBJC_TYPE(RTCVideoFrame) * videoFrame;
|
|
@end
|
|
|
|
@implementation RTC_OBJC_TYPE (RTCMTLNSVideoView) {
|
|
id<RTCMTLRenderer> _renderer;
|
|
}
|
|
|
|
@synthesize delegate = _delegate;
|
|
@synthesize renderer = _renderer;
|
|
@synthesize metalView = _metalView;
|
|
@synthesize videoFrame = _videoFrame;
|
|
|
|
- (instancetype)initWithFrame:(CGRect)frameRect {
|
|
self = [super initWithFrame:frameRect];
|
|
if (self) {
|
|
[self configure];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
- (instancetype)initWithCoder:(NSCoder *)aCoder {
|
|
self = [super initWithCoder:aCoder];
|
|
if (self) {
|
|
[self configure];
|
|
}
|
|
return self;
|
|
}
|
|
|
|
#pragma mark - Private
|
|
|
|
+ (BOOL)isMetalAvailable {
|
|
return [MTLCopyAllDevices() count] > 0;
|
|
}
|
|
|
|
- (void)configure {
|
|
if ([[self class] isMetalAvailable]) {
|
|
_metalView = [[MTKView alloc] initWithFrame:self.bounds];
|
|
[self addSubview:_metalView];
|
|
_metalView.layerContentsPlacement = NSViewLayerContentsPlacementScaleProportionallyToFit;
|
|
_metalView.translatesAutoresizingMaskIntoConstraints = NO;
|
|
_metalView.framebufferOnly = YES;
|
|
_metalView.delegate = self;
|
|
|
|
_renderer = [[RTCMTLI420Renderer alloc] init];
|
|
if (![(RTCMTLI420Renderer *)_renderer addRenderingDestination:_metalView]) {
|
|
_renderer = nil;
|
|
};
|
|
}
|
|
}
|
|
|
|
- (void)updateConstraints {
|
|
NSDictionary *views = NSDictionaryOfVariableBindings(_metalView);
|
|
|
|
NSArray *constraintsHorizontal =
|
|
[NSLayoutConstraint constraintsWithVisualFormat:@"H:|-0-[_metalView]-0-|"
|
|
options:0
|
|
metrics:nil
|
|
views:views];
|
|
[self addConstraints:constraintsHorizontal];
|
|
|
|
NSArray *constraintsVertical =
|
|
[NSLayoutConstraint constraintsWithVisualFormat:@"V:|-0-[_metalView]-0-|"
|
|
options:0
|
|
metrics:nil
|
|
views:views];
|
|
[self addConstraints:constraintsVertical];
|
|
[super updateConstraints];
|
|
}
|
|
|
|
#pragma mark - MTKViewDelegate methods
|
|
- (void)drawInMTKView:(nonnull MTKView *)view {
|
|
if (self.videoFrame == nil) {
|
|
return;
|
|
}
|
|
if (view == self.metalView) {
|
|
[_renderer drawFrame:self.videoFrame];
|
|
}
|
|
}
|
|
|
|
- (void)mtkView:(MTKView *)view drawableSizeWillChange:(CGSize)size {
|
|
}
|
|
|
|
#pragma mark - RTC_OBJC_TYPE(RTCVideoRenderer)
|
|
|
|
- (void)setSize:(CGSize)size {
|
|
_metalView.drawableSize = size;
|
|
dispatch_async(dispatch_get_main_queue(), ^{
|
|
[self.delegate videoView:self didChangeVideoSize:size];
|
|
});
|
|
[_metalView draw];
|
|
}
|
|
|
|
- (void)renderFrame:(nullable RTC_OBJC_TYPE(RTCVideoFrame) *)frame {
|
|
if (frame == nil) {
|
|
return;
|
|
}
|
|
self.videoFrame = [frame newI420VideoFrame];
|
|
}
|
|
|
|
@end
|