mirror of
https://github.com/mollyim/webrtc.git
synced 2025-05-14 14:20:45 +01:00
06d094f3e6
The MTL renderer should also have a way to notify it's delegate that it's content size changed. The plan is to introduce this new protocol, move existing clients over to implementing it in favour of RTCEAGLVideoViewDelegate, and then finally removing the old protocol. Bug: b/73147161 Change-Id: I908d7b2667e44e02a58066d701a48efec0e98d14 Reviewed-on: https://webrtc-review.googlesource.com/70243 Commit-Queue: Kári Helgason <kthelgason@webrtc.org> Reviewed-by: Anders Carlsson <andersc@webrtc.org> Cr-Commit-Position: refs/heads/master@{#22944}
122 lines
3.3 KiB
Objective-C
122 lines
3.3 KiB
Objective-C
/*
|
|
* 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 "WebRTC/RTCMTLNSVideoView.h"
|
|
|
|
#import <Metal/Metal.h>
|
|
#import <MetalKit/MetalKit.h>
|
|
|
|
#import "WebRTC/RTCVideoFrame.h"
|
|
|
|
#import "RTCMTLI420Renderer.h"
|
|
|
|
@interface RTCMTLNSVideoView ()<MTKViewDelegate>
|
|
@property(nonatomic) id<RTCMTLRenderer> renderer;
|
|
@property(nonatomic, strong) MTKView *metalView;
|
|
@property(atomic, strong) RTCVideoFrame *videoFrame;
|
|
@end
|
|
|
|
@implementation 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 - 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 RTCVideoFrame *)frame {
|
|
if (frame == nil) {
|
|
return;
|
|
}
|
|
self.videoFrame = [frame newI420VideoFrame];
|
|
}
|
|
|
|
@end
|