src/views/RenderingView.mm

/*
*  Copyright (C) 2020 Savoir-faire Linux Inc.
*  Author: Kateryna Kostiuk <kateryna.kostiuk@savoirfairelinux.com>
*
*  This program is free software; you can redistribute it and/or modify
*  it under the terms of the GNU General Public License as published by
*  the Free Software Foundation; either version 3 of the License, or
*  (at your option) any later version.
*
*  This program is distributed in the hope that it will be useful,
*  but WITHOUT ANY WARRANTY; without even the implied warranty of
*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
*  GNU General Public License for more details.
*
*  You should have received a copy of the GNU General Public License
*  along with this program; if not, write to the Free Software
*  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301 USA.
*/
#import "RenderingView.h"
#import "src/utils.h"
#import "CallMTKView.h"
#import "CallLayer.h"

@interface RenderingView()

@property id <VideoRendering> renderer;

@end

@implementation RenderingView
@synthesize videoRunning, renderer;

- (instancetype)initWithFrame:(NSRect)frame {
    self = [super initWithFrame:frame];
    [self commonInit];
    return self;
}

- (instancetype)initWithCoder:(NSCoder *)coder {
    self = [super initWithCoder:coder];
    [self commonInit];
    return self;
}

-(void)commonInit {
    if ([self metalSupported]) {
        renderer = [[CallMTKView alloc] initWithFrame:self.frame];
        NSView* renderView = (NSView*)renderer;
        [self addSubview: renderView];
        renderView.translatesAutoresizingMaskIntoConstraints = true;
        [renderView setAutoresizingMask:NSViewWidthSizable | NSViewHeightSizable];
        [renderView.topAnchor constraintEqualToAnchor:self.topAnchor constant:0].active = YES;
        [renderView.bottomAnchor constraintEqualToAnchor:self.bottomAnchor constant:0].active = YES;
        [renderView.leadingAnchor constraintEqualToAnchor:self.leadingAnchor constant:0].active = YES;
        [renderView.trailingAnchor constraintEqualToAnchor:self.trailingAnchor constant:0].active = YES;
    } else {
        [self setLayer:[[CallLayer alloc] init]];
        [self setWantsLayer:true];
        CallLayer* callLayer = (CallLayer*)self.layer;
        renderer = callLayer;
    }
}

-(void)renderWithPixelBuffer:(CVPixelBufferRef)buffer size:(CGSize)size rotation: (float)rotation fillFrame: (bool)fill {
    [renderer renderWithPixelBuffer:buffer size:size rotation:rotation fillFrame:fill];
}

-(void)fillWithBlack {
    [renderer fillWithBlack];
    [self.layer setBackgroundColor:NSColor.blackColor.CGColor];
}

-(void)setupView {
    [renderer setupView];
}

-(void)setVideoRunning:(BOOL)running {
    // for opengl video running set when new frame received
    if ([self metalSupported] || !running) {
        renderer.videoRunning = running;
    }
    videoRunning = running;
}

-(BOOL)metalSupported {
    return MTLCreateSystemDefaultDevice() != nil;
}

@end