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/*
* Copyright 2014 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 "APPRTCViewController.h"
#import <AVFoundation/AVFoundation.h>
#import "sdk/objc/api/peerconnection/RTCVideoTrack.h"
#import "sdk/objc/components/renderer/metal/RTCMTLNSVideoView.h"
#import "ARDAppClient.h"
#import "ARDCaptureController.h"
#import "ARDSettingsModel.h"
static NSUInteger const kContentWidth = 900;
static NSUInteger const kRoomFieldWidth = 200;
static NSUInteger const kActionItemHeight = 30;
static NSUInteger const kBottomViewHeight = 200;
@class APPRTCMainView;
@protocol APPRTCMainViewDelegate
- (void)appRTCMainView:(APPRTCMainView*)mainView
didEnterRoomId:(NSString*)roomId
loopback:(BOOL)isLoopback;
@end
@interface APPRTCMainView : NSView
@property(nonatomic, weak) id<APPRTCMainViewDelegate> delegate;
@property(nonatomic, readonly) NSView<RTC_OBJC_TYPE(RTCVideoRenderer)>* localVideoView;
@property(nonatomic, readonly) NSView<RTC_OBJC_TYPE(RTCVideoRenderer)>* remoteVideoView;
@property(nonatomic, readonly) NSTextView* logView;
- (void)displayLogMessage:(NSString*)message;
@end
@interface APPRTCMainView () <NSTextFieldDelegate, RTC_OBJC_TYPE (RTCVideoViewDelegate)>
@end
@implementation APPRTCMainView {
NSScrollView* _scrollView;
NSView* _actionItemsView;
NSButton* _connectButton;
NSButton* _loopbackButton;
NSTextField* _roomField;
CGSize _localVideoSize;
CGSize _remoteVideoSize;
}
@synthesize delegate = _delegate;
@synthesize localVideoView = _localVideoView;
@synthesize remoteVideoView = _remoteVideoView;
@synthesize logView = _logView;
- (void)displayLogMessage:(NSString *)message {
dispatch_async(dispatch_get_main_queue(), ^{
self.logView.string = [NSString stringWithFormat:@"%@%@\n", self.logView.string, message];
NSRange range = NSMakeRange(self.logView.string.length, 0);
[self.logView scrollRangeToVisible:range];
});
}
#pragma mark - Private
- (instancetype)initWithFrame:(NSRect)frame {
self = [super initWithFrame:frame];
if (self) {
[self setupViews];
}
return self;
}
+ (BOOL)requiresConstraintBasedLayout {
return YES;
}
- (void)updateConstraints {
NSParameterAssert(
_roomField != nil &&
_scrollView != nil &&
_remoteVideoView != nil &&
_localVideoView != nil &&
_actionItemsView!= nil &&
_connectButton != nil &&
_loopbackButton != nil);
[self removeConstraints:[self constraints]];
NSDictionary* viewsDictionary =
NSDictionaryOfVariableBindings(_roomField,
_scrollView,
_remoteVideoView,
_localVideoView,
_actionItemsView,
_connectButton,
_loopbackButton);
NSSize remoteViewSize = [self remoteVideoViewSize];
NSDictionary* metrics = @{
@"remoteViewWidth" : @(remoteViewSize.width),
@"remoteViewHeight" : @(remoteViewSize.height),
@"kBottomViewHeight" : @(kBottomViewHeight),
@"localViewHeight" : @(remoteViewSize.height / 3),
@"localViewWidth" : @(remoteViewSize.width / 3),
@"kRoomFieldWidth" : @(kRoomFieldWidth),
@"kActionItemHeight" : @(kActionItemHeight)
};
// Declare this separately to avoid compiler warning about splitting string
// within an NSArray expression.
NSString* verticalConstraintLeft =
@"V:|-[_remoteVideoView(remoteViewHeight)]-[_scrollView(kBottomViewHeight)]-|";
NSString* verticalConstraintRight =
@"V:|-[_remoteVideoView(remoteViewHeight)]-[_actionItemsView(kBottomViewHeight)]-|";
NSArray* constraintFormats = @[
verticalConstraintLeft,
verticalConstraintRight,
@"H:|-[_remoteVideoView(remoteViewWidth)]-|",
@"V:|-[_localVideoView(localViewHeight)]",
@"H:|-[_localVideoView(localViewWidth)]",
@"H:|-[_scrollView(==_actionItemsView)]-[_actionItemsView]-|"
];
NSArray* actionItemsConstraints = @[
@"H:|-[_roomField(kRoomFieldWidth)]-[_loopbackButton(kRoomFieldWidth)]",
@"H:|-[_connectButton(kRoomFieldWidth)]",
@"V:|-[_roomField(kActionItemHeight)]-[_connectButton(kActionItemHeight)]",
@"V:|-[_loopbackButton(kActionItemHeight)]",
];
[APPRTCMainView addConstraints:constraintFormats
toView:self
viewsDictionary:viewsDictionary
metrics:metrics];
[APPRTCMainView addConstraints:actionItemsConstraints
toView:_actionItemsView
viewsDictionary:viewsDictionary
metrics:metrics];
[super updateConstraints];
}
#pragma mark - Constraints helper
+ (void)addConstraints:(NSArray*)constraints toView:(NSView*)view
viewsDictionary:(NSDictionary*)viewsDictionary
metrics:(NSDictionary*)metrics {
for (NSString* constraintFormat in constraints) {
NSArray* constraints =
[NSLayoutConstraint constraintsWithVisualFormat:constraintFormat
options:0
metrics:metrics
views:viewsDictionary];
for (NSLayoutConstraint* constraint in constraints) {
[view addConstraint:constraint];
}
}
}
#pragma mark - Control actions
- (void)startCall:(id)sender {
NSString* roomString = _roomField.stringValue;
// Generate room id for loopback options.
if (_loopbackButton.intValue && [roomString isEqualToString:@""]) {
roomString = [NSUUID UUID].UUIDString;
roomString = [roomString stringByReplacingOccurrencesOfString:@"-" withString:@""];
}
[self.delegate appRTCMainView:self
didEnterRoomId:roomString
loopback:_loopbackButton.intValue];
[self setNeedsUpdateConstraints:YES];
}
#pragma mark - RTCVideoViewDelegate
- (void)videoView:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)videoView didChangeVideoSize:(CGSize)size {
if (videoView == _remoteVideoView) {
_remoteVideoSize = size;
} else if (videoView == _localVideoView) {
_localVideoSize = size;
} else {
return;
}
[self setNeedsUpdateConstraints:YES];
}
#pragma mark - Private
- (void)setupViews {
NSParameterAssert([[self subviews] count] == 0);
_logView = [[NSTextView alloc] initWithFrame:NSZeroRect];
[_logView setMinSize:NSMakeSize(0, kBottomViewHeight)];
[_logView setMaxSize:NSMakeSize(FLT_MAX, FLT_MAX)];
[_logView setVerticallyResizable:YES];
[_logView setAutoresizingMask:NSViewWidthSizable];
NSTextContainer* textContainer = [_logView textContainer];
NSSize containerSize = NSMakeSize(kContentWidth, FLT_MAX);
[textContainer setContainerSize:containerSize];
[textContainer setWidthTracksTextView:YES];
[_logView setEditable:NO];
[self setupActionItemsView];
_scrollView = [[NSScrollView alloc] initWithFrame:NSZeroRect];
[_scrollView setTranslatesAutoresizingMaskIntoConstraints:NO];
[_scrollView setHasVerticalScroller:YES];
[_scrollView setDocumentView:_logView];
[self addSubview:_scrollView];
_remoteVideoView = [[RTC_OBJC_TYPE(RTCMTLNSVideoView) alloc] initWithFrame:NSZeroRect];
_localVideoView = [[RTC_OBJC_TYPE(RTCMTLNSVideoView) alloc] initWithFrame:NSZeroRect];
[_remoteVideoView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self addSubview:_remoteVideoView];
[_localVideoView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self addSubview:_localVideoView];
}
- (void)setupActionItemsView {
_actionItemsView = [[NSView alloc] initWithFrame:NSZeroRect];
[_actionItemsView setTranslatesAutoresizingMaskIntoConstraints:NO];
[self addSubview:_actionItemsView];
_roomField = [[NSTextField alloc] initWithFrame:NSZeroRect];
[_roomField setTranslatesAutoresizingMaskIntoConstraints:NO];
[[_roomField cell] setPlaceholderString: @"Enter AppRTC room id"];
[_actionItemsView addSubview:_roomField];
[_roomField setEditable:YES];
_connectButton = [[NSButton alloc] initWithFrame:NSZeroRect];
[_connectButton setTranslatesAutoresizingMaskIntoConstraints:NO];
_connectButton.title = @"Start call";
_connectButton.bezelStyle = NSBezelStyleSmallSquare;
_connectButton.target = self;
_connectButton.action = @selector(startCall:);
[_actionItemsView addSubview:_connectButton];
_loopbackButton = [[NSButton alloc] initWithFrame:NSZeroRect];
[_loopbackButton setTranslatesAutoresizingMaskIntoConstraints:NO];
_loopbackButton.title = @"Loopback";
[_loopbackButton setButtonType:NSButtonTypeSwitch];
[_actionItemsView addSubview:_loopbackButton];
}
- (NSSize)remoteVideoViewSize {
if (!_remoteVideoView.bounds.size.width) {
return NSMakeSize(kContentWidth, 0);
}
NSInteger width = MAX(_remoteVideoView.bounds.size.width, kContentWidth);
NSInteger height = (width/16) * 9;
return NSMakeSize(width, height);
}
@end
@interface APPRTCViewController ()
<ARDAppClientDelegate, APPRTCMainViewDelegate>
@property(nonatomic, readonly) APPRTCMainView* mainView;
@end
@implementation APPRTCViewController {
ARDAppClient* _client;
RTC_OBJC_TYPE(RTCVideoTrack) * _localVideoTrack;
RTC_OBJC_TYPE(RTCVideoTrack) * _remoteVideoTrack;
ARDCaptureController* _captureController;
}
- (void)dealloc {
[self disconnect];
}
- (void)viewDidAppear {
[super viewDidAppear];
[self displayUsageInstructions];
}
- (void)loadView {
APPRTCMainView* view = [[APPRTCMainView alloc] initWithFrame:NSZeroRect];
[view setTranslatesAutoresizingMaskIntoConstraints:NO];
view.delegate = self;
self.view = view;
}
- (void)windowWillClose:(NSNotification*)notification {
[self disconnect];
}
#pragma mark - Usage
- (void)displayUsageInstructions {
[self.mainView displayLogMessage:
@"To start call:\n"
@"• Enter AppRTC room id (not neccessary for loopback)\n"
@"• Start call"];
}
#pragma mark - ARDAppClientDelegate
- (void)appClient:(ARDAppClient *)client
didChangeState:(ARDAppClientState)state {
switch (state) {
case kARDAppClientStateConnected:
[self.mainView displayLogMessage:@"Client connected."];
break;
case kARDAppClientStateConnecting:
[self.mainView displayLogMessage:@"Client connecting."];
break;
case kARDAppClientStateDisconnected:
[self.mainView displayLogMessage:@"Client disconnected."];
[self resetUI];
_client = nil;
break;
}
}
- (void)appClient:(ARDAppClient *)client
didChangeConnectionState:(RTCIceConnectionState)state {
}
- (void)appClient:(ARDAppClient*)client
didCreateLocalCapturer:(RTC_OBJC_TYPE(RTCCameraVideoCapturer) *)localCapturer {
_captureController =
[[ARDCaptureController alloc] initWithCapturer:localCapturer
settings:[[ARDSettingsModel alloc] init]];
[_captureController startCapture];
}
- (void)appClient:(ARDAppClient*)client
didReceiveLocalVideoTrack:(RTC_OBJC_TYPE(RTCVideoTrack) *)localVideoTrack {
_localVideoTrack = localVideoTrack;
[_localVideoTrack addRenderer:self.mainView.localVideoView];
}
- (void)appClient:(ARDAppClient*)client
didReceiveRemoteVideoTrack:(RTC_OBJC_TYPE(RTCVideoTrack) *)remoteVideoTrack {
_remoteVideoTrack = remoteVideoTrack;
[_remoteVideoTrack addRenderer:self.mainView.remoteVideoView];
}
- (void)appClient:(ARDAppClient *)client
didError:(NSError *)error {
[self showAlertWithMessage:[NSString stringWithFormat:@"%@", error]];
[self disconnect];
}
- (void)appClient:(ARDAppClient *)client
didGetStats:(NSArray *)stats {
}
#pragma mark - APPRTCMainViewDelegate
- (void)appRTCMainView:(APPRTCMainView*)mainView
didEnterRoomId:(NSString*)roomId
loopback:(BOOL)isLoopback {
if ([roomId isEqualToString:@""]) {
[self.mainView displayLogMessage:@"Missing room id"];
return;
}
[self disconnect];
ARDAppClient* client = [[ARDAppClient alloc] initWithDelegate:self];
[client connectToRoomWithId:roomId
settings:[[ARDSettingsModel alloc] init] // Use default settings.
isLoopback:isLoopback];
_client = client;
}
#pragma mark - Private
- (APPRTCMainView*)mainView {
return (APPRTCMainView*)self.view;
}
- (void)showAlertWithMessage:(NSString*)message {
dispatch_async(dispatch_get_main_queue(), ^{
NSAlert* alert = [[NSAlert alloc] init];
[alert setMessageText:message];
[alert runModal];
});
}
- (void)resetUI {
[_remoteVideoTrack removeRenderer:self.mainView.remoteVideoView];
[_localVideoTrack removeRenderer:self.mainView.localVideoView];
_remoteVideoTrack = nil;
_localVideoTrack = nil;
[self.mainView.remoteVideoView renderFrame:nil];
[self.mainView.localVideoView renderFrame:nil];
}
- (void)disconnect {
[self resetUI];
[_captureController stopCapture];
_captureController = nil;
[_client disconnect];
}
@end