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1/*
2 *  Copyright 2015 The WebRTC Project Authors. All rights reserved.
3 *
4 *  Use of this source code is governed by a BSD-style license
5 *  that can be found in the LICENSE file in the root of the source
6 *  tree. An additional intellectual property rights grant can be found
7 *  in the file PATENTS.  All contributing project authors may
8 *  be found in the AUTHORS file in the root of the source tree.
9 */
10
11#import "ARDVideoCallView.h"
12
13#import <AVFoundation/AVFoundation.h>
14
15#import <WebRTC/RTCEAGLVideoView.h>
16#if defined(RTC_SUPPORTS_METAL)
17#import <WebRTC/RTCMTLVideoView.h>
18#endif
19
20#import "UIImage+ARDUtilities.h"
21
22static CGFloat const kButtonPadding = 16;
23static CGFloat const kButtonSize = 48;
24static CGFloat const kLocalVideoViewSize = 120;
25static CGFloat const kLocalVideoViewPadding = 8;
26static CGFloat const kStatusBarHeight = 20;
27
28@interface ARDVideoCallView () <RTC_OBJC_TYPE (RTCVideoViewDelegate)>
29@end
30
31@implementation ARDVideoCallView {
32  UIButton *_routeChangeButton;
33  UIButton *_cameraSwitchButton;
34  UIButton *_hangupButton;
35  CGSize _remoteVideoSize;
36}
37
38@synthesize statusLabel = _statusLabel;
39@synthesize localVideoView = _localVideoView;
40@synthesize remoteVideoView = _remoteVideoView;
41@synthesize statsView = _statsView;
42@synthesize delegate = _delegate;
43
44- (instancetype)initWithFrame:(CGRect)frame {
45  if (self = [super initWithFrame:frame]) {
46
47#if defined(RTC_SUPPORTS_METAL)
48    _remoteVideoView = [[RTC_OBJC_TYPE(RTCMTLVideoView) alloc] initWithFrame:CGRectZero];
49#else
50    RTC_OBJC_TYPE(RTCEAGLVideoView) *remoteView =
51        [[RTC_OBJC_TYPE(RTCEAGLVideoView) alloc] initWithFrame:CGRectZero];
52    remoteView.delegate = self;
53    _remoteVideoView = remoteView;
54#endif
55
56    [self addSubview:_remoteVideoView];
57
58    _localVideoView = [[RTC_OBJC_TYPE(RTCCameraPreviewView) alloc] initWithFrame:CGRectZero];
59    [self addSubview:_localVideoView];
60
61    _statsView = [[ARDStatsView alloc] initWithFrame:CGRectZero];
62    _statsView.hidden = YES;
63    [self addSubview:_statsView];
64
65    _routeChangeButton = [UIButton buttonWithType:UIButtonTypeCustom];
66    _routeChangeButton.backgroundColor = [UIColor whiteColor];
67    _routeChangeButton.layer.cornerRadius = kButtonSize / 2;
68    _routeChangeButton.layer.masksToBounds = YES;
69    UIImage *image = [UIImage imageNamed:@"ic_surround_sound_black_24dp.png"];
70    [_routeChangeButton setImage:image forState:UIControlStateNormal];
71    [_routeChangeButton addTarget:self
72                           action:@selector(onRouteChange:)
73                 forControlEvents:UIControlEventTouchUpInside];
74    [self addSubview:_routeChangeButton];
75
76    // TODO(tkchin): don't display this if we can't actually do camera switch.
77    _cameraSwitchButton = [UIButton buttonWithType:UIButtonTypeCustom];
78    _cameraSwitchButton.backgroundColor = [UIColor whiteColor];
79    _cameraSwitchButton.layer.cornerRadius = kButtonSize / 2;
80    _cameraSwitchButton.layer.masksToBounds = YES;
81    image = [UIImage imageNamed:@"ic_switch_video_black_24dp.png"];
82    [_cameraSwitchButton setImage:image forState:UIControlStateNormal];
83    [_cameraSwitchButton addTarget:self
84                      action:@selector(onCameraSwitch:)
85            forControlEvents:UIControlEventTouchUpInside];
86    [self addSubview:_cameraSwitchButton];
87
88    _hangupButton = [UIButton buttonWithType:UIButtonTypeCustom];
89    _hangupButton.backgroundColor = [UIColor redColor];
90    _hangupButton.layer.cornerRadius = kButtonSize / 2;
91    _hangupButton.layer.masksToBounds = YES;
92    image = [UIImage imageForName:@"ic_call_end_black_24dp.png"
93                            color:[UIColor whiteColor]];
94    [_hangupButton setImage:image forState:UIControlStateNormal];
95    [_hangupButton addTarget:self
96                      action:@selector(onHangup:)
97            forControlEvents:UIControlEventTouchUpInside];
98    [self addSubview:_hangupButton];
99
100    _statusLabel = [[UILabel alloc] initWithFrame:CGRectZero];
101    _statusLabel.font = [UIFont fontWithName:@"Roboto" size:16];
102    _statusLabel.textColor = [UIColor whiteColor];
103    [self addSubview:_statusLabel];
104
105    UITapGestureRecognizer *tapRecognizer =
106        [[UITapGestureRecognizer alloc]
107            initWithTarget:self
108                    action:@selector(didTripleTap:)];
109    tapRecognizer.numberOfTapsRequired = 3;
110    [self addGestureRecognizer:tapRecognizer];
111  }
112  return self;
113}
114
115- (void)layoutSubviews {
116  CGRect bounds = self.bounds;
117  if (_remoteVideoSize.width > 0 && _remoteVideoSize.height > 0) {
118    // Aspect fill remote video into bounds.
119    CGRect remoteVideoFrame =
120        AVMakeRectWithAspectRatioInsideRect(_remoteVideoSize, bounds);
121    CGFloat scale = 1;
122    if (remoteVideoFrame.size.width > remoteVideoFrame.size.height) {
123      // Scale by height.
124      scale = bounds.size.height / remoteVideoFrame.size.height;
125    } else {
126      // Scale by width.
127      scale = bounds.size.width / remoteVideoFrame.size.width;
128    }
129    remoteVideoFrame.size.height *= scale;
130    remoteVideoFrame.size.width *= scale;
131    _remoteVideoView.frame = remoteVideoFrame;
132    _remoteVideoView.center =
133        CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
134  } else {
135    _remoteVideoView.frame = bounds;
136  }
137
138  // Aspect fit local video view into a square box.
139  CGRect localVideoFrame =
140      CGRectMake(0, 0, kLocalVideoViewSize, kLocalVideoViewSize);
141  // Place the view in the bottom right.
142  localVideoFrame.origin.x = CGRectGetMaxX(bounds)
143      - localVideoFrame.size.width - kLocalVideoViewPadding;
144  localVideoFrame.origin.y = CGRectGetMaxY(bounds)
145      - localVideoFrame.size.height - kLocalVideoViewPadding;
146  _localVideoView.frame = localVideoFrame;
147
148  // Place stats at the top.
149  CGSize statsSize = [_statsView sizeThatFits:bounds.size];
150  _statsView.frame = CGRectMake(CGRectGetMinX(bounds),
151                                CGRectGetMinY(bounds) + kStatusBarHeight,
152                                statsSize.width, statsSize.height);
153
154  // Place hangup button in the bottom left.
155  _hangupButton.frame =
156      CGRectMake(CGRectGetMinX(bounds) + kButtonPadding,
157                 CGRectGetMaxY(bounds) - kButtonPadding -
158                     kButtonSize,
159                 kButtonSize,
160                 kButtonSize);
161
162  // Place button to the right of hangup button.
163  CGRect cameraSwitchFrame = _hangupButton.frame;
164  cameraSwitchFrame.origin.x =
165      CGRectGetMaxX(cameraSwitchFrame) + kButtonPadding;
166  _cameraSwitchButton.frame = cameraSwitchFrame;
167
168  // Place route button to the right of camera button.
169  CGRect routeChangeFrame = _cameraSwitchButton.frame;
170  routeChangeFrame.origin.x =
171      CGRectGetMaxX(routeChangeFrame) + kButtonPadding;
172  _routeChangeButton.frame = routeChangeFrame;
173
174  [_statusLabel sizeToFit];
175  _statusLabel.center =
176      CGPointMake(CGRectGetMidX(bounds), CGRectGetMidY(bounds));
177}
178
179#pragma mark - RTC_OBJC_TYPE(RTCVideoViewDelegate)
180
181- (void)videoView:(id<RTC_OBJC_TYPE(RTCVideoRenderer)>)videoView didChangeVideoSize:(CGSize)size {
182  if (videoView == _remoteVideoView) {
183    _remoteVideoSize = size;
184  }
185  [self setNeedsLayout];
186}
187
188#pragma mark - Private
189
190- (void)onCameraSwitch:(id)sender {
191  [_delegate videoCallViewDidSwitchCamera:self];
192}
193
194- (void)onRouteChange:(id)sender {
195  [_delegate videoCallViewDidChangeRoute:self];
196}
197
198- (void)onHangup:(id)sender {
199  [_delegate videoCallViewDidHangup:self];
200}
201
202- (void)didTripleTap:(UITapGestureRecognizer *)recognizer {
203  [_delegate videoCallViewDidEnableStats:self];
204}
205
206@end
207