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/*
* Copyright 2018 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 "NADViewController.h"
#import "sdk/objc/base/RTCVideoRenderer.h"
#import "sdk/objc/components/capturer/RTCCameraVideoCapturer.h"
#import "sdk/objc/components/renderer/metal/RTCMTLVideoView.h"
#import "sdk/objc/helpers/RTCCameraPreviewView.h"
#include <memory>
#include "examples/objcnativeapi/objc/objc_call_client.h"
@interface NADViewController ()
@property(nonatomic) RTC_OBJC_TYPE(RTCCameraVideoCapturer) * capturer;
@property(nonatomic) RTC_OBJC_TYPE(RTCCameraPreviewView) * localVideoView;
@property(nonatomic)
__kindof UIView<RTC_OBJC_TYPE(RTCVideoRenderer)> *remoteVideoView;
@property(nonatomic) UIButton *callButton;
@property(nonatomic) UIButton *hangUpButton;
@end
@implementation NADViewController {
std::unique_ptr<webrtc_examples::ObjCCallClient> _call_client;
UIView *_view;
}
@synthesize capturer = _capturer;
@synthesize localVideoView = _localVideoView;
@synthesize remoteVideoView = _remoteVideoView;
@synthesize callButton = _callButton;
@synthesize hangUpButton = _hangUpButton;
#pragma mark - View controller lifecycle
- (void)loadView {
_view = [[UIView alloc] initWithFrame:CGRectZero];
_remoteVideoView =
[[RTC_OBJC_TYPE(RTCMTLVideoView) alloc] initWithFrame:CGRectZero];
_remoteVideoView.translatesAutoresizingMaskIntoConstraints = NO;
[_view addSubview:_remoteVideoView];
_localVideoView =
[[RTC_OBJC_TYPE(RTCCameraPreviewView) alloc] initWithFrame:CGRectZero];
_localVideoView.translatesAutoresizingMaskIntoConstraints = NO;
[_view addSubview:_localVideoView];
_callButton = [UIButton buttonWithType:UIButtonTypeSystem];
_callButton.translatesAutoresizingMaskIntoConstraints = NO;
[_callButton setTitle:@"Call" forState:UIControlStateNormal];
[_callButton addTarget:self
action:@selector(call:)
forControlEvents:UIControlEventTouchUpInside];
[_view addSubview:_callButton];
_hangUpButton = [UIButton buttonWithType:UIButtonTypeSystem];
_hangUpButton.translatesAutoresizingMaskIntoConstraints = NO;
[_hangUpButton setTitle:@"Hang up" forState:UIControlStateNormal];
[_hangUpButton addTarget:self
action:@selector(hangUp:)
forControlEvents:UIControlEventTouchUpInside];
[_view addSubview:_hangUpButton];
UILayoutGuide *margin = _view.layoutMarginsGuide;
[_remoteVideoView.leadingAnchor constraintEqualToAnchor:margin.leadingAnchor]
.active = YES;
[_remoteVideoView.topAnchor constraintEqualToAnchor:margin.topAnchor].active =
YES;
[_remoteVideoView.trailingAnchor
constraintEqualToAnchor:margin.trailingAnchor]
.active = YES;
[_remoteVideoView.bottomAnchor constraintEqualToAnchor:margin.bottomAnchor]
.active = YES;
[_localVideoView.leadingAnchor constraintEqualToAnchor:margin.leadingAnchor
constant:8.0]
.active = YES;
[_localVideoView.topAnchor constraintEqualToAnchor:margin.topAnchor
constant:8.0]
.active = YES;
[_localVideoView.widthAnchor constraintEqualToConstant:60].active = YES;
[_localVideoView.heightAnchor constraintEqualToConstant:60].active = YES;
[_callButton.leadingAnchor constraintEqualToAnchor:margin.leadingAnchor
constant:8.0]
.active = YES;
[_callButton.bottomAnchor constraintEqualToAnchor:margin.bottomAnchor
constant:8.0]
.active = YES;
[_callButton.widthAnchor constraintEqualToConstant:100].active = YES;
[_callButton.heightAnchor constraintEqualToConstant:40].active = YES;
[_hangUpButton.trailingAnchor constraintEqualToAnchor:margin.trailingAnchor
constant:8.0]
.active = YES;
[_hangUpButton.bottomAnchor constraintEqualToAnchor:margin.bottomAnchor
constant:8.0]
.active = YES;
[_hangUpButton.widthAnchor constraintEqualToConstant:100].active = YES;
[_hangUpButton.heightAnchor constraintEqualToConstant:40].active = YES;
self.view = _view;
}
- (void)viewDidLoad {
[super viewDidLoad];
self.capturer = [[RTC_OBJC_TYPE(RTCCameraVideoCapturer) alloc] init];
self.localVideoView.captureSession = self.capturer.captureSession;
_call_client.reset(new webrtc_examples::ObjCCallClient());
// Start capturer.
AVCaptureDevice *selectedDevice = nil;
NSArray<AVCaptureDevice *> *captureDevices =
[RTC_OBJC_TYPE(RTCCameraVideoCapturer) captureDevices];
for (AVCaptureDevice *device in captureDevices) {
if (device.position == AVCaptureDevicePositionFront) {
selectedDevice = device;
break;
}
}
AVCaptureDeviceFormat *selectedFormat = nil;
int targetWidth = 640;
int targetHeight = 480;
int currentDiff = INT_MAX;
NSArray<AVCaptureDeviceFormat *> *formats =
[RTC_OBJC_TYPE(RTCCameraVideoCapturer)
supportedFormatsForDevice:selectedDevice];
for (AVCaptureDeviceFormat *format in formats) {
CMVideoDimensions dimension =
CMVideoFormatDescriptionGetDimensions(format.formatDescription);
FourCharCode pixelFormat =
CMFormatDescriptionGetMediaSubType(format.formatDescription);
int diff = abs(targetWidth - dimension.width) +
abs(targetHeight - dimension.height);
if (diff < currentDiff) {
selectedFormat = format;
currentDiff = diff;
} else if (diff == currentDiff &&
pixelFormat == [_capturer preferredOutputPixelFormat]) {
selectedFormat = format;
}
}
[self.capturer startCaptureWithDevice:selectedDevice
format:selectedFormat
fps:30];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - Actions
- (IBAction)call:(id)sender {
_call_client->Call(self.capturer, self.remoteVideoView);
}
- (IBAction)hangUp:(id)sender {
_call_client->Hangup();
}
@end
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